// MCU BASIC: https://www.basic4mcu.com
// DateTime : 2019-12-20 오전 9:10:40
// by Ok-Hyun Park
//
int piezohi=9;  //초록
int piezobye=8; //노랑
int ButtonO=1;  //주황
int ButtonP=2;  //보라
//
int toneshi[] ={261,330,392,523};
int tonesbye[]={523,392,330,261};
int count;
//
void setup(){
  pinMode(ButtonO,INPUT_PULLUP);  pinMode(ButtonP,INPUT_PULLUP);
  Serial.begin(9600);
}
//
void loop(){
  if(digitalRead(ButtonO)==0){   // ButtonO를 먼저 누르면
    count=0;
    while(digitalRead(ButtonP)){ // ButtonP를 기다림
      delay(10);
      if(++count>200)return;     // 2초 이내에 누르지 않으면 빠져나감
    }
    Serial.println("hi");
    for(int i=0;i<4;i++){ tone(piezohi,toneshi[i]); delay(300); noTone(piezohi); delay(300); }
  }
  //--------------------------------------------
  if(digitalRead(ButtonP)==0){   // ButtonP를 먼저 누르면
    count=0;
    while(digitalRead(ButtonO)){ // ButtonO를 기다림
      delay(10);
      if(++count>200)return;     // 2초 이내에 누르지 않으면 빠져나감
    }
    Serial.println("bye");
    for(int i=0;i<4;i++){ tone(piezobye,tonesbye[i]); delay(300); noTone(piezobye); delay(300); }
  }
}