EXTI0可以产生中断，但换成EXTI3就无法产生中断

馒头仔

void EXTIX_Init(void)
{
 
  EXTI_InitTypeDef EXTI_InitStructure;
  NVIC_InitTypeDef NVIC_InitStructure;
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO|RCC_APB2Periph_GPIOA|RCC_APB2Periph_GPIOC|RCC_APB2Periph_GPIOD,ENABLE); 
  GPIO_EXTILineConfig(GPIO_PortSourceGPIOD,GPIO_PinSource3); 
  EXTI_InitStructure.EXTI_Line=EXTI_Line3;
  EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
  EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
  EXTI_Init(&EXTI_InitStructure); 
  EXTI_GenerateSWInterrupt(EXTI_Line3);

  NVIC_InitStructure.NVIC_IRQChannel = EXTI3_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x02; 
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x03; 
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure); 

}

 
void EXTI3_IRQHandler(void)
{
delay_ms(100);
if(EXTI_GetITStatus(EXTI_Line3!=0)) 
{
LED0=1-LED0;
}  
EXTI_ClearITPendingBit(EXTI_Line3); 
}

lycreturn

 不要辣么粗心   中断函数里  你这括号整飚了    if(EXTI_GetITStatus(EXTI_Line3!=0)) EXTI_Line3!=0永远成了   他的值为1    相当于去判断外部中断0了

lycreturn

回复【3楼】馒头仔:
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 括号  位置放错了 应该这样写 if(EXTI_GetITStatus(EXTI_Line3)!=0)

馒头仔

回复【2楼】lycreturn:
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还是不懂，如果按你的说法，那应该怎样改才能使EXTI3产生中断呢？？谢谢

馒头仔

回复【4楼】lycreturn:
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十分感谢，万分感谢，从心底深处感谢啊，这一个小小的错误搞了我半天了，原来错在这里