使用ST-LINK在线调试时一直进外部中断，不触发也进，中断标识一直无法清除

Alien2017 · 发表于 2018-1-15 08:47:28

今天调试STM32F407遇到一个问题，设置了两个外部中断，正常运行时无法进中断，使用ST-LINK在线调试时一直进中断，不触发也进，然后发现中断标识一直无法清除。大神给点指点。谢谢
这是中断配置代码：

void Func_Capture_Init(void)
{
GPIO_InitTypeDef  GPIO_InitStructure;
EXTI_InitTypeDef EXTI_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;

RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOD, ENABLE);//使能GPIOE时钟
RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE);

//GPIOE8初始化设置
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13 | GPIO_Pin_14;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN; //输入模式
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;//50MHz
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;//上拉
GPIO_Init(GPIOD, &GPIO_InitStructure);//初始化
      EXTIX_Init();

}

void EXTIX_Init(void)
{
EXTI_InitTypeDef EXTI_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;

SYSCFG_EXTILineConfig(EXTI_PortSourceGPIOD,EXTI_PinSource13 | EXTI_PinSource14);

    EXTI_InitStructure.EXTI_Line=EXTI_Line13 | EXTI_Line14;
    EXTI_InitStructure.EXTI_LineCmd = ENABLE;
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling; //下降沿触发中断
    EXTI_Init(&EXTI_InitStructure);

    NVIC_InitStructure.NVIC_IRQChannel = EXTI15_10_IRQn;
    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x01;
    NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x02;
    NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
    NVIC_Init(&NVIC_InitStructure);
}

void EXTI15_10_IRQHandler(void)
{
if(EXTI_GetFlagStatus(EXTI_Line13) != RESET)       //CPT_IN1触发
{
printf ("开关1有闭合动作 ...  \r\n");
CTR_DO1 = SET;
CTR_DO2 = SET;
CTR_EN = SET;
EXTI_ClearITPendingBit(EXTI_Line13);
}

if(EXTI_GetFlagStatus(EXTI_Line14) != RESET)       //CPT_IN2触发
{
printf ("开关2有闭合动作 .. . \r\n");
CTR_DO1 = RESET;
CTR_DO2 = RESET;
CTR_EN = SET;
EXTI_ClearITPendingBit(EXTI_Line14);
}
}

//初始化PD13/14为输入口.中断采集
//PD13<--->IN1 低电平有效
//PD14<--->IN2 低电平有效

void Func_Capture_Init(void)
{
GPIO_InitTypeDef  GPIO_InitStructure;
EXTI_InitTypeDef EXTI_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;

RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOD, ENABLE);//使能GPIOE时钟
RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE);

//GPIOE8初始化设置
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13 | GPIO_Pin_14;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN; //输入模式
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;//50MHz
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;//上拉
GPIO_Init(GPIOD, &GPIO_InitStructure);//初始化
}