🩹 Longer3D LK has ONBOARD_SDIO (#27129)

Co-authored-by: sjasonsmith <20053467+sjasonsmith@users.noreply.github.com>

.devcontainer/Dockerfile

@@ -0,0 +1,29 @@
+# See here for image contents: https://github.com/microsoft/vscode-dev-containers/tree/v0.187.0/containers/python-3/.devcontainer/base.Dockerfile
+
+# [Choice] Python version: 3, 3.9, 3.8, 3.7, 3.6
+ARG VARIANT="3.9.0-buster"
+FROM python:${VARIANT}
+
+# [Option] Install Node.js
+ARG INSTALL_NODE="true"
+ARG NODE_VERSION="lts/*"
+RUN if [ "${INSTALL_NODE}" = "true" ]; then su vscode -c "umask 0002 && . /usr/local/share/nvm/nvm.sh && nvm install ${NODE_VERSION} 2>&1"; fi
+
+# [Optional] If your pip requirements rarely change, uncomment this section to add them to the image.
+# COPY requirements.txt /tmp/pip-tmp/
+# RUN pip3 --disable-pip-version-check --no-cache-dir install -r /tmp/pip-tmp/requirements.txt \
+#    && rm -rf /tmp/pip-tmp
+
+# [Optional] Uncomment this section to install additional OS packages.
+# RUN apt-get update && export DEBIAN_FRONTEND=noninteractive \
+#     && apt-get -y install --no-install-recommends <your-package-list-here>
+
+# [Optional] Uncomment this line to install global node packages.
+# RUN su vscode -c "source /usr/local/share/nvm/nvm.sh && npm install -g <your-package-here>" 2>&1
+
+
+RUN pip install -U https://github.com/platformio/platformio-core/archive/develop.zip
+RUN platformio update
+# To get the test platforms
+RUN pip install PyYaml
+#ENV PATH /code/buildroot/bin/:/code/buildroot/tests/:${PATH}

.devcontainer/devcontainer.json

@@ -0,0 +1,51 @@
+// For format details, see https://aka.ms/devcontainer.json. For config options, see the README at:
+// https://github.com/microsoft/vscode-dev-containers/tree/v0.187.0/containers/python-3
+{
+  "name": "Python 3",
+  "build": {
+    "dockerfile": "Dockerfile",
+    "context": "..",
+    "args": {
+      // Update 'VARIANT' to pick a Python version: 3, 3.6, 3.7, 3.8, 3.9
+      "VARIANT": "3.9.0-buster",
+      // Options
+      "INSTALL_NODE": "false",
+      "NODE_VERSION": "lts/*"
+    }
+  },
+
+  // Set *default* container specific settings.json values on container create.
+  "settings": {
+    "python.pythonPath": "/usr/local/bin/python",
+    "python.languageServer": "Pylance",
+    "python.linting.enabled": true,
+    "python.linting.pylintEnabled": true,
+    "python.formatting.autopep8Path": "/usr/local/py-utils/bin/autopep8",
+    "python.formatting.blackPath": "/usr/local/py-utils/bin/black",
+    "python.formatting.yapfPath": "/usr/local/py-utils/bin/yapf",
+    "python.linting.banditPath": "/usr/local/py-utils/bin/bandit",
+    "python.linting.flake8Path": "/usr/local/py-utils/bin/flake8",
+    "python.linting.mypyPath": "/usr/local/py-utils/bin/mypy",
+    "python.linting.pycodestylePath": "/usr/local/py-utils/bin/pycodestyle",
+    "python.linting.pydocstylePath": "/usr/local/py-utils/bin/pydocstyle",
+    "python.linting.pylintPath": "/usr/local/py-utils/bin/pylint"
+  },
+
+  // Add the IDs of extensions you want installed when the container is created.
+  "extensions": [
+    "ms-python.python",
+    "ms-python.vscode-pylance",
+    "platformio.platformio-ide",
+    "marlinfirmware.auto-build",
+    "editorconfig.editorconfig"
+  ],
+
+  // Use 'forwardPorts' to make a list of ports inside the container available locally.
+  // "forwardPorts": [],
+
+  // Use 'postCreateCommand' to run commands after the container is created.
+  // "postCreateCommand": "pip3 install --user -r requirements.txt",
+
+  // Comment out connect as root instead. More info: https://aka.ms/vscode-remote/containers/non-root.
+  // "remoteUser": "vscode"
+}

.editorconfig

@@ -1,19 +1,33 @@
 # editorconfig.org
 root = true
 
+[*]
+trim_trailing_whitespace = true
+insert_final_newline = true
+
 [{*.patch,syntax_test_*}]
 trim_trailing_whitespace = false
 
+[{*.c,*.cpp,*.h,*.ino,*.py,Makefile}]
+end_of_line = lf
+
 [{*.c,*.cpp,*.h,*.ino}]
 charset = utf-8
-
-[{*.c,*.cpp,*.h,*.ino,Makefile}]
-trim_trailing_whitespace = true
-insert_final_newline = true
-end_of_line = lf
 indent_style = space
 indent_size = 2
 
-[{*.py,*.conf,*.sublime-project}]
+[{Makefile}]
+indent_style = tab
+indent_size = 2
+
+[*.md]
+# Two spaces at the end of the line means newline in Markdown
+trim_trailing_whitespace = false
+
+[{*.py}]
+indent_style = space
+indent_size = 4
+
+[{*.conf,*.sublime-project}]
 indent_style = tab
 indent_size = 4

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -1,169 +0,0 @@
-name: 🪲 Report a bug
-description: Create a bug report to help improve Marlin Firmware
-title: "[BUG] (bug summary)"
-body:
-  - type: markdown
-    attributes:
-      value: >
-        Do you want to ask a question? Are you looking for support? Please use one of the [support links](https://github.com/MarlinFirmware/Marlin/issues/new/choose).
-
-  - type: markdown
-    attributes:
-      value: |
-        **Thank you for reporting a bug in Marlin Firmware!**
-
-        ## Before Reporting a Bug
-
-        - Read and understand Marlin's [Code of Conduct](https://github.com/MarlinFirmware/Marlin/blob/master/.github/code_of_conduct.md). You are expected to comply with it, including treating everyone with respect.
-
-        - Test with the [`bugfix-2.0.x` branch](https://github.com/MarlinFirmware/Marlin/archive/bugfix-2.0.x.zip) to see whether the issue still exists.
-
-        ## Instructions
-
-        Please follow the instructions below. Failure to do so may result in your issue being closed. See [Contributing to Marlin](https://github.com/MarlinFirmware/Marlin/blob/2.0.x/.github/contributing.md) for additional guidelines.
-
-        1. Provide a good title starting with [BUG].
-        2. Fill out all sections of this bug report form.
-        3. Always attach configuration files so we can build and test your setup.
-
-  - type: dropdown
-    attributes:
-      label: Did you test the latest `bugfix-2.0.x` code?
-      description: >-
-        Always try the latest code to make sure the issue you are reporting is not already fixed. To download
-        the latest code just [click this link](https://github.com/MarlinFirmware/Marlin/archive/bugfix-2.0.x.zip).
-      options:
-        - Yes, and the problem still exists.
-        - No, but I will test it now!
-    validations:
-      required: true
-
-  - type: markdown
-    attributes:
-      value: |
-        # Bug Details
-
-  - type: textarea
-    attributes:
-      label: Bug Description
-      description: >-
-        Describe the bug in this section. Tell us what you were trying to do and what
-        happened that you did not expect. Provide a clear and concise description of the
-        problem and include as many details as possible.
-      placeholder: |
-        Marlin doesn't work.
-    validations:
-      required: true
-
-  - type: input
-    attributes:
-      label: Bug Timeline
-      description: Is this a new bug or an old issue? When did it first start?
-
-  - type: textarea
-    attributes:
-      label: Expected behavior
-      description: >-
-        What did you expect to happen?
-      placeholder: I expected it to move left.
-
-  - type: textarea
-    attributes:
-      label: Actual behavior
-      description: What actually happened instead?
-      placeholder: It moved right instead of left.
-
-  - type: textarea
-    attributes:
-      label: Steps to Reproduce
-      description: >-
-        Please describe the steps needed to reproduce the issue.
-      placeholder: |
-        1. [First Step] ...
-        2. [Second Step] ...
-        3. [and so on] ...
-
-  - type: markdown
-    attributes:
-      value: |
-        # Your Setup
-
-  - type: input
-    attributes:
-      label: Version of Marlin Firmware
-      description: "See the About Menu on the LCD or the output of `M115`. NOTE: For older releases we only patch critical bugs."
-    validations:
-      required: true
-
-  - type: input
-    attributes:
-      label: Printer model
-      description: Creality Ender 3, Prusa mini, or Kossel Delta?
-
-  - type: input
-    attributes:
-      label: Electronics
-      description: Stock electronics, upgrade board, or something else?
-
-  - type: input
-    attributes:
-      label: Add-ons
-      description: Please list any hardware add-ons that could be involved.
-
-  - type: dropdown
-    attributes:
-      label: Bed Leveling
-      description: What kind of bed leveling compensation are you using?
-      options:
-        - UBL Bilinear mesh
-        - ABL Bilinear mesh
-        - ABL Linear grid
-        - ABL 3-point
-        - MBL Manual Bed Leveling
-        - No Bed Leveling
-
-  - type: dropdown
-    attributes:
-      label: Your Slicer
-      description: Do you use Slic3r, Prusa Slicer, Simplify3D, IdeaMaker...?
-      options:
-        - Slic3r
-        - Simplify3D
-        - Prusa Slicer
-        - IdeaMaker
-        - Cura
-        - Other (explain below)
-
-  - type: dropdown
-    attributes:
-      label: Host Software
-      description: Do you use OctoPrint, Repetier Host, Pronterface...?
-      options:
-        - SD Card (headless)
-        - Repetier Host
-        - OctoPrint
-        - Pronterface
-        - Cura
-        - Same as my slicer
-        - Other (explain below)
-
-  - type: markdown
-    attributes:
-      value: >-
-        ## Other things to include
-
-        Please also be sure to include these items to help with troubleshooting:
-
-          * **A ZIP file** containing your `Configuration.h` and `Configuration_adv.h`.
-            (Please don't paste lengthy configuration text here.)
-          * **Log output** from the host. (`M111 S247` for maximum logging.)
-          * **Images or videos** demonstrating the problem, if it helps to make it clear.
-          * **A G-Code file** that exposes the problem, if not affecting _all_ G-code.
-
-        If you've made any other modifications to the firmware, please describe them in detail in the space provided.
-
-        When pasting formatted text into the box below don't forget to put ` ``` ` (on its own line) before and after to make it readable.
-
-  - type: textarea
-    attributes:
-      label: Additional information & file uploads

.github/ISSUE_TEMPLATE/config.yml

@@ -1,20 +0,0 @@
-blank_issues_enabled: false
-contact_links:
-  - name: 📖 Marlin Documentation
-    url: http://marlinfw.org/
-    about: Lots of documentation on installing and using Marlin.
-  - name: 👤 MarlinFirmware Facebook group
-    url: https://www.facebook.com/groups/1049718498464482
-    about: Please ask and answer questions here.
-  - name: 🕹 Marlin on Discord
-    url: https://discord.gg/n5NJ59y
-    about: Join the Discord server for support and discussion.
-  - name: 🔗 Marlin Discussion Forum
-    url: http://forums.reprap.org/list.php?415
-    about: A searchable web forum hosted by RepRap dot org.
-  - name: 📺 Marlin Videos on YouTube
-    url: https://www.youtube.com/results?search_query=marlin+firmware
-    about: Tutorials and more from Marlin users all around the world. Great for new users!
-  - name: 💸 Want to donate?
-    url: https://www.thinkyhead.com/donate-to-marlin
-    about: Please take a look at the various options to support Marlin Firmware's development financially!

.github/ISSUE_TEMPLATE/feature_request.yml

@@ -1,44 +0,0 @@
-name: ✨ Request a feature
-description: Request a new Marlin Firmware feature
-title: "[FR] (feature summary)"
-labels: 'T: Feature Request'
-body:
-  - type: markdown
-    attributes:
-      value: >
-        Do you want to ask a question? Are you looking for support? Please use one of the [support links](https://github.com/MarlinFirmware/Marlin/issues/new/choose).
-
-  - type: markdown
-    attributes:
-      value: >
-        **Thank you for requesting a new Marlin Firmware feature!**
-
-        ## Before Requesting a Feature
-
-        - Read and understand Marlin's [Code of Conduct](https://github.com/MarlinFirmware/Marlin/blob/master/.github/code_of_conduct.md). You are expected to comply with it, including treating everyone with respect.
-
-        - Check the latest [`bugfix-2.0.x` branch](https://github.com/MarlinFirmware/Marlin/archive/bugfix-2.0.x.zip) to see if the feature already exists.
-
-        - Before you proceed with your request, please consider if it is necessary to make it into a firmware feature, or if it may be better suited for a slicer or host feature.
-
-  - type: textarea
-    attributes:
-      label: Is your feature request related to a problem? Please describe.
-      description: A clear description of the problem (e.g., "I need X but Marlin can't do it [...]").
-
-  - type: textarea
-    attributes:
-      label: Are you looking for hardware support?
-      description: Tell us the printer, board, or peripheral that needs support.
-
-  - type: textarea
-    attributes:
-      label: Describe the feature you want
-      description: A clear description of the feature and how you think it should work.
-    validations:
-      required: true
-
-  - type: textarea
-    attributes:
-      label: Additional context
-      description: Add any other context or screenshots about the feature request here.

.github/code_of_conduct.md

@@ -28,15 +28,9 @@ Project maintainers are responsible for clarifying the standards of acceptable b
 
 Project maintainers have the right and responsibility to remove, edit, or reject comments, commits, code, issues, and other contributions that are not aligned to this Code of Conduct, or to ban temporarily or permanently any contributor for other behaviors that they deem inappropriate, threatening, offensive, or harmful.
 
-## Scope
-
-This Code of Conduct applies both within project spaces and in public spaces when an individual is representing the project or its community. Examples of representing a project or community include using an official project e-mail address, posting via an official social media account, or acting as an appointed representative at an online or offline event. Representation of a project may be further defined and clarified by project maintainers.
-
 ## Enforcement
 
-Instances of abusive, harassing, or otherwise unacceptable behavior may be reported by contacting the project team at [marlinfirmware@github.com](mailto:marlinfirmware@github.com). All complaints will be reviewed and investigated and will result in a response that is deemed necessary and appropriate to the circumstances. The project team is obligated to maintain confidentiality with regard to the reporter of an incident. Further details of specific enforcement policies may be posted separately.
-
-Project maintainers who do not follow or enforce the Code of Conduct in good faith may face temporary or permanent repercussions as determined by other members of the project's leadership.
+Instances of abusive, harassing, or otherwise unacceptable behavior may be reported by following GitHub's [reporting abuse or spam article](https://docs.github.com/en/communities/maintaining-your-safety-on-github/reporting-abuse-or-spam). All complaints will be reviewed and investigated and will result in a response that is deemed necessary and appropriate to the circumstances.
 
 ## Attribution
 

.github/contributing.md

@@ -26,16 +26,20 @@ The following is a set of guidelines for contributing to Marlin, hosted by the [
 
 ## Code of Conduct
 
-This project and everyone participating in it is governed by the [Marlin Code of Conduct](code_of_conduct.md). By participating, you are expected to uphold this code. Please report unacceptable behavior to [marlinfirmware@github.com](mailto:marlinfirmware@github.com).
+This project and everyone participating in it is governed by the [Marlin Code of Conduct](code_of_conduct.md). By participating, you are expected to uphold this code. Please report unacceptable behavior by following GitHub's [reporting abuse or spam article](https://docs.github.com/en/communities/maintaining-your-safety-on-github/reporting-abuse-or-spam).
 
 ## I don't want to read this whole thing I just have a question!!!
 
-> **Note:** Please don't file an issue to ask a question. You'll get faster results by using the resources below.
+> [!NOTE]
+> Please don't file an issue to ask a question. You'll get faster results by using the resources below.
 
 We have a Message Board and a Facebook group where our knowledgable user community can provide helpful advice if you have questions.
 
-* [Marlin RepRap forum](https://reprap.org/forum/list.php?415)
-* [MarlinFirmware on Facebook](https://www.facebook.com/groups/1049718498464482/)
+- [Marlin Documentation](https://marlinfw.org) - Official Marlin documentation
+- Facebook Group ["Marlin Firmware"](https://www.facebook.com/groups/1049718498464482/)
+- RepRap.org [Marlin Forum](https://forums.reprap.org/list.php?415)
+- Facebook Group ["Marlin Firmware for 3D Printers"](https://www.facebook.com/groups/3Dtechtalk/)
+- [Marlin Configuration](https://www.youtube.com/results?search_query=marlin+configuration) on YouTube
 
 If chat is more your speed, you can join the MarlinFirmware Discord server:
 
@@ -50,13 +54,14 @@ If chat is more your speed, you can join the MarlinFirmware Discord server:
 
 This section guides you through submitting a Bug Report for Marlin. Following these guidelines helps maintainers and the community understand your report, reproduce the behavior, and find related reports.
 
-Before creating a Bug Report, please test the "nightly" development branch, as you might find out that you don't need to create one. When you are creating a Bug Report, please [include as many details as possible](#how-do-i-submit-a-good-bug-report). Fill out [the required template](issue_template.md), the information it asks for helps us resolve issues faster.
+Before creating a Bug Report, please test the "nightly" development branch, as you might find out that you don't need to create one. When you are creating a Bug Report, please [include as many details as possible](#how-do-i-submit-a-good-bug-report). Fill out [the required template](ISSUE_TEMPLATE/bug_report.yml), the information it asks for helps us resolve issues faster.
 
-> **Note:** Regressions can happen. If you find a **Closed** issue that seems like your issue, go ahead and open a new issue and include a link to the original issue in the body of your new one. All you need to create a link is the issue number, preceded by #. For example, #8888.
+> [!NOTE]
+> Regressions can happen. If you find a **Closed** issue that seems like your issue, go ahead and open a new issue and include a link to the original issue in the body of your new one. All you need to create a link is the issue number, preceded by #. For example, #8888.
 
 #### How Do I Submit A (Good) Bug Report?
 
-Bugs are tracked as [GitHub issues](https://guides.github.com/features/issues/). Use the New Issue button to create an issue and provide the following information by filling in [the template](issue_template.md).
+Bugs are tracked as [GitHub issues](https://guides.github.com/features/issues/). Use the New Issue button to create an issue and provide the following information by filling in [the template](ISSUE_TEMPLATE/bug_report.yml).
 
 Explain the problem and include additional details to help maintainers reproduce the problem:
 
@@ -88,12 +93,12 @@ Include details about your configuration and environment:
 
 This section guides you through submitting a suggestion for Marlin, including completely new features and minor improvements to existing functionality. Following these guidelines helps maintainers and the community understand your suggestion and find related suggestions.
 
-Before creating a suggestion, please check [this list](#before-submitting-a-suggestion) as you might find out that you don't need to create one. When you are creating an enhancement suggestion, please [include as many details as possible](#how-do-i-submit-a-good-enhancement-suggestion). Fill in [the template](issue_template.md), including the steps that you imagine you would take if the feature you're requesting existed.
+Before creating a suggestion, please check [this list](https://github.com/MarlinFirmware/Marlin/issues?q=is%3Aopen+is%3Aissue+label%3A%22T%3A+Feature+Request%22) as you might find out that you don't need to create one. When you are creating an enhancement suggestion, please [include as many details as possible](#how-do-i-submit-a-good-feature-request). Fill in [the template](ISSUE_TEMPLATE/feature_request.yml), including the steps that you imagine you would take if the feature you're requesting existed.
 
 #### Before Submitting a Feature Request
 
 * **Check the [Marlin website](https://marlinfw.org/)** for tips — you might discover that the feature is already included. Most importantly, check if you're using [the latest version of Marlin](https://github.com/MarlinFirmware/Marlin/releases) and if you can get the desired behavior by changing [Marlin's config settings](https://marlinfw.org/docs/configuration/configuration.html).
-* **Perform a [cursory search](https://github.com/MarlinFirmware/Marlin/issues?q=is%3Aissue)** to see if the enhancement has already been suggested. If it has, add a comment to the existing issue instead of opening a new one.
+* **Perform a [cursory search](https://github.com/MarlinFirmware/Marlin/issues?q=is%3Aopen+is%3Aissue+label%3A%22T%3A+Feature+Request%22)** to see if the enhancement has already been suggested. If it has, add a comment to the existing issue instead of opening a new one.
 
 #### How Do I Submit A (Good) Feature Request?
 
@@ -116,7 +121,7 @@ Unsure where to begin contributing to Marlin? You can start by looking through t
 
 ### Pull Requests
 
-Pull Requests should always be targeted to working branches (e.g., `bugfix-1.1.x` and/or `bugfix-2.0.x`) and never to release branches (e.g., `1.1.x`). If this is your first Pull Request, please read our [Guide to Pull Requests](https://marlinfw.org/docs/development/getting_started_pull_requests.html) and Github's [Pull Request](https://help.github.com/articles/creating-a-pull-request/) documentation.
+Pull Requests should always be targeted to working branches (e.g., `bugfix-2.1.x` and/or `bugfix-1.1.x`) and never to release branches (e.g., `2.0.x` and/or `1.1.x`). If this is your first Pull Request, please read our [Guide to Pull Requests](https://marlinfw.org/docs/development/getting_started_pull_requests.html) and Github's [Pull Request](https://help.github.com/articles/creating-a-pull-request/) documentation.
 
 * Fill in [the required template](pull_request_template.md).
 * Don't include issue numbers in the PR title.

.github/issue_template.md

@@ -1,35 +0,0 @@
-<!--
-
-Have you read Marlin's Code of Conduct? By filing an Issue, you are expected to comply with it, including treating everyone with respect: https://github.com/MarlinFirmware/Marlin/blob/bugfix-2.0.x/.github/code_of_conduct.md
-
-Do you want to ask a question? Are you looking for support? Please don't post here. Instead use one of the following options:
-
-- The Marlin Firmware forum at https://reprap.org/forum/list.php?415
-- The MarlinFirmware Facebook Group at https://www.facebook.com/groups/1049718498464482/
-- The MarlinFirmware Discord Server at https://discord.gg/n5NJ59y.
-
-Before filing an issue be sure to test the latest "bugfix" branch to see whether the issue is already addressed.
-
--->
-
-### Description
-
-<!-- Description of the bug or requested feature -->
-
-### Steps to Reproduce
-
-<!-- If this is a Bug Report, please describe the steps needed to reproduce the issue -->
-
-1. [First Step]
-2. [Second Step]
-3. [and so on...]
-
-**Expected behavior:** [What you expect to happen]
-
-**Actual behavior:** [What actually happens]
-
-#### Additional Information
-
-* Include a ZIP file containing your `Configuration.h` and `Configuration_adv.h` files.
-* Provide pictures or links to videos that clearly demonstrate the issue.
-* See [How Can I Contribute](#how-can-i-contribute) for additional guidelines.

.github/lock.yml

@@ -1,40 +0,0 @@
-#
-# Configuration for Lock Threads - https://github.com/dessant/lock-threads-app
-#
-
-# Number of days of inactivity before a closed issue or pull request is locked
-daysUntilLock: 60
-
-# Skip issues and pull requests created before a given timestamp. Timestamp must
-# follow ISO 8601 (`YYYY-MM-DD`). Set to `false` to disable
-skipCreatedBefore: false
-
-# Issues and pull requests with these labels will be ignored. Set to `[]` to disable
-exemptLabels: [ 'no-locking' ]
-
-# Label to add before locking, such as `outdated`. Set to `false` to disable
-lockLabel: false
-
-# Comment to post before locking. Set to `false` to disable
-lockComment: >
-  This thread has been automatically locked since there has not been
-  any recent activity after it was closed. Please open a new issue for
-  related bugs.
-
-# Assign `resolved` as the reason for locking. Set to `false` to disable
-setLockReason: true
-
-# Limit to only `issues` or `pulls`
-# only: issues
-
-# Optionally, specify configuration settings just for `issues` or `pulls`
-# issues:
-#   exemptLabels:
-#     - help-wanted
-#   lockLabel: outdated
-
-# pulls:
-#   daysUntilLock: 30
-
-# Repository to extend settings from
-# _extends: repo

.github/workflows/bump-date.yml

@@ -1,36 +0,0 @@
-#
-# bump-date.yml
-# Bump the distribution date once per day
-#
-
-name: Bump Distribution Date
-
-on:
-  schedule:
-    - cron: '0 0 * * *'
-
-jobs:
-  bump_date:
-    name: Bump Distribution Date
-    if: github.repository == 'MarlinFirmware/Marlin'
-
-    runs-on: ubuntu-latest
-
-    steps:
-
-    - name: Check out bugfix-2.0.x
-      uses: actions/checkout@v2
-      with:
-        ref: bugfix-2.0.x
-
-    - name: Bump Distribution Date
-      run: |
-        # Inline Bump Script
-        DIST=$( date +"%Y-%m-%d" )
-        eval "sed -E -i 's/(#define +STRING_DISTRIBUTION_DATE) .*$/\1 \"$DIST\"/g' Marlin/src/inc/Version.h" && \
-        eval "sed -E -i 's/(#define +STRING_DISTRIBUTION_DATE) .*$/\1 \"$DIST\"/g' Marlin/Version.h" && \
-        git config user.name "${GITHUB_ACTOR}" && \
-        git config user.email "${GITHUB_ACTOR}@users.noreply.github.com" && \
-        git add . && \
-        git commit -m "[cron] Bump distribution date ($DIST)" && \
-        git push

.github/workflows/check-pr.yml

@@ -1,33 +0,0 @@
-#
-# check-pr.yml
-# Close PRs directed at release branches
-#
-
-name: PR Bad Target
-
-on:
-  pull_request_target:
-    types: [opened]
-    branches:
-    - 1.0.x
-    - 1.1.x
-    - 2.0.x
-
-jobs:
-  bad_target:
-    name: PR Bad Target
-    if: github.repository == 'MarlinFirmware/Marlin'
-
-    runs-on: ubuntu-latest
-
-    steps:
-    - uses: superbrothers/close-pull-request@v3
-      with:
-        comment: >
-          Thanks for your contribution! Unfortunately we can't accept PRs directed at release branches. We make patches to the bugfix branches and only later do we push them out as releases.
-
-          Please redo this PR starting with the `bugfix-2.0.x` branch and be careful to target `bugfix-2.0.x` when resubmitting the PR.
-
-          It may help to set your fork's default branch to `bugfix-2.0.x`.
-
-          See [this page](http://marlinfw.org/docs/development/getting_started_pull_requests.html) for full instructions.

.github/workflows/clean-closed.yml

@@ -1,39 +0,0 @@
-#
-# clean-closed.yml
-# Remove obsolete labels when an Issue or PR is closed
-#
-
-name: Clean Closed
-
-on:
-  pull_request:
-    types: [closed]
-  issues:
-    types: [closed]
-
-jobs:
-  remove_label:
-    runs-on: ubuntu-latest
-
-    strategy:
-      matrix:
-        label:
-          - "S: Don't Merge"
-          - "S: Hold for 2.1"
-          - "S: Please Merge"
-          - "S: Please Test"
-          - "help wanted"
-          - "Needs: Discussion"
-          - "Needs: Documentation"
-          - "Needs: More Data"
-          - "Needs: Patch"
-          - "Needs: Testing"
-          - "Needs: Work"
-
-    steps:
-      - uses: actions/checkout@v2
-      - name: Remove Labels
-        uses: actions-ecosystem/action-remove-labels@v1
-        with:
-          github_token: ${{ github.token }}
-          labels: ${{ matrix.label }}

.github/workflows/close-stale.yml

@@ -1,28 +0,0 @@
-#
-# close-stale.yml
-# Close open issues after a period of inactivity
-#
-
-name: Close Stale Issues
-
-on:
-  schedule:
-  - cron: "22 1 * * *"
-
-jobs:
-  stale:
-    name: Close Stale Issues
-    if: github.repository == 'MarlinFirmware/Marlin'
-
-    runs-on: ubuntu-latest
-
-    steps:
-    - uses: actions/stale@v3
-      with:
-        repo-token: ${{ secrets.GITHUB_TOKEN }}
-        stale-issue-message: 'This issue has had no activity in the last 60 days. Please add a reply if you want to keep this issue active, otherwise it will be automatically closed within 10 days.'
-        days-before-stale: 60
-        days-before-close: 10
-        stale-issue-label: 'stale-closing-soon'
-        exempt-all-assignees: true
-        exempt-issue-labels: 'Bug: Confirmed !,T: Feature Request,Needs: Discussion,Needs: Documentation,Needs: More Data,Needs: Patch,Needs: Work,Needs: Testing,help wanted,no-locking'

.github/workflows/lock-closed.yml

@@ -1,32 +0,0 @@
-#
-# lock-closed.yml
-# Lock closed issues after a period of inactivity
-#
-
-name: Lock Closed Issues
-
-on:
-  schedule:
-    - cron: '0 1/13 * * *'
-
-jobs:
-  lock:
-    name: Lock Closed Issues
-    if: github.repository == 'MarlinFirmware/Marlin'
-
-    runs-on: ubuntu-latest
-
-    steps:
-    - uses: dessant/lock-threads@v2
-      with:
-        github-token: ${{ github.token }}
-        process-only: 'issues'
-        issue-lock-inactive-days: '60'
-        issue-exclude-created-before: '2017-07-01T00:00:00Z'
-        issue-exclude-labels: 'no-locking'
-        issue-lock-labels: ''
-        issue-lock-comment: >
-          This issue has been automatically locked since there
-          has not been any recent activity after it was closed.
-          Please open a new issue for related bugs.
-        issue-lock-reason: ''

.github/workflows/test-builds.yml

@@ -1,145 +0,0 @@
-#
-# test-builds.yml
-# Do test builds to catch compile errors
-#
-
-name: CI
-
-on:
-  pull_request:
-    branches:
-    - bugfix-2.0.x
-    paths-ignore:
-    - config/**
-    - data/**
-    - docs/**
-    - '**/*.md'
-  push:
-    branches:
-    - bugfix-2.0.x
-    paths-ignore:
-    - config/**
-    - data/**
-    - docs/**
-    - '**/*.md'
-
-jobs:
-  test_builds:
-    name: Run All Tests
-    if: github.repository == 'MarlinFirmware/Marlin'
-
-    runs-on: ubuntu-latest
-
-    strategy:
-      matrix:
-        test-platform:
-        # Base Environments
-
-        - DUE
-        - DUE_archim
-        - esp32
-        - linux_native
-        - mega2560
-        - at90usb1286_dfu
-        - teensy31
-        - teensy35
-        - teensy41
-        - SAMD51_grandcentral_m4
-
-        # Extended AVR Environments
-
-        - FYSETC_F6
-        - mega1280
-        - rambo
-        - sanguino1284p
-        - sanguino644p
-
-        # STM32F1 (Maple) Environments
-
-        #- STM32F103RC_btt_maple
-        - STM32F103RC_btt_USB_maple
-        - STM32F103RC_fysetc_maple
-        - STM32F103RC_meeb
-        - jgaurora_a5s_a1_maple
-        - STM32F103VE_longer_maple
-        #- mks_robin_maple
-        - mks_robin_lite_maple
-        - mks_robin_pro_maple
-        #- mks_robin_nano35_maple
-        #- STM32F103RET6_creality_maple
-        - STM32F103VE_ZM3E4V2_USB_maple
-
-        # STM32 (ST) Environments
-
-        - STM32F103RC_btt
-        #- STM32F103RC_btt_USB
-        - STM32F103RE_btt
-        - STM32F103RE_btt_USB
-        - STM32F103RET6_creality
-        - STM32F103VE_longer
-        - STM32F407VE_black
-        - STM32F401VE_STEVAL
-        - BIGTREE_BTT002
-        - BIGTREE_SKR_PRO
-        - BIGTREE_GTR_V1_0
-        - mks_robin
-        - ARMED
-        - FYSETC_S6
-        - STM32F070CB_malyan
-        - STM32F070RB_malyan
-        - malyan_M300
-        - FLYF407ZG
-        - rumba32
-        - LERDGEX
-        - LERDGEK
-        - mks_robin_nano35
-        - NUCLEO_F767ZI
-        - REMRAM_V1
-        - BTT_SKR_SE_BX
-        - chitu_f103
-        - Index_Mobo_Rev03
-
-        # Put lengthy tests last
-
-        - LPC1768
-        - LPC1769
-
-        # Non-working environment tests
-        #- at90usb1286_cdc
-        #- STM32F103CB_malyan
-        #- STM32F103RE
-        #- mks_robin_mini
-
-    steps:
-
-    - name: Check out the PR
-      uses: actions/checkout@v2
-
-    - name: Cache pip
-      uses: actions/cache@v2
-      with:
-        path: ~/.cache/pip
-        key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements.txt') }}
-        restore-keys: |
-          ${{ runner.os }}-pip-
-
-    - name: Cache PlatformIO
-      uses: actions/cache@v2
-      with:
-        path: ~/.platformio
-        key: ${{ runner.os }}-${{ hashFiles('**/lockfiles') }}
-
-    - name: Select Python 3.7
-      uses: actions/setup-python@v2
-      with:
-        python-version: '3.7' # Version range or exact version of a Python version to use, using semvers version range syntax.
-        architecture: 'x64' # optional x64 or x86. Defaults to x64 if not specified
-
-    - name: Install PlatformIO
-      run: |
-        pip install -U https://github.com/platformio/platformio-core/archive/develop.zip
-        platformio update
-
-    - name: Run ${{ matrix.test-platform }} Tests
-      run: |
-        make tests-single-ci TEST_TARGET=${{ matrix.test-platform }}

.github/workflows/unlock-reopened.yml

@@ -1,22 +0,0 @@
-#
-# unlock-reopened.yml
-# Unlock an issue whenever it is re-opened
-#
-
-name: "Unlock reopened issue"
-
-on:
-  issues:
-    types: [reopened]
-
-jobs:
-  unlock:
-    name: Unlock Reopened
-    if: github.repository == 'MarlinFirmware/Marlin'
-
-    runs-on: ubuntu-latest
-
-    steps:
-    - uses: OSDKDev/unlock-issues@v1.1
-      with:
-        repo-token: "${{ secrets.GITHUB_TOKEN }}"

.gitignore

@@ -21,36 +21,21 @@
 
 # Generated files
 _Version.h
-bdf2u8g
+bdf2u8g.exe
+genpages.exe
 marlin_config.json
 mczip.h
+language*.csv
+out-csv/
+out-language/
 *.gen
 *.sublime-workspace
 
-#
 # OS
-#
 applet/
 .DS_Store
 
-#
-# Misc
-#
-*~
-*.orig
-*.rej
-*.bak
-*.idea
-*.s
-*.i
-*.ii
-*.swp
-tags
-
-#
-# C++
-#
-# Compiled Object files
+# Compiled C++ Object files
 *.slo
 *.lo
 *.o
@@ -81,10 +66,7 @@ tags
 *.out
 *.app
 
-#
-# C
-#
-# Object files
+# Compiled C Object files
 *.o
 *.ko
 *.obj
@@ -141,19 +123,19 @@ __vm/
 vc-fileutils.settings
 
 # Visual Studio Code
-.vscode
-.vscode/.browse.c_cpp.db*
-.vscode/c_cpp_properties.json
-.vscode/launch.json
-.vscode/*.db
+.vscode/*
+!.vscode/extensions.json
 
-#Simulation
+# Simulation files
 imgui.ini
 eeprom.dat
 spi_flash.bin
+fs.img
 
-#cmake
+# CMake
+buildroot/share/cmake/*
 CMakeLists.txt
+!buildroot/share/cmake/CMakeLists.txt
 src/CMakeLists.txt
 CMakeListsPrivate.txt
 build/
@@ -173,3 +155,16 @@ __pycache__
 
 # IOLogger logs
 *_log.csv
+
+# Misc.
+*~
+*.orig
+*.rej
+*.bak
+*.idea
+*.i
+*.ii
+*.swp
+tags
+*.logs
+*.bak

.vscode/extensions.json

@@ -0,0 +1,12 @@
+{
+    // See http://go.microsoft.com/fwlink/?LinkId=827846
+    // for the documentation about the extensions.json format
+    "recommendations": [
+        "marlinfirmware.auto-build",
+        "platformio.platformio-ide"
+    ],
+    "unwantedRecommendations": [
+        "ms-vscode-remote.remote-containers",
+        "ms-vscode.cpptools-extension-pack"
+    ]
+}

Makefile

@@ -1,11 +1,18 @@
+SCRIPTS_DIR := buildroot/share/scripts
+CONTAINER_RT_BIN := docker
+CONTAINER_RT_OPTS := --rm -v $(PWD):/code -v platformio-cache:/root/.platformio
+CONTAINER_IMAGE := marlin-dev
+
 help:
 	@echo "Tasks for local development:"
-	@echo "* tests-single-ci:             Run a single test from inside the CI"
-	@echo "* tests-single-local:          Run a single test locally"
-	@echo "* tests-single-local-docker:   Run a single test locally, using docker-compose"
-	@echo "* tests-all-local:             Run all tests locally"
-	@echo "* tests-all-local-docker:      Run all tests locally, using docker-compose"
-	@echo "* setup-local-docker:          Setup local docker-compose"
+	@echo "make marlin                    : Build marlin for the configured board"
+	@echo "make format-pins               : Reformat all pins files"
+	@echo "make tests-single-ci           : Run a single test from inside the CI"
+	@echo "make tests-single-local        : Run a single test locally"
+	@echo "make tests-single-local-docker : Run a single test locally, using docker"
+	@echo "make tests-all-local           : Run all tests locally"
+	@echo "make tests-all-local-docker    : Run all tests locally, using docker"
+	@echo "make setup-local-docker        : Build the local docker image"
 	@echo ""
 	@echo "Options for testing:"
 	@echo "  TEST_TARGET          Set when running tests-single-*, to select the"
@@ -18,35 +25,41 @@ help:
 	@echo "  VERBOSE_PLATFORMIO   If you want the full PIO output, set any value"
 	@echo "  GIT_RESET_HARD       Used by CI: reset all local changes. WARNING:"
 	@echo "                       THIS WILL UNDO ANY CHANGES YOU'VE MADE!"
-.PHONY: help
+
+marlin:
+	./buildroot/bin/mftest -a
+.PHONY: marlin
 
 tests-single-ci:
 	export GIT_RESET_HARD=true
-	$(MAKE) tests-single-local TEST_TARGET=$(TEST_TARGET)
-.PHONY: tests-single-ci
+	$(MAKE) tests-single-local TEST_TARGET=$(TEST_TARGET) PLATFORMIO_BUILD_FLAGS=-DGITHUB_ACTION
 
 tests-single-local:
 	@if ! test -n "$(TEST_TARGET)" ; then echo "***ERROR*** Set TEST_TARGET=<your-module> or use make tests-all-local" ; return 1; fi
-	export PATH=./buildroot/bin/:./buildroot/tests/:${PATH} \
+	export PATH="./buildroot/bin/:./buildroot/tests/:${PATH}" \
 	  && export VERBOSE_PLATFORMIO=$(VERBOSE_PLATFORMIO) \
 	  && run_tests . $(TEST_TARGET) "$(ONLY_TEST)"
-.PHONY: tests-single-local
 
 tests-single-local-docker:
 	@if ! test -n "$(TEST_TARGET)" ; then echo "***ERROR*** Set TEST_TARGET=<your-module> or use make tests-all-local-docker" ; return 1; fi
-	docker-compose run --rm marlin $(MAKE) tests-single-local TEST_TARGET=$(TEST_TARGET) VERBOSE_PLATFORMIO=$(VERBOSE_PLATFORMIO) GIT_RESET_HARD=$(GIT_RESET_HARD) ONLY_TEST="$(ONLY_TEST)"
-.PHONY: tests-single-local-docker
+	@if ! $(CONTAINER_RT_BIN) images -q $(CONTAINER_IMAGE) > /dev/null ; then $(MAKE) setup-local-docker ; fi
+	$(CONTAINER_RT_BIN) run $(CONTAINER_RT_OPTS) $(CONTAINER_IMAGE) $(MAKE) tests-single-local TEST_TARGET=$(TEST_TARGET) VERBOSE_PLATFORMIO=$(VERBOSE_PLATFORMIO) GIT_RESET_HARD=$(GIT_RESET_HARD) ONLY_TEST="$(ONLY_TEST)"
 
 tests-all-local:
-	export PATH=./buildroot/bin/:./buildroot/tests/:${PATH} \
+	export PATH="./buildroot/bin/:./buildroot/tests/:${PATH}" \
 	  && export VERBOSE_PLATFORMIO=$(VERBOSE_PLATFORMIO) \
-	  && for TEST_TARGET in $$(./get_test_targets.py) ; do echo "Running tests for $$TEST_TARGET" ; run_tests . $$TEST_TARGET ; done
-.PHONY: tests-all-local
+	  && for TEST_TARGET in $$($(SCRIPTS_DIR)/get_test_targets.py) ; do echo "Running tests for $$TEST_TARGET" ; run_tests . $$TEST_TARGET ; done
 
 tests-all-local-docker:
-	docker-compose run --rm marlin $(MAKE) tests-all-local VERBOSE_PLATFORMIO=$(VERBOSE_PLATFORMIO) GIT_RESET_HARD=$(GIT_RESET_HARD)
-.PHONY: tests-all-local-docker
+	@if ! $(CONTAINER_RT_BIN) images -q $(CONTAINER_IMAGE) > /dev/null ; then $(MAKE) setup-local-docker ; fi
+	$(CONTAINER_RT_BIN) run $(CONTAINER_RT_OPTS) $(CONTAINER_IMAGE) $(MAKE) tests-all-local VERBOSE_PLATFORMIO=$(VERBOSE_PLATFORMIO) GIT_RESET_HARD=$(GIT_RESET_HARD)
 
 setup-local-docker:
-	docker-compose build
-.PHONY: setup-local-docker
+	$(CONTAINER_RT_BIN) build -t $(CONTAINER_IMAGE) -f docker/Dockerfile .
+
+PINS := $(shell find Marlin/src/pins -mindepth 2 -name '*.h')
+
+$(PINS): %:
+	@echo "Formatting $@" && node $(SCRIPTS_DIR)/pinsformat.js $@
+
+format-pins: $(PINS)

Marlin/Makefile

@@ -63,8 +63,8 @@ HARDWARE_MOTHERBOARD ?= 1020
 
 ifeq ($(OS),Windows_NT)
   # Windows
-  ARDUINO_INSTALL_DIR ?= ${HOME}/Arduino
-  ARDUINO_USER_DIR ?= ${HOME}/Arduino
+  ARDUINO_INSTALL_DIR ?= ${HOME}/AppData/Local/Arduino
+  ARDUINO_USER_DIR ?= ${HOME}/Documents/Arduino
 else
   UNAME_S := $(shell uname -s)
   ifeq ($(UNAME_S),Linux)
@@ -82,11 +82,11 @@ endif
 
 # Arduino source install directory, and version number
 # On most linuxes this will be /usr/share/arduino
-ARDUINO_INSTALL_DIR  ?= ${HOME}/Arduino
-ARDUINO_VERSION      ?= 106
+ARDUINO_INSTALL_DIR  ?= ${HOME}/AppData/Local/Arduino       # C:/Users/${USERNAME}/AppData/Local/Arduino
+ARDUINO_VERSION      ?= 10819
 
 # The installed Libraries are in the User folder
-ARDUINO_USER_DIR ?= ${HOME}/Arduino
+ARDUINO_USER_DIR ?= ${HOME}/Documents/Arduino
 
 # You can optionally set a path to the avr-gcc tools.
 # Requires a trailing slash. For example, /usr/local/avr-gcc/bin/
@@ -109,7 +109,7 @@ LIQUID_TWI2        ?= 0
 # This defines if Wire is needed
 WIRE               ?= 0
 
-# This defines if Tone is needed (i.e SPEAKER is defined in Configuration.h)
+# This defines if Tone is needed (i.e., SPEAKER is defined in Configuration.h)
 # Disabling this (and SPEAKER) saves approximately 350 bytes of memory.
 TONE               ?= 1
 
@@ -132,7 +132,7 @@ CC_MIN:=$(shell $(CC) -dM -E - < /dev/null | grep __GNUC_MINOR__ | cut -f3 -d\ )
 CC_PATCHLEVEL:=$(shell $(CC) -dM -E - < /dev/null | grep __GNUC_PATCHLEVEL__ | cut -f3 -d\ )
 CC_VER:=$(shell echo $$(( $(CC_MAJ) * 10000 + $(CC_MIN) * 100 + $(CC_PATCHLEVEL) )))
 ifeq ($(shell test $(CC_VER) -lt 40901 && echo 1),1)
-  @echo This version of GCC is likely broken. Enabling relocation workaround.
+  $(warning This GCC version $(CC_VER) is likely broken. Enabling relocation workaround.)
   RELOC_WORKAROUND = 1
 endif
 
@@ -307,133 +307,22 @@ else ifeq ($(HARDWARE_MOTHERBOARD),1154)
 else ifeq ($(HARDWARE_MOTHERBOARD),1155)
 # Tenlog D3 Hero IDEX printer
 else ifeq ($(HARDWARE_MOTHERBOARD),1156)
-# Ramps S 1.2 by Sakul.cz (Power outputs: Hotend0, Hotend1, Fan, Bed)
+# Tenlog D3,5,6 Pro IDEX printers
 else ifeq ($(HARDWARE_MOTHERBOARD),1157)
-# Ramps S 1.2 by Sakul.cz (Power outputs: Hotend0, Hotend1, Hotend2, Bed)
+# Ramps S 1.2 by Sakul.cz (Power outputs: Hotend0, Hotend1, Fan, Bed)
 else ifeq ($(HARDWARE_MOTHERBOARD),1158)
-# Ramps S 1.2 by Sakul.cz (Power outputs: Hotend, Fan0, Fan1, Bed)
+# Ramps S 1.2 by Sakul.cz (Power outputs: Hotend0, Hotend1, Hotend2, Bed)
 else ifeq ($(HARDWARE_MOTHERBOARD),1159)
-# Longer LK1 PRO / Alfawise U20 Pro (PRO version)
+# Ramps S 1.2 by Sakul.cz (Power outputs: Hotend, Fan0, Fan1, Bed)
 else ifeq ($(HARDWARE_MOTHERBOARD),1160)
-# Longer LKx PRO / Alfawise Uxx Pro (PRO version)
+# Longer LK1 PRO / Alfawise U20 Pro (PRO version)
 else ifeq ($(HARDWARE_MOTHERBOARD),1161)
-
-
-# 3Drag Controller
-else ifeq ($(HARDWARE_MOTHERBOARD),1100)
-# Velleman K8200 Controller (derived from 3Drag Controller)
-else ifeq ($(HARDWARE_MOTHERBOARD),1101)
-# Velleman K8400 Controller (derived from 3Drag Controller)
-else ifeq ($(HARDWARE_MOTHERBOARD),1102)
-# Velleman K8600 Controller (Vertex Nano)
-else ifeq ($(HARDWARE_MOTHERBOARD),1103)
-# Velleman K8800 Controller (Vertex Delta)
-else ifeq ($(HARDWARE_MOTHERBOARD),1104)
-# 2PrintBeta BAM&DICE with STK drivers
-else ifeq ($(HARDWARE_MOTHERBOARD),1105)
-# 2PrintBeta BAM&DICE Due with STK drivers
-else ifeq ($(HARDWARE_MOTHERBOARD),1106)
-# MKS BASE v1.0
-else ifeq ($(HARDWARE_MOTHERBOARD),1107)
-# MKS v1.4 with A4982 stepper drivers
-else ifeq ($(HARDWARE_MOTHERBOARD),1108)
-# MKS v1.5 with Allegro A4982 stepper drivers
-else ifeq ($(HARDWARE_MOTHERBOARD),1109)
-# MKS v1.6 with Allegro A4982 stepper drivers
-else ifeq ($(HARDWARE_MOTHERBOARD),1110)
-# MKS BASE 1.0 with Heroic HR4982 stepper drivers
-else ifeq ($(HARDWARE_MOTHERBOARD),1111)
-# MKS GEN v1.3 or 1.4
-else ifeq ($(HARDWARE_MOTHERBOARD),1112)
-# MKS GEN L
-else ifeq ($(HARDWARE_MOTHERBOARD),1113)
-# zrib V2.0 control board (Chinese RAMPS replica)
-else ifeq ($(HARDWARE_MOTHERBOARD),1114)
-# BigTreeTech or BIQU KFB2.0
-else ifeq ($(HARDWARE_MOTHERBOARD),1115)
-# Felix 2.0+ Electronics Board (RAMPS like)
-else ifeq ($(HARDWARE_MOTHERBOARD),1116)
-# Invent-A-Part RigidBoard
-else ifeq ($(HARDWARE_MOTHERBOARD),1117)
-# Invent-A-Part RigidBoard V2
-else ifeq ($(HARDWARE_MOTHERBOARD),1118)
-# Sainsmart 2-in-1 board
-else ifeq ($(HARDWARE_MOTHERBOARD),1119)
-# Ultimaker
-else ifeq ($(HARDWARE_MOTHERBOARD),1120)
-# Ultimaker (Older electronics. Pre 1.5.4. This is rare)
-else ifeq ($(HARDWARE_MOTHERBOARD),1121)
-  MCU              ?= atmega1280
-  PROG_MCU         ?= m1280
-
-# Azteeg X3
-else ifeq ($(HARDWARE_MOTHERBOARD),1122)
-# Azteeg X3 Pro
-else ifeq ($(HARDWARE_MOTHERBOARD),1123)
-# Ultimainboard 2.x (Uses TEMP_SENSOR 20)
-else ifeq ($(HARDWARE_MOTHERBOARD),1124)
-# Rumba
-else ifeq ($(HARDWARE_MOTHERBOARD),1125)
-# Raise3D Rumba
-else ifeq ($(HARDWARE_MOTHERBOARD),1126)
-# Rapide Lite RL200 Rumba
-else ifeq ($(HARDWARE_MOTHERBOARD),1127)
-# Formbot T-Rex 2 Plus
-else ifeq ($(HARDWARE_MOTHERBOARD),1128)
-# Formbot T-Rex 3
-else ifeq ($(HARDWARE_MOTHERBOARD),1129)
-# Formbot Raptor
-else ifeq ($(HARDWARE_MOTHERBOARD),1130)
-# Formbot Raptor 2
-else ifeq ($(HARDWARE_MOTHERBOARD),1131)
-# bq ZUM Mega 3D
-else ifeq ($(HARDWARE_MOTHERBOARD),1132)
-# MakeBoard Mini v2.1.2 is a control board sold by MicroMake
-else ifeq ($(HARDWARE_MOTHERBOARD),1133)
-# TriGorilla Anycubic version 1.3 based on RAMPS EFB
-else ifeq ($(HARDWARE_MOTHERBOARD),1134)
-# TriGorilla Anycubic version 1.4 based on RAMPS EFB
-else ifeq ($(HARDWARE_MOTHERBOARD),1135)
-# TriGorilla Anycubic version 1.4 Rev 1.1
-else ifeq ($(HARDWARE_MOTHERBOARD),1136)
-# Creality: Ender-4, CR-8
-else ifeq ($(HARDWARE_MOTHERBOARD),1137)
-# Creality: CR10S, CR20, CR-X
-else ifeq ($(HARDWARE_MOTHERBOARD),1138)
-# Dagoma F5
-else ifeq ($(HARDWARE_MOTHERBOARD),1139)
-# FYSETC F6 1.3
-else ifeq ($(HARDWARE_MOTHERBOARD),1140)
-# FYSETC F6 1.5
-else ifeq ($(HARDWARE_MOTHERBOARD),1141)
-# Duplicator i3 Plus
-else ifeq ($(HARDWARE_MOTHERBOARD),1142)
-# VORON
-else ifeq ($(HARDWARE_MOTHERBOARD),1143)
-# TRONXY V3 1.0
-else ifeq ($(HARDWARE_MOTHERBOARD),1144)
-# Z-Bolt X Series
-else ifeq ($(HARDWARE_MOTHERBOARD),1145)
-# TT OSCAR
-else ifeq ($(HARDWARE_MOTHERBOARD),1146)
-# Overlord/Overlord Pro
-else ifeq ($(HARDWARE_MOTHERBOARD),1147)
-# ADIMLab Gantry v1
-else ifeq ($(HARDWARE_MOTHERBOARD),1148)
-# ADIMLab Gantry v2
-else ifeq ($(HARDWARE_MOTHERBOARD),1149)
-# BIQU Tango V1
-else ifeq ($(HARDWARE_MOTHERBOARD),1150)
-# MKS GEN L V2
-else ifeq ($(HARDWARE_MOTHERBOARD),1151)
-# MKS GEN L V2.1
-else ifeq ($(HARDWARE_MOTHERBOARD),1152)
-# Copymaster 3D
-else ifeq ($(HARDWARE_MOTHERBOARD),1153)
-# Ortur 4
-else ifeq ($(HARDWARE_MOTHERBOARD),1154)
-# Tenlog D3 Hero
-else ifeq ($(HARDWARE_MOTHERBOARD),1155)
+# Longer LKx PRO / Alfawise Uxx Pro (PRO version)
+else ifeq ($(HARDWARE_MOTHERBOARD),1162)
+# Zonestar zrib V5.3 (Chinese RAMPS replica)
+else ifeq ($(HARDWARE_MOTHERBOARD),1163)
+# Pxmalion Core I3
+else ifeq ($(HARDWARE_MOTHERBOARD),1164)
 
