#include <LiquidCrystal_I2C.h>;
LiquidCrystal_I2C lcd(0x27,16,2);
int tombol=13;
int merah=8;
int kuning=9;
int hijau=10;
int tekan;
int tekanan;
void setup() {
  //program masukan dan keluaran:
pinMode(13, INPUT);
pinMode(10, OUTPUT);
pinMode(9, OUTPUT);
pinMode(8, OUTPUT);
lcd.init();
lcd.backlight();
}

void lmerah() {
  digitalWrite(8, HIGH);
  digitalWrite(9, LOW);
  digitalWrite(10, LOW);
  tone(12,262);
  lcd.clear();
  lcd.setCursor(2,0);
  lcd.print("Lampu Merah");
  lcd.setCursor(4,1);
  lcd.print("Menyala");
}
void lkuning() {
  digitalWrite(8, LOW);
  digitalWrite(9, HIGH);
  digitalWrite(10, LOW);
  tone(12,294);
  lcd.clear();
  lcd.setCursor(2,0);
  lcd.print("Lampu Kuning");
  lcd.setCursor(4,1);
  lcd.print("Menyala");
}
void lhijau() {
  digitalWrite(8, LOW);
  digitalWrite(9, LOW);
  digitalWrite(10, HIGH);
  tone(12,330);
  lcd.clear();
  lcd.setCursor(2,0);
  lcd.print("Lampu Hijau");
  lcd.setCursor(4,1);
  lcd.print("Menyala");
}
void lmati() {
  digitalWrite(10, LOW);
  digitalWrite(9, LOW);
  digitalWrite(8, LOW);
  noTone(12);
  lcd.clear();
  tekanan=0;

}
void loop() {
  //pencet button ke berapa kali
tekan=digitalRead(13);
if (tekan==1){
  tekanan++;
  delay(300);
  if (tekanan==1){
    lmerah();
  }else if (tekanan==2){
    lkuning();
  }else if(tekanan==3){
    lhijau();
  }else if(tekanan==4){
    lmati();
  }
}
}