为什么进不去中断？？实在是看不出来？？

Seeking

#include "stm32f10x.h"
#define LED5REV   GPIO_WriteBit(GPIOB,GPIO_Pin_5,(BitAction)(1-(GPIO_ReadOutputDataBit(GPIOB,GPIO_Pin_5)))) 
#define LED5OFF  GPIO_SetBits(GPIOB,GPIO_Pin_5)
#define LED5ON  GPIO_ResetBits(GPIOB,GPIO_Pin_5)

static __IO uint32_t TimingDelay;
void Delay(__IO uint32_t nTime);

EXTI_InitTypeDef   EXTI_InitStructure;
GPIO_InitTypeDef   GPIO_InitStructure;
NVIC_InitTypeDef   NVIC_InitStructure;
void Systick()
{
if (SysTick_Config(SystemCoreClock / 1000000))
  { 
    while (1);
  }
}

void EXTI0_Config(void)
{ 

  /* Enable GPIOA clock */
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
    /* Configure PA.00 pin as input floating */
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
  GPIO_Init(GPIOA, &GPIO_InitStructure);

  /* Enable AFIO clock */
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE);

  /* Connect EXTI0 Line to PA.00 pin */
  GPIO_EXTILineConfig(GPIO_PortSourceGPIOA, GPIO_PinSource0);

  /* Configure EXTI0 line */
  EXTI_InitStructure.EXTI_Line = EXTI_Line0;
  EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
  EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;//????????·?  
  EXTI_InitStructure.EXTI_LineCmd = ENABLE;
  EXTI_Init(&EXTI_InitStructure);

  /* Enable and set EXTI0 Interrupt to the lowest priority */
  NVIC_InitStructure.NVIC_IRQChannel = EXTI0_IRQn;
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0);
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority =0;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);
}

void led_init()
{
  GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
  GPIO_Init(GPIOB, &GPIO_InitStructure);
}

int main(void)
{
Systick();
led_init();
EXTI0_Config();
EXTI_GenerateSWInterrupt(EXTI_Line0);//?ú?ú?????í??????
   while (1);
}

void Delay(__IO uint32_t nTime)
{ 
  TimingDelay = nTime;

  while(TimingDelay != 0);
}

void TimingDelay_Decrement(void)
{
  if (TimingDelay != 0x00)
  { 
    TimingDelay--;
  }
}

void EXTI0_IRQHandler()
{
Delay(10;
if(EXTI_GetITStatus(EXTI_Line0)==SET)
{
LED5ON;
     EXTI_ClearITPendingBit(EXTI_Line0);
}
}

PA0遇到下降沿为什么不触发中断呢？

正点原子

慢慢查配置。