rename to cdc_msc_freertos

1 files changed, 198 insertions, 0 deletions

diff --git a/examples/device/cdc_msc_freertos/src/main.c b/examples/device/cdc_msc_freertos/src/main.c
new file mode 100644
index 000000000..b3205fc45
--- /dev/null
+++ b/examples/device/cdc_msc_freertos/src/main.c
@@ -0,0 +1,198 @@
+/* 
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2019 Ha Thach (tinyusb.org)
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "FreeRTOS.h"
+#include "task.h"
+#include "timers.h"
+#include "queue.h"
+#include "semphr.h"
+
+#include "bsp/board.h"
+#include "tusb.h"
+
+//--------------------------------------------------------------------+
+// MACRO CONSTANT TYPEDEF PROTYPES
+//--------------------------------------------------------------------+
+
+/* Blink pattern
+ * - 250 ms  : device not mounted
+ * - 1000 ms : device mounted
+ * - 2500 ms : device is suspended
+ */
+enum  {
+  BLINK_NOT_MOUNTED = 250,
+  BLINK_MOUNTED = 1000,
+  BLINK_SUSPENDED = 2500,
+};
+
+TimerHandle_t blink_tm;
+
+void led_blinky_cb(TimerHandle_t xTimer);
+void usb_device_task(void* param);
+void cdc_task(void* params);
+
+/*------------- MAIN -------------*/
+int main(void)
+{
+  board_init();
+
+  // soft timer for blinky
+  blink_tm = xTimerCreate(NULL, pdMS_TO_TICKS(BLINK_NOT_MOUNTED), true, NULL, led_blinky_cb);
+  xTimerStart(blink_tm, 0);
+
+  tusb_init();
+
+  // Create a task for tinyusb device stack
+  xTaskCreate( usb_device_task, "usbd", 150, NULL, configMAX_PRIORITIES-1, NULL);
+
+  // Create task
+#if CFG_TUD_CDC
+  xTaskCreate( cdc_task, "cdc", 128, NULL, configMAX_PRIORITIES-2, NULL);
+#endif
+
+  vTaskStartScheduler();
+  NVIC_SystemReset();
+
+  return 0;
+}
+
+// USB Device Driver task
+// This top level thread process all usb events and invoke callbacks
+void usb_device_task(void* param)
+{
+  (void) param;
+
+  // RTOS forever loop
+  while (1)
+  {
+    // tinyusb device task
+    tud_task();
+  }
+}
+
+//--------------------------------------------------------------------+
+// Device callbacks
+//--------------------------------------------------------------------+
+
+// Invoked when device is mounted
+void tud_mount_cb(void)
+{
+  xTimerChangePeriod(blink_tm, pdMS_TO_TICKS(BLINK_MOUNTED), 0);
+}
+
+// Invoked when device is unmounted
+void tud_umount_cb(void)
+{
+  xTimerChangePeriod(blink_tm, pdMS_TO_TICKS(BLINK_NOT_MOUNTED), 0);
+}
+
+// Invoked when usb bus is suspended
+// remote_wakeup_en : if host allow us  to perform remote wakeup
+// Within 7ms, device must draw an average of current less than 2.5 mA from bus
+void tud_suspend_cb(bool remote_wakeup_en)
+{
+  (void) remote_wakeup_en;
+  xTimerChangePeriod(blink_tm, pdMS_TO_TICKS(BLINK_SUSPENDED), 0);
+}
+
+// Invoked when usb bus is resumed
+void tud_resume_cb(void)
+{
+  xTimerChangePeriod(blink_tm, pdMS_TO_TICKS(BLINK_MOUNTED), 0);
+}
+
+
+//--------------------------------------------------------------------+
+// USB CDC
+//--------------------------------------------------------------------+
+#if CFG_TUD_CDC
+void cdc_task(void* params)
+{
+  (void) params;
+
+  // RTOS forever loop
+  while ( 1 )
+  {
+    if ( tud_cdc_connected() )
+    {
+      // connected and there are data available
+      if ( tud_cdc_available() )
+      {
+        uint8_t buf[64];
+
+        // read and echo back
+        uint32_t count = tud_cdc_read(buf, sizeof(buf));
+
+        for(uint32_t i=0; i<count; i++)
+        {
+          tud_cdc_write_char(buf[i]);
+
+          if ( buf[i] == '\r' ) tud_cdc_write_char('\n');
+        }
+
+        tud_cdc_write_flush();
+      }
+    }
+
+    taskYIELD();
+  }
+}
+
+// Invoked when cdc when line state changed e.g connected/disconnected
+void tud_cdc_line_state_cb(uint8_t itf, bool dtr, bool rts)
+{
+  (void) itf;
+
+  // connected
+  if ( dtr && rts )
+  {
+    // print initial message when connected
+    tud_cdc_write_str("\r\nTinyUSB CDC MSC HID device with FreeRTOS example\r\n");
+  }
+}
+
+// Invoked when CDC interface received data from host
+void tud_cdc_rx_cb(uint8_t itf)
+{
+  (void) itf;
+}
+
+#endif // CFG_TUD_CDC
+
+//--------------------------------------------------------------------+
+// BLINKING TASK
+//--------------------------------------------------------------------+
+void led_blinky_cb(TimerHandle_t xTimer)
+{
+  (void) xTimer;
+  static bool led_state = false;
+
+  board_led_write(led_state);
+  led_state = 1 - led_state; // toggle
+}