外部中断进不去

随风飘动 · 发表于 2018-4-14 15:55:36

配置按键中断，PA0，以下是各项配置，编译也不出错，但是中断就是进不去，按下按键的状态为高电平，我用万用表量过了，[mw_shl_code=applescript,true]void NVIC_Configuration()
{
NVIC_InitTypeDef NVIC_InitStructure;
//éèÖÃÖD¶ÏóÅÏè¼¶·Ö×é

//ÅäÖÃÖD¶Ïí¨μà￡¬Ôústm32l1xx.hÖD2éÕò
NVIC_InitStructure.NVIC_IRQChannel = EXTI0_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority=0;
NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLE;
NVIC_Init(&NVIC_InitStructure);

}

void  EXTI_Key_Init(void)
{
//GPIO  EXTI ½á11ìå3õê¼»ˉ
GPIO_InitTypeDef  GPIO_InitStructure;
EXTI_InitTypeDef  EXTI_InitStructure;
//ê1Äüê±ÖóSYSCFG
//PA0
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA,ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG,ENABLE);

GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;
GPIO_InitStructure.GPIO_Pin  = GPIO_Pin_0;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
GPIO_InitStructure.GPIO_Speed= GPIO_Speed_40MHz;
GPIO_Init(GPIOA,&GPIO_InitStructure);

//Ñ¡ÔñGPIOòy½Å×÷Îaía2¿ÖD¶ÏÏß
SYSCFG_EXTILineConfig(EXTI_PortSourceGPIOA,EXTI_PinSource0);

//EXTI0
EXTI_InitStructure.EXTI_Line=EXTI_Line0;
EXTI_InitStructure.EXTI_LineCmd=ENABLE;
EXTI_InitStructure.EXTI_Mode =EXTI_Mode_Interrupt;
EXTI_InitStructure.EXTI_Trigger=EXTI_Trigger_Rising;//EXTI_Trigger_Rising_Falling;//EXTI_Trigger_Rising;//EXTI_Trigger_Falling;
EXTI_Init(&EXTI_InitStructure);

}
//ÖD¶Ï·tÎñoˉêyÃûêÇÏμí3¶¨òåμÄ￡¬2»êÇèËÎaìí¼óμÄ￡¬Ôústm32l1xx_hs.sÎÄ¼tÖD

void EXTI0_IRQHandler()
{
//¿aê¼μÄê±oòÑó3ùò»¶Îê±¼ä
delay_ms(50);
//
  if(Key_user ==1)
{
      LED4_ON;
}
EXTI_ClearITPendingBit(EXTI_Line0);
}

main.c
int main(void)
{
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0);
SystemInit();
uart_init();
delay_init(24);
LED_Init();
KEY_Init();
EXTI_Key_Init();
  LED3_ON;
  while(1)
{

}
}[/mw_shl_code]
按键的初始化什么的都没问题，就是进不去中断，请教一下，，我用的是stm32l152的板子