1 files changed, 58 insertions, 0 deletions
diff --git a/Marlin/src/sd/usb_flashdrive/lib-uhs2/usbhost.h b/Marlin/src/sd/usb_flashdrive/lib-uhs2/usbhost.h
new file mode 100644
index 0000000..5c3b852
--- /dev/null
+++ b/Marlin/src/sd/usb_flashdrive/lib-uhs2/usbhost.h
@@ -0,0 +1,58 @@
+/**************
+ * usb_host.h *
+ **************/
+
+/****************************************************************************
+ *   Written By Marcio Teixeira 2018 - Aleph Objects, Inc.                  *
+ *                                                                          *
+ *   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.                           *
+ *                                                                          *
+ *   To view a copy of the GNU General Public License, go to the following  *
+ *   location: <https://www.gnu.org/licenses/>.                             *
+ ****************************************************************************/
+
+#pragma once
+
+/* This the following comes from "lib/usbhost.h", but has been rewritten
+ * to use the SPI functions from Marlin's HAL */
+
+class MAX3421e {
+  private:
+    static uint8_t vbusState;
+    void cs();
+    void ncs();
+
+    uint8_t GpxHandler();
+    uint8_t IntHandler();
+
+  public:
+    bool      start();
+
+    void      regWr(uint8_t reg, uint8_t data);
+    uint8_t*  bytesWr(uint8_t reg, uint8_t nbytes, uint8_t* data_p);
+    void      gpioWr(uint8_t data);
+    uint8_t   regRd(uint8_t reg);
+    uint8_t*  bytesRd(uint8_t reg, uint8_t nbytes, uint8_t* data_p);
+    uint8_t   gpioRd();
+    bool      reset();
+
+    uint8_t   getVbusState()   {return vbusState;};
+
+    void busprobe();
+
+    uint8_t Task();
+};
+
+#define USE_MARLIN_MAX3421E
+
+#if defined(__SAM3X8E__) && !defined(ARDUINO_SAM_DUE)
+  #define ARDUINO_SAM_DUE // Spoof the USB library that this is a DUE
+#endif