 #
 # RAMBo and derivatives
@@ -512,7 +401,7 @@ else ifeq ($(HARDWARE_MOTHERBOARD),1324)
 else ifeq ($(HARDWARE_MOTHERBOARD),1325)
 # Intamsys 4.0 (Funmat HT)
 else ifeq ($(HARDWARE_MOTHERBOARD),1326)
-# Malyan M180 Mainboard Version 2 (no display function, direct gcode only)
+# Malyan M180 Mainboard Version 2 (no display function, direct G-code only)
 else ifeq ($(HARDWARE_MOTHERBOARD),1327)
 # Geeetech GT2560 Rev B for A20(M/T/D)
 else ifeq ($(HARDWARE_MOTHERBOARD),1328)
@@ -767,18 +656,18 @@ ifeq ($(HARDWARE_VARIANT), $(filter $(HARDWARE_VARIANT),arduino Teensy Sanguino)
   # Old libraries (avr-core 1.6.21 < / Arduino < 1.6.8)
   VPATH += $(ARDUINO_INSTALL_DIR)/hardware/arduino/avr/libraries/SPI
   # New libraries (avr-core >= 1.6.21 / Arduino >= 1.6.8)
-  VPATH += $(ARDUINO_INSTALL_DIR)/hardware/arduino/avr/libraries/SPI/src
+  VPATH += $(ARDUINO_INSTALL_DIR)/packages/arduino/hardware/arduino/avr/1.8.6/libraries/SPI/src
 endif
 
 ifeq ($(IS_MCU),1)
-  VPATH += $(ARDUINO_INSTALL_DIR)/hardware/arduino/avr/cores/arduino
+  VPATH += $(ARDUINO_INSTALL_DIR)/packages/arduino/hardware/arduino/avr/1.8.6/cores/arduino
 
   # Old libraries (avr-core 1.6.21 < / Arduino < 1.6.8)
   VPATH += $(ARDUINO_INSTALL_DIR)/hardware/arduino/avr/libraries/SPI
   VPATH += $(ARDUINO_INSTALL_DIR)/hardware/arduino/avr/libraries/SoftwareSerial
   # New libraries (avr-core >= 1.6.21 / Arduino >= 1.6.8)
-  VPATH += $(ARDUINO_INSTALL_DIR)/hardware/arduino/avr/libraries/SPI/src
-  VPATH += $(ARDUINO_INSTALL_DIR)/hardware/arduino/avr/libraries/SoftwareSerial/src
+  VPATH += $(ARDUINO_INSTALL_DIR)/packages/arduino/hardware/arduino/avr/1.8.6/libraries/SPI/src
+  VPATH += $(ARDUINO_INSTALL_DIR)/packages/arduino/hardware/arduino/avr/1.8.6/libraries/SoftwareSerial/src
 endif
 
 VPATH += $(ARDUINO_INSTALL_DIR)/libraries/LiquidCrystal/src
@@ -792,17 +681,17 @@ ifeq ($(WIRE), 1)
   VPATH += $(ARDUINO_INSTALL_DIR)/hardware/arduino/avr/libraries/Wire
   VPATH += $(ARDUINO_INSTALL_DIR)/hardware/arduino/avr/libraries/Wire/utility
   # New libraries (avr-core >= 1.6.21 / Arduino >= 1.6.8)
-  VPATH += $(ARDUINO_INSTALL_DIR)/hardware/arduino/avr/libraries/Wire/src
-  VPATH += $(ARDUINO_INSTALL_DIR)/hardware/arduino/avr/libraries/Wire/src/utility
+  VPATH += $(ARDUINO_INSTALL_DIR)/packages/arduino/hardware/avr/1.8.6/libraries/Wire/src
+  VPATH += $(ARDUINO_INSTALL_DIR)/packages/arduino/hardware/avr/1.8.6/libraries/Wire/src/utility
 endif
 ifeq ($(NEOPIXEL), 1)
 VPATH += $(ARDUINO_INSTALL_DIR)/libraries/Adafruit_NeoPixel
 endif
 ifeq ($(U8GLIB), 1)
-VPATH += $(ARDUINO_INSTALL_DIR)/libraries/U8glib
-VPATH += $(ARDUINO_INSTALL_DIR)/libraries/U8glib/csrc
-VPATH += $(ARDUINO_INSTALL_DIR)/libraries/U8glib/cppsrc
-VPATH += $(ARDUINO_INSTALL_DIR)/libraries/U8glib/fntsrc
+VPATH += $(ARDUINO_INSTALL_DIR)/libraries/U8glib-HAL
+VPATH += $(ARDUINO_INSTALL_DIR)/libraries/U8glib-HAL/src
+# VPATH += $(ARDUINO_INSTALL_DIR)/libraries/U8glib
+# VPATH += $(ARDUINO_INSTALL_DIR)/libraries/U8glib/src
 endif
 ifeq ($(TMC), 1)
 VPATH += $(ARDUINO_INSTALL_DIR)/libraries/TMCStepper/src
@@ -811,9 +700,9 @@ endif
 
 ifeq ($(HARDWARE_VARIANT), arduino)
   HARDWARE_SUB_VARIANT ?= mega
-  VPATH += $(ARDUINO_INSTALL_DIR)/hardware/arduino/avr/variants/$(HARDWARE_SUB_VARIANT)
+  VPATH += $(ARDUINO_INSTALL_DIR)/packages/arduino/hardware/avr/1.8.6/variants/$(HARDWARE_SUB_VARIANT)
 else ifeq ($(HARDWARE_VARIANT), Sanguino)
-  VPATH += $(ARDUINO_INSTALL_DIR)/hardware/marlin/avr/variants/sanguino
+  VPATH += $(ARDUINO_INSTALL_DIR)/packages/arduino/hardware/avr/1.8.6/variants/sanguino
 else ifeq ($(HARDWARE_VARIANT), archim)
   VPATH   += $(ARDUINO_INSTALL_DIR)/packages/ultimachine/hardware/sam/1.6.9-b/system/libsam
   VPATH   += $(ARDUINO_INSTALL_DIR)/packages/ultimachine/hardware/sam/1.6.9-b/system/CMSIS/CMSIS/Include/
@@ -829,7 +718,7 @@ else ifeq ($(HARDWARE_VARIANT), archim)
   LDLIBS   = $(ARDUINO_INSTALL_DIR)/packages/ultimachine/hardware/sam/1.6.9-b/variants/archim/libsam_sam3x8e_gcc_rel.a
 else
   HARDWARE_SUB_VARIANT ?= standard
-  VPATH += $(ARDUINO_INSTALL_DIR)/hardware/$(HARDWARE_VARIANT)/variants/$(HARDWARE_SUB_VARIANT)
+  VPATH += $(ARDUINO_INSTALL_DIR)/packages/arduino/hardware/avr/1.8.6/variants/$(HARDWARE_SUB_VARIANT)
 endif
 
 LIB_SRC = wiring.c \
@@ -844,7 +733,7 @@ endif
 
 ifeq ($(HARDWARE_VARIANT), Teensy)
   LIB_SRC = wiring.c
-  VPATH += $(ARDUINO_INSTALL_DIR)/hardware/teensy/cores/teensy
+  VPATH += $(ARDUINO_INSTALL_DIR)/packages/arduino/hardware/teensy/cores/teensy
 endif
 
 LIB_CXXSRC = WMath.cpp WString.cpp Print.cpp SPI.cpp
@@ -991,7 +880,7 @@ AVRDUDE_WRITE_FLASH = -Uflash:w:$(BUILD_DIR)/$(TARGET).hex:i
 ifeq ($(shell uname -s), Linux)
   AVRDUDE_CONF = /etc/avrdude/avrdude.conf
 else
-  AVRDUDE_CONF = $(ARDUINO_INSTALL_DIR)/hardware/tools/avr/etc/avrdude.conf
+  AVRDUDE_CONF = $(ARDUINO_INSTALL_DIR)/packages/arduino/tools/avrdude/6.3.0-arduino17/etc/avrdude.conf
 endif
 AVRDUDE_FLAGS = -D -C$(AVRDUDE_CONF) \
   -p$(PROG_MCU) -P$(AVRDUDE_PORT) -c$(AVRDUDE_PROGRAMMER) \

Marlin/Marlin.ino

@@ -2,7 +2,7 @@
 
   Marlin Firmware
 
-  (c) 2011-2020 MarlinFirmware
+  (c) 2011-2024 MarlinFirmware
   Portions of Marlin are (c) by their respective authors.
   All code complies with GPLv2 and/or GPLv3
 
@@ -27,7 +27,7 @@ Configuration
   - https://github.com/MarlinFirmware/Configurations
     Example configurations for several printer models.
 
-  - https://www.youtube.com/watch?v=3gwWVFtdg-4
+  - https://youtu.be/3gwWVFtdg-4
     A good 20-minute overview of Marlin configuration by Tom Sanladerer.
     (Applies to Marlin 1.0.x, so Jerk and Acceleration should be halved.)
     Also... https://www.google.com/search?tbs=vid%3A1&q=configure+marlin

Marlin/Version.h

@@ -28,7 +28,7 @@
 /**
  * Marlin release version identifier
  */
-//#define SHORT_BUILD_VERSION "2.0.9.3"
+//#define SHORT_BUILD_VERSION "2.1.2.4"
 
 /**
  * Verbose version identifier which should contain a reference to the location
@@ -41,7 +41,7 @@
  * here we define this default string as the date where the latest release
  * version was tagged.
  */
-//#define STRING_DISTRIBUTION_DATE "2021-12-25"
+//#define STRING_DISTRIBUTION_DATE "2024-05-29"
 
 /**
  * Defines a generic printer name to be output to the LCD after booting Marlin.

Marlin/config.ini

@@ -0,0 +1,251 @@
+#
+# Marlin Firmware
+# config.ini - Options to apply before the build
+#
+[config:base]
+#
+# ini_use_config - A comma-separated list of actions to apply to the Configuration files.
+#                  The actions will be applied in the listed order.
+#  - none
+#    Ignore this file and don't apply any configuration options
+#
+#  - base
+#    Just apply the options in config:base to the configuration
+#
+#  - minimal
+#    Just apply the options in config:minimal to the configuration
+#
+#  - all
+#    Apply all 'config:*' sections in this file to the configuration
+#
+#  - another.ini
+#    Load another INI file with a path relative to this config.ini file (i.e., within Marlin/)
+#
+#  - https://me.myserver.com/path/to/configs
+#    Fetch configurations from any URL.
+#
+#  - example/Creality/Ender-5 Plus @ bugfix-2.1.x
+#    Fetch example configuration files from the MarlinFirmware/Configurations repository
+#    https://raw.githubusercontent.com/MarlinFirmware/Configurations/bugfix-2.1.x/config/examples/Creality/Ender-5%20Plus/
+#
+#  - example/default @ release-2.0.9.7
+#    Fetch default configuration files from the MarlinFirmware/Configurations repository
+#    https://raw.githubusercontent.com/MarlinFirmware/Configurations/release-2.0.9.7/config/default/
+#
+#  - [disable]
+#    Comment out all #defines in both Configuration.h and Configuration_adv.h. This is useful
+#    to start with a clean slate before applying any config: options, so only the options explicitly
+#    set in config.ini will be enabled in the configuration.
+#
+#  - [flatten] (Not yet implemented)
+#    Produce a flattened set of Configuration.h and Configuration_adv.h files with only the enabled
+#    #defines and no comments. A clean look, but context-free.
+#
+ini_use_config                           = none
+
+# Load all config: sections in this file
+;ini_use_config                          = all
+# Disable everything and apply subsequent config:base options
+;ini_use_config                          = [disable], base
+# Load config file relative to Marlin/
+;ini_use_config                          = another.ini
+# Download configurations from GitHub
+;ini_use_config                          = example/Creality/Ender-5 Plus @ bugfix-2.1.x
+# Download configurations from your server
+;ini_use_config                          = https://me.myserver.com/path/to/configs
+# Evaluate config:base and do a config dump
+;ini_use_config                          = base
+;config_export                           = 2
+
+[config:minimal]
+motherboard                              = BOARD_RAMPS_14_EFB
+serial_port                              = 0
+baudrate                                 = 250000
+
+use_watchdog                             = on
+thermal_protection_hotends               = on
+thermal_protection_hysteresis            = 4
+thermal_protection_period                = 40
+
+bufsize                                  = 4
+block_buffer_size                        = 16
+max_cmd_size                             = 96
+
+extruders                                = 1
+temp_sensor_0                            = 1
+
+temp_hysteresis                          = 3
+heater_0_mintemp                         = 5
+heater_0_maxtemp                         = 275
+preheat_1_temp_hotend                    = 180
+
+bang_max                                 = 255
+pidtemp                                  = on
+pid_k1                                   = 0.95
+pid_max                                  = 255
+pid_functional_range                     = 10
+
+default_kp                               = 22.20
+default_ki                               = 1.08
+default_kd                               = 114.00
+
+x_driver_type                            = A4988
+y_driver_type                            = A4988
+z_driver_type                            = A4988
+e0_driver_type                           = A4988
+
+x_bed_size                               = 200
+x_min_pos                                = 0
+x_max_pos                                = X_BED_SIZE
+
+y_bed_size                               = 200
+y_min_pos                                = 0
+y_max_pos                                = Y_BED_SIZE
+
+z_min_pos                                = 0
+z_max_pos                                = 200
+
+x_home_dir                               = -1
+y_home_dir                               = -1
+z_home_dir                               = -1
+
+use_xmin_plug                            = on
+use_ymin_plug                            = on
+use_zmin_plug                            = on
+
+x_min_endstop_inverting                  = false
+y_min_endstop_inverting                  = false
+z_min_endstop_inverting                  = false
+
+default_axis_steps_per_unit              = { 80, 80, 400, 500 }
+axis_relative_modes                      = { false, false, false, false }
+default_max_feedrate                     = { 300, 300, 5, 25 }
+default_max_acceleration                 = { 3000, 3000, 100, 10000 }
+
+homing_feedrate_mm_m                     = { (50*60), (50*60), (4*60) }
+homing_bump_divisor                      = { 2, 2, 4 }
+
+x_enable_on                              = 0
+y_enable_on                              = 0
+z_enable_on                              = 0
+e_enable_on                              = 0
+
+invert_x_dir                             = false
+invert_y_dir                             = true
+invert_z_dir                             = false
+invert_e0_dir                            = false
+
+invert_e_step_pin                        = false
+invert_x_step_pin                        = false
+invert_y_step_pin                        = false
+invert_z_step_pin                        = false
+
+disable_x                                = off
+disable_y                                = off
+disable_z                                = off
+disable_e                                = off
+
+proportional_font_ratio                  = 1.0
+default_nominal_filament_dia             = 1.75
+
+junction_deviation_mm                    = 0.013
+
+default_acceleration                     = 3000
+default_travel_acceleration              = 3000
+default_retract_acceleration             = 3000
+
+default_minimumfeedrate                  = 0.0
+default_mintravelfeedrate                = 0.0
+
+minimum_planner_speed                    = 0.05
+min_steps_per_segment                    = 6
+default_minsegmenttime                   = 20000
+
+[config:basic]
+bed_overshoot                            = 10
+busy_while_heating                       = on
+default_ejerk                            = 5.0
+default_keepalive_interval               = 2
+default_leveling_fade_height             = 0.0
+disable_other_extruders                  = on
+display_charset_hd44780                  = JAPANESE
+eeprom_boot_silent                       = on
+eeprom_chitchat                          = on
+endstoppullups                           = on
+extrude_maxlength                        = 200
+extrude_mintemp                          = 170
+host_keepalive_feature                   = on
+hotend_overshoot                         = 15
+jd_handle_small_segments                 = on
+lcd_info_screen_style                    = 0
+lcd_language                             = en
+max_bed_power                            = 255
+mesh_inset                               = 0
+min_software_endstops                    = on
+max_software_endstops                    = on
+min_software_endstop_x                   = on
+min_software_endstop_y                   = on
+min_software_endstop_z                   = on
+max_software_endstop_x                   = on
+max_software_endstop_y                   = on
+max_software_endstop_z                   = on
+preheat_1_fan_speed                      = 0
+preheat_1_label                          = "PLA"
+preheat_1_temp_bed                       = 70
+prevent_cold_extrusion                   = on
+prevent_lengthy_extrude                  = on
+printjob_timer_autostart                 = on
+probing_margin                           = 10
+show_bootscreen                          = on
+soft_pwm_scale                           = 0
+string_config_h_author                   = "(none, default config)"
+temp_bed_hysteresis                      = 3
+temp_bed_residency_time                  = 10
+temp_bed_window                          = 1
+temp_residency_time                      = 10
+temp_window                              = 1
+validate_homing_endstops                 = on
+xy_probe_feedrate                        = (133*60)
+z_clearance_between_probes               = 5
+z_clearance_deploy_probe                 = 10
+z_clearance_multi_probe                  = 5
+
+[config:advanced]
+arc_support                              = on
+auto_report_temperatures                 = on
+autotemp                                 = on
+autotemp_oldweight                       = 0.98
+bed_check_interval                       = 5000
+default_stepper_timeout_sec              = 120
+default_volumetric_extruder_limit        = 0.00
+disable_idle_x                           = on
+disable_idle_y                           = on
+disable_idle_z                           = on
+disable_idle_e                           = on
+e0_auto_fan_pin                          = -1
+encoder_100x_steps_per_sec               = 80
+encoder_10x_steps_per_sec                = 30
+encoder_rate_multiplier                  = on
+extended_capabilities_report             = on
+extruder_auto_fan_speed                  = 255
+extruder_auto_fan_temperature            = 50
+fanmux0_pin                              = -1
+fanmux1_pin                              = -1
+fanmux2_pin                              = -1
+faster_gcode_parser                      = on
+homing_bump_mm                           = { 5, 5, 2 }
+max_arc_segment_mm                       = 1.0
+min_arc_segment_mm                       = 0.1
+min_circle_segments                      = 72
+n_arc_correction                         = 25
+serial_overrun_protection                = on
+slowdown                                 = on
+slowdown_divisor                         = 2
+temp_sensor_bed                          = 0
+thermal_protection_bed_hysteresis        = 2
+thermocouple_max_errors                  = 15
+tx_buffer_size                           = 0
+watch_bed_temp_increase                  = 2
+watch_bed_temp_period                    = 60
+watch_temp_increase                      = 2
+watch_temp_period                        = 20

Marlin/src/HAL/AVR/HAL.cpp

@@ -23,6 +23,7 @@
 
 #include "../../inc/MarlinConfig.h"
 #include "HAL.h"
+#include <avr/wdt.h>
 
 #ifdef USBCON
   DefaultSerial1 MSerial0(false, Serial);
@@ -36,7 +37,7 @@
 // ------------------------
 
 // Don't initialize/override variable (which would happen in .init4)
-uint8_t reset_reason __attribute__((section(".noinit")));
+uint8_t MarlinHAL::reset_reason __attribute__((section(".noinit")));
 
 // ------------------------
 // Public functions
@@ -45,39 +46,46 @@ uint8_t reset_reason __attribute__((section(".noinit")));
 __attribute__((naked))             // Don't output function pro- and epilogue
 __attribute__((used))              // Output the function, even if "not used"
 __attribute__((section(".init3"))) // Put in an early user definable section
-void HAL_save_reset_reason() {
+void save_reset_reason() {
   #if ENABLED(OPTIBOOT_RESET_REASON)
     __asm__ __volatile__(
       A("STS %0, r2")
-      : "=m"(reset_reason)
+      : "=m"(hal.reset_reason)
     );
   #else
-    reset_reason = MCUSR;
+    hal.reset_reason = MCUSR;
   #endif
 
   // Clear within 16ms since WDRF bit enables a 16ms watchdog timer -> Boot loop
-  MCUSR = 0;
+  hal.clear_reset_source();
   wdt_disable();
 }
 
-void HAL_init() {
+void MarlinHAL::init() {
   // Init Servo Pins
-  #define INIT_SERVO(N) OUT_WRITE(SERVO##N##_PIN, LOW)
   #if HAS_SERVO_0
-    INIT_SERVO(0);
+    OUT_WRITE(SERVO0_PIN, LOW);
   #endif
   #if HAS_SERVO_1
-    INIT_SERVO(1);
+    OUT_WRITE(SERVO1_PIN, LOW);
   #endif
   #if HAS_SERVO_2
-    INIT_SERVO(2);
+    OUT_WRITE(SERVO2_PIN, LOW);
   #endif
   #if HAS_SERVO_3
-    INIT_SERVO(3);
+    OUT_WRITE(SERVO3_PIN, LOW);
   #endif
+  #if HAS_SERVO_4
+    OUT_WRITE(SERVO4_PIN, LOW);
+  #endif
+  #if HAS_SERVO_5
+    OUT_WRITE(SERVO5_PIN, LOW);
+  #endif
+
+  init_pwm_timers();   // Init user timers to default frequency - 1000HZ
 }
 
-void HAL_reboot() {
+void MarlinHAL::reboot() {
   #if ENABLED(USE_WATCHDOG)
     while (1) { /* run out the watchdog */ }
   #else
@@ -86,28 +94,84 @@ void HAL_reboot() {
   #endif
 }
 
-#if ENABLED(SDSUPPORT)
+// ------------------------
+// Watchdog Timer
+// ------------------------
+
+#if ENABLED(USE_WATCHDOG)
+
+  #include <avr/wdt.h>
+  #include "../../MarlinCore.h"
+
+  // Initialize watchdog with 8s timeout, if possible. Otherwise, make it 4s.
+  void MarlinHAL::watchdog_init() {
+    #if ENABLED(WATCHDOG_DURATION_8S) && defined(WDTO_8S)
+      #define WDTO_NS WDTO_8S
+    #else
+      #define WDTO_NS WDTO_4S
+    #endif
+    #if ENABLED(WATCHDOG_RESET_MANUAL)
+      // Enable the watchdog timer, but only for the interrupt.
+      // Take care, as this requires the correct order of operation, with interrupts disabled.
+      // See the datasheet of any AVR chip for details.
+      wdt_reset();
+      cli();
+      _WD_CONTROL_REG = _BV(_WD_CHANGE_BIT) | _BV(WDE);
+      _WD_CONTROL_REG = _BV(WDIE) | (WDTO_NS & 0x07) | ((WDTO_NS & 0x08) << 2); // WDTO_NS directly does not work. bit 0-2 are consecutive in the register but the highest value bit is at bit 5
+                                                                                // So worked for up to WDTO_2S
+      sei();
+      wdt_reset();
+    #else
+      wdt_enable(WDTO_NS); // The function handles the upper bit correct.
+    #endif
+    //delay(10000); // test it!
+  }
+
+  //===========================================================================
+  //=================================== ISR ===================================
+  //===========================================================================
+
+  // Watchdog timer interrupt, called if main program blocks >4sec and manual reset is enabled.
+  #if ENABLED(WATCHDOG_RESET_MANUAL)
+    ISR(WDT_vect) {
+      sei();  // With the interrupt driven serial we need to allow interrupts.
+      SERIAL_ERROR_MSG(STR_WATCHDOG_FIRED);
+      minkill();  // interrupt-safe final kill and infinite loop
+    }
+  #endif
+
+  // Reset watchdog. MUST be called at least every 4 seconds after the
+  // first watchdog_init or AVR will go into emergency procedures.
+  void MarlinHAL::watchdog_refresh() { wdt_reset(); }
+
+#endif // USE_WATCHDOG
+
+// ------------------------
+// Free Memory Accessor
+// ------------------------
+
+#if HAS_MEDIA
 
   #include "../../sd/SdFatUtil.h"
   int freeMemory() { return SdFatUtil::FreeRam(); }
 
-#else // !SDSUPPORT
+#else // !HAS_MEDIA
 
-extern "C" {
-  extern char __bss_end;
-  extern char __heap_start;
-  extern void* __brkval;
+  extern "C" {
+    extern char __bss_end;
+    extern char __heap_start;
+    extern void* __brkval;
 
-  int freeMemory() {
-    int free_memory;
-    if ((int)__brkval == 0)
-      free_memory = ((int)&free_memory) - ((int)&__bss_end);
-    else
-      free_memory = ((int)&free_memory) - ((int)__brkval);
-    return free_memory;
+    int freeMemory() {
+      int free_memory;
+      if ((int)__brkval == 0)
+        free_memory = ((int)&free_memory) - ((int)&__bss_end);
+      else
+        free_memory = ((int)&free_memory) - ((int)__brkval);
+      return free_memory;
+    }
   }
-}
 
-#endif // !SDSUPPORT
+#endif // !HAS_MEDIA
 
 #endif // __AVR__

Marlin/src/HAL/AVR/HAL.h

@@ -1,7 +1,9 @@
 /**
  * Marlin 3D Printer Firmware
  * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
- * Copyright (c) 2016 Bob Cousins bobcousins42@googlemail.com
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -19,17 +21,20 @@
  */
 #pragma once
 
+/**
+ * HAL for Arduino AVR
+ */
+
 #include "../shared/Marduino.h"
 #include "../shared/HAL_SPI.h"
 #include "fastio.h"
-#include "watchdog.h"
 #include "math.h"
 
 #ifdef USBCON
   #include <HardwareSerial.h>
 #else
-  #define HardwareSerial_h // Hack to prevent HardwareSerial.h header inclusion
   #include "MarlinSerial.h"
+  #define BOARD_NO_NATIVE_USB
 #endif
 
 #include <stdint.h>
@@ -74,9 +79,9 @@
   #define CRITICAL_SECTION_START()  unsigned char _sreg = SREG; cli()
   #define CRITICAL_SECTION_END()    SREG = _sreg
 #endif
-#define ISRS_ENABLED() TEST(SREG, SREG_I)
-#define ENABLE_ISRS()  sei()
-#define DISABLE_ISRS() cli()
+
+#define HAL_CAN_SET_PWM_FREQ   // This HAL supports PWM Frequency adjustment
+#define PWM_FREQUENCY 1000     // Default PWM frequency when set_pwm_duty() is called without set_pwm_frequency()
 
 // ------------------------
 // Types
@@ -84,16 +89,15 @@
 
 typedef int8_t pin_t;
 
-#define SHARED_SERVOS HAS_SERVOS
-#define HAL_SERVO_LIB Servo
+#define SHARED_SERVOS HAS_SERVOS  // Use shared/servos.cpp
+
+class Servo;
+typedef Servo hal_servo_t;
 
 // ------------------------
-// Public Variables
-// ------------------------
-
-extern uint8_t reset_reason;
-
 // Serial ports
+// ------------------------
+
 #ifdef USBCON
   #include "../../core/serial_hook.h"
   typedef ForwardSerial1Class< decltype(Serial) > DefaultSerial1;
@@ -105,94 +109,52 @@ extern uint8_t reset_reason;
 
   #define MYSERIAL1 TERN(BLUETOOTH, btSerial, MSerial0)
 #else
-  #if !WITHIN(SERIAL_PORT, -1, 3)
-    #error "SERIAL_PORT must be from 0 to 3, or -1 for USB Serial."
+  #if !WITHIN(SERIAL_PORT, 0, 3)
+    #error "SERIAL_PORT must be from 0 to 3."
   #endif
   #define MYSERIAL1 customizedSerial1
 
   #ifdef SERIAL_PORT_2
-    #if !WITHIN(SERIAL_PORT_2, -1, 3)
-      #error "SERIAL_PORT_2 must be from 0 to 3, or -1 for USB Serial."
+    #if !WITHIN(SERIAL_PORT_2, 0, 3)
+      #error "SERIAL_PORT_2 must be from 0 to 3."
     #endif
     #define MYSERIAL2 customizedSerial2
   #endif
 
   #ifdef SERIAL_PORT_3
-    #if !WITHIN(SERIAL_PORT_3, -1, 3)
-      #error "SERIAL_PORT_3 must be from 0 to 3, or -1 for USB Serial."
+    #if !WITHIN(SERIAL_PORT_3, 0, 3)
+      #error "SERIAL_PORT_3 must be from 0 to 3."
     #endif
     #define MYSERIAL3 customizedSerial3
   #endif
 #endif
 
 #ifdef MMU2_SERIAL_PORT
-  #if !WITHIN(MMU2_SERIAL_PORT, -1, 3)
-    #error "MMU2_SERIAL_PORT must be from 0 to 3, or -1 for USB Serial."
+  #if !WITHIN(MMU2_SERIAL_PORT, 0, 3)
+    #error "MMU2_SERIAL_PORT must be from 0 to 3"
   #endif
   #define MMU2_SERIAL mmuSerial
 #endif
 
 #ifdef LCD_SERIAL_PORT
-  #if !WITHIN(LCD_SERIAL_PORT, -1, 3)
-    #error "LCD_SERIAL_PORT must be from 0 to 3, or -1 for USB Serial."
+  #if !WITHIN(LCD_SERIAL_PORT, 0, 3)
+    #error "LCD_SERIAL_PORT must be from 0 to 3."
   #endif
   #define LCD_SERIAL lcdSerial
   #if HAS_DGUS_LCD
-    #define SERIAL_GET_TX_BUFFER_FREE() LCD_SERIAL.get_tx_buffer_free()
+    #define LCD_SERIAL_TX_BUFFER_FREE() LCD_SERIAL.get_tx_buffer_free()
   #endif
 #endif
 
-// ------------------------
-// Public functions
-// ------------------------
-
-void HAL_init();
-
-//void cli();
-
-//void _delay_ms(const int delay);
-
-inline void HAL_clear_reset_source() { }
-inline uint8_t HAL_get_reset_source() { return reset_reason; }
-
-void HAL_reboot();
-
-#pragma GCC diagnostic push
-#if GCC_VERSION <= 50000
-  #pragma GCC diagnostic ignored "-Wunused-function"
-#endif
-
-extern "C" int freeMemory();
-
-#pragma GCC diagnostic pop
-
+//
 // ADC
-#ifdef DIDR2
-  #define HAL_ANALOG_SELECT(ind) do{ if (ind < 8) SBI(DIDR0, ind); else SBI(DIDR2, ind & 0x07); }while(0)
-#else
-  #define HAL_ANALOG_SELECT(ind) SBI(DIDR0, ind);
-#endif
-
-inline void HAL_adc_init() {
-  ADCSRA = _BV(ADEN) | _BV(ADSC) | _BV(ADIF) | 0x07;
-  DIDR0 = 0;
-  #ifdef DIDR2
-    DIDR2 = 0;
-  #endif
-}
-
-#define SET_ADMUX_ADCSRA(ch) ADMUX = _BV(REFS0) | (ch & 0x07); SBI(ADCSRA, ADSC)
-#ifdef MUX5
-  #define HAL_START_ADC(ch) if (ch > 7) ADCSRB = _BV(MUX5); else ADCSRB = 0; SET_ADMUX_ADCSRA(ch)
-#else
-  #define HAL_START_ADC(ch) ADCSRB = 0; SET_ADMUX_ADCSRA(ch)
-#endif
-
-#define HAL_ADC_VREF        5.0
-#define HAL_ADC_RESOLUTION 10
-#define HAL_READ_ADC()  ADC
-#define HAL_ADC_READY() !TEST(ADCSRA, ADSC)
+//
+#define HAL_ADC_VREF_MV   5000
+#define HAL_ADC_RESOLUTION  10
 
+//
+// Pin Mapping for M42, M43, M226
+//
 #define GET_PIN_MAP_PIN(index) index
 #define GET_PIN_MAP_INDEX(pin) pin
 #define PARSED_PIN_INDEX(code, dval) parser.intval(code, dval)
@@ -206,23 +168,113 @@ inline void HAL_adc_init() {
 // AVR compatibility
 #define strtof strtod
 
-#define HAL_CAN_SET_PWM_FREQ   // This HAL supports PWM Frequency adjustment
+// ------------------------
+// Free Memory Accessor
+// ------------------------
 
-/**
- *  set_pwm_frequency
- *  Sets the frequency of the timer corresponding to the provided pin
- *  as close as possible to the provided desired frequency. Internally
- *  calculates the required waveform generation mode, prescaler and
- *  resolution values required and sets the timer registers accordingly.
- *  NOTE that the frequency is applied to all pins on the timer (Ex OC3A, OC3B and OC3B)
- *  NOTE that there are limitations, particularly if using TIMER2. (see Configuration_adv.h -> FAST FAN PWM Settings)
- */
-void set_pwm_frequency(const pin_t pin, int f_desired);
+#pragma GCC diagnostic push
+#if GCC_VERSION <= 50000
+  #pragma GCC diagnostic ignored "-Wunused-function"
+#endif
 
-/**
- * set_pwm_duty
- *  Set the PWM duty cycle of the provided pin to the provided value
- *  Optionally allows inverting the duty cycle [default = false]
- *  Optionally allows changing the maximum size of the provided value to enable finer PWM duty control [default = 255]
- */
-void set_pwm_duty(const pin_t pin, const uint16_t v, const uint16_t v_size=255, const bool invert=false);
+extern "C" int freeMemory();
+
+#pragma GCC diagnostic pop
+
+// ------------------------
+// MarlinHAL Class
+// ------------------------
+
+class MarlinHAL {
+public:
+
+  // Earliest possible init, before setup()
+  MarlinHAL() {}
+
+  // Watchdog
+  static void watchdog_init()    IF_DISABLED(USE_WATCHDOG, {});
+  static void watchdog_refresh() IF_DISABLED(USE_WATCHDOG, {});
+
+  static void init();          // Called early in setup()
+  static void init_board() {}  // Called less early in setup()
+  static void reboot();        // Restart the firmware from 0x0
+
+  // Interrupts
+  static bool isr_state() { return TEST(SREG, SREG_I); }
+  static void isr_on()  { sei(); }
+  static void isr_off() { cli(); }
+
+  static void delay_ms(const int ms) { _delay_ms(ms); }
+
+  // Tasks, called from idle()
+  static void idletask() {}
+
+  // Reset
+  static uint8_t reset_reason;
+  static uint8_t get_reset_source() { return reset_reason; }
+  static void clear_reset_source() { MCUSR = 0; }
+
+  // Free SRAM
+  static int freeMemory() { return ::freeMemory(); }
+
+  //
+  // ADC Methods
+  //
+
+  // Called by Temperature::init once at startup
+  static void adc_init() {
+    ADCSRA = _BV(ADEN) | _BV(ADSC) | _BV(ADIF) | 0x07;
+    DIDR0 = 0;
+    #ifdef DIDR2
+      DIDR2 = 0;
+    #endif
+  }
+
+  // Called by Temperature::init for each sensor at startup
+  static void adc_enable(const uint8_t ch) {
+    #ifdef DIDR2
+      if (ch > 7) { SBI(DIDR2, ch & 0x07); return; }
+    #endif
+    SBI(DIDR0, ch);
+  }
+
+  // Begin ADC sampling on the given channel. Called from Temperature::isr!
+  static void adc_start(const uint8_t ch) {
+    #ifdef MUX5
+      ADCSRB = ch > 7 ? _BV(MUX5) : 0;
+    #else
+      ADCSRB = 0;
+    #endif
+    ADMUX = _BV(REFS0) | (ch & 0x07);
+    SBI(ADCSRA, ADSC);
+  }
+
+  // Is the ADC ready for reading?
+  static bool adc_ready() { return !TEST(ADCSRA, ADSC); }
+
+  // The current value of the ADC register
+  static __typeof__(ADC) adc_value() { return ADC; }
+
+  /**
+   * init_pwm_timers
+   * Set the default frequency for timers 2-5 to 1000HZ
+   */
+  static void init_pwm_timers();
+
+  /**
+   * Set the PWM duty cycle for the pin to the given value.
+   * Optionally invert the duty cycle [default = false]
+   * Optionally change the scale of the provided value to enable finer PWM duty control [default = 255]
+   */
+  static void set_pwm_duty(const pin_t pin, const uint16_t v, const uint16_t v_size=255, const bool invert=false);
+
+  /**
+   * Set the frequency of the timer for the given pin as close as
+   * possible to the provided desired frequency. Internally calculate
+   * the required waveform generation mode, prescaler, and resolution
+   * values and set timer registers accordingly.
+   * NOTE that the frequency is applied to all pins on the timer (Ex OC3A, OC3B and OC3B)
+   * NOTE that there are limitations, particularly if using TIMER2. (see Configuration_adv.h -> FAST_PWM_FAN Settings)
+   */
+  static void set_pwm_frequency(const pin_t pin, const uint16_t f_desired);
+};

Marlin/src/HAL/AVR/HAL_SPI.cpp

@@ -35,22 +35,20 @@
 
 void spiBegin() {
   #if PIN_EXISTS(SD_SS)
-    OUT_WRITE(SD_SS_PIN, HIGH);
+    // Do not init HIGH for boards with pin 4 used as Fans or Heaters or otherwise, not likely to have multiple SPI devices anyway.
+    #if defined(__AVR_ATmega644__) || defined(__AVR_ATmega644P__) || defined(__AVR_ATmega644PA__) || defined(__AVR_ATmega1284P__)
+      // SS must be in output mode even it is not chip select
+      SET_OUTPUT(SD_SS_PIN);
+    #else
+      // set SS high - may be chip select for another SPI device
+      OUT_WRITE(SD_SS_PIN, HIGH);
+    #endif
   #endif
   SET_OUTPUT(SD_SCK_PIN);
   SET_INPUT(SD_MISO_PIN);
   SET_OUTPUT(SD_MOSI_PIN);
 
-  #if DISABLED(SOFTWARE_SPI)
-    // SS must be in output mode even it is not chip select
-    //SET_OUTPUT(SD_SS_PIN);
-    // set SS high - may be chip select for another SPI device
-    //#if SET_SPI_SS_HIGH
-      //WRITE(SD_SS_PIN, HIGH);
-    //#endif
-    // set a default rate
-    spiInit(1);
-  #endif
+  IF_DISABLED(SOFTWARE_SPI, spiInit(SPI_HALF_SPEED));
 }
 
 #if NONE(SOFTWARE_SPI, FORCE_SOFT_SPI)
@@ -121,7 +119,6 @@ void spiBegin() {
     while (!TEST(SPSR, SPIF)) { /* Intentionally left empty */ }
   }
 
-
   /** begin spi transaction */
   void spiBeginTransaction(uint32_t spiClock, uint8_t bitOrder, uint8_t dataMode) {
     // Based on Arduino SPI library
@@ -177,7 +174,6 @@ void spiBegin() {
     SPSR = clockDiv | 0x01;
   }
 
-
 #else // SOFTWARE_SPI || FORCE_SOFT_SPI
 
   // ------------------------
@@ -200,7 +196,7 @@ void spiBegin() {
     // output pin high - like sending 0xFF
     WRITE(SD_MOSI_PIN, HIGH);
 
-    LOOP_L_N(i, 8) {
+    for (uint8_t i = 0; i < 8; ++i) {
       WRITE(SD_SCK_PIN, HIGH);
 
       nop; // adjust so SCK is nice
@@ -227,7 +223,7 @@ void spiBegin() {
   void spiSend(uint8_t data) {
     // no interrupts during byte send - about 8µs
     cli();
-    LOOP_L_N(i, 8) {
+    for (uint8_t i = 0; i < 8; ++i) {
       WRITE(SD_SCK_PIN, LOW);
       WRITE(SD_MOSI_PIN, data & 0x80);
       data <<= 1;

Marlin/src/HAL/AVR/MarlinSerial.cpp

@@ -486,7 +486,7 @@ void MarlinSerial<Cfg>::write(const uint8_t c) {
     const uint8_t i = (tx_buffer.head + 1) & (Cfg::TX_SIZE - 1);
 
     // If global interrupts are disabled (as the result of being called from an ISR)...
-    if (!ISRS_ENABLED()) {
+    if (!hal.isr_state()) {
 
       // Make room by polling if it is possible to transmit, and do so!
       while (i == tx_buffer.tail) {
@@ -534,7 +534,7 @@ void MarlinSerial<Cfg>::flushTX() {
     if (!_written) return;
 
     // If global interrupts are disabled (as the result of being called from an ISR)...
-    if (!ISRS_ENABLED()) {
+    if (!hal.isr_state()) {
 
       // Wait until everything was transmitted - We must do polling, as interrupts are disabled
       while (tx_buffer.head != tx_buffer.tail || !B_TXC) {

Marlin/src/HAL/AVR/MarlinSerial.h

@@ -34,12 +34,9 @@
 #include <WString.h>
 
 #include "../../inc/MarlinConfigPre.h"
+#include "../../core/types.h"
 #include "../../core/serial_hook.h"
 
-#ifndef SERIAL_PORT
-  #define SERIAL_PORT 0
-#endif
-
 #ifndef USBCON
 
   // The presence of the UBRRH register is used to detect a UART.
@@ -138,10 +135,6 @@
 
   #define BYTE 0
 
-  // Templated type selector
-  template<bool b, typename T, typename F> struct TypeSelector { typedef T type;} ;
-  template<typename T, typename F> struct TypeSelector<false, T, F> { typedef F type; };
-
   template<typename Cfg>
   class MarlinSerial {
   protected:
@@ -164,7 +157,7 @@
     static constexpr B_U2Xx<Cfg::PORT>   B_U2X   = 0;
 
     // Base size of type on buffer size
-    typedef typename TypeSelector<(Cfg::RX_SIZE>256), uint16_t, uint8_t>::type ring_buffer_pos_t;
+    typedef uvalue_t(Cfg::RX_SIZE - 1) ring_buffer_pos_t;
 
     struct ring_buffer_r {
       volatile ring_buffer_pos_t head, tail;
@@ -191,13 +184,13 @@
                    rx_framing_errors;
     static ring_buffer_pos_t rx_max_enqueued;
 
-    static FORCE_INLINE ring_buffer_pos_t atomic_read_rx_head();
+    FORCE_INLINE static ring_buffer_pos_t atomic_read_rx_head();
 
     static volatile bool rx_tail_value_not_stable;
     static volatile uint16_t rx_tail_value_backup;
 
-    static FORCE_INLINE void atomic_set_rx_tail(ring_buffer_pos_t value);
-    static FORCE_INLINE ring_buffer_pos_t atomic_read_rx_tail();
+    FORCE_INLINE static void atomic_set_rx_tail(ring_buffer_pos_t value);
+    FORCE_INLINE static ring_buffer_pos_t atomic_read_rx_tail();
 
   public:
     FORCE_INLINE static void store_rxd_char();
@@ -217,7 +210,7 @@
     #endif
 
     enum { HasEmergencyParser = Cfg::EMERGENCYPARSER };
-    static inline bool emergency_parser_enabled() { return Cfg::EMERGENCYPARSER; }
+    static bool emergency_parser_enabled() { return Cfg::EMERGENCYPARSER; }
 
     FORCE_INLINE static uint8_t dropped() { return Cfg::DROPPED_RX ? rx_dropped_bytes : 0; }
     FORCE_INLINE static uint8_t buffer_overruns() { return Cfg::RX_OVERRUNS ? rx_buffer_overruns : 0; }
@@ -283,7 +276,7 @@
     static constexpr bool DROPPED_RX        = false;
     static constexpr bool RX_FRAMING_ERRORS = false;
     static constexpr bool MAX_RX_QUEUED     = false;
-    static constexpr bool RX_OVERRUNS       = BOTH(HAS_DGUS_LCD, SERIAL_STATS_RX_BUFFER_OVERRUNS);
+    static constexpr bool RX_OVERRUNS       = ALL(HAS_DGUS_LCD, SERIAL_STATS_RX_BUFFER_OVERRUNS);
   };
 
   typedef Serial1Class< MarlinSerial< LCDSerialCfg<LCD_SERIAL_PORT> > > MSerialLCD;

Marlin/src/HAL/AVR/Servo.cpp

@@ -63,30 +63,28 @@
 
 static volatile int8_t Channel[_Nbr_16timers];              // counter for the servo being pulsed for each timer (or -1 if refresh interval)
 
-
 /************ static functions common to all instances ***********************/
 
-static inline void handle_interrupts(timer16_Sequence_t timer, volatile uint16_t* TCNTn, volatile uint16_t* OCRnA) {
-  if (Channel[timer] < 0)
-    *TCNTn = 0; // channel set to -1 indicated that refresh interval completed so reset the timer
-  else {
-    if (SERVO_INDEX(timer, Channel[timer]) < ServoCount && SERVO(timer, Channel[timer]).Pin.isActive)
-      extDigitalWrite(SERVO(timer, Channel[timer]).Pin.nbr, LOW); // pulse this channel low if activated
-  }
+static inline void handle_interrupts(const timer16_Sequence_t timer, volatile uint16_t* TCNTn, volatile uint16_t* OCRnA) {
+  int8_t cho = Channel[timer];                                        // Handle the prior Channel[timer] first
+  if (cho < 0)                                                        // Channel -1 indicates the refresh interval completed...
+    *TCNTn = 0;                                                       // ...so reset the timer
+  else if (SERVO_INDEX(timer, cho) < ServoCount)                      // prior channel handled?
+    extDigitalWrite(SERVO(timer, cho).Pin.nbr, LOW);                  // pulse the prior channel LOW
 
