-// /*
-// *******************************************************************************
-// * Copyright (c) 2021 by M5Stack
-// *                  Equipped with M5Tough sample source code
-// *                          配套  M5Tough 示例源代码
-// * Visit the website for more information：https://docs.m5stack.com/en/core/tough
-// * 获取更多资料请访问：https://docs.m5stack.com/zh_CN/core/tough
-// *
-// * describe：Hello World
-// * date：2021/7/21
-// *******************************************************************************
+/*
+*******************************************************************************
+* Copyright (c) 2021 by M5Stack
+*                  Equipped with M5Core sample source code
+*                          配套  M5Core 示例源代码
+* Visit the website 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：Finger Unit example
+* date：2021/10/28
+*******************************************************************************
+Description: FINGER UNIT use case: Press the left button to enter the fingerprint entry mode. Press the middle button to enter the fingerprint identification mode，Right click to delete all saved users
+FINGER UNIT 使用案例按左键进入指纹录入模式，短按中间键进入指纹识别模式，按下右键删除所有保存的用户
+*/
 
 #include <M5Stack.h>
-
 #include "M5_FPC1020A.h"
 
 FingerPrint FP_M;

  uint8_t res1;
  //ButtonA: Add user.  添加用户
  if(M5.BtnA.wasPressed()){
    
  
    M5.Lcd.fillRect(0, 0, 320, 200, BLACK);
    Serial.println("Start Fingerprint Typing");
    Serial.println("Put Your Finger on the sensor");

    M5.Lcd.println("Put Your Finger on the sensor");
    M5.Lcd.println("wating....");

    res1 = FP_M.fpm_addUser(22,1);  //(user_num, userPermission)
    if(res1 == ACK_SUCCESS){
      M5.Lcd.println("Success");
      Serial.println("Success");
