/**
  * @brief  Manage the CDC class requests
  * @param  cmd: Command code
  * @param  pbuf: Buffer containing command data (request parameters)
  * @param  length: Number of data to be sent (in bytes)
  * @retval Result of the operation: USBD_OK if all operations are OK else USBD_FAIL
  */
static int8_t CDC_Control_FS(uint8_t cmd, uint8_t* pbuf, uint16_t length)
{
  /* USER CODE BEGIN 10 */
    USBD_CDC_LineCodingTypeDef linecoding = {
            9600, /* baud rate*/
            0x00,   /* stop bits-1*/
            0x00,   /* parity - none*/
            0x08    /* nb. of bits 8*/
    };

    switch (cmd) {
    case CDC_SET_LINE_CODING:
        linecoding.bitrate = (uint32_t) (pbuf[0] | (pbuf[1] << 8)
                | (pbuf[2] << 16) | (pbuf[3] << 24));
        linecoding.format = pbuf[4];
        linecoding.paritytype = pbuf[5];
        linecoding.datatype = pbuf[6];
        break;

    case CDC_GET_LINE_CODING:
        pbuf[0] = (uint8_t) (linecoding.bitrate);
        pbuf[1] = (uint8_t) (linecoding.bitrate >> 8);
        pbuf[2] = (uint8_t) (linecoding.bitrate >> 16);
        pbuf[3] = (uint8_t) (linecoding.bitrate >> 24);
        pbuf[4] = linecoding.format;
        pbuf[5] = linecoding.paritytype;
        pbuf[6] = linecoding.datatype;
        break;

    /* case CDC_SEND_ENCAPSULATED_COMMAND:
    case CDC_GET_ENCAPSULATED_RESPONSE:
    case CDC_SET_COMM_FEATURE:
    case CDC_GET_COMM_FEATURE:
    case CDC_CLEAR_COMM_FEATURE:
    case CDC_SET_CONTROL_LINE_STATE:
    case CDC_SEND_BREAK: */
    default:
        break;
    }

    return (USBD_OK);
  /* USER CODE END 10 */
}