-  Channel[timer]++;    // increment to the next channel
-  if (SERVO_INDEX(timer, Channel[timer]) < ServoCount && Channel[timer] < SERVOS_PER_TIMER) {
-    *OCRnA = *TCNTn + SERVO(timer, Channel[timer]).ticks;
-    if (SERVO(timer, Channel[timer]).Pin.isActive)    // check if activated
-      extDigitalWrite(SERVO(timer, Channel[timer]).Pin.nbr, HIGH); // it's an active channel so pulse it high
+  Channel[timer] = ++cho;                                             // Handle the next channel (or 0)
+  if (cho < SERVOS_PER_TIMER && SERVO_INDEX(timer, cho) < ServoCount) {
+    *OCRnA = *TCNTn + SERVO(timer, cho).ticks;                        // set compare to current ticks plus duration
+    if (SERVO(timer, cho).Pin.isActive)                               // activated?
+      extDigitalWrite(SERVO(timer, cho).Pin.nbr, HIGH);               // yes: pulse HIGH
   }
   else {
     // finished all channels so wait for the refresh period to expire before starting over
-    if (((unsigned)*TCNTn) + 4 < usToTicks(REFRESH_INTERVAL))    // allow a few ticks to ensure the next OCR1A not missed
-      *OCRnA = (unsigned int)usToTicks(REFRESH_INTERVAL);
-    else
-      *OCRnA = *TCNTn + 4;  // at least REFRESH_INTERVAL has elapsed
-    Channel[timer] = -1; // this will get incremented at the end of the refresh period to start again at the first channel
+    const unsigned int cval = ((unsigned)*TCNTn) + 32 / (SERVO_TIMER_PRESCALER), // allow 32 cycles to ensure the next OCR1A not missed
+                       ival = (unsigned int)usToTicks(REFRESH_INTERVAL); // at least REFRESH_INTERVAL has elapsed
+    *OCRnA = max(cval, ival);
+
+    Channel[timer] = -1;                                              // reset the timer counter to 0 on the next call
   }
 }
 
@@ -123,91 +121,102 @@ static inline void handle_interrupts(timer16_Sequence_t timer, volatile uint16_t
 
 /****************** end of static functions ******************************/
 
-void initISR(timer16_Sequence_t timer) {
-  #ifdef _useTimer1
-    if (timer == _timer1) {
-      TCCR1A = 0;             // normal counting mode
-      TCCR1B = _BV(CS11);     // set prescaler of 8
-      TCNT1 = 0;              // clear the timer count
-      #if defined(__AVR_ATmega8__) || defined(__AVR_ATmega128__)
-        SBI(TIFR, OCF1A);      // clear any pending interrupts;
-        SBI(TIMSK, OCIE1A);    // enable the output compare interrupt
-      #else
-        // here if not ATmega8 or ATmega128
-        SBI(TIFR1, OCF1A);     // clear any pending interrupts;
-        SBI(TIMSK1, OCIE1A);   // enable the output compare interrupt
-      #endif
-      #ifdef WIRING
-        timerAttach(TIMER1OUTCOMPAREA_INT, Timer1Service);
-      #endif
-    }
-  #endif
+void initISR(const timer16_Sequence_t timer_index) {
+  switch (timer_index) {
+    default: break;
 
-  #ifdef _useTimer3
-    if (timer == _timer3) {
-      TCCR3A = 0;             // normal counting mode
-      TCCR3B = _BV(CS31);     // set prescaler of 8
-      TCNT3 = 0;              // clear the timer count
-      #ifdef __AVR_ATmega128__
-        SBI(TIFR, OCF3A);     // clear any pending interrupts;
-        SBI(ETIMSK, OCIE3A);  // enable the output compare interrupt
-      #else
-        SBI(TIFR3, OCF3A);   // clear any pending interrupts;
-        SBI(TIMSK3, OCIE3A); // enable the output compare interrupt
-      #endif
-      #ifdef WIRING
-        timerAttach(TIMER3OUTCOMPAREA_INT, Timer3Service);  // for Wiring platform only
-      #endif
-    }
-  #endif
+    #ifdef _useTimer1
+      case _timer1:
+        TCCR1A = 0;             // normal counting mode
+        TCCR1B = _BV(CS11);     // set prescaler of 8
+        TCNT1 = 0;              // clear the timer count
+        #if defined(__AVR_ATmega8__) || defined(__AVR_ATmega128__)
+          SBI(TIFR, OCF1A);      // clear any pending interrupts;
+          SBI(TIMSK, OCIE1A);    // enable the output compare interrupt
+        #else
+          // here if not ATmega8 or ATmega128
+          SBI(TIFR1, OCF1A);     // clear any pending interrupts;
+          SBI(TIMSK1, OCIE1A);   // enable the output compare interrupt
+        #endif
+        #ifdef WIRING
+          timerAttach(TIMER1OUTCOMPAREA_INT, Timer1Service);
+        #endif
+        break;
+    #endif
 
-  #ifdef _useTimer4
-    if (timer == _timer4) {
-      TCCR4A = 0;             // normal counting mode
-      TCCR4B = _BV(CS41);     // set prescaler of 8
-      TCNT4 = 0;              // clear the timer count
-      TIFR4 = _BV(OCF4A);     // clear any pending interrupts;
-      TIMSK4 = _BV(OCIE4A);   // enable the output compare interrupt
-    }
-  #endif
+    #ifdef _useTimer3
+      case _timer3:
+        TCCR3A = 0;             // normal counting mode
+        TCCR3B = _BV(CS31);     // set prescaler of 8
+        TCNT3 = 0;              // clear the timer count
+        #ifdef __AVR_ATmega128__
+          SBI(TIFR, OCF3A);     // clear any pending interrupts;
+          SBI(ETIMSK, OCIE3A);  // enable the output compare interrupt
+        #else
+          SBI(TIFR3, OCF3A);   // clear any pending interrupts;
+          SBI(TIMSK3, OCIE3A); // enable the output compare interrupt
+        #endif
+        #ifdef WIRING
+          timerAttach(TIMER3OUTCOMPAREA_INT, Timer3Service);  // for Wiring platform only
+        #endif
+        break;
+    #endif
 
-  #ifdef _useTimer5
-    if (timer == _timer5) {
-      TCCR5A = 0;             // normal counting mode
-      TCCR5B = _BV(CS51);     // set prescaler of 8
-      TCNT5 = 0;              // clear the timer count
-      TIFR5 = _BV(OCF5A);     // clear any pending interrupts;
-      TIMSK5 = _BV(OCIE5A);   // enable the output compare interrupt
-    }
-  #endif
+    #ifdef _useTimer4
+      case _timer4:
+        TCCR4A = 0;             // normal counting mode
+        TCCR4B = _BV(CS41);     // set prescaler of 8
+        TCNT4 = 0;              // clear the timer count
+        TIFR4 = _BV(OCF4A);     // clear any pending interrupts;
+        TIMSK4 = _BV(OCIE4A);   // enable the output compare interrupt
+        break;
+    #endif
+
+    #ifdef _useTimer5
+      case _timer5:
+        TCCR5A = 0;             // normal counting mode
+        TCCR5B = _BV(CS51);     // set prescaler of 8
+        TCNT5 = 0;              // clear the timer count
+        TIFR5 = _BV(OCF5A);     // clear any pending interrupts;
+        TIMSK5 = _BV(OCIE5A);   // enable the output compare interrupt
+        break;
+    #endif
+  }
 }
 
-void finISR(timer16_Sequence_t timer) {
+void finISR(const timer16_Sequence_t timer_index) {
   // Disable use of the given timer
   #ifdef WIRING
-    if (timer == _timer1) {
-      CBI(
-        #if defined(__AVR_ATmega1281__) || defined(__AVR_ATmega2561__)
-          TIMSK1
-        #else
-          TIMSK
-        #endif
-          , OCIE1A);    // disable timer 1 output compare interrupt
-      timerDetach(TIMER1OUTCOMPAREA_INT);
-    }
-    else if (timer == _timer3) {
-      CBI(
-        #if defined(__AVR_ATmega1281__) || defined(__AVR_ATmega2561__)
-          TIMSK3
-        #else
-          ETIMSK
-        #endif
-          , OCIE3A);    // disable the timer3 output compare A interrupt
-      timerDetach(TIMER3OUTCOMPAREA_INT);
+    switch (timer_index) {
+      default: break;
+
+      case _timer1:
+        CBI(
+          #if defined(__AVR_ATmega1281__) || defined(__AVR_ATmega2561__)
+            TIMSK1
+          #else
+            TIMSK
+          #endif
+          , OCIE1A    // disable timer 1 output compare interrupt
+        );
+        timerDetach(TIMER1OUTCOMPAREA_INT);
+        break;
+
+      case _timer3:
+        CBI(
+          #if defined(__AVR_ATmega1281__) || defined(__AVR_ATmega2561__)
+            TIMSK3
+          #else
+            ETIMSK
+          #endif
+          , OCIE3A    // disable the timer3 output compare A interrupt
+        );
+        timerDetach(TIMER3OUTCOMPAREA_INT);
+        break;
     }
   #else // !WIRING
     // For arduino - in future: call here to a currently undefined function to reset the timer
-    UNUSED(timer);
+    UNUSED(timer_index);
   #endif
 }
 

Marlin/src/HAL/AVR/eeprom.cpp

@@ -23,7 +23,7 @@
 
 #include "../../inc/MarlinConfig.h"
 
-#if EITHER(EEPROM_SETTINGS, SD_FIRMWARE_UPDATE)
+#if ANY(EEPROM_SETTINGS, SD_FIRMWARE_UPDATE)
 
 /**
  * PersistentStore for Arduino-style EEPROM interface

Marlin/src/HAL/AVR/endstop_interrupts.h

@@ -91,7 +91,6 @@ void endstop_ISR() { endstops.update(); }
 
 #endif
 
-
 // Install Pin change interrupt for a pin. Can be called multiple times.
 void pciSetup(const int8_t pin) {
   if (digitalPinHasPCICR(pin)) {
@@ -120,7 +119,7 @@ void pciSetup(const int8_t pin) {
 
 void setup_endstop_interrupts() {
   #define _ATTACH(P) attachInterrupt(digitalPinToInterrupt(P), endstop_ISR, CHANGE)
-  #if HAS_X_MAX
+  #if USE_X_MAX
     #if (digitalPinToInterrupt(X_MAX_PIN) != NOT_AN_INTERRUPT)
       _ATTACH(X_MAX_PIN);
     #else
@@ -128,7 +127,7 @@ void setup_endstop_interrupts() {
       pciSetup(X_MAX_PIN);
     #endif
   #endif
-  #if HAS_X_MIN
+  #if USE_X_MIN
     #if (digitalPinToInterrupt(X_MIN_PIN) != NOT_AN_INTERRUPT)
       _ATTACH(X_MIN_PIN);
     #else
@@ -136,7 +135,7 @@ void setup_endstop_interrupts() {
       pciSetup(X_MIN_PIN);
     #endif
   #endif
-  #if HAS_Y_MAX
+  #if USE_Y_MAX
     #if (digitalPinToInterrupt(Y_MAX_PIN) != NOT_AN_INTERRUPT)
       _ATTACH(Y_MAX_PIN);
     #else
@@ -144,7 +143,7 @@ void setup_endstop_interrupts() {
       pciSetup(Y_MAX_PIN);
     #endif
   #endif
-  #if HAS_Y_MIN
+  #if USE_Y_MIN
     #if (digitalPinToInterrupt(Y_MIN_PIN) != NOT_AN_INTERRUPT)
       _ATTACH(Y_MIN_PIN);
     #else
@@ -152,7 +151,7 @@ void setup_endstop_interrupts() {
       pciSetup(Y_MIN_PIN);
     #endif
   #endif
-  #if HAS_Z_MAX
+  #if USE_Z_MAX
     #if (digitalPinToInterrupt(Z_MAX_PIN) != NOT_AN_INTERRUPT)
       _ATTACH(Z_MAX_PIN);
     #else
@@ -160,7 +159,7 @@ void setup_endstop_interrupts() {
       pciSetup(Z_MAX_PIN);
     #endif
   #endif
-  #if HAS_Z_MIN
+  #if USE_Z_MIN
     #if (digitalPinToInterrupt(Z_MIN_PIN) != NOT_AN_INTERRUPT)
       _ATTACH(Z_MIN_PIN);
     #else
@@ -168,52 +167,97 @@ void setup_endstop_interrupts() {
       pciSetup(Z_MIN_PIN);
     #endif
   #endif
-  #if HAS_I_MAX
+  #if USE_I_MAX
     #if (digitalPinToInterrupt(I_MAX_PIN) != NOT_AN_INTERRUPT)
       _ATTACH(I_MAX_PIN);
     #else
-      static_assert(digitalPinHasPCICR(I_MAX_PIN), "I_MAX_PIN is not interrupt-capable");
+      static_assert(digitalPinHasPCICR(I_MAX_PIN), "I_MAX_PIN is not interrupt-capable. Disable ENDSTOP_INTERRUPTS_FEATURE to continue.");
       pciSetup(I_MAX_PIN);
     #endif
-  #elif HAS_I_MIN
+  #elif USE_I_MIN
     #if (digitalPinToInterrupt(I_MIN_PIN) != NOT_AN_INTERRUPT)
       _ATTACH(I_MIN_PIN);
     #else
-      static_assert(digitalPinHasPCICR(I_MIN_PIN), "I_MIN_PIN is not interrupt-capable");
+      static_assert(digitalPinHasPCICR(I_MIN_PIN), "I_MIN_PIN is not interrupt-capable. Disable ENDSTOP_INTERRUPTS_FEATURE to continue.");
       pciSetup(I_MIN_PIN);
     #endif
   #endif
-  #if HAS_J_MAX
+  #if USE_J_MAX
     #if (digitalPinToInterrupt(J_MAX_PIN) != NOT_AN_INTERRUPT)
       _ATTACH(J_MAX_PIN);
     #else
-      static_assert(digitalPinHasPCICR(J_MAX_PIN), "J_MAX_PIN is not interrupt-capable");
+      static_assert(digitalPinHasPCICR(J_MAX_PIN), "J_MAX_PIN is not interrupt-capable. Disable ENDSTOP_INTERRUPTS_FEATURE to continue.");
       pciSetup(J_MAX_PIN);
     #endif
-  #elif HAS_J_MIN
+  #elif USE_J_MIN
     #if (digitalPinToInterrupt(J_MIN_PIN) != NOT_AN_INTERRUPT)
       _ATTACH(J_MIN_PIN);
     #else
-      static_assert(digitalPinHasPCICR(J_MIN_PIN), "J_MIN_PIN is not interrupt-capable");
+      static_assert(digitalPinHasPCICR(J_MIN_PIN), "J_MIN_PIN is not interrupt-capable. Disable ENDSTOP_INTERRUPTS_FEATURE to continue.");
       pciSetup(J_MIN_PIN);
     #endif
   #endif
-  #if HAS_K_MAX
+  #if USE_K_MAX
     #if (digitalPinToInterrupt(K_MAX_PIN) != NOT_AN_INTERRUPT)
       _ATTACH(K_MAX_PIN);
     #else
-      static_assert(digitalPinHasPCICR(K_MAX_PIN), "K_MAX_PIN is not interrupt-capable");
+      static_assert(digitalPinHasPCICR(K_MAX_PIN), "K_MAX_PIN is not interrupt-capable. Disable ENDSTOP_INTERRUPTS_FEATURE to continue.");
       pciSetup(K_MAX_PIN);
     #endif
-  #elif HAS_K_MIN
+  #elif USE_K_MIN
     #if (digitalPinToInterrupt(K_MIN_PIN) != NOT_AN_INTERRUPT)
       _ATTACH(K_MIN_PIN);
     #else
-      static_assert(digitalPinHasPCICR(K_MIN_PIN), "K_MIN_PIN is not interrupt-capable");
+      static_assert(digitalPinHasPCICR(K_MIN_PIN), "K_MIN_PIN is not interrupt-capable. Disable ENDSTOP_INTERRUPTS_FEATURE to continue.");
       pciSetup(K_MIN_PIN);
     #endif
   #endif
-  #if HAS_X2_MAX
+  #if USE_U_MAX
+    #if (digitalPinToInterrupt(U_MAX_PIN) != NOT_AN_INTERRUPT)
+      _ATTACH(U_MAX_PIN);
+    #else
+      static_assert(digitalPinHasPCICR(U_MAX_PIN), "U_MAX_PIN is not interrupt-capable. Disable ENDSTOP_INTERRUPTS_FEATURE to continue.");
+      pciSetup(U_MAX_PIN);
+    #endif
+  #elif USE_U_MIN
+    #if (digitalPinToInterrupt(U_MIN_PIN) != NOT_AN_INTERRUPT)
+      _ATTACH(U_MIN_PIN);
+    #else
+      static_assert(digitalPinHasPCICR(U_MIN_PIN), "U_MIN_PIN is not interrupt-capable. Disable ENDSTOP_INTERRUPTS_FEATURE to continue.");
+      pciSetup(U_MIN_PIN);
+    #endif
+  #endif
+  #if USE_V_MAX
+    #if (digitalPinToInterrupt(V_MAX_PIN) != NOT_AN_INTERRUPT)
+      _ATTACH(V_MAX_PIN);
+    #else
+      static_assert(digitalPinHasPCICR(V_MAX_PIN), "V_MAX_PIN is not interrupt-capable. Disable ENDSTOP_INTERRUPTS_FEATURE to continue.");
+      pciSetup(V_MAX_PIN);
+    #endif
+  #elif USE_V_MIN
+    #if (digitalPinToInterrupt(V_MIN_PIN) != NOT_AN_INTERRUPT)
+      _ATTACH(V_MIN_PIN);
+    #else
+      static_assert(digitalPinHasPCICR(V_MIN_PIN), "V_MIN_PIN is not interrupt-capable. Disable ENDSTOP_INTERRUPTS_FEATURE to continue.");
+      pciSetup(V_MIN_PIN);
+    #endif
+  #endif
+  #if USE_W_MAX
+    #if (digitalPinToInterrupt(W_MAX_PIN) != NOT_AN_INTERRUPT)
+      _ATTACH(W_MAX_PIN);
+    #else
+      static_assert(digitalPinHasPCICR(W_MAX_PIN), "W_MAX_PIN is not interrupt-capable. Disable ENDSTOP_INTERRUPTS_FEATURE to continue.");
+      pciSetup(W_MAX_PIN);
+    #endif
+  #elif USE_W_MIN
+    #if (digitalPinToInterrupt(W_MIN_PIN) != NOT_AN_INTERRUPT)
+      _ATTACH(W_MIN_PIN);
+    #else
+      static_assert(digitalPinHasPCICR(W_MIN_PIN), "W_MIN_PIN is not interrupt-capable. Disable ENDSTOP_INTERRUPTS_FEATURE to continue.");
+      pciSetup(W_MIN_PIN);
+    #endif
+  #endif
+  #if USE_X2_MAX
     #if (digitalPinToInterrupt(X2_MAX_PIN) != NOT_AN_INTERRUPT)
       _ATTACH(X2_MAX_PIN);
     #else
@@ -221,7 +265,7 @@ void setup_endstop_interrupts() {
       pciSetup(X2_MAX_PIN);
     #endif
   #endif
-  #if HAS_X2_MIN
+  #if USE_X2_MIN
     #if (digitalPinToInterrupt(X2_MIN_PIN) != NOT_AN_INTERRUPT)
       _ATTACH(X2_MIN_PIN);
     #else
@@ -229,7 +273,7 @@ void setup_endstop_interrupts() {
       pciSetup(X2_MIN_PIN);
     #endif
   #endif
-  #if HAS_Y2_MAX
+  #if USE_Y2_MAX
     #if (digitalPinToInterrupt(Y2_MAX_PIN) != NOT_AN_INTERRUPT)
       _ATTACH(Y2_MAX_PIN);
     #else
@@ -237,7 +281,7 @@ void setup_endstop_interrupts() {
       pciSetup(Y2_MAX_PIN);
     #endif
   #endif
-  #if HAS_Y2_MIN
+  #if USE_Y2_MIN
     #if (digitalPinToInterrupt(Y2_MIN_PIN) != NOT_AN_INTERRUPT)
       _ATTACH(Y2_MIN_PIN);
     #else
@@ -245,7 +289,7 @@ void setup_endstop_interrupts() {
       pciSetup(Y2_MIN_PIN);
     #endif
   #endif
-  #if HAS_Z2_MAX
+  #if USE_Z2_MAX
     #if (digitalPinToInterrupt(Z2_MAX_PIN) != NOT_AN_INTERRUPT)
       _ATTACH(Z2_MAX_PIN);
     #else
@@ -253,7 +297,7 @@ void setup_endstop_interrupts() {
       pciSetup(Z2_MAX_PIN);
     #endif
   #endif
-  #if HAS_Z2_MIN
+  #if USE_Z2_MIN
     #if (digitalPinToInterrupt(Z2_MIN_PIN) != NOT_AN_INTERRUPT)
       _ATTACH(Z2_MIN_PIN);
     #else
@@ -261,7 +305,7 @@ void setup_endstop_interrupts() {
       pciSetup(Z2_MIN_PIN);
     #endif
   #endif
-  #if HAS_Z3_MAX
+  #if USE_Z3_MAX
     #if (digitalPinToInterrupt(Z3_MAX_PIN) != NOT_AN_INTERRUPT)
       _ATTACH(Z3_MAX_PIN);
     #else
@@ -269,7 +313,7 @@ void setup_endstop_interrupts() {
       pciSetup(Z3_MAX_PIN);
     #endif
   #endif
-  #if HAS_Z3_MIN
+  #if USE_Z3_MIN
     #if (digitalPinToInterrupt(Z3_MIN_PIN) != NOT_AN_INTERRUPT)
       _ATTACH(Z3_MIN_PIN);
     #else
@@ -277,7 +321,7 @@ void setup_endstop_interrupts() {
       pciSetup(Z3_MIN_PIN);
     #endif
   #endif
-  #if HAS_Z4_MAX
+  #if USE_Z4_MAX
     #if (digitalPinToInterrupt(Z4_MAX_PIN) != NOT_AN_INTERRUPT)
       _ATTACH(Z4_MAX_PIN);
     #else
@@ -285,7 +329,7 @@ void setup_endstop_interrupts() {
       pciSetup(Z4_MAX_PIN);
     #endif
   #endif
-  #if HAS_Z4_MIN
+  #if USE_Z4_MIN
     #if (digitalPinToInterrupt(Z4_MIN_PIN) != NOT_AN_INTERRUPT)
       _ATTACH(Z4_MIN_PIN);
     #else
@@ -301,5 +345,6 @@ void setup_endstop_interrupts() {
       pciSetup(Z_MIN_PROBE_PIN);
     #endif
   #endif
+
   // If we arrive here without raising an assertion, each pin has either an EXT-interrupt or a PCI.
 }

Marlin/src/HAL/AVR/fast_pwm.cpp

@@ -21,10 +21,11 @@
  */
 #ifdef __AVR__
 
-#include "../../inc/MarlinConfigPre.h"
-#include "HAL.h"
+#include "../../inc/MarlinConfig.h"
 
-#if NEEDS_HARDWARE_PWM // Specific meta-flag for features that mandate PWM
+//#define DEBUG_AVR_FAST_PWM
+#define DEBUG_OUT ENABLED(DEBUG_AVR_FAST_PWM)
+#include "../../core/debug_out.h"
 
 struct Timer {
   volatile uint8_t* TCCRnQ[3];  // max 3 TCCR registers per timer
@@ -32,229 +33,207 @@ struct Timer {
   volatile uint16_t* ICRn;      // max 1 ICR register per timer
   uint8_t n;                    // the timer number [0->5]
   uint8_t q;                    // the timer output [0->2] (A->C)
+  bool isPWM;                   // True if pin is a "hardware timer"
+  bool isProtected;             // True if timer is protected
 };
 
+// Macros for the Timer structure
+#define _SET_WGMnQ(T, V) do{ \
+    *(T.TCCRnQ)[0] = (*(T.TCCRnQ)[0] & ~(0x3 << 0)) | (( int(V)       & 0x3) << 0); \
+    *(T.TCCRnQ)[1] = (*(T.TCCRnQ)[1] & ~(0x3 << 3)) | (((int(V) >> 2) & 0x3) << 3); \
+  }while(0)
+
+// Set TCCR CS bits
+#define _SET_CSn(T, V) (*(T.TCCRnQ)[1] = (*(T.TCCRnQ[1]) & ~(0x7 << 0)) | ((int(V) & 0x7) << 0))
+
+// Set TCCR COM bits
+#define _SET_COMnQ(T, Q, V) (*(T.TCCRnQ)[0] = (*(T.TCCRnQ)[0] & ~(0x3 << (6-2*(Q)))) | (int(V) << (6-2*(Q))))
+
+// Set OCRnQ register
+#define _SET_OCRnQ(T, Q, V) (*(T.OCRnQ)[Q] = int(V) & 0xFFFF)
+
+// Set ICRn register (one per timer)
+#define _SET_ICRn(T, V) (*(T.ICRn) = int(V) & 0xFFFF)
+
 /**
- * get_pwm_timer
- *  Get the timer information and register of the provided pin.
- *  Return a Timer struct containing this information.
- *  Used by set_pwm_frequency, set_pwm_duty
+ * Return a Timer struct describing a pin's timer.
  */
-Timer get_pwm_timer(const pin_t pin) {
+const Timer get_pwm_timer(const pin_t pin) {
+
   uint8_t q = 0;
+
   switch (digitalPinToTimer(pin)) {
-    // Protect reserved timers (TIMER0 & TIMER1)
     #ifdef TCCR0A
-      #if !AVR_AT90USB1286_FAMILY
-        case TIMER0A:
-      #endif
-      case TIMER0B:
+      IF_DISABLED(AVR_AT90USB1286_FAMILY, case TIMER0A:)
     #endif
     #ifdef TCCR1A
       case TIMER1A: case TIMER1B:
     #endif
-                                        break;
-    #if HAS_TCCR2 || defined(TCCR2A)
-      #if HAS_TCCR2
-        case TIMER2: {
-          Timer timer = {
-            /*TCCRnQ*/  { &TCCR2, nullptr, nullptr },
-            /*OCRnQ*/   { (uint16_t*)&OCR2, nullptr, nullptr },
-            /*ICRn*/      nullptr,
-            /*n, q*/      2, 0
-          };
-        }
-      #elif defined(TCCR2A)
-        #if ENABLED(USE_OCR2A_AS_TOP)
-          case TIMER2A:   break; // protect TIMER2A
-          case TIMER2B: {
-            Timer timer = {
-              /*TCCRnQ*/  { &TCCR2A,  &TCCR2B,  nullptr },
-              /*OCRnQ*/   { (uint16_t*)&OCR2A, (uint16_t*)&OCR2B, nullptr },
-              /*ICRn*/      nullptr,
-              /*n, q*/      2, 1
-            };
-            return timer;
-          }
-        #else
-          case TIMER2B:   ++q;
-          case TIMER2A: {
-            Timer timer = {
-              /*TCCRnQ*/  { &TCCR2A,  &TCCR2B,  nullptr },
-              /*OCRnQ*/   { (uint16_t*)&OCR2A, (uint16_t*)&OCR2B, nullptr },
-              /*ICRn*/      nullptr,
-                            2, q
-            };
-            return timer;
-          }
-        #endif
-      #endif
+
+    break;    // Protect reserved timers (TIMER0 & TIMER1)
+
+    #ifdef TCCR0A
+      case TIMER0B:   // Protected timer, but allow setting the duty cycle on OCR0B for pin D4 only
+        return Timer({ { &TCCR0A, nullptr, nullptr }, { (uint16_t*)&OCR0A, (uint16_t*)&OCR0B, nullptr }, nullptr, 0, 1, true, true });
     #endif
+
+    #if HAS_TCCR2
+      case TIMER2:
+        return Timer({ { &TCCR2, nullptr, nullptr }, { (uint16_t*)&OCR2, nullptr, nullptr }, nullptr, 2, 0, true, false });
+    #elif ENABLED(USE_OCR2A_AS_TOP)
+      case TIMER2A: break; // Protect TIMER2A since its OCR is used by TIMER2B
+      case TIMER2B:
+        return Timer({ { &TCCR2A, &TCCR2B, nullptr }, { (uint16_t*)&OCR2A, (uint16_t*)&OCR2B, nullptr }, nullptr, 2, 1, true, false });
+    #elif defined(TCCR2A)
+      case TIMER2B: ++q; case TIMER2A:
+        return Timer({ { &TCCR2A, &TCCR2B, nullptr }, { (uint16_t*)&OCR2A, (uint16_t*)&OCR2B, nullptr }, nullptr, 2, q, true, false });
+    #endif
+
     #ifdef OCR3C
-      case TIMER3C:   ++q;
-      case TIMER3B:   ++q;
-      case TIMER3A: {
-        Timer timer = {
-          /*TCCRnQ*/  { &TCCR3A,  &TCCR3B,  &TCCR3C },
-          /*OCRnQ*/   { &OCR3A,   &OCR3B,   &OCR3C },
-          /*ICRn*/      &ICR3,
-          /*n, q*/      3, q
-        };
-        return timer;
-      }
+      case TIMER3C: ++q; case TIMER3B: ++q; case TIMER3A:
+        return Timer({ { &TCCR3A, &TCCR3B, &TCCR3C }, { &OCR3A, &OCR3B, &OCR3C  }, &ICR3, 3, q, true, false });
     #elif defined(OCR3B)
-      case TIMER3B:   ++q;
-      case TIMER3A: {
-        Timer timer = {
-          /*TCCRnQ*/  { &TCCR3A,  &TCCR3B,  nullptr },
-          /*OCRnQ*/   { &OCR3A,   &OCR3B,  nullptr },
-          /*ICRn*/      &ICR3,
-          /*n, q*/      3, q
-        };
-        return timer;
-      }
+      case TIMER3B: ++q; case TIMER3A:
+        return Timer({ { &TCCR3A, &TCCR3B, nullptr }, { &OCR3A, &OCR3B, nullptr }, &ICR3, 3, q, true, false });
     #endif
+
     #ifdef TCCR4A
-      case TIMER4C:   ++q;
-      case TIMER4B:   ++q;
-      case TIMER4A: {
-        Timer timer = {
-          /*TCCRnQ*/  { &TCCR4A,  &TCCR4B,  &TCCR4C },
-          /*OCRnQ*/   { &OCR4A,   &OCR4B,   &OCR4C },
-          /*ICRn*/      &ICR4,
-          /*n, q*/      4, q
-        };
-        return timer;
-      }
+      case TIMER4C: ++q; case TIMER4B: ++q; case TIMER4A:
+        return Timer({ { &TCCR4A, &TCCR4B, &TCCR4C }, { &OCR4A, &OCR4B, &OCR4C }, &ICR4, 4, q, true, false });
     #endif
+
     #ifdef TCCR5A
-      case TIMER5C:   ++q;
-      case TIMER5B:   ++q;
-      case TIMER5A: {
-        Timer timer = {
-          /*TCCRnQ*/  { &TCCR5A,  &TCCR5B,  &TCCR5C },
-          /*OCRnQ*/   { &OCR5A,   &OCR5B,   &OCR5C },
-          /*ICRn*/      &ICR5,
-          /*n, q*/      5, q
-        };
-        return timer;
-      }
+      case TIMER5C: ++q; case TIMER5B: ++q; case TIMER5A:
+        return Timer({ { &TCCR5A, &TCCR5B, &TCCR5C }, { &OCR5A, &OCR5B, &OCR5C }, &ICR5, 5, q, true, false });
     #endif
   }
-  Timer timer = {
-      /*TCCRnQ*/  { nullptr, nullptr, nullptr },
-      /*OCRnQ*/   { nullptr, nullptr, nullptr },
-      /*ICRn*/      nullptr,
-                    0, 0
-  };
-  return timer;
+
+  return Timer();
 }
 
-void set_pwm_frequency(const pin_t pin, int f_desired) {
-  Timer timer = get_pwm_timer(pin);
-  if (timer.n == 0) return; // Don't proceed if protected timer or not recognized
-  uint16_t size;
-  if (timer.n == 2) size = 255; else size = 65535;
+void MarlinHAL::set_pwm_frequency(const pin_t pin, const uint16_t f_desired) {
+  DEBUG_ECHOLNPGM("set_pwm_frequency(pin=", pin, ", freq=", f_desired, ")");
+  const Timer timer = get_pwm_timer(pin);
+  if (timer.isProtected || !timer.isPWM) return; // Don't proceed if protected timer or not recognized
 
-  uint16_t res = 255;   // resolution (TOP value)
-  uint8_t j = 0;        // prescaler index
-  uint8_t wgm = 1;      // waveform generation mode
+  const bool is_timer2 = timer.n == 2;
+  const uint16_t maxtop = is_timer2 ? 0xFF : 0xFFFF;
+
+  DEBUG_ECHOLNPGM("maxtop=", maxtop);
+
+  uint16_t res = 0xFF;        // resolution (TOP value)
+  uint8_t j = CS_NONE;        // prescaler index
+  uint8_t wgm = WGM_PWM_PC_8; // waveform generation mode
 
   // Calculating the prescaler and resolution to use to achieve closest frequency
   if (f_desired != 0) {
-    int f = (F_CPU) / (2 * 1024 * size) + 1; // Initialize frequency as lowest (non-zero) achievable
-    uint16_t prescaler[] = { 0, 1, 8, /*TIMER2 ONLY*/32, 64, /*TIMER2 ONLY*/128, 256, 1024 };
+    constexpr uint16_t prescaler[] = { 1, 8, (32), 64, (128), 256, 1024 };  // (*) are Timer 2 only
+    uint16_t f = (F_CPU) / (uint32_t(maxtop) << 11) + 1;      // Start with the lowest non-zero frequency achievable (for 16MHz, 1 or 31)
 
-    // loop over prescaler values
-    LOOP_S_L_N(i, 1, 8) {
-      uint16_t res_temp_fast = 255, res_temp_phase_correct = 255;
-      if (timer.n == 2) {
-        // No resolution calculation for TIMER2 unless enabled USE_OCR2A_AS_TOP
-        #if ENABLED(USE_OCR2A_AS_TOP)
-          const uint16_t rtf = (F_CPU) / (prescaler[i] * f_desired);
-          res_temp_fast = rtf - 1;
-          res_temp_phase_correct = rtf / 2;
+    DEBUG_ECHOLNPGM("f=", f);
+    DEBUG_ECHOLNPGM("(prescaler loop)");
+    for (uint8_t i = 0; i < COUNT(prescaler); ++i) {          // Loop through all prescaler values
+      const uint32_t p = prescaler[i];                        // Extend to 32 bits for calculations
+      DEBUG_ECHOLNPGM("prescaler[", i, "]=", p);
+      uint16_t res_fast_temp, res_pc_temp;
+      if (is_timer2) {
+        #if ENABLED(USE_OCR2A_AS_TOP)                         // No resolution calculation for TIMER2 unless enabled USE_OCR2A_AS_TOP
+          const uint16_t rft = (F_CPU) / (p * f_desired);
+          res_fast_temp = rft - 1;
+          res_pc_temp = rft / 2;
+          DEBUG_ECHOLNPGM("(Timer2) res_fast_temp=", res_fast_temp, " res_pc_temp=", res_pc_temp);
+        #else
+          res_fast_temp = res_pc_temp = maxtop;
+          DEBUG_ECHOLNPGM("(Timer2) res_fast_temp=", maxtop, " res_pc_temp=", maxtop);
         #endif
       }
       else {
-        // Skip TIMER2 specific prescalers when not TIMER2
-        if (i == 3 || i == 5) continue;
-        const uint16_t rtf = (F_CPU) / (prescaler[i] * f_desired);
-        res_temp_fast = rtf - 1;
-        res_temp_phase_correct = rtf / 2;
+        if (p == 32 || p == 128) continue;                    // Skip TIMER2 specific prescalers when not TIMER2
+        const uint16_t rft = (F_CPU) / (p * f_desired);
+        DEBUG_ECHOLNPGM("(Not Timer 2) F_CPU=", STRINGIFY(F_CPU), " prescaler=", p, " f_desired=", f_desired);
+        res_fast_temp = rft - 1;
+        res_pc_temp = rft / 2;
       }
 
-      LIMIT(res_temp_fast, 1U, size);
-      LIMIT(res_temp_phase_correct, 1U, size);
+      LIMIT(res_fast_temp, 1U, maxtop);
+      LIMIT(res_pc_temp, 1U, maxtop);
+
       // Calculate frequencies of test prescaler and resolution values
-      const int f_temp_fast = (F_CPU) / (prescaler[i] * (1 + res_temp_fast)),
-                f_temp_phase_correct = (F_CPU) / (2 * prescaler[i] * res_temp_phase_correct),
-                f_diff = ABS(f - f_desired),
-                f_fast_diff = ABS(f_temp_fast - f_desired),
-                f_phase_diff = ABS(f_temp_phase_correct - f_desired);
+      const uint16_t f_fast_temp = (F_CPU) / (p * (1 + res_fast_temp)),
+                     f_pc_temp   = (F_CPU) / ((p * res_pc_temp) << 1),
+                     f_diff      = _MAX(f, f_desired) - _MIN(f, f_desired),
+                     f_fast_diff = _MAX(f_fast_temp, f_desired) - _MIN(f_fast_temp, f_desired),
+                     f_pc_diff   = _MAX(f_pc_temp, f_desired) - _MIN(f_pc_temp, f_desired);
 
-      // If FAST values are closest to desired f
-      if (f_fast_diff < f_diff && f_fast_diff <= f_phase_diff) {
-        // Remember this combination
-        f = f_temp_fast;
-        res = res_temp_fast;
-        j = i;
+      DEBUG_ECHOLNPGM("f_fast_temp=", f_fast_temp, " f_pc_temp=", f_pc_temp, " f_diff=", f_diff, " f_fast_diff=", f_fast_diff, " f_pc_diff=", f_pc_diff);
+
+      if (f_fast_diff < f_diff && f_fast_diff <= f_pc_diff) { // FAST values are closest to desired f
         // Set the Wave Generation Mode to FAST PWM
-        if (timer.n == 2)
-          wgm = TERN(USE_OCR2A_AS_TOP, WGM2_FAST_PWM_OCR2A, WGM2_FAST_PWM);
-        else
-          wgm = WGM_FAST_PWM_ICRn;
+        wgm = is_timer2 ? uint8_t(TERN(USE_OCR2A_AS_TOP, WGM2_FAST_PWM_OCR2A, WGM2_FAST_PWM)) : uint8_t(WGM_FAST_PWM_ICRn);
+        // Remember this combination
+        f = f_fast_temp; res = res_fast_temp; j = i + 1;
+        DEBUG_ECHOLNPGM("(FAST) updated f=", f);
       }
-      // If PHASE CORRECT values are closes to desired f
-      else if (f_phase_diff < f_diff) {
-        f = f_temp_phase_correct;
-        res = res_temp_phase_correct;
-        j = i;
+      else if (f_pc_diff < f_diff) {                          // PHASE CORRECT values are closes to desired f
         // Set the Wave Generation Mode to PWM PHASE CORRECT
-        if (timer.n == 2)
-          wgm = TERN(USE_OCR2A_AS_TOP, WGM2_PWM_PC_OCR2A, WGM2_FAST_PWM);
-        else
-          wgm = WGM_PWM_PC_ICRn;
+        wgm = is_timer2 ? uint8_t(TERN(USE_OCR2A_AS_TOP, WGM2_PWM_PC_OCR2A, WGM2_PWM_PC)) : uint8_t(WGM_PWM_PC_ICRn);
+        f = f_pc_temp; res = res_pc_temp; j = i + 1;
+        DEBUG_ECHOLNPGM("(PHASE) updated f=", f);
       }
-    }
+    } // prescaler loop
   }
-  _SET_WGMnQ(timer.TCCRnQ, wgm);
-  _SET_CSn(timer.TCCRnQ, j);
 
-  if (timer.n == 2) {
-    TERN_(USE_OCR2A_AS_TOP, _SET_OCRnQ(timer.OCRnQ, 0, res));  // Set OCR2A value (TOP) = res
+  _SET_WGMnQ(timer, wgm);
+  _SET_CSn(timer, j);
+
+  if (is_timer2) {
+    TERN_(USE_OCR2A_AS_TOP, _SET_OCRnQ(timer, 0, res)); // Set OCR2A value (TOP) = res
   }
   else
-    _SET_ICRn(timer.ICRn, res);         // Set ICRn value (TOP) = res
+    _SET_ICRn(timer, res);                              // Set ICRn value (TOP) = res
 }
 
-#endif // NEEDS_HARDWARE_PWM
-
-void set_pwm_duty(const pin_t pin, const uint16_t v, const uint16_t v_size/*=255*/, const bool invert/*=false*/) {
-  #if NEEDS_HARDWARE_PWM
-
-    // If v is 0 or v_size (max), digitalWrite to LOW or HIGH.
-    // Note that digitalWrite also disables pwm output for us (sets COM bit to 0)
-    if (v == 0)
-      digitalWrite(pin, invert);
-    else if (v == v_size)
-      digitalWrite(pin, !invert);
-    else {
-      Timer timer = get_pwm_timer(pin);
-      if (timer.n == 0) return; // Don't proceed if protected timer or not recognized
-      // Set compare output mode to CLEAR -> SET or SET -> CLEAR (if inverted)
-      _SET_COMnQ(timer.TCCRnQ, timer.q TERN_(HAS_TCCR2, + (timer.q == 2)), COM_CLEAR_SET + invert); // COM20 is on bit 4 of TCCR2, so +1 for q==2
-      const uint16_t top = timer.n == 2 ? TERN(USE_OCR2A_AS_TOP, *timer.OCRnQ[0], 255) : *timer.ICRn;
-      _SET_OCRnQ(timer.OCRnQ, timer.q, uint16_t(uint32_t(v) * top / v_size)); // Scale 8/16-bit v to top value
+void MarlinHAL::set_pwm_duty(const pin_t pin, const uint16_t v, const uint16_t v_size/*=255*/, const bool invert/*=false*/) {
+  // If v is 0 or v_size (max), digitalWrite to LOW or HIGH.
+  // Note that digitalWrite also disables PWM output for us (sets COM bit to 0)
+  if (v == 0)
+    digitalWrite(pin, invert);
+  else if (v == v_size)
+    digitalWrite(pin, !invert);
+  else {
+    const Timer timer = get_pwm_timer(pin);
+    if (timer.isPWM) {
+      if (timer.n == 0) {
+        _SET_COMnQ(timer, timer.q, COM_CLEAR_SET);  // Only allow a TIMER0B select...
+        _SET_OCRnQ(timer, timer.q, v);              // ...and OCR0B duty update. For output pin D4 no frequency changes are permitted.
+      }
+      else if (!timer.isProtected) {
+        const uint16_t top = timer.n == 2 ? TERN(USE_OCR2A_AS_TOP, *timer.OCRnQ[0], 255) : *timer.ICRn;
+        _SET_COMnQ(timer, SUM_TERN(HAS_TCCR2, timer.q, timer.q == 2), COM_CLEAR_SET + invert);   // COM20 is on bit 4 of TCCR2, so +1 for q==2
+        _SET_OCRnQ(timer, timer.q, uint16_t(uint32_t(v) * top / v_size)); // Scale 8/16-bit v to top value
+      }
     }
+    else
+      digitalWrite(pin, v < v_size / 2 ? LOW : HIGH);
+  }
+}
 
-  #else
+void MarlinHAL::init_pwm_timers() {
+  // Init some timer frequencies to a default 1KHz
+  const pin_t pwm_pin[] = {
+    #ifdef __AVR_ATmega2560__
+      10, 5, 6, 46
+    #elif defined(__AVR_ATmega1280__)
+      12, 31
+    #elif defined(__AVR_ATmega644__) || defined(__AVR_ATmega1284__)
+      15, 6
+    #elif defined(__AVR_AT90USB1286__) || defined(__AVR_mega64) || defined(__AVR_mega128)
+      16, 24
+    #endif
+  };
 
-    analogWrite(pin, v);
-    UNUSED(v_size);
-    UNUSED(invert);
-
-  #endif
+  for (uint8_t i = 0; i < COUNT(pwm_pin); ++i)
+    set_pwm_frequency(pwm_pin[i], 1000);
 }
 
 #endif // __AVR__

Marlin/src/HAL/AVR/fastio.cpp

@@ -245,7 +245,7 @@ uint16_t set_pwm_frequency_hz(const_float_t hz, const float dca, const float dcb
   float count = 0;
   if (hz > 0 && (dca || dcb || dcc)) {
     count = float(F_CPU) / hz;            // 1x prescaler, TOP for 16MHz base freq.
-    uint16_t prescaler;                   // Range of 30.5Hz (65535) 64.5KHz (>31)
+    uint16_t prescaler;                   // Range of 30.5Hz (65535) 64.5kHz (>31)
 
          if (count >= 255. * 256.) { prescaler = 1024; SET_CS(5, PRESCALER_1024); }
     else if (count >= 255. * 64.)  { prescaler = 256;  SET_CS(5,  PRESCALER_256); }
@@ -257,7 +257,7 @@ uint16_t set_pwm_frequency_hz(const_float_t hz, const float dca, const float dcb
     const float pwm_top = round(count);   // Get the rounded count
 
     ICR5 = (uint16_t)pwm_top - 1;         // Subtract 1 for TOP
-    OCR5A = pwm_top * ABS(dca);          // Update and scale DCs
+    OCR5A = pwm_top * ABS(dca);           // Update and scale DCs
     OCR5B = pwm_top * ABS(dcb);
     OCR5C = pwm_top * ABS(dcc);
     _SET_COM(5, A, dca ? (dca < 0 ? COM_SET_CLEAR : COM_CLEAR_SET) : COM_NORMAL); // Set compare modes
@@ -277,7 +277,7 @@ uint16_t set_pwm_frequency_hz(const_float_t hz, const float dca, const float dcb
     // Restore the default for Timer 5
     SET_WGM(5, PWM_PC_8);                 // PWM 8-bit (Phase Correct)
     SET_COMS(5, NORMAL, NORMAL, NORMAL);  // Do nothing
-    SET_CS(5, PRESCALER_64);              // 16MHz / 64 = 250KHz
+    SET_CS(5, PRESCALER_64);              // 16MHz / 64 = 250kHz
     OCR5A = OCR5B = OCR5C = 0;
   }
   return round(count);

Marlin/src/HAL/AVR/fastio.h

@@ -118,7 +118,7 @@
  */
 
 // Waveform Generation Modes
-enum WaveGenMode : char {
+enum WaveGenMode : uint8_t {
   WGM_NORMAL,          //  0
   WGM_PWM_PC_8,        //  1
   WGM_PWM_PC_9,        //  2
@@ -138,19 +138,19 @@ enum WaveGenMode : char {
 };
 
 // Wavefore Generation Modes (Timer 2 only)
-enum WaveGenMode2 : char {
-  WGM2_NORMAL,          // 0
-  WGM2_PWM_PC,          // 1
-  WGM2_CTC_OCR2A,       // 2
-  WGM2_FAST_PWM,        // 3
-  WGM2_reserved_1,      // 4
-  WGM2_PWM_PC_OCR2A,    // 5
-  WGM2_reserved_2,      // 6
-  WGM2_FAST_PWM_OCR2A,  // 7
+enum WaveGenMode2 : uint8_t {
+  WGM2_NORMAL,         // 0
+  WGM2_PWM_PC,         // 1
+  WGM2_CTC_OCR2A,      // 2
+  WGM2_FAST_PWM,       // 3
+  WGM2_reserved_1,     // 4
+  WGM2_PWM_PC_OCR2A,   // 5
+  WGM2_reserved_2,     // 6
+  WGM2_FAST_PWM_OCR2A, // 7
 };
 
 // Compare Modes
-enum CompareMode : char {
+enum CompareMode : uint8_t {
   COM_NORMAL,          //  0
   COM_TOGGLE,          //  1  Non-PWM: OCnx ... Both PWM (WGM 9,11,14,15): OCnA only ... else NORMAL
   COM_CLEAR_SET,       //  2  Non-PWM: OCnx ... Fast PWM: OCnx/Bottom ... PF-FC: OCnx Up/Down
@@ -158,7 +158,7 @@ enum CompareMode : char {
 };
 
 // Clock Sources
-enum ClockSource : char {
+enum ClockSource : uint8_t {
   CS_NONE,             //  0
   CS_PRESCALER_1,      //  1
   CS_PRESCALER_8,      //  2
@@ -170,7 +170,7 @@ enum ClockSource : char {
 };
 
 // Clock Sources (Timer 2 only)
-enum ClockSource2 : char {
+enum ClockSource2 : uint8_t {
   CS2_NONE,            //  0
   CS2_PRESCALER_1,     //  1
   CS2_PRESCALER_8,     //  2
@@ -203,11 +203,6 @@ enum ClockSource2 : char {
     TCCR##T##B = (TCCR##T##B & ~(0x3 << WGM##T##2)) | (((int(V) >> 2) & 0x3) << WGM##T##2); \
   }while(0)
 #define SET_WGM(T,V) _SET_WGM(T,WGM_##V)
-// Runtime (see set_pwm_frequency):
-#define _SET_WGMnQ(TCCRnQ, V) do{ \
-    *(TCCRnQ)[0] = (*(TCCRnQ)[0] & ~(0x3 << 0)) | (( int(V)       & 0x3) << 0); \
-    *(TCCRnQ)[1] = (*(TCCRnQ)[1] & ~(0x3 << 3)) | (((int(V) >> 2) & 0x3) << 3); \
-  }while(0)
 
