EXTI_InitTypeDef EXTI_InitStructure是结构体定义，你先看一看EXTI_InitTypeDef这个结构体里面包含了那些元素，EXTI_InitStructure就被定义为EXTI_InitTypeDef的结构体有一样的结构（元素）。EXTI_Init（&EXTI_InitStructure)是讲EXTI初始化，初始化所需要的参数在EXTI_
EXTI_InitTypeDef EXTI_InitStructure; NVIC_InitTypeDef NVIC_InitStructure; RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO,ENABLE); GPIO_EXTILineConfig(GPIO_PortSourceGPIOC,GPIO_PinSource13); EXTI_InitStructure.EXTI_Line=EXTI_Line13; EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt; EXTI_InitStructure....
EXTI_InitStructure.EXTI_Mode =EXTI_Mode_Interrupt ;//为中断请求 EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling; //下降沿触发 EXTI_InitStructure.EXTI_LineCmd =ENABLE ; //使能line EXTI_Initstructure.EXTI_Line=EXTI_Line5; //选定line EXTI_Init(&EXTI_InitStructure); //中断初始化 */ ///...
/*在EXTI中配置 EXTI线3为中断模式,下降沿有效,并使能该配置 */EXTI_InitStructure.EXTI_LineCmd =___ ;( ) EXTI_Init(&EXTI_InitStructure); A. EXTI_Trigger_Rising B. EXTI_Trigger_Falling C. EXTI_Trigger_Rising_Falling D. EXTI_Trigger_DISABLE...