🔖 Marlin 2.0.5.5

Co-Authored-By: thisiskeithb <13375512+thisiskeithb@users.noreply.github.com>

.github/workflows/bad-target.md

@@ -1,7 +0,0 @@
-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/bump-date.yml

@@ -11,6 +11,8 @@ on:
 
 jobs:
   bump_date:
+    name: Bump Distribution Date
+    if: github.repository == 'MarlinFirmware/Marlin'
 
     runs-on: ubuntu-latest
 
@@ -24,7 +26,6 @@ jobs:
     - name: Bump Distribution Date
       run: |
         # Inline Bump Script
-        [[ "$GITHUB_REPOSITORY" == "MarlinFirmware/Marlin" ]] || exit 0
         DIST=$( date +"%Y-%m-%d" )
         eval "sed -E -i 's/(#define +STRING_DISTRIBUTION_DATE) .*$/\1 \"$DIST\"/g' Marlin/src/inc/Version.h" && \
         git config user.name "${GITHUB_ACTOR}" && \

.github/workflows/check-pr.yml

@@ -1,6 +1,6 @@
 #
-# comment-pr.yml
-# Add a comment to any PR directed to a release branch
+# check-pr.yml
+# Close PRs directed at release branches
 #
 
 name: PR Bad Target
@@ -14,14 +14,20 @@ on:
 
 jobs:
   bad_target:
-
     name: PR Bad Target
+    if: github.repository == 'MarlinFirmware/Marlin'
+
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v1
-      - uses: harupy/comment-on-pr@master
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        with:
-          filename: bad-target.md
+    - uses: peter-evans/close-pull@v1
+      with:
+        delete-branch: false
+        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/close-stale.yml

@@ -0,0 +1,27 @@
+#
+# 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 is stale because it has been open 30 days with no activity. Remove stale label / comment or this will be closed in 5 days.'
+        days-before-stale: 30
+        days-before-close: 5
+        stale-issue-label: 'stale-closing-soon'
+        exempt-issue-labels: 'T: Feature Request'

.github/workflows/lock-closed.yml

@@ -0,0 +1,32 @@
+#
+# 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: ''
+        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

@@ -9,7 +9,14 @@ on:
   pull_request:
     branches:
     - bugfix-2.0.x
-    - dev-2.1.x
+    paths-ignore:
+    - config/**
+    - data/**
+    - docs/**
+    - '**/*.md'
+  push:
+    branches:
+    - bugfix-2.0.x
     paths-ignore:
     - config/**
     - data/**
@@ -18,6 +25,8 @@ on:
 
 jobs:
   test_builds:
+    name: Run All Tests
+    if: github.repository == 'MarlinFirmware/Marlin'
 
     runs-on: ubuntu-latest
 
@@ -29,7 +38,7 @@ jobs:
         - DUE
         - esp32
         - linux_native
-        - megaatmega2560
+        - mega2560
         - teensy31
         - teensy35
         - SAMD51_grandcentral_m4
@@ -37,22 +46,23 @@ jobs:
         # Extended AVR Environments
 
         - FYSETC_F6_13
-        - megaatmega1280
+        - mega1280
         - rambo
-        - sanguino_atmega1284p
-        - sanguino_atmega644p
+        - sanguino1284p
+        - sanguino644p
 
         # Extended STM32 Environments
 
-        - STM32F103RC_bigtree
-        - STM32F103RC_bigtree_USB
-        - STM32F103RE_bigtree
-        - STM32F103RE_bigtree_USB
+        - STM32F103RC_btt
+        - STM32F103RC_btt_USB
+        - STM32F103RE_btt
+        - STM32F103RE_btt_USB
         - STM32F103RC_fysetc
         - jgaurora_a5s_a1
         - STM32F103VE_longer
         - STM32F407VE_black
         - BIGTREE_SKR_PRO
+        - BIGTREE_GTR_V1_0
         - mks_robin
         - ARMED
         - FYSETC_S6

.github/workflows/unlock-reopened.yml

@@ -0,0 +1,22 @@
+#
+# 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 }}"

Marlin/Configuration.h

@@ -36,7 +36,7 @@
  * Advanced settings can be found in Configuration_adv.h
  *
  */
-#define CONFIGURATION_H_VERSION 020004
+#define CONFIGURATION_H_VERSION 020005
 
 //===========================================================================
 //============================= Getting Started =============================
@@ -99,6 +99,7 @@
 /**
  * Select the serial port on the board to use for communication with the host.
  * This allows the connection of wireless adapters (for instance) to non-default port pins.
+ * Serial port -1 is the USB emulated serial port, if available.
  * Note: The first serial port (-1 or 0) will always be used by the Arduino bootloader.
  *
  * :[-1, 0, 1, 2, 3, 4, 5, 6, 7]
@@ -107,9 +108,6 @@
 
 /**
  * Select a secondary serial port on the board to use for communication with the host.
- * This allows the connection of wireless adapters (for instance) to non-default port pins.
- * Serial port -1 is the USB emulated serial port, if available.
- *
  * :[-1, 0, 1, 2, 3, 4, 5, 6, 7]
  */
 //#define SERIAL_PORT_2 -1
@@ -363,6 +361,7 @@
  *   331 : (3.3V scaled thermistor 1 table for MEGA)
  *   332 : (3.3V scaled thermistor 1 table for DUE)
  *     2 : 200k thermistor - ATC Semitec 204GT-2 (4.7k pullup)
+ *   202 : 200k thermistor - Copymaster 3D
  *     3 : Mendel-parts thermistor (4.7k pullup)
  *     4 : 10k thermistor !! do not use it for a hotend. It gives bad resolution at high temp. !!
  *     5 : 100K thermistor - ATC Semitec 104GT-2/104NT-4-R025H42G (Used in ParCan & J-Head) (4.7k pullup)
@@ -474,7 +473,7 @@
 #if ENABLED(PIDTEMP)
   //#define PID_EDIT_MENU         // Add PID editing to the "Advanced Settings" menu. (~700 bytes of PROGMEM)
   //#define PID_AUTOTUNE_MENU     // Add PID auto-tuning to the "Advanced Settings" menu. (~250 bytes of PROGMEM)
-  //#define PID_DEBUG             // Sends debug data to the serial port.
+  //#define PID_DEBUG             // Sends debug data to the serial port. Use 'M303 D' to toggle activation.
   //#define PID_OPENLOOP 1        // Puts PID in open loop. M104/M140 sets the output power from 0 to PID_MAX
   //#define SLOW_PWM_HEATERS      // PWM with very low frequency (roughly 0.125Hz=8s) and minimum state time of approximately 1s useful for heaters driven by a relay
   //#define PID_PARAMS_PER_HOTEND // Uses separate PID parameters for each extruder (useful for mismatched extruders)
@@ -784,6 +783,8 @@
   #define DEFAULT_YJERK 10.0
   #define DEFAULT_ZJERK  0.3
 
+  //#define TRAVEL_EXTRA_XYJERK 0.0     // Additional jerk allowance for all travel moves
+
   //#define LIMITED_JERK_EDITING        // Limit edit via M205 or LCD to DEFAULT_aJERK * 2
   #if ENABLED(LIMITED_JERK_EDITING)
     #define MAX_JERK_EDIT_VALUES { 20, 20, 0.6, 10 } // ...or, set your own edit limits
@@ -923,6 +924,14 @@
   #define SMART_EFFECTOR_MOD_PIN  -1  // Connect a GPIO pin to the Smart Effector MOD pin
 #endif
 
+/**
+ * Use StallGuard2 to probe the bed with the nozzle.
+ * Requires stallGuard-capable Trinamic stepper drivers.
+ * CAUTION: This can damage machines with Z lead screws.
+ *          Take extreme care when setting up this feature.
+ */
+//#define SENSORLESS_PROBING
+
 //
 // For Z_PROBE_ALLEN_KEY see the Delta example configurations.
 //
@@ -1436,6 +1445,7 @@
 //#define EEPROM_SETTINGS     // Persistent storage with M500 and M501
 //#define DISABLE_M503        // Saves ~2700 bytes of PROGMEM. Disable for release!
 #define EEPROM_CHITCHAT       // Give feedback on EEPROM commands. Disable to save PROGMEM.
+#define EEPROM_BOOT_SILENT    // Keep M503 quiet and only give errors during first load
 #if ENABLED(EEPROM_SETTINGS)
   //#define EEPROM_AUTO_INIT  // Init EEPROM automatically on any errors.
 #endif

Marlin/Configuration_adv.h

@@ -31,7 +31,7 @@
  * Basic settings can be found in Configuration.h
  *
  */
-#define CONFIGURATION_ADV_H_VERSION 020004
+#define CONFIGURATION_ADV_H_VERSION 020005
 
 // @section temperature
 
@@ -276,8 +276,10 @@
   #define AUTOTEMP_OLDWEIGHT 0.98
 #endif
 
-// Show extra position information with 'M114 D'
-//#define M114_DETAIL
+// Extra options for the M114 "Current Position" report
+//#define M114_DETAIL         // Use 'M114` for details to check planner calculations
+//#define M114_REALTIME       // Real current position based on forward kinematics
+//#define M114_LEGACY         // M114 used to synchronize on every call. Enable if needed.
 
