#include <Keypad.h>
#include <Servo.h>

const int buzzerPin = 10;
const int servoPin = 9;

Servo myServo;

const int ROW_NUM    = 4; // empat baris
const int COLUMN_NUM = 4; // empat kolom

char keys[ROW_NUM][COLUMN_NUM] = {
  {'1','2','3','A'},
  {'4','5','6','B'},
  {'7','8','9','C'},
  {'*','0','#','D'}
};

byte pin_rows[ROW_NUM] = {5, 4, 3, 2}; // menghubungkan pin keypad ke pin digital ESP32
byte pin_column[COLUMN_NUM] = {9, 8, 7, 6};

Keypad keypad = Keypad(makeKeymap(keys), pin_rows, pin_column, ROW_NUM, COLUMN_NUM);
String enteredPin = "";

void setup() {
  Serial.begin(115200);
  myServo.attach(servoPin);
  pinMode(buzzerPin, OUTPUT);
}

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

  if (key) {
    if (key != '#') {
      enteredPin += key;
      tone(buzzerPin, 1000);
      delay(100);
      noTone(buzzerPin);
    } else {
      if (enteredPin == "1234") { // Ganti dengan PIN yang Anda inginkan
        unlockDoor();
      } else {
        Serial.println("PIN Salah");
        enteredPin = "";
      }
    }
  }
}

void unlockDoor() {
  Serial.println("Pintu Terbuka");
  myServo.write(90);
  delay(1000); // Tunggu selama 1 detik
  myServo.write(0);
  enteredPin = ""; // Bersihkan PIN yang dimasukkan
}