把按键配置成外部中断，按下按键却进入硬故障，点IAR的停止运行按钮，程序一直停在这个地方 [img]file:///C:/DOCUME~1/ThinkPad/LOCALS~1/Temp/~FE(%`Z6BF[7OLNG`JQCJCK.jpg[/img] ，这里应该是硬故障吧，请问会是什么问题？不按下外部中断按键的时候，程序运行没有问题，按下外部中断按键程序就死掉了，外部中断配置程序如下：
void GPIO_BottonConfig(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
GPIO_StructInit(&GPIO_InitStructure);
/*configure GPIO Botton ports PD3、PD4 as in floating ports*/
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3 | GPIO_Pin_4;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_10MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOD,&GPIO_InitStructure);
}
void EXTI_Config(void)
{
EXTI_InitTypeDef EXTI_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
NVIC_InitStructure.NVIC_IRQChannel = EXTI3_IRQChannel;//配置外部中断3的优先级
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
NVIC_InitStructure.NVIC_IRQChannel = EXTI4_IRQChannel;//配置外部中断4的优先级
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 2;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
GPIO_BottonConfig();//配置PD3、PD4为浮空输入
GPIO_EXTILineConfig(GPIO_PortSourceGPIOD,GPIO_PinSource3);
EXTI_StructInit(&EXTI_InitStructure);
EXTI_InitStructure.EXTI_Line = EXTI_Line3;
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising;
EXTI_InitStructure.EXTI_LineCmd = ENABLE;
EXTI_Init(&EXTI_InitStructure);
GPIO_EXTILineConfig(GPIO_PortSourceGPIOD,GPIO_PinSource4);
EXTI_StructInit(&EXTI_InitStructure);
EXTI_InitStructure.EXTI_Line = EXTI_Line4;
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising;
EXTI_InitStructure.EXTI_LineCmd = ENABLE;
EXTI_Init(&EXTI_InitStructure);
}
void NVIC_Configuration(void)
{
//NVIC_InitTypeDef NVIC_InitStructure;
NVIC_SCBDeInit();//设置外设SCB寄存器为默认值
#ifdef VECT_TAB_RAM
/* Set the Vector Table base location at 0x20000000 */
NVIC_SetVectorTable(NVIC_VectTab_RAM, 0x0);
#else /* VECT_TAB_FLASH */
/* Set the Vector Table base location at 0x08000000 */
NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0);
#endif
/* Configure two bit for preemption priority */
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
} |
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