关于低功耗唤醒，RTC唤醒和和按键中断唤醒不能同时使用

 EXTI_InitTypeDef EXTI_initstructure;

        NVIC_InitTypeDef  NVIC_InitStructure;

        

        RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE);

        RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_AFIO, ENABLE);

        

        /* 按键引脚配置 */

        //按键已经有专门的配置，这里省略

        

        

        GPIO_EXTILineConfig(GPIO_PortSourceGPIOA, GPIO_PinSource9);

        GPIO_EXTILineConfig(GPIO_PortSourceGPIOA, GPIO_PinSource11); 

        GPIO_EXTILineConfig(GPIO_PortSourceGPIOA, GPIO_PinSource10);

        GPIO_EXTILineConfig(GPIO_PortSourceGPIOA, GPIO_PinSource12);

        

        

        EXTI_DeInit();         

        EXTI_initstructure.EXTI_Line = EXTI_Line11 | EXTI_Line9 | EXTI_Line10 | EXTI_Line12; 

        EXTI_initstructure.EXTI_Mode = EXTI_Mode_Interrupt;

        EXTI_initstructure.EXTI_Trigger = EXTI_Trigger_Rising; 

        EXTI_initstructure.EXTI_LineCmd = ENABLE;

        

        EXTI_Init(&EXTI_initstructure);

        EXTI->EMR &= ~(1 << 11); //先关掉外部中断触发

        EXTI->IMR &= ~(1 << 11);

        EXTI->EMR &= ~(1 << 9);EXTI->EMR &= ~(1 << 10);EXTI->EMR &= ~(1 << 12);

        EXTI->IMR &= ~(1 << 9);EXTI->IMR &= ~(1 << 10);EXTI->IMR &= ~(1 << 12);        

        

        /* NVIC配置 */

        NVIC_InitStructure.NVIC_IRQChannel = EXTI15_10_IRQn;

        NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x00;

        NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x00;

        NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;

        NVIC_Init(&NVIC_InitStructure);

        

        NVIC_InitStructure.NVIC_IRQChannel = EXTI9_5_IRQn;

        NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x01;

        NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x00;

        NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;

        NVIC_Init(&NVIC_InitStructure);

 EXTI_InitTypeDef EXTI_InitStructure;

        NVIC_InitTypeDef NVIC_InitStructure;

        

        /* 外部中断配置 */

        EXTI_DeInit(); 

        EXTI_InitStructure.EXTI_Line = EXTI_Line17;

        EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt; 

        EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising;

        EXTI_InitStructure.EXTI_LineCmd = ENABLE;

        EXTI_Init(&EXTI_InitStructure);

        EXTI->EMR &= ~(1 << 17); //先关掉外部中断触发

        EXTI->IMR &= ~(1 << 17);

        

        

        NVIC_InitStructure.NVIC_IRQChannel = RTCAlarm_IRQn;

        NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x02;

        NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x00;

        NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;

        NVIC_Init(&NVIC_InitStructure);