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...
程序现象 程序说明 以下内容出自 stm32f1xx_hal_uart.c [..] This subsection also provides a set of additional functions providing enhanced receptionservices to user. (For example, these functions allow application to handleuse caseswhere number of data to be received is unknown).(#) Compared to ...
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 ...
* This parameter can be one of the following values: * USART1, USART2, USART3, UART4 or UART5. * @retval The received data. */ uint16_t USART_ReceiveData(USART_TypeDef* USARTx) { /* Check the parameters */ assert_param(IS_USART_ALL_PERIPH(USARTx)); /* Receive Data */ return...
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) ...
(UART4, USART_IT_TC) == SET ) 139 { 140 USART_ClearFlag(UART4, USART_FLAG_TC); 141 } 142 //溢出-如果发生溢出需要先读SR,再读DR寄存器则可清除不断入中断的问题 143 if(USART_GetFlagStatus(UART4,USART_FLAG_ORE) == SET) 144 { 145 USART_ReceiveData(UART4); 146 USART_ClearFlag(UART...
This is the 4th tutorial in the STM32 UART Series. In this tutorial we will use the DMA to receive the data in the normal and circular mode..
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. ...
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. ...
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...