 // Set Clock Select bits
 // Ex: SET_CS3(PRESCALER_64);
@@ -235,8 +230,6 @@ enum ClockSource2 : char {
 #define SET_CS4(V) _SET_CS4(CS_##V)
 #define SET_CS5(V) _SET_CS5(CS_##V)
 #define SET_CS(T,V) SET_CS##T(V)
-// Runtime (see set_pwm_frequency)
-#define _SET_CSn(TCCRnQ, V) (*(TCCRnQ)[1] = (*(TCCRnQ[1]) & ~(0x7 << 0)) | ((int(V) & 0x7) << 0))
 
 // Set Compare Mode bits
 // Ex: SET_COMS(4,CLEAR_SET,CLEAR_SET,CLEAR_SET);
@@ -246,16 +239,6 @@ enum ClockSource2 : char {
 #define SET_COMB(T,V) SET_COM(T,B,V)
 #define SET_COMC(T,V) SET_COM(T,C,V)
 #define SET_COMS(T,V1,V2,V3) do{ SET_COMA(T,V1); SET_COMB(T,V2); SET_COMC(T,V3); }while(0)
-// Runtime (see set_pwm_duty)
-#define _SET_COMnQ(TCCRnQ, Q, V) (*(TCCRnQ)[0] = (*(TCCRnQ)[0] & ~(0x3 << (6-2*(Q)))) | (int(V) << (6-2*(Q))))
-
-// Set OCRnQ register
-// Runtime (see set_pwm_duty):
-#define _SET_OCRnQ(OCRnQ, Q, V) (*(OCRnQ)[Q] = int(V) & 0xFFFF)
-
-// Set ICRn register (one per timer)
-// Runtime (see set_pwm_frequency)
-#define _SET_ICRn(ICRn, V) (*(ICRn) = int(V) & 0xFFFF)
 
 // Set Noise Canceler bit
 // Ex: SET_ICNC(2,1)
@@ -272,84 +255,6 @@ enum ClockSource2 : char {
 #define SET_FOCB(T,V) SET_FOC(T,B,V)
 #define SET_FOCC(T,V) SET_FOC(T,C,V)
 
-#if 0
-
-/**
- * PWM availability macros
- */
-
-// Determine which hardware PWMs are already in use
-#define _PWM_CHK_FAN_B(P) (P == E0_AUTO_FAN_PIN || P == E1_AUTO_FAN_PIN || P == E2_AUTO_FAN_PIN || P == E3_AUTO_FAN_PIN || P == E4_AUTO_FAN_PIN || P == E5_AUTO_FAN_PIN || P == E6_AUTO_FAN_PIN || P == E7_AUTO_FAN_PIN || P == CHAMBER_AUTO_FAN_PIN || P == COOLER_AUTO_FAN_PIN)
-#if PIN_EXISTS(CONTROLLER_FAN)
-  #define PWM_CHK_FAN_B(P) (_PWM_CHK_FAN_B(P) || P == CONTROLLER_FAN_PIN)
-#else
-  #define PWM_CHK_FAN_B(P) _PWM_CHK_FAN_B(P)
-#endif
-
-#if ANY_PIN(FAN, FAN1, FAN2, FAN3, FAN4, FAN5, FAN6, FAN7)
-  #if PIN_EXISTS(FAN7)
-    #define PWM_CHK_FAN_A(P) (P == FAN0_PIN || P == FAN1_PIN || P == FAN2_PIN || P == FAN3_PIN || P == FAN4_PIN || P == FAN5_PIN || P == FAN6_PIN || P == FAN7_PIN)
-  #elif PIN_EXISTS(FAN6)
-    #define PWM_CHK_FAN_A(P) (P == FAN0_PIN || P == FAN1_PIN || P == FAN2_PIN || P == FAN3_PIN || P == FAN4_PIN || P == FAN5_PIN || P == FAN6_PIN)
-  #elif PIN_EXISTS(FAN5)
-    #define PWM_CHK_FAN_A(P) (P == FAN0_PIN || P == FAN1_PIN || P == FAN2_PIN || P == FAN3_PIN || P == FAN4_PIN || P == FAN5_PIN)
-  #elif PIN_EXISTS(FAN4)
-    #define PWM_CHK_FAN_A(P) (P == FAN0_PIN || P == FAN1_PIN || P == FAN2_PIN || P == FAN3_PIN || P == FAN4_PIN)
-  #elif PIN_EXISTS(FAN3)
-    #define PWM_CHK_FAN_A(P) (P == FAN0_PIN || P == FAN1_PIN || P == FAN2_PIN || P == FAN3_PIN)
-  #elif PIN_EXISTS(FAN2)
-    #define PWM_CHK_FAN_A(P) (P == FAN0_PIN || P == FAN1_PIN || P == FAN2_PIN)
-  #elif PIN_EXISTS(FAN1)
-    #define PWM_CHK_FAN_A(P) (P == FAN0_PIN || P == FAN1_PIN)
-  #else
-    #define PWM_CHK_FAN_A(P) (P == FAN0_PIN)
-  #endif
-#else
-  #define PWM_CHK_FAN_A(P) false
-#endif
-
-#if HAS_MOTOR_CURRENT_PWM
-  #if PIN_EXISTS(MOTOR_CURRENT_PWM_XY)
-    #define PWM_CHK_MOTOR_CURRENT(P) (P == MOTOR_CURRENT_PWM_E || P == MOTOR_CURRENT_PWM_Z || P == MOTOR_CURRENT_PWM_XY)
-  #elif PIN_EXISTS(MOTOR_CURRENT_PWM_Z)
-    #define PWM_CHK_MOTOR_CURRENT(P) (P == MOTOR_CURRENT_PWM_E || P == MOTOR_CURRENT_PWM_Z)
-  #else
-    #define PWM_CHK_MOTOR_CURRENT(P) (P == MOTOR_CURRENT_PWM_E)
-  #endif
-#else
-  #define PWM_CHK_MOTOR_CURRENT(P) false
-#endif
-
-#ifdef NUM_SERVOS
-  #if AVR_ATmega2560_FAMILY
-    #define PWM_CHK_SERVO(P) (P == 5 || (NUM_SERVOS > 12 && P == 6) || (NUM_SERVOS > 24 && P == 46))  // PWMS 3A, 4A & 5A
-  #elif AVR_ATmega2561_FAMILY
-    #define PWM_CHK_SERVO(P)   (P == 5)  // PWM3A
-  #elif AVR_ATmega1284_FAMILY
-    #define PWM_CHK_SERVO(P)   false
-  #elif AVR_AT90USB1286_FAMILY
-    #define PWM_CHK_SERVO(P)   (P == 16) // PWM3A
-  #elif AVR_ATmega328_FAMILY
-    #define PWM_CHK_SERVO(P)   false
-  #endif
-#else
-  #define PWM_CHK_SERVO(P) false
-#endif
-
-#if ENABLED(BARICUDA)
-  #if HAS_HEATER_1 && HAS_HEATER_2
-    #define PWM_CHK_HEATER(P) (P == HEATER_1_PIN || P == HEATER_2_PIN)
-  #elif HAS_HEATER_1
-    #define PWM_CHK_HEATER(P) (P == HEATER_1_PIN)
-  #endif
-#else
-    #define PWM_CHK_HEATER(P) false
-#endif
-
-#define PWM_CHK(P) (PWM_CHK_HEATER(P) || PWM_CHK_SERVO(P) || PWM_CHK_MOTOR_CURRENT(P) || PWM_CHK_FAN_A(P) || PWM_CHK_FAN_B(P))
-
-#endif // PWM_CHK is not used in Marlin
-
 // define which hardware PWMs are available for the current CPU
 // all timer 1 PWMS deleted from this list because they are never available
 #if AVR_ATmega2560_FAMILY

Marlin/src/HAL/AVR/fastio/fastio_1280.h

@@ -27,43 +27,41 @@
  *   Hardware Pin  : 02 03 06 07 01 05 15 16 17 18 23 24 25 26 64 63 13 12 46 45 44 43 78 77 76 75 74 73 72 71 60 59 58 57 56 55 54 53 50 70 52 51 42 41 40 39 38 37 36 35 22 21 20 19 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 | 04 08 09 10 11 14 27 28 29 30 31 32 33 34 47 48 49 61 62 65 66 67 68 69 79 80 81 98 99 100
  *   Port          : E0 E1 E4 E5 G5 E3 H3 H4 H5 H6 B4 B5 B6 B7 J1 J0 H1 H0 D3 D2 D1 D0 A0 A1 A2 A3 A4 A5 A6 A7 C7 C6 C5 C4 C3 C2 C1 C0 D7 G2 G1 G0 L7 L6 L5 L4 L3 L2 L1 L0 B3 B2 B1 B0 F0 F1 F2 F3 F4 F5 F6 F7 K0 K1 K2 K3 K4 K5 K6 K7 | E2 E6 E7 xx xx H2 H7 G3 G4 xx xx xx xx xx D4 D5 D6 xx xx J2 J3 J4 J5 J6 J7 xx xx xx xx xx
  *   Logical Pin   : 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 | 78 79 80 xx xx 84 85 71 70 xx xx xx xx xx 81 82 83 xx xx 72 73 75 76 77 74 xx xx xx xx xx
+ *   Analog Input  :                                                                                                                                                                    0  1  2  3  4  5  6  7  8  9 10 11 12 13 14 15
  */
 
 #include "../fastio.h"
 
-// change for your board
-#define DEBUG_LED   DIO21
-
 // UART
-#define RXD         DIO0
-#define TXD         DIO1
+#define RXD         0
+#define TXD         1
 
 // SPI
-#define SCK         DIO52
-#define MISO        DIO50
-#define MOSI        DIO51
-#define SS          DIO53
+#define MISO        50
+#define MOSI        51
+#define SCK         52
+#define SS          53
 
 // TWI (I2C)
-#define SCL         DIO21
-#define SDA         DIO20
+#define SCL         21
+#define SDA         20
 
 // Timers and PWM
-#define OC0A        DIO13
-#define OC0B        DIO4
-#define OC1A        DIO11
-#define OC1B        DIO12
-#define OC2A        DIO10
-#define OC2B        DIO9
-#define OC3A        DIO5
-#define OC3B        DIO2
-#define OC3C        DIO3
-#define OC4A        DIO6
-#define OC4B        DIO7
-#define OC4C        DIO8
-#define OC5A        DIO46
-#define OC5B        DIO45
-#define OC5C        DIO44
+#define OC0A        13
+#define OC0B        4
+#define OC1A        11
+#define OC1B        12
+#define OC2A        10
+#define OC2B        9
+#define OC3A        5
+#define OC3B        2
+#define OC3C        3
+#define OC4A        6
+#define OC4B        7
+#define OC4C        8
+#define OC5A        46
+#define OC5B        45
+#define OC5C        44
 
 // Digital I/O
 

Marlin/src/HAL/AVR/fastio/fastio_1281.h

@@ -30,32 +30,29 @@
 
 #include "../fastio.h"
 
-// change for your board
-#define DEBUG_LED   DIO46
-
 // UART
-#define RXD         DIO0
-#define TXD         DIO1
+#define RXD         0
+#define TXD         1
 
 // SPI
-#define SCK         DIO10
-#define MISO        DIO12
-#define MOSI        DIO11
-#define SS          DIO16
+#define SCK         10
+#define MISO        12
+#define MOSI        11
+#define SS          16
 
 // TWI (I2C)
-#define SCL         DIO17
-#define SDA         DIO18
+#define SCL         17
+#define SDA         18
 
 // Timers and PWM
-#define OC0A        DIO9
-#define OC0B        DIO4
-#define OC1A        DIO7
-#define OC1B        DIO8
-#define OC2A        DIO6
-#define OC3A        DIO5
-#define OC3B        DIO2
-#define OC3C        DIO3
+#define OC0A        9
+#define OC0B        4
+#define OC1A        7
+#define OC1B        8
+#define OC2A        6
+#define OC3A        5
+#define OC3B        2
+#define OC3C        3
 
 // Digital I/O
 

Marlin/src/HAL/AVR/fastio/fastio_168.h

@@ -30,29 +30,27 @@
 
 #include "../fastio.h"
 
-#define DEBUG_LED   AIO5
-
 // UART
-#define RXD         DIO0
-#define TXD         DIO1
+#define RXD         0
+#define TXD         1
 
 // SPI
-#define SCK         DIO13
-#define MISO        DIO12
-#define MOSI        DIO11
-#define SS          DIO10
+#define SS          10
+#define MOSI        11
+#define MISO        12
+#define SCK         13
 
 // TWI (I2C)
 #define SCL         AIO5
 #define SDA         AIO4
 
 // Timers and PWM
-#define OC0A        DIO6
-#define OC0B        DIO5
-#define OC1A        DIO9
-#define OC1B        DIO10
-#define OC2A        DIO11
-#define OC2B        DIO3
+#define OC0A        6
+#define OC0B        5
+#define OC1A        9
+#define OC1B        10
+#define OC2A        11
+#define OC2B        3
 
 // Digital I/O
 

Marlin/src/HAL/AVR/fastio/fastio_644.h

@@ -56,34 +56,32 @@
 
 #include "../fastio.h"
 
-#define DEBUG_LED   DIO0
-
 // UART
-#define RXD         DIO8
-#define TXD         DIO9
-#define RXD0        DIO8
-#define TXD0        DIO9
+#define RXD         8
+#define TXD         9
+#define RXD0        8
+#define TXD0        9
 
-#define RXD1        DIO10
-#define TXD1        DIO11
+#define RXD1        10
+#define TXD1        11
 
 // SPI
-#define SCK         DIO7
-#define MISO        DIO6
-#define MOSI        DIO5
-#define SS          DIO4
+#define SS          4
+#define MOSI        5
+#define MISO        6
+#define SCK         7
 
 // TWI (I2C)
-#define SCL         DIO16
-#define SDA         DIO17
+#define SCL         16
+#define SDA         17
 
 // Timers and PWM
-#define OC0A        DIO3
-#define OC0B        DIO4
-#define OC1A        DIO13
-#define OC1B        DIO12
-#define OC2A        DIO15
-#define OC2B        DIO14
+#define OC0A        3
+#define OC0B        4
+#define OC1A        13
+#define OC1B        12
+#define OC2A        15
+#define OC2B        14
 
 // Digital I/O
 

Marlin/src/HAL/AVR/fastio/fastio_AT90USB.h

@@ -31,14 +31,11 @@
 
 #include "../fastio.h"
 
-// change for your board
-#define DEBUG_LED   DIO31 /* led D5 red */
-
 // SPI
-#define SCK         DIO21  //  9
-#define MISO        DIO23  // 11
-#define MOSI        DIO22  // 10
-#define SS          DIO20  //  8
+#define SS          20  //  8
+#define SCK         21  //  9
+#define MOSI        22  // 10
+#define MISO        23  // 11
 
 // Digital I/O
 
@@ -679,7 +676,6 @@
 #define PF7_PWM     0
 #define PF7_DDR     DDRF
 
-
 /**
  * Some of the pin mapping functions of the Teensduino extension to the Arduino IDE
  * do not function the same as the other Arduino extensions.

Marlin/src/HAL/AVR/inc/Conditionals_LCD.h

@@ -21,6 +21,6 @@
  */
 #pragma once
 
-#if HAS_SPI_TFT || HAS_FSMC_TFT
-  #error "Sorry! TFT displays are not available for HAL/AVR."
+#ifndef SERIAL_PORT
+  #define SERIAL_PORT 0
 #endif

Marlin/src/HAL/AVR/inc/SanityCheck.h

@@ -25,11 +25,57 @@
  * Test AVR-specific configuration values for errors at compile-time.
  */
 
+#if HAS_SPI_TFT || HAS_FSMC_TFT
+  #error "Sorry! TFT displays are not available for HAL/AVR."
+#endif
+
+/**
+ * Check for common serial pin conflicts
+ */
+#define CHECK_SERIAL_PIN(N) ( \
+     X_STOP_PIN == N || Y_STOP_PIN == N || Z_STOP_PIN  == N \
+  || X_MIN_PIN  == N || Y_MIN_PIN  == N || Z_MIN_PIN   == N \
+  || X_MAX_PIN  == N || Y_MAX_PIN  == N || Z_MAX_PIN   == N \
+  || X_STEP_PIN == N || Y_STEP_PIN == N || Z_STEP_PIN  == N \
+  || X_DIR_PIN  == N || Y_DIR_PIN  == N || Z_DIR_PIN   == N \
+  || X_ENA_PIN  == N || Y_ENA_PIN  == N || Z_ENA_PIN   == N \
+  || BTN_EN1    == N || BTN_EN2    == N || LCD_PINS_EN == N \
+)
+#if SERIAL_IN_USE(0)
+  // D0-D1. No known conflicts.
+#endif
+#if SERIAL_IN_USE(1)
+  #if NOT_TARGET(__AVR_ATmega644P__, __AVR_ATmega1284P__)
+    #if CHECK_SERIAL_PIN(18) || CHECK_SERIAL_PIN(19)
+      #error "Serial Port 1 pin D18 and/or D19 conflicts with another pin on the board."
+    #endif
+  #else
+    #if CHECK_SERIAL_PIN(10) || CHECK_SERIAL_PIN(11)
+      #error "Serial Port 1 pin D10 and/or D11 conflicts with another pin on the board."
+    #endif
+  #endif
+#endif
+#if SERIAL_IN_USE(2) && (CHECK_SERIAL_PIN(16) || CHECK_SERIAL_PIN(17))
+  #error "Serial Port 2 pin D16 and/or D17 conflicts with another pin on the board."
+#endif
+#if SERIAL_IN_USE(3) && (CHECK_SERIAL_PIN(14) || CHECK_SERIAL_PIN(15))
+  #error "Serial Port 3 pin D14 and/or D15 conflicts with another pin on the board."
+#endif
+#undef CHECK_SERIAL_PIN
+
 /**
  * Checks for FAST PWM
  */
 #if ALL(FAST_PWM_FAN, USE_OCR2A_AS_TOP, HAS_TCCR2)
-  #error "USE_OCR2A_AS_TOP does not apply to devices with a single output TIMER2"
+  #error "USE_OCR2A_AS_TOP does not apply to devices with a single output TIMER2."
+#endif
+
+/**
+ * Checks for SOFT PWM
+ */
+#if HAS_FAN0 && FAN0_PIN == 9 && DISABLED(FAN_SOFT_PWM) && ENABLED(SPEAKER)
+  #error "FAN0_PIN 9 Hardware PWM uses Timer 2 which conflicts with Arduino AVR Tone Timer (for SPEAKER)."
+  #error "Disable SPEAKER or enable FAN_SOFT_PWM."
 #endif
 
 /**
@@ -42,18 +88,18 @@
   #elif NUM_SERVOS > 0 && defined(_useTimer3) && (WITHIN(SPINDLE_LASER_PWM_PIN, 2, 3) || SPINDLE_LASER_PWM_PIN == 5)
     #error "Counter/Timer for SPINDLE_LASER_PWM_PIN is used by the servo system."
   #endif
-#elif defined(SPINDLE_LASER_FREQUENCY)
+#elif SPINDLE_LASER_FREQUENCY
   #error "SPINDLE_LASER_FREQUENCY requires SPINDLE_LASER_USE_PWM."
 #endif
 
 /**
  * The Trinamic library includes SoftwareSerial.h, leading to a compile error.
  */
-#if BOTH(HAS_TRINAMIC_CONFIG, ENDSTOP_INTERRUPTS_FEATURE)
+#if ALL(HAS_TRINAMIC_CONFIG, ENDSTOP_INTERRUPTS_FEATURE)
   #error "TMCStepper includes SoftwareSerial.h which is incompatible with ENDSTOP_INTERRUPTS_FEATURE. Disable ENDSTOP_INTERRUPTS_FEATURE to continue."
 #endif
 
-#if BOTH(HAS_TMC_SW_SERIAL, MONITOR_DRIVER_STATUS)
+#if ALL(HAS_TMC_SW_SERIAL, MONITOR_DRIVER_STATUS)
   #error "MONITOR_DRIVER_STATUS causes performance issues when used with SoftwareSerial-connected drivers. Disable MONITOR_DRIVER_STATUS or use hardware serial to continue."
 #endif
 
@@ -63,3 +109,7 @@
 #if ENABLED(POSTMORTEM_DEBUGGING)
   #error "POSTMORTEM_DEBUGGING is not supported on AVR boards."
 #endif
+
+#if USING_PULLDOWNS
+  #error "PULLDOWN pin mode is not available on AVR boards."
+#endif

Marlin/src/HAL/AVR/math.h

@@ -27,15 +27,16 @@
 
 // intRes = longIn1 * longIn2 >> 24
 // uses:
-// A[tmp] to store 0
-// B[tmp] to store bits 16-23 of the 48bit result. The top bit is used to round the two byte result.
-// note that the lower two bytes and the upper byte of the 48bit result are not calculated.
-// this can cause the result to be out by one as the lower bytes may cause carries into the upper ones.
-// B A are bits 24-39 and are the returned value
-// C B A is longIn1
-// D C B A is longIn2
+// r1, r0 for the result of mul.
+// [tmp1] to store 0.
+// [tmp2] to store bits 16-23 of the 56 bit result. The top bit of [tmp2] is used for rounding.
+// Note that the lower two bytes and the upper two bytes of the 56 bit result are not calculated.
+// This can cause the result to be out by one as the lower bytes may cause carries into the upper ones.
+// [intRes] (A B) is bits 24-39 and is the returned value.
+// [longIn1] (C B A) is a 24 bit parameter.
+// [longIn2] (D C B A) is a 32 bit parameter.
 //
-static FORCE_INLINE uint16_t MultiU24X32toH16(uint32_t longIn1, uint32_t longIn2) {
+FORCE_INLINE static uint16_t MultiU24X32toH16(uint32_t longIn1, uint32_t longIn2) {
   uint8_t tmp1;
   uint8_t tmp2;
   uint16_t intRes;
@@ -66,11 +67,9 @@ static FORCE_INLINE uint16_t MultiU24X32toH16(uint32_t longIn1, uint32_t longIn2
     A("add %[tmp2], r1")
     A("adc %A[intRes], %[tmp1]")
     A("adc %B[intRes], %[tmp1]")
-    A("lsr %[tmp2]")
-    A("adc %A[intRes], %[tmp1]")
-    A("adc %B[intRes], %[tmp1]")
     A("mul %D[longIn2], %A[longIn1]")
-    A("add %A[intRes], r0")
+    A("lsl %[tmp2]")
+    A("adc %A[intRes], r0")
     A("adc %B[intRes], r1")
     A("mul %D[longIn2], %B[longIn1]")
     A("add %B[intRes], r0")
@@ -85,11 +84,16 @@ static FORCE_INLINE uint16_t MultiU24X32toH16(uint32_t longIn1, uint32_t longIn2
   return intRes;
 }
 
-// intRes = intIn1 * intIn2 >> 16
+// intRes = intIn1 * intIn2 >> 8
 // uses:
-// r26 to store 0
-// r27 to store the byte 1 of the 24 bit result
-static FORCE_INLINE uint16_t MultiU16X8toH16(uint8_t charIn1, uint16_t intIn2) {
+// r1, r0 for the result of mul. After the second mul, r0 holds bits 0-7 of the 24 bit result and
+// the top bit of r0 is used for rounding.
+// [tmp] to store 0.
+// [intRes] (A B) is bits 8-15 and is the returned value.
+// [charIn1] is an 8 bit parameter.
+// [intIn2] (B A) is a 16 bit parameter.
+//
+FORCE_INLINE static uint16_t MultiU8X16toH16(uint8_t charIn1, uint16_t intIn2) {
   uint8_t tmp;
   uint16_t intRes;
   __asm__ __volatile__ (
@@ -97,10 +101,8 @@ static FORCE_INLINE uint16_t MultiU16X8toH16(uint8_t charIn1, uint16_t intIn2) {
     A("mul %[charIn1], %B[intIn2]")
     A("movw %A[intRes], r0")
     A("mul %[charIn1], %A[intIn2]")
-    A("add %A[intRes], r1")
-    A("adc %B[intRes], %[tmp]")
-    A("lsr r0")
-    A("adc %A[intRes], %[tmp]")
+    A("lsl r0")
+    A("adc %A[intRes], r1")
     A("adc %B[intRes], %[tmp]")
     A("clr r1")
       : [intRes] "=&r" (intRes),

Marlin/src/HAL/AVR/pinsDebug.h

@@ -64,23 +64,25 @@
 
 #define VALID_PIN(pin) (pin >= 0 && pin < NUM_DIGITAL_PINS ? 1 : 0)
 #if AVR_ATmega1284_FAMILY
-  #define DIGITAL_PIN_TO_ANALOG_PIN(P) int(analogInputToDigitalPin(0) - (P))
-  #define IS_ANALOG(P) ((P) >= analogInputToDigitalPin(7) && (P) <= analogInputToDigitalPin(0))
+  #define IS_ANALOG(P) WITHIN(P, analogInputToDigitalPin(7), analogInputToDigitalPin(0))
+  #define DIGITAL_PIN_TO_ANALOG_PIN(P) int(IS_ANALOG(P) ? (P) - analogInputToDigitalPin(7) : -1)
 #else
-  #define DIGITAL_PIN_TO_ANALOG_PIN(P) int((P) - analogInputToDigitalPin(0))
-  #define IS_ANALOG(P) ((P) >= analogInputToDigitalPin(0) && ((P) <= analogInputToDigitalPin(15) || (P) <= analogInputToDigitalPin(7)))
+  #define _ANALOG1(P) WITHIN(P, analogInputToDigitalPin(0), analogInputToDigitalPin(7))
+  #define _ANALOG2(P) WITHIN(P, analogInputToDigitalPin(8), analogInputToDigitalPin(15))
+  #define IS_ANALOG(P) (_ANALOG1(P) || _ANALOG2(P))
+  #define DIGITAL_PIN_TO_ANALOG_PIN(P) int(_ANALOG1(P) ? (P) - analogInputToDigitalPin(0) : _ANALOG2(P) ? (P) - analogInputToDigitalPin(8) + 8 : -1)
 #endif
 #define GET_ARRAY_PIN(p) pgm_read_byte(&pin_array[p].pin)
 #define MULTI_NAME_PAD 26 // space needed to be pretty if not first name assigned to a pin
 
 void PRINT_ARRAY_NAME(uint8_t x) {
-  char *name_mem_pointer = (char*)pgm_read_ptr(&pin_array[x].name);
-  LOOP_L_N(y, MAX_NAME_LENGTH) {
+  PGM_P const name_mem_pointer = (PGM_P)pgm_read_ptr(&pin_array[x].name);
+  for (uint8_t y = 0; y < MAX_NAME_LENGTH; ++y) {
     char temp_char = pgm_read_byte(name_mem_pointer + y);
     if (temp_char != 0)
       SERIAL_CHAR(temp_char);
     else {
-      LOOP_L_N(i, MAX_NAME_LENGTH - y) SERIAL_CHAR(' ');
+      for (uint8_t i = 0; i < MAX_NAME_LENGTH - y; ++i) SERIAL_CHAR(' ');
       break;
     }
   }
@@ -88,7 +90,6 @@ void PRINT_ARRAY_NAME(uint8_t x) {
 
 #define GET_ARRAY_IS_DIGITAL(x)   pgm_read_byte(&pin_array[x].is_digital)
 
-
 #if defined(__AVR_ATmega1284P__)  // 1284 IDE extensions set this to the number of
   #undef NUM_DIGITAL_PINS         // digital only pins while all other CPUs have it
   #define NUM_DIGITAL_PINS 32     // set to digital only + digital/analog
@@ -108,7 +109,7 @@ void PRINT_ARRAY_NAME(uint8_t x) {
  * Print a pin's PWM status.
  * Return true if it's currently a PWM pin.
  */
-static bool pwm_status(uint8_t pin) {
+bool pwm_status(uint8_t pin) {
   char buffer[20];   // for the sprintf statements
 
   switch (digitalPinToTimer_DEBUG(pin)) {
@@ -162,7 +163,6 @@ static bool pwm_status(uint8_t pin) {
   SERIAL_ECHO_SP(2);
 } // pwm_status
 
-
 const volatile uint8_t* const PWM_other[][3] PROGMEM = {
     { &TCCR0A, &TCCR0B, &TIMSK0 },
     { &TCCR1A, &TCCR1B, &TIMSK1 },
@@ -180,7 +180,6 @@ const volatile uint8_t* const PWM_other[][3] PROGMEM = {
   #endif
 };
 
-
 const volatile uint8_t* const PWM_OCR[][3] PROGMEM = {
 
   #ifdef TIMER0A
@@ -216,7 +215,6 @@ const volatile uint8_t* const PWM_OCR[][3] PROGMEM = {
   #endif
 };
 
-
 #define TCCR_A(T)   pgm_read_word(&PWM_other[T][0])
 #define TCCR_B(T)   pgm_read_word(&PWM_other[T][1])
 #define TIMSK(T)    pgm_read_word(&PWM_other[T][2])
@@ -231,12 +229,12 @@ const volatile uint8_t* const PWM_OCR[][3] PROGMEM = {
 
 #define OCR_VAL(T, L)   pgm_read_word(&PWM_OCR[T][L])
 
-static void err_is_counter()     { SERIAL_ECHOPGM("   non-standard PWM mode"); }
-static void err_is_interrupt()   { SERIAL_ECHOPGM("   compare interrupt enabled"); }
-static void err_prob_interrupt() { SERIAL_ECHOPGM("   overflow interrupt enabled"); }
-static void print_is_also_tied() { SERIAL_ECHOPGM(" is also tied to this pin"); SERIAL_ECHO_SP(14); }
+void err_is_counter()     { SERIAL_ECHOPGM("   non-standard PWM mode"); }
+void err_is_interrupt()   { SERIAL_ECHOPGM("   compare interrupt enabled"); }
+void err_prob_interrupt() { SERIAL_ECHOPGM("   overflow interrupt enabled"); }
+void print_is_also_tied() { SERIAL_ECHOPGM(" is also tied to this pin"); SERIAL_ECHO_SP(14); }
 
-inline void com_print(const uint8_t N, const uint8_t Z) {
+void com_print(const uint8_t N, const uint8_t Z) {
   const uint8_t *TCCRA = (uint8_t*)TCCR_A(N);
   SERIAL_ECHOPGM("    COM", AS_DIGIT(N));
   SERIAL_CHAR(Z);
@@ -278,7 +276,7 @@ void timer_prefix(uint8_t T, char L, uint8_t N) {  // T - timer    L - pwm  N -
   if (TEST(*TMSK, TOIE)) err_prob_interrupt();
 }
 
-static void pwm_details(uint8_t pin) {
+void pwm_details(uint8_t pin) {
   switch (digitalPinToTimer_DEBUG(pin)) {
 
     #if ABTEST(0)
@@ -352,47 +350,41 @@ static void pwm_details(uint8_t pin) {
 } // pwm_details
 
 #ifndef digitalRead_mod                   // Use Teensyduino's version of digitalRead - it doesn't disable the PWMs
-  int digitalRead_mod(const int8_t pin) { // same as digitalRead except the PWM stop section has been removed
+  int digitalRead_mod(const pin_t pin) {  // same as digitalRead except the PWM stop section has been removed
     const uint8_t port = digitalPinToPort_DEBUG(pin);
     return (port != NOT_A_PIN) && (*portInputRegister(port) & digitalPinToBitMask_DEBUG(pin)) ? HIGH : LOW;
   }
 #endif
 
-#ifndef PRINT_PORT
+void print_port(const pin_t pin) {   // print port number
+  #ifdef digitalPinToPort_DEBUG
+    uint8_t x;
+    SERIAL_ECHOPGM("  Port: ");
+    #if AVR_AT90USB1286_FAMILY
+      x = (pin == 46 || pin == 47) ? 'E' : digitalPinToPort_DEBUG(pin) + 64;
+    #else
+      x = digitalPinToPort_DEBUG(pin) + 64;
+    #endif
+    SERIAL_CHAR(x);
 
-  void print_port(int8_t pin) {   // print port number
-    #ifdef digitalPinToPort_DEBUG
-      uint8_t x;
-      SERIAL_ECHOPGM("  Port: ");
-      #if AVR_AT90USB1286_FAMILY
-        x = (pin == 46 || pin == 47) ? 'E' : digitalPinToPort_DEBUG(pin) + 64;
-      #else
-        x = digitalPinToPort_DEBUG(pin) + 64;
-      #endif
-      SERIAL_CHAR(x);
-
-      #if AVR_AT90USB1286_FAMILY
-        if (pin == 46)
-          x = '2';
-        else if (pin == 47)
-          x = '3';
-        else {
-          uint8_t temp = digitalPinToBitMask_DEBUG(pin);
-          for (x = '0'; x < '9' && temp != 1; x++) temp >>= 1;
-        }
-      #else
+    #if AVR_AT90USB1286_FAMILY
+      if (pin == 46)
+        x = '2';
+      else if (pin == 47)
+        x = '3';
+      else {
         uint8_t temp = digitalPinToBitMask_DEBUG(pin);
         for (x = '0'; x < '9' && temp != 1; x++) temp >>= 1;
-      #endif
-      SERIAL_CHAR(x);
+      }
     #else
-      SERIAL_ECHO_SP(10);
+      uint8_t temp = digitalPinToBitMask_DEBUG(pin);
+      for (x = '0'; x < '9' && temp != 1; x++) temp >>= 1;
     #endif
-  }
-
-  #define PRINT_PORT(p) print_port(p)
-
-#endif
+    SERIAL_CHAR(x);
+  #else
+    SERIAL_ECHO_SP(10);
+  #endif
+}
 
 #define PRINT_PIN(p) do{ sprintf_P(buffer, PSTR("%3d "), p); SERIAL_ECHO(buffer); }while(0)
 #define PRINT_PIN_ANALOG(p) do{ sprintf_P(buffer, PSTR(" (A%2d)  "), DIGITAL_PIN_TO_ANALOG_PIN(pin)); SERIAL_ECHO(buffer); }while(0)

Marlin/src/HAL/AVR/pinsDebug_Teensyduino.h

@@ -22,11 +22,10 @@
 #pragma once
 
 //
-//  some of the pin mapping functions of the Teensduino extension to the Arduino IDE
-//  do not function the same as the other Arduino extensions
+// Some of the pin mapping functions of the Arduino IDE Teensduino extension
+// function differently from other Arduino extensions.
 //
 
-
 #define TEENSYDUINO_IDE
 
 //digitalPinToTimer(pin) function works like Arduino but Timers are not defined
@@ -48,8 +47,6 @@
 #define PE 5
 #define PF 6
 
-#undef digitalPinToPort
-
 const uint8_t PROGMEM digital_pin_to_port_PGM[] = {
   PD, // 0  - PD0 - INT0 - PWM
   PD, // 1  - PD1 - INT1 - PWM
@@ -101,7 +98,7 @@ const uint8_t PROGMEM digital_pin_to_port_PGM[] = {
   PE, // 47 - PE3 (not defined in teensyduino)
 };
 
-#define digitalPinToPort(P) ( pgm_read_byte( digital_pin_to_port_PGM + (P) ) )
+#define digitalPinToPort(P) pgm_read_byte(digital_pin_to_port_PGM[P])
 
 // digitalPinToBitMask(pin) is OK
 

Marlin/src/HAL/AVR/pinsDebug_plus_70.h

@@ -231,7 +231,6 @@ const uint8_t PROGMEM digital_pin_to_bit_mask_PGM_plus_70[] = {
 
 #define digitalPinToBitMask_plus_70(P) ( pgm_read_byte( digital_pin_to_bit_mask_PGM_plus_70 + (P) ) )
 
-
 const uint8_t PROGMEM digital_pin_to_timer_PGM_plus_70[] = {
   // TIMERS
   // ------------------------

Marlin/src/HAL/AVR/timers.h

@@ -1,7 +1,9 @@
 /**
  * Marlin 3D Printer Firmware
  * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
- * Copyright (c) 2016 Bob Cousins bobcousins42@googlemail.com
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -44,23 +46,23 @@ typedef uint16_t hal_timer_t;
   #define MF_TIMER_TEMP         0
 #endif
 
-#define TEMP_TIMER_FREQUENCY    ((F_CPU) / 64.0 / 256.0)
+#define TEMP_TIMER_FREQUENCY    (((F_CPU) + 0x2000) / 0x4000)
 
 #define STEPPER_TIMER_RATE      HAL_TIMER_RATE
 #define STEPPER_TIMER_PRESCALE  8
-#define STEPPER_TIMER_TICKS_PER_US ((STEPPER_TIMER_RATE) / 1000000) // Cannot be of type double
+#define STEPPER_TIMER_TICKS_PER_US ((STEPPER_TIMER_RATE) / 1000000)
 
-#define PULSE_TIMER_RATE       STEPPER_TIMER_RATE   // frequency of pulse timer
-#define PULSE_TIMER_PRESCALE   STEPPER_TIMER_PRESCALE
+#define PULSE_TIMER_RATE         STEPPER_TIMER_RATE
+#define PULSE_TIMER_PRESCALE     STEPPER_TIMER_PRESCALE
 #define PULSE_TIMER_TICKS_PER_US STEPPER_TIMER_TICKS_PER_US
 
 #define ENABLE_STEPPER_DRIVER_INTERRUPT()  SBI(TIMSK1, OCIE1A)
 #define DISABLE_STEPPER_DRIVER_INTERRUPT() CBI(TIMSK1, OCIE1A)
 #define STEPPER_ISR_ENABLED()             TEST(TIMSK1, OCIE1A)
 
-#define ENABLE_TEMPERATURE_INTERRUPT()     SBI(TIMSK0, OCIE0B)
-#define DISABLE_TEMPERATURE_INTERRUPT()    CBI(TIMSK0, OCIE0B)
-#define TEMPERATURE_ISR_ENABLED()         TEST(TIMSK0, OCIE0B)
+#define ENABLE_TEMPERATURE_INTERRUPT()     SBI(TIMSK0, OCIE0A)
+#define DISABLE_TEMPERATURE_INTERRUPT()    CBI(TIMSK0, OCIE0A)
+#define TEMPERATURE_ISR_ENABLED()         TEST(TIMSK0, OCIE0A)
 
 FORCE_INLINE void HAL_timer_start(const uint8_t timer_num, const uint32_t) {
   switch (timer_num) {
@@ -87,7 +89,7 @@ FORCE_INLINE void HAL_timer_start(const uint8_t timer_num, const uint32_t) {
     case MF_TIMER_TEMP:
       // Use timer0 for temperature measurement
       // Interleave temperature interrupt with millies interrupt
-      OCR0B = 128;
+      OCR0A = 128;
       break;
   }
 }
@@ -109,12 +111,12 @@ FORCE_INLINE void HAL_timer_start(const uint8_t timer_num, const uint32_t) {
  * (otherwise, characters will be lost due to UART overflow).
  * Then: Stepper, Endstops, Temperature, and -finally- all others.
  */
-#define HAL_timer_isr_prologue(T)
-#define HAL_timer_isr_epilogue(T)
+#define HAL_timer_isr_prologue(T) NOOP
+#define HAL_timer_isr_epilogue(T) NOOP
 
-/* 18 cycles maximum latency */
 #ifndef HAL_STEP_TIMER_ISR
 
+/* 18 cycles maximum latency */
 #define HAL_STEP_TIMER_ISR() \
 extern "C" void TIMER1_COMPA_vect() __attribute__ ((signal, naked, used, externally_visible)); \
 extern "C" void TIMER1_COMPA_vect_bottom() asm ("TIMER1_COMPA_vect_bottom") __attribute__ ((used, externally_visible, noinline)); \
@@ -180,7 +182,7 @@ void TIMER1_COMPA_vect() { \
     :                                   \
     : [timsk0] "i" ((uint16_t)&TIMSK0), \
       [timsk1] "i" ((uint16_t)&TIMSK1), \
-      [msk0] "M" ((uint8_t)(1<<OCIE0B)),\
+      [msk0] "M" ((uint8_t)(1<<OCIE0A)),\
       [msk1] "M" ((uint8_t)(1<<OCIE1A)) \
     : \
   ); \
@@ -193,9 +195,9 @@ void TIMER1_COMPA_vect_bottom()
 
 /* 14 cycles maximum latency */
 #define HAL_TEMP_TIMER_ISR() \
-extern "C" void TIMER0_COMPB_vect() __attribute__ ((signal, naked, used, externally_visible)); \
-extern "C" void TIMER0_COMPB_vect_bottom()  asm ("TIMER0_COMPB_vect_bottom") __attribute__ ((used, externally_visible, noinline)); \
-void TIMER0_COMPB_vect() { \
+extern "C" void TIMER0_COMPA_vect() __attribute__ ((signal, naked, used, externally_visible)); \
+extern "C" void TIMER0_COMPA_vect_bottom()  asm ("TIMER0_COMPA_vect_bottom") __attribute__ ((used, externally_visible, noinline)); \
+void TIMER0_COMPA_vect() { \
   __asm__ __volatile__ ( \
     A("push r16")                       /* 2 Save R16 */ \
     A("in r16, __SREG__")               /* 1 Get SREG */ \
@@ -223,7 +225,7 @@ void TIMER0_COMPB_vect() { \
     A("push r30")                       \
     A("push r31")                       \
     A("clr r1")                         /* C runtime expects this register to be 0 */ \
-    A("call TIMER0_COMPB_vect_bottom")  /* Call the bottom handler - No inlining allowed, otherwise registers used are not saved */   \
+    A("call TIMER0_COMPA_vect_bottom")  /* Call the bottom handler - No inlining allowed, otherwise registers used are not saved */   \
     A("pop r31")                        \
     A("pop r30")                        \
     A("pop r27")                        \
@@ -251,10 +253,10 @@ void TIMER0_COMPB_vect() { \
     A("reti")                           /* 4 Return from interrupt */ \
     :                                   \
     : [timsk0] "i"((uint16_t)&TIMSK0),  \
-      [msk0] "M" ((uint8_t)(1<<OCIE0B)) \
+      [msk0] "M" ((uint8_t)(1<<OCIE0A)) \
     : \
   ); \
 } \
-void TIMER0_COMPB_vect_bottom()
+void TIMER0_COMPA_vect_bottom()
 
 #endif // HAL_TEMP_TIMER_ISR

Marlin/src/HAL/AVR/u8g_com_HAL_AVR_sw_spi.cpp

@@ -88,7 +88,7 @@ void u8g_spiSend_sw_AVR_mode_0(uint8_t val) {
   volatile uint8_t *outData = u8g_outData,
                    *outClock = u8g_outClock;
   U8G_ATOMIC_START();
-  LOOP_L_N(i, 8) {
+  for (uint8_t i = 0; i < 8; ++i) {
     if (val & 0x80)
       *outData |= bitData;
     else
@@ -108,7 +108,7 @@ void u8g_spiSend_sw_AVR_mode_3(uint8_t val) {
   volatile uint8_t *outData = u8g_outData,
                    *outClock = u8g_outClock;
   U8G_ATOMIC_START();
-  LOOP_L_N(i, 8) {
+  for (uint8_t i = 0; i < 8; ++i) {
     *outClock &= bitNotClock;
     if (val & 0x80)
       *outData |= bitData;
@@ -120,7 +120,6 @@ void u8g_spiSend_sw_AVR_mode_3(uint8_t val) {
   U8G_ATOMIC_END();
 }
 
-
 #if ENABLED(FYSETC_MINI_12864)
   #define SPISEND_SW_AVR u8g_spiSend_sw_AVR_mode_3
 #else

Marlin/src/HAL/AVR/watchdog.cpp

@@ -1,70 +0,0 @@
-/**
- * Marlin 3D Printer Firmware
- * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
- *
- * Based on Sprinter and grbl.
- * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- *
- */
-#ifdef __AVR__
-
-#include "../../inc/MarlinConfig.h"
-
-#if ENABLED(USE_WATCHDOG)
-
-#include "watchdog.h"
-
-#include "../../MarlinCore.h"
-
-// Initialize watchdog with 8s timeout, if possible. Otherwise, make it 4s.
-void watchdog_init() {
-  #if ENABLED(WATCHDOG_DURATION_8S) && defined(WDTO_8S)
-    #define WDTO_NS WDTO_8S
-  #else
-    #define WDTO_NS WDTO_4S
-  #endif
-  #if ENABLED(WATCHDOG_RESET_MANUAL)
-    // Enable the watchdog timer, but only for the interrupt.
-    // Take care, as this requires the correct order of operation, with interrupts disabled.
-    // See the datasheet of any AVR chip for details.
-    wdt_reset();
-    cli();
-    _WD_CONTROL_REG = _BV(_WD_CHANGE_BIT) | _BV(WDE);
-    _WD_CONTROL_REG = _BV(WDIE) | (WDTO_NS & 0x07) | ((WDTO_NS & 0x08) << 2); // WDTO_NS directly does not work. bit 0-2 are consecutive in the register but the highest value bit is at bit 5
-                                                                              // So worked for up to WDTO_2S
-    sei();
-    wdt_reset();
-  #else
-    wdt_enable(WDTO_NS); // The function handles the upper bit correct.
-  #endif
-  //delay(10000); // test it!
-}
-
-//===========================================================================
-//=================================== ISR ===================================
-//===========================================================================
-
-// Watchdog timer interrupt, called if main program blocks >4sec and manual reset is enabled.
-#if ENABLED(WATCHDOG_RESET_MANUAL)
-  ISR(WDT_vect) {
-    sei();  // With the interrupt driven serial we need to allow interrupts.
-    SERIAL_ERROR_MSG(STR_WATCHDOG_FIRED);
-    minkill();  // interrupt-safe final kill and infinite loop
-  }
-#endif
-
-#endif // USE_WATCHDOG
-#endif // __AVR__

Marlin/src/HAL/DUE/HAL.cpp

@@ -1,7 +1,9 @@
 /**
  * Marlin 3D Printer Firmware
  * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
- * Copyright (c) 2016 Bob Cousins bobcousins42@googlemail.com
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -25,7 +27,7 @@
 #ifdef ARDUINO_ARCH_SAM
 
 #include "../../inc/MarlinConfig.h"
-#include "HAL.h"
+#include "../../MarlinCore.h"
 
 #include <Wire.h>
 #include "usb/usb_task.h"
@@ -34,39 +36,33 @@
 // Public Variables
 // ------------------------
 
-uint16_t HAL_adc_result;
+uint16_t MarlinHAL::adc_result;
 
 // ------------------------
 // Public functions
 // ------------------------
 
-TERN_(POSTMORTEM_DEBUGGING, extern void install_min_serial());
+#if ENABLED(POSTMORTEM_DEBUGGING)
+  extern void install_min_serial();
+#endif
 
-// HAL initialization task
-void HAL_init() {
-  // Initialize the USB stack
-  #if ENABLED(SDSUPPORT)
+void MarlinHAL::init() {
+  #if HAS_MEDIA
     OUT_WRITE(SDSS, HIGH);  // Try to set SDSS inactive before any other SPI users start up
   #endif
-  usb_task_init();
+  usb_task_init();          // Initialize the USB stack
   TERN_(POSTMORTEM_DEBUGGING, install_min_serial()); // Install the min serial handler
 }
 
-// HAL idle task
-void HAL_idletask() {
-  // Perform USB stack housekeeping
-  usb_task_idle();
+void MarlinHAL::init_board() {
+  #ifdef BOARD_INIT
+    BOARD_INIT();
+  #endif
 }
 
-// Disable interrupts
-void cli() { noInterrupts(); }
+void MarlinHAL::idletask() { usb_task_idle(); } // Perform USB stack housekeeping
 
-// Enable interrupts
-void sei() { interrupts(); }
-
-void HAL_clear_reset_source() { }
-
-uint8_t HAL_get_reset_source() {
+uint8_t MarlinHAL::get_reset_source() {
   switch ((RSTC->RSTC_SR >> 8) & 0x07) {
     case 0: return RST_POWER_ON;
     case 1: return RST_BACKUP;
@@ -77,13 +73,105 @@ uint8_t HAL_get_reset_source() {
   }
 }
 
-void HAL_reboot() { rstc_start_software_reset(RSTC); }
+void MarlinHAL::reboot() { rstc_start_software_reset(RSTC); }
 
