/*
*******************************************************************************
*Copyright (c) 2022 by M5Stack
*                  Equipped with M5Core sample source code
*                          配套  M5Core 示例源代码
* Visit for more information: https://docs.m5stack.com/en/core/gray
* 获取更多资料请访问: https://docs.m5stack.com/zh_CN/core/gray
*
* Describe: Power Management Example  电源管理
* Date: 2021/7/21
*******************************************************************************
*/
#include <M5Stack.h>

/* After M5Core is started or reset
the program in the setUp () function will be run, and this part will only be run
once. 在 M5Core
启动或者复位后，即会开始执行setup()函数中的程序，该部分只会执行一次。 */
void setup() {
    M5.begin();             // Init M5Core.  初始化 M5Core
    M5.Power.begin();       // Init Power module.  初始化电源
    M5.Lcd.setTextSize(2);  // Set the font size.  设置字体大小
    M5.Lcd.print(
        "After 5 seconds, the program entered light sleep\n\n");  // Screen
                                                                  // printingformatted
                                                                  // string.
                                                                  // 输出格式化字符串
    delay(5000);
    M5.Power.lightSleep(
        SLEEP_SEC(5));  // Sleep for 5 seconds, then continue the program.
                        // 睡眠5秒,结束后程序继续往下进行
    M5.Lcd.print(
        "press ButtonA: shutdown,  use power button to turn  back on");  // Screen
                                                                         // printingformatted
                                                                         // string.
                                                                         // 输出格式化字符串
}

/* After the program in setup() runs, it runs the program in loop()
The loop() function is an infinite loop in which the program runs repeatedly
在setup()函数中的程序执行完后，会接着执行loop()函数中的程序
loop()函数是一个死循环，其中的程序会不断的重复运行 */
void loop() {
    M5.update();  // Read the press state of the key.  读取按键 A, B, C 的状态
    if (M5.BtnA.wasPressed()) {  // Check if the key is pressed. 如果按键A被按下
        M5.Power.powerOFF();  // Turn off power.  关闭电源
    }
}