/**
   Simon Game for Arduino with Score display

   Copyright (C) 2022, Uri Shaked

   Released under the MIT License.
*/


/**
   Set up the Arduino board and initialize Serial communication
*/
void setup() {
//执行一次硬件的配置（初始化程序）
//需要有
//输出：LED，蜂鸣器
//输出带时序：74HC595
//输入：按键1--pin5
//2-pin4
//3-pin3
//4-pin2
  pinMode(2, INPUT_PULLUP);
  pinMode(3, INPUT_PULLUP);
  pinMode(4, INPUT_PULLUP);
  pinMode(5, INPUT_PULLUP);

//LED 配置
  pinMode(9, OUTPUT);
  pinMode(10, OUTPUT);
  pinMode(11, OUTPUT);
  pinMode(12, OUTPUT);
}

int keyPins[] = {2,3,5,4};
int ledPins[]={9,10,12,11};
int buttonState[]={0,0,0,0};
int keyFlag[] = {0,0,0,0};

void loop() {
  //主程序，主循环  
  //独立按键控制对应灯的亮灭
  //Y,B,R,G
  for(int i=0;i<4;i++){
    buttonState[i] = digitalRead(keyPins[i]);//step1 检测
    //....设置keyFlag
    if(buttonState[i]==0){
      //对于上拉电阻的情况，检测低电平表示按键按下      
      //等待按键释放
      while(digitalRead(keyPins[i])==0) {}
      keyFlag[i] = 1 - keyFlag[i];//两种状态的写法
    }
    if(keyFlag[i]==0){//step2 判断    
      digitalWrite(ledPins[i], HIGH);
    }
    else{
      digitalWrite(ledPins[i], LOW);
    }
  }

  delay(20);

 




  //   for(int i=0 ;i<4;i++){
  //   digitalWrite(ledPins[i], HIGH);
  //   delay(500);//延时，保持状态
  // }
  //    for(int i=0 ;i<4;i++){
  //   digitalWrite(ledPins[3-i], LOW);
  //   delay(500);//延时，保持状态
  // }

  // digitalWrite(10, HIGH);
  // delay(500);
  // digitalWrite(10, LOW);


  // digitalWrite(11, HIGH);
  // delay(500);
  // digitalWrite(11, LOW);

  //  digitalWrite(12, HIGH);
  // delay(500);
  // digitalWrite(12, LOW);

}