1、功能说明

    1、SLEEP模式的进入和退出。

2、使用环境

    软件开发环境：KEIL MDK-ARM V5.25
    硬件环境：
        1、基于评估板N32A455VEL7-EVB V1.0开发
        2、MCU：N32A455VEL7

3、使用说明
    
    系统配置；
        1、时钟源：HSE+PLL
        2、时钟频率：144MHz
        3、唤醒源：PA0
        4、指示灯：PB10

    使用方法：
        在KEIL下编译后烧录到评估板，上电后，PB10控制的指示灯灭。每隔一会按下唤醒按键PA0，
            PB10控制的指示灯电平都会翻转一次。

4、注意事项
    无


1. Function description

     1. Enter and exit the SLEEP mode.

2. Use environment

     Software development environment: KEIL MDK-ARM V5.25
     Hardware environment:
         1. Developed based on the evaluation board N32A455VEL7-EVB V1.0
         2. MCU: N32A455VEL7

3. Instructions for use
    
     System Configuration;
         1. Clock source: HSE+PLL
         2. Clock frequency: 144MHz
         3. Wake-up source: PA0
         4. Indicator light: PB10

     Instructions:
         After compiling under KEIL and burning it to the evaluation board, after power-on, the indicator light controlled by PB10 is off. Press the wake-up button PA0 every once in a while,
             The level of the indicator lights controlled by the PB10 will flip once.

4. Matters needing attention
     none

