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Marlin/src/sd/usb_flashdrive/Sd2Card_FlashDrive.h

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+/**
+ * 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/>.
+ *
+ */
+#pragma once
+
+/**
+ * \file
+ * \brief Sd2Card class for USB Flash Drive
+ */
+#include "../SdFatConfig.h"
+#include "../SdInfo.h"
+
+#if DISABLED(USE_OTG_USB_HOST)
+  /**
+   * Define SOFTWARE_SPI to use bit-bang SPI
+   */
+  #if EITHER(MEGA_SOFT_SPI, USE_SOFTWARE_SPI)
+    #define SOFTWARE_SPI
+  #endif
+
+  // SPI pin definitions - do not edit here - change in SdFatConfig.h
+  #if ENABLED(SOFTWARE_SPI)
+    #warning "Auto-assigning '10' as the SD_CHIP_SELECT_PIN."
+    #define SD_CHIP_SELECT_PIN  10                // Software SPI chip select pin for the SD
+  #else
+    // hardware pin defs
+    #define SD_CHIP_SELECT_PIN  SD_SS_PIN         // The default chip select pin for the SD card is SS.
+  #endif
+#endif
+
+class Sd2Card {
+  private:
+    uint32_t pos;
+
+    static void usbStateDebug();
+
+  public:
+    static bool usbStartup();
+
+    bool init(const uint8_t sckRateID=0, const pin_t chipSelectPin=TERN(USE_OTG_USB_HOST, 0, SD_CHIP_SELECT_PIN));
+
+    static void idle();
+
+    inline bool readStart(const uint32_t block)                  { pos = block; return isReady(); }
+    inline bool readData(uint8_t* dst)                           { return readBlock(pos++, dst); }
+    inline bool readStop() const                                 { return true; }
+
+    inline bool writeStart(const uint32_t block, const uint32_t) { pos = block; return isReady(); }
+    inline bool writeData(uint8_t* src)                          { return writeBlock(pos++, src); }
+    inline bool writeStop() const                                { return true; }
+
+    bool readBlock(uint32_t block, uint8_t* dst);
+    bool writeBlock(uint32_t blockNumber, const uint8_t* src);
+
+    bool readCSD(csd_t*)                                         { return true; }
+
+    uint32_t cardSize();
+    static bool isInserted();
+    bool isReady();
+};