 // Show Temperature ADC value
 // Enable for M105 to include ADC values read from temperature sensors.
@@ -336,15 +338,22 @@
  * Controller Fan
  * To cool down the stepper drivers and MOSFETs.
  *
- * The fan will turn on automatically whenever any stepper is enabled
- * and turn off after a set period after all steppers are turned off.
+ * The fan turns on automatically whenever any driver is enabled and turns
+ * off (or reduces to idle speed) shortly after drivers are turned off.
+ *
  */
 //#define USE_CONTROLLER_FAN
 #if ENABLED(USE_CONTROLLER_FAN)
-  //#define CONTROLLER_FAN_PIN -1           // Set a custom pin for the controller fan
-  #define CONTROLLERFAN_SECS 60             // Duration in seconds for the fan to run after all motors are disabled
-  #define CONTROLLERFAN_SPEED 255           // 255 == full speed
-  //#define CONTROLLERFAN_SPEED_Z_ONLY 127  // Reduce noise on machines that keep Z enabled
+  //#define CONTROLLER_FAN_PIN -1        // Set a custom pin for the controller fan
+  //#define CONTROLLER_FAN_USE_Z_ONLY    // With this option only the Z axis is considered
+  #define CONTROLLERFAN_SPEED_MIN      0 // (0-255) Minimum speed. (If set below this value the fan is turned off.)
+  #define CONTROLLERFAN_SPEED_ACTIVE 255 // (0-255) Active speed, used when any motor is enabled
+  #define CONTROLLERFAN_SPEED_IDLE     0 // (0-255) Idle speed, used when motors are disabled
+  #define CONTROLLERFAN_IDLE_TIME     60 // (seconds) Extra time to keep the fan running after disabling motors
+  //#define CONTROLLER_FAN_EDITABLE      // Enable M710 configurable settings
+  #if ENABLED(CONTROLLER_FAN_EDITABLE)
+    #define CONTROLLER_FAN_MENU          // Enable the Controller Fan submenu
+  #endif
 #endif
 
 // When first starting the main fan, run it at full speed for the
@@ -716,6 +725,9 @@
   #define Z_STEPPER_ALIGN_ITERATIONS 5    // Number of iterations to apply during alignment
   #define Z_STEPPER_ALIGN_ACC        0.02 // Stop iterating early if the accuracy is better than this
   #define RESTORE_LEVELING_AFTER_G34      // Restore leveling after G34 is done?
+  // After G34, re-home Z (G28 Z) or just calculate it from the last probe heights?
+  // Re-homing might be more precise in reproducing the actual 'G28 Z' homing height, especially on an uneven bed.
+  #define HOME_AFTER_G34
 #endif
 
 // @section motion
@@ -748,8 +760,12 @@
 // Minimum time that a segment needs to take if the buffer is emptied
 #define DEFAULT_MINSEGMENTTIME        20000   // (ms)
 
-// If defined the movements slow down when the look ahead buffer is only half full
+// Slow down the machine if the look ahead buffer is (by default) half full.
+// Increase the slowdown divisor for larger buffer sizes.
 #define SLOWDOWN
+#if ENABLED(SLOWDOWN)
+  #define SLOWDOWN_DIVISOR 2
+#endif
 
 // Frequency limit
 // See nophead's blog for more info
@@ -990,7 +1006,11 @@
 // Show the E position (filament used) during printing
 //#define LCD_SHOW_E_TOTAL
 
-#if HAS_GRAPHICAL_LCD && HAS_PRINT_PROGRESS
+#if ENABLED(SHOW_BOOTSCREEN)
+  #define BOOTSCREEN_TIMEOUT 4000        // (ms) Total Duration to display the boot screen(s)
+#endif
+
+#if HAS_GRAPHICAL_LCD && EITHER(SDSUPPORT, LCD_SET_PROGRESS_MANUALLY)
   //#define PRINT_PROGRESS_SHOW_DECIMALS // Show progress with decimal digits
   //#define SHOW_REMAINING_TIME          // Display estimated time to completion
   #if ENABLED(SHOW_REMAINING_TIME)
@@ -999,7 +1019,7 @@
   #endif
 #endif
 
-#if HAS_CHARACTER_LCD && HAS_PRINT_PROGRESS
+#if HAS_CHARACTER_LCD && EITHER(SDSUPPORT, LCD_SET_PROGRESS_MANUALLY)
   //#define LCD_PROGRESS_BAR              // Show a progress bar on HD44780 LCDs for SD printing
   #if ENABLED(LCD_PROGRESS_BAR)
     #define PROGRESS_BAR_BAR_TIME 2000    // (ms) Amount of time to show the bar
@@ -1012,12 +1032,9 @@
 
 #if ENABLED(SDSUPPORT)
 
-  // Some RAMPS and other boards don't detect when an SD card is inserted. You can work
-  // around this by connecting a push button or single throw switch to the pin defined
-  // as SD_DETECT_PIN in your board's pins definitions.
-  // This setting should be disabled unless you are using a push button, pulling the pin to ground.
-  // Note: This is always disabled for ULTIPANEL (except ELB_FULL_GRAPHIC_CONTROLLER).
-  #define SD_DETECT_INVERTED
+  // The standard SD detect circuit reads LOW when media is inserted and HIGH when empty.
+  // Enable this option and set to HIGH if your SD cards are incorrectly detected.
+  //#define SD_DETECT_STATE HIGH
 
   #define SD_FINISHED_STEPPERRELEASE true          // Disable steppers when SD Print is finished
   #define SD_FINISHED_RELEASECOMMAND "M84 X Y Z E" // You might want to keep the Z enabled so your bed stays in place.
@@ -1032,6 +1049,10 @@
 
   #define EVENT_GCODE_SD_STOP "G28XY"       // G-code to run on Stop Print (e.g., "G28XY" or "G27")
 
+  #if ENABLED(PRINTER_EVENT_LEDS)
+    #define PE_LEDS_COMPLETED_TIME  (30*60) // (seconds) Time to keep the LED "done" color before restoring normal illumination
+  #endif
+
   /**
    * Continue after Power-Loss (Creality3D)
    *
@@ -1039,12 +1060,16 @@
    * during SD printing. If the recovery file is found at boot time, present
    * an option on the LCD screen to continue the print from the last-known
    * point in the file.
+   *
+   * If the machine reboots when resuming a print you may need to replace or
+   * reformat the SD card. (Bad sectors delay startup triggering the watchdog.)
    */
   //#define POWER_LOSS_RECOVERY
   #if ENABLED(POWER_LOSS_RECOVERY)
+    #define PLR_ENABLED_DEFAULT   false // Power Loss Recovery enabled by default. (Set with 'M413 Sn' & M500)
     //#define BACKUP_POWER_SUPPLY       // Backup power / UPS to move the steppers on power loss
     //#define POWER_LOSS_ZRAISE       2 // (mm) Z axis raise on resume (on power loss with UPS)
-    //#define POWER_LOSS_PIN         44 // Pin to detect power loss
+    //#define POWER_LOSS_PIN         44 // Pin to detect power loss. Set to -1 to disable default pin on boards without module.
     //#define POWER_LOSS_STATE     HIGH // State of pin indicating power loss
     //#define POWER_LOSS_PULL           // Set pullup / pulldown as appropriate
     //#define POWER_LOSS_PURGE_LEN   20 // (mm) Length of filament to purge on resume
@@ -1172,18 +1197,16 @@
   // Add an optimized binary file transfer mode, initiated with 'M28 B1'
   //#define BINARY_FILE_TRANSFER
 