-void _delay_ms(const int delay_ms) {
-  // Todo: port for Due?
-  delay(delay_ms);
+// ------------------------
+// Watchdog Timer
+// ------------------------
+
+#if ENABLED(USE_WATCHDOG)
+
+  // Initialize watchdog - On SAM3X, Watchdog was already configured
+  //  and enabled or disabled at startup, so no need to reconfigure it
+  //  here.
+  void MarlinHAL::watchdog_init() { WDT_Restart(WDT); } // Reset watchdog to start clean
+
+  // Reset watchdog. MUST be called at least every 4 seconds after the
+  // first watchdog_init or AVR will go into emergency procedures.
+  void MarlinHAL::watchdog_refresh() { watchdogReset(); }
+
+#endif
+
+// Override Arduino runtime to either config or disable the watchdog
+//
+// We need to configure the watchdog as soon as possible in the boot
+// process, because watchdog initialization at hardware reset on SAM3X8E
+// is unreliable, and there is risk of unintended resets if we delay
+// that initialization to a later time.
+void watchdogSetup() {
+
+  #if ENABLED(USE_WATCHDOG)
+
+    // 4 seconds timeout
+    uint32_t timeout = TERN(WATCHDOG_DURATION_8S, 8000, 4000);
+
+    // Calculate timeout value in WDT counter ticks: This assumes
+    // the slow clock is running at 32.768 kHz watchdog
+    // frequency is therefore 32768 / 128 = 256 Hz
+    timeout = (timeout << 8) / 1000;
+    if (timeout == 0)
+      timeout = 1;
+    else if (timeout > 0xFFF)
+      timeout = 0xFFF;
+
+    // We want to enable the watchdog with the specified timeout
+    uint32_t value =
+      WDT_MR_WDV(timeout) |               // With the specified timeout
+      WDT_MR_WDD(timeout) |               // and no invalid write window
+    #if !(SAMV70 || SAMV71 || SAME70 || SAMS70)
+      WDT_MR_WDRPROC   |                  // WDT fault resets processor only - We want
+                                          // to keep PIO controller state
+    #endif
+      WDT_MR_WDDBGHLT  |                  // WDT stops in debug state.
+      WDT_MR_WDIDLEHLT;                   // WDT stops in idle state.
+
+    #if ENABLED(WATCHDOG_RESET_MANUAL)
+      // We enable the watchdog timer, but only for the interrupt.
+
+      // Configure WDT to only trigger an interrupt
+      value |= WDT_MR_WDFIEN;             // Enable WDT fault interrupt.
+
+      // Disable WDT interrupt (just in case, to avoid triggering it!)
+      NVIC_DisableIRQ(WDT_IRQn);
+
+      // We NEED memory barriers to ensure Interrupts are actually disabled!
+      // ( https://dzone.com/articles/nvic-disabling-interrupts-on-arm-cortex-m-and-the )
+      __DSB();
+      __ISB();
+
+      // Initialize WDT with the given parameters
+      WDT_Enable(WDT, value);
+
+      // Configure and enable WDT interrupt.
+      NVIC_ClearPendingIRQ(WDT_IRQn);
+      NVIC_SetPriority(WDT_IRQn, 0); // Use highest priority, so we detect all kinds of lockups
+      NVIC_EnableIRQ(WDT_IRQn);
+
+    #else
+
+      // a WDT fault triggers a reset
+      value |= WDT_MR_WDRSTEN;
+
+      // Initialize WDT with the given parameters
+      WDT_Enable(WDT, value);
+
+    #endif
+
+    // Reset the watchdog
+    WDT_Restart(WDT);
+
+  #else
+
+    // Make sure to completely disable the Watchdog
+    WDT_Disable(WDT);
+
+  #endif
 }
 
+// ------------------------
+// Free Memory Accessor
+// ------------------------
+
 extern "C" {
   extern unsigned int _ebss; // end of bss section
 }
@@ -95,18 +183,9 @@ int freeMemory() {
 }
 
 // ------------------------
-// ADC
+// Serial Ports
 // ------------------------
 
-void HAL_adc_start_conversion(const uint8_t ch) {
-  HAL_adc_result = analogRead(ch);
-}
-
-uint16_t HAL_adc_get_result() {
-  // nop
-  return HAL_adc_result;
-}
-
 // Forward the default serial ports
 #if USING_HW_SERIAL0
   DefaultSerial1 MSerial0(false, Serial);

Marlin/src/HAL/DUE/HAL.h

@@ -1,9 +1,9 @@
 /**
  * Marlin 3D Printer Firmware
- *
  * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
- * Copyright (c) 2016 Bob Cousins bobcousins42@googlemail.com
- * Copyright (c) 2015-2016 Nico Tonnhofer wurstnase.reprap@gmail.com
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -32,12 +32,15 @@
 #include "../shared/math_32bit.h"
 #include "../shared/HAL_SPI.h"
 #include "fastio.h"
-#include "watchdog.h"
 
 #include <stdint.h>
 
 #include "../../core/serial_hook.h"
 
+// ------------------------
+// Serial ports
+// ------------------------
+
 typedef ForwardSerial1Class< decltype(Serial) > DefaultSerial1;
 typedef ForwardSerial1Class< decltype(Serial1) > DefaultSerial2;
 typedef ForwardSerial1Class< decltype(Serial2) > DefaultSerial3;
@@ -97,60 +100,38 @@ extern DefaultSerial4 MSerial3;
 #include "MarlinSerial.h"
 #include "MarlinSerialUSB.h"
 
-// On AVR this is in math.h?
-#define square(x) ((x)*(x))
+// ------------------------
+// Types
+// ------------------------
 
 typedef int8_t pin_t;
 
-#define SHARED_SERVOS HAS_SERVOS
-#define HAL_SERVO_LIB Servo
+#define SHARED_SERVOS HAS_SERVOS  // Use shared/servos.cpp
+
+class Servo;
+typedef Servo hal_servo_t;
 
 //
 // Interrupts
 //
-#define CRITICAL_SECTION_START()  uint32_t primask = __get_PRIMASK(); __disable_irq()
-#define CRITICAL_SECTION_END()    if (!primask) __enable_irq()
-#define ISRS_ENABLED() (!__get_PRIMASK())
-#define ENABLE_ISRS()  __enable_irq()
-#define DISABLE_ISRS() __disable_irq()
+#define sei() interrupts()
+#define cli() noInterrupts()
 
-void cli();                     // Disable interrupts
-void sei();                     // Enable interrupts
-
-void HAL_clear_reset_source();  // clear reset reason
-uint8_t HAL_get_reset_source(); // get reset reason
-
-void HAL_reboot();
+#define CRITICAL_SECTION_START()  const bool _irqon = hal.isr_state(); hal.isr_off()
+#define CRITICAL_SECTION_END()    if (_irqon) hal.isr_on()
 
 //
 // ADC
 //
-extern uint16_t HAL_adc_result;     // result of last ADC conversion
+#define HAL_ADC_VREF_MV   3300
+#define HAL_ADC_RESOLUTION  10
 
 #ifndef analogInputToDigitalPin
   #define analogInputToDigitalPin(p) ((p < 12U) ? (p) + 54U : -1)
 #endif
 
-#define HAL_ANALOG_SELECT(ch)
-
-inline void HAL_adc_init() {}//todo
-
-#define HAL_ADC_VREF         3.3
-#define HAL_ADC_RESOLUTION  10
-#define HAL_START_ADC(ch)   HAL_adc_start_conversion(ch)
-#define HAL_READ_ADC()      HAL_adc_result
-#define HAL_ADC_READY()     true
-
-void HAL_adc_start_conversion(const uint8_t ch);
-uint16_t HAL_adc_get_result();
-
 //
-// PWM
-//
-inline void set_pwm_duty(const pin_t pin, const uint16_t v, const uint16_t=255, const bool=false) { analogWrite(pin, v); }
-
-//
-// Pin Map
+// Pin Mapping for M42, M43, M226
 //
 #define GET_PIN_MAP_PIN(index) index
 #define GET_PIN_MAP_INDEX(pin) pin
@@ -159,27 +140,18 @@ inline void set_pwm_duty(const pin_t pin, const uint16_t v, const uint16_t=255,
 //
 // Tone
 //
-void toneInit();
 void tone(const pin_t _pin, const unsigned int frequency, const unsigned long duration=0);
 void noTone(const pin_t _pin);
 
-// Enable hooks into idle and setup for HAL
-#define HAL_IDLETASK 1
-void HAL_idletask();
-void HAL_init();
-
-//
-// Utility functions
-//
-void _delay_ms(const int delay);
+// ------------------------
+// Class Utilities
+// ------------------------
 
 #pragma GCC diagnostic push
 #if GCC_VERSION <= 50000
   #pragma GCC diagnostic ignored "-Wunused-function"
 #endif
 
-int freeMemory();
-
 #pragma GCC diagnostic pop
 
 #ifdef __cplusplus
@@ -189,3 +161,73 @@ char *dtostrf(double __val, signed char __width, unsigned char __prec, char *__s
 #ifdef __cplusplus
   }
 #endif
+
+// Return free RAM between end of heap (or end bss) and whatever is current
+int freeMemory();
+
+// ------------------------
+// MarlinHAL Class
+// ------------------------
+
+class MarlinHAL {
+public:
+
+  // Earliest possible init, before setup()
+  MarlinHAL() {}
+
+  // Watchdog
+  static void watchdog_init()    IF_DISABLED(USE_WATCHDOG, {});
+  static void watchdog_refresh() IF_DISABLED(USE_WATCHDOG, {});
+
+  static void init();          // Called early in setup()
+  static void init_board();    // Called less early in setup()
+  static void reboot();        // Restart the firmware
+
+  // Interrupts
+  static bool isr_state() { return !__get_PRIMASK(); }
+  static void isr_on()  { __enable_irq(); }
+  static void isr_off() { __disable_irq(); }
+
+  static void delay_ms(const int ms) { delay(ms); }
+
+  // Tasks, called from idle()
+  static void idletask();
+
+  // Reset
+  static uint8_t get_reset_source();
+  static void clear_reset_source() {}
+
+  // Free SRAM
+  static int freeMemory() { return ::freeMemory(); }
+
+  //
+  // ADC Methods
+  //
+
+  static uint16_t adc_result;
+
+  // Called by Temperature::init once at startup
+  static void adc_init() {}
+
+  // Called by Temperature::init for each sensor at startup
+  static void adc_enable(const uint8_t /*ch*/) {}
+
+  // Begin ADC sampling on the given channel. Called from Temperature::isr!
+  static void adc_start(const uint8_t ch) { adc_result = analogRead(ch); }
+
+  // Is the ADC ready for reading?
+  static bool adc_ready() { return true; }
+
+  // The current value of the ADC register
+  static uint16_t adc_value() { return adc_result; }
+
+  /**
+   * Set the PWM duty cycle for the pin to the given value.
+   * No inverting the duty cycle in this HAL.
+   * No changing the maximum size of the provided value to enable finer PWM duty control in this HAL.
+   */
+  static void set_pwm_duty(const pin_t pin, const uint16_t v, const uint16_t=255, const bool=false) {
+    analogWrite(pin, v);
+  }
+
+};

Marlin/src/HAL/DUE/HAL_SPI.cpp

@@ -31,8 +31,6 @@
 
 /**
  * HAL for Arduino Due and compatible (SAM3X8E)
- *
- * For ARDUINO_ARCH_SAM
  */
 
 #ifdef ARDUINO_ARCH_SAM
@@ -44,7 +42,7 @@
 // Public functions
 // ------------------------
 
-#if EITHER(DUE_SOFTWARE_SPI, FORCE_SOFT_SPI)
+#if ANY(DUE_SOFTWARE_SPI, FORCE_SOFT_SPI)
 
   // ------------------------
   // Software SPI
@@ -249,12 +247,12 @@
       b <<= 1; // little setup time
 
       WRITE(SD_SCK_PIN, HIGH);
-      DELAY_NS(spiDelayNS);
+      DELAY_NS_VAR(spiDelayNS);
 
       b |= (READ(SD_MISO_PIN) != 0);
 
       WRITE(SD_SCK_PIN, LOW);
-      DELAY_NS(spiDelayNS);
+      DELAY_NS_VAR(spiDelayNS);
     } while (--bits);
     return b;
   }

Marlin/src/HAL/DUE/InterruptVectors.cpp

@@ -41,7 +41,7 @@
    practice, we need alignment to 256 bytes to make this work in all
    cases */
 __attribute__ ((aligned(256)))
-static DeviceVectors ram_tab = { nullptr };
+static DeviceVectors ram_tab[61] = { nullptr };
 
 /**
  * This function checks if the exception/interrupt table is already in SRAM or not.

Marlin/src/HAL/DUE/MarlinSerial.cpp

@@ -406,7 +406,7 @@ size_t MarlinSerial<Cfg>::write(const uint8_t c) {
     const uint8_t i = (tx_buffer.head + 1) & (Cfg::TX_SIZE - 1);
 
     // If global interrupts are disabled (as the result of being called from an ISR)...
-    if (!ISRS_ENABLED()) {
+    if (!hal.isr_state()) {
 
       // Make room by polling if it is possible to transmit, and do so!
       while (i == tx_buffer.tail) {
@@ -454,7 +454,7 @@ void MarlinSerial<Cfg>::flushTX() {
     if (!_written) return;
 
     // If global interrupts are disabled (as the result of being called from an ISR)...
-    if (!ISRS_ENABLED()) {
+    if (!hal.isr_state()) {
 
       // Wait until everything was transmitted - We must do polling, as interrupts are disabled
       while (tx_buffer.head != tx_buffer.tail || !(HWUART->UART_SR & UART_SR_TXEMPTY)) {
@@ -474,7 +474,6 @@ void MarlinSerial<Cfg>::flushTX() {
   }
 }
 
-
 // If not using the USB port as serial port
 #if defined(SERIAL_PORT) && SERIAL_PORT >= 0
   template class MarlinSerial< MarlinSerialCfg<SERIAL_PORT> >;

Marlin/src/HAL/DUE/MarlinSerial.h

@@ -30,6 +30,7 @@
 #include <WString.h>
 
 #include "../../inc/MarlinConfigPre.h"
+#include "../../core/types.h"
 #include "../../core/serial_hook.h"
 
 // Define constants and variables for buffering incoming serial data.  We're
@@ -52,10 +53,6 @@
 //  #error "TX_BUFFER_SIZE must be 0, a power of 2 greater than 1, and no greater than 256."
 //#endif
 
-// Templated type selector
-template<bool b, typename T, typename F> struct TypeSelector { typedef T type;} ;
-template<typename T, typename F> struct TypeSelector<false, T, F> { typedef F type; };
-
 // Templated structure wrapper
 template<typename S, unsigned int addr> struct StructWrapper {
   constexpr StructWrapper(int) {}
@@ -76,7 +73,7 @@ protected:
   static constexpr int HWUART_IRQ_ID = IRQ_IDS[Cfg::PORT];
 
   // Base size of type on buffer size
-  typedef typename TypeSelector<(Cfg::RX_SIZE>256), uint16_t, uint8_t>::type ring_buffer_pos_t;
+  typedef uvalue_t(Cfg::RX_SIZE - 1) ring_buffer_pos_t;
 
   struct ring_buffer_r {
     volatile ring_buffer_pos_t head, tail;
@@ -118,7 +115,7 @@ public:
   static size_t write(const uint8_t c);
   static void flushTX();
 
-  static inline bool emergency_parser_enabled() { return Cfg::EMERGENCYPARSER; }
+  static bool emergency_parser_enabled() { return Cfg::EMERGENCYPARSER; }
 
   FORCE_INLINE static uint8_t dropped() { return Cfg::DROPPED_RX ? rx_dropped_bytes : 0; }
   FORCE_INLINE static uint8_t buffer_overruns() { return Cfg::RX_OVERRUNS ? rx_buffer_overruns : 0; }

Marlin/src/HAL/DUE/MarlinSerialUSB.cpp

@@ -41,7 +41,7 @@ extern "C" {
   int udi_cdc_getc();
   bool udi_cdc_is_tx_ready();
   int udi_cdc_putc(int value);
-};
+}
 
 // Pending character
 static int pending_char = -1;

Marlin/src/HAL/DUE/MinSerial.cpp

@@ -25,7 +25,7 @@
 
 #if ENABLED(POSTMORTEM_DEBUGGING)
 
-#include "../shared/HAL_MinSerial.h"
+#include "../shared/MinSerial.h"
 
 #include <stdarg.h>
 
@@ -73,18 +73,18 @@ void install_min_serial() {
 }
 
 #if DISABLED(DYNAMIC_VECTORTABLE)
-extern "C" {
-  __attribute__((naked)) void JumpHandler_ASM() {
-    __asm__ __volatile__ (
-      "b CommonHandler_ASM\n"
-    );
+  extern "C" {
+    __attribute__((naked)) void JumpHandler_ASM() {
+      __asm__ __volatile__ (
+        "b CommonHandler_ASM\n"
+      );
+    }
+    void __attribute__((naked, alias("JumpHandler_ASM"))) HardFault_Handler();
+    void __attribute__((naked, alias("JumpHandler_ASM"))) BusFault_Handler();
+    void __attribute__((naked, alias("JumpHandler_ASM"))) UsageFault_Handler();
+    void __attribute__((naked, alias("JumpHandler_ASM"))) MemManage_Handler();
+    void __attribute__((naked, alias("JumpHandler_ASM"))) NMI_Handler();
   }
-  void __attribute__((naked, alias("JumpHandler_ASM"))) HardFault_Handler();
-  void __attribute__((naked, alias("JumpHandler_ASM"))) BusFault_Handler();
-  void __attribute__((naked, alias("JumpHandler_ASM"))) UsageFault_Handler();
-  void __attribute__((naked, alias("JumpHandler_ASM"))) MemManage_Handler();
-  void __attribute__((naked, alias("JumpHandler_ASM"))) NMI_Handler();
-}
 #endif
 
 #endif // POSTMORTEM_DEBUGGING

Marlin/src/HAL/DUE/Servo.cpp

@@ -47,12 +47,12 @@
 #include "../shared/servo.h"
 #include "../shared/servo_private.h"
 
-static volatile int8_t Channel[_Nbr_16timers];              // counter for the servo being pulsed for each timer (or -1 if refresh interval)
+static Flags<_Nbr_16timers> DisablePending; // ISR should disable the timer at the next timer reset
 
 // ------------------------
 /// Interrupt handler for the TC0 channel 1.
 // ------------------------
-void Servo_Handler(timer16_Sequence_t timer, Tc *pTc, uint8_t channel);
+void Servo_Handler(const timer16_Sequence_t, Tc*, const uint8_t);
 
 #ifdef _useTimer1
   void HANDLER_FOR_TIMER1() { Servo_Handler(_timer1, TC_FOR_TIMER1, CHANNEL_FOR_TIMER1); }
@@ -70,88 +70,92 @@ void Servo_Handler(timer16_Sequence_t timer, Tc *pTc, uint8_t channel);
   void HANDLER_FOR_TIMER5() { Servo_Handler(_timer5, TC_FOR_TIMER5, CHANNEL_FOR_TIMER5); }
 #endif
 
-void Servo_Handler(timer16_Sequence_t timer, Tc *tc, uint8_t channel) {
-  // clear interrupt
-  tc->TC_CHANNEL[channel].TC_SR;
-  if (Channel[timer] < 0)
-    tc->TC_CHANNEL[channel].TC_CCR |= TC_CCR_SWTRG; // channel set to -1 indicated that refresh interval completed so reset the timer
-  else if (SERVO_INDEX(timer, Channel[timer]) < ServoCount && SERVO(timer, Channel[timer]).Pin.isActive)
-    extDigitalWrite(SERVO(timer, Channel[timer]).Pin.nbr, LOW); // pulse this channel low if activated
+void Servo_Handler(const timer16_Sequence_t timer, Tc *tc, const uint8_t channel) {
+  static int8_t Channel[_Nbr_16timers];                               // Servo counters to pulse (or -1 for refresh interval)
+  int8_t cho = Channel[timer];                                        // Handle the prior Channel[timer] first
+  if (cho < 0) {                                                      // Channel -1 indicates the refresh interval completed...
+    tc->TC_CHANNEL[channel].TC_CCR |= TC_CCR_SWTRG;                   // ...so reset the timer
+    if (DisablePending[timer]) {
+      // Disabling only after the full servo period expires prevents
+      // pulses being too close together if immediately re-enabled.
+      DisablePending.clear(timer);
+      TC_Stop(tc, channel);
+      tc->TC_CHANNEL[channel].TC_SR;                                  // clear interrupt
+      return;
+    }
+  }
+  else if (SERVO_INDEX(timer, cho) < ServoCount)                      // prior channel handled?
+    extDigitalWrite(SERVO(timer, cho).Pin.nbr, LOW);                  // pulse the prior channel LOW
 
-  Channel[timer]++;    // increment to the next channel
-  if (SERVO_INDEX(timer, Channel[timer]) < ServoCount && Channel[timer] < SERVOS_PER_TIMER) {
-    tc->TC_CHANNEL[channel].TC_RA = tc->TC_CHANNEL[channel].TC_CV + SERVO(timer,Channel[timer]).ticks;
-    if (SERVO(timer,Channel[timer]).Pin.isActive)    // check if activated
-      extDigitalWrite(SERVO(timer, Channel[timer]).Pin.nbr, HIGH); // its an active channel so pulse it high
+  Channel[timer] = ++cho;                                             // go to the next channel (or 0)
+  if (cho < SERVOS_PER_TIMER && SERVO_INDEX(timer, cho) < ServoCount) {
+    tc->TC_CHANNEL[channel].TC_RA = tc->TC_CHANNEL[channel].TC_CV + SERVO(timer, cho).ticks;
+    if (SERVO(timer, cho).Pin.isActive)                               // activated?
+      extDigitalWrite(SERVO(timer, cho).Pin.nbr, HIGH);               // yes: pulse HIGH
   }
   else {
     // finished all channels so wait for the refresh period to expire before starting over
-    tc->TC_CHANNEL[channel].TC_RA =
-      tc->TC_CHANNEL[channel].TC_CV < usToTicks(REFRESH_INTERVAL) - 4
-        ? (unsigned int)usToTicks(REFRESH_INTERVAL) // allow a few ticks to ensure the next OCR1A not missed
-        : tc->TC_CHANNEL[channel].TC_CV + 4;        // at least REFRESH_INTERVAL has elapsed
-    Channel[timer] = -1; // this will get incremented at the end of the refresh period to start again at the first channel
+    const unsigned int cval = tc->TC_CHANNEL[channel].TC_CV + 128 / (SERVO_TIMER_PRESCALER), // allow 128 cycles to ensure the next CV not missed
+                       ival = (unsigned int)usToTicks(REFRESH_INTERVAL); // at least REFRESH_INTERVAL has elapsed
+    tc->TC_CHANNEL[channel].TC_RA = max(cval, ival);
+
+    Channel[timer] = -1;                                              // reset the timer CCR on the next call
   }
+
+  tc->TC_CHANNEL[channel].TC_SR;                                      // clear interrupt
 }
 
 static void _initISR(Tc *tc, uint32_t channel, uint32_t id, IRQn_Type irqn) {
   pmc_enable_periph_clk(id);
   TC_Configure(tc, channel,
-    TC_CMR_TCCLKS_TIMER_CLOCK3 | // MCK/32
-    TC_CMR_WAVE |                // Waveform mode
-    TC_CMR_WAVSEL_UP_RC );       // Counter running up and reset when equals to RC
+      TC_CMR_WAVE                   // Waveform mode
+    | TC_CMR_WAVSEL_UP_RC           // Counter running up and reset when equal to RC
+    | (SERVO_TIMER_PRESCALER ==   2 ? TC_CMR_TCCLKS_TIMER_CLOCK1 : 0) // MCK/2
+    | (SERVO_TIMER_PRESCALER ==   8 ? TC_CMR_TCCLKS_TIMER_CLOCK2 : 0) // MCK/8
+    | (SERVO_TIMER_PRESCALER ==  32 ? TC_CMR_TCCLKS_TIMER_CLOCK3 : 0) // MCK/32
+    | (SERVO_TIMER_PRESCALER == 128 ? TC_CMR_TCCLKS_TIMER_CLOCK4 : 0) // MCK/128
+  );
 
-  /* 84MHz, MCK/32, for 1.5ms: 3937 */
-  TC_SetRA(tc, channel, 2625); // 1ms
+  // Wait 1ms before the first ISR
+  TC_SetRA(tc, channel, (F_CPU) / (SERVO_TIMER_PRESCALER) / 1000UL); // 1ms
 
-  /* Configure and enable interrupt */
+  // Configure and enable interrupt
   NVIC_EnableIRQ(irqn);
-  // TC_IER_CPAS: RA Compare
-  tc->TC_CHANNEL[channel].TC_IER = TC_IER_CPAS;
+  tc->TC_CHANNEL[channel].TC_IER = TC_IER_CPAS; // TC_IER_CPAS: RA Compare
 
   // Enables the timer clock and performs a software reset to start the counting
   TC_Start(tc, channel);
 }
 
-void initISR(timer16_Sequence_t timer) {
-  #ifdef _useTimer1
-    if (timer == _timer1)
-      _initISR(TC_FOR_TIMER1, CHANNEL_FOR_TIMER1, ID_TC_FOR_TIMER1, IRQn_FOR_TIMER1);
-  #endif
-  #ifdef _useTimer2
-    if (timer == _timer2)
-      _initISR(TC_FOR_TIMER2, CHANNEL_FOR_TIMER2, ID_TC_FOR_TIMER2, IRQn_FOR_TIMER2);
-  #endif
-  #ifdef _useTimer3
-    if (timer == _timer3)
-      _initISR(TC_FOR_TIMER3, CHANNEL_FOR_TIMER3, ID_TC_FOR_TIMER3, IRQn_FOR_TIMER3);
-  #endif
-  #ifdef _useTimer4
-    if (timer == _timer4)
-      _initISR(TC_FOR_TIMER4, CHANNEL_FOR_TIMER4, ID_TC_FOR_TIMER4, IRQn_FOR_TIMER4);
-  #endif
-  #ifdef _useTimer5
-    if (timer == _timer5)
-      _initISR(TC_FOR_TIMER5, CHANNEL_FOR_TIMER5, ID_TC_FOR_TIMER5, IRQn_FOR_TIMER5);
-  #endif
+void initISR(const timer16_Sequence_t timer_index) {
+  CRITICAL_SECTION_START();
+  const bool disable_soon = DisablePending[timer_index];
+  DisablePending.clear(timer_index);
+  CRITICAL_SECTION_END();
+
+  if (!disable_soon) switch (timer_index) {
+    default: break;
+    #ifdef _useTimer1
+      case _timer1: return _initISR(TC_FOR_TIMER1, CHANNEL_FOR_TIMER1, ID_TC_FOR_TIMER1, IRQn_FOR_TIMER1);
+    #endif
+    #ifdef _useTimer2
+      case _timer2: return _initISR(TC_FOR_TIMER2, CHANNEL_FOR_TIMER2, ID_TC_FOR_TIMER2, IRQn_FOR_TIMER2);
+    #endif
+    #ifdef _useTimer3
+      case _timer3: return _initISR(TC_FOR_TIMER3, CHANNEL_FOR_TIMER3, ID_TC_FOR_TIMER3, IRQn_FOR_TIMER3);
+    #endif
+    #ifdef _useTimer4
+      case _timer4: return _initISR(TC_FOR_TIMER4, CHANNEL_FOR_TIMER4, ID_TC_FOR_TIMER4, IRQn_FOR_TIMER4);
+    #endif
+    #ifdef _useTimer5
+      case _timer5: return _initISR(TC_FOR_TIMER5, CHANNEL_FOR_TIMER5, ID_TC_FOR_TIMER5, IRQn_FOR_TIMER5);
+    #endif
+  }
 }
 
-void finISR(timer16_Sequence_t) {
-  #ifdef _useTimer1
-    TC_Stop(TC_FOR_TIMER1, CHANNEL_FOR_TIMER1);
-  #endif
-  #ifdef _useTimer2
-    TC_Stop(TC_FOR_TIMER2, CHANNEL_FOR_TIMER2);
-  #endif
-  #ifdef _useTimer3
-    TC_Stop(TC_FOR_TIMER3, CHANNEL_FOR_TIMER3);
-  #endif
-  #ifdef _useTimer4
-    TC_Stop(TC_FOR_TIMER4, CHANNEL_FOR_TIMER4);
-  #endif
-  #ifdef _useTimer5
-    TC_Stop(TC_FOR_TIMER5, CHANNEL_FOR_TIMER5);
-  #endif
+void finISR(const timer16_Sequence_t timer_index) {
+  // Timer is disabled from the ISR, to ensure proper final pulse length.
+  DisablePending.set(timer_index);
 }
 
 #endif // HAS_SERVOS

Marlin/src/HAL/DUE/ServoTimers.h

@@ -37,7 +37,7 @@
 #define _useTimer5
 
 #define TRIM_DURATION             2   // compensation ticks to trim adjust for digitalWrite delays
-#define SERVO_TIMER_PRESCALER     32  // timer prescaler
+#define SERVO_TIMER_PRESCALER     2   // timer prescaler
 
 /*
   TC0, chan 0 => TC0_Handler

Marlin/src/HAL/DUE/Tone.cpp

@@ -35,7 +35,7 @@
 static pin_t tone_pin;
 volatile static int32_t toggles;
 
-void tone(const pin_t _pin, const unsigned int frequency, const unsigned long duration) {
+void tone(const pin_t _pin, const unsigned int frequency, const unsigned long duration/*=0*/) {
   tone_pin = _pin;
   toggles = 2 * frequency * duration / 1000;
   HAL_timer_start(MF_TIMER_TONE, 2 * frequency);

Marlin/src/HAL/DUE/dogm/u8g_com_HAL_DUE_sw_spi_shared.cpp

@@ -81,7 +81,7 @@ Pio *SCK_pPio, *MOSI_pPio;
 uint32_t SCK_dwMask, MOSI_dwMask;
 
 void u8g_spiSend_sw_DUE_mode_0(uint8_t val) { // 3MHz
-  LOOP_L_N(i, 8) {
+  for (uint8_t i = 0; i < 8; ++i) {
     if (val & 0x80)
       MOSI_pPio->PIO_SODR = MOSI_dwMask;
     else
@@ -95,7 +95,7 @@ void u8g_spiSend_sw_DUE_mode_0(uint8_t val) { // 3MHz
 }
 
 void u8g_spiSend_sw_DUE_mode_3(uint8_t val) { // 3.5MHz
-  LOOP_L_N(i, 8) {
+  for (uint8_t i = 0; i < 8; ++i) {
     SCK_pPio->PIO_CODR = SCK_dwMask;
     DELAY_NS(50);
     if (val & 0x80)

Marlin/src/HAL/DUE/eeprom_flash.cpp

@@ -1,10 +1,9 @@
 /**
  * Marlin 3D Printer Firmware
- *
  * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
- * Copyright (c) 2016 Bob Cousins bobcousins42@googlemail.com
- * Copyright (c) 2015-2016 Nico Tonnhofer wurstnase.reprap@gmail.com
- * Copyright (c) 2016 Victor Perez victor_pv@hotmail.com
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -199,8 +198,7 @@ static bool ee_PageWrite(uint16_t page, const void *data) {
   for (i = 0; i <PageSize >> 2; i++)
     pageContents[i] = (((uint32_t*)data)[i]) | (~(pageContents[i] ^ ((uint32_t*)data)[i]));
 
-  DEBUG_ECHO_START();
-  DEBUG_ECHOLNPGM("EEPROM PageWrite   ", page);
+  DEBUG_ECHO_MSG("EEPROM PageWrite   ", page);
   DEBUG_ECHOLNPGM(" in FLASH address ", (uint32_t)addrflash);
   DEBUG_ECHOLNPGM(" base address     ", (uint32_t)getFlashStorage(0));
   DEBUG_FLUSH();
@@ -245,8 +243,7 @@ static bool ee_PageWrite(uint16_t page, const void *data) {
     // Reenable interrupts
     __enable_irq();
 
-    DEBUG_ECHO_START();
-    DEBUG_ECHOLNPGM("EEPROM Unlock failure for page ", page);
+    DEBUG_ECHO_MSG("EEPROM Unlock failure for page ", page);
     return false;
   }
 
@@ -270,8 +267,7 @@ static bool ee_PageWrite(uint16_t page, const void *data) {
     // Reenable interrupts
     __enable_irq();
 
-    DEBUG_ECHO_START();
-    DEBUG_ECHOLNPGM("EEPROM Write failure for page ", page);
+    DEBUG_ECHO_MSG("EEPROM Write failure for page ", page);
 
     return false;
   }
@@ -286,8 +282,7 @@ static bool ee_PageWrite(uint16_t page, const void *data) {
   if (memcmp(getFlashStorage(page),data,PageSize)) {
 
     #ifdef EE_EMU_DEBUG
-      DEBUG_ECHO_START();
-      DEBUG_ECHOLNPGM("EEPROM Verify Write failure for page ", page);
+      DEBUG_ECHO_MSG("EEPROM Verify Write failure for page ", page);
 
       ee_Dump( page, (uint32_t *)addrflash);
       ee_Dump(-page, data);
@@ -296,7 +291,7 @@ static bool ee_PageWrite(uint16_t page, const void *data) {
       uint32_t *p1 = (uint32_t*)addrflash;
       uint32_t *p2 = (uint32_t*)data;
       int count = 0;
-      for (i =0; i<PageSize >> 2; i++) {
+      for (i = 0; i < PageSize >> 2; i++) {
         if (p1[i] != p2[i]) {
           uint32_t delta = p1[i] ^ p2[i];
           while (delta) {
@@ -325,8 +320,7 @@ static bool ee_PageErase(uint16_t page) {
   uint16_t i;
   uint32_t addrflash = uint32_t(getFlashStorage(page));
 
-  DEBUG_ECHO_START();
-  DEBUG_ECHOLNPGM("EEPROM PageErase  ", page);
+  DEBUG_ECHO_MSG("EEPROM PageErase  ", page);
   DEBUG_ECHOLNPGM(" in FLASH address ", (uint32_t)addrflash);
   DEBUG_ECHOLNPGM(" base address     ", (uint32_t)getFlashStorage(0));
   DEBUG_FLUSH();
@@ -370,8 +364,7 @@ static bool ee_PageErase(uint16_t page) {
     // Reenable interrupts
     __enable_irq();
 
-    DEBUG_ECHO_START();
-    DEBUG_ECHOLNPGM("EEPROM Unlock failure for page ",page);
+    DEBUG_ECHO_MSG("EEPROM Unlock failure for page ",page);
 
     return false;
   }
@@ -394,8 +387,7 @@ static bool ee_PageErase(uint16_t page) {
     // Reenable interrupts
     __enable_irq();
 
-    DEBUG_ECHO_START();
-    DEBUG_ECHOLNPGM("EEPROM Erase failure for page ",page);
+    DEBUG_ECHO_MSG("EEPROM Erase failure for page ",page);
 
     return false;
   }
@@ -410,8 +402,7 @@ static bool ee_PageErase(uint16_t page) {
   uint32_t * aligned_src = (uint32_t *) addrflash;
   for (i = 0; i < PageSize >> 2; i++) {
     if (*aligned_src++ != 0xFFFFFFFF) {
-      DEBUG_ECHO_START();
-      DEBUG_ECHOLNPGM("EEPROM Verify Erase failure for page ",page);
+      DEBUG_ECHO_MSG("EEPROM Verify Erase failure for page ",page);
       ee_Dump(page, (uint32_t *)addrflash);
       return false;
     }
@@ -921,8 +912,7 @@ static void ee_Init() {
   // If all groups seem to be used, default to first group
   if (curGroup >= GroupCount) curGroup = 0;
 
-  DEBUG_ECHO_START();
-  DEBUG_ECHOLNPGM("EEPROM Current Group: ",curGroup);
+  DEBUG_ECHO_MSG("EEPROM Current Group: ",curGroup);
   DEBUG_FLUSH();
 
   // Now, validate that all the other group pages are empty
@@ -931,8 +921,7 @@ static void ee_Init() {
 
     for (int page = 0; page < PagesPerGroup; page++) {
       if (!ee_IsPageClean(grp * PagesPerGroup + page)) {
-        DEBUG_ECHO_START();
-        DEBUG_ECHOLNPGM("EEPROM Page ", page, " not clean on group ", grp);
+        DEBUG_ECHO_MSG("EEPROM Page ", page, " not clean on group ", grp);
         DEBUG_FLUSH();
         ee_PageErase(grp * PagesPerGroup + page);
       }
@@ -948,15 +937,13 @@ static void ee_Init() {
     }
   }
 
-  DEBUG_ECHO_START();
-  DEBUG_ECHOLNPGM("EEPROM Active page: ", curPage);
+  DEBUG_ECHO_MSG("EEPROM Active page: ", curPage);
   DEBUG_FLUSH();
 
   // Make sure the pages following the first clean one are also clean
   for (int page = curPage + 1; page < PagesPerGroup; page++) {
     if (!ee_IsPageClean(curGroup * PagesPerGroup + page)) {
-      DEBUG_ECHO_START();
-      DEBUG_ECHOLNPGM("EEPROM Page ", page, " not clean on active group ", curGroup);
+      DEBUG_ECHO_MSG("EEPROM Page ", page, " not clean on active group ", curGroup);
       DEBUG_FLUSH();
       ee_Dump(curGroup * PagesPerGroup + page, getFlashStorage(curGroup * PagesPerGroup + page));
       ee_PageErase(curGroup * PagesPerGroup + page);

Marlin/src/HAL/DUE/eeprom_wired.cpp

@@ -1,10 +1,9 @@
 /**
  * Marlin 3D Printer Firmware
- *
  * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
- * Copyright (c) 2016 Bob Cousins bobcousins42@googlemail.com
- * Copyright (c) 2015-2016 Nico Tonnhofer wurstnase.reprap@gmail.com
- * Copyright (c) 2016 Victor Perez victor_pv@hotmail.com
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by

Marlin/src/HAL/DUE/endstop_interrupts.h

@@ -47,27 +47,33 @@ void endstop_ISR() { endstops.update(); }
 
 void setup_endstop_interrupts() {
   #define _ATTACH(P) attachInterrupt(digitalPinToInterrupt(P), endstop_ISR, CHANGE)
-  TERN_(HAS_X_MAX, _ATTACH(X_MAX_PIN));
-  TERN_(HAS_X_MIN, _ATTACH(X_MIN_PIN));
-  TERN_(HAS_Y_MAX, _ATTACH(Y_MAX_PIN));
-  TERN_(HAS_Y_MIN, _ATTACH(Y_MIN_PIN));
-  TERN_(HAS_Z_MAX, _ATTACH(Z_MAX_PIN));
-  TERN_(HAS_Z_MIN, _ATTACH(Z_MIN_PIN));
-  TERN_(HAS_X2_MAX, _ATTACH(X2_MAX_PIN));
-  TERN_(HAS_X2_MIN, _ATTACH(X2_MIN_PIN));
-  TERN_(HAS_Y2_MAX, _ATTACH(Y2_MAX_PIN));
-  TERN_(HAS_Y2_MIN, _ATTACH(Y2_MIN_PIN));
-  TERN_(HAS_Z2_MAX, _ATTACH(Z2_MAX_PIN));
-  TERN_(HAS_Z2_MIN, _ATTACH(Z2_MIN_PIN));
-  TERN_(HAS_Z3_MAX, _ATTACH(Z3_MAX_PIN));
-  TERN_(HAS_Z3_MIN, _ATTACH(Z3_MIN_PIN));
-  TERN_(HAS_Z4_MAX, _ATTACH(Z4_MAX_PIN));
-  TERN_(HAS_Z4_MIN, _ATTACH(Z4_MIN_PIN));
+  TERN_(USE_X_MAX, _ATTACH(X_MAX_PIN));
+  TERN_(USE_X_MIN, _ATTACH(X_MIN_PIN));
+  TERN_(USE_Y_MAX, _ATTACH(Y_MAX_PIN));
+  TERN_(USE_Y_MIN, _ATTACH(Y_MIN_PIN));
+  TERN_(USE_Z_MAX, _ATTACH(Z_MAX_PIN));
+  TERN_(USE_Z_MIN, _ATTACH(Z_MIN_PIN));
+  TERN_(USE_X2_MAX, _ATTACH(X2_MAX_PIN));
+  TERN_(USE_X2_MIN, _ATTACH(X2_MIN_PIN));
+  TERN_(USE_Y2_MAX, _ATTACH(Y2_MAX_PIN));
+  TERN_(USE_Y2_MIN, _ATTACH(Y2_MIN_PIN));
+  TERN_(USE_Z2_MAX, _ATTACH(Z2_MAX_PIN));
+  TERN_(USE_Z2_MIN, _ATTACH(Z2_MIN_PIN));
+  TERN_(USE_Z3_MAX, _ATTACH(Z3_MAX_PIN));
+  TERN_(USE_Z3_MIN, _ATTACH(Z3_MIN_PIN));
+  TERN_(USE_Z4_MAX, _ATTACH(Z4_MAX_PIN));
+  TERN_(USE_Z4_MIN, _ATTACH(Z4_MIN_PIN));
   TERN_(HAS_Z_MIN_PROBE_PIN, _ATTACH(Z_MIN_PROBE_PIN));
-  TERN_(HAS_I_MAX, _ATTACH(I_MAX_PIN));
-  TERN_(HAS_I_MIN, _ATTACH(I_MIN_PIN));
-  TERN_(HAS_J_MAX, _ATTACH(J_MAX_PIN));
-  TERN_(HAS_J_MIN, _ATTACH(J_MIN_PIN));
-  TERN_(HAS_K_MAX, _ATTACH(K_MAX_PIN));
-  TERN_(HAS_K_MIN, _ATTACH(K_MIN_PIN));
+  TERN_(USE_I_MAX, _ATTACH(I_MAX_PIN));
+  TERN_(USE_I_MIN, _ATTACH(I_MIN_PIN));
+  TERN_(USE_J_MAX, _ATTACH(J_MAX_PIN));
+  TERN_(USE_J_MIN, _ATTACH(J_MIN_PIN));
+  TERN_(USE_K_MAX, _ATTACH(K_MAX_PIN));
+  TERN_(USE_K_MIN, _ATTACH(K_MIN_PIN));
+  TERN_(USE_U_MAX, _ATTACH(U_MAX_PIN));
+  TERN_(USE_U_MIN, _ATTACH(U_MIN_PIN));
+  TERN_(USE_V_MAX, _ATTACH(V_MAX_PIN));
+  TERN_(USE_V_MIN, _ATTACH(V_MIN_PIN));
+  TERN_(USE_W_MAX, _ATTACH(W_MAX_PIN));
+  TERN_(USE_W_MIN, _ATTACH(W_MIN_PIN));
 }

Marlin/src/HAL/DUE/fastio.h

@@ -189,12 +189,12 @@
  */
 
 // UART
-#define RXD        DIO0
-#define TXD        DIO1
+#define RXD        0
+#define TXD        1
 
 // TWI (I2C)
-#define SCL        DIO21
-#define SDA        DIO20
+#define SCL        21
+#define SDA        20
 
 /**
  * pins

Marlin/src/HAL/DUE/fastio/G2_PWM.cpp

@@ -25,7 +25,7 @@
  * is NOT used to directly toggle pins. The ISR writes to the pin assigned to
  * that interrupt.
  *
- * All PWMs use the same repetition rate.  The G2 needs about 10KHz min in order to
+ * All PWMs use the same repetition rate.  The G2 needs about 10kHz min in order to
  * not have obvious ripple on the Vref signals.
  *
  * The data structures are setup to minimize the computation done by the ISR which

Marlin/src/HAL/DUE/fastio/G2_PWM.h

@@ -49,7 +49,6 @@ extern volatile uint32_t *SODR_A, *SODR_B, *CODR_A, *CODR_B;
 
 #define PWM_MAP_INIT_ROW(IO,ZZ) { ZZ == 'A' ? SODR_A : SODR_B,  ZZ == 'A' ? CODR_A : CODR_B, 1 << _PIN(IO) }
 
-
 #define PWM_MAP_INIT {  PWM_MAP_INIT_ROW(MOTOR_CURRENT_PWM_X_PIN, 'B'), \
                         PWM_MAP_INIT_ROW(MOTOR_CURRENT_PWM_Y_PIN, 'B'), \
                         PWM_MAP_INIT_ROW(MOTOR_CURRENT_PWM_Z_PIN, 'B'), \
@@ -63,7 +62,7 @@ extern PWM_map ISR_table[NUM_PWMS];
 extern uint32_t motor_current_setting[3];
 
 #define IR_BIT(p) (WITHIN(p, 0, 3) ? (p) : (p) + 4)
-#define COPY_ACTIVE_TABLE() do{ LOOP_L_N(i, 6) work_table[i] = active_table[i]; }while(0)
+#define COPY_ACTIVE_TABLE() do{ for (uint8_t i = 0; i < 6; ++i) work_table[i] = active_table[i]; }while(0)
 
 #define PWM_MR0 19999         // base repetition rate minus one count - 20mS
 #define PWM_PR 24             // prescaler value - prescaler divide by 24 + 1  -  1 MHz output

Marlin/src/HAL/DUE/fastio/G2_pins.h

@@ -168,7 +168,6 @@ const G2_PinDescription G2_g_APinDescription[] = {
   { PIOB, PIO_PB21,          ID_PIOB, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NOT_ON_PWM,  NOT_ON_TIMER }, // PIN 52
   { PIOB, PIO_PB14,          ID_PIOB, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NOT_ON_PWM,  NOT_ON_TIMER }, // PIN 53
 
-
   // 54 .. 65 - Analog pins
   // ----------------------
   { PIOA, PIO_PA16X1_AD7,    ID_PIOA, PIO_INPUT,    PIO_DEFAULT, PIN_ATTR_ANALOG,                   ADC0,   ADC7,   NOT_ON_PWM,  NOT_ON_TIMER }, // AD0

Marlin/src/HAL/DUE/inc/Conditionals_LCD.h

@@ -20,7 +20,3 @@
  *
  */
 #pragma once
-
-#if HAS_SPI_TFT || HAS_FSMC_TFT
-  #error "Sorry! TFT displays are not available for HAL/DUE."
-#endif

Marlin/src/HAL/DUE/inc/Conditionals_post.h

@@ -23,6 +23,6 @@
 
 #if USE_FALLBACK_EEPROM
   #define FLASH_EEPROM_EMULATION
-#elif EITHER(I2C_EEPROM, SPI_EEPROM)
+#elif ANY(I2C_EEPROM, SPI_EEPROM)
   #define USE_SHARED_EEPROM 1
 #endif

Marlin/src/HAL/DUE/inc/SanityCheck.h

@@ -25,6 +25,34 @@
  * Test Arduino Due specific configuration values for errors at compile-time.
  */
 
+#if HAS_SPI_TFT || HAS_FSMC_TFT
+  #error "Sorry! TFT displays are not available for HAL/DUE."
+#endif
+
+/**
+ * Check for common serial pin conflicts
+ */
+#define CHECK_SERIAL_PIN(N) ( \
+     X_STOP_PIN == N || Y_STOP_PIN == N || Z_STOP_PIN == N \
+  || X_MIN_PIN  == N || Y_MIN_PIN  == N || Z_MIN_PIN  == N \
+  || X_MAX_PIN  == N || Y_MAX_PIN  == N || Z_MAX_PIN  == N \
+  || X_STEP_PIN == N || Y_STEP_PIN == N || Z_STEP_PIN == N \
+  || X_DIR_PIN  == N || Y_DIR_PIN  == N || Z_DIR_PIN  == N \
+  || X_ENA_PIN  == N || Y_ENA_PIN  == N || Z_ENA_PIN  == N \
+)
+#if SERIAL_IN_USE(0) // D0-D1. No known conflicts.
+#endif
+#if SERIAL_IN_USE(1) && (CHECK_SERIAL_PIN(18) || CHECK_SERIAL_PIN(19))
+  #error "Serial Port 1 pin D18 and/or D19 conflicts with another pin on the board."
+#endif
+#if SERIAL_IN_USE(2) && (CHECK_SERIAL_PIN(16) || CHECK_SERIAL_PIN(17))
+  #error "Serial Port 2 pin D16 and/or D17 conflicts with another pin on the board."
+#endif
+#if SERIAL_IN_USE(3) && (CHECK_SERIAL_PIN(14) || CHECK_SERIAL_PIN(15))
+  #error "Serial Port 3 pin D14 and/or D15 conflicts with another pin on the board."
+#endif
+#undef CHECK_SERIAL_PIN
+
 /**
  * HARDWARE VS. SOFTWARE SPI COMPATIBILITY
  *
@@ -40,22 +68,25 @@
  * Usually the hardware SPI pins are only available to the LCD. This makes the DUE hard SPI used at the same time
  * as the TMC2130 soft SPI the most common setup.
  */
-#define _IS_HW_SPI(P) (defined(TMC_SW_##P) && (TMC_SW_##P == SD_MOSI_PIN || TMC_SW_##P == SD_MISO_PIN || TMC_SW_##P == SD_SCK_PIN))
-
-#if ENABLED(SDSUPPORT) && HAS_DRIVER(TMC2130)
-  #if ENABLED(TMC_USE_SW_SPI)
-    #if DISABLED(DUE_SOFTWARE_SPI) && (_IS_HW_SPI(MOSI) || _IS_HW_SPI(MISO) || _IS_HW_SPI(SCK))
-      #error "DUE hardware SPI is required but is incompatible with TMC2130 software SPI. Either disable TMC_USE_SW_SPI or use separate pins for the two SPIs."
-    #endif
-  #elif ENABLED(DUE_SOFTWARE_SPI)
+#if HAS_MEDIA && HAS_DRIVER(TMC2130)
+  #define _IS_HW_SPI(P) (defined(TMC_SPI_##P) && (TMC_SPI_##P == SD_MOSI_PIN || TMC_SPI_##P == SD_MISO_PIN || TMC_SPI_##P == SD_SCK_PIN))
+  #if DISABLED(DUE_SOFTWARE_SPI) && ENABLED(TMC_USE_SW_SPI) && (_IS_HW_SPI(MOSI) || _IS_HW_SPI(MISO) || _IS_HW_SPI(SCK))
+    #error "DUE hardware SPI is required but is incompatible with TMC2130 software SPI. Either disable TMC_USE_SW_SPI or use separate pins for the two SPIs."
+  #endif
+  #if ENABLED(DUE_SOFTWARE_SPI) && DISABLED(TMC_USE_SW_SPI)
     #error "DUE software SPI is required but is incompatible with TMC2130 hardware SPI. Enable TMC_USE_SW_SPI to fix."
   #endif
+  #undef _IS_HW_SPI
 #endif
 
