USART通信中断编程

wcxstm32 · 发表于 2016-10-7 22:44:44

   这是我根据mini开发板“第26讲 STM32串口寄存器库函数配置方法+手把手教你写串口通信实例”，写的程序，
编译能够通过，就是不能执行中断函数，已上传有附件，望得到高人的指点
#include "stm32f10x.h"

void mygpio_init(void);
void myUSART_init(void);
void myUSART_IT_init(void);

void USART1_IRQHandler(void)
{
char ch;
if(USART_GetITStatus(USART1,USART_IT_RXNE))
{
ch=USART_ReceiveData(USART1);
USART_SendData(USART1,ch);
}
}
int main(void)
{
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);//初始化中断向量表
mygpio_init();                                  //PA.9，PA.10初始化
myUSART_init();                         //USART1初始化
myUSART_IT_init();                                        //USART1接收中断初始化

USART_SendData(USART1,'Y');
while(1);
}

void mygpio_init(void)                            //PA.9，PA.10初始化
{
  GPIO_InitTypeDef  GPIO_InitStructure;

  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);    //使能PA口时钟
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9|GPIO_Pin_10;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; //复用输出
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_Init(GPIOA, &GPIO_InitStructure);
}
void myUSART_init(void)                         //USART1初始化
{
USART_InitTypeDef  USART_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE);

USART_InitStructure.USART_BaudRate=9600;
USART_InitStructure.USART_HardwareFlowControl=USART_HardwareFlowControl_None;
USART_InitStructure.USART_Mode=USART_Mode_Tx|USART_Mode_Rx;
USART_InitStructure.USART_Parity=USART_Parity_No;
USART_InitStructure.USART_StopBits=USART_StopBits_1;
USART_InitStructure.USART_WordLength=USART_WordLength_8b;
USART_Init(USART1,&USART_InitStructure);
USART_Cmd(USART1,ENABLE);
}

void myUSART_IT_init(void)                      //USART1接收中断初始化
{
   NVIC_InitTypeDef NVIC_InitStrue;
   USART_ITConfig(USART1,USART_IT_RXNE,ENABLE);//使能接收中断

   NVIC_InitStrue.NVIC_IRQChannel=USART1_IRQn;
   NVIC_InitStrue.NVIC_IRQChannelCmd=ENABLE;
   NVIC_InitStrue.NVIC_IRQChannelPreemptionPriority=1;
   NVIC_InitStrue.NVIC_IRQChannelSubPriority=1;
   NVIC_Init(&NVIC_InitStrue);
}