-  #if HAS_SDCARD_CONNECTION
-    /**
-     * Set this option to one of the following (or the board's defaults apply):
-     *
-     *           LCD - Use the SD drive in the external LCD controller.
-     *       ONBOARD - Use the SD drive on the control board. (No SD_DETECT_PIN. M21 to init.)
-     *  CUSTOM_CABLE - Use a custom cable to access the SD (as defined in a pins file).
-     *
-     * :[ 'LCD', 'ONBOARD', 'CUSTOM_CABLE' ]
-     */
-    //#define SDCARD_CONNECTION LCD
-  #endif
+  /**
+   * Set this option to one of the following (or the board's defaults apply):
+   *
+   *           LCD - Use the SD drive in the external LCD controller.
+   *       ONBOARD - Use the SD drive on the control board. (No SD_DETECT_PIN. M21 to init.)
+   *  CUSTOM_CABLE - Use a custom cable to access the SD (as defined in a pins file).
+   *
+   * :[ 'LCD', 'ONBOARD', 'CUSTOM_CABLE' ]
+   */
+  //#define SDCARD_CONNECTION LCD
 
 #endif // SDSUPPORT
 
@@ -1223,10 +1246,6 @@
   // Western only. Not available for Cyrillic, Kana, Turkish, Greek, or Chinese.
   //#define USE_SMALL_INFOFONT
 
-  // Enable this option and reduce the value to optimize screen updates.
-  // The normal delay is 10µs. Use the lowest value that still gives a reliable display.
-  //#define DOGM_SPI_DELAY_US 5
-
   // Swap the CW/CCW indicators in the graphics overlay
   //#define OVERLAY_GFX_REVERSE
 
@@ -1243,6 +1262,10 @@
    * This will prevent position updates from being displayed.
    */
   #if ENABLED(U8GLIB_ST7920)
+    // Enable this option and reduce the value to optimize screen updates.
+    // The normal delay is 10µs. Use the lowest value that still gives a reliable display.
+    //#define DOGM_SPI_DELAY_US 5
+
     //#define LIGHTWEIGHT_UI
     #if ENABLED(LIGHTWEIGHT_UI)
       #define STATUS_EXPIRE_SECONDS 20
@@ -1260,6 +1283,7 @@
   #define STATUS_HOTEND_ANIM          // Use a second bitmap to indicate hotend heating
   #define STATUS_BED_ANIM             // Use a second bitmap to indicate bed heating
   #define STATUS_CHAMBER_ANIM         // Use a second bitmap to indicate chamber heating
+  //#define STATUS_CUTTER_ANIM        // Use a second bitmap to indicate spindle / laser active
   //#define STATUS_ALT_BED_BITMAP     // Use the alternative bed bitmap
   //#define STATUS_ALT_FAN_BITMAP     // Use the alternative fan bitmap
   //#define STATUS_FAN_FRAMES 3       // :[0,1,2,3,4] Number of fan animation frames
@@ -1279,7 +1303,7 @@
 // Additional options for DGUS / DWIN displays
 //
 #if HAS_DGUS_LCD
-  #define DGUS_SERIAL_PORT 2
+  #define DGUS_SERIAL_PORT 3
   #define DGUS_BAUDRATE 115200
 
   #define DGUS_RX_BUFFER_SIZE 128
@@ -1287,16 +1311,15 @@
   //#define DGUS_SERIAL_STATS_RX_BUFFER_OVERRUNS  // Fix Rx overrun situation (Currently only for AVR)
 
   #define DGUS_UPDATE_INTERVAL_MS  500    // (ms) Interval between automatic screen updates
-  #define BOOTSCREEN_TIMEOUT      3000    // (ms) Duration to display the boot screen
 
   #if EITHER(DGUS_LCD_UI_FYSETC, DGUS_LCD_UI_HIPRECY)
     #define DGUS_PRINT_FILENAME           // Display the filename during printing
     #define DGUS_PREHEAT_UI               // Display a preheat screen during heatup
 
     #if ENABLED(DGUS_LCD_UI_FYSETC)
-      //#define DUGS_UI_MOVE_DIS_OPTION   // Disabled by default for UI_FYSETC
+      //#define DGUS_UI_MOVE_DIS_OPTION   // Disabled by default for UI_FYSETC
     #else
-      #define DUGS_UI_MOVE_DIS_OPTION     // Enabled by default for UI_HIPRECY
+      #define DGUS_UI_MOVE_DIS_OPTION     // Enabled by default for UI_HIPRECY
     #endif
 
     #define DGUS_FILAMENT_LOADUNLOAD
@@ -1579,7 +1602,7 @@
   #if ENABLED(PROBE_TEMP_COMPENSATION)
     // Max temperature that can be reached by heated bed.
     // This is required only for the calibration process.
-    #define PTC_MAX_BED_TEMP 110
+    #define PTC_MAX_BED_TEMP BED_MAXTEMP
 
     // Park position to wait for probe cooldown
     #define PTC_PARK_POS_X 0.0F
@@ -1896,7 +1919,7 @@
  * TMC26X Stepper Driver options
  *
  * The TMC26XStepper library is required for this stepper driver.
- * https://github.com/trinamic/TMC26XStepper
+ * https://github.com/MarlinFirmware/TMC26XStepper
  */
 #if HAS_DRIVER(TMC26X)
 
@@ -2016,7 +2039,7 @@
  * TMCStepper library is required to use TMC stepper drivers.
  * https://github.com/teemuatlut/TMCStepper
  */
-#if HAS_TRINAMIC
+#if HAS_TRINAMIC_CONFIG
 
   #define HOLD_MULTIPLIER    0.5  // Scales down the holding current from run current
   #define INTERPOLATE       true  // Interpolate X/Y/Z_MICROSTEPS to 256
@@ -2303,14 +2326,6 @@
    */
   //#define SENSORLESS_HOMING // StallGuard capable drivers only
 
-  /**
-   * Use StallGuard2 to probe the bed with the nozzle.
-   *
-   * CAUTION: This could cause damage to machines that use a lead screw or threaded rod
-   *          to move the Z axis. Take extreme care when attempting to enable this feature.
-   */
-  //#define SENSORLESS_PROBING // StallGuard capable drivers only
-
   #if EITHER(SENSORLESS_HOMING, SENSORLESS_PROBING)
     // TMC2209: 0...255. TMC2130: -64...63
     #define X_STALL_SENSITIVITY  8
@@ -2346,7 +2361,7 @@
    */
   #define TMC_ADV() {  }
 
-#endif // HAS_TRINAMIC
+#endif // HAS_TRINAMIC_CONFIG
 
 // @section L64XX
 
@@ -2791,6 +2806,8 @@
   //#define GCODE_QUOTED_STRINGS  // Support for quoted string parameters
 #endif
 
+//#define GCODE_CASE_INSENSITIVE  // Accept G-code sent to the firmware in lowercase
+
 /**
  * CNC G-code options
  * Support CNC-style G-code dialects used by laser cutters, drawing machine cams, etc.
@@ -2990,7 +3007,7 @@
   #define MAX7219_LOAD_PIN  44
 
   //#define MAX7219_GCODE          // Add the M7219 G-code to control the LED matrix
-  #define MAX7219_INIT_TEST    2   // Do a test pattern at initialization (Set to 2 for spiral)
+  #define MAX7219_INIT_TEST    2   // Test pattern at startup: 0=none, 1=sweep, 2=spiral
   #define MAX7219_NUMBER_UNITS 1   // Number of Max7219 units in chain.
   #define MAX7219_ROTATE       0   // Rotate the display clockwise (in multiples of +/- 90°)
                                    // connector at:  right=0   bottom=-90  top=90  left=180

Marlin/Makefile

@@ -267,6 +267,8 @@ else ifeq ($(HARDWARE_MOTHERBOARD),1147)
 else ifeq ($(HARDWARE_MOTHERBOARD),1148)
 # MKS GEN L V2
 else ifeq ($(HARDWARE_MOTHERBOARD),1149)
+# Copymaster 3D
+else ifeq ($(HARDWARE_MOTHERBOARD),1150)
 
