为什么我的stm32中断处理程序没有响应?

2019-03-23 20:29发布

站内问答 / STM32/STM8
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  1. 为什么我的stm32中断处理程序没有响应?
    PA1->LED1 PA2->LED2

    PC0->KEY1 PC1->KEY2

    主程序

    #include "stm32f10x.h"
    #include "stm32f10x_conf.h"
    extern void Delay(vu32 nCount);
    void RCC_Config(void);
    void GPIO_Config(void);
    void EXTI_Config(void);
    void NVIC_Config(void);
    int main(void)
    {
    //SystemInit();
    RCC_Config();
    GPIO_Config();
    EXTI_Config();
    NVIC_Config();

    while (1)
    {

    }
    }

    void RCC_Config(void)
    {
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_GPIOC|RCC_APB2Periph_AFIO, ENABLE);
    /*开时钟*/
    }
    void GPIO_Config(void)
    {
    GPIO_InitTypeDef GPIO_InitStructure;
    GPIO_InitStructure.GPIO_Pin =GPIO_Pin_1|GPIO_Pin_2;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
    GPIO_Init(GPIOA, &GPIO_InitStructure);

    GPIO_InitStructure.GPIO_Pin =GPIO_Pin_0|GPIO_Pin_1;//KEY
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
    GPIO_Init(GPIOC, &GPIO_InitStructure);
    }

    void EXTI_Config(void)
    {
    GPIO_EXTILineConfig(GPIO_PortSourceGPIOC, GPIO_PinSource0);
    EXTI_InitTypeDef EXTI_InitStructure;
    EXTI_InitStructure.EXTI_Line = EXTI_Line0;
    EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
    EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;//下降沿
    EXTI_InitStructure.EXTI_LineCmd = ENABLE;//中断使能
    EXTI_Init(&EXTI_InitStructure);

    GPIO_EXTILineConfig(GPIO_PortSourceGPIOC, GPIO_PinSource1);
    EXTI_InitStructure.EXTI_Line = EXTI_Line1;
    EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
    EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;//下降沿
    EXTI_InitStructure.EXTI_LineCmd = ENABLE;//中断使能
    EXTI_Init(&EXTI_InitStructure);
    }

    void NVIC_Config(void)//中断嵌套优先级设置
    {
    NVIC_InitTypeDef NVIC_InitStructure;

    NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);//1组

    /* Enable the EXTI0_IRQn Interrupt */
    NVIC_InitStructure.NVIC_IRQChannel = EXTI0_IRQn;//0
    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
    NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
    NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
    NVIC_Init(&NVIC_InitStructure);

    /* Enable the EXTI1 Interrupt */
    NVIC_InitStructure.NVIC_IRQChannel = EXTI1_IRQn;//1
    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
    NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
    NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
    NVIC_Init(&NVIC_InitStructure);
    }


    中断处理程序
    void EXTI0_IRQHandler(void)
    {
    int i;
    if(EXTI_GetITStatus(EXTI_Line0) != RESET)
    {
    /* Clear the Key Button EXTI line pending bit */
    EXTI_ClearITPendingBit(EXTI_Line0);//清中断标志位
    for(i=0;i<2;i++)
    {
    GPIO_SetBits(GPIOA, GPIO_Pin_1);//GPIOB.5=1
    Delay(0xfffff);
    GPIO_SetBits(GPIOA, GPIO_Pin_2);//GPIOB.6=1
    Delay(0xfffff);
    GPIO_ResetBits(GPIOA, GPIO_Pin_1);//GPIOB.5=0
    Delay(0xfffff);
    GPIO_ResetBits(GPIOA, GPIO_Pin_2);//GPIOB.6=0
    Delay(0xfffff);
    }
    }
    }
    void EXTI1_IRQHandler(void)
    {
    int i;
    if(EXTI_GetITStatus(EXTI_Line1) != RESET)
    {
    /* Clear the Key Button EXTI line pending bit */
    EXTI_ClearITPendingBit(EXTI_Line1);//清中断标志位
    for(i=0;i<2;i++)
    {
    GPIO_SetBits(GPIOA, GPIO_Pin_1);//GPIOB.7=1
    Delay(0xfffff);
    GPIO_SetBits(GPIOA, GPIO_Pin_2);//GPIOC.8=1
    Delay(0xfffff);
    GPIO_ResetBits(GPIOA, GPIO_Pin_1);//GPIOB.7=0
    Delay(0xfffff);
    GPIO_ResetBits(GPIOA, GPIO_Pin_2);//GPIOB.8=0
    Delay(0xfffff);
    }
    }
    }


    extern void Delay(vu32 nCount) //简单的长时间延时函数
    {
    int i; //声明内部递减变量
    for(; nCount!= 0; nCount--) //递减变量计数
    {
    for (i=0; i<0xffff; i++);
    }
    }
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