add windows driver for cdc

add simple echo cdc serial demo
add cdc device send/receive API
refractor descriptor
refractor cdc.h
add usbd driver function
- init
- bus_reset

demos/device/device_os_none/cdcd_app.c

@@ -0,0 +1,138 @@
+/**************************************************************************/
+/*!
+    @file     cdcd_app.c
+    @author   hathach (tinyusb.org)
+
+    @section LICENSE
+
+    Software License Agreement (BSD License)
+
+    Copyright (c) 2013, hathach (tinyusb.org)
+    All rights reserved.
+
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions are met:
+    1. Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+    2. Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions and the following disclaimer in the
+    documentation and/or other materials provided with the distribution.
+    3. Neither the name of the copyright holders nor the
+    names of its contributors may be used to endorse or promote products
+    derived from this software without specific prior written permission.
+
+    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY
+    EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+    WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+    DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE FOR ANY
+    DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+    (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+    LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+    ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+    (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+    SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+    This file is part of the tinyusb stack.
+*/
+/**************************************************************************/
+
+#include "cdcd_app.h"
+
+#if TUSB_CFG_DEVICE_CDC
+//--------------------------------------------------------------------+
+// INCLUDE
+//--------------------------------------------------------------------+
+enum {
+  CDCD_APP_BUFFER_SIZE = 16
+};
+
+//--------------------------------------------------------------------+
+// MACRO CONSTANT TYPEDEF
+//--------------------------------------------------------------------+
+OSAL_TASK_DEF(cdcd_serial_app_task, 128, CDCD_SERIAL_APP_TASK_PRIO);
+OSAL_SEM_DEF(cdcd_semaphore);
+
+static osal_semaphore_handle_t sem_hdl;
+
+static uint8_t cdcd_app_recv_buffer[CDCD_APP_BUFFER_SIZE] TUSB_CFG_ATTR_USBRAM;
+static uint8_t cdcd_app_send_buffer[CDCD_APP_BUFFER_SIZE] TUSB_CFG_ATTR_USBRAM;
+
+static uint16_t received_bytes; // set by transfer complete callback
+
+//--------------------------------------------------------------------+
+// INTERNAL OBJECT & FUNCTION DECLARATION
+//--------------------------------------------------------------------+
+
+//--------------------------------------------------------------------+
+// IMPLEMENTATION
+//--------------------------------------------------------------------+
+void cdcd_serial_app_init(void)
+{
+  sem_hdl = osal_semaphore_create( OSAL_SEM_REF(cdcd_semaphore) );
+  ASSERT_PTR( sem_hdl, VOID_RETURN);
+
+  ASSERT( TUSB_ERROR_NONE == osal_task_create( OSAL_TASK_REF(cdcd_serial_app_task) ), VOID_RETURN);
+}
+
+void tusbd_cdc_mounted_cb(uint8_t coreid)
+{
+  osal_semaphore_reset(sem_hdl);
+
+  received_bytes = 0;
+  tusbd_cdc_receive(coreid, cdcd_app_recv_buffer, CDCD_APP_BUFFER_SIZE, true);
+}
+
+void tusbd_cdc_xfer_isr(uint8_t coreid, tusb_event_t event, cdc_pipeid_t pipe_id, uint32_t xferred_bytes)
+{
+  switch ( pipe_id )
+  {
+    case CDC_PIPE_DATA_OUT:
+      switch(event)
+      {
+        case TUSB_EVENT_XFER_COMPLETE:
+          received_bytes = min16_of(xferred_bytes, CDCD_APP_BUFFER_SIZE); // discard overflow bytes
+          osal_semaphore_post(sem_hdl);  // notify main task
+          break;
+
+        case TUSB_EVENT_XFER_ERROR:
+          xferred_bytes = 0; // ignore
+        break;
+
+        case TUSB_EVENT_XFER_STALLED:
+        default :
+          ASSERT(false, VOID_RETURN);
+          break;
+      }
+    break;
+
+    case CDC_PIPE_DATA_IN:
+    case CDC_PIPE_NOTIFICATION:
+    default:
+    break;
+  }
+}
+
+OSAL_TASK_FUNCTION( cdcd_serial_app_task ) (void* p_task_para)
+{
+  tusb_error_t error;
+
+  OSAL_TASK_LOOP_BEGIN
+
+  osal_semaphore_wait(sem_hdl, OSAL_TIMEOUT_WAIT_FOREVER, &error);
+
+  if ( tusbd_cdc_is_configured(0) )
+  {
+    if ( received_bytes )
+    { // echo back
+      memcpy(cdcd_app_send_buffer, cdcd_app_recv_buffer, received_bytes);
+      tusbd_cdc_send(0, cdcd_app_send_buffer, received_bytes, false);
+      received_bytes = 0;
+    }
+
+    tusbd_cdc_receive(0, cdcd_app_recv_buffer, CDCD_APP_BUFFER_SIZE, true);
+  }
+
+  OSAL_TASK_LOOP_END
+}
+
+#endif