 #
 # RAMBo and derivatives
@@ -789,11 +791,11 @@ sym: $(BUILD_DIR)/$(TARGET).sym
 # Do not try to reset an Arduino if it's not one
 upload: $(BUILD_DIR)/$(TARGET).hex
 ifeq (${AVRDUDE_PROGRAMMER}, arduino)
-  stty hup < $(UPLOAD_PORT); true
+	stty hup < $(UPLOAD_PORT); true
 endif
-  $(AVRDUDE) $(AVRDUDE_FLAGS) $(AVRDUDE_WRITE_FLASH)
+	$(AVRDUDE) $(AVRDUDE_FLAGS) $(AVRDUDE_WRITE_FLASH)
 ifeq (${AVRDUDE_PROGRAMMER}, arduino)
-  stty -hup < $(UPLOAD_PORT); true
+	stty -hup < $(UPLOAD_PORT); true
 endif
 
 # Display size of file.
@@ -801,10 +803,10 @@ HEXSIZE = $(SIZE) --target=$(FORMAT) $(BUILD_DIR)/$(TARGET).hex
 ELFSIZE = $(SIZE)  $(SIZE_FLAGS) $(BUILD_DIR)/$(TARGET).elf; \
           $(SIZE)  $(BUILD_DIR)/$(TARGET).elf
 sizebefore:
-  $P if [ -f $(BUILD_DIR)/$(TARGET).elf ]; then echo; echo $(MSG_SIZE_BEFORE); $(HEXSIZE); echo; fi
+	$P if [ -f $(BUILD_DIR)/$(TARGET).elf ]; then echo; echo $(MSG_SIZE_BEFORE); $(HEXSIZE); echo; fi
 
 sizeafter: build
-  $P if [ -f $(BUILD_DIR)/$(TARGET).elf ]; then echo; echo $(MSG_SIZE_AFTER); $(ELFSIZE); echo; fi
+	$P if [ -f $(BUILD_DIR)/$(TARGET).elf ]; then echo; echo $(MSG_SIZE_AFTER); $(ELFSIZE); echo; fi
 
 
 # Convert ELF to COFF for use in debugging / simulating in AVR Studio or VMLAB.
@@ -816,71 +818,71 @@ COFFCONVERT=$(OBJCOPY) --debugging \
 
 
 coff: $(BUILD_DIR)/$(TARGET).elf
-  $(COFFCONVERT) -O coff-avr $(BUILD_DIR)/$(TARGET).elf $(TARGET).cof
+	$(COFFCONVERT) -O coff-avr $(BUILD_DIR)/$(TARGET).elf $(TARGET).cof
 
 
 extcoff: $(TARGET).elf
-  $(COFFCONVERT) -O coff-ext-avr $(BUILD_DIR)/$(TARGET).elf $(TARGET).cof
+	$(COFFCONVERT) -O coff-ext-avr $(BUILD_DIR)/$(TARGET).elf $(TARGET).cof
 
 
 .SUFFIXES: .elf .hex .eep .lss .sym .bin
 .PRECIOUS: .o
 
 .elf.hex:
-  $(Pecho) "  COPY  $@"
-  $P $(OBJCOPY) -O $(FORMAT) -R .eeprom $< $@
+	$(Pecho) "  COPY  $@"
+	$P $(OBJCOPY) -O $(FORMAT) -R .eeprom $< $@
 
 .elf.bin:
-  $(Pecho) "  COPY  $@"
-  $P $(OBJCOPY) -O binary -R .eeprom $< $@
+	$(Pecho) "  COPY  $@"
+	$P $(OBJCOPY) -O binary -R .eeprom $< $@
 
 .elf.eep:
-  -$(OBJCOPY) -j .eeprom --set-section-flags=.eeprom="alloc,load" \
+	-$(OBJCOPY) -j .eeprom --set-section-flags=.eeprom="alloc,load" \
     --change-section-lma .eeprom=0 -O $(FORMAT) $< $@
 
 # Create extended listing file from ELF output file.
 .elf.lss:
-  $(OBJDUMP) -h -S $< > $@
+	$(OBJDUMP) -h -S $< > $@
 
 # Create a symbol table from ELF output file.
 .elf.sym:
-  $(NM) -n $< > $@
+	$(NM) -n $< > $@
 
 # Link: create ELF output file from library.
 
 $(BUILD_DIR)/$(TARGET).elf: $(OBJ) Configuration.h
-  $(Pecho) "  CXX   $@"
-  $P $(CC) $(LD_PREFIX) $(ALL_CXXFLAGS) -o $@ -L. $(OBJ) $(LDFLAGS) $(LD_SUFFIX)
+	$(Pecho) "  CXX   $@"
+	$P $(CC) $(LD_PREFIX) $(ALL_CXXFLAGS) -o $@ -L. $(OBJ) $(LDFLAGS) $(LD_SUFFIX)
 
 # Object files that were found in "src" will be stored in $(BUILD_DIR)
 # in directories that mirror the structure of "src"
 
 $(BUILD_DIR)/%.o: %.c Configuration.h Configuration_adv.h $(MAKEFILE)
-  $(Pecho) "  CC    $<"
-  $P $(CC) -MMD -c $(ALL_CFLAGS) $(CWARN) $< -o $@
+	$(Pecho) "  CC    $<"
+	$P $(CC) -MMD -c $(ALL_CFLAGS) $(CWARN) $< -o $@
 
 $(BUILD_DIR)/%.o: %.cpp Configuration.h Configuration_adv.h $(MAKEFILE)
-  $(Pecho) "  CXX   $<"
-  $P $(CXX) -MMD -c $(ALL_CXXFLAGS) $(CXXWARN) $< -o $@
+	$(Pecho) "  CXX   $<"
+	$P $(CXX) -MMD -c $(ALL_CXXFLAGS) $(CXXWARN) $< -o $@
 
 # Object files for Arduino libs will be created in $(BUILD_DIR)/arduino
 
 $(BUILD_DIR)/arduino/%.o: %.c Configuration.h Configuration_adv.h $(MAKEFILE)
-  $(Pecho) "  CC    $<"
-  $P $(CC) -MMD -c $(ALL_CFLAGS) $(LIBWARN) $< -o $@
+	$(Pecho) "  CC    $<"
+	$P $(CC) -MMD -c $(ALL_CFLAGS) $(LIBWARN) $< -o $@
 
 $(BUILD_DIR)/arduino/%.o: %.cpp Configuration.h Configuration_adv.h $(MAKEFILE)
-  $(Pecho) "  CXX   $<"
-  $P $(CXX) -MMD -c $(ALL_CXXFLAGS)  $(LIBWARN) $< -o $@
+	$(Pecho) "  CXX   $<"
+	$P $(CXX) -MMD -c $(ALL_CXXFLAGS)  $(LIBWARN) $< -o $@
 
 $(BUILD_DIR)/arduino/%.o: %.S $(MAKEFILE)
-  $(Pecho) "  CXX   $<"
-  $P $(CXX) -MMD -c $(ALL_ASFLAGS) $< -o $@
+	$(Pecho) "  CXX   $<"
+	$P $(CXX) -MMD -c $(ALL_ASFLAGS) $< -o $@
 
 # Target: clean project.
 clean:
-  $(Pecho) "  RMDIR $(BUILD_DIR)/"
-  $P rm -rf $(BUILD_DIR)
+	$(Pecho) "  RMDIR $(BUILD_DIR)/"
+	$P rm -rf $(BUILD_DIR)
 
 
 .PHONY: all build elf hex eep lss sym program coff extcoff clean depend sizebefore sizeafter

Marlin/Version.h

@@ -28,7 +28,7 @@
 /**
  * Marlin release version identifier
  */
-//#define SHORT_BUILD_VERSION "2.0.4.1"
+//#define SHORT_BUILD_VERSION "2.0.5.5"
 
 /**
  * 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 "2020-01-31"
+//#define STRING_DISTRIBUTION_DATE "2023-07-18"
 
 /**
  * Defines a generic printer name to be output to the LCD after booting Marlin.

