为什么外部中断其他引脚不用设置中断模式和触发方式还有使能？

lvonve

[mw_shl_code=c,true]//GPIOE.2 GPIO_EXTILineConfig(GPIO_PortSourceGPIOE,GPIO_PinSource2); EXTI_InitStructure.EXTI_Line=EXTI_Line2; //KEY2 EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt; EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling; EXTI_InitStructure.EXTI_LineCmd = ENABLE; EXTI_Init(&EXTI_InitStructure); //GPIOE.3 GPIO_EXTILineConfig(GPIO_PortSourceGPIOE,GPIO_PinSource3); EXTI_InitStructure.EXTI_Line=EXTI_Line3; EXTI_Init(&EXTI_InitStructure); //GPIOE.4 GPIO_EXTILineConfig(GPIO_PortSourceGPIOE,GPIO_PinSource4); EXTI_InitStructure.EXTI_Line=EXTI_Line4; EXTI_Init(&EXTI_InitStructure); //GPIOA.0 GPIO_EXTILineConfig(GPIO_PortSourceGPIOA,GPIO_PinSource0); EXTI_InitStructure.EXTI_Line=EXTI_Line0; EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising; EXTI_Init(&EXTI_InitStructure);[/mw_shl_code] [mw_shl_code=c,true]

[/mw_shl_code] [mw_shl_code=c,true]为什么其他的不需要再设置一下模式、触发方式和使能呢？？？谢谢大家！[/mw_shl_code]

jermy_z

因为上面已经赋值了

下面就不需要了

你再复制一遍也行   不过纯粹画蛇添足

lvonve

是这个图

lvonve

哦，这样啊，谢谢你啦