STM32-USART DMA_Interrupt例程的学习 这是固件库里的一个例程,决定从这里入手依次学习一下外设,下面是这个例程的介绍: This example provides a basic communication between USART1 and USART2 using DMA capability, flags and interrupts. First, the DMA transfers data from TxBuffer2 buffer to USART2 Transmi...
USART_Init(USART1, &USART_InitStructure); /* Enable the USART Transmoit interrupt: this interrupt is generated when the USART1 transmit data register is empty */ USART_ITConfig(USART1, USART_IT_TXE, ENABLE); /* Enable the USART Receive interrupt: this interrupt is generated when the USART1...
uint8_t TxBuffer1[] = "USART Interrupt Example: This is USART1 DEMO"; uint8_t RxBuffer1[], rec_f, tx_flag, i; __IO uint8_t TxCounter1 = 0x00; __IO uint8_t RxCounter1 = 0x00; uint32_t Rec_Len; 1. 串口中断函数配置如下所示: //--- void USART_SendChar(USART_TypeDef* ...
USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx; /* Configure the USART1 */ USART_Init(USART1, &USART_InitStructure); /* Enable the USART Transmoit interrupt: this interrupt is generated when the USART1 transmit data register is empty */ USART_ITConfig(USART1, USART_IT_TX...
1: A USART interrupt is generated whenever PE=1 in the USART_SR registerBit 7 TXEIE: TXE interrupt enableThis bit is set and cleared by software.0: Interrupt is inhibited1: A USART interrupt is generated whenever TXE=1 in the USART_SR register 4楼2017-06-17 19:40 回复 F_U_C_K_...
{/* Disable the USART1 Transmit interrupt */USART_ITConfig(USART1,USART_IT_TXE,DISABLE); } } }voidSendSerial(uint8_tbuffer[],uint8_tsize) {inti=0;TxCounter=0;NbrOfDataToTransfer=size;for(i=0;i<size; ++i) {TxBuffer[i] =buffer[i]; }USART_ITConfig(USART1,USART_IT_TXE,ENABLE);...
63 * USART1发送len个字节. 64 * buf:发送区首地址 65 * len:发送的字节数(为了和本代码的接收匹配,这里建议不要超过64个字节) 66 **/ 67 void USART1_Send_Data(u8 *buf,u16 len) 68 { 69 u16 t; 70 GPIO_SetBits(GPIOC,GPIO_Pin_9); ...
STM32入门编程总结4 (中断+串口) 系统异常中断与外部中断统称为中断,复位中断的优先级最高, NVIC (Nested Vectored Interrupt 2022-02-19 22:12:05 如何通过配置串口的接收作为中断源 使用中断 通过配置串口的接收作为中断源,开启中断输出控制,配置NVIC。开启中断通道。 //开启中断输出控制 USART_ITConfig(USART2...
串口中断通常被视为外部中断。虽然串口控制器(如USART、UART等)可能集成在微控制器或处理器的内部,但从中断的角度来看,串口中断是由处理器外部的通信事件触发的。这些事件包括数据的接收、发送完成、错误检测等,它们通过串口控制器的内部逻辑检测,并转换为中断信号发送给处理器。 2025-01-29 15:03:00 请问...
63 * USART1发送len个字节. 64 * buf:发送区首地址 65 * len:发送的字节数(为了和本代码的接收匹配,这里建议不要超过64个字节) 66 **/ 67 void USART1_Send_Data(u8 *buf,u16 len) 68 { 69 u16 t; 70 GPIO_SetBits(GPIOC,GPIO_Pin_9); ...