Marlin/src/HAL/AVR/HAL_SPI.cpp

@@ -197,7 +197,7 @@ void spiBegin() {
     // output pin high - like sending 0xFF
     WRITE(MOSI_PIN, HIGH);
 
-    for (uint8_t i = 0; i < 8; i++) {
+    LOOP_L_N(i, 8) {
       WRITE(SCK_PIN, HIGH);
 
       nop; // adjust so SCK is nice
@@ -224,7 +224,7 @@ void spiBegin() {
   void spiSend(uint8_t data) {
     // no interrupts during byte send - about 8µs
     cli();
-    for (uint8_t i = 0; i < 8; i++) {
+    LOOP_L_N(i, 8) {
       WRITE(SCK_PIN, LOW);
       WRITE(MOSI_PIN, data & 0x80);
       data <<= 1;

Marlin/src/HAL/AVR/MarlinSerial.cpp

@@ -55,7 +55,7 @@
   // A SW memory barrier, to ensure GCC does not overoptimize loops
   #define sw_barrier() asm volatile("": : :"memory");
 
-  #include "../../feature/emergency_parser.h"
+  #include "../../feature/e_parser.h"
 
   // "Atomically" read the RX head index value without disabling interrupts:
   // This MUST be called with RX interrupts enabled, and CAN'T be called
@@ -682,7 +682,7 @@
 
     // Round correctly so that print(1.999, 2) prints as "2.00"
     double rounding = 0.5;
-    for (uint8_t i = 0; i < digits; ++i) rounding *= 0.1;
+    LOOP_L_N(i, digits) rounding *= 0.1;
     number += rounding;
 
     // Extract the integer part of the number and print it

Marlin/src/HAL/AVR/MarlinSerial.h

@@ -31,10 +31,10 @@
  * Templatized 01 October 2018 by Eduardo José Tagle to allow multiple instances
  */
 
-#include "../shared/MarlinSerial.h"
-
 #include <WString.h>
 
+#include "../../inc/MarlinConfigPre.h"
+
 #ifndef SERIAL_PORT
   #define SERIAL_PORT 0
 #endif
@@ -261,12 +261,12 @@
     static constexpr int PORT               = serial;
     static constexpr unsigned int RX_SIZE   = RX_BUFFER_SIZE;
     static constexpr unsigned int TX_SIZE   = TX_BUFFER_SIZE;
-    static constexpr bool XONOFF            = bSERIAL_XON_XOFF;
-    static constexpr bool EMERGENCYPARSER   = bEMERGENCY_PARSER;
-    static constexpr bool DROPPED_RX        = bSERIAL_STATS_DROPPED_RX;
-    static constexpr bool RX_OVERRUNS       = bSERIAL_STATS_RX_BUFFER_OVERRUNS;
-    static constexpr bool RX_FRAMING_ERRORS = bSERIAL_STATS_RX_FRAMING_ERRORS;
-    static constexpr bool MAX_RX_QUEUED     = bSERIAL_STATS_MAX_RX_QUEUED;
+    static constexpr bool XONOFF            = ENABLED(SERIAL_XON_XOFF);
+    static constexpr bool EMERGENCYPARSER   = ENABLED(EMERGENCY_PARSER);
+    static constexpr bool DROPPED_RX        = ENABLED(SERIAL_STATS_DROPPED_RX);
+    static constexpr bool RX_OVERRUNS       = ENABLED(SERIAL_STATS_RX_BUFFER_OVERRUNS);
+    static constexpr bool RX_FRAMING_ERRORS = ENABLED(SERIAL_STATS_RX_FRAMING_ERRORS);
+    static constexpr bool MAX_RX_QUEUED     = ENABLED(SERIAL_STATS_MAX_RX_QUEUED);
   };
   extern MarlinSerial<MarlinSerialCfg<SERIAL_PORT>> customizedSerial1;
 
@@ -304,7 +304,7 @@
     static constexpr bool XONOFF            = false;
     static constexpr bool EMERGENCYPARSER   = false;
     static constexpr bool DROPPED_RX        = false;
-    static constexpr bool RX_OVERRUNS       = bDGUS_SERIAL_STATS_RX_BUFFER_OVERRUNS;
+    static constexpr bool RX_OVERRUNS       = HAS_DGUS_LCD && ENABLED(DGUS_SERIAL_STATS_RX_BUFFER_OVERRUNS);
     static constexpr bool RX_FRAMING_ERRORS = false;
     static constexpr bool MAX_RX_QUEUED     = false;
   };

Marlin/src/HAL/AVR/eeprom.cpp

@@ -25,7 +25,7 @@
 
 #if EITHER(EEPROM_SETTINGS, SD_FIRMWARE_UPDATE)
 
-#include "../shared/persistent_store_api.h"
+#include "../shared/eeprom_api.h"
 
 bool PersistentStore::access_start() { return true; }
 bool PersistentStore::access_finish() { return true; }
@@ -39,7 +39,7 @@ bool PersistentStore::write_data(int &pos, const uint8_t *value, size_t size, ui
     if (v != eeprom_read_byte(p)) {
       eeprom_write_byte(p, v);
       if (eeprom_read_byte(p) != v) {
-        SERIAL_ECHO_MSG(MSG_ERR_EEPROM_WRITE);
+        SERIAL_ECHO_MSG(STR_ERR_EEPROM_WRITE);
         return true;
       }
     }

Marlin/src/HAL/AVR/fast_pwm.cpp

@@ -167,7 +167,7 @@ void set_pwm_frequency(const pin_t pin, int f_desired) {
     uint16_t prescaler[] = { 0, 1, 8, /*TIMER2 ONLY*/32, 64, /*TIMER2 ONLY*/128, 256, 1024 };
 
     // loop over prescaler values
-    for (uint8_t i = 1; i < 8; i++) {
+    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

Marlin/src/HAL/AVR/fastio.h

@@ -98,9 +98,9 @@
 
 #define SET_INPUT(IO)         _SET_INPUT(IO)
 #define SET_INPUT_PULLUP(IO)  do{ _SET_INPUT(IO); _WRITE(IO, HIGH); }while(0)
+#define SET_INPUT_PULLDOWN    SET_INPUT
 #define SET_OUTPUT(IO)        _SET_OUTPUT(IO)
-
-#define SET_PWM(IO)           SET_OUTPUT(IO)
+#define SET_PWM               SET_OUTPUT
 
 #define IS_INPUT(IO)          _IS_INPUT(IO)
 #define IS_OUTPUT(IO)         _IS_OUTPUT(IO)

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

@@ -26,7 +26,7 @@
  *
  *   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 72 75 76 77 74 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
  */
 
 #include "../fastio.h"

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

@@ -56,7 +56,7 @@
 /**
  * The Trinamic library includes SoftwareSerial.h, leading to a compile error.
  */
-#if HAS_TRINAMIC && ENABLED(ENDSTOP_INTERRUPTS_FEATURE)
+#if HAS_TRINAMIC_CONFIG && ENABLED(ENDSTOP_INTERRUPTS_FEATURE)
   #error "TMCStepper includes SoftwareSerial.h which is incompatible with ENDSTOP_INTERRUPTS_FEATURE. Disable ENDSTOP_INTERRUPTS_FEATURE to continue."
 #endif
 

Marlin/src/HAL/AVR/pinsDebug.h

@@ -70,12 +70,12 @@
 
 void PRINT_ARRAY_NAME(uint8_t x) {
   char *name_mem_pointer = (char*)pgm_read_ptr(&pin_array[x].name);
-  for (uint8_t y = 0; y < MAX_NAME_LENGTH; y++) {
+  LOOP_L_N(y, MAX_NAME_LENGTH) {
     char temp_char = pgm_read_byte(name_mem_pointer + y);
     if (temp_char != 0)
       SERIAL_CHAR(temp_char);
     else {
-      for (uint8_t i = 0; i < MAX_NAME_LENGTH - y; i++) SERIAL_CHAR(' ');
+      LOOP_L_N(i, MAX_NAME_LENGTH - y) SERIAL_CHAR(' ');
       break;
     }
   }

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();
-  for (uint8_t i = 0; i < 8; i++) {
+  LOOP_L_N(i, 8) {
     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();
-  for (uint8_t i = 0; i < 8; i++) {
+  LOOP_L_N(i, 8) {
     *outClock &= bitNotClock;
     if (val & 0x80)
       *outData |= bitData;

Marlin/src/HAL/AVR/watchdog.cpp

@@ -62,7 +62,7 @@ void watchdog_init() {
 #if ENABLED(WATCHDOG_RESET_MANUAL)
   ISR(WDT_vect) {
     sei();  // With the interrupt driven serial we need to allow interrupts.
-    SERIAL_ERROR_MSG(MSG_WATCHDOG_FIRED);
+    SERIAL_ERROR_MSG(STR_WATCHDOG_FIRED);
     minkill();  // interrupt-safe final kill and infinite loop
   }
 #endif

Marlin/src/HAL/DUE/EepromEmulation.cpp

@@ -54,10 +54,10 @@
 
 #include "../../inc/MarlinConfig.h"
 
