外部中断如果是GPIOB12和GPIOD12这两个都是属于EXTI12的，那怎么判断是哪个中断？

Flymer · 发表于 2015-12-4 17:49:26

外部中断如果是GPIOB12和GPIOD12这两个都是属于EXTI12的，那怎么判断是否产生了EXTI_LINE中断？

[mw_shl_code=c,true] /* EXTI line gpio config(PB12) */ GPIO_InitStructure.GPIO_Pin = PIN_KEY10 ; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; GPIO_Init(PORT_KEY10, &GPIO_InitStructure); /* EXTI line(PB12) mode config */ GPIO_EXTILineConfig(GPIO_PortSourceGPIOB, GPIO_PinSource12); EXTI_InitStructure.EXTI_Line = EXTI_Line12; EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt; EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling; // EXTI_InitStructure.EXTI_LineCmd = ENABLE; EXTI_Init(&EXTI_InitStructure); /* EXTI line gpio config(PD12) */ GPIO_InitStructure.GPIO_Pin = PIN_KEY4 ; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; GPIO_Init(PORT_KEY4, &GPIO_InitStructure); /* EXTI line(PD12) mode config */ GPIO_EXTILineConfig(GPIO_PortSourceGPIOD, GPIO_PinSource12); EXTI_InitStructure.EXTI_Line = EXTI_Line12; EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt; EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling; // EXTI_InitStructure.EXTI_LineCmd = ENABLE; EXTI_Init(&EXTI_InitStructure);[/mw_shl_code]

那我在中断服务程序中该怎么写了？