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STM32G070RB nucleo-64通过STM32CubeMX生成的串口程序无法接收数据怎么解决?

元旦放假在家得到一块Nucleo-64 STM32G070RBT的开发板通过STM32CubeMX 生成的串口 无法接收数据,发送数据不会进入中断,发送数据正常
/* Includes ------------------------------------------------------------------*/
#include "usart.h"

/* USER CODE BEGIN 0 */
#include "string.h"
uint8_t pData[256] = {0};

/* USER CODE END 0 */

UART_HandleTypeDef huart2;

/* USART2 init function */

void MX_USART2_UART_Init(void)
{

  huart2.Instance = USART2;
  huart2.Init.BaudRate = 115200;
  huart2.Init.WordLength = UART_WORDLENGTH_8B;
  huart2.Init.StopBits = UART_STOPBITS_1;
  huart2.Init.Parity = UART_PARITY_NONE;
  huart2.Init.Mode = UART_MODE_TX_RX;
  huart2.Init.HwFlowCtl = UART_HWCONTROL_NONE;
  huart2.Init.OverSampling = UART_OVERSAMPLING_16;
  huart2.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE;
  huart2.Init.ClockPrescaler = UART_PRESCALER_DIV1;
  huart2.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
  if (HAL_UART_Init( huart2) != HAL_OK)
  {
    Error_Handler();
  }
  if (HAL_UARTEx_SetTxFifoThreshold( huart2, UART_TXFIFO_THRESHOLD_1_8) != HAL_OK)
  {
    Error_Handler();
  }
  if (HAL_UARTEx_SetRxFifoThreshold( huart2, UART_RXFIFO_THRESHOLD_1_8) != HAL_OK)
  {
    Error_Handler();
  }
  if (HAL_UARTEx_DisableFifoMode( huart2) != HAL_OK)
  {
    Error_Handler();
  }

}

void HAL_UART_MspInit(UART_HandleTypeDef* uartHandle)
{

  GPIO_InitTypeDef GPIO_InitStruct = {0};
  if(uartHandle->Instance==USART2)
  {
  /* USER CODE BEGIN USART2_MspInit 0 */

  /* USER CODE END USART2_MspInit 0 */
    /* USART2 clock enable */
    __HAL_RCC_USART2_CLK_ENABLE();

    __HAL_RCC_GPIOA_CLK_ENABLE();
    /**USART2 GPIO Configuration
    PA2     ------> USART2_TX
    PA3     ------> USART2_RX
    */
    GPIO_InitStruct.Pin = GPIO_PIN_2|GPIO_PIN_3;
    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
    GPIO_InitStruct.Alternate = GPIO_AF1_USART2;
    HAL_GPIO_Init(GPIOA,  GPIO_InitStruct);

    /* USART2 interrupt Init */
    HAL_NVIC_SetPriority(USART2_IRQn, 2, 0);
    HAL_NVIC_EnableIRQ(USART2_IRQn);
  /* USER CODE BEGIN USART2_MspInit 1 */
        
    //HAL_UART_Transmit_IT( huart2, pdata, sizeof(pdata));
  /* USER CODE END USART2_MspInit 1 */
  }
}

void HAL_UART_MspDeInit(UART_HandleTypeDef* uartHandle)
{

  if(uartHandle->Instance==USART2)
  {
  /* USER CODE BEGIN USART2_MspDeInit 0 */

  /* USER CODE END USART2_MspDeInit 0 */
    /* Peripheral clock disable */
    __HAL_RCC_USART2_CLK_DISABLE();

    /**USART2 GPIO Configuration
    PA2     ------> USART2_TX
    PA3     ------> USART2_RX
    */
    HAL_GPIO_DeInit(GPIOA, GPIO_PIN_2|GPIO_PIN_3);

    /* USART2 interrupt Deinit */
    HAL_NVIC_DisableIRQ(USART2_IRQn);
  /* USER CODE BEGIN USART2_MspDeInit 1 */