-#if ENABLED(EEPROM_SETTINGS) && NONE(I2C_EEPROM, SPI_EEPROM)
+#if ENABLED(FLASH_EEPROM_EMULATION)
 
 #include "../shared/Marduino.h"
-#include "../shared/persistent_store_api.h"
+#include "../shared/eeprom_api.h"
 
 #define EEPROMSize     4096
 #define PagesPerGroup   128
@@ -1016,5 +1016,5 @@ void eeprom_flush() {
   ee_Flush();
 }
 
-#endif // EEPROM_SETTINGS && (!I2C_EEPROM && !SPI_EEPROM)
+#endif // FLASH_EEPROM_EMULATION
 #endif // ARDUINO_ARCH_AVR

Marlin/src/HAL/DUE/HAL.h

@@ -39,7 +39,7 @@
 #include <stdint.h>
 
 // Define MYSERIAL0/1 before MarlinSerial includes!
-#if SERIAL_PORT == -1
+#if SERIAL_PORT == -1 || ENABLED(EMERGENCY_PARSER)
   #define MYSERIAL0 customizedSerial1
 #elif SERIAL_PORT == 0
   #define MYSERIAL0 Serial
@@ -56,7 +56,7 @@
 #ifdef SERIAL_PORT_2
   #if SERIAL_PORT_2 == SERIAL_PORT
     #error "SERIAL_PORT_2 must be different from SERIAL_PORT. Please update your configuration."
-  #elif SERIAL_PORT_2 == -1
+  #elif SERIAL_PORT_2 == -1 || ENABLED(EMERGENCY_PARSER)
     #define MYSERIAL1 customizedSerial2
   #elif SERIAL_PORT_2 == 0
     #define MYSERIAL1 Serial
@@ -94,7 +94,6 @@
   #endif
 #endif
 
-
 #include "MarlinSerial.h"
 #include "MarlinSerialUSB.h"
 

Marlin/src/HAL/DUE/MarlinSerial.cpp

@@ -45,7 +45,7 @@ template<typename Cfg> typename MarlinSerial<Cfg>::ring_buffer_pos_t MarlinSeria
 // A SW memory barrier, to ensure GCC does not overoptimize loops
 #define sw_barrier() asm volatile("": : :"memory");
 
-#include "../../feature/emergency_parser.h"
+#include "../../feature/e_parser.h"
 
 // (called with RX interrupts disabled)
 template<typename Cfg>
@@ -606,7 +606,7 @@ void MarlinSerial<Cfg>::printFloat(double number, uint8_t digits) {
 
   // Round correctly so that print(1.999, 2) prints as "2.00"
   double rounding = 0.5;
-  for (uint8_t i = 0; i < digits; ++i) rounding *= 0.1;
+  LOOP_L_N(i, digits) rounding *= 0.1;
   number += rounding;
 
   // Extract the integer part of the number and print it
@@ -629,23 +629,13 @@ void MarlinSerial<Cfg>::printFloat(double number, uint8_t digits) {
 
 // If not using the USB port as serial port
 #if SERIAL_PORT >= 0
-
-  // Preinstantiate
-  template class MarlinSerial<MarlinSerialCfg<SERIAL_PORT>>;
-
-  // Instantiate
-  MarlinSerial<MarlinSerialCfg<SERIAL_PORT>> customizedSerial1;
-
+  template class MarlinSerial<MarlinSerialCfg<SERIAL_PORT>>;      // Define
+  MarlinSerial<MarlinSerialCfg<SERIAL_PORT>> customizedSerial1;   // Instantiate
 #endif
 
-#ifdef SERIAL_PORT_2
-
-  // Preinstantiate
-  template class MarlinSerial<MarlinSerialCfg<SERIAL_PORT_2>>;
-
-  // Instantiate
-  MarlinSerial<MarlinSerialCfg<SERIAL_PORT_2>> customizedSerial2;
-
+#if defined(SERIAL_PORT_2) && SERIAL_PORT_2 >= 0
+  template class MarlinSerial<MarlinSerialCfg<SERIAL_PORT_2>>;    // Define
+  MarlinSerial<MarlinSerialCfg<SERIAL_PORT_2>> customizedSerial2; // Instantiate
 #endif
 
 #endif // ARDUINO_ARCH_SAM

Marlin/src/HAL/DUE/MarlinSerial.h

@@ -27,10 +27,10 @@
  * Based on MarlinSerial for AVR, copyright (c) 2006 Nicholas Zambetti.  All right reserved.
  */
 
-#include "../shared/MarlinSerial.h"
-
 #include <WString.h>
 
+#include "../../inc/MarlinConfigPre.h"
+
 #define DEC 10
 #define HEX 16
 #define OCT 8
@@ -163,22 +163,18 @@ struct MarlinSerialCfg {
   static constexpr int PORT               = serial;
   static constexpr unsigned int RX_SIZE   = RX_BUFFER_SIZE;
   static constexpr unsigned int TX_SIZE   = TX_BUFFER_SIZE;
-  static constexpr bool XONOFF            = bSERIAL_XON_XOFF;
-  static constexpr bool EMERGENCYPARSER   = bEMERGENCY_PARSER;
-  static constexpr bool DROPPED_RX        = bSERIAL_STATS_DROPPED_RX;
-  static constexpr bool RX_OVERRUNS       = bSERIAL_STATS_RX_BUFFER_OVERRUNS;
-  static constexpr bool RX_FRAMING_ERRORS = bSERIAL_STATS_RX_FRAMING_ERRORS;
-  static constexpr bool MAX_RX_QUEUED     = bSERIAL_STATS_MAX_RX_QUEUED;
+  static constexpr bool XONOFF            = ENABLED(SERIAL_XON_XOFF);
+  static constexpr bool EMERGENCYPARSER   = ENABLED(EMERGENCY_PARSER);
+  static constexpr bool DROPPED_RX        = ENABLED(SERIAL_STATS_DROPPED_RX);
+  static constexpr bool RX_OVERRUNS       = ENABLED(SERIAL_STATS_RX_BUFFER_OVERRUNS);
+  static constexpr bool RX_FRAMING_ERRORS = ENABLED(SERIAL_STATS_RX_FRAMING_ERRORS);
+  static constexpr bool MAX_RX_QUEUED     = ENABLED(SERIAL_STATS_MAX_RX_QUEUED);
 };
 
 #if SERIAL_PORT >= 0
-
   extern MarlinSerial<MarlinSerialCfg<SERIAL_PORT>> customizedSerial1;
-
-#endif // SERIAL_PORT >= 0
-
-#ifdef SERIAL_PORT_2
-
-  extern MarlinSerial<MarlinSerialCfg<SERIAL_PORT_2>> customizedSerial2;
-
+#endif
+
+#if defined(SERIAL_PORT_2) && SERIAL_PORT_2 >= 0
+  extern MarlinSerial<MarlinSerialCfg<SERIAL_PORT_2>> customizedSerial2;
 #endif

Marlin/src/HAL/DUE/MarlinSerialUSB.cpp

@@ -29,12 +29,12 @@
 
 #include "../../inc/MarlinConfig.h"
 
-#if SERIAL_PORT == -1
+#if HAS_USB_SERIAL
 
 #include "MarlinSerialUSB.h"
 
 #if ENABLED(EMERGENCY_PARSER)
-  #include "../../feature/emergency_parser.h"
+  #include "../../feature/e_parser.h"
 #endif
 
 // Imports from Atmel USB Stack/CDC implementation
@@ -259,7 +259,7 @@ void MarlinSerialUSB::printFloat(double number, uint8_t digits) {
 
   // Round correctly so that print(1.999, 2) prints as "2.00"
   double rounding = 0.5;
-  for (uint8_t i = 0; i < digits; ++i)
+  LOOP_L_N(i, digits)
     rounding *= 0.1;
 
   number += rounding;
@@ -283,8 +283,12 @@ void MarlinSerialUSB::printFloat(double number, uint8_t digits) {
 }
 
 // Preinstantiate
-MarlinSerialUSB customizedSerial1;
-
-#endif // SERIAL_PORT == -1
+#if SERIAL_PORT == -1
+  MarlinSerialUSB customizedSerial1;
+#endif
+#if SERIAL_PORT_2 == -1
+  MarlinSerialUSB customizedSerial2;
+#endif
 