 #if ENABLED(FAST_PWM_FAN) || SPINDLE_LASER_FREQUENCY
-  #error "Features requiring Hardware PWM (FAST_PWM_FAN, SPINDLE_LASER_FREQUENCY) are not yet supported on DUE."
+  #error "Features requiring Hardware PWM (FAST_PWM_FAN, SPINDLE_LASER_FREQUENCY) are not yet supported for HAL/DUE."
 #endif
 
 #if HAS_TMC_SW_SERIAL
   #error "TMC220x Software Serial is not supported on the DUE platform."
 #endif
+
+#if USING_PULLDOWNS
+  #error "PULLDOWN pin mode is not available on DUE boards."
+#endif

Marlin/src/HAL/DUE/pinsDebug.h

@@ -53,7 +53,7 @@
  *     The net result is that both the g_pinStatus[pin] array and the PIO_OSR register
  *     needs to be looked at when determining if a pin is an input or an output.
  *
- * b) Due has only pins 6, 7, 8 & 9 enabled for PWMs.  FYI - they run at 1KHz
+ * b) Due has only pins 6, 7, 8 & 9 enabled for PWMs.  FYI - they run at 1kHz
  *
  * c) NUM_DIGITAL_PINS does not include the analog pins
  *
@@ -64,13 +64,12 @@
 #define NUMBER_PINS_TOTAL PINS_COUNT
 
 #define digitalRead_mod(p) extDigitalRead(p)  // AVR digitalRead disabled PWM before it read the pin
-#define PRINT_PORT(p)
 #define PRINT_ARRAY_NAME(x) do{ sprintf_P(buffer, PSTR("%-" STRINGIFY(MAX_NAME_LENGTH) "s"), pin_array[x].name); SERIAL_ECHO(buffer); }while(0)
 #define PRINT_PIN(p) do{ sprintf_P(buffer, PSTR("%02d"), p); SERIAL_ECHO(buffer); }while(0)
 #define PRINT_PIN_ANALOG(p) do{ sprintf_P(buffer, PSTR(" (A%2d)  "), DIGITAL_PIN_TO_ANALOG_PIN(pin)); SERIAL_ECHO(buffer); }while(0)
 #define GET_ARRAY_PIN(p) pin_array[p].pin
 #define GET_ARRAY_IS_DIGITAL(p) pin_array[p].is_digital
-#define VALID_PIN(pin) (pin >= 0 && pin < (int8_t)NUMBER_PINS_TOTAL ? 1 : 0)
+#define VALID_PIN(pin) (pin >= 0 && pin < int8_t(NUMBER_PINS_TOTAL))
 #define DIGITAL_PIN_TO_ANALOG_PIN(p) int(p - analogInputToDigitalPin(0))
 #define IS_ANALOG(P) WITHIN(P, char(analogInputToDigitalPin(0)), char(analogInputToDigitalPin(NUM_ANALOG_INPUTS - 1)))
 #define pwm_status(pin) (((g_pinStatus[pin] & 0xF) == PIN_STATUS_PWM) && \
@@ -86,7 +85,6 @@ bool GET_PINMODE(int8_t pin) {  // 1: output, 0: input
           || pwm_status(pin));
 }
 
-
 void pwm_details(int32_t pin) {
   if (pwm_status(pin)) {
     uint32_t chan = g_APinDescription[pin].ulPWMChannel;
@@ -94,6 +92,8 @@ void pwm_details(int32_t pin) {
   }
 }
 
+void print_port(const pin_t) {}
+
 /**
  * DUE Board pin   |  PORT  | Label
  * ----------------+--------+-------

Marlin/src/HAL/DUE/spi_pins.h

@@ -24,7 +24,7 @@
 /**
  * Define SPI Pins: SCK, MISO, MOSI, SS
  *
- * Available chip select pins for HW SPI are 4 10 52 77
+ * Available chip select pins for HW SPI are 4 10 52 77 87
  */
 #if SDSS == 4 || SDSS == 10 || SDSS == 52 || SDSS == 77 || SDSS == 87
   #if SDSS == 4

Marlin/src/HAL/DUE/timers.cpp

@@ -1,9 +1,9 @@
 /**
  * Marlin 3D Printer Firmware
- *
  * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
- * Copyright (c) 2016 Bob Cousins bobcousins42@googlemail.com
- * Copyright (c) 2015-2016 Nico Tonnhofer wurstnase.reprap@gmail.com
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -89,10 +89,17 @@ void HAL_timer_start(const uint8_t timer_num, const uint32_t frequency) {
   NVIC_SetPriority(irq, timer_config[timer_num].priority);
 
   // wave mode, reset counter on match with RC,
-  TC_Configure(tc, channel, TC_CMR_WAVE | TC_CMR_WAVSEL_UP_RC | TC_CMR_TCCLKS_TIMER_CLOCK1);
+  TC_Configure(tc, channel,
+      TC_CMR_WAVE
+    | TC_CMR_WAVSEL_UP_RC
+    | (HAL_TIMER_PRESCALER ==   2 ? TC_CMR_TCCLKS_TIMER_CLOCK1 : 0)
+    | (HAL_TIMER_PRESCALER ==   8 ? TC_CMR_TCCLKS_TIMER_CLOCK2 : 0)
+    | (HAL_TIMER_PRESCALER ==  32 ? TC_CMR_TCCLKS_TIMER_CLOCK3 : 0)
+    | (HAL_TIMER_PRESCALER == 128 ? TC_CMR_TCCLKS_TIMER_CLOCK4 : 0)
+  );
 
   // Set compare value
-  TC_SetRC(tc, channel, VARIANT_MCK / 2 / frequency);
+  TC_SetRC(tc, channel, VARIANT_MCK / (HAL_TIMER_PRESCALER) / frequency);
 
   // And start timer
   TC_Start(tc, channel);

Marlin/src/HAL/DUE/timers.h

@@ -1,8 +1,9 @@
 /**
  * Marlin 3D Printer Firmware
- *
  * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
- * Copyright (c) 2016 Bob Cousins bobcousins42@googlemail.com
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -35,7 +36,8 @@
 typedef uint32_t hal_timer_t;
 #define HAL_TIMER_TYPE_MAX 0xFFFFFFFF
 
-#define HAL_TIMER_RATE         ((F_CPU) / 2)    // frequency of timers peripherals
+#define HAL_TIMER_PRESCALER    2
+#define HAL_TIMER_RATE         ((F_CPU) / (HAL_TIMER_PRESCALER))  // frequency of timers peripherals
 
 #ifndef MF_TIMER_STEP
   #define MF_TIMER_STEP         2  // Timer Index for Stepper
@@ -125,4 +127,4 @@ FORCE_INLINE static void HAL_timer_isr_prologue(const uint8_t timer_num) {
   pConfig->pTimerRegs->TC_CHANNEL[pConfig->channel].TC_SR;
 }
 
-#define HAL_timer_isr_epilogue(T)
+#define HAL_timer_isr_epilogue(T) NOOP

Marlin/src/HAL/DUE/upload_extra_script.py

@@ -6,14 +6,14 @@
 #
 import pioutil
 if pioutil.is_pio_build():
-	import platform
-	current_OS = platform.system()
+    import platform
+    current_OS = platform.system()
 
-	if current_OS == 'Windows':
+    if current_OS == 'Windows':
 
-		Import("env")
+        Import("env")
 
-		# Use bossac.exe on Windows
-		env.Replace(
-			UPLOADCMD="bossac --info --unlock --write --verify --reset --erase -U false --boot $SOURCE"
-		)
+        # Use bossac.exe on Windows
+        env.Replace(
+            UPLOADCMD="bossac --info --unlock --write --verify --reset --erase -U false --boot $SOURCE"
+        )

Marlin/src/HAL/DUE/usb/compiler.h

@@ -142,7 +142,6 @@
  */
 #define COMPILER_PACK_RESET()          COMPILER_PRAGMA(pack())
 
-
 /**
  * \brief Set aligned boundary.
  */
@@ -283,7 +282,6 @@ typedef double                  F64;  //!< 64-bit floating-point number.
 typedef uint32_t                iram_size_t;
 //! @}
 
-
 /*! \name Status Types
  */
 //! @{
@@ -291,7 +289,6 @@ typedef bool                Status_bool_t;  //!< Boolean status.
 typedef U8                  Status_t;       //!< 8-bit-coded status.
 //! @}
 
-
 /*! \name Aliasing Aggregate Types
  */
 //! @{
@@ -462,7 +459,6 @@ typedef struct
 #endif
 //! @}
 
-
 #ifndef __ASSEMBLY__ // not for assembling.
 
 //! \name Optimization Control
@@ -581,7 +577,6 @@ typedef struct
 
 //! @}
 
-
 /*! \name Zero-Bit Counting
  *
  * Under GCC, __builtin_clz and __builtin_ctz behave like macros when
@@ -692,7 +687,6 @@ typedef struct
 
 //! @}
 
-
 /*! \name Bit Reversing
  */
 //! @{
@@ -732,7 +726,6 @@ typedef struct
 
 //! @}
 
-
 /*! \name Alignment
  */
 //! @{
@@ -798,7 +791,6 @@ typedef struct
  */
 #define Long_call(addr)                   ((*(void (*)(void))(addr))())
 
-
 /*! \name MCU Endianism Handling
  * ARM is MCU little endianism.
  */
@@ -868,7 +860,6 @@ typedef struct
 #define  CPU_TO_BE32(x) swap32(x)
 //! @}
 
-
 /*! \name Endianism Conversion
  *
  * The same considerations as for clz and ctz apply here but GCC's
@@ -955,7 +946,6 @@ typedef struct
 
 //! @}
 
-
 /*! \name Target Abstraction
  */
 //! @{
@@ -997,7 +987,6 @@ typedef U8                  Byte;       //!< 8-bit unsigned integer.
 
 #endif  // #ifndef __ASSEMBLY__
 
-
 #ifdef __ICCARM__
 #define SHORTENUM           __packed
 #elif defined(__GNUC__)
@@ -1059,7 +1048,7 @@ static inline void convert_64_bit_to_byte_array(uint64_t value, uint8_t *data)
     while (val_index < 8)
     {
         data[val_index++] = value & 0xFF;
-        value = value >> 8;
+        value >>= 8;
     }
 }
 

Marlin/src/HAL/DUE/usb/conf_access.h

@@ -81,7 +81,6 @@
 #define LUN_0_NAME                              "\"SD/MMC Card\""
 //! @}
 
-
 /*! \name Actions Associated with Memory Accesses
  *
  * Write here the action to associate with each memory access.
@@ -112,5 +111,4 @@
 #define GLOBAL_WR_PROTECT    false   //!< Management of a global write protection.
 //! @}
 
-
 #endif // _CONF_ACCESS_H_

Marlin/src/HAL/DUE/usb/conf_clock.h

@@ -96,5 +96,4 @@
 // - UPLL frequency: 480MHz
 // - USB clock: 480 / 1 = 480MHz
 
-
 #endif /* CONF_CLOCK_H_INCLUDED */

Marlin/src/HAL/DUE/usb/conf_usb.h

@@ -88,7 +88,6 @@
 #endif
 //@}
 
-
 /**
  * USB Device Callbacks definitions (Optional)
  * @{
@@ -101,7 +100,7 @@
 #define  USB_DEVICE_SPECIFIC_REQUEST()  usb_task_other_requests()
 //@}
 
-#if ENABLED(SDSUPPORT)
+#if HAS_MEDIA
   /**
    * USB Device low level configuration
    * When only one interface is used, these configurations are defined by the class module.
@@ -150,7 +149,6 @@
 
 //@}
 
-
 /**
  * USB Interface Configuration
  * @{
@@ -185,7 +183,7 @@
 //! Enable id string of interface to add an extra USB string
 #define  UDI_CDC_IAD_STRING_ID            4
 
-#if ENABLED(SDSUPPORT)
+#if HAS_MEDIA
   /**
    * USB CDC low level configuration
    * In standalone these configurations are defined by the CDC module.
@@ -210,7 +208,6 @@
   //@}
   //@}
 
-
   /**
    * Configuration of MSC interface
    * @{
@@ -245,7 +242,6 @@
 
   //@}
 
-
   /**
    * Description of Composite Device
    * @{

Marlin/src/HAL/DUE/usb/ctrl_access.c

@@ -68,7 +68,6 @@
 #endif
 #include "ctrl_access.h"
 
-
 //_____ D E F I N I T I O N S ______________________________________________
 
 #ifdef FREERTOS_USED
@@ -112,7 +111,6 @@ static xSemaphoreHandle ctrl_access_semphr = NULL;
 
 #endif  // FREERTOS_USED
 
-
 #if MAX_LUN
 
 /*! \brief Initializes an entry of the LUN descriptor table.
@@ -242,17 +240,14 @@ static const struct
 
 #endif
 
-
 #if GLOBAL_WR_PROTECT == true
 bool g_wr_protect;
 #endif
 
-
 /*! \name Control Interface
  */
 //! @{
 
-
 #ifdef FREERTOS_USED
 
 bool ctrl_access_init(void)
@@ -270,7 +265,6 @@ bool ctrl_access_init(void)
   return true;
 }
 
-
 /*! \brief Locks accesses to LUNs.
  *
  * \return \c true if the access was successfully locked, else \c false.
@@ -288,7 +282,6 @@ static bool ctrl_access_lock(void)
 
 #endif  // FREERTOS_USED
 
-
 U8 get_nb_lun(void)
 {
 #if MEM_USB == ENABLE
@@ -309,13 +302,11 @@ U8 get_nb_lun(void)
 #endif
 }
 
-
 U8 get_cur_lun(void)
 {
   return LUN_ID_0;
 }
 
-
 Ctrl_status mem_test_unit_ready(U8 lun)
 {
   Ctrl_status status;
@@ -337,7 +328,6 @@ Ctrl_status mem_test_unit_ready(U8 lun)
   return status;
 }
 
-
 Ctrl_status mem_read_capacity(U8 lun, U32 *u32_nb_sector)
 {
   Ctrl_status status;
@@ -359,7 +349,6 @@ Ctrl_status mem_read_capacity(U8 lun, U32 *u32_nb_sector)
   return status;
 }
 
-
 U8 mem_sector_size(U8 lun)
 {
   U8 sector_size;
@@ -381,7 +370,6 @@ U8 mem_sector_size(U8 lun)
   return sector_size;
 }
 
-
 bool mem_unload(U8 lun, bool unload)
 {
   bool unloaded;
@@ -433,7 +421,6 @@ bool mem_wr_protect(U8 lun)
   return wr_protect;
 }
 
-
 bool mem_removal(U8 lun)
 {
   bool removal;
@@ -458,7 +445,6 @@ bool mem_removal(U8 lun)
   return removal;
 }
 
-
 const char *mem_name(U8 lun)
 {
 #if MAX_LUN==0
@@ -475,17 +461,14 @@ const char *mem_name(U8 lun)
 #endif
 }
 
-
 //! @}
 
-
 #if ACCESS_USB == true
 
 /*! \name MEM <-> USB Interface
  */
 //! @{
 
-
 Ctrl_status memory_2_usb(U8 lun, U32 addr, U16 nb_sector)
 {
   Ctrl_status status;
@@ -505,7 +488,6 @@ Ctrl_status memory_2_usb(U8 lun, U32 addr, U16 nb_sector)
   return status;
 }
 
-
 Ctrl_status usb_2_memory(U8 lun, U32 addr, U16 nb_sector)
 {
   Ctrl_status status;
@@ -525,19 +507,16 @@ Ctrl_status usb_2_memory(U8 lun, U32 addr, U16 nb_sector)
   return status;
 }
 
-
 //! @}
 
 #endif  // ACCESS_USB == true
 
-
 #if ACCESS_MEM_TO_RAM == true
 
 /*! \name MEM <-> RAM Interface
  */
 //! @{
 
-
 Ctrl_status memory_2_ram(U8 lun, U32 addr, void *ram)
 {
   Ctrl_status status;
@@ -564,7 +543,6 @@ Ctrl_status memory_2_ram(U8 lun, U32 addr, void *ram)
   return status;
 }
 
-
 Ctrl_status ram_2_memory(U8 lun, U32 addr, const void *ram)
 {
   Ctrl_status status;
@@ -591,19 +569,16 @@ Ctrl_status ram_2_memory(U8 lun, U32 addr, const void *ram)
   return status;
 }
 
-
 //! @}
 
 #endif  // ACCESS_MEM_TO_RAM == true
 
-
 #if ACCESS_STREAM == true
 
 /*! \name Streaming MEM <-> MEM Interface
  */
 //! @{
 
-
   #if ACCESS_MEM_TO_MEM == true
 
 #include "fat.h"
@@ -625,21 +600,18 @@ Ctrl_status stream_mem_to_mem(U8 src_lun, U32 src_addr, U8 dest_lun, U32 dest_ad
 
   #endif  // ACCESS_MEM_TO_MEM == true
 
-
 Ctrl_status stream_state(U8 id)
 {
   UNUSED(id);
   return CTRL_GOOD;
 }
 
-
 U16 stream_stop(U8 id)
 {
   UNUSED(id);
   return 0;
 }
 
-
 //! @}
 
 #endif // ACCESS_STREAM

Marlin/src/HAL/DUE/usb/ctrl_access.h

@@ -56,7 +56,6 @@
  * Support and FAQ: visit <a href="https://www.atmel.com/design-support/">Atmel Support</a>
  */
 
-
 #ifndef _CTRL_ACCESS_H_
 #define _CTRL_ACCESS_H_
 
@@ -89,7 +88,6 @@ typedef enum
   CTRL_BUSY       = FAIL + 2  //!< Memory not initialized or changed.
 } Ctrl_status;
 
-
 // FYI: Each Logical Unit Number (LUN) corresponds to a memory.
 
 // Check LUN defines.
@@ -136,7 +134,6 @@ typedef enum
 #define LUN_ID_USB      (MAX_LUN)           //!< First dynamic LUN (USB host mass storage).
 //! @}
 
-
 // Include LUN header files.
 #if LUN_0 == ENABLE
   #include LUN_0_INCLUDE
@@ -166,13 +163,11 @@ typedef enum
   #include LUN_USB_INCLUDE
 #endif
 
-
 // Check the configuration of write protection in conf_access.h.
 #ifndef GLOBAL_WR_PROTECT
   #error GLOBAL_WR_PROTECT must be defined as true or false in conf_access.h
 #endif
 
-
 #if GLOBAL_WR_PROTECT == true
 
 //! Write protect.
@@ -180,7 +175,6 @@ extern bool g_wr_protect;
 
 #endif
 
-
 /*! \name Control Interface
  */
 //! @{
@@ -279,7 +273,6 @@ extern const char *mem_name(U8 lun);
 
 //! @}
 
-
 #if ACCESS_USB == true
 
 /*! \name MEM <-> USB Interface
@@ -310,7 +303,6 @@ extern Ctrl_status usb_2_memory(U8 lun, U32 addr, U16 nb_sector);
 
 #endif  // ACCESS_USB == true
 
-
 #if ACCESS_MEM_TO_RAM == true
 
 /*! \name MEM <-> RAM Interface
@@ -341,7 +333,6 @@ extern Ctrl_status ram_2_memory(U8 lun, U32 addr, const void *ram);
 
 #endif  // ACCESS_MEM_TO_RAM == true
 
-
 #if ACCESS_STREAM == true
 
 /*! \name Streaming MEM <-> MEM Interface

Marlin/src/HAL/DUE/usb/genclk.h

@@ -74,17 +74,17 @@ extern "C" {
 //@{
 
 enum genclk_source {
-	GENCLK_PCK_SRC_SLCK_RC       = 0, //!< Internal 32kHz RC oscillator as PCK source clock
-	GENCLK_PCK_SRC_SLCK_XTAL     = 1, //!< External 32kHz crystal oscillator as PCK source clock
-	GENCLK_PCK_SRC_SLCK_BYPASS   = 2, //!< External 32kHz bypass oscillator as PCK source clock
-	GENCLK_PCK_SRC_MAINCK_4M_RC  = 3, //!< Internal 4MHz RC oscillator as PCK source clock
-	GENCLK_PCK_SRC_MAINCK_8M_RC  = 4, //!< Internal 8MHz RC oscillator as PCK source clock
-	GENCLK_PCK_SRC_MAINCK_12M_RC = 5, //!< Internal 12MHz RC oscillator as PCK source clock
-	GENCLK_PCK_SRC_MAINCK_XTAL   = 6, //!< External crystal oscillator as PCK source clock
-	GENCLK_PCK_SRC_MAINCK_BYPASS = 7, //!< External bypass oscillator as PCK source clock
-	GENCLK_PCK_SRC_PLLACK        = 8, //!< Use PLLACK as PCK source clock
-	GENCLK_PCK_SRC_PLLBCK        = 9, //!< Use PLLBCK as PCK source clock
-	GENCLK_PCK_SRC_MCK           = 10, //!< Use Master Clk as PCK source clock
+  GENCLK_PCK_SRC_SLCK_RC       = 0, //!< Internal 32kHz RC oscillator as PCK source clock
+  GENCLK_PCK_SRC_SLCK_XTAL     = 1, //!< External 32kHz crystal oscillator as PCK source clock
+  GENCLK_PCK_SRC_SLCK_BYPASS   = 2, //!< External 32kHz bypass oscillator as PCK source clock
+  GENCLK_PCK_SRC_MAINCK_4M_RC  = 3, //!< Internal 4MHz RC oscillator as PCK source clock
+  GENCLK_PCK_SRC_MAINCK_8M_RC  = 4, //!< Internal 8MHz RC oscillator as PCK source clock
+  GENCLK_PCK_SRC_MAINCK_12M_RC = 5, //!< Internal 12MHz RC oscillator as PCK source clock
+  GENCLK_PCK_SRC_MAINCK_XTAL   = 6, //!< External crystal oscillator as PCK source clock
+  GENCLK_PCK_SRC_MAINCK_BYPASS = 7, //!< External bypass oscillator as PCK source clock
+  GENCLK_PCK_SRC_PLLACK        = 8, //!< Use PLLACK as PCK source clock
+  GENCLK_PCK_SRC_PLLBCK        = 9, //!< Use PLLBCK as PCK source clock
+  GENCLK_PCK_SRC_MCK           = 10, //!< Use Master Clk as PCK source clock
 };
 
 //@}
@@ -93,176 +93,162 @@ enum genclk_source {
 //@{
 
 enum genclk_divider {
-	GENCLK_PCK_PRES_1  = PMC_PCK_PRES_CLK_1, //!< Set PCK clock prescaler to 1
-	GENCLK_PCK_PRES_2  = PMC_PCK_PRES_CLK_2, //!< Set PCK clock prescaler to 2
-	GENCLK_PCK_PRES_4  = PMC_PCK_PRES_CLK_4, //!< Set PCK clock prescaler to 4
-	GENCLK_PCK_PRES_8  = PMC_PCK_PRES_CLK_8, //!< Set PCK clock prescaler to 8
-	GENCLK_PCK_PRES_16 = PMC_PCK_PRES_CLK_16, //!< Set PCK clock prescaler to 16
-	GENCLK_PCK_PRES_32 = PMC_PCK_PRES_CLK_32, //!< Set PCK clock prescaler to 32
-	GENCLK_PCK_PRES_64 = PMC_PCK_PRES_CLK_64, //!< Set PCK clock prescaler to 64
+  GENCLK_PCK_PRES_1  = PMC_PCK_PRES_CLK_1, //!< Set PCK clock prescaler to 1
+  GENCLK_PCK_PRES_2  = PMC_PCK_PRES_CLK_2, //!< Set PCK clock prescaler to 2
+  GENCLK_PCK_PRES_4  = PMC_PCK_PRES_CLK_4, //!< Set PCK clock prescaler to 4
+  GENCLK_PCK_PRES_8  = PMC_PCK_PRES_CLK_8, //!< Set PCK clock prescaler to 8
+  GENCLK_PCK_PRES_16 = PMC_PCK_PRES_CLK_16, //!< Set PCK clock prescaler to 16
+  GENCLK_PCK_PRES_32 = PMC_PCK_PRES_CLK_32, //!< Set PCK clock prescaler to 32
+  GENCLK_PCK_PRES_64 = PMC_PCK_PRES_CLK_64, //!< Set PCK clock prescaler to 64
 };
 
 //@}
 
 struct genclk_config {
-	uint32_t ctrl;
+  uint32_t ctrl;
 };
 
-static inline void genclk_config_defaults(struct genclk_config *p_cfg,
-		uint32_t ul_id)
-{
-	ul_id = ul_id;
-	p_cfg->ctrl = 0;
+static inline void genclk_config_defaults(struct genclk_config *p_cfg, uint32_t ul_id) {
+  ul_id = ul_id;
+  p_cfg->ctrl = 0;
 }
 
-static inline void genclk_config_read(struct genclk_config *p_cfg,
-		uint32_t ul_id)
-{
-	p_cfg->ctrl = PMC->PMC_PCK[ul_id];
+static inline void genclk_config_read(struct genclk_config *p_cfg, uint32_t ul_id) {
+  p_cfg->ctrl = PMC->PMC_PCK[ul_id];
 }
 
-static inline void genclk_config_write(const struct genclk_config *p_cfg,
-		uint32_t ul_id)
-{
-	PMC->PMC_PCK[ul_id] = p_cfg->ctrl;
+static inline void genclk_config_write(const struct genclk_config *p_cfg, uint32_t ul_id) {
+  PMC->PMC_PCK[ul_id] = p_cfg->ctrl;
 }
 
 //! \name Programmable Clock Source and Prescaler configuration
 //@{
 
-static inline void genclk_config_set_source(struct genclk_config *p_cfg,
-		enum genclk_source e_src)
-{
-	p_cfg->ctrl &= (~PMC_PCK_CSS_Msk);
+static inline void genclk_config_set_source(struct genclk_config *p_cfg, enum genclk_source e_src) {
+  p_cfg->ctrl &= (~PMC_PCK_CSS_Msk);
 
-	switch (e_src) {
-	case GENCLK_PCK_SRC_SLCK_RC:
-	case GENCLK_PCK_SRC_SLCK_XTAL:
-	case GENCLK_PCK_SRC_SLCK_BYPASS:
-		p_cfg->ctrl |= (PMC_PCK_CSS_SLOW_CLK);
-		break;
+  switch (e_src) {
+  case GENCLK_PCK_SRC_SLCK_RC:
+  case GENCLK_PCK_SRC_SLCK_XTAL:
+  case GENCLK_PCK_SRC_SLCK_BYPASS:
+    p_cfg->ctrl |= (PMC_PCK_CSS_SLOW_CLK);
+    break;
 
-	case GENCLK_PCK_SRC_MAINCK_4M_RC:
-	case GENCLK_PCK_SRC_MAINCK_8M_RC:
-	case GENCLK_PCK_SRC_MAINCK_12M_RC:
-	case GENCLK_PCK_SRC_MAINCK_XTAL:
-	case GENCLK_PCK_SRC_MAINCK_BYPASS:
-		p_cfg->ctrl |= (PMC_PCK_CSS_MAIN_CLK);
-		break;
+  case GENCLK_PCK_SRC_MAINCK_4M_RC:
+  case GENCLK_PCK_SRC_MAINCK_8M_RC:
+  case GENCLK_PCK_SRC_MAINCK_12M_RC:
+  case GENCLK_PCK_SRC_MAINCK_XTAL:
+  case GENCLK_PCK_SRC_MAINCK_BYPASS:
+    p_cfg->ctrl |= (PMC_PCK_CSS_MAIN_CLK);
+    break;
 
-	case GENCLK_PCK_SRC_PLLACK:
-		p_cfg->ctrl |= (PMC_PCK_CSS_PLLA_CLK);
-		break;
+  case GENCLK_PCK_SRC_PLLACK:
+    p_cfg->ctrl |= (PMC_PCK_CSS_PLLA_CLK);
+    break;
 
-	case GENCLK_PCK_SRC_PLLBCK:
-		p_cfg->ctrl |= (PMC_PCK_CSS_UPLL_CLK);
-		break;
+  case GENCLK_PCK_SRC_PLLBCK:
+    p_cfg->ctrl |= (PMC_PCK_CSS_UPLL_CLK);
+    break;
 
-	case GENCLK_PCK_SRC_MCK:
-		p_cfg->ctrl |= (PMC_PCK_CSS_MCK);
-		break;
-	}
+  case GENCLK_PCK_SRC_MCK:
+    p_cfg->ctrl |= (PMC_PCK_CSS_MCK);
+    break;
+  }
 }
 
-static inline void genclk_config_set_divider(struct genclk_config *p_cfg,
-		uint32_t e_divider)
-{
-	p_cfg->ctrl &= ~PMC_PCK_PRES_Msk;
-	p_cfg->ctrl |= e_divider;
+static inline void genclk_config_set_divider(struct genclk_config *p_cfg, uint32_t e_divider) {
+  p_cfg->ctrl &= ~PMC_PCK_PRES_Msk;
+  p_cfg->ctrl |= e_divider;
 }
 
 //@}
 
-static inline void genclk_enable(const struct genclk_config *p_cfg,
-		uint32_t ul_id)
-{
-	PMC->PMC_PCK[ul_id] = p_cfg->ctrl;
-	pmc_enable_pck(ul_id);
+static inline void genclk_enable(const struct genclk_config *p_cfg, uint32_t ul_id) {
+  PMC->PMC_PCK[ul_id] = p_cfg->ctrl;
+  pmc_enable_pck(ul_id);
 }
 
-static inline void genclk_disable(uint32_t ul_id)
-{
-	pmc_disable_pck(ul_id);
+static inline void genclk_disable(uint32_t ul_id) {
+  pmc_disable_pck(ul_id);
 }
 
-static inline void genclk_enable_source(enum genclk_source e_src)
-{
-	switch (e_src) {
-	case GENCLK_PCK_SRC_SLCK_RC:
-		if (!osc_is_ready(OSC_SLCK_32K_RC)) {
-			osc_enable(OSC_SLCK_32K_RC);
-			osc_wait_ready(OSC_SLCK_32K_RC);
-		}
-		break;
+static inline void genclk_enable_source(enum genclk_source e_src) {
+  switch (e_src) {
+  case GENCLK_PCK_SRC_SLCK_RC:
+    if (!osc_is_ready(OSC_SLCK_32K_RC)) {
+      osc_enable(OSC_SLCK_32K_RC);
+      osc_wait_ready(OSC_SLCK_32K_RC);
+    }
+    break;
 
-	case GENCLK_PCK_SRC_SLCK_XTAL:
-		if (!osc_is_ready(OSC_SLCK_32K_XTAL)) {
-			osc_enable(OSC_SLCK_32K_XTAL);
-			osc_wait_ready(OSC_SLCK_32K_XTAL);
-		}
-		break;
+  case GENCLK_PCK_SRC_SLCK_XTAL:
+    if (!osc_is_ready(OSC_SLCK_32K_XTAL)) {
+      osc_enable(OSC_SLCK_32K_XTAL);
+      osc_wait_ready(OSC_SLCK_32K_XTAL);
+    }
+    break;
 
-	case GENCLK_PCK_SRC_SLCK_BYPASS:
-		if (!osc_is_ready(OSC_SLCK_32K_BYPASS)) {
-			osc_enable(OSC_SLCK_32K_BYPASS);
-			osc_wait_ready(OSC_SLCK_32K_BYPASS);
-		}
-		break;
+  case GENCLK_PCK_SRC_SLCK_BYPASS:
+    if (!osc_is_ready(OSC_SLCK_32K_BYPASS)) {
+      osc_enable(OSC_SLCK_32K_BYPASS);
+      osc_wait_ready(OSC_SLCK_32K_BYPASS);
+    }
+    break;
 
-	case GENCLK_PCK_SRC_MAINCK_4M_RC:
-		if (!osc_is_ready(OSC_MAINCK_4M_RC)) {
-			osc_enable(OSC_MAINCK_4M_RC);
-			osc_wait_ready(OSC_MAINCK_4M_RC);
-		}
-		break;
+  case GENCLK_PCK_SRC_MAINCK_4M_RC:
+    if (!osc_is_ready(OSC_MAINCK_4M_RC)) {
+      osc_enable(OSC_MAINCK_4M_RC);
+      osc_wait_ready(OSC_MAINCK_4M_RC);
+    }
+    break;
 
-	case GENCLK_PCK_SRC_MAINCK_8M_RC:
-		if (!osc_is_ready(OSC_MAINCK_8M_RC)) {
-			osc_enable(OSC_MAINCK_8M_RC);
-			osc_wait_ready(OSC_MAINCK_8M_RC);
-		}
-		break;
+  case GENCLK_PCK_SRC_MAINCK_8M_RC:
+    if (!osc_is_ready(OSC_MAINCK_8M_RC)) {
+      osc_enable(OSC_MAINCK_8M_RC);
+      osc_wait_ready(OSC_MAINCK_8M_RC);
+    }
+    break;
 
-	case GENCLK_PCK_SRC_MAINCK_12M_RC:
-		if (!osc_is_ready(OSC_MAINCK_12M_RC)) {
-			osc_enable(OSC_MAINCK_12M_RC);
-			osc_wait_ready(OSC_MAINCK_12M_RC);
-		}
-		break;
+  case GENCLK_PCK_SRC_MAINCK_12M_RC:
+    if (!osc_is_ready(OSC_MAINCK_12M_RC)) {
+      osc_enable(OSC_MAINCK_12M_RC);
+      osc_wait_ready(OSC_MAINCK_12M_RC);
+    }
+    break;
 
-	case GENCLK_PCK_SRC_MAINCK_XTAL:
-		if (!osc_is_ready(OSC_MAINCK_XTAL)) {
-			osc_enable(OSC_MAINCK_XTAL);
-			osc_wait_ready(OSC_MAINCK_XTAL);
-		}
-		break;
+  case GENCLK_PCK_SRC_MAINCK_XTAL:
+    if (!osc_is_ready(OSC_MAINCK_XTAL)) {
+      osc_enable(OSC_MAINCK_XTAL);
+      osc_wait_ready(OSC_MAINCK_XTAL);
+    }
+    break;
 
-	case GENCLK_PCK_SRC_MAINCK_BYPASS:
-		if (!osc_is_ready(OSC_MAINCK_BYPASS)) {
-			osc_enable(OSC_MAINCK_BYPASS);
-			osc_wait_ready(OSC_MAINCK_BYPASS);
-		}
-		break;
+  case GENCLK_PCK_SRC_MAINCK_BYPASS:
+    if (!osc_is_ready(OSC_MAINCK_BYPASS)) {
+      osc_enable(OSC_MAINCK_BYPASS);
+      osc_wait_ready(OSC_MAINCK_BYPASS);
+    }
+    break;
 
-#ifdef CONFIG_PLL0_SOURCE
-	case GENCLK_PCK_SRC_PLLACK:
-		pll_enable_config_defaults(0);
-		break;
-#endif
+  #ifdef CONFIG_PLL0_SOURCE
+    case GENCLK_PCK_SRC_PLLACK:
+      pll_enable_config_defaults(0);
+      break;
+  #endif
 
-#ifdef CONFIG_PLL1_SOURCE
-	case GENCLK_PCK_SRC_PLLBCK:
-		pll_enable_config_defaults(1);
-		break;
-#endif
+  #ifdef CONFIG_PLL1_SOURCE
+    case GENCLK_PCK_SRC_PLLBCK:
+      pll_enable_config_defaults(1);
+      break;
+  #endif
 
-	case GENCLK_PCK_SRC_MCK:
-		break;
+  case GENCLK_PCK_SRC_MCK:
+    break;
 
-	default:
-		Assert(false);
-		break;
-	}
+  default:
+    Assert(false);
+    break;
+  }
 }
 
 //! @}

Marlin/src/HAL/DUE/usb/mrepeat.h

@@ -57,7 +57,6 @@
 
 #include "preprocessor.h"
 
-
 //! Maximal number of repetitions supported by MREPEAT.
 #define MREPEAT_LIMIT   256
 

Marlin/src/HAL/DUE/usb/osc.h

@@ -62,28 +62,28 @@ extern "C" {
  * should be defined by the board code, otherwise default value are used.
  */
 #ifndef BOARD_FREQ_SLCK_XTAL
-#  warning The board slow clock xtal frequency has not been defined.
-#  define BOARD_FREQ_SLCK_XTAL      (32768UL)
+  #warning The board slow clock xtal frequency has not been defined.
+  #define BOARD_FREQ_SLCK_XTAL      (32768UL)
 #endif
 
 #ifndef BOARD_FREQ_SLCK_BYPASS
-#  warning The board slow clock bypass frequency has not been defined.
-#  define BOARD_FREQ_SLCK_BYPASS    (32768UL)
+  #warning The board slow clock bypass frequency has not been defined.
+  #define BOARD_FREQ_SLCK_BYPASS    (32768UL)
 #endif
 
 #ifndef BOARD_FREQ_MAINCK_XTAL
-#  warning The board main clock xtal frequency has not been defined.
-#  define BOARD_FREQ_MAINCK_XTAL    (12000000UL)
+  #warning The board main clock xtal frequency has not been defined.
+  #define BOARD_FREQ_MAINCK_XTAL    (12000000UL)
 #endif
 
 #ifndef BOARD_FREQ_MAINCK_BYPASS
-#  warning The board main clock bypass frequency has not been defined.
-#  define BOARD_FREQ_MAINCK_BYPASS  (12000000UL)
+  #warning The board main clock bypass frequency has not been defined.
+  #define BOARD_FREQ_MAINCK_BYPASS  (12000000UL)
 #endif
 
 #ifndef BOARD_OSC_STARTUP_US
-#  warning The board main clock xtal startup time has not been defined.
-#  define BOARD_OSC_STARTUP_US      (15625UL)
+  #warning The board main clock xtal startup time has not been defined.
+  #define BOARD_OSC_STARTUP_US      (15625UL)
 #endif
 
 /**
@@ -115,122 +115,116 @@ extern "C" {
 #define OSC_MAINCK_BYPASS_HZ        BOARD_FREQ_MAINCK_BYPASS        //!< External bypass oscillator.
 //@}
 
-static inline void osc_enable(uint32_t ul_id)
-{
-	switch (ul_id) {
-	case OSC_SLCK_32K_RC:
-		break;
+static inline void osc_enable(uint32_t ul_id) {
+  switch (ul_id) {
+  case OSC_SLCK_32K_RC:
+    break;
 
-	case OSC_SLCK_32K_XTAL:
-		pmc_switch_sclk_to_32kxtal(PMC_OSC_XTAL);
-		break;
+  case OSC_SLCK_32K_XTAL:
+    pmc_switch_sclk_to_32kxtal(PMC_OSC_XTAL);
+    break;
 
-	case OSC_SLCK_32K_BYPASS:
-		pmc_switch_sclk_to_32kxtal(PMC_OSC_BYPASS);
-		break;
+  case OSC_SLCK_32K_BYPASS:
+    pmc_switch_sclk_to_32kxtal(PMC_OSC_BYPASS);
+    break;
 
+  case OSC_MAINCK_4M_RC:
+    pmc_switch_mainck_to_fastrc(CKGR_MOR_MOSCRCF_4_MHz);
+    break;
 
-	case OSC_MAINCK_4M_RC:
-		pmc_switch_mainck_to_fastrc(CKGR_MOR_MOSCRCF_4_MHz);
-		break;
+  case OSC_MAINCK_8M_RC:
+    pmc_switch_mainck_to_fastrc(CKGR_MOR_MOSCRCF_8_MHz);
+    break;
 
-	case OSC_MAINCK_8M_RC:
-		pmc_switch_mainck_to_fastrc(CKGR_MOR_MOSCRCF_8_MHz);
-		break;
+  case OSC_MAINCK_12M_RC:
+    pmc_switch_mainck_to_fastrc(CKGR_MOR_MOSCRCF_12_MHz);
+    break;
 
-	case OSC_MAINCK_12M_RC:
-		pmc_switch_mainck_to_fastrc(CKGR_MOR_MOSCRCF_12_MHz);
-		break;
+  case OSC_MAINCK_XTAL:
+    pmc_switch_mainck_to_xtal(PMC_OSC_XTAL/*,
+      pmc_us_to_moscxtst(BOARD_OSC_STARTUP_US,
+        OSC_SLCK_32K_RC_HZ)*/);
+    break;
 
-
-	case OSC_MAINCK_XTAL:
-		pmc_switch_mainck_to_xtal(PMC_OSC_XTAL/*,
-			pmc_us_to_moscxtst(BOARD_OSC_STARTUP_US,
-				OSC_SLCK_32K_RC_HZ)*/);
-		break;
-
-	case OSC_MAINCK_BYPASS:
-		pmc_switch_mainck_to_xtal(PMC_OSC_BYPASS/*,
-			pmc_us_to_moscxtst(BOARD_OSC_STARTUP_US,
-				OSC_SLCK_32K_RC_HZ)*/);
-		break;
-	}
+  case OSC_MAINCK_BYPASS:
+    pmc_switch_mainck_to_xtal(PMC_OSC_BYPASS/*,
+      pmc_us_to_moscxtst(BOARD_OSC_STARTUP_US,
+        OSC_SLCK_32K_RC_HZ)*/);
+    break;
+  }
 }
 
-static inline void osc_disable(uint32_t ul_id)
-{
-	switch (ul_id) {
-	case OSC_SLCK_32K_RC:
-	case OSC_SLCK_32K_XTAL:
-	case OSC_SLCK_32K_BYPASS:
-		break;
+static inline void osc_disable(uint32_t ul_id) {
+  switch (ul_id) {
+  case OSC_SLCK_32K_RC:
+  case OSC_SLCK_32K_XTAL:
+  case OSC_SLCK_32K_BYPASS:
+    break;
 
-	case OSC_MAINCK_4M_RC:
-	case OSC_MAINCK_8M_RC:
-	case OSC_MAINCK_12M_RC:
-		pmc_osc_disable_fastrc();
-		break;
+  case OSC_MAINCK_4M_RC:
+  case OSC_MAINCK_8M_RC:
+  case OSC_MAINCK_12M_RC:
+    pmc_osc_disable_fastrc();
+    break;
 
-	case OSC_MAINCK_XTAL:
-		pmc_osc_disable_xtal(PMC_OSC_XTAL);
-		break;
+  case OSC_MAINCK_XTAL:
+    pmc_osc_disable_xtal(PMC_OSC_XTAL);
+    break;
 
-	case OSC_MAINCK_BYPASS:
-		pmc_osc_disable_xtal(PMC_OSC_BYPASS);
-		break;
-	}
+  case OSC_MAINCK_BYPASS:
+    pmc_osc_disable_xtal(PMC_OSC_BYPASS);
+    break;
+  }
 }
 
-static inline bool osc_is_ready(uint32_t ul_id)
-{
-	switch (ul_id) {
-	case OSC_SLCK_32K_RC:
-		return 1;
+static inline bool osc_is_ready(uint32_t ul_id) {
+  switch (ul_id) {
+  case OSC_SLCK_32K_RC:
+    return 1;
 
-	case OSC_SLCK_32K_XTAL:
-	case OSC_SLCK_32K_BYPASS:
-		return pmc_osc_is_ready_32kxtal();
+  case OSC_SLCK_32K_XTAL:
+  case OSC_SLCK_32K_BYPASS:
+    return pmc_osc_is_ready_32kxtal();
 
-	case OSC_MAINCK_4M_RC:
-	case OSC_MAINCK_8M_RC:
-	case OSC_MAINCK_12M_RC:
-	case OSC_MAINCK_XTAL:
-	case OSC_MAINCK_BYPASS:
-		return pmc_osc_is_ready_mainck();
-	}
+  case OSC_MAINCK_4M_RC:
+  case OSC_MAINCK_8M_RC:
+  case OSC_MAINCK_12M_RC:
+  case OSC_MAINCK_XTAL:
+  case OSC_MAINCK_BYPASS:
+    return pmc_osc_is_ready_mainck();
+  }
 
-	return 0;
+  return 0;
 }
 
-static inline uint32_t osc_get_rate(uint32_t ul_id)
-{
-	switch (ul_id) {
-	case OSC_SLCK_32K_RC:
-		return OSC_SLCK_32K_RC_HZ;
+static inline uint32_t osc_get_rate(uint32_t ul_id) {
+  switch (ul_id) {
+  case OSC_SLCK_32K_RC:
+    return OSC_SLCK_32K_RC_HZ;
 
-	case OSC_SLCK_32K_XTAL:
-		return BOARD_FREQ_SLCK_XTAL;
+  case OSC_SLCK_32K_XTAL:
+    return BOARD_FREQ_SLCK_XTAL;
 
-	case OSC_SLCK_32K_BYPASS:
-		return BOARD_FREQ_SLCK_BYPASS;
+  case OSC_SLCK_32K_BYPASS:
+    return BOARD_FREQ_SLCK_BYPASS;
 
-	case OSC_MAINCK_4M_RC:
-		return OSC_MAINCK_4M_RC_HZ;
+  case OSC_MAINCK_4M_RC:
+    return OSC_MAINCK_4M_RC_HZ;
 
-	case OSC_MAINCK_8M_RC:
-		return OSC_MAINCK_8M_RC_HZ;
+  case OSC_MAINCK_8M_RC:
+    return OSC_MAINCK_8M_RC_HZ;
 
-	case OSC_MAINCK_12M_RC:
-		return OSC_MAINCK_12M_RC_HZ;
+  case OSC_MAINCK_12M_RC:
+    return OSC_MAINCK_12M_RC_HZ;
 
-	case OSC_MAINCK_XTAL:
-		return BOARD_FREQ_MAINCK_XTAL;
+  case OSC_MAINCK_XTAL:
+    return BOARD_FREQ_MAINCK_XTAL;
 
-	case OSC_MAINCK_BYPASS:
-		return BOARD_FREQ_MAINCK_BYPASS;
-	}
+  case OSC_MAINCK_BYPASS:
+    return BOARD_FREQ_MAINCK_BYPASS;
+  }
 
-	return 0;
+  return 0;
 }
 
 /**
@@ -241,11 +235,10 @@ static inline uint32_t osc_get_rate(uint32_t ul_id)
  *
  * \param id A number identifying the oscillator to wait for.
  */
-static inline void osc_wait_ready(uint8_t id)
-{
-	while (!osc_is_ready(id)) {
-		/* Do nothing */
-	}
+static inline void osc_wait_ready(uint8_t id) {
+  while (!osc_is_ready(id)) {
+    /* Do nothing */
+  }
 }
 
 //! @}

Marlin/src/HAL/DUE/usb/pll.h

@@ -77,22 +77,22 @@ extern "C" {
 #define PLL_COUNT           0x3FU
 
 enum pll_source {
-	PLL_SRC_MAINCK_4M_RC        = OSC_MAINCK_4M_RC,     //!< Internal 4MHz RC oscillator.
-	PLL_SRC_MAINCK_8M_RC        = OSC_MAINCK_8M_RC,     //!< Internal 8MHz RC oscillator.
-	PLL_SRC_MAINCK_12M_RC       = OSC_MAINCK_12M_RC,    //!< Internal 12MHz RC oscillator.
-	PLL_SRC_MAINCK_XTAL         = OSC_MAINCK_XTAL,      //!< External crystal oscillator.
-	PLL_SRC_MAINCK_BYPASS       = OSC_MAINCK_BYPASS,    //!< External bypass oscillator.
-	PLL_NR_SOURCES,                                     //!< Number of PLL sources.
+  PLL_SRC_MAINCK_4M_RC        = OSC_MAINCK_4M_RC,     //!< Internal 4MHz RC oscillator.
+  PLL_SRC_MAINCK_8M_RC        = OSC_MAINCK_8M_RC,     //!< Internal 8MHz RC oscillator.
+  PLL_SRC_MAINCK_12M_RC       = OSC_MAINCK_12M_RC,    //!< Internal 12MHz RC oscillator.
+  PLL_SRC_MAINCK_XTAL         = OSC_MAINCK_XTAL,      //!< External crystal oscillator.
+  PLL_SRC_MAINCK_BYPASS       = OSC_MAINCK_BYPASS,    //!< External bypass oscillator.
+  PLL_NR_SOURCES,                                     //!< Number of PLL sources.
 };
 
 struct pll_config {
-	uint32_t ctrl;
+  uint32_t ctrl;
 };
 
 #define pll_get_default_rate(pll_id)                                       \
-	((osc_get_rate(CONFIG_PLL##pll_id##_SOURCE)                            \
-			* CONFIG_PLL##pll_id##_MUL)                                    \
-			/ CONFIG_PLL##pll_id##_DIV)
+  ((osc_get_rate(CONFIG_PLL##pll_id##_SOURCE)                            \
+      * CONFIG_PLL##pll_id##_MUL)                                    \
+      / CONFIG_PLL##pll_id##_DIV)
 
 /* Force UTMI PLL parameters (Hardware defined) */
 #ifdef CONFIG_PLL1_SOURCE
@@ -113,145 +113,130 @@ struct pll_config {
  * is hidden in this implementation. Use mul as mul effective value.
  */
 static inline void pll_config_init(struct pll_config *p_cfg,
-		enum pll_source e_src, uint32_t ul_div, uint32_t ul_mul)
-{
-	uint32_t vco_hz;
+    enum pll_source e_src, uint32_t ul_div, uint32_t ul_mul) {
+  uint32_t vco_hz;
 
