求助：STM32CubeIDE UART1 串口中断接收异常

jjjoee · 发表于 2021-6-25 10:06:24

STM32CubeIDE UART1 串口中断接收异常，我打开USART1，printf重定向没有问题，但是在使用串口中断时就出现异常，我把代码改成如下，中断只能接收到前两个字符，修改Rx的GPIO的设置一直没有解决

/* Includes ------------------------------------------------------------------*/
#include "usart.h"

/* USER CODE BEGIN 0 */
#include "stdio.h"

u8 aRxBuffer[RXBUFFERSIZE];
uint8_t rx_len = 0;
uint8_t rec_end_flag = 0;

// 重定向print start
int __io_putchar(int ch)
{
//具体哪个串口可以更改USART1为其它串口
while ((USART1->ISR & 0X40) == 0); //循环发送,直到发送完毕
USART1->TDR = (uint8_t) ch;
return ch;
}

//_write函數在syscalls.c中，使用__weak定義，所以可以直接在其他文件中定義_write函數
__attribute__((weak)) int _write(int file, char *ptr, int len)
{
int DataIdx;
for (DataIdx = 0; DataIdx < len; DataIdx++)
{
__io_putchar(*ptr++);
}
return len;
}
/* USER CODE END 0 */

UART_HandleTypeDef huart1;

/* USART1 init function */

void MX_USART1_UART_Init(void)
{

  /* USER CODE BEGIN USART1_Init 0 */

  /* USER CODE END USART1_Init 0 */

  /* USER CODE BEGIN USART1_Init 1 */

  /* USER CODE END USART1_Init 1 */
  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;
  huart1.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE;
  huart1.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
  if (HAL_UART_Init(&huart1) != HAL_OK)
  {
Error_Handler();
  }
  /* USER CODE BEGIN USART1_Init 2 */
HAL_UART_Receive_IT(&huart1, (u8 *)aRxBuffer, RXBUFFERSIZE);
  //enable idle interrupt,open DMA receive
  //__HAL_UART_ENABLE_IT(&huart1,UART_IT_IDLE);
  //HAL_UART_Receive_DMA(&huart1, (u8 *)aRxBuffer, RXBUFFERSIZE);
  //HAL_UART_Receive_IT(&huart1, (u8 *)aRxBuffer, RXBUFFERSIZE);
  /* USER CODE END USART1_Init 2 */

}

void HAL_UART_MspInit(UART_HandleTypeDef* uartHandle)
{

  GPIO_InitTypeDef GPIO_InitStruct = {0};
  if(uartHandle->Instance==USART1)
  {
  /* USER CODE BEGIN USART1_MspInit 0 */

  /* USER CODE END USART1_MspInit 0 */
/* USART1 clock enable */
__HAL_RCC_USART1_CLK_ENABLE();

__HAL_RCC_GPIOA_CLK_ENABLE();
/**USART1 GPIO Configuration
PA9    ------> USART1_TX
PA10    ------> USART1_RX
*/
GPIO_InitStruct.Pin = GPIO_PIN_9|GPIO_PIN_10;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF7_USART1;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

/* USART1 interrupt Init */
HAL_NVIC_SetPriority(USART1_IRQn, 5, 0);
HAL_NVIC_EnableIRQ(USART1_IRQn);
  /* USER CODE BEGIN USART1_MspInit 1 */

  /* USER CODE END USART1_MspInit 1 */
  }
}

void HAL_UART_MspDeInit(UART_HandleTypeDef* uartHandle)
{

  if(uartHandle->Instance==USART1)
  {
  /* USER CODE BEGIN USART1_MspDeInit 0 */

  /* USER CODE END USART1_MspDeInit 0 */
/* Peripheral clock disable */
__HAL_RCC_USART1_CLK_DISABLE();

/**USART1 GPIO Configuration
PA9    ------> USART1_TX
PA10    ------> USART1_RX
*/
HAL_GPIO_DeInit(GPIOA, GPIO_PIN_9|GPIO_PIN_10);

/* USART1 interrupt Deinit */
HAL_NVIC_DisableIRQ(USART1_IRQn);
  /* USER CODE BEGIN USART1_MspDeInit 1 */

  /* USER CODE END USART1_MspDeInit 1 */
  }
}

/* USER CODE BEGIN 1 */
void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart)
{
if(huart->Instance==USART1)
{
printf("data = %s\r\n",aRxBuffer);
while(HAL_UART_GetState(&huart1)!=HAL_UART_STATE_READY);
while(HAL_UART_Receive_IT(&huart1,(u8 *)aRxBuffer, RXBUFFERSIZE)!=HAL_OK);

}
}
/* USER CODE END 1 */

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/