Serial port to receive variable length data

Serial port to receive variable length data program (for no idle interrupt SCM), uses a timer to determine whether the receiving end, test procedures send more than 50ms interval will not appear on the stick pack phenomenon STM32F4 explorers, 20ms occasionally stick pack phenomenon .

typedef struct
{
        uint8_t Rec_Flag;
        uint8_t Process;
        uint8_t timeout;/* 单位ms */
        uint8_t Rx_Length;
        uint8_t Tx_Buf[64];
        uint8_t Rx_Buf[64];
}USART_RTx_TypeDef;

extern USART_RTx_TypeDef USART2_RTx;


void USART2_IRQHandler(void)
{
  IF(LL_USART_IsActiveFlag_RXNE(USART2) != RESET)
  {
    USART2_RTx.Rx_Buf[USART2_RTx.Rx_Length++]=USART2->DR;
    switch(USART2_RTx.Process)
    {
      case 0:
        USART2_RTx.Timeout=3;
        USART2_RTx.Process=1;
        LL_TIM_EnableCounter(TIM1);
        break;
      case 1:
        USART2_RTx.Timeout=3;
        break;
      default:
        USART2_RTx.Timeout=0;
        USART2_RTx.Process=0;
        LL_TIM_DisableCounter(TIM1);
        break;
    }
  }
}


void TIM1_UP_TIM10_IRQHandler(void)
{
  /* USER CODE BEGIN TIM1_UP_TIM10_IRQn 0 */
  if(LL_TIM_IsActiveFlag_UPDATE(TIM1) != RESET)
  {
    LL_TIM_CleaRFlag_UPDATE(TIM1);
    USART2_RTx.Timeout--;
    if(USART2_RTx.Timeout == 0)
    {
      USART2_RTx.Rec_Flag=1;/* 接收完成标志 */
      LL_TIM_DisableCounter(TIM1);
      USART2_RTx.Process=0;
    }
  }
}

 

Finally, still provide some information to you, I hope in a way to help everyone

(Stm32 serial application)
http://www.makeru.com.cn/live/1392_1164.html?s=45051

Based on STM32 explain serial operation
http://www.makeru.com.cn/live/1758_490.html?s=45051