基于STM32Cube IDEF427两个串口同时运行的问题
问题遇到的现象和发生背景
想在STM32CubeIDE，的STM32F427VIT6的板子上实验两个串口同时工作，单独设置时没啥问题，但是一起的时候一个串口就不能用。而且，在单独测试的时候 不知道为啥把USART3换成USART1就不行了，调整波特率和优先级也好像没有用，我自己刚开始学习，没有报错也不知道问题在哪里
问题相关代码，请勿粘贴截图
void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)
{
uint8_t pData[]="hello world";
if (htim == (&htim1))
HAL_UART_Transmit(&huart3,(uint8_t*)pData,sizeof(pData),100);
UNUSED(htim);
}
void HAL_UART_RxCpltCallback(UART_HandleTypeDef huart)
{
if(huart == (&huart1))
HAL_UART_Receive_IT(&huart1, Rxbuf,sizeof(Rxbuf));
HAL_UART_Transmit(&huart1,(uint8_t)ACKbuf ,sizeof(ACKbuf),100);
}
可能是你程序对2个串口的初始化问题，要不把初始化也贴出来
static 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 = 9600;
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_RTS_CTS;
huart1.Init.OverSampling = UART_OVERSAMPLING_16;
if (HAL_UART_Init(&huart1) != HAL_OK)
{
Error_Handler();
}
/ USER CODE BEGIN USART1_Init 2 */
/* USER CODE END USART1_Init 2 */
}
/**
/* USER CODE BEGIN USART3_Init 0 */
/* USER CODE END USART3_Init 0 */
/* USER CODE BEGIN USART3_Init 1 */
/* USER CODE END USART3_Init 1 /
huart3.Instance = USART3;
huart3.Init.BaudRate = 115200;
huart3.Init.WordLength = UART_WORDLENGTH_8B;
huart3.Init.StopBits = UART_STOPBITS_1;
huart3.Init.Parity = UART_PARITY_NONE;
huart3.Init.Mode = UART_MODE_TX_RX;
huart3.Init.HwFlowCtl = UART_HWCONTROL_RTS_CTS;
huart3.Init.OverSampling = UART_OVERSAMPLING_16;
if (HAL_UART_Init(&huart3) != HAL_OK)
{
Error_Handler();
}
/ USER CODE BEGIN USART3_Init 2 */
/* USER CODE END USART3_Init 2 */
}
硬件流控使能了，硬件上面有接上了没？
另外要别人帮你看的时候尽量把相关的代码贴全一点，要不然都只能靠猜