用一个stm32hal库编一个串口接收回调函数
时间: 2023-06-09 16:02:27 浏览: 96
好的,我理解你的问题了。以下是使用STM32 HAL库编写串口接收回调函数的示例代码:
首先,你需要在main函数中初始化串口,例如:
```c
/* 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;
if (HAL_UART_Init(&huart2) != HAL_OK)
{
Error_Handler();
}
}
```
然后,在USART2_IRQHandler函数中配置串口接收回调函数,例如:
```c
/**
* @brief This function handles USART2 global interrupt.
*/
void USART2_IRQHandler(void)
{
/* USER CODE BEGIN USART2_IRQn 0 */
/* USER CODE END USART2_IRQn 0 */
HAL_UART_IRQHandler(&huart2);
/* USER CODE BEGIN USART2_IRQn 1 */
/* USER CODE END USART2_IRQn 1 */
}
/**
* @brief Rx Transfer completed callback.
* @param huart: UART handle.
* @retval None
*/
void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart)
{
/* Prevent unused argument(s) compilation warning */
UNUSED(huart);
/* Do something with the received data */
// Your code here
}
```
在HAL_UART_RxCpltCallback回调函数中,你可以根据需要执行某些操作,例如解析接收到的数据,处理接收到的命令等。
希望这能够帮助你解决问题!
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