#include <Keypad.h> 

const byte ROWS = 4;
const byte COLS = 3;

char keys[ROWS][COLS] = {
  {'1', '2', '3'},
  {'4', '5', '6'},
  {'7', '8', '9'},
  {'*', '0', '#'}
};

byte rowPins[ROWS] = {5, 4, 3, 2};
byte colPins[COLS] = {8, 7, 6};

Keypad keypad = Keypad(makeKeymap(keys), rowPins, colPins, ROWS, COLS); 

byte ledPin = 13;
boolean blink = false;

void setup() {
  Serial.begin(9600);
  pinMode(ledPin, OUTPUT);
  digitalWrite(ledPin, HIGH);
  keypad.addEventListener(keypadEvent);
}

void loop() {
  char key = keypad.getKey();
  if (key) {
    Serial.println(key);
    if (blink) {
      digitalWrite(ledPin, !digitalRead(ledPin));
      delay(100);
    }
    // Mengatur LED berdasarkan tombol yang ditekan
    switch(key) {
      case '1':
        digitalWrite(ledPin, HIGH);
        break;
      case '2':
        digitalWrite(ledPin, LOW);
        break;
      // Tambahkan case untuk tombol-tombol lainnya jika diperlukan
    }
  }
}

void keypadEvent(KeypadEvent key) {
  switch (keypad.getState()) {
    case PRESSED: 
      switch (key) { 
        case '*':
          digitalWrite(ledPin, !digitalRead(ledPin));
          break;
        case '#':
          blink = true;
          break;
      }
      break;
    case RELEASED:
      switch (key) {
        case '#':
          blink = false;
          break;
      }
      break;
  }
}