stm32快速学习5——串口中断接收.doc

串口自发自收设定串口时钟设定引脚功能中断优先级设定串口Main文件#includestm32f10x.hvoidRCC_Configuration(void);voidGPIO_Configuration(void);voidUSART_Configuration(void);voidNVIC_Configuration(void);intmain(void)RCC_Configuration();GPIO_Configuration();NVIC_Configuration();USART_Configuration();while(1);voidRCC_Configuration(void)RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1,ENABLE);voidGPIO_Configuration(void)GPIO_InitTypeDefGPIO_InitStructure;GPIO_InitStructure.GPIO_Pin=GPIO_Pin_10;GPIO_InitStructure.GPIO_Mode=GPIO_Mode_IN_FLOATING;GPIO_Init(GPIOA,&GPIO_InitStructure);GPIO_InitStructure.GPIO_Pin=GPIO_Pin_9;GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz;GPIO_InitStructure.GPIO_Mode=GPIO_Mode_AF_PP;GPIO_Init(GPIOA,&GPIO_InitStructure);voidUSART_Configuration(void)USART_InitTypeDefUSART_InitStructure;USART_InitStructure.USART_BaudRate=115200;USART_InitStructure.USART_WordLength=USART_WordLength_8b;USART_InitStructure.USART_StopBits=USART_StopBits_1;USART_InitStructure.USART_Parity=USART_Parity_No;USART_InitStructure.USART_HardwareFlowControl=USART_HardwareFlowControl_None;USART_InitStructure.USART_Mode=USART_Mode_Tx|USART_Mode_Rx;USART_Init(USART1,&USART_InitStructure);USART_Cmd(USART1,ENABLE);USART_ITConfig(USART1,USART_IT_RXNE,ENABLE);/*接收中断使能*/voidNVIC_Configuration(void)NVIC_InitTypeDefNVIC_InitStructure;NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0);NVIC_InitStructure.NVIC_IRQChannel=USART1_IRQn;/*3.4的库不是使用USART1_IRQChannel，看stm32f10x.h吧*/NVIC_InitStructure.NVIC_IRQChannelSubPriority=0;NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLE;NVIC_Init(&NVIC_InitStructure);Stm32f10x_it.c加入voidUSART1_IRQHandler(void)unsignedinti;if(USART_GetFlagStatus(USART1,USART_IT_RXNE)=SET)i=USART_ReceiveData(USART1);USART_SendData(USART1,i);while(USART_GetFlagStatus(USART1,USART_FLAG_TC)=RESET);if(USART_GetIT