STM32 EXTI外部中断进不了中断程序，指高手指点

james-418028 提问时间：2013-3-15 16:03 /

#include "stm32f10x.h"
GPIO_InitTypeDef GPIO_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
EXTI_InitTypeDef EXTI_InitStructure;

void LED_Init(void)
{
/* GPIOD Periph clock enable */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD, ENABLE);
/* Configure PD6 and PD13 in output pushpull mode */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_13;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(GPIOD, &GPIO_InitStructure);
/*GPIOC Periph clock enable*/
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7;  //choose gpio pin
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz;   //set gpio speed
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;   //set gpio mode
GPIO_Init(GPIOC, &GPIO_InitStructure);      //initial gpio port
}

void GPIO_EXTIConfigration(void)
{
//GPIOE Periph clock enable
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOE, ENABLE);
//set pe2 pe3 pe4 pe5 input mode
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2 | GPIO_Pin_3 | GPIO_Pin_4 | GPIO_Pin_5;
// GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
    GPIO_Init(GPIOE, &GPIO_InitStructure);      //initial gpio port
/*       ENABLE AFIO CLOCK    */
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE);
/*   connect gpio to exti   */
    GPIO_EXTILineConfig(GPIO_PortSourceGPIOE, GPIO_PinSource2);
    GPIO_EXTILineConfig(GPIO_PortSourceGPIOE, GPIO_PinSource3);
    GPIO_EXTILineConfig(GPIO_PortSourceGPIOE, GPIO_PinSource4);
    GPIO_EXTILineConfig(GPIO_PortSourceGPIOE, GPIO_PinSource5);
//   config EXTI initial
    EXTI_InitStructure.EXTI_Line = EXTI_Line2|EXTI_Line3|EXTI_Line4|EXTI_Line5;
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
EXTI_InitStructure.EXTI_LineCmd = ENABLE;
EXTI_Init(&EXTI_InitStructure);

}

void NVIC_Configration(void)
{
    NVIC_SetVectorTable(NVIC_VectTab_FLASH,0x0);    //system default NVIC VECTTAB TO FLASH, so needn't
NVIC_InitStructure.NVIC_IRQChannel = EXTI2_IRQn|EXTI3_IRQn|EXTI4_IRQn|EXTI9_5_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x0f ;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x0f;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
}
void main()
{
LED_Init();
GPIO_EXTIConfigration();
NVIC_Configration();
while(1)
{
;
}
}
中断子程序：
/*
*
*
*
*
*/
void EXTI2_IRQHandler(void)
   {
   if( (EXTI_GetITStatus(EXTI_Line2))!=0 )
     {
        GPIOD->BSRR = 0x00000040;
  EXTI_ClearITPendingBit(EXTI_Line2);

     }
}
/*
*
*
*
*
*/
void EXTI3_IRQHandler(void)
{
   if( (EXTI_GetITStatus(EXTI_Line3))!=0 )
     {
     GPIOD->BSRR = 0x00002000;
  EXTI_ClearITPendingBit(EXTI_Line3);

     }
}
/*
*
*
*
*
*/
void EXTI4_IRQHandler(void)
{
   if( (EXTI_GetITStatus(EXTI_Line4))!=0 )
     {
     GPIOC->BSRR = 0x00000080;
  EXTI_ClearITPendingBit(EXTI_Line4);
     }

}
/*
*
*
*
*
*/
void EXTI9_5_IRQHandler(void)
{
   if( (EXTI_GetITStatus(EXTI_Line5))!=0 )
     {
     GPIOC->BSRR = 0x00000040;
  EXTI_ClearITPendingBit(EXTI_Line5);
     }

}

利用开发板仿真的时候可以看到对应的peng = 1，却进不了中断程序，请前辈帮忙指点