#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <Keypad.h>

// Konfigurasi LCD I2C
LiquidCrystal_I2C lcd(0x27, 16, 2); // Ganti 0x27 dengan alamat I2C LCD Anda jika berbeda

// Konfigurasi Keypad
const byte ROWS = 4; // Jumlah baris
const byte COLS = 4; // Jumlah kolom
char keys[ROWS][COLS] = {
  {'1', '2', '3', 'A'},
  {'4', '5', '6', 'B'},
  {'7', '8', '9', 'C'},
  {'*', '0', '#', 'D'}
};
byte rowPins[ROWS] = {9, 8, 7, 6};    // Pin baris keypad
byte colPins[COLS] = {A0, A1, A2, A3}; // Pin kolom keypad
Keypad keypad = Keypad(makeKeymap(keys), rowPins, colPins, ROWS, COLS);

// Konfigurasi PIR Sensor, Buzzer, dan LED
const int pirPin = 10;    // Pin PIR Sensor
const int buzzerPin = 11; // Pin Buzzer
const int ledPin = 13;    // Pin LED

bool motionSystemOn = false; // Status sistem gerakan
int motionCount = 0;         // Jumlah gerakan terdeteksi

void setup() {
  pinMode(pirPin, INPUT);
  pinMode(buzzerPin, OUTPUT);
  pinMode(ledPin, OUTPUT);
  lcd.init(); // Inisialisasi LCD I2C
  lcd.backlight();
  lcd.clear();
  lcd.print("Press A to Start");
}

void loop() {
  char key = keypad.getKey();

  // Memeriksa tombol pada keypad
  if (key == 'A') {
    motionSystemOn = true;
    lcd.clear();
    lcd.print("Motion System On");
    digitalWrite(ledPin, HIGH);
    delay(2000);
    lcd.clear();
  } else if (key == 'B') {
    motionSystemOn = false;
    lcd.clear();
    lcd.print("Motion System Off");
    digitalWrite(ledPin, LOW);
    delay(2000);
    lcd.clear();
  }

  // Sistem gerakan aktif
  if (motionSystemOn) {
    int pirState = digitalRead(pirPin);

    if (pirState == HIGH) {
      // Jika ada pergerakan
      digitalWrite(buzzerPin, HIGH);
      digitalWrite(ledPin, LOW);
      motionCount++;
      lcd.setCursor(0, 0);
      lcd.print("Motion Detected ");
      lcd.setCursor(0, 1);
      lcd.print("Count: ");
      lcd.print(motionCount);
      delay(1000); // Delay untuk menghindari pembacaan berulang
    } else {
      // Jika tidak ada pergerakan
      digitalWrite(buzzerPin, LOW);
      digitalWrite(ledPin, HIGH);
      lcd.setCursor(0, 0);
      lcd.print("No Motion      ");
      lcd.setCursor(0, 1);
      lcd.print("Count: ");
      lcd.print(motionCount);
    }
  } else {
    // Sistem gerakan mati
    digitalWrite(buzzerPin, LOW);
    digitalWrite(ledPin, LOW);
    lcd.clear();
    lcd.print("System Disabled");
  }

  delay(200); // Debounce delay
}