HAL_UART_Transmit_IT(&huart1, data, sizeof(data)); while (1) { // 主循环中的其他任务 } } 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;...
HAL_StatusTypeDef HAL_UART_Transmit(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size, uint32_t Timeout) { uint16_t* tmp; uint32_t tickstart = 0U; /* Check that a Tx process is not already ongoing */ /*检查有没有一个发送的处理正在运行*/ /*如果是准备好的状态就判断指针...
2、函数解析 HAL_StatusTypeDefHAL_UART_Transmit_IT(UART_HandleTypeDef*huart,uint8_t*pData,uint16_tSize){/* Check that a Tx process is not already ongoing */if(huart->gState==HAL_UART_STATE_READY){if((pData==NULL)||(Size==0U)){returnHAL_ERROR;}/* Process Locked */__HAL_LOCK(h...
发送数据：使用如HAL_UART_Transmit_IT等函数启动发送中断，数据会自动加载到发送寄存器。发送过程中，中断服务函数会负责处理发送事件，无需主程序持续查询状态。接收数据：通过HAL_UART_Receive_IT函数启动接收中断，并在接收完成回调HAL_UART_RxCpltCallback中处理接收到的数据。中断服务函数同样负责处理接收...
* This parameter can be one of the following values: * USART1, USART2, USART3, UART4 or UART5. * @param Data: the data to transmit. * @retval None */ void USART_SendData(USART_TypeDef* USARTx, uint16_t Data) { /* Check the parameters */ assert_param(IS_USART_ALL_PERIPH(US...
void HAL_UART_RxCpltCallback(UART_HandleTypeDef *UartHandle){ uint8_t temp[] = {"\r\nin Callback\r\n"}; HAL_UART_Transmit_DMA(&huart2,temp,sizeof(temp)-1);//可以通过DMA把数据发出去 HAL_UART_Receive_DMA(&huart2, (uint8_t *)rxData, sizeof(rxData)-1); //重新使能接收 } ...
Combine UART + DMA for data transmission Everything gets simplier when application transmits data, length of data is known in advance and memory to transmit is ready. For the sake of this example, we use memory forHelloworldmessage. InC languageit would be: ...
{ /* Place your implementation of fputc here */ /* e.g. write a character to the EVAL_COM1 and Loop until the end of transmission */ HAL_UART_Transmit(&huart1, (uint8_t *)&ch, 1, 0xFFFF); return ch; } /* USER CODE END PD */ /* Private macro ---*/ /* USER CODE BE...
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_NONE; ...
发送函数：HAL_UART_Transmit_DMA，用于通过DMA方式发送数据。接收函数：HAL_UART_Receive_DMA，用于通过DMA方式接收数据。中断与回调：数据传输完成后触发DMA中断，调用回调函数处理后续操作。获取未传输数据量：使用__HAL_DMA_GET_COUNTER函数。关闭数据流：使用__HAL_DMA_DISABLE函数。实战应用：不定长...