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标题: 请问如何配置UART1的RX接收中断 [打印本页]

作者: john 时间: 2022-1-5 17:01
标题: 请问如何配置UART1的RX接收中断
修改如下的方法，通过串口终端发送的消息始终到不了接收中断，请问下是需要什么额外的配置，感谢！

#define REC_LENGTH  1
extern uint8_t rDataBuffer[REC_LENGTH];
static void MX_USART1_UART_Init(void)
{
huart1.Instance = USART1;
huart1.Init.BaudRate = 115200;
huart1.Init.WordLength = UART_WORDLENGTH_8B;
huart1.Init.StopBits = UART_STOPBITS_1;
huart1.Init.Parity = UART_PARITY_NONE;
huart1.Init.Mode = UART_MODE_TX_RX;
huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE;
huart1.Init.OverSampling = UART_OVERSAMPLING_16;
if (HAL_UART_Init(&huart1) != HAL_OK)
{
      _Error_Handler(__FILE__, __LINE__);
}

/* enable usart1 irq interrupt init*/
//HAL_NVIC_SetPriority(USART1_IRQn, 4, 0);
//HAL_NVIC_EnableIRQ(USART1_IRQn);
#if 1
//enable uart interrupt
if (HAL_OK ==  HAL_UART_Receive_IT(&huart1,(uint8_t *)rDataBuffer,REC_LENGTH)){

printf("uart interrupt receive success.\n");
}
#endif//
printf("/******************************************************************/\n");
printf("/********More Information Please Visit Our Website*************/\n");
printf("/************************www.51uwb.cn**************************/\n");
printf("/*********************FM Version F4-V1.0************************/\n");
printf("/******************************************************************/\n");

}

然后在HAL_UART_RxCpltCallback的中断方法里面使用rDataBuffer ,但是这个中断就没有进来，很奇怪，请教下是什么原因，非常感谢！

uint8_t rDataBuffer[1];  //  RX Data buffer
void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart)
{
uint8_t rDataCount = 0;  //  count Data bytes
uint8_t rDataFlag = 0;  //  waitting complete RX date having been send
  /* Prevent unused argument(s) compilation warning */
  UNUSED(huart);
  /* NOTE: This function should not be modified, when the callback is needed,
         the HAL_UART_RxCpltCallback could be implemented in the user file
*/
  //while(HAL_UART_Receive_IT(huart, rDataBuffer, 1) != HAL_OK); // Wait completly receive 1 byte data, and put data in rDataBuffer

printf("%c", rDataBuffer[0]);

HAL_UART_Receive_IT(huart, rDataBuffer, 1);
}

作者: john 时间: 2022-1-5 17:10
补充下，使用的是TWR-400的模块

作者: john 时间: 2022-1-11 15:54
初始化：
//enable uart interrupt
if (HAL_OK ==  HAL_UART_Receive_IT(&huart1,(uint8_t *)rDataBuffer,REC_LENGTH)){

printf("uart interrupt receive success.\n");
}
/* enable usart1 irq interrupt init*/
HAL_NVIC_EnableIRQ(USART1_IRQn);
HAL_NVIC_SetPriority(USART1_IRQn, 0, 0);

中断处理函数
uint8_t rDataBuffer[1];  //  RX Data buffer
void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart)
{
if(huart->Instance==USART1)//如果是串口1
{
printf("%c", rDataBuffer[0]);
}
}
#if 1
void USART1_IRQHandler(void)
{
HAL_UART_IRQHandler(&huart1); //调用HAL库中断处理公用函数

  while (HAL_UART_GetState(&huart1) != HAL_UART_STATE_READY);//等待就绪

//一次处理完成之后，重新开启中断并设置RxXferCount为1
while(HAL_UART_Receive_IT(&huart1, (uint8 *)rDataBuffer, 1) != HAL_OK);
}

作者: 赵汝杰 时间: 2022-3-14 00:09

john 发表于 2022-1-11 15:54
初始化：
//enable uart interrupt
if (HAL_OK == HAL_UART_Receive_IT(&huart1,(uint8_t *)rDataBu ...

解决了吗哥

作者: 兔子 时间: 2022-4-18 00:18
同问啊同问啊

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