//ElvaRizki
//12 tkj 2

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

LiquidCrystal_I2C lcd(0x27,16,2);  

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

byte rowPins[BARIS] = {19,18,5,4}; //Sesuaikan PIN pada Keypad-ESP32
byte colPins[KOLOM] = {2,15,12,14}; //Sesuaikan PIN pada Keypad-ESP32
Keypad keypad = Keypad( makeKeymap(keys), rowPins, colPins, BARIS, KOLOM);

void setup() 
{
 lcd.init();                      
 lcd.backlight();
 lcd.setCursor(0,0);
}

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

  if (key != NO_KEY)
  {
    lcd.print(key);
  }
}