#include <Keypad.h>

const int SEG_A = 2;
const int SEG_B = 3;
const int SEG_C = 4;
const int SEG_D = 5;
const int SEG_E = 6;
const int SEG_F = 7;
const int SEG_G = 8;
const int SEG_DP = 9;

const byte ROWS = 4; // Four rows
const byte COLS = 4; // Four columns

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

byte rowPins[ROWS] = {A0, A1, A2, A3}; // Connect to the row pinouts of the keypad
byte colPins[COLS] = {10, 11, 12, 13}; // Connect to the column pinouts of the keypad

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

void setup() {
  pinMode(SEG_A, OUTPUT);
  pinMode(SEG_B, OUTPUT);
  pinMode(SEG_C, OUTPUT);
  pinMode(SEG_D, OUTPUT);
  pinMode(SEG_E, OUTPUT);
  pinMode(SEG_F, OUTPUT);
  pinMode(SEG_G, OUTPUT);
  pinMode(SEG_DP, OUTPUT);

  // Matikan semua segment pada awal
  turnOff();
}

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

void displayNumber(char num) {
  turnOff(); // Matikan semua segment sebelum menampilkan yang baru
  switch (num) {
    case '0':
      digitalWrite(SEG_A, LOW);
      digitalWrite(SEG_B, LOW);
      digitalWrite(SEG_C, LOW);
      digitalWrite(SEG_D, LOW);
      digitalWrite(SEG_E, LOW);
      digitalWrite(SEG_F, LOW);
      digitalWrite(SEG_G, HIGH);
      break;
    case '1':
      digitalWrite(SEG_A, HIGH);
      digitalWrite(SEG_B, LOW);
      digitalWrite(SEG_C, LOW);
      digitalWrite(SEG_D, HIGH);
      digitalWrite(SEG_E, HIGH);
      digitalWrite(SEG_F, HIGH);
      digitalWrite(SEG_G, HIGH);
      break;
    case '2':
      digitalWrite(SEG_A, LOW);
      digitalWrite(SEG_B, LOW);
      digitalWrite(SEG_C, HIGH);
      digitalWrite(SEG_D, LOW);
      digitalWrite(SEG_E, LOW);
      digitalWrite(SEG_F, HIGH);
      digitalWrite(SEG_G, LOW);
      break;
    case '3':
      digitalWrite(SEG_A, LOW);
      digitalWrite(SEG_B, LOW);
      digitalWrite(SEG_C, LOW);
      digitalWrite(SEG_D, LOW);
      digitalWrite(SEG_E, HIGH);
      digitalWrite(SEG_F, HIGH);
      digitalWrite(SEG_G, LOW);
      break;
    case '4':
      digitalWrite(SEG_A, HIGH);
      digitalWrite(SEG_B, LOW);
      digitalWrite(SEG_C, LOW);
      digitalWrite(SEG_D, HIGH);
      digitalWrite(SEG_E, HIGH);
      digitalWrite(SEG_F, LOW);
      digitalWrite(SEG_G, LOW);
      break;
    case '5':
      digitalWrite(SEG_A, LOW);
      digitalWrite(SEG_B, HIGH);
      digitalWrite(SEG_C, LOW);
      digitalWrite(SEG_D, LOW);
      digitalWrite(SEG_E, HIGH);
      digitalWrite(SEG_F, LOW);
      digitalWrite(SEG_G, LOW);
      break;
    case '6':
      digitalWrite(SEG_A, LOW);
      digitalWrite(SEG_B, HIGH);
      digitalWrite(SEG_C, LOW);
      digitalWrite(SEG_D, LOW);
      digitalWrite(SEG_E, LOW);
      digitalWrite(SEG_F, LOW);
      digitalWrite(SEG_G, LOW);
      break;
    case '7':
      digitalWrite(SEG_A, LOW);
      digitalWrite(SEG_B, LOW);
      digitalWrite(SEG_C, LOW);
      digitalWrite(SEG_D, HIGH);
      digitalWrite(SEG_E, HIGH);
      digitalWrite(SEG_F, HIGH);
      digitalWrite(SEG_G, HIGH);
      break;
    case '8':
      digitalWrite(SEG_A, LOW);
      digitalWrite(SEG_B, LOW);
      digitalWrite(SEG_C, LOW);
      digitalWrite(SEG_D, LOW);
      digitalWrite(SEG_E, LOW);
      digitalWrite(SEG_F, LOW);
      digitalWrite(SEG_G, LOW);
      break;
    case '9':
      digitalWrite(SEG_A, LOW);
      digitalWrite(SEG_B, LOW);
      digitalWrite(SEG_C, LOW);
      digitalWrite(SEG_D, LOW);
      digitalWrite(SEG_E, HIGH);
      digitalWrite(SEG_F, LOW);
      digitalWrite(SEG_G, LOW);
      break;
    default:
      break;
  }
}

void turnOff() {
  digitalWrite(SEG_A, LOW);
  digitalWrite(SEG_B, LOW);
  digitalWrite(SEG_C, LOW);
  digitalWrite(SEG_D, LOW);
  digitalWrite(SEG_E, LOW);
  digitalWrite(SEG_F, LOW);
  digitalWrite(SEG_G, LOW);
}