void setup() {
  Serial.end();
  Serial.begin(115200);
  pinMode(12, OUTPUT);
  pinMode(22, OUTPUT);
  pinMode(17,INPUT);
  pinMode(16, INPUT);
}

void loop() {
  int button_G = digitalRead(17) ;
  int button_Y = digitalRead(16) ;

 Serial.print("Y : ");
  Serial.print(button_Y);
   Serial.print(" G : ");
    Serial.println(button_G);
  if (button_G == 1){
    digitalWrite(22, HIGH);
    digitalWrite(12, LOW);
  }
  else if (button_Y == 1) {
    digitalWrite(22, LOW);
     digitalWrite(12,HIGH);
  }
  else{
    digitalWrite(22, LOW);
    digitalWrite(12, LOW);

  }
  delay(1000);
}