#include <Wire.h>
#include <LiquidCrystal.h>
#include <Bounce2.h>

LiquidCrystal lcd(2, 3, 4, 5, 6, 7); //Arduino pins to lcd

const int ledRedPin = 11;
const int ledGreenPin = 12;
const int buttonStartStopPin = A0;
const int buttonResetPin = A1;
const int buzzerPin = 13;

Bounce buttonStartStop = Bounce(); // Tombol debounce object
Bounce buttonReset = Bounce(); // Tombol debounce object

bool isRunning = false;
unsigned long startTime = 0;
unsigned long elapsedTime = 0;

void setup() {
  lcd.begin(16, 2);
  lcd.clear();
  lcd.setCursor(3, 0);
  lcd.print("INDRAROCK");
  lcd.setCursor (0,1);
  lcd.print("  AAIPSC Timer   ");
  delay(1500); // Tampilkan "JUDUL" selama 1,5 detik
  lcd.clear();

lcd.setCursor(3, 0);
  lcd.print("Press Start");
delay(2000);// Tampilkan "Press Start" selama 2 detik


  pinMode(ledRedPin, OUTPUT);
  pinMode(ledGreenPin, OUTPUT);
  pinMode(buttonStartStopPin, INPUT_PULLUP);
  pinMode(buttonResetPin, INPUT_PULLUP);
  pinMode(buzzerPin, OUTPUT);

  buttonStartStop.attach(buttonStartStopPin);
  buttonStartStop.interval(10);
  
  buttonReset.attach(buttonResetPin);
  buttonReset.interval(10);
  
  updatelcd();
}

void loop() {
  buttonStartStop.update();
  buttonReset.update();
  
  if (buttonStartStop.fell()) {
    if (!isRunning) {
      isRunning = true;
      startTime = millis() - elapsedTime;
      digitalWrite(ledRedPin, LOW);
      digitalWrite(ledGreenPin, HIGH);

 // Nada START
      tone(buzzerPin, 659, 50);delay(130);
      tone(buzzerPin, 659, 50);delay(230);
      tone(buzzerPin, 659, 50);delay(230);
      tone(buzzerPin, 523, 50);delay(130);
      tone(buzzerPin, 659, 50);delay(230);
      tone(buzzerPin, 784, 50);delay(100);
    } else {
      isRunning = false;
      elapsedTime = millis() - startTime;
      digitalWrite(ledGreenPin, LOW);
      digitalWrite(ledRedPin, HIGH);
  
    }
  }

  if (buttonReset.fell()) {
    if (!isRunning) {
      elapsedTime = 0;
      updatelcd();
      digitalWrite(ledRedPin, HIGH);
      digitalWrite(ledGreenPin, LOW);
      
    tone(buzzerPin, 700, 100);  delay(80);
    tone(buzzerPin, 300, 100);  delay(80);
    tone(buzzerPin, 500, 100);  delay(80);
    tone(buzzerPin, 700, 100);  delay(80);
    tone(buzzerPin, 300, 100);  delay(80);
    tone(buzzerPin, 500, 100);  delay(80);
    tone(buzzerPin, 700, 100);  delay(80);
    tone(buzzerPin, 300, 100);  delay(80);
    tone(buzzerPin, 500, 100);  delay(100);

      noTone(buzzerPin);
    }
  }
  
  if (isRunning) {
    elapsedTime = millis() - startTime;
    updatelcd();
  }
}

void updatelcd() {
  lcd.clear();
  int minutes = (elapsedTime / 60000) % 60;
  int seconds = (elapsedTime / 1000) % 60;
  int microseconds = elapsedTime % 1000;
  
  lcd.setCursor(2, 0);
  lcd.print("Run : ");
  lcd.print(minutes);
  lcd.print(":");
  if (seconds < 10) lcd.print("0");
  lcd.print(seconds);
  
  lcd.setCursor(2, 10);
  lcd.print("    : ");
  lcd.print(microseconds);
  lcd.clear();
}