  /* USER CODE END USART2_MspDeInit 1 */
  }
}

/* USER CODE BEGIN 1 */
int fputc(int ch,FILE *f)
{
    HAL_UART_Transmit( huart2, (uint8_t*) ch, 1, 1000);
    return ch;
}
void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart)
{
   

    if(huart->Instance == USART2)    // 判断是由哪个串口触发的中断
    {
        //HAL_UART_Transmit( huart3,aRxBuffer1,1,100);    // 接收到数据马上使用串口1发送出去
        HAL_UART_Receive_IT( huart2,pData,1);        // 重新使能串口1接收中断
        HAL_UART_Transmit( huart2, pData, 1, 1000);
        
    }
   

}


void HAL_UART_Enable(void)
{
   
    memset(pData,0,sizeof(pData));
    HAL_UART_Receive_IT( huart2, pData, 1);
    //snprintf((char *)pData,sizeof(pData),"%s enable:%drn",__func__,2);
    //HAL_UART_Transmit( huart2, (char *) pData[0], strlen(pData), 1000);


}


回帖(1)

陈勇

2024-4-9 18:04:04
p;huart2.Init.BaudRate = 9600;
  huart2.Init.WordLength = UART_WORDLENGTH_8B;
  huart2.Init.StopBits = UART_STOPBITS_1;
  huart2.Init.Parity = UART_PARITY_NONE;
  huart2.Init.Mode = UART_MODE_TX_RX;
  huart2.Init.HwFlowCtl = UART_HWCONTROL_NONE;
  huart2.Init.OverSampling = UART_OVERSAMPLING_16;
  huart2.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE;
  huart2.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
  if (HAL_UART_Init(&huart2) != HAL_OK)
  {
    Error_Handler();
  }
}
(中间省略部分代码)

/* USER CODE BEGIN 2 */
void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart)
{
  if (huart == &huart2)
  {
    strcat((char *)pData, (char *)rxData); // concatenate received data to pData
    HAL_UART_Receive_IT(&huart2, (uint8_t *)rxData, 1);  // continue to receive data
  }
}

void HAL_UART_ErrorCallback(UART_HandleTypeDef *huart)
{
  if (huart == &huart2)
  {
    memset((char *)pData, '', sizeof(pData)); // clear pData
    HAL_UART_Receive_IT(&huart2, (uint8_t *)rxData, 1);  // continue to receive data
  }
}
/* USER CODE END 2 */

int main(void)
{
  /* USER CODE BEGIN 1 */
  HAL_UART_Receive_IT(&huart2, (uint8_t *)rxData, 1);  // start receiving data
  /* USER CODE END 1 */

  /* MCU Configuration--------------------------------------------------------*/

  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
  HAL_Init();

  /* USER CODE BEGIN Init */

  /* USER CODE END Init */

  /* Configure the system clock */
  SystemClock_Config();

  /* USER CODE BEGIN SysInit */

  /* USER CODE END SysInit */

  /* Initialize all configured peripherals */
  MX_GPIO_Init();
  MX_USART2_UART_Init();
  /* USER CODE BEGIN 2 */

  /* USER CODE END 2 */

  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {
    /* USER CODE END WHILE */

    /* USER CODE BEGIN 3 */
  }
  /* USER CODE END 3 */
}
以上是一个简单的串口接收程序,使用了中断方式接收串口数据。在主函数中,通过调用HAL_UART_Receive_IT()启动了串口接收中断。接收到数据后,通过HAL_UART_RxCpltCallback()回调函数将接收到的数据连接到pData数组中,并继续接收下一个字节的数据。如果发生错误,通过HAL_UART_ErrorCallback()回调函数清空pData数组,并继续接收下一个字节的数据。

如果你的程序无法接收数据,可能是以下原因导致的:

1. 检查引脚连接:确保你将串口接收引脚连接到正确的GPIO引脚。

2. 检查中断使能:确保你已经在CubeMX中将串口接收中断使能。

3. 检查总线时钟:确保你正确配置了系统时钟,并在MX_USART2_UART_Init()函数中设置了正确的波特率。

4. 检查串口配置:确保你正确配置了STM32CubeMX生成的代码中的串口参数。

5. 检查回调函数:确保你正确实现了HAL_UART_RxCpltCallback()和HAL_UART_ErrorCallback()回调函数,并在主函数中调用了HAL_UART_Receive_IT()。

如果以上方法无法解决问题,建议你仔细查看HAL库相关文件和学习使用HAL库的方法,以便更好地理解和调试问题。
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