uart_rx_irq(USART_1,1); //配置串口接收的缓冲区及缓冲区长度 example_receivexfer.dataSize = 1; example_receivexfer.data = &example_rx_buffer; //设置中断函数及其参数 uart_set_handle(USART_1, &example_g_lpuartHandle, example_uart_callback, NULL, 0, example_receivexfer.data, 1); NVIC_Set...
HAL_UART_Receive_IT(&huart1, &r_data,1); } 3、其它不用修改的代码 /** * @brief UART MSP Initialization * This function configures the hardware resources used in this example * @param huart: UART handle pointer * @retval None*/voidHAL_UART_MspInit(UART_HandleTypeDef*huart) { GPIO_Ini...
* @retval None*/voidHAL_UART_RxCpltCallback(UART_HandleTypeDef *UartHandle) { receive_buffer[r_count++] =r_data;/*定时器计数器清零*/__HAL_TIM_SET_COUNTER(&htim7,0);/*开启定时器*/HAL_TIM_Base_Start_IT(&htim7);/*打开接收中断*/HAL_UART_Receive_IT(&huart1, &r_data,1); }/*...
Now it is time to understand which features to use to receive data with UART and DMA to offload CPU. As for the sake of this example, we use memory buffer array of20bytes. DMA will transfer data received from UART to this buffer. Listed are steps to begin. Initial assumption is that ...
126 void UART4_IRQHandler(void) //UART4 Receive Interrupt 127 { 128 u8 Res; 129 130 if(USART_GetITStatus(UART4, USART_IT_RXNE) != RESET) //接收中断(接收到的数据必须是0x0d 0x0a结尾) 131 { 132 Res =USART_ReceiveData(UART4);//(USART1->DR); //读取接收到的数据 ...
{HAL_UART_Transmit(&huart1,(uint8_t*)cmd,strlen(cmd),timeout);intlen=0;intlen_read=0;HAL_Delay(100);while(1){if(HAL_UART_Receive(&huart1,(uint8_t*)response+len,1,timeout)==HAL_OK){len++;if(strstr(response,"OK")!=NULL){returnlen;}if(strstr(response,"ERROR")!=NULL){...
();/* 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_DMA_Init();MX_USART1_UART_Init();MX_USART2_UART_...
();MX_USART1_UART_Init();MX_USART2_UART_Init();/* USER CODE BEGIN 2 */ret = OPRT_OK;consttuya_iot_config_tconfig = { .productkey = TUYA_PRODUCT_KEY, .software_ver = SOFTWARE_VER, .imei = TUYA_DEVICE_IMEI, .uuid = TUYA_DEVICE_UUID, .authkey = TUYA_DEVICE_AUTHKEY, .psk ...
无 */intfputc(int ch,FILE*f){HAL_UART_Transmit(&huart1,(uint8_t*)&ch,1,0xffff);returnch;}/** * 函数功能: 重定向c库函数getchar,scanf到DEBUG_USARTx * 输入参数: 无 * 返回值: 无 * 说明:无 */intfgetc(FILE*f){uint8_t ch=0;HAL_UART_Receive(&huart1,&ch,1,0xffff);return...
Combine UART + DMA for data reception Now it is time to understand which features to use to receive data with UART and DMA to offload CPU. As for the sake of this example, we use memory buffer array of20bytes. DMA will transfer data received from UART to this buffer. ...