-	Assert(e_src < PLL_NR_SOURCES);
+  Assert(e_src < PLL_NR_SOURCES);
 
-	if (ul_div == 0 && ul_mul == 0) { /* Must only be true for UTMI PLL */
-		p_cfg->ctrl = CKGR_UCKR_UPLLCOUNT(PLL_COUNT);
-	} else { /* PLLA */
-		/* Calculate internal VCO frequency */
-		vco_hz = osc_get_rate(e_src) / ul_div;
-		Assert(vco_hz >= PLL_INPUT_MIN_HZ);
-		Assert(vco_hz <= PLL_INPUT_MAX_HZ);
+  if (ul_div == 0 && ul_mul == 0) { /* Must only be true for UTMI PLL */
+    p_cfg->ctrl = CKGR_UCKR_UPLLCOUNT(PLL_COUNT);
+  }
+  else { /* PLLA */
+    /* Calculate internal VCO frequency */
+    vco_hz = osc_get_rate(e_src) / ul_div;
+    Assert(vco_hz >= PLL_INPUT_MIN_HZ);
+    Assert(vco_hz <= PLL_INPUT_MAX_HZ);
 
-		vco_hz *= ul_mul;
-		Assert(vco_hz >= PLL_OUTPUT_MIN_HZ);
-		Assert(vco_hz <= PLL_OUTPUT_MAX_HZ);
+    vco_hz *= ul_mul;
+    Assert(vco_hz >= PLL_OUTPUT_MIN_HZ);
+    Assert(vco_hz <= PLL_OUTPUT_MAX_HZ);
 
-		/* PMC hardware will automatically make it mul+1 */
-		p_cfg->ctrl = CKGR_PLLAR_MULA(ul_mul - 1) | CKGR_PLLAR_DIVA(ul_div) | CKGR_PLLAR_PLLACOUNT(PLL_COUNT);
-	}
+    /* PMC hardware will automatically make it mul+1 */
+    p_cfg->ctrl = CKGR_PLLAR_MULA(ul_mul - 1) | CKGR_PLLAR_DIVA(ul_div) | CKGR_PLLAR_PLLACOUNT(PLL_COUNT);
+  }
 }
 
-#define pll_config_defaults(cfg, pll_id)                                   \
-	pll_config_init(cfg,                                                   \
-			CONFIG_PLL##pll_id##_SOURCE,                                   \
-			CONFIG_PLL##pll_id##_DIV,                                      \
-			CONFIG_PLL##pll_id##_MUL)
+#define pll_config_defaults(cfg, pll_id)  \
+  pll_config_init(cfg,                    \
+      CONFIG_PLL##pll_id##_SOURCE,        \
+      CONFIG_PLL##pll_id##_DIV,           \
+      CONFIG_PLL##pll_id##_MUL)
 
-static inline void pll_config_read(struct pll_config *p_cfg, uint32_t ul_pll_id)
-{
-	Assert(ul_pll_id < NR_PLLS);
-
-	if (ul_pll_id == PLLA_ID) {
-		p_cfg->ctrl = PMC->CKGR_PLLAR;
-	} else {
-		p_cfg->ctrl = PMC->CKGR_UCKR;
-	}
+static inline void pll_config_read(struct pll_config *p_cfg, uint32_t ul_pll_id) {
+  Assert(ul_pll_id < NR_PLLS);
+  p_cfg->ctrl = ul_pll_id == PLLA_ID ? PMC->CKGR_PLLAR : PMC->CKGR_UCKR;
 }
 
-static inline void pll_config_write(const struct pll_config *p_cfg, uint32_t ul_pll_id)
-{
-	Assert(ul_pll_id < NR_PLLS);
+static inline void pll_config_write(const struct pll_config *p_cfg, uint32_t ul_pll_id) {
+  Assert(ul_pll_id < NR_PLLS);
 
-	if (ul_pll_id == PLLA_ID) {
-		pmc_disable_pllack(); // Always stop PLL first!
-		PMC->CKGR_PLLAR = CKGR_PLLAR_ONE | p_cfg->ctrl;
-	} else {
-		PMC->CKGR_UCKR = p_cfg->ctrl;
-	}
+  if (ul_pll_id == PLLA_ID) {
+    pmc_disable_pllack(); // Always stop PLL first!
+    PMC->CKGR_PLLAR = CKGR_PLLAR_ONE | p_cfg->ctrl;
+  }
+  else
+    PMC->CKGR_UCKR = p_cfg->ctrl;
 }
 
-static inline void pll_enable(const struct pll_config *p_cfg, uint32_t ul_pll_id)
-{
-	Assert(ul_pll_id < NR_PLLS);
+static inline void pll_enable(const struct pll_config *p_cfg, uint32_t ul_pll_id) {
+  Assert(ul_pll_id < NR_PLLS);
 
-	if (ul_pll_id == PLLA_ID) {
-		pmc_disable_pllack(); // Always stop PLL first!
-		PMC->CKGR_PLLAR = CKGR_PLLAR_ONE | p_cfg->ctrl;
-	} else {
-		PMC->CKGR_UCKR = p_cfg->ctrl | CKGR_UCKR_UPLLEN;
-	}
+  if (ul_pll_id == PLLA_ID) {
+    pmc_disable_pllack(); // Always stop PLL first!
+    PMC->CKGR_PLLAR = CKGR_PLLAR_ONE | p_cfg->ctrl;
+  }
+  else
+    PMC->CKGR_UCKR = p_cfg->ctrl | CKGR_UCKR_UPLLEN;
 }
 
 /**
  * \note This will only disable the selected PLL, not the underlying oscillator (mainck).
  */
-static inline void pll_disable(uint32_t ul_pll_id)
-{
-	Assert(ul_pll_id < NR_PLLS);
+static inline void pll_disable(uint32_t ul_pll_id) {
+  Assert(ul_pll_id < NR_PLLS);
 
-	if (ul_pll_id == PLLA_ID) {
-		pmc_disable_pllack();
-	} else {
-		PMC->CKGR_UCKR &= ~CKGR_UCKR_UPLLEN;
-	}
+  if (ul_pll_id == PLLA_ID)
+    pmc_disable_pllack();
+  else
+    PMC->CKGR_UCKR &= ~CKGR_UCKR_UPLLEN;
 }
 
-static inline uint32_t pll_is_locked(uint32_t ul_pll_id)
-{
-	Assert(ul_pll_id < NR_PLLS);
+static inline uint32_t pll_is_locked(uint32_t ul_pll_id) {
+  Assert(ul_pll_id < NR_PLLS);
 
-	if (ul_pll_id == PLLA_ID) {
-		return pmc_is_locked_pllack();
-	} else {
-		return pmc_is_locked_upll();
-	}
+  if (ul_pll_id == PLLA_ID)
+    return pmc_is_locked_pllack();
+  else
+    return pmc_is_locked_upll();
 }
 
-static inline void pll_enable_source(enum pll_source e_src)
-{
-	switch (e_src) {
-	case PLL_SRC_MAINCK_4M_RC:
-	case PLL_SRC_MAINCK_8M_RC:
-	case PLL_SRC_MAINCK_12M_RC:
-	case PLL_SRC_MAINCK_XTAL:
-	case PLL_SRC_MAINCK_BYPASS:
-		osc_enable(e_src);
-		osc_wait_ready(e_src);
-		break;
+static inline void pll_enable_source(enum pll_source e_src) {
+  switch (e_src) {
+  case PLL_SRC_MAINCK_4M_RC:
+  case PLL_SRC_MAINCK_8M_RC:
+  case PLL_SRC_MAINCK_12M_RC:
+  case PLL_SRC_MAINCK_XTAL:
+  case PLL_SRC_MAINCK_BYPASS:
+    osc_enable(e_src);
+    osc_wait_ready(e_src);
+    break;
 
-	default:
-		Assert(false);
-		break;
-	}
+  default:
+    Assert(false);
+    break;
+  }
 }
 
-static inline void pll_enable_config_defaults(unsigned int ul_pll_id)
-{
-	struct pll_config pllcfg;
+static inline void pll_enable_config_defaults(unsigned int ul_pll_id) {
+  struct pll_config pllcfg;
 
-	if (pll_is_locked(ul_pll_id)) {
-		return; // Pll already running
-	}
-	switch (ul_pll_id) {
-#ifdef CONFIG_PLL0_SOURCE
-	case 0:
-		pll_enable_source(CONFIG_PLL0_SOURCE);
-		pll_config_init(&pllcfg,
-				CONFIG_PLL0_SOURCE,
-				CONFIG_PLL0_DIV,
-				CONFIG_PLL0_MUL);
-		break;
-#endif
-#ifdef CONFIG_PLL1_SOURCE
-	case 1:
-		pll_enable_source(CONFIG_PLL1_SOURCE);
-		pll_config_init(&pllcfg,
-				CONFIG_PLL1_SOURCE,
-				CONFIG_PLL1_DIV,
-				CONFIG_PLL1_MUL);
-		break;
-#endif
-	default:
-		Assert(false);
-		break;
-	}
-	pll_enable(&pllcfg, ul_pll_id);
-	while (!pll_is_locked(ul_pll_id));
+  if (pll_is_locked(ul_pll_id)) return; // Pll already running
+
+  switch (ul_pll_id) {
+    #ifdef CONFIG_PLL0_SOURCE
+      case 0:
+        pll_enable_source(CONFIG_PLL0_SOURCE);
+        pll_config_init(&pllcfg,
+            CONFIG_PLL0_SOURCE,
+            CONFIG_PLL0_DIV,
+            CONFIG_PLL0_MUL);
+        break;
+    #endif
+    #ifdef CONFIG_PLL1_SOURCE
+      case 1:
+        pll_enable_source(CONFIG_PLL1_SOURCE);
+        pll_config_init(&pllcfg,
+            CONFIG_PLL1_SOURCE,
+            CONFIG_PLL1_DIV,
+            CONFIG_PLL1_MUL);
+        break;
+    #endif
+    default:
+      Assert(false);
+      break;
+  }
+  pll_enable(&pllcfg, ul_pll_id);
+  while (!pll_is_locked(ul_pll_id));
 }
 
 /**
@@ -264,15 +249,12 @@ static inline void pll_enable_config_defaults(unsigned int ul_pll_id)
  * \retval STATUS_OK The PLL is now locked.
  * \retval ERR_TIMEOUT Timed out waiting for PLL to become locked.
  */
-static inline int pll_wait_for_lock(unsigned int pll_id)
-{
-	Assert(pll_id < NR_PLLS);
+static inline int pll_wait_for_lock(unsigned int pll_id) {
+  Assert(pll_id < NR_PLLS);
 
-	while (!pll_is_locked(pll_id)) {
-		/* Do nothing */
-	}
+  while (!pll_is_locked(pll_id)) { /* Do nothing */ }
 
-	return 0;
+  return 0;
 }
 
 //! @}

Marlin/src/HAL/DUE/usb/preprocessor.h

@@ -51,5 +51,4 @@
 #include "stringz.h"
 #include "mrepeat.h"
 
-
 #endif  // _PREPROCESSOR_H_

Marlin/src/HAL/DUE/usb/sbc_protocol.h

@@ -57,7 +57,6 @@
 #ifndef _SBC_PROTOCOL_H_
 #define _SBC_PROTOCOL_H_
 
-
 /**
  * \ingroup usb_msc_protocol
  * \defgroup usb_sbc_protocol SCSI Block Commands protocol definitions
@@ -81,82 +80,81 @@
 //@{
 
 enum scsi_sbc_mode {
-	SCSI_MS_MODE_RW_ERR_RECOV = 0x01,	//!< Read-Write Error Recovery mode page
-	SCSI_MS_MODE_FORMAT_DEVICE = 0x03,	//!< Format Device mode page
-	SCSI_MS_MODE_FLEXIBLE_DISK = 0x05,	//!< Flexible Disk mode page
-	SCSI_MS_MODE_CACHING = 0x08,	//!< Caching mode page
+  SCSI_MS_MODE_RW_ERR_RECOV = 0x01,   //!< Read-Write Error Recovery mode page
+  SCSI_MS_MODE_FORMAT_DEVICE = 0x03,  //!< Format Device mode page
+  SCSI_MS_MODE_FLEXIBLE_DISK = 0x05,  //!< Flexible Disk mode page
+  SCSI_MS_MODE_CACHING = 0x08,    //!< Caching mode page
 };
 
-
 //! \name SBC-2 Device-Specific Parameter
 //@{
-#define SCSI_MS_SBC_WP              0x80	//!< Write Protected
-#define SCSI_MS_SBC_DPOFUA          0x10	//!< DPO and FUA supported
+#define SCSI_MS_SBC_WP              0x80    //!< Write Protected
+#define SCSI_MS_SBC_DPOFUA          0x10    //!< DPO and FUA supported
 //@}
 
 /**
  * \brief SBC-2 Short LBA mode parameter block descriptor
  */
 struct sbc_slba_block_desc {
-	be32_t nr_blocks;	//!< Number of Blocks
-	be32_t block_len;	//!< Block Length
-#define SBC_SLBA_BLOCK_LEN_MASK   0x00FFFFFFU	//!< Mask reserved bits
+  be32_t nr_blocks;   //!< Number of Blocks
+  be32_t block_len;   //!< Block Length
+#define SBC_SLBA_BLOCK_LEN_MASK   0x00FFFFFFU   //!< Mask reserved bits
 };
 
 /**
  * \brief SBC-2 Caching mode page
  */
 struct sbc_caching_mode_page {
-	uint8_t page_code;
-	uint8_t page_length;
-	uint8_t flags2;
-#define  SBC_MP_CACHE_IC      (1 << 7)	//!< Initiator Control
-#define  SBC_MP_CACHE_ABPF    (1 << 6)	//!< Abort Pre-Fetch
-#define  SBC_MP_CACHE_CAP     (1 << 5)	//!< Catching Analysis Permitted
-#define  SBC_MP_CACHE_DISC    (1 << 4)	//!< Discontinuity
-#define  SBC_MP_CACHE_SIZE    (1 << 3)	//!< Size enable
-#define  SBC_MP_CACHE_WCE     (1 << 2)	//!< Write back Cache Enable
-#define  SBC_MP_CACHE_MF      (1 << 1)	//!< Multiplication Factor
-#define  SBC_MP_CACHE_RCD     (1 << 0)	//!< Read Cache Disable
-	uint8_t retention;
-	be16_t dis_pf_transfer_len;
-	be16_t min_prefetch;
-	be16_t max_prefetch;
-	be16_t max_prefetch_ceil;
-	uint8_t flags12;
-#define  SBC_MP_CACHE_FSW     (1 << 7)	//!< Force Sequential Write
-#define  SBC_MP_CACHE_LBCSS   (1 << 6)	//!< Logical Blk Cache Seg Sz
-#define  SBC_MP_CACHE_DRA     (1 << 5)	//!< Disable Read-Ahead
-#define  SBC_MP_CACHE_NV_DIS  (1 << 0)	//!< Non-Volatile Cache Disable
-	uint8_t nr_cache_segments;
-	be16_t cache_segment_size;
-	uint8_t reserved[4];
+  uint8_t page_code;
+  uint8_t page_length;
+  uint8_t flags2;
+#define  SBC_MP_CACHE_IC      (1 << 7)  //!< Initiator Control
+#define  SBC_MP_CACHE_ABPF    (1 << 6)  //!< Abort Pre-Fetch
+#define  SBC_MP_CACHE_CAP     (1 << 5)  //!< Catching Analysis Permitted
+#define  SBC_MP_CACHE_DISC    (1 << 4)  //!< Discontinuity
+#define  SBC_MP_CACHE_SIZE    (1 << 3)  //!< Size enable
+#define  SBC_MP_CACHE_WCE     (1 << 2)  //!< Write back Cache Enable
+#define  SBC_MP_CACHE_MF      (1 << 1)  //!< Multiplication Factor
+#define  SBC_MP_CACHE_RCD     (1 << 0)  //!< Read Cache Disable
+  uint8_t retention;
+  be16_t dis_pf_transfer_len;
+  be16_t min_prefetch;
+  be16_t max_prefetch;
+  be16_t max_prefetch_ceil;
+  uint8_t flags12;
+#define  SBC_MP_CACHE_FSW     (1 << 7)  //!< Force Sequential Write
+#define  SBC_MP_CACHE_LBCSS   (1 << 6)  //!< Logical Blk Cache Seg Sz
+#define  SBC_MP_CACHE_DRA     (1 << 5)  //!< Disable Read-Ahead
+#define  SBC_MP_CACHE_NV_DIS  (1 << 0)  //!< Non-Volatile Cache Disable
+  uint8_t nr_cache_segments;
+  be16_t cache_segment_size;
+  uint8_t reserved[4];
 };
 
 /**
  * \brief SBC-2 Read-Write Error Recovery mode page
  */
 struct sbc_rdwr_error_recovery_mode_page {
-	uint8_t page_code;
-	uint8_t page_length;
-#define  SPC_MP_RW_ERR_RECOV_PAGE_LENGTH    0x0A
-	uint8_t flags1;
-#define  SBC_MP_RW_ERR_RECOV_AWRE   (1 << 7)
-#define  SBC_MP_RW_ERR_RECOV_ARRE   (1 << 6)
-#define  SBC_MP_RW_ERR_RECOV_TB     (1 << 5)
-#define  SBC_MP_RW_ERR_RECOV_RC     (1 << 4)
-#define  SBC_MP_RW_ERR_RECOV_ERR    (1 << 3)
-#define  SBC_MP_RW_ERR_RECOV_PER    (1 << 2)
-#define  SBC_MP_RW_ERR_RECOV_DTE    (1 << 1)
-#define  SBC_MP_RW_ERR_RECOV_DCR    (1 << 0)
-	uint8_t read_retry_count;
-	uint8_t correction_span;
-	uint8_t head_offset_count;
-	uint8_t data_strobe_offset_count;
-	uint8_t flags2;
-	uint8_t write_retry_count;
-	uint8_t flags3;
-	be16_t recovery_time_limit;
+  uint8_t page_code;
+  uint8_t page_length;
+  #define  SPC_MP_RW_ERR_RECOV_PAGE_LENGTH    0x0A
+  uint8_t flags1;
+  #define  SBC_MP_RW_ERR_RECOV_AWRE   (1 << 7)
+  #define  SBC_MP_RW_ERR_RECOV_ARRE   (1 << 6)
+  #define  SBC_MP_RW_ERR_RECOV_TB     (1 << 5)
+  #define  SBC_MP_RW_ERR_RECOV_RC     (1 << 4)
+  #define  SBC_MP_RW_ERR_RECOV_ERR    (1 << 3)
+  #define  SBC_MP_RW_ERR_RECOV_PER    (1 << 2)
+  #define  SBC_MP_RW_ERR_RECOV_DTE    (1 << 1)
+  #define  SBC_MP_RW_ERR_RECOV_DCR    (1 << 0)
+  uint8_t read_retry_count;
+  uint8_t correction_span;
+  uint8_t head_offset_count;
+  uint8_t data_strobe_offset_count;
+  uint8_t flags2;
+  uint8_t write_retry_count;
+  uint8_t flags3;
+  be16_t recovery_time_limit;
 };
 //@}
 
@@ -164,8 +162,8 @@ struct sbc_rdwr_error_recovery_mode_page {
  * \brief SBC-2 READ CAPACITY (10) parameter data
  */
 struct sbc_read_capacity10_data {
-	be32_t max_lba;	//!< LBA of last logical block
-	be32_t block_len;	//!< Number of bytes in the last logical block
+  be32_t max_lba; //!< LBA of last logical block
+  be32_t block_len;   //!< Number of bytes in the last logical block
 };
 
 //@}

Marlin/src/HAL/DUE/usb/sd_mmc_spi_mem.cpp

@@ -6,11 +6,11 @@
 
 #include "../../../inc/MarlinConfig.h"
 
-#if ENABLED(SDSUPPORT)
+#if HAS_MEDIA
 
 #include "../../../sd/cardreader.h"
 extern "C" {
-#include "sd_mmc_spi_mem.h"
+  #include "sd_mmc_spi_mem.h"
 }
 
 #define SD_MMC_BLOCK_SIZE 512
@@ -138,5 +138,5 @@ Ctrl_status sd_mmc_spi_usb_write_10(uint32_t addr, uint16_t nb_sector) {
 
 #endif // ACCESS_USB == true
 
-#endif // SDSUPPORT
+#endif // HAS_MEDIA
 #endif // ARDUINO_ARCH_SAM

Marlin/src/HAL/DUE/usb/sd_mmc_spi_mem.h

@@ -45,7 +45,6 @@
  * Support and FAQ: visit <a href="https://www.atmel.com/design-support/">Atmel Support</a>
  */
 
-
 #ifndef _SD_MMC_SPI_MEM_H_
 #define _SD_MMC_SPI_MEM_H_
 
@@ -63,17 +62,14 @@
   #error sd_mmc_spi_mem.h is #included although SD_MMC_SPI_MEM is disabled
 #endif
 
-
 #include "ctrl_access.h"
 
-
 //_____ D E F I N I T I O N S ______________________________________________
 
 #define   SD_MMC_REMOVED       0
 #define   SD_MMC_INSERTED      1
 #define   SD_MMC_REMOVING      2
 
-
 //---- CONTROL FUNCTIONS ----
 //!
 //! @brief This function initializes the hw/sw resources required to drive the SD_MMC_SPI.
@@ -133,7 +129,6 @@ extern bool           sd_mmc_spi_wr_protect(void);
 //!
 extern bool           sd_mmc_spi_removal(void);
 
-
 //---- ACCESS DATA FUNCTIONS ----
 
 #if ACCESS_USB == true

Marlin/src/HAL/DUE/usb/spc_protocol.h

@@ -59,23 +59,23 @@
 
 //! \name SCSI commands defined by SPC-2
 //@{
-#define  SPC_TEST_UNIT_READY              0x00
-#define  SPC_REQUEST_SENSE                0x03
-#define  SPC_INQUIRY                      0x12
-#define  SPC_MODE_SELECT6                 0x15
-#define  SPC_MODE_SENSE6                  0x1A
-#define  SPC_SEND_DIAGNOSTIC              0x1D
-#define  SPC_PREVENT_ALLOW_MEDIUM_REMOVAL 0x1E
-#define  SPC_MODE_SENSE10                 0x5A
-#define  SPC_REPORT_LUNS                  0xA0
+#define SPC_TEST_UNIT_READY              0x00
+#define SPC_REQUEST_SENSE                0x03
+#define SPC_INQUIRY                      0x12
+#define SPC_MODE_SELECT6                 0x15
+#define SPC_MODE_SENSE6                  0x1A
+#define SPC_SEND_DIAGNOSTIC              0x1D
+#define SPC_PREVENT_ALLOW_MEDIUM_REMOVAL 0x1E
+#define SPC_MODE_SENSE10                 0x5A
+#define SPC_REPORT_LUNS                  0xA0
 //@}
 
 //! \brief May be set in byte 0 of the INQUIRY CDB
 //@{
 //! Enable Vital Product Data
-#define  SCSI_INQ_REQ_EVPD    0x01
+#define SCSI_INQ_REQ_EVPD    0x01
 //! Command Support Data specified by the PAGE OR OPERATION CODE field
-#define  SCSI_INQ_REQ_CMDT    0x02
+#define SCSI_INQ_REQ_CMDT    0x02
 //@}
 
 COMPILER_PACK_SET(1)
@@ -84,110 +84,110 @@ COMPILER_PACK_SET(1)
  * \brief SCSI Standard Inquiry data structure
  */
 struct scsi_inquiry_data {
-	uint8_t pq_pdt; //!< Peripheral Qual / Peripheral Dev Type
-#define  SCSI_INQ_PQ_CONNECTED   0x00   //!< Peripheral connected
-#define  SCSI_INQ_PQ_NOT_CONN    0x20   //!< Peripheral not connected
-#define  SCSI_INQ_PQ_NOT_SUPP    0x60   //!< Peripheral not supported
-#define  SCSI_INQ_DT_DIR_ACCESS  0x00   //!< Direct Access (SBC)
-#define  SCSI_INQ_DT_SEQ_ACCESS  0x01   //!< Sequential Access
-#define  SCSI_INQ_DT_PRINTER     0x02   //!< Printer
-#define  SCSI_INQ_DT_PROCESSOR   0x03   //!< Processor device
-#define  SCSI_INQ_DT_WRITE_ONCE  0x04   //!< Write-once device
-#define  SCSI_INQ_DT_CD_DVD      0x05   //!< CD/DVD device
-#define  SCSI_INQ_DT_OPTICAL     0x07   //!< Optical Memory
-#define  SCSI_INQ_DT_MC          0x08   //!< Medium Changer
-#define  SCSI_INQ_DT_ARRAY       0x0C   //!< Storage Array Controller
-#define  SCSI_INQ_DT_ENCLOSURE   0x0D   //!< Enclosure Services
-#define  SCSI_INQ_DT_RBC         0x0E   //!< Simplified Direct Access
-#define  SCSI_INQ_DT_OCRW        0x0F   //!< Optical card reader/writer
-#define  SCSI_INQ_DT_BCC         0x10   //!< Bridge Controller Commands
-#define  SCSI_INQ_DT_OSD         0x11   //!< Object-based Storage
-#define  SCSI_INQ_DT_NONE        0x1F   //!< No Peripheral
-	uint8_t flags1; //!< Flags (byte 1)
-#define  SCSI_INQ_RMB            0x80   //!< Removable Medium
-	uint8_t version; //!< Version
-#define  SCSI_INQ_VER_NONE       0x00   //!< No standards conformance
-#define  SCSI_INQ_VER_SPC        0x03   //!< SCSI Primary Commands     (link to SBC)
-#define  SCSI_INQ_VER_SPC2       0x04   //!< SCSI Primary Commands - 2 (link to SBC-2)
-#define  SCSI_INQ_VER_SPC3       0x05   //!< SCSI Primary Commands - 3 (link to SBC-2)
-#define  SCSI_INQ_VER_SPC4       0x06   //!< SCSI Primary Commands - 4 (link to SBC-3)
-	uint8_t flags3; //!< Flags (byte 3)
-#define  SCSI_INQ_NORMACA        0x20   //!< Normal ACA Supported
-#define  SCSI_INQ_HISUP          0x10   //!< Hierarchal LUN addressing
-#define  SCSI_INQ_RSP_SPC2       0x02   //!< SPC-2 / SPC-3 response format
-	uint8_t addl_len; //!< Additional Length (n-4)
-#define  SCSI_INQ_ADDL_LEN(tot)  ((tot)-5) //!< Total length is \a tot
-	uint8_t flags5; //!< Flags (byte 5)
-#define  SCSI_INQ_SCCS           0x80
-	uint8_t flags6; //!< Flags (byte 6)
-#define  SCSI_INQ_BQUE           0x80
-#define  SCSI_INQ_ENCSERV        0x40
-#define  SCSI_INQ_MULTIP         0x10
-#define  SCSI_INQ_MCHGR          0x08
-#define  SCSI_INQ_ADDR16         0x01
-	uint8_t flags7; //!< Flags (byte 7)
-#define  SCSI_INQ_WBUS16         0x20
-#define  SCSI_INQ_SYNC           0x10
-#define  SCSI_INQ_LINKED         0x08
-#define  SCSI_INQ_CMDQUE         0x02
-	uint8_t vendor_id[8];   //!< T10 Vendor Identification
-	uint8_t product_id[16]; //!< Product Identification
-	uint8_t product_rev[4]; //!< Product Revision Level
+  uint8_t pq_pdt; //!< Peripheral Qual / Peripheral Dev Type
+  #define SCSI_INQ_PQ_CONNECTED     0x00   //!< Peripheral connected
+  #define SCSI_INQ_PQ_NOT_CONN      0x20   //!< Peripheral not connected
+  #define SCSI_INQ_PQ_NOT_SUPP      0x60   //!< Peripheral not supported
+  #define SCSI_INQ_DT_DIR_ACCESS    0x00   //!< Direct Access (SBC)
+  #define SCSI_INQ_DT_SEQ_ACCESS    0x01   //!< Sequential Access
+  #define SCSI_INQ_DT_PRINTER       0x02   //!< Printer
+  #define SCSI_INQ_DT_PROCESSOR     0x03   //!< Processor device
+  #define SCSI_INQ_DT_WRITE_ONCE    0x04   //!< Write-once device
+  #define SCSI_INQ_DT_CD_DVD        0x05   //!< CD/DVD device
+  #define SCSI_INQ_DT_OPTICAL       0x07   //!< Optical Memory
+  #define SCSI_INQ_DT_MC            0x08   //!< Medium Changer
+  #define SCSI_INQ_DT_ARRAY         0x0C   //!< Storage Array Controller
+  #define SCSI_INQ_DT_ENCLOSURE     0x0D   //!< Enclosure Services
+  #define SCSI_INQ_DT_RBC           0x0E   //!< Simplified Direct Access
+  #define SCSI_INQ_DT_OCRW          0x0F   //!< Optical card reader/writer
+  #define SCSI_INQ_DT_BCC           0x10   //!< Bridge Controller Commands
+  #define SCSI_INQ_DT_OSD           0x11   //!< Object-based Storage
+  #define SCSI_INQ_DT_NONE          0x1F   //!< No Peripheral
+  uint8_t flags1; //!< Flags (byte 1)
+  #define SCSI_INQ_RMB              0x80   //!< Removable Medium
+  uint8_t version; //!< Version
+  #define SCSI_INQ_VER_NONE         0x00   //!< No standards conformance
+  #define SCSI_INQ_VER_SPC          0x03   //!< SCSI Primary Commands     (link to SBC)
+  #define SCSI_INQ_VER_SPC2         0x04   //!< SCSI Primary Commands - 2 (link to SBC-2)
+  #define SCSI_INQ_VER_SPC3         0x05   //!< SCSI Primary Commands - 3 (link to SBC-2)
+  #define SCSI_INQ_VER_SPC4         0x06   //!< SCSI Primary Commands - 4 (link to SBC-3)
+  uint8_t flags3; //!< Flags (byte 3)
+  #define SCSI_INQ_NORMACA          0x20   //!< Normal ACA Supported
+  #define SCSI_INQ_HISUP            0x10   //!< Hierarchal LUN addressing
+  #define SCSI_INQ_RSP_SPC2         0x02   //!< SPC-2 / SPC-3 response format
+  uint8_t addl_len; //!< Additional Length (n-4)
+  #define SCSI_INQ_ADDL_LEN(tot)  ((tot)-5) //!< Total length is \a tot
+  uint8_t flags5; //!< Flags (byte 5)
+  #define SCSI_INQ_SCCS             0x80
+  uint8_t flags6; //!< Flags (byte 6)
+  #define SCSI_INQ_BQUE             0x80
+  #define SCSI_INQ_ENCSERV          0x40
+  #define SCSI_INQ_MULTIP           0x10
+  #define SCSI_INQ_MCHGR            0x08
+  #define SCSI_INQ_ADDR16           0x01
+  uint8_t flags7; //!< Flags (byte 7)
+  #define SCSI_INQ_WBUS16           0x20
+  #define SCSI_INQ_SYNC             0x10
+  #define SCSI_INQ_LINKED           0x08
+  #define SCSI_INQ_CMDQUE           0x02
+  uint8_t vendor_id[8];   //!< T10 Vendor Identification
+  uint8_t product_id[16]; //!< Product Identification
+  uint8_t product_rev[4]; //!< Product Revision Level
 };
 
 /**
  * \brief SCSI Standard Request sense data structure
  */
 struct scsi_request_sense_data {
-	/* 1st byte: REQUEST SENSE response flags*/
-	uint8_t valid_reponse_code;
-#define  SCSI_SENSE_VALID              0x80 //!< Indicates the INFORMATION field contains valid information
-#define  SCSI_SENSE_RESPONSE_CODE_MASK 0x7F
-#define  SCSI_SENSE_CURRENT            0x70 //!< Response code 70h (current errors)
-#define  SCSI_SENSE_DEFERRED           0x71
+  /* 1st byte: REQUEST SENSE response flags*/
+  uint8_t valid_reponse_code;
+  #define SCSI_SENSE_VALID              0x80 //!< Indicates the INFORMATION field contains valid information
+  #define SCSI_SENSE_RESPONSE_CODE_MASK 0x7F
+  #define SCSI_SENSE_CURRENT            0x70 //!< Response code 70h (current errors)
+  #define SCSI_SENSE_DEFERRED           0x71
 
-	/* 2nd byte */
-	uint8_t obsolete;
+  /* 2nd byte */
+  uint8_t obsolete;
 
-	/* 3rd byte */
-	uint8_t sense_flag_key;
-#define  SCSI_SENSE_FILEMARK        0x80 //!< Indicates that the current command has read a filemark or setmark.
-#define  SCSI_SENSE_EOM             0x40 //!< Indicates that an end-of-medium condition exists.
-#define  SCSI_SENSE_ILI             0x20 //!< Indicates that the requested logical block length did not match the logical block length of the data on the medium.
-#define  SCSI_SENSE_RESERVED        0x10 //!< Reserved
-#define  SCSI_SENSE_KEY(x)          (x&0x0F) //!< Sense Key
+  /* 3rd byte */
+  uint8_t sense_flag_key;
+  #define SCSI_SENSE_FILEMARK        0x80 //!< Indicates that the current command has read a filemark or setmark.
+  #define SCSI_SENSE_EOM             0x40 //!< Indicates that an end-of-medium condition exists.
+  #define SCSI_SENSE_ILI             0x20 //!< Indicates that the requested logical block length did not match the logical block length of the data on the medium.
+  #define SCSI_SENSE_RESERVED        0x10 //!< Reserved
+  #define SCSI_SENSE_KEY(x)          (x&0x0F) //!< Sense Key
 
-	/* 4th to 7th bytes - INFORMATION field */
-	uint8_t information[4];
+  /* 4th to 7th bytes - INFORMATION field */
+  uint8_t information[4];
 
-	/* 8th byte  - ADDITIONAL SENSE LENGTH field */
-	uint8_t AddSenseLen;
-#define  SCSI_SENSE_ADDL_LEN(total_len)   ((total_len) - 8)
+  /* 8th byte  - ADDITIONAL SENSE LENGTH field */
+  uint8_t AddSenseLen;
+  #define SCSI_SENSE_ADDL_LEN(total_len)   ((total_len) - 8)
 
-	/* 9th to 12th byte  - COMMAND-SPECIFIC INFORMATION field */
-	uint8_t CmdSpecINFO[4];
+  /* 9th to 12th byte  - COMMAND-SPECIFIC INFORMATION field */
+  uint8_t CmdSpecINFO[4];
 
-	/* 13th byte  - ADDITIONAL SENSE CODE field */
-	uint8_t AddSenseCode;
+  /* 13th byte  - ADDITIONAL SENSE CODE field */
+  uint8_t AddSenseCode;
 
-	/* 14th byte  - ADDITIONAL SENSE CODE QUALIFIER field */
-	uint8_t AddSnsCodeQlfr;
+  /* 14th byte  - ADDITIONAL SENSE CODE QUALIFIER field */
+  uint8_t AddSnsCodeQlfr;
 
-	/* 15th byte  - FIELD REPLACEABLE UNIT CODE field */
-	uint8_t FldReplUnitCode;
+  /* 15th byte  - FIELD REPLACEABLE UNIT CODE field */
+  uint8_t FldReplUnitCode;
 
-	/* 16th byte */
-	uint8_t SenseKeySpec[3];
-#define  SCSI_SENSE_SKSV            0x80 //!< Indicates the SENSE-KEY SPECIFIC field contains valid information
+  /* 16th byte */
+  uint8_t SenseKeySpec[3];
+  #define SCSI_SENSE_SKSV            0x80 //!< Indicates the SENSE-KEY SPECIFIC field contains valid information
 };
 
 COMPILER_PACK_RESET()
 
 /* Vital Product Data page codes */
 enum scsi_vpd_page_code {
-	SCSI_VPD_SUPPORTED_PAGES = 0x00,
-	SCSI_VPD_UNIT_SERIAL_NUMBER = 0x80,
-	SCSI_VPD_DEVICE_IDENTIFICATION = 0x83,
+  SCSI_VPD_SUPPORTED_PAGES = 0x00,
+  SCSI_VPD_UNIT_SERIAL_NUMBER = 0x80,
+  SCSI_VPD_DEVICE_IDENTIFICATION = 0x83,
 };
 #define  SCSI_VPD_HEADER_SIZE       4
 
@@ -200,37 +200,36 @@ enum scsi_vpd_page_code {
 
 #define  SCSI_VPD_ID_TYPE_T10       1
 
-
 /* Sense keys */
 enum scsi_sense_key {
-	SCSI_SK_NO_SENSE = 0x0,
-	SCSI_SK_RECOVERED_ERROR = 0x1,
-	SCSI_SK_NOT_READY = 0x2,
-	SCSI_SK_MEDIUM_ERROR = 0x3,
-	SCSI_SK_HARDWARE_ERROR = 0x4,
-	SCSI_SK_ILLEGAL_REQUEST = 0x5,
-	SCSI_SK_UNIT_ATTENTION = 0x6,
-	SCSI_SK_DATA_PROTECT = 0x7,
-	SCSI_SK_BLANK_CHECK = 0x8,
-	SCSI_SK_VENDOR_SPECIFIC = 0x9,
-	SCSI_SK_COPY_ABORTED = 0xA,
-	SCSI_SK_ABORTED_COMMAND = 0xB,
-	SCSI_SK_VOLUME_OVERFLOW = 0xD,
-	SCSI_SK_MISCOMPARE = 0xE,
+  SCSI_SK_NO_SENSE = 0x0,
+  SCSI_SK_RECOVERED_ERROR = 0x1,
+  SCSI_SK_NOT_READY = 0x2,
+  SCSI_SK_MEDIUM_ERROR = 0x3,
+  SCSI_SK_HARDWARE_ERROR = 0x4,
+  SCSI_SK_ILLEGAL_REQUEST = 0x5,
+  SCSI_SK_UNIT_ATTENTION = 0x6,
+  SCSI_SK_DATA_PROTECT = 0x7,
+  SCSI_SK_BLANK_CHECK = 0x8,
+  SCSI_SK_VENDOR_SPECIFIC = 0x9,
+  SCSI_SK_COPY_ABORTED = 0xA,
+  SCSI_SK_ABORTED_COMMAND = 0xB,
+  SCSI_SK_VOLUME_OVERFLOW = 0xD,
+  SCSI_SK_MISCOMPARE = 0xE,
 };
 
 /* Additional Sense Code / Additional Sense Code Qualifier pairs */
 enum scsi_asc_ascq {
-	SCSI_ASC_NO_ADDITIONAL_SENSE_INFO = 0x0000,
-	SCSI_ASC_LU_NOT_READY_REBUILD_IN_PROGRESS = 0x0405,
-	SCSI_ASC_WRITE_ERROR = 0x0C00,
-	SCSI_ASC_UNRECOVERED_READ_ERROR = 0x1100,
-	SCSI_ASC_INVALID_COMMAND_OPERATION_CODE = 0x2000,
-	SCSI_ASC_INVALID_FIELD_IN_CDB = 0x2400,
-	SCSI_ASC_WRITE_PROTECTED = 0x2700,
-	SCSI_ASC_NOT_READY_TO_READY_CHANGE = 0x2800,
-	SCSI_ASC_MEDIUM_NOT_PRESENT = 0x3A00,
-	SCSI_ASC_INTERNAL_TARGET_FAILURE = 0x4400,
+  SCSI_ASC_NO_ADDITIONAL_SENSE_INFO = 0x0000,
+  SCSI_ASC_LU_NOT_READY_REBUILD_IN_PROGRESS = 0x0405,
+  SCSI_ASC_WRITE_ERROR = 0x0C00,
+  SCSI_ASC_UNRECOVERED_READ_ERROR = 0x1100,
+  SCSI_ASC_INVALID_COMMAND_OPERATION_CODE = 0x2000,
+  SCSI_ASC_INVALID_FIELD_IN_CDB = 0x2400,
+  SCSI_ASC_WRITE_PROTECTED = 0x2700,
+  SCSI_ASC_NOT_READY_TO_READY_CHANGE = 0x2800,
+  SCSI_ASC_MEDIUM_NOT_PRESENT = 0x3A00,
+  SCSI_ASC_INTERNAL_TARGET_FAILURE = 0x4400,
 };
 
 /**
@@ -240,9 +239,9 @@ enum scsi_asc_ascq {
  * that are applicable to all SCSI devices.
  */
 enum scsi_spc_mode {
-	SCSI_MS_MODE_VENDOR_SPEC = 0x00,
-	SCSI_MS_MODE_INFEXP = 0x1C,    // Informational exceptions control page
-	SCSI_MS_MODE_ALL = 0x3F,
+  SCSI_MS_MODE_VENDOR_SPEC = 0x00,
+  SCSI_MS_MODE_INFEXP = 0x1C,    // Informational exceptions control page
+  SCSI_MS_MODE_ALL = 0x3F,
 };
 
 /**
@@ -250,51 +249,45 @@ enum scsi_spc_mode {
  * See chapter 8.3.8
  */
 struct spc_control_page_info_execpt {
-	uint8_t page_code;
-	uint8_t page_length;
-#define  SPC_MP_INFEXP_PAGE_LENGTH     0x0A
-	uint8_t flags1;
-#define  SPC_MP_INFEXP_PERF            (1<<7)   //!< Initiator Control
-#define  SPC_MP_INFEXP_EBF             (1<<5)   //!< Caching Analysis Permitted
-#define  SPC_MP_INFEXP_EWASC           (1<<4)   //!< Discontinuity
-#define  SPC_MP_INFEXP_DEXCPT          (1<<3)   //!< Size enable
-#define  SPC_MP_INFEXP_TEST            (1<<2)   //!< Writeback Cache Enable
-#define  SPC_MP_INFEXP_LOGERR          (1<<0)   //!< Log errors bit
-	uint8_t mrie;
-#define  SPC_MP_INFEXP_MRIE_NO_REPORT           0x00
-#define  SPC_MP_INFEXP_MRIE_ASYNC_EVENT         0x01
-#define  SPC_MP_INFEXP_MRIE_GEN_UNIT            0x02
-#define  SPC_MP_INFEXP_MRIE_COND_RECOV_ERROR    0x03
-#define  SPC_MP_INFEXP_MRIE_UNCOND_RECOV_ERROR  0x04
-#define  SPC_MP_INFEXP_MRIE_NO_SENSE            0x05
-#define  SPC_MP_INFEXP_MRIE_ONLY_REPORT         0x06
-	be32_t interval_timer;
-	be32_t report_count;
+  uint8_t page_code;
+  uint8_t page_length;
+  #define SPC_MP_INFEXP_PAGE_LENGTH             0x0A
+  uint8_t flags1;
+  #define SPC_MP_INFEXP_PERF                    (1<<7)   //!< Initiator Control
+  #define SPC_MP_INFEXP_EBF                     (1<<5)   //!< Caching Analysis Permitted
+  #define SPC_MP_INFEXP_EWASC                   (1<<4)   //!< Discontinuity
+  #define SPC_MP_INFEXP_DEXCPT                  (1<<3)   //!< Size enable
+  #define SPC_MP_INFEXP_TEST                    (1<<2)   //!< Writeback Cache Enable
+  #define SPC_MP_INFEXP_LOGERR                  (1<<0)   //!< Log errors bit
+  uint8_t mrie;
+  #define SPC_MP_INFEXP_MRIE_NO_REPORT          0x00
+  #define SPC_MP_INFEXP_MRIE_ASYNC_EVENT        0x01
+  #define SPC_MP_INFEXP_MRIE_GEN_UNIT           0x02
+  #define SPC_MP_INFEXP_MRIE_COND_RECOV_ERROR   0x03
+  #define SPC_MP_INFEXP_MRIE_UNCOND_RECOV_ERROR 0x04
+  #define SPC_MP_INFEXP_MRIE_NO_SENSE           0x05
+  #define SPC_MP_INFEXP_MRIE_ONLY_REPORT        0x06
+  be32_t interval_timer;
+  be32_t report_count;
 };
 
-
 enum scsi_spc_mode_sense_pc {
-	SCSI_MS_SENSE_PC_CURRENT = 0,
-	SCSI_MS_SENSE_PC_CHANGEABLE = 1,
-	SCSI_MS_SENSE_PC_DEFAULT = 2,
-	SCSI_MS_SENSE_PC_SAVED = 3,
+  SCSI_MS_SENSE_PC_CURRENT = 0,
+  SCSI_MS_SENSE_PC_CHANGEABLE = 1,
+  SCSI_MS_SENSE_PC_DEFAULT = 2,
+  SCSI_MS_SENSE_PC_SAVED = 3,
 };
 
-
-
-static inline bool scsi_mode_sense_dbd_is_set(const uint8_t * cdb)
-{
-	return (cdb[1] >> 3) & 1;
+static inline bool scsi_mode_sense_dbd_is_set(const uint8_t * cdb) {
+  return (cdb[1] >> 3) & 1;
 }
 
-static inline uint8_t scsi_mode_sense_get_page_code(const uint8_t * cdb)
-{
-	return cdb[2] & 0x3F;
+static inline uint8_t scsi_mode_sense_get_page_code(const uint8_t * cdb) {
+  return cdb[2] & 0x3F;
 }
 
-static inline uint8_t scsi_mode_sense_get_pc(const uint8_t * cdb)
-{
-	return cdb[2] >> 6;
+static inline uint8_t scsi_mode_sense_get_pc(const uint8_t * cdb) {
+  return cdb[2] >> 6;
 }
 
 /**
@@ -302,10 +295,10 @@ static inline uint8_t scsi_mode_sense_get_pc(const uint8_t * cdb)
  * SENSE(6)
  */
 struct scsi_mode_param_header6 {
-	uint8_t mode_data_length;	//!< Number of bytes after this
-	uint8_t medium_type;	//!< Medium Type
-	uint8_t device_specific_parameter;	//!< Defined by command set
-	uint8_t block_descriptor_length;	//!< Length of block descriptors
+  uint8_t mode_data_length; //!< Number of bytes after this
+  uint8_t medium_type;  //!< Medium Type
+  uint8_t device_specific_parameter;  //!< Defined by command set
+  uint8_t block_descriptor_length;  //!< Length of block descriptors
 };
 
 /**
@@ -313,23 +306,23 @@ struct scsi_mode_param_header6 {
  * SENSE(10)
  */
 struct scsi_mode_param_header10 {
-	be16_t mode_data_length;	//!< Number of bytes after this
-	uint8_t medium_type;	//!< Medium Type
-	uint8_t device_specific_parameter;	//!< Defined by command set
-	uint8_t flags4;	//!< LONGLBA in bit 0
-	uint8_t reserved;
-	be16_t block_descriptor_length;	//!< Length of block descriptors
+  be16_t mode_data_length;  //!< Number of bytes after this
+  uint8_t medium_type;  //!< Medium Type
+  uint8_t device_specific_parameter;  //!< Defined by command set
+  uint8_t flags4; //!< LONGLBA in bit 0
+  uint8_t reserved;
+  be16_t block_descriptor_length; //!< Length of block descriptors
 };
 
 /**
  * \brief SCSI Page_0 Mode Page header (SPF not set)
  */
 struct scsi_mode_page_0_header {
-	uint8_t page_code;
-#define  SCSI_PAGE_CODE_PS          (1 << 7)	//!< Parameters Saveable
-#define  SCSI_PAGE_CODE_SPF         (1 << 6)	//!< SubPage Format
-	uint8_t page_length;	//!< Number of bytes after this
-#define  SCSI_MS_PAGE_LEN(total)   ((total) - 2)
+  uint8_t page_code;
+#define SCSI_PAGE_CODE_PS          (1 << 7)  //!< Parameters Saveable
+#define SCSI_PAGE_CODE_SPF         (1 << 6)  //!< SubPage Format
+  uint8_t page_length;  //!< Number of bytes after this
+#define SCSI_MS_PAGE_LEN(total)   ((total) - 2)
 };
 
 //@}

Marlin/src/HAL/DUE/usb/sysclk.h

@@ -71,7 +71,7 @@
  * \subsection sysclk_quickstart_use_case_1_setup_steps Initialization code
  * Add to the application initialization code:
  * \code
-	sysclk_init();
+  sysclk_init();
 \endcode
  *
  * \subsection sysclk_quickstart_use_case_1_setup_steps_workflow Workflow
@@ -82,15 +82,15 @@
  *   Add or uncomment the following in your conf_clock.h header file, commenting out all other
  *   definitions of the same symbol(s):
  *   \code
-	   #define CONFIG_SYSCLK_SOURCE        SYSCLK_SRC_PLLACK
+     #define CONFIG_SYSCLK_SOURCE        SYSCLK_SRC_PLLACK
 
-	   // Fpll0 = (Fclk * PLL_mul) / PLL_div
-	   #define CONFIG_PLL0_SOURCE          PLL_SRC_MAINCK_XTAL
-	   #define CONFIG_PLL0_MUL             (84000000UL / BOARD_FREQ_MAINCK_XTAL)
-	   #define CONFIG_PLL0_DIV             1
+     // Fpll0 = (Fclk * PLL_mul) / PLL_div
+     #define CONFIG_PLL0_SOURCE          PLL_SRC_MAINCK_XTAL
+     #define CONFIG_PLL0_MUL             (84000000UL / BOARD_FREQ_MAINCK_XTAL)
+     #define CONFIG_PLL0_DIV             1
 
