//Project Security System dengan Arduino
//Tugas Ke-7 Bootcamp Arduino



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


/* Display */
#define I2C_ADDR    0x27
#define LCD_COLUMNS 16
#define LCD_LINES   2

LiquidCrystal_I2C lcd(I2C_ADDR, LCD_COLUMNS, LCD_LINES);

/* Keypad setup */
const byte KEYPAD_ROWS = 4;
const byte KEYPAD_COLS = 4;
byte rowPins[KEYPAD_ROWS] = {9, 8, 7, 6};
byte colPins[KEYPAD_COLS] = {5, 4, 3, 2};
char keys[KEYPAD_ROWS][KEYPAD_COLS] = {
  {'1', '2', '3', 'A'},
  {'4', '5', '6', 'B'},
  {'7', '8', '9', 'C'},
  {'*', '0', '#', 'D'}
};

Keypad keypad = Keypad(makeKeymap(keys), rowPins, colPins, KEYPAD_ROWS, KEYPAD_COLS);

Servo myservo; 

char key_pressed=0;
int i=0;
char password[4];
char initial_password[4];

#define ledhju 12
 



 //class input data eeprom
void insertData(){

  EEPROM.write(0,12);
  EEPROM.write(1,12);
}

//Class  Buka Kunci
void bukaPintu(int val){
  myservo.write(val);                  // sets the servo position according to the scaled value
  delay(15); 
}



void setup() {
  // put your setup code here, to run once:
  myservo.attach(11);
  bukaPintu(0);

  Serial.begin(9600);
  lcd.init();
  lcd.backlight();  
  lcd.println("Input Password :");  
  delay(1000);
  lcd.setCursor(0, 1);
  insertData();
  bukaPintu(0);
  pinMode(ledhju, OUTPUT);
  

}

void loop() {
  // put your main code here, to run repeatedly:
 String passw = String(EEPROM.read(0)) + String(EEPROM.read(1));
  key_pressed = keypad.getKey();

  if(key_pressed){
    password[i++]=key_pressed;
    lcd.print(key_pressed);
  }

  if(i==4){
    delay(200);
    for(int j=0;j<4;j++)
      initial_password[j]=passw[j];

    if((strncmp(password, initial_password,4)== 0))
    {
      lcd.clear();
      lcd.print("Password Benar");
      bukaPintu(90);
      digitalWrite(ledhju, LOW);      
      delay(5000);
      lcd.setCursor(0,1);
      lcd.clear();
      lcd.print("Enter Password:");
      lcd.setCursor(0,1);
      delay(1000);
      bukaPintu(0);
      i=0;
