Reply to FR802x串口接收超时 on Invalid Date

Mars — Invalid Date
FR802x支持串口超时判断，使用方法是怎么样的？
Reply to FR802x串口接收超时 on Invalid Date

Mars — Invalid Date

# define AT_RECV_MAX_LEN             513
static void app_at_recv_c(uint8_t *rx_buff,uint16_t rx_length)
{
   if((memcmp(at_recv_buffer,"AT#",3)==0)||(memcmp(at_recv_buffer,"AT+",3)==0))
   {
    uint16_t cmd_len=rx_length-3;
    
  struct app_task_event *event;
  event = app_task_event_alloc(APP_TASK_EVENT_AT_CMD, cmd_len, false);
  if(event) {
   memcpy(event->param, &at_recv_buffer[3], cmd_len);
   app_task_event_post(event, false);
  }
    }
   else
   {
  struct app_task_event *event;
  event = app_task_event_alloc(APP_TASK_EVENT_SPEED, at_recv_index, false);
  if(event) {
   memcpy(event->param, at_recv_buffer, at_recv_index);
   app_task_event_post(event, false);
  }
  
   }
   memset(at_recv_buffer,0,AT_RECV_MAX_LEN);
 at_recv_index = 0;
}

extern USART_HandleTypeDef log_usart;
__RAM_CODE void USART2_IRQHandler(void)
{
  if((__USART_GET_INT_STATUS(USART2, USART_INT_RX)) || (__USART_GET_INT_STATUS(USART2, USART_INT_RFTO)))
    {
        if(log_usart.Init.DataLength == USART_DATA_LENGTH_9BIT)
        {
            /*Rx ready */
            while(__USART_GET_SR_STATUS(USART2, USART_STATUS_DR))
            {
                (*(uint16_t*)log_usart.p_RxData) = USART2->DR;

                log_usart.p_RxData += sizeof(uint16_t);
                log_usart.u32_RxCount++;
            }            
        }
        else
        {
            /* Rx ready */        
            while(__USART_GET_SR_STATUS(USART2, USART_STATUS_DR))
            {
                at_recv_buffer[at_recv_index++] = USART2->DR;
                if(at_recv_index>=AT_RECV_MAX_LEN)
    {
     app_at_recv_c(&at_recv_buffer[0],at_recv_index);
    }

            }            
        }

    }/* Receiver Timeout */
    if(__USART_GET_INT_STATUS(USART2, USART_INT_RTO))
    {
        __USART_CLEAN_INT_STATUS(USART2, USART_INT_RTO);
  at_recv_buffer[at_recv_index++] = USART2->DR;
//  for(uint8_t i=0;i