USBB interfacing of at32u3cb512 issue.

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void device_template_task(void)
#endif
{
  static U8 buf[EP_SIZE_TEMP2];
 
#ifdef FREERTOS_USED
  portTickType xLastWakeTime;
 
  xLastWakeTime = xTaskGetTickCount();
  while (true)
  {
    vTaskDelayUntil(&xLastWakeTime, configTSK_USB_DTP_PERIOD);
 
    // First, check the device enumeration state
    if (!Is_device_enumerated()) continue;
#else
    // First, check the device enumeration state
    if (!Is_device_enumerated()) return;
#endif  // FREERTOS_USED
 
    // HERE STARTS THE USB DEVICE APPLICATIVE CODE
    // The example below just performs a loopback transmission/reception.
    // All data received with the OUT endpoint is stored in a RAM buffer and
    // sent back to the IN endpoint.
 
#if BOARD == EVK1100
    // For example, display Start-of-Frame counter on LEDs
    LED_Display_Field(LED_MONO0_GREEN |
                      LED_MONO1_GREEN |
                      LED_MONO2_GREEN |
                      LED_MONO3_GREEN,
                      sof_cnt >> 5);
#elif BOARD == EVK1101 || BOARD == UC3C_EK || BOARD == EVK1104 || BOARD == EVK1105
    // For example, display Start-of-Frame counter on LEDs
    LED_Display_Field(LED0 |
                      LED1,
                      sof_cnt >> 5);
#else
  #error The display of the SOFs must be defined here.
#endif
 
    // If we receive something in the OUT endpoint, just store it in the RAM buffer
    if (Is_usb_out_received(EP_TEMP_OUT))
    {
      LED_On(LED_APPLI_1);
      Usb_reset_endpoint_fifo_access(EP_TEMP_OUT);
      data_length = Usb_byte_count(EP_TEMP_OUT);
      usb_read_ep_rxpacket(EP_TEMP_OUT, buf, data_length, NULL);
      Usb_ack_out_received_free(EP_TEMP_OUT);
      LED_Off(LED_APPLI_1);
    }
 
    // Load the IN endpoint with the contents of the RAM buffer
    if (data_length && Is_usb_in_ready(EP_TEMP_IN))
    {
      LED_On(LED_APPLI_0);
      Usb_reset_endpoint_fifo_access(EP_TEMP_IN);
      usb_write_ep_txpacket(EP_TEMP_IN, buf, data_length, NULL);
      data_length = 0;
      Usb_ack_in_ready_send(EP_TEMP_IN);
      LED_Off(LED_APPLI_0);
    }
#ifdef FREERTOS_USED
  }
#endif
}