Add USB_FLASH_DRIVE_SUPPORT

Marlin/src/sd/usb_flashdrive/Sd2Card_FlashDrive.cpp

@@ -0,0 +1,159 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (C) 2016 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/>.
+ *
+ */
+
+#include "../../inc/MarlinConfigPre.h"
+
+#if ENABLED(USB_FLASH_DRIVE_SUPPORT)
+
+#include "lib/Usb.h"
+#include "lib/masstorage.h"
+
+#include "Sd2Card_FlashDrive.h"
+
+#include <SPI.h>
+
+#include "../../core/serial.h"
+
+USB usb;
+BulkOnly bulk(&usb);
+
+Sd2Card::state_t Sd2Card::state;
+uint32_t         Sd2Card::block;
+
+bool Sd2Card::usbHostReady() {
+  return state == USB_HOST_INITIALIZED;
+}
+
+bool Sd2Card::isInserted() {
+  return usb.getUsbTaskState() == USB_STATE_RUNNING;
+}
+
+// Marlin calls this whenever an SD card is detected, so this method
+// should not be used to initialize the USB host library
+bool Sd2Card::init(uint8_t sckRateID, uint8_t chipSelectPin) {
+  if (!usbHostReady()) return false;
+
+  if (!bulk.LUNIsGood(0)) {
+    SERIAL_ECHOLNPGM("LUN zero is not good\n");
+    return false;
+  }
+
+  SERIAL_ECHOLNPAIR("LUN Capacity: ",bulk.GetCapacity(0));
+
+  const uint32_t sectorSize = bulk.GetSectorSize(0);
+  if (sectorSize != 512) {
+    SERIAL_ECHOLNPAIR("Expecting sector size of 512, got: ",sectorSize);
+    return false;
+  }
+
+  return true;
+}
+
+void Sd2Card::idle() {
+  static uint32_t next_retry;
+
+  switch (state) {
+    case USB_HOST_DELAY_INIT:
+      next_retry = millis() + 10000;
+      state = USB_HOST_WAITING;
+      break;
+    case USB_HOST_WAITING:
+      if (millis() > next_retry) {
+        next_retry = millis() + 10000;
+        state = USB_HOST_UNINITIALIZED;
+      }
+      break;
+    case USB_HOST_UNINITIALIZED:
+      SERIAL_ECHOLNPGM("Starting USB host");
+      if (!usb.start()) {
+        SERIAL_ECHOLNPGM("USB host failed to start. Will retry in 10 seconds.");
+        state = USB_HOST_DELAY_INIT;
+      }
+      else {
+        SERIAL_ECHOLNPGM("USB host initialized");
+        state = USB_HOST_INITIALIZED;
+      }
+      break;
+    case USB_HOST_INITIALIZED:
+      const uint8_t lastUsbTaskState = usb.getUsbTaskState();
+      usb.Task();
+      const uint8_t newUsbTaskState  = usb.getUsbTaskState();
+
+      if (lastUsbTaskState == USB_STATE_RUNNING && newUsbTaskState != USB_STATE_RUNNING) {
+        // the user pulled the flash drive. Make sure the bulk storage driver releases the address
+        SERIAL_ECHOLNPGM("Drive removed\n");
+        //bulk.Release();
+      }
+      if (lastUsbTaskState != USB_STATE_RUNNING && newUsbTaskState == USB_STATE_RUNNING)
+        SERIAL_ECHOLNPGM("Drive inserted\n");
+      break;
+  }
+}
+
+uint32_t Sd2Card::cardSize() {
+  if (!usbHostReady()) return 0;
+  return bulk.GetCapacity(0);
+}
+
+bool Sd2Card::readData(uint8_t* dst) {
+  return readBlock(block++, dst);
+}
+
+bool Sd2Card::readStart(uint32_t blockNumber) {
+  block = blockNumber;
+  return true;
+}
+
+bool Sd2Card::readStop() {
+  return usbHostReady();
+}
+
+bool Sd2Card::readBlock(uint32_t block, uint8_t* dst) {
+  if (!usbHostReady()) {
+    SERIAL_ECHOLNPGM("Read from uninitalized USB host");
+    return false;
+  }
+  return bulk.Read(0, block, 512, 1, dst) == 0;
+}
+
+bool Sd2Card::writeData(const uint8_t* src) {
+  return writeBlock(block++, src);
+}
+
+bool Sd2Card::writeStart(uint32_t blockNumber, uint32_t eraseCount) {
+  block = blockNumber;
+  return true;
+}
+
+bool Sd2Card::writeStop() {
+  return usbHostReady();
+}
+
+bool Sd2Card::writeBlock(uint32_t blockNumber, const uint8_t* src) {
+  if (!usbHostReady()) {
+    SERIAL_ECHOLNPGM("Write to uninitalized USB host");
+    return false;
+  }
+  return bulk.Write(0, blockNumber, 512, 1, src) == 0;
+}
+
+#endif // USB_FLASH_DRIVE_SUPPORT