A口中断改成B口就无法进入了，请指教。

xiaodd6316 · 发表于 2015-9-2 16:26:36

void EXTIX_Init(void)
{

  EXTI_InitTypeDef EXTI_InitStructure;
  NVIC_InitTypeDef NVIC_InitStructure;

//?????? ?ì??????-->GPIOA.2   ???????
    GPIO_InitTypeDef GPIO_InitStructure;

    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB,ENABLE);//????PORTA,PORTE?±??
   GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
   GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPD; //PA2?è?????????????????
   GPIO_Init(GPIOB, &GPIO_InitStructure);//??????GPIOA.2

    //   ?????????°??????????????

    //????????·? PA2 ?ì??????
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO,ENABLE); //?????????????±??
   GPIO_EXTILineConfig(GPIO_PortSourceGPIOB,GPIO_PinSource2);
    EXTI_InitStructure.EXTI_Line=EXTI_Line2;
   EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising;
  EXTI_InitStructure.EXTI_LineCmd = ENABLE;
EXTI_Init(&EXTI_InitStructure);  //?ù??EXTI_InitStruct?????¨???????????????èEXTI?????÷

NVIC_InitStructure.NVIC_IRQChannel = EXTI2_IRQn;   //????°??ü?????ù?????????????¨??
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x00; //??????????0??
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x0;     //×???????0
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;        //?????????????¨??
NVIC_Init(&NVIC_InitStructure);

}

把B改成A就可以