Add USB_FLASH_DRIVE_SUPPORT

Marlin/src/sd/usb_flashdrive/Sd2Card_FlashDrive.h

@@ -0,0 +1,91 @@
+/**
+ * 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/>.
+ *
+ */
+
+/**
+ * \file
+ * \brief Sd2Card class for V2 SD/SDHC cards
+ */
+
+#ifndef _SD2CARD_FLASHDRIVE_H_
+#define _SD2CARD_FLASHDRIVE_H_
+
+#include "../SdFatConfig.h"
+#include "../SdInfo.h"
+
+/**
+ * define SOFTWARE_SPI to use bit-bang SPI
+ */
+#if MEGA_SOFT_SPI || USE_SOFTWARE_SPI
+  #define SOFTWARE_SPI
+#endif
+
+// SPI pin definitions - do not edit here - change in SdFatConfig.h
+#if DISABLED(SOFTWARE_SPI)
+  // hardware pin defs
+  #define SD_CHIP_SELECT_PIN  SS_PIN            // The default chip select pin for the SD card is SS.
+  // The following three pins must not be redefined for hardware SPI.
+  #define SPI_MOSI_PIN        MOSI_PIN          // SPI Master Out Slave In pin
+  #define SPI_MISO_PIN        MISO_PIN          // SPI Master In Slave Out pin
+  #define SPI_SCK_PIN         SCK_PIN           // SPI Clock pin
+#else  // SOFTWARE_SPI
+  #define SD_CHIP_SELECT_PIN  SOFT_SPI_CS_PIN   // SPI chip select pin
+  #define SPI_MOSI_PIN        SOFT_SPI_MOSI_PIN // SPI Master Out Slave In pin
+  #define SPI_MISO_PIN        SOFT_SPI_MISO_PIN // SPI Master In Slave Out pin
+  #define SPI_SCK_PIN         SOFT_SPI_SCK_PIN  // SPI Clock pin
+#endif // SOFTWARE_SPI
+
+class Sd2Card {
+  private:
+
+    typedef enum {
+      USB_HOST_DELAY_INIT,
+      USB_HOST_WAITING,
+      USB_HOST_UNINITIALIZED,
+      USB_HOST_INITIALIZED
+    } state_t;
+
+    static state_t  state;
+    static uint32_t block;
+
+    static bool usbHostReady();
+
+  public:
+    static void idle();
+
+    static bool isInserted();
+
+    uint32_t cardSize();
+
+    bool init(uint8_t sckRateID = 0, uint8_t chipSelectPin = SD_CHIP_SELECT_PIN);
+
+    bool readData(uint8_t* dst);
+    bool readStart(uint32_t blockNumber);
+    bool readStop();
+    bool readBlock(uint32_t block, uint8_t* dst);
+
+    bool writeData(const uint8_t* src);
+    bool writeStart(uint32_t blockNumber, uint32_t eraseCount);
+    bool writeStop();
+    bool writeBlock(uint32_t blockNumber, const uint8_t* src);
+};
+
+#endif  // _SD2CARD_FLASHDRIVE_H_