-	   // Fbus = Fsys / BUS_div
-	   #define CONFIG_SYSCLK_PRES          SYSCLK_PRES_1
+     // Fbus = Fsys / BUS_div
+     #define CONFIG_SYSCLK_PRES          SYSCLK_PRES_1
 \endcode
  *
  * \subsection sysclk_quickstart_use_case_1_example_workflow Workflow
@@ -100,14 +100,14 @@
  *   \code #define CONFIG_PLL0_SOURCE            PLL_SRC_MAINCK_XTAL \endcode
  *  -# Configure the PLL module to multiply the external fast crystal oscillator frequency up to 84MHz:
  *   \code
-	#define CONFIG_PLL0_MUL             (84000000UL / BOARD_FREQ_MAINCK_XTAL)
-	#define CONFIG_PLL0_DIV             1
+  #define CONFIG_PLL0_MUL             (84000000UL / BOARD_FREQ_MAINCK_XTAL)
+  #define CONFIG_PLL0_DIV             1
 \endcode
  *   \note For user boards, \c BOARD_FREQ_MAINCK_XTAL should be defined in the board \c conf_board.h configuration
  *         file as the frequency of the fast crystal attached to the microcontroller.
  *  -# Configure the main clock to run at the full 84MHz, disable scaling of the main system clock speed:
  *    \code
-	#define CONFIG_SYSCLK_PRES         SYSCLK_PRES_1
+  #define CONFIG_SYSCLK_PRES         SYSCLK_PRES_1
 \endcode
  *    \note Some dividers are powers of two, while others are integer division factors. Refer to the
  *          formulas in the conf_clock.h template commented above each division define.
@@ -136,7 +136,7 @@ extern "C" {
  * initialization.
  */
 #ifndef CONFIG_SYSCLK_SOURCE
-# define CONFIG_SYSCLK_SOURCE   SYSCLK_SRC_MAINCK_4M_RC
+  #define CONFIG_SYSCLK_SOURCE   SYSCLK_SRC_MAINCK_4M_RC
 #endif
 /**
  * \def CONFIG_SYSCLK_PRES
@@ -149,7 +149,7 @@ extern "C" {
  * after initialization.
  */
 #ifndef CONFIG_SYSCLK_PRES
-# define CONFIG_SYSCLK_PRES  0
+  #define CONFIG_SYSCLK_PRES  0
 #endif
 
 //@}
@@ -197,7 +197,7 @@ extern "C" {
  * USB is not required.
  */
 #ifdef __DOXYGEN__
-# define CONFIG_USBCLK_SOURCE
+  #define CONFIG_USBCLK_SOURCE
 #endif
 
 /**
@@ -209,10 +209,9 @@ extern "C" {
  * defined.
  */
 #ifdef __DOXYGEN__
-# define CONFIG_USBCLK_DIV
+  #define CONFIG_USBCLK_DIV
 #endif
 
-
 extern void sysclk_enable_usb(void);
 extern void sysclk_disable_usb(void);
 

Marlin/src/HAL/DUE/usb/udc.c

@@ -83,7 +83,6 @@ static usb_iface_desc_t UDC_DESC_STORAGE *udc_ptr_iface;
 
 //! @}
 
-
 //! \name Internal structure to store the USB device main strings
 //! @{
 

Marlin/src/HAL/DUE/usb/udc.h

@@ -144,15 +144,15 @@ extern "C" {
  * \code #define USB_DEVICE_ATTACH_AUTO_DISABLE \endcode
  * User C file contains:
  * \code
-	// Authorize VBUS monitoring
-	if (!udc_include_vbus_monitoring()) {
-	  // Implement custom VBUS monitoring via GPIO or other
-	}
-	Event_VBUS_present() // VBUS interrupt or GPIO interrupt or other
-	{
-	  // Attach USB Device
-	  udc_attach();
-	}
+  // Authorize VBUS monitoring
+  if (!udc_include_vbus_monitoring()) {
+    // Implement custom VBUS monitoring via GPIO or other
+  }
+  Event_VBUS_present() // VBUS interrupt or GPIO interrupt or other
+  {
+    // Attach USB Device
+    udc_attach();
+  }
 \endcode
  *
  * - Case of battery charging. conf_usb.h file contains define
@@ -160,21 +160,20 @@ extern "C" {
  * \code #define USB_DEVICE_ATTACH_AUTO_DISABLE \endcode
  * User C file contains:
  * \code
-	Event VBUS present() // VBUS interrupt or GPIO interrupt or ..
-	{
-	  // Authorize battery charging, but wait key press to start USB.
-	}
-	Event Key press()
-	{
-	  // Stop batteries charging
-	  // Start USB
-	  udc_attach();
-	}
+  Event VBUS present() // VBUS interrupt or GPIO interrupt or ..
+  {
+    // Authorize battery charging, but wait key press to start USB.
+  }
+  Event Key press()
+  {
+    // Stop batteries charging
+    // Start USB
+    udc_attach();
+  }
 \endcode
  */
-static inline bool udc_include_vbus_monitoring(void)
-{
-	return udd_include_vbus_monitoring();
+static inline bool udc_include_vbus_monitoring(void) {
+  return udd_include_vbus_monitoring();
 }
 
 /*! \brief Start the USB Device stack
@@ -192,32 +191,26 @@ void udc_stop(void);
  * then it will attach device when an acceptable Vbus
  * level from the host is detected.
  */
-static inline void udc_attach(void)
-{
-	udd_attach();
+static inline void udc_attach(void) {
+  udd_attach();
 }
 
-
 /**
  * \brief Detaches the device from the bus
  *
  * The driver must remove pull-up on USB line D- or D+.
  */
-static inline void udc_detach(void)
-{
-	udd_detach();
+static inline void udc_detach(void) {
+  udd_detach();
 }
 
-
 /*! \brief The USB driver sends a resume signal called \e "Upstream Resume"
  * This is authorized only when the remote wakeup feature is enabled by host.
  */
-static inline void udc_remotewakeup(void)
-{
-	udd_send_remotewakeup();
+static inline void udc_remotewakeup(void) {
+  udd_send_remotewakeup();
 }
 
-
 /**
  * \brief Returns a pointer on the current interface descriptor
  *
@@ -296,23 +289,23 @@ usb_iface_desc_t UDC_DESC_STORAGE *udc_get_interface_desc(void);
  *
  * for AVR and SAM3/4 devices, add to the initialization code:
  * \code
-	sysclk_init();
-	irq_initialize_vectors();
-	cpu_irq_enable();
-	board_init();
-	sleepmgr_init(); // Optional
+  sysclk_init();
+  irq_initialize_vectors();
+  cpu_irq_enable();
+  board_init();
+  sleepmgr_init(); // Optional
 \endcode
  *
  * For SAMD devices, add to the initialization code:
  * \code
-	system_init();
-	irq_initialize_vectors();
-	cpu_irq_enable();
-	sleepmgr_init(); // Optional
+  system_init();
+  irq_initialize_vectors();
+  cpu_irq_enable();
+  sleepmgr_init(); // Optional
 \endcode
  * Add to the main IDLE loop:
  * \code
-	sleepmgr_enter_sleep(); // Optional
+  sleepmgr_enter_sleep(); // Optional
 \endcode
  *
  */
@@ -324,20 +317,20 @@ usb_iface_desc_t UDC_DESC_STORAGE *udc_get_interface_desc(void);
  *
  * Content of conf_usb.h:
  * \code
-	#define USB_DEVICE_VENDOR_ID 0x03EB
-	#define USB_DEVICE_PRODUCT_ID 0xXXXX
-	#define USB_DEVICE_MAJOR_VERSION 1
-	#define USB_DEVICE_MINOR_VERSION 0
-	#define USB_DEVICE_POWER 100
-	#define USB_DEVICE_ATTR USB_CONFIG_ATTR_BUS_POWERED
+  #define USB_DEVICE_VENDOR_ID 0x03EB
+  #define USB_DEVICE_PRODUCT_ID 0xXXXX
+  #define USB_DEVICE_MAJOR_VERSION 1
+  #define USB_DEVICE_MINOR_VERSION 0
+  #define USB_DEVICE_POWER 100
+  #define USB_DEVICE_ATTR USB_CONFIG_ATTR_BUS_POWERED
 \endcode
  *
  * Add to application C-file:
  * \code
-	void usb_init(void)
-	{
-	  udc_start();
-	}
+  void usb_init(void)
+  {
+    udc_start();
+  }
 \endcode
  */
 
@@ -349,17 +342,17 @@ usb_iface_desc_t UDC_DESC_STORAGE *udc_get_interface_desc(void);
  * -# Ensure that conf_usb.h is available and contains the following configuration
  * which is the main USB device configuration:
  *   - \code // Vendor ID provided by USB org (ATMEL 0x03EB)
-	#define USB_DEVICE_VENDOR_ID 0x03EB // Type Word
-	// Product ID (Atmel PID referenced in usb_atmel.h)
-	#define USB_DEVICE_PRODUCT_ID 0xXXXX // Type Word
-	// Major version of the device
-	#define USB_DEVICE_MAJOR_VERSION 1 // Type Byte
-	// Minor version of the device
-	#define USB_DEVICE_MINOR_VERSION 0 // Type Byte
-	// Maximum device power (mA)
-	#define USB_DEVICE_POWER 100 // Type 9-bits
-	// USB attributes to enable features
-	#define USB_DEVICE_ATTR USB_CONFIG_ATTR_BUS_POWERED // Flags \endcode
+  #define USB_DEVICE_VENDOR_ID 0x03EB // Type Word
+  // Product ID (Atmel PID referenced in usb_atmel.h)
+  #define USB_DEVICE_PRODUCT_ID 0xXXXX // Type Word
+  // Major version of the device
+  #define USB_DEVICE_MAJOR_VERSION 1 // Type Byte
+  // Minor version of the device
+  #define USB_DEVICE_MINOR_VERSION 0 // Type Byte
+  // Maximum device power (mA)
+  #define USB_DEVICE_POWER 100 // Type 9-bits
+  // USB attributes to enable features
+  #define USB_DEVICE_ATTR USB_CONFIG_ATTR_BUS_POWERED // Flags \endcode
  * -# Call the USB device stack start function to enable stack and start USB:
  *   - \code udc_start(); \endcode
  *     \note In case of USB dual roles (Device and Host) managed through USB OTG connector
@@ -372,90 +365,90 @@ usb_iface_desc_t UDC_DESC_STORAGE *udc_get_interface_desc(void);
  *
  * Content of XMEGA conf_clock.h:
  * \code
-	// Configuration based on internal RC:
-	// USB clock need of 48Mhz
-	#define CONFIG_USBCLK_SOURCE        USBCLK_SRC_RCOSC
-	#define CONFIG_OSC_RC32_CAL         48000000UL
-	#define CONFIG_OSC_AUTOCAL_RC32MHZ_REF_OSC  OSC_ID_USBSOF
-	// CPU clock need of clock > 12MHz to run with USB (Here 24MHz)
-	#define CONFIG_SYSCLK_SOURCE     SYSCLK_SRC_RC32MHZ
-	#define CONFIG_SYSCLK_PSADIV     SYSCLK_PSADIV_2
-	#define CONFIG_SYSCLK_PSBCDIV    SYSCLK_PSBCDIV_1_1
+  // Configuration based on internal RC:
+  // USB clock need of 48Mhz
+  #define CONFIG_USBCLK_SOURCE        USBCLK_SRC_RCOSC
+  #define CONFIG_OSC_RC32_CAL         48000000UL
+  #define CONFIG_OSC_AUTOCAL_RC32MHZ_REF_OSC  OSC_ID_USBSOF
+  // CPU clock need of clock > 12MHz to run with USB (Here 24MHz)
+  #define CONFIG_SYSCLK_SOURCE     SYSCLK_SRC_RC32MHZ
+  #define CONFIG_SYSCLK_PSADIV     SYSCLK_PSADIV_2
+  #define CONFIG_SYSCLK_PSBCDIV    SYSCLK_PSBCDIV_1_1
 \endcode
  *
  * Content of conf_clock.h for AT32UC3A0, AT32UC3A1, AT32UC3B devices (USBB):
  * \code
-	// Configuration based on 12MHz external OSC:
-	#define CONFIG_PLL1_SOURCE          PLL_SRC_OSC0
-	#define CONFIG_PLL1_MUL             8
-	#define CONFIG_PLL1_DIV             2
-	#define CONFIG_USBCLK_SOURCE        USBCLK_SRC_PLL1
-	#define CONFIG_USBCLK_DIV           1 // Fusb = Fsys/(2 ^ USB_div)
+  // Configuration based on 12MHz external OSC:
+  #define CONFIG_PLL1_SOURCE          PLL_SRC_OSC0
+  #define CONFIG_PLL1_MUL             8
+  #define CONFIG_PLL1_DIV             2
+  #define CONFIG_USBCLK_SOURCE        USBCLK_SRC_PLL1
+  #define CONFIG_USBCLK_DIV           1 // Fusb = Fsys/(2 ^ USB_div)
 \endcode
  *
  * Content of conf_clock.h for AT32UC3A3, AT32UC3A4 devices (USBB with high speed support):
  * \code
-	// Configuration based on 12MHz external OSC:
-	#define CONFIG_USBCLK_SOURCE        USBCLK_SRC_OSC0
-	#define CONFIG_USBCLK_DIV           1 // Fusb = Fsys/(2 ^ USB_div)
+  // Configuration based on 12MHz external OSC:
+  #define CONFIG_USBCLK_SOURCE        USBCLK_SRC_OSC0
+  #define CONFIG_USBCLK_DIV           1 // Fusb = Fsys/(2 ^ USB_div)
 \endcode
  *
  * Content of conf_clock.h for AT32UC3C, ATUCXXD, ATUCXXL3U, ATUCXXL4U devices (USBC):
  * \code
-	// Configuration based on 12MHz external OSC:
-	#define CONFIG_PLL1_SOURCE          PLL_SRC_OSC0
-	#define CONFIG_PLL1_MUL             8
-	#define CONFIG_PLL1_DIV             2
-	#define CONFIG_USBCLK_SOURCE        USBCLK_SRC_PLL1
-	#define CONFIG_USBCLK_DIV           1 // Fusb = Fsys/(2 ^ USB_div)
-	// CPU clock need of clock > 25MHz to run with USBC
-	#define CONFIG_SYSCLK_SOURCE        SYSCLK_SRC_PLL1
+  // Configuration based on 12MHz external OSC:
+  #define CONFIG_PLL1_SOURCE          PLL_SRC_OSC0
+  #define CONFIG_PLL1_MUL             8
+  #define CONFIG_PLL1_DIV             2
+  #define CONFIG_USBCLK_SOURCE        USBCLK_SRC_PLL1
+  #define CONFIG_USBCLK_DIV           1 // Fusb = Fsys/(2 ^ USB_div)
+  // CPU clock need of clock > 25MHz to run with USBC
+  #define CONFIG_SYSCLK_SOURCE        SYSCLK_SRC_PLL1
 \endcode
  *
  * Content of conf_clock.h for SAM3S, SAM3SD, SAM4S devices (UPD: USB Peripheral Device):
  * \code
-	// PLL1 (B) Options   (Fpll = (Fclk * PLL_mul) / PLL_div)
-	#define CONFIG_PLL1_SOURCE          PLL_SRC_MAINCK_XTAL
-	#define CONFIG_PLL1_MUL             16
-	#define CONFIG_PLL1_DIV             2
-	// USB Clock Source Options   (Fusb = FpllX / USB_div)
-	#define CONFIG_USBCLK_SOURCE        USBCLK_SRC_PLL1
-	#define CONFIG_USBCLK_DIV           2
+  // PLL1 (B) Options   (Fpll = (Fclk * PLL_mul) / PLL_div)
+  #define CONFIG_PLL1_SOURCE          PLL_SRC_MAINCK_XTAL
+  #define CONFIG_PLL1_MUL             16
+  #define CONFIG_PLL1_DIV             2
+  // USB Clock Source Options   (Fusb = FpllX / USB_div)
+  #define CONFIG_USBCLK_SOURCE        USBCLK_SRC_PLL1
+  #define CONFIG_USBCLK_DIV           2
 \endcode
  *
  * Content of conf_clock.h for SAM3U device (UPDHS: USB Peripheral Device High Speed):
  * \code
-	// USB Clock Source fixed at UPLL.
+  // USB Clock Source fixed at UPLL.
 \endcode
  *
  * Content of conf_clock.h for SAM3X, SAM3A devices (UOTGHS: USB OTG High Speed):
  * \code
-	// USB Clock Source fixed at UPLL.
-	#define CONFIG_USBCLK_SOURCE        USBCLK_SRC_UPLL
-	#define CONFIG_USBCLK_DIV           1
+  // USB Clock Source fixed at UPLL.
+  #define CONFIG_USBCLK_SOURCE        USBCLK_SRC_UPLL
+  #define CONFIG_USBCLK_DIV           1
 \endcode
  *
  * Content of conf_clocks.h for SAMD devices (USB):
  * \code
-	// System clock bus configuration
-	#  define CONF_CLOCK_FLASH_WAIT_STATES            2
+  // System clock bus configuration
+  #  define CONF_CLOCK_FLASH_WAIT_STATES            2
 
-	// USB Clock Source fixed at DFLL.
-	// SYSTEM_CLOCK_SOURCE_DFLL configuration - Digital Frequency Locked Loop
-	#  define CONF_CLOCK_DFLL_ENABLE                  true
-	#  define CONF_CLOCK_DFLL_LOOP_MODE               SYSTEM_CLOCK_DFLL_LOOP_MODE_USB_RECOVERY
-	#  define CONF_CLOCK_DFLL_ON_DEMAND               true
+  // USB Clock Source fixed at DFLL.
+  // SYSTEM_CLOCK_SOURCE_DFLL configuration - Digital Frequency Locked Loop
+  #  define CONF_CLOCK_DFLL_ENABLE                  true
+  #  define CONF_CLOCK_DFLL_LOOP_MODE               SYSTEM_CLOCK_DFLL_LOOP_MODE_USB_RECOVERY
+  #  define CONF_CLOCK_DFLL_ON_DEMAND               true
 
-	// Set this to true to configure the GCLK when running clocks_init.
-	// If set to false, none of the GCLK generators will be configured in clocks_init().
-	#  define CONF_CLOCK_CONFIGURE_GCLK               true
+  // Set this to true to configure the GCLK when running clocks_init.
+  // If set to false, none of the GCLK generators will be configured in clocks_init().
+  #  define CONF_CLOCK_CONFIGURE_GCLK               true
 
-	// Configure GCLK generator 0 (Main Clock)
-	#  define CONF_CLOCK_GCLK_0_ENABLE                true
-	#  define CONF_CLOCK_GCLK_0_RUN_IN_STANDBY        true
-	#  define CONF_CLOCK_GCLK_0_CLOCK_SOURCE          SYSTEM_CLOCK_SOURCE_DFLL
-	#  define CONF_CLOCK_GCLK_0_PRESCALER             1
-	#  define CONF_CLOCK_GCLK_0_OUTPUT_ENABLE         false
+  // Configure GCLK generator 0 (Main Clock)
+  #  define CONF_CLOCK_GCLK_0_ENABLE                true
+  #  define CONF_CLOCK_GCLK_0_RUN_IN_STANDBY        true
+  #  define CONF_CLOCK_GCLK_0_CLOCK_SOURCE          SYSTEM_CLOCK_SOURCE_DFLL
+  #  define CONF_CLOCK_GCLK_0_PRESCALER             1
+  #  define CONF_CLOCK_GCLK_0_OUTPUT_ENABLE         false
 \endcode
  */
 
@@ -474,34 +467,34 @@ usb_iface_desc_t UDC_DESC_STORAGE *udc_get_interface_desc(void);
  * \subsection udc_use_case_1_usage_code Example code
  * Content of conf_usb.h:
  * \code
-	 #if // Low speed
-	 #define USB_DEVICE_LOW_SPEED
-	 // #define USB_DEVICE_HS_SUPPORT
+   #if // Low speed
+   #define USB_DEVICE_LOW_SPEED
+   // #define USB_DEVICE_HS_SUPPORT
 
-	 #elif // Full speed
-	 // #define USB_DEVICE_LOW_SPEED
-	 // #define USB_DEVICE_HS_SUPPORT
+   #elif // Full speed
+   // #define USB_DEVICE_LOW_SPEED
+   // #define USB_DEVICE_HS_SUPPORT
 
-	 #elif // High speed
-	 // #define USB_DEVICE_LOW_SPEED
-	 #define USB_DEVICE_HS_SUPPORT
+   #elif // High speed
+   // #define USB_DEVICE_LOW_SPEED
+   #define USB_DEVICE_HS_SUPPORT
 
-	 #endif
+   #endif
 \endcode
  *
  * \subsection udc_use_case_1_usage_flow Workflow
  * -# Ensure that conf_usb.h is available and contains the following parameters
  * required for a USB device low speed (1.5Mbit/s):
  *   - \code #define USB_DEVICE_LOW_SPEED
-	 //#define  USB_DEVICE_HS_SUPPORT \endcode
+   //#define  USB_DEVICE_HS_SUPPORT \endcode
  * -# Ensure that conf_usb.h contains the following parameters
  * required for a USB device full speed (12Mbit/s):
  *   - \code //#define USB_DEVICE_LOW_SPEED
-	 //#define  USB_DEVICE_HS_SUPPORT \endcode
+   //#define  USB_DEVICE_HS_SUPPORT \endcode
  * -# Ensure that conf_usb.h contains the following parameters
  * required for a USB device high speed (480Mbit/s):
  *   - \code //#define USB_DEVICE_LOW_SPEED
-	 #define  USB_DEVICE_HS_SUPPORT \endcode
+   #define  USB_DEVICE_HS_SUPPORT \endcode
  */
 
 /**
@@ -518,20 +511,20 @@ usb_iface_desc_t UDC_DESC_STORAGE *udc_get_interface_desc(void);
  * \subsection udc_use_case_2_usage_code Example code
  * Content of conf_usb.h:
  * \code
-	#define  USB_DEVICE_MANUFACTURE_NAME      "Manufacture name"
-	#define  USB_DEVICE_PRODUCT_NAME          "Product name"
-	#define  USB_DEVICE_SERIAL_NAME           "12...EF"
+  #define  USB_DEVICE_MANUFACTURE_NAME      "Manufacture name"
+  #define  USB_DEVICE_PRODUCT_NAME          "Product name"
+  #define  USB_DEVICE_SERIAL_NAME           "12...EF"
 \endcode
  *
  * \subsection udc_use_case_2_usage_flow Workflow
  * -# Ensure that conf_usb.h is available and contains the following parameters
  * required to enable different USB strings:
  *   - \code // Static ASCII name for the manufacture
-	#define  USB_DEVICE_MANUFACTURE_NAME "Manufacture name" \endcode
+  #define  USB_DEVICE_MANUFACTURE_NAME "Manufacture name" \endcode
  *   - \code // Static ASCII name for the product
-	#define  USB_DEVICE_PRODUCT_NAME "Product name" \endcode
+  #define  USB_DEVICE_PRODUCT_NAME "Product name" \endcode
  *   - \code // Static ASCII name to enable and set a serial number
-	#define  USB_DEVICE_SERIAL_NAME "12...EF" \endcode
+  #define  USB_DEVICE_SERIAL_NAME "12...EF" \endcode
  */
 
 /**
@@ -548,42 +541,42 @@ usb_iface_desc_t UDC_DESC_STORAGE *udc_get_interface_desc(void);
  * \subsection udc_use_case_3_usage_code Example code
  * Content of conf_usb.h:
  * \code
-	#define  USB_DEVICE_ATTR \
-	  (USB_CONFIG_ATTR_REMOTE_WAKEUP | USB_CONFIG_ATTR_..._POWERED)
-	#define UDC_REMOTEWAKEUP_ENABLE() my_callback_remotewakeup_enable()
-	extern void my_callback_remotewakeup_enable(void);
-	#define UDC_REMOTEWAKEUP_DISABLE() my_callback_remotewakeup_disable()
-	extern void my_callback_remotewakeup_disable(void);
+  #define  USB_DEVICE_ATTR \
+    (USB_CONFIG_ATTR_REMOTE_WAKEUP | USB_CONFIG_ATTR_..._POWERED)
+  #define UDC_REMOTEWAKEUP_ENABLE() my_callback_remotewakeup_enable()
+  extern void my_callback_remotewakeup_enable(void);
+  #define UDC_REMOTEWAKEUP_DISABLE() my_callback_remotewakeup_disable()
+  extern void my_callback_remotewakeup_disable(void);
 \endcode
  *
  * Add to application C-file:
  * \code
-	 void my_callback_remotewakeup_enable(void)
-	 {
-	    // Enable application wakeup events (e.g. enable GPIO interrupt)
-	 }
-	 void my_callback_remotewakeup_disable(void)
-	 {
-	    // Disable application wakeup events (e.g. disable GPIO interrupt)
-	 }
+   void my_callback_remotewakeup_enable(void)
+   {
+      // Enable application wakeup events (e.g. enable GPIO interrupt)
+   }
+   void my_callback_remotewakeup_disable(void)
+   {
+      // Disable application wakeup events (e.g. disable GPIO interrupt)
+   }
 
-	 void my_interrupt_event(void)
-	 {
-	    udc_remotewakeup();
-	 }
+   void my_interrupt_event(void)
+   {
+      udc_remotewakeup();
+   }
 \endcode
  *
  * \subsection udc_use_case_3_usage_flow Workflow
  * -# Ensure that conf_usb.h is available and contains the following parameters
  * required to enable remote wakeup feature:
  *   - \code // Authorizes the remote wakeup feature
-	     #define  USB_DEVICE_ATTR (USB_CONFIG_ATTR_REMOTE_WAKEUP | USB_CONFIG_ATTR_..._POWERED) \endcode
+       #define  USB_DEVICE_ATTR (USB_CONFIG_ATTR_REMOTE_WAKEUP | USB_CONFIG_ATTR_..._POWERED) \endcode
  *   - \code // Define callback called when the host enables the remotewakeup feature
-	#define UDC_REMOTEWAKEUP_ENABLE() my_callback_remotewakeup_enable()
-	extern void my_callback_remotewakeup_enable(void); \endcode
+  #define UDC_REMOTEWAKEUP_ENABLE() my_callback_remotewakeup_enable()
+  extern void my_callback_remotewakeup_enable(void); \endcode
  *   - \code // Define callback called when the host disables the remotewakeup feature
-	#define UDC_REMOTEWAKEUP_DISABLE() my_callback_remotewakeup_disable()
-	extern void my_callback_remotewakeup_disable(void); \endcode
+  #define UDC_REMOTEWAKEUP_DISABLE() my_callback_remotewakeup_disable()
+  extern void my_callback_remotewakeup_disable(void); \endcode
  * -# Send a remote wakeup (USB upstream):
  *   - \code udc_remotewakeup(); \endcode
  */
@@ -603,40 +596,40 @@ usb_iface_desc_t UDC_DESC_STORAGE *udc_get_interface_desc(void);
  * \subsection udc_use_case_5_usage_code Example code
  * Content of conf_usb.h:
  * \code
-	#define  USB_DEVICE_ATTR (USB_CONFIG_ATTR_BUS_POWERED)
-	#define  UDC_SUSPEND_EVENT()         user_callback_suspend_action()
-	extern void user_callback_suspend_action(void)
-	#define  UDC_RESUME_EVENT()          user_callback_resume_action()
-	extern void user_callback_resume_action(void)
+  #define  USB_DEVICE_ATTR (USB_CONFIG_ATTR_BUS_POWERED)
+  #define  UDC_SUSPEND_EVENT()         user_callback_suspend_action()
+  extern void user_callback_suspend_action(void)
+  #define  UDC_RESUME_EVENT()          user_callback_resume_action()
+  extern void user_callback_resume_action(void)
 \endcode
  *
  * Add to application C-file:
  * \code
-	void user_callback_suspend_action(void)
-	{
-	   // Disable hardware component to reduce power consumption
-	}
-	void user_callback_resume_action(void)
-	{
-	   // Re-enable hardware component
-	}
+  void user_callback_suspend_action(void)
+  {
+     // Disable hardware component to reduce power consumption
+  }
+  void user_callback_resume_action(void)
+  {
+     // Re-enable hardware component
+  }
 \endcode
  *
  * \subsection udc_use_case_5_usage_flow Workflow
  * -# Ensure that conf_usb.h is available and contains the following parameters:
  *   - \code // Authorizes the BUS power feature
-	#define  USB_DEVICE_ATTR (USB_CONFIG_ATTR_BUS_POWERED) \endcode
+  #define  USB_DEVICE_ATTR (USB_CONFIG_ATTR_BUS_POWERED) \endcode
  *   - \code // Define callback called when the host suspend the USB line
-	#define UDC_SUSPEND_EVENT() user_callback_suspend_action()
-	extern void user_callback_suspend_action(void); \endcode
+  #define UDC_SUSPEND_EVENT() user_callback_suspend_action()
+  extern void user_callback_suspend_action(void); \endcode
  *   - \code // Define callback called when the host or device resume the USB line
-	#define UDC_RESUME_EVENT() user_callback_resume_action()
-	extern void user_callback_resume_action(void); \endcode
+  #define UDC_RESUME_EVENT() user_callback_resume_action()
+  extern void user_callback_resume_action(void); \endcode
  * -# Reduce power consumption in suspend mode (max. 2.5mA on Vbus):
  *   - \code void user_callback_suspend_action(void)
-	{
-	turn_off_components();
-	} \endcode
+  {
+  turn_off_components();
+  } \endcode
  */
 
 /**
@@ -654,44 +647,42 @@ usb_iface_desc_t UDC_DESC_STORAGE *udc_get_interface_desc(void);
  * \subsection udc_use_case_6_usage_code Example code
  * Content of conf_usb.h:
  * \code
-	#define  USB_DEVICE_SERIAL_NAME
-	#define  USB_DEVICE_GET_SERIAL_NAME_POINTER serial_number
-	#define  USB_DEVICE_GET_SERIAL_NAME_LENGTH  12
-	extern uint8_t serial_number[];
+  #define  USB_DEVICE_SERIAL_NAME
+  #define  USB_DEVICE_GET_SERIAL_NAME_POINTER serial_number
+  #define  USB_DEVICE_GET_SERIAL_NAME_LENGTH  12
+  extern uint8_t serial_number[];
 \endcode
  *
  * Add to application C-file:
  * \code
-	 uint8_t serial_number[USB_DEVICE_GET_SERIAL_NAME_LENGTH];
+   uint8_t serial_number[USB_DEVICE_GET_SERIAL_NAME_LENGTH];
 
-	 void init_build_usb_serial_number(void)
-	 {
-	 serial_number[0] = 'A';
-	 serial_number[1] = 'B';
-	 ...
-	 serial_number[USB_DEVICE_GET_SERIAL_NAME_LENGTH-1] = 'C';
-	 } \endcode
+   void init_build_usb_serial_number(void)
+   {
+   serial_number[0] = 'A';
+   serial_number[1] = 'B';
+   ...
+   serial_number[USB_DEVICE_GET_SERIAL_NAME_LENGTH-1] = 'C';
+   } \endcode
  *
  * \subsection udc_use_case_6_usage_flow Workflow
  * -# Ensure that conf_usb.h is available and contains the following parameters
  * required to enable a USB serial number strings dynamically:
  *   - \code #define  USB_DEVICE_SERIAL_NAME // Define this empty
-	#define  USB_DEVICE_GET_SERIAL_NAME_POINTER serial_number // Give serial array pointer
-	#define  USB_DEVICE_GET_SERIAL_NAME_LENGTH  12 // Give size of serial array
-	extern uint8_t serial_number[]; // Declare external serial array \endcode
+  #define  USB_DEVICE_GET_SERIAL_NAME_POINTER serial_number // Give serial array pointer
+  #define  USB_DEVICE_GET_SERIAL_NAME_LENGTH  12 // Give size of serial array
+  extern uint8_t serial_number[]; // Declare external serial array \endcode
  * -# Before start USB stack, initialize the serial array
  *   - \code
-	 uint8_t serial_number[USB_DEVICE_GET_SERIAL_NAME_LENGTH];
+   uint8_t serial_number[USB_DEVICE_GET_SERIAL_NAME_LENGTH];
 
-	 void init_build_usb_serial_number(void)
-	 {
-	 serial_number[0] = 'A';
-	 serial_number[1] = 'B';
-	 ...
-	 serial_number[USB_DEVICE_GET_SERIAL_NAME_LENGTH-1] = 'C';
-	 } \endcode
+   void init_build_usb_serial_number(void)
+   {
+   serial_number[0] = 'A';
+   serial_number[1] = 'B';
+   ...
+   serial_number[USB_DEVICE_GET_SERIAL_NAME_LENGTH-1] = 'C';
+   } \endcode
  */
 
-
-
 #endif // _UDC_H_

Marlin/src/HAL/DUE/usb/udc_desc.h

@@ -78,50 +78,47 @@ extern "C" {
  * For Mega application used "code".
  */
 #define  UDC_DESC_STORAGE
-	// Descriptor storage in internal RAM
+  // Descriptor storage in internal RAM
 #if (defined UDC_DATA_USE_HRAM_SUPPORT)
-#	if defined(__GNUC__)
-#		define UDC_DATA(x)              COMPILER_WORD_ALIGNED __attribute__((__section__(".data_hram0")))
-#		define UDC_BSS(x)               COMPILER_ALIGNED(x)   __attribute__((__section__(".bss_hram0")))
-#	elif defined(__ICCAVR32__)
-#		define UDC_DATA(x)              COMPILER_ALIGNED(x)   __data32
-#		define UDC_BSS(x)               COMPILER_ALIGNED(x)   __data32
-#	endif
-#else
-#	define UDC_DATA(x)              COMPILER_ALIGNED(x)
-#	define UDC_BSS(x)               COMPILER_ALIGNED(x)
+  #if defined(__GNUC__)
+  #define UDC_DATA(x)   COMPILER_WORD_ALIGNED __attribute__((__section__(".data_hram0")))
+  #define UDC_BSS(x)    COMPILER_ALIGNED(x)   __attribute__((__section__(".bss_hram0")))
+#elif defined(__ICCAVR32__)
+  #define UDC_DATA(x)   COMPILER_ALIGNED(x)   __data32
+  #define UDC_BSS(x)    COMPILER_ALIGNED(x)   __data32
+#endif
+#else
+  #define UDC_DATA(x)   COMPILER_ALIGNED(x)
+  #define UDC_BSS(x)    COMPILER_ALIGNED(x)
 #endif
-
-
 
 /**
  * \brief Configuration descriptor and UDI link for one USB speed
  */
 typedef struct {
-	//! USB configuration descriptor
-	usb_conf_desc_t UDC_DESC_STORAGE *desc;
-	//! Array of UDI API pointer
-	udi_api_t UDC_DESC_STORAGE *UDC_DESC_STORAGE * udi_apis;
+  //! USB configuration descriptor
+  usb_conf_desc_t UDC_DESC_STORAGE *desc;
+  //! Array of UDI API pointer
+  udi_api_t UDC_DESC_STORAGE *UDC_DESC_STORAGE * udi_apis;
 } udc_config_speed_t;
 
-
 /**
  * \brief All information about the USB Device
  */
 typedef struct {
-	//! USB device descriptor for low or full speed
-	usb_dev_desc_t UDC_DESC_STORAGE *confdev_lsfs;
-	//! USB configuration descriptor and UDI API pointers for low or full speed
-	udc_config_speed_t UDC_DESC_STORAGE *conf_lsfs;
-#ifdef USB_DEVICE_HS_SUPPORT
-	//! USB device descriptor for high speed
-	usb_dev_desc_t UDC_DESC_STORAGE *confdev_hs;
-	//! USB device qualifier, only use in high speed mode
-	usb_dev_qual_desc_t UDC_DESC_STORAGE *qualifier;
-	//! USB configuration descriptor and UDI API pointers for high speed
-	udc_config_speed_t UDC_DESC_STORAGE *conf_hs;
-#endif
-	usb_dev_bos_desc_t UDC_DESC_STORAGE *conf_bos;
+  //! USB device descriptor for low or full speed
+  usb_dev_desc_t UDC_DESC_STORAGE *confdev_lsfs;
+  //! USB configuration descriptor and UDI API pointers for low or full speed
+  udc_config_speed_t UDC_DESC_STORAGE *conf_lsfs;
+  #ifdef USB_DEVICE_HS_SUPPORT
+    //! USB device descriptor for high speed
+    usb_dev_desc_t UDC_DESC_STORAGE *confdev_hs;
+    //! USB device qualifier, only use in high speed mode
+    usb_dev_qual_desc_t UDC_DESC_STORAGE *qualifier;
+    //! USB configuration descriptor and UDI API pointers for high speed
+    udc_config_speed_t UDC_DESC_STORAGE *conf_hs;
+  #endif
+  usb_dev_bos_desc_t UDC_DESC_STORAGE *conf_bos;
 } udc_config_t;
 
 //! Global variables of USB Device Descriptor and UDI links

Marlin/src/HAL/DUE/usb/udd.h

@@ -71,8 +71,8 @@ typedef uint8_t udd_ep_id_t;
 //! \brief Endpoint transfer status
 //! Returned in parameters of callback register via udd_ep_run routine.
 typedef enum {
-	UDD_EP_TRANSFER_OK = 0,
-	UDD_EP_TRANSFER_ABORT = 1,
+  UDD_EP_TRANSFER_OK = 0,
+  UDD_EP_TRANSFER_ABORT = 1,
 } udd_ep_status_t;
 
 /**
@@ -82,41 +82,37 @@ typedef enum {
  * It can be updated by udc_process_setup() from UDC or *setup() from UDIs.
  */
 typedef struct {
-	//! Data received in USB SETUP packet
-	//! Note: The swap of "req.wValues" from uin16_t to le16_t is done by UDD.
-	usb_setup_req_t req;
+  //! Data received in USB SETUP packet
+  //! Note: The swap of "req.wValues" from uin16_t to le16_t is done by UDD.
+  usb_setup_req_t req;
 
-	//! Point to buffer to send or fill with data following SETUP packet
-	//! This buffer must be word align for DATA IN phase (use prefix COMPILER_WORD_ALIGNED for buffer)
-	uint8_t *payload;
+  //! Point to buffer to send or fill with data following SETUP packet
+  //! This buffer must be word align for DATA IN phase (use prefix COMPILER_WORD_ALIGNED for buffer)
+  uint8_t *payload;
 
-	//! Size of buffer to send or fill, and content the number of byte transferred
-	uint16_t payload_size;
+  //! Size of buffer to send or fill, and content the number of byte transferred
+  uint16_t payload_size;
 
-	//! Callback called after reception of ZLP from setup request
-	void (*callback)(void);
+  //! Callback called after reception of ZLP from setup request
+  void (*callback)(void);
 
-	//! Callback called when the buffer given (.payload) is full or empty.
-	//! This one return false to abort data transfer, or true with a new buffer in .payload.
-	bool (*over_under_run)(void);
+  //! Callback called when the buffer given (.payload) is full or empty.
+  //! This one return false to abort data transfer, or true with a new buffer in .payload.
+  bool (*over_under_run)(void);
 } udd_ctrl_request_t;
 extern udd_ctrl_request_t udd_g_ctrlreq;
 
 //! Return true if the setup request \a udd_g_ctrlreq indicates IN data transfer
-#define  Udd_setup_is_in()       \
-      (USB_REQ_DIR_IN == (udd_g_ctrlreq.req.bmRequestType & USB_REQ_DIR_MASK))
+#define  Udd_setup_is_in()     (USB_REQ_DIR_IN == (udd_g_ctrlreq.req.bmRequestType & USB_REQ_DIR_MASK))
 
 //! Return true if the setup request \a udd_g_ctrlreq indicates OUT data transfer
-#define  Udd_setup_is_out()      \
-      (USB_REQ_DIR_OUT == (udd_g_ctrlreq.req.bmRequestType & USB_REQ_DIR_MASK))
+#define  Udd_setup_is_out()    (USB_REQ_DIR_OUT == (udd_g_ctrlreq.req.bmRequestType & USB_REQ_DIR_MASK))
 
 //! Return the type of the SETUP request \a udd_g_ctrlreq. \see usb_reqtype.
-#define  Udd_setup_type()        \
-      (udd_g_ctrlreq.req.bmRequestType & USB_REQ_TYPE_MASK)
+#define  Udd_setup_type()      (udd_g_ctrlreq.req.bmRequestType & USB_REQ_TYPE_MASK)
 
 //! Return the recipient of the SETUP request \a udd_g_ctrlreq. \see usb_recipient
-#define  Udd_setup_recipient()   \
-      (udd_g_ctrlreq.req.bmRequestType & USB_REQ_RECIP_MASK)
+#define  Udd_setup_recipient() (udd_g_ctrlreq.req.bmRequestType & USB_REQ_RECIP_MASK)
 
 /**
  * \brief End of halt callback function type.
@@ -134,8 +130,7 @@ typedef void (*udd_callback_halt_cleared_t)(void);
  * \param status     UDD_EP_TRANSFER_ABORT, if transfer is aborted
  * \param n          number of data transferred
  */
-typedef void (*udd_callback_trans_t) (udd_ep_status_t status,
-		iram_size_t nb_transferred, udd_ep_id_t ep);
+typedef void (*udd_callback_trans_t) (udd_ep_status_t status, iram_size_t nb_transferred, udd_ep_id_t ep);
 
 /**
  * \brief Authorizes the VBUS event
@@ -218,7 +213,6 @@ void udd_send_remotewakeup(void);
  */
 void udd_set_setup_payload( uint8_t *payload, uint16_t payload_size );
 
-
 /**
  * \name Endpoint Management
  *
@@ -239,8 +233,7 @@ void udd_set_setup_payload( uint8_t *payload, uint16_t payload_size );
  *
  * \return \c 1 if the endpoint is enabled, otherwise \c 0.
  */
-bool udd_ep_alloc(udd_ep_id_t ep, uint8_t bmAttributes,
-		uint16_t MaxEndpointSize);
+bool udd_ep_alloc(udd_ep_id_t ep, uint8_t bmAttributes, uint16_t MaxEndpointSize);
 
 /**
  * \brief Disables an endpoint
@@ -294,8 +287,7 @@ bool udd_ep_clear_halt(udd_ep_id_t ep);
  *
  * \return \c 1 if the register is accepted, otherwise \c 0.
  */
-bool udd_ep_wait_stall_clear(udd_ep_id_t ep,
-		udd_callback_halt_cleared_t callback);
+bool udd_ep_wait_stall_clear(udd_ep_id_t ep, udd_callback_halt_cleared_t callback);
 
 /**
  * \brief Allows to receive or send data on an endpoint
@@ -321,9 +313,8 @@ bool udd_ep_wait_stall_clear(udd_ep_id_t ep,
  *
  * \return \c 1 if function was successfully done, otherwise \c 0.
  */
-bool udd_ep_run(udd_ep_id_t ep, bool b_shortpacket,
-		uint8_t * buf, iram_size_t buf_size,
-		udd_callback_trans_t callback);
+bool udd_ep_run(udd_ep_id_t ep, bool b_shortpacket, uint8_t * buf, iram_size_t buf_size, udd_callback_trans_t callback);
+
 /**
  * \brief Aborts transfer on going on endpoint
  *
@@ -339,7 +330,6 @@ void udd_ep_abort(udd_ep_id_t ep);
 
 //@}
 
-
 /**
  * \name High speed test mode management
  *
@@ -352,7 +342,6 @@ void udd_test_mode_se0_nak(void);
 void udd_test_mode_packet(void);
 //@}
 
-
 /**
  * \name UDC callbacks to provide for UDD
  *

Marlin/src/HAL/DUE/usb/udi.h

@@ -72,57 +72,57 @@ extern "C" {
  * selected by UDC.
  */
 typedef struct {
-	/**
-	 * \brief Enable the interface.
-	 *
-	 * This function is called when the host selects a configuration
-	 * to which this interface belongs through a Set Configuration
-	 * request, and when the host selects an alternate setting of
-	 * this interface through a Set Interface request.
-	 *
-	 * \return \c 1 if function was successfully done, otherwise \c 0.
-	 */
-	bool (*enable)(void);
+  /**
+   * \brief Enable the interface.
+   *
+   * This function is called when the host selects a configuration
+   * to which this interface belongs through a Set Configuration
+   * request, and when the host selects an alternate setting of
+   * this interface through a Set Interface request.
+   *
+   * \return \c 1 if function was successfully done, otherwise \c 0.
+   */
+  bool (*enable)(void);
 
-	/**
-	 * \brief Disable the interface.
-	 *
-	 * This function is called when this interface is currently
-	 * active, and
-	 * - the host selects any configuration through a Set
-	 *   Configuration request, or
-	 * - the host issues a USB reset, or
-	 * - the device is detached from the host (i.e. Vbus is no
-	 *   longer present)
-	 */
-	void (*disable)(void);
+  /**
+   * \brief Disable the interface.
+   *
+   * This function is called when this interface is currently
+   * active, and
+   * - the host selects any configuration through a Set
+   *   Configuration request, or
+   * - the host issues a USB reset, or
+   * - the device is detached from the host (i.e. Vbus is no
+   *   longer present)
+   */
+  void (*disable)(void);
 
-	/**
-	 * \brief Handle a control request directed at an interface.
-	 *
-	 * This function is called when this interface is currently
-	 * active and the host sends a SETUP request
-	 * with this interface as the recipient.
-	 *
-	 * Use udd_g_ctrlreq to decode and response to SETUP request.
-	 *
-	 * \return \c 1 if this interface supports the SETUP request, otherwise \c 0.
-	 */
-	bool (*setup)(void);
+  /**
+   * \brief Handle a control request directed at an interface.
+   *
+   * This function is called when this interface is currently
+   * active and the host sends a SETUP request
+   * with this interface as the recipient.
+   *
+   * Use udd_g_ctrlreq to decode and response to SETUP request.
+   *
+   * \return \c 1 if this interface supports the SETUP request, otherwise \c 0.
+   */
+  bool (*setup)(void);
 
-	/**
-	 * \brief Returns the current setting of the selected interface.
-	 *
-	 * This function is called when UDC when know alternate setting of selected interface.
-	 *
-	 * \return alternate setting of selected interface
-	 */
-	uint8_t (*getsetting)(void);
+  /**
+   * \brief Returns the current setting of the selected interface.
+   *
+   * This function is called when UDC when know alternate setting of selected interface.
+   *
+   * \return alternate setting of selected interface
+   */
+  uint8_t (*getsetting)(void);
 
-	/**
-	 * \brief To signal that a SOF is occurred
-	 */
-	void (*sof_notify)(void);
+  /**
+   * \brief To signal that a SOF is occurred
+   */
+  void (*sof_notify)(void);
 } udi_api_t;
 
 //@}

Marlin/src/HAL/DUE/usb/udi_cdc.c

@@ -457,7 +457,6 @@ void udi_cdc_data_sof_notify(void)
 #endif
 }
 
-
 // ------------------------
 //------- Internal routines to control serial line
 
@@ -520,7 +519,6 @@ static void udi_cdc_ctrl_state_change(uint8_t port, bool b_set, le16_t bit_mask)
 	udi_cdc_ctrl_state_notify(port, ep_comm);
 }
 
-
 static void udi_cdc_ctrl_state_notify(uint8_t port, udd_ep_id_t ep)
 {
 #if UDI_CDC_PORT_NB == 1 // To optimize code
@@ -542,7 +540,6 @@ static void udi_cdc_ctrl_state_notify(uint8_t port, udd_ep_id_t ep)
 	}
 }
 
-
 static void udi_cdc_serial_state_msg_sent(udd_ep_status_t status, iram_size_t n, udd_ep_id_t ep)
 {
 	uint8_t port;
@@ -578,11 +575,9 @@ static void udi_cdc_serial_state_msg_sent(udd_ep_status_t status, iram_size_t n,
 	udi_cdc_ctrl_state_notify(port, ep);
 }
 
-
 // ------------------------
 //------- Internal routines to process data transfer
 
-
 static bool udi_cdc_rx_start(uint8_t port)
 {
 	irqflags_t flags;
@@ -632,7 +627,6 @@ static bool udi_cdc_rx_start(uint8_t port)
 			udi_cdc_data_received);
 }
 
-
 static void udi_cdc_data_received(udd_ep_status_t status, iram_size_t n, udd_ep_id_t ep)
 {
 	uint8_t buf_sel_trans;
@@ -668,7 +662,6 @@ static void udi_cdc_data_received(udd_ep_status_t status, iram_size_t n, udd_ep_
 	udi_cdc_rx_start(port);
 }
 
-
 static void udi_cdc_data_sent(udd_ep_status_t status, iram_size_t n, udd_ep_id_t ep)
 {
 	uint8_t port;
@@ -700,7 +693,6 @@ static void udi_cdc_data_sent(udd_ep_status_t status, iram_size_t n, udd_ep_id_t
 	udi_cdc_tx_send(port);
 }
 
-
 static void udi_cdc_tx_send(uint8_t port)
 {
 	irqflags_t flags;
@@ -780,11 +772,9 @@ static void udi_cdc_tx_send(uint8_t port)
 			udi_cdc_data_sent);
 }
 
-
 // ------------------------
 //------- Application interface
 
-
 //------- Application interface
 
 void udi_cdc_ctrl_signal_dcd(bool b_set)