stm32配置中断死机？？？？

只看该作者 · 2013-4-20 17:26

void Touch_Config(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
EXTI_InitTypeDef EXTI_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
#if 1

//下面是SPI相关GPIO初始化
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5 | GPIO_Pin_7;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;  //通用推挽输出
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA,&GPIO_InitStructure);

//按键user
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8 ;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;  //通用推挽输出

GPIO_Init(GPIOA,&GPIO_InitStructure);

//下面是SPI相关GPIO初始化
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;  //上拉输入
GPIO_Init(GPIOA,&GPIO_InitStructure);

//Configure PC6 pin: TP_CS pin
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; //推挽输出
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOC,&GPIO_InitStructure);

//Configure PC4 pin: TP_INT pin
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU; //上拉输入
GPIO_Init(GPIOC,&GPIO_InitStructure);
#endif
LED_ON(LED1);
#if 1

/*---------------------中断优先级配置--------------------------------------------------------------*/
/* Configure one bit for preemption priority */
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);    // 设置中断组为2

NVIC_InitStructure.NVIC_IRQChannel=EXTI4_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=2;
NVIC_InitStructure.NVIC_IRQChannelSubPriority=2;
NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLE;
NVIC_Init(&NVIC_InitStructure);
NVIC_InitStructure.NVIC_IRQChannel=EXTI3_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=2;
NVIC_InitStructure.NVIC_IRQChannelSubPriority=1;
NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLE;
NVIC_Init(&NVIC_InitStructure);

/*---------------------外部中断优先级配置--------------------------------------------------------------*/
LED_ON(LED2);
    /* Generate software interrupt: simulate a falling edge applied on PEN EXTI line */
/*-------------触摸屏中断---------------------*/
    GPIO_EXTILineConfig(GPIO_PortSourceGPIOC, GPIO_PinSource4);

    /* Configure PEN EXTI Line to generate an interrupt on falling edge */
    EXTI_InitStructure.EXTI_Line = EXTI_Line4;
    EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
    EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
    EXTI_InitStructure.EXTI_LineCmd = ENABLE;
    EXTI_Init(&EXTI_InitStructure);

EXTI_GenerateSWInterrupt(EXTI_Line4);
LED_ON(LED3);

/*-------------------按键中断------------------------*/
GPIO_EXTILineConfig(GPIO_PortSourceGPIOA, GPIO_PinSource8);

EXTI_InitStructure.EXTI_Line = EXTI_Line3;
    EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
    EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
    EXTI_InitStructure.EXTI_LineCmd = ENABLE;
    EXTI_Init(&EXTI_InitStructure);

  // EXTI_GenerateSWInterrupt(EXTI_Line4);

EXTI_GenerateSWInterrupt(EXTI_Line3);

#endif

}
程序走到第一红色部分死机
LED1,LED2,亮
LED3灭的
不知道哪里出问题了？
/*---------------------------------------------时钟配置---------------------------------------------------------------------*/
RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1 | RCC_APB2Periph_GPIOA  | RCC_APB2Periph_GPIOC
   |RCC_APB2Periph_GPIOD | RCC_APB2Periph_GPIOE
   ,ENABLE );

RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO,ENABLE); //使能IO复用功能，使用中断功能重要！！！

while(SysTick_Config(SystemCoreClock / 1000));

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