给你一个参考，一个空闲中断，一个事件型任务 /* USART6 串口空闲中断函数 */ void HeaterComm_Callback(void) { uint32_t TmpFlag = 0; uint32_t TmpLength; TmpFlag = __HAL_UART_GET_FLAG(&huart6, UART_FLAG_IDLE); if((TmpFlag != RESET)) { __HAL_UART_CLEAR_IDLEFLAG(&huart6); //HAL_UART_AbortReceive_IT(&huart6); HAL_UART_DMAStop(&huart6); TmpLength = __HAL_DMA_GET_COUNTER((DMA_HandleTypeDef *)&hdma_usart6_rx); //TmpLength = hdma_usart6_rx.Instance->NDTR; HeaterComm.DataLength = 32 - TmpLength; osSignalSet (HeaterComm_TaskHandle, 1); //HeaterComm.ReceiveFlag = 1; } } /* HeaterCommTask function */ void HeaterCommTask(void const * argument) { /* USER CODE BEGIN HeaterCommTask */ osEvent Event; HeaterComm.CommStatus = 1; HeadData.Sensor.TcTemp[0].Status = Normal; HeadData.Sensor.TcTemp[1].Status = Normal; HeadData.Sensor.TcTemp[2].Status = Normal; HeadData.Sensor.TcTemp[0].Value = 25; HeadData.Sensor.TcTemp[1].Value = 25; HeadData.Sensor.TcTemp[2].Value = 25; __HAL_UART_ENABLE_IT(&huart6, UART_IT_IDLE); HAL_UART_Receive_DMA(&huart6, Rs422RxData.Char, 32); /* Infinite loop */ for(;;) { Event = osSignalWait(1, 2000); if(Event.status == osEventSignal) {//接收到一帧数据 osMutexWait (MutexGetTempHandle, 3); if((Rs422RxData.Sensor.Head == 0x4c) && (crc16(Rs422RxData.Char, HeaterComm.DataLength - 2) == Rs422RxData.Sensor.Crc)) { HeadData.Sensor.NtcTemp = Rs422RxData.Sensor.NtcTemp; for(uint8_t i=0; i<3; i++) { HeadData.Sensor.TcTemp.Data = Rs422RxData.Sensor.TcTemp.Data; // HeadData.Sensor.TcTemp.Value = Rs422RxData.Sensor.TcTemp.Value; } HeaterComm.CommStatus = 1; } else { TestData++; // HeaterComm.DataLength = 0; } HeaterComm.DataLength = 0; osMutexRelease (MutexGetTempHandle); HAL_UART_Receive_DMA(&huart6, Rs422RxData.Char, 32); } else {//接收超时 HeaterComm.CommStatus = 0; } xEventGroupSetBits(xCreatedEventGroup, EVENT_BIT_HEATER_COMM_TASK); osThreadYield(); } /* USER CODE END HeaterCommTask */ }
