add mouse external flash example

Author: hathach

examples/Composite/mouse_external_flash/mouse_external_flash.ino

@@ -0,0 +1,130 @@
+// The MIT License (MIT)
+// Copyright (c) 2019 Ha Thach for Adafruit Industries
+
+/* This sketch demonstrates USB Mass Storage and HID mouse (and CDC)
+ * - Enumerated as disk using on-board external flash
+ * - Press button pin will move mouse toward bottom right of monitor
+ */
+
+#include "SPI.h"
+#include "SdFat.h"
+#include "Adafruit_SPIFlash.h"
+#include "Adafruit_TinyUSB.h"
+
+#if defined(__SAMD51__) || defined(NRF52840_XXAA)
+  Adafruit_FlashTransport_QSPI flashTransport(PIN_QSPI_SCK, PIN_QSPI_CS, PIN_QSPI_IO0, PIN_QSPI_IO1, PIN_QSPI_IO2, PIN_QSPI_IO3);
+#else
+  #if (SPI_INTERFACES_COUNT == 1)
+    Adafruit_FlashTransport_SPI flashTransport(SS, &SPI);
+  #else
+    Adafruit_FlashTransport_SPI flashTransport(SS1, &SPI1);
+  #endif
+#endif
+
+Adafruit_SPIFlash flash(&flashTransport);
+
+Adafruit_USBD_MSC usb_msc;
+
+// HID report descriptor using TinyUSB's template
+// Single Report (no ID) descriptor
+uint8_t const desc_hid_report[] =
+{
+  TUD_HID_REPORT_DESC_MOUSE()
+};
+
+Adafruit_USBD_HID usb_hid;
+
+const int pin = 7;
+
+// the setup function runs once when you press reset or power the board
+void setup()
+{
+  flash.begin();
+
+  pinMode(LED_BUILTIN, OUTPUT);
+
+  // Set disk vendor id, product id and revision with string up to 8, 16, 4 characters respectively
+  usb_msc.setID("Adafruit", "External Flash", "1.0");
+
+  // Set callback
+  usb_msc.setReadWriteCallback(msc_read_cb, msc_write_cb, msc_flush_cb);
+
+  // Set disk size, block size should be 512 regardless of spi flash page size
+  usb_msc.setCapacity(flash.pageSize()*flash.numPages()/512, 512);
+
+  // MSC is ready for read/write
+  usb_msc.setUnitReady(true);
+  
+  usb_msc.begin();
+
+
+  // Set up button
+  pinMode(pin, INPUT_PULLUP);
+
+  usb_hid.setReportDescriptor(desc_hid_report, sizeof(desc_hid_report));
+  usb_hid.begin();
+
+  Serial.begin(115200);
+  while ( !Serial ) delay(10);   // wait for native usb
+
+  Serial.println("Adafruit TinyUSB Mouse + Mass Storage (external flash) example");
+}
+
+void loop()
+{
+  // poll gpio once each 10 ms
+  delay(10);
+
+  // button is active low
+  uint32_t const btn = 1 - digitalRead(pin);
+
+  // Remote wakeup
+  if ( tud_suspended() && btn )
+  {
+    // Wake up host if we are in suspend mode
+    // and REMOTE_WAKEUP feature is enabled by host
+    tud_remote_wakeup();
+  }
+
+  /*------------- Mouse -------------*/
+  if ( usb_hid.ready() )
+  {
+    if ( btn )
+    {
+      int8_t const delta = 5;
+      usb_hid.mouseMove(0, delta, delta); // no ID: right + down
+
+      // delay a bit before attempt to send keyboard report
+      delay(10);
+    }
+  }
+}
+
+// Callback invoked when received READ10 command.
+// Copy disk's data to buffer (up to bufsize) and 
+// return number of copied bytes (must be multiple of block size) 
+int32_t msc_read_cb (uint32_t lba, void* buffer, uint32_t bufsize)
+{
+  // Note: SPIFLash Bock API: readBlocks/writeBlocks/syncBlocks
+  // already include 4K sector caching internally. We don't need to cache it, yahhhh!!
+  flash.readBlocks(lba, (uint8_t*) buffer, bufsize/512);
+  return bufsize;
+}
+
+// Callback invoked when received WRITE10 command.
+// Process data in buffer to disk's storage and 
+// return number of written bytes (must be multiple of block size)
+int32_t msc_write_cb (uint32_t lba, uint8_t* buffer, uint32_t bufsize)
+{
+  // Note: SPIFLash Bock API: readBlocks/writeBlocks/syncBlocks
+  // already include 4K sector caching internally. We don't need to cache it, yahhhh!!
+  flash.writeBlocks(lba, buffer, bufsize/512);
+  return bufsize;
+}
+
+// Callback invoked when WRITE10 command is completed (status received and accepted by host).
+// used to flush any pending cache.
+void msc_flush_cb (void)
+{
+  flash.syncBlocks();
+}

examples/Composite/mouse_ramdisk/mouse_ramdisk.ino

@@ -51,7 +51,7 @@ void setup()
   Serial.begin(115200);
   while ( !Serial ) delay(10);   // wait for native usb
 
-  Serial.println("Adafruit TinyUSB Mass Storage RAM Disk example");
+  Serial.println("Adafruit TinyUSB Mouse + Mass Storage (ramdisk) example");
 }
 
 void loop()