+#endif // HAS_USB_SERIAL
 #endif // ARDUINO_ARCH_SAM

Marlin/src/HAL/DUE/MarlinSerialUSB.h

@@ -28,7 +28,7 @@
 
 #include "../../inc/MarlinConfig.h"
 
-#if SERIAL_PORT == -1
+#if HAS_USB_SERIAL
 
 #include <WString.h>
 
@@ -88,6 +88,12 @@ private:
   static void printFloat(double, uint8_t);
 };
 
-extern MarlinSerialUSB customizedSerial1;
+#if SERIAL_PORT == -1
+  extern MarlinSerialUSB customizedSerial1;
+#endif
 
-#endif // SERIAL_PORT == -1
+#if SERIAL_PORT_2 == -1
+  extern MarlinSerialUSB customizedSerial2;
+#endif
+
+#endif // HAS_USB_SERIAL

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

@@ -80,7 +80,7 @@ Pio *SCK_pPio, *MOSI_pPio;
 uint32_t SCK_dwMask, MOSI_dwMask;
 
 void u8g_spiSend_sw_DUE_mode_0(uint8_t val) { // 3MHz
-  for (uint8_t i = 0; i < 8; i++) {
+  LOOP_L_N(i, 8) {
     if (val & 0x80)
       MOSI_pPio->PIO_SODR = MOSI_dwMask;
     else
@@ -94,7 +94,7 @@ void u8g_spiSend_sw_DUE_mode_0(uint8_t val) { // 3MHz
 }
 
 void u8g_spiSend_sw_DUE_mode_3(uint8_t val) { // 3.5MHz
-  for (uint8_t i = 0; i < 8; i++) {
+  LOOP_L_N(i, 8) {
     SCK_pPio->PIO_CODR = SCK_dwMask;
     DELAY_NS(50);
     if (val & 0x80)

Marlin/src/HAL/DUE/eeprom.cpp

@@ -27,9 +27,9 @@
 #if ENABLED(EEPROM_SETTINGS)
 
 #include "../../inc/MarlinConfig.h"
-#include "../shared/persistent_store_api.h"
+#include "../shared/eeprom_api.h"
 
-#if !defined(E2END) && NONE(I2C_EEPROM, SPI_EEPROM)
+#if !defined(E2END) && ENABLED(FLASH_EEPROM_EMULATION)
   #define E2END 0xFFF // Default to Flash emulated EEPROM size (EepromEmulation_Due.cpp)
 #endif
 
@@ -38,7 +38,7 @@ extern void eeprom_flush();
 bool PersistentStore::access_start() { return true; }
 
 bool PersistentStore::access_finish() {
-  #if NONE(I2C_EEPROM, SPI_EEPROM)
+  #if ENABLED(FLASH_EEPROM_EMULATION)
     eeprom_flush();
   #endif
   return true;
@@ -54,7 +54,7 @@ bool PersistentStore::write_data(int &pos, const uint8_t *value, size_t size, ui
       eeprom_write_byte(p, v);
       delay(2);
       if (eeprom_read_byte(p) != v) {
-        SERIAL_ECHO_MSG(MSG_ERR_EEPROM_WRITE);
+        SERIAL_ECHO_MSG(STR_ERR_EEPROM_WRITE);
         return true;
       }
     }

Marlin/src/HAL/DUE/fastio.h

@@ -166,7 +166,7 @@
 // Set pin as output (wrapper) -  reads the pin and sets the output to that value
 #define SET_OUTPUT(IO)       _SET_OUTPUT(IO)
 // Set pin as PWM
-#define SET_PWM(IO)           SET_OUTPUT(IO)
+#define SET_PWM               SET_OUTPUT
 
 // Check if pin is an input
 #define IS_INPUT(IO)         ((digitalPinToPort(IO)->PIO_OSR & digitalPinToBitMask(IO)) == 0)

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

@@ -0,0 +1,206 @@
+/**
+ * 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 <http://www.gnu.org/licenses/>.
+ *
+ */
+
+/**
+ * The PWM module is only used to generate interrupts at specified times. It
+ * 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
+ * not have obvious ripple on the Vref signals.
+ *
+ * The data structures are setup to minimize the computation done by the ISR which
+ * minimizes ISR execution time.  Execution times are 0.8 to 1.1 microseconds.
+ *
+ * FIve PWM interrupt sources are used.  Channel 0 sets the base period.  All Vref
+ * signals are set active when this counter overflows and resets to zero.  The compare
+ * values in channels 1-4 are set to give the desired duty cycle for that Vref pin.
+ * When counter 0 matches the compare value then that channel generates an interrupt.
+ * The ISR checks the source of the interrupt and sets the corresponding pin inactive.
+ *
+ * Some jitter in the Vref signal is OK so the interrupt priority is left at its default value.
+ */
+
+#include "../../../inc/MarlinConfig.h"
+
+#if MB(PRINTRBOARD_G2)
+
+#include "G2_PWM.h"
+
+#if PIN_EXISTS(MOTOR_CURRENT_PWM_X)
+  #define G2_PWM_X 1
+#else
+  #define G2_PWM_X 0
+#endif
+#if PIN_EXISTS(MOTOR_CURRENT_PWM_Y)
+  #define G2_PWM_Y 1
+#else
+  #define G2_PWM_Y 0
+#endif
+#if PIN_EXISTS(MOTOR_CURRENT_PWM_Z)
+  #define G2_PWM_Z 1
+#else
+  #define G2_PWM_Z 0
+#endif
+#if PIN_EXISTS(MOTOR_CURRENT_PWM_E)
+  #define G2_PWM_E 1
+#else
+  #define G2_PWM_E 0
+#endif
+#define G2_MASK_X(V) (G2_PWM_X * (V))
+#define G2_MASK_Y(V) (G2_PWM_Y * (V))
+#define G2_MASK_Z(V) (G2_PWM_Z * (V))
+#define G2_MASK_E(V) (G2_PWM_E * (V))
+
+volatile uint32_t *SODR_A = &PIOA->PIO_SODR,
+                  *SODR_B = &PIOB->PIO_SODR,
+                  *CODR_A = &PIOA->PIO_CODR,
+                  *CODR_B = &PIOB->PIO_CODR;
+
+PWM_map ISR_table[NUM_PWMS] = PWM_MAP_INIT;
+
+void Stepper::digipot_init() {
+
+  #if PIN_EXISTS(MOTOR_CURRENT_PWM_X)
+    OUT_WRITE(MOTOR_CURRENT_PWM_X_PIN, 0);  // init pins
+  #endif
+  #if PIN_EXISTS(MOTOR_CURRENT_PWM_Y)
+    OUT_WRITE(MOTOR_CURRENT_PWM_Y_PIN, 0);
+  #endif
+  #if G2_PWM_Z
+    OUT_WRITE(MOTOR_CURRENT_PWM_Z_PIN, 0);
+  #endif
+  #if G2_PWM_E
+    OUT_WRITE(MOTOR_CURRENT_PWM_E_PIN, 0);
+  #endif
+
+  #define WPKEY          (0x50574D << 8) // “PWM” in ASCII
+  #define WPCMD_DIS_SW   0  // command to disable Write Protect SW
+  #define WPRG_ALL       (PWM_WPCR_WPRG0 | PWM_WPCR_WPRG1 | PWM_WPCR_WPRG2 | PWM_WPCR_WPRG3 | PWM_WPCR_WPRG4 | PWM_WPCR_WPRG5)  // all Write Protect Groups
+
+  #define PWM_CLOCK_F    F_CPU / 1000000UL   // set clock to 1MHz
+
+  PMC->PMC_PCER1 = PMC_PCER1_PID36;                       // enable PWM controller clock (disabled on power up)
+
+  PWM->PWM_WPCR = WPKEY | WPRG_ALL | WPCMD_DIS_SW;        // enable setting of all PWM registers
+  PWM->PWM_CLK = PWM_CLOCK_F;                             // enable CLK_A and set it to 1MHz, leave CLK_B disabled
+  PWM->PWM_CH_NUM[0].PWM_CMR = 0b1011;                    // set channel 0 to Clock A input & to left aligned
+  if (G2_PWM_X) PWM->PWM_CH_NUM[1].PWM_CMR = 0b1011;      // set channel 1 to Clock A input & to left aligned
+  if (G2_PWM_Y) PWM->PWM_CH_NUM[2].PWM_CMR = 0b1011;      // set channel 2 to Clock A input & to left aligned
+  if (G2_PWM_Z) PWM->PWM_CH_NUM[3].PWM_CMR = 0b1011;      // set channel 3 to Clock A input & to left aligned
+  if (G2_PWM_E) PWM->PWM_CH_NUM[4].PWM_CMR = 0b1011;      // set channel 4 to Clock A input & to left aligned
+
+  PWM->PWM_CH_NUM[0].PWM_CPRD = PWM_PERIOD_US;            // set channel 0 Period
+
+  PWM->PWM_IER2 = PWM_IER1_CHID0;                         // generate interrupt when counter0 overflows
+  PWM->PWM_IER2 = PWM_IER2_CMPM0
+    | G2_MASK_X(PWM_IER2_CMPM1)
+    | G2_MASK_Y(PWM_IER2_CMPM2)
+    | G2_MASK_Z(PWM_IER2_CMPM3)
+    | G2_MASK_E(PWM_IER2_CMPM4)
+  ; // generate interrupt on compare event
+
+  if (G2_PWM_X) PWM->PWM_CMP[1].PWM_CMPV = 0x010000000LL | G2_VREF_COUNT(G2_VREF(motor_current_setting[0])); // interrupt when counter0 == CMPV - used to set Motor 1 PWM inactive
+  if (G2_PWM_Y) PWM->PWM_CMP[2].PWM_CMPV = 0x010000000LL | G2_VREF_COUNT(G2_VREF(motor_current_setting[0])); // interrupt when counter0 == CMPV - used to set Motor 2 PWM inactive
+  if (G2_PWM_Z) PWM->PWM_CMP[3].PWM_CMPV = 0x010000000LL | G2_VREF_COUNT(G2_VREF(motor_current_setting[1])); // interrupt when counter0 == CMPV - used to set Motor 3 PWM inactive
+  if (G2_PWM_E) PWM->PWM_CMP[4].PWM_CMPV = 0x010000000LL | G2_VREF_COUNT(G2_VREF(motor_current_setting[2])); // interrupt when counter0 == CMPV - used to set Motor 4 PWM inactive
+
+  if (G2_PWM_X) PWM->PWM_CMP[1].PWM_CMPM = 0x0001;  // enable compare event
+  if (G2_PWM_Y) PWM->PWM_CMP[2].PWM_CMPM = 0x0001;  // enable compare event
+  if (G2_PWM_Z) PWM->PWM_CMP[3].PWM_CMPM = 0x0001;  // enable compare event
+  if (G2_PWM_E) PWM->PWM_CMP[4].PWM_CMPM = 0x0001;  // enable compare event
+
+  PWM->PWM_SCM = PWM_SCM_UPDM_MODE0 | PWM_SCM_SYNC0
+    | G2_MASK_X(PWM_SCM_SYNC1)
+    | G2_MASK_Y(PWM_SCM_SYNC2)
+    | G2_MASK_Z(PWM_SCM_SYNC3)
+    | G2_MASK_E(PWM_SCM_SYNC4)
+  ; // sync 1-4 with 0, use mode 0 for updates
+
+  PWM->PWM_ENA = PWM_ENA_CHID0
+    | G2_MASK_X(PWM_ENA_CHID1)
+    | G2_MASK_Y(PWM_ENA_CHID2)
+    | G2_MASK_Z(PWM_ENA_CHID3)
+    | G2_MASK_E(PWM_ENA_CHID4)
+  ; // enable channels used by G2
+
+  PWM->PWM_IER1 = PWM_IER1_CHID0
+    | G2_MASK_X(PWM_IER1_CHID1)
+    | G2_MASK_Y(PWM_IER1_CHID2)
+    | G2_MASK_Z(PWM_IER1_CHID3)
+    | G2_MASK_E(PWM_IER1_CHID4)
+  ; // enable interrupts for channels used by G2
+
+  NVIC_EnableIRQ(PWM_IRQn);     // Enable interrupt handler
+  NVIC_SetPriority(PWM_IRQn, NVIC_EncodePriority(0, 10, 0));  // normal priority for PWM module (can stand some jitter on the Vref signals)
+}
+
+void Stepper::digipot_current(const uint8_t driver, const int16_t current) {
+
+  if (!(PWM->PWM_CH_NUM[0].PWM_CPRD == PWM_PERIOD_US)) digipot_init();  // Init PWM system if needed
+
+  switch (driver) {
+    case 0:
+      if (G2_PWM_X) PWM->PWM_CMP[1].PWM_CMPVUPD = 0x010000000LL | G2_VREF_COUNT(G2_VREF(current));    // update X & Y
+      if (G2_PWM_Y) PWM->PWM_CMP[2].PWM_CMPVUPD = 0x010000000LL | G2_VREF_COUNT(G2_VREF(current));
+      if (G2_PWM_X) PWM->PWM_CMP[1].PWM_CMPMUPD = 0x0001;  // enable compare event
+      if (G2_PWM_Y) PWM->PWM_CMP[2].PWM_CMPMUPD = 0x0001;  // enable compare event
+      if (G2_PWM_X || G2_PWM_Y) PWM->PWM_SCUC = PWM_SCUC_UPDULOCK; // tell the PWM controller to update the values on the next cycle
+      break;
+    case 1:
+      if (G2_PWM_Z) {
+        PWM->PWM_CMP[3].PWM_CMPVUPD = 0x010000000LL | G2_VREF_COUNT(G2_VREF(current));    // update Z
+        PWM->PWM_CMP[3].PWM_CMPMUPD = 0x0001;  // enable compare event
+        PWM->PWM_SCUC = PWM_SCUC_UPDULOCK; // tell the PWM controller to update the values on the next cycle
+      }
+      break;
+    default:
+      if (G2_PWM_E) {
+        PWM->PWM_CMP[4].PWM_CMPVUPD = 0x010000000LL | G2_VREF_COUNT(G2_VREF(current));    // update E
+        PWM->PWM_CMP[4].PWM_CMPMUPD = 0x0001;  // enable compare event
+        PWM->PWM_SCUC = PWM_SCUC_UPDULOCK; // tell the PWM controller to update the values on the next cycle
+      }
+      break;
+  }
+}
+
+volatile uint32_t PWM_ISR1_STATUS, PWM_ISR2_STATUS;
+
+void PWM_Handler() {
+  PWM_ISR1_STATUS = PWM->PWM_ISR1;
+  PWM_ISR2_STATUS = PWM->PWM_ISR2;
+  if (PWM_ISR1_STATUS & PWM_IER1_CHID0) {                                                         // CHAN_0 interrupt
+    if (G2_PWM_X) *ISR_table[0].set_register = ISR_table[0].write_mask;                           // set X to active
+    if (G2_PWM_Y) *ISR_table[1].set_register = ISR_table[1].write_mask;                           // set Y to active
+    if (G2_PWM_Z) *ISR_table[2].set_register = ISR_table[2].write_mask;                           // set Z to active
+    if (G2_PWM_E) *ISR_table[3].set_register = ISR_table[3].write_mask;                           // set E to active
+  }
+  else {
+    if (G2_PWM_X && (PWM_ISR2_STATUS & PWM_IER2_CMPM1)) *ISR_table[0].clr_register = ISR_table[0].write_mask; // set X to inactive
+    if (G2_PWM_Y && (PWM_ISR2_STATUS & PWM_IER2_CMPM2)) *ISR_table[1].clr_register = ISR_table[1].write_mask; // set Y to inactive
+    if (G2_PWM_Z && (PWM_ISR2_STATUS & PWM_IER2_CMPM3)) *ISR_table[2].clr_register = ISR_table[2].write_mask; // set Z to inactive
+    if (G2_PWM_E && (PWM_ISR2_STATUS & PWM_IER2_CMPM4)) *ISR_table[3].clr_register = ISR_table[3].write_mask; // set E to inactive
+  }
+  return;
+}
+
+#endif // PRINTRBOARD_G2

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

@@ -63,7 +63,7 @@ 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{ for (uint8_t i = 0; i < 6 ; i++) work_table[i] = active_table[i]; }while(0)
+#define COPY_ACTIVE_TABLE() do{ LOOP_L_N(i, 6) 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/inc/Conditionals_post.h

@@ -20,3 +20,9 @@
  *
  */
 #pragma once
+
+#if USE_FALLBACK_EEPROM
+  #undef SRAM_EEPROM_EMULATION
+  #undef SDCARD_EEPROM_EMULATION
+  #define FLASH_EEPROM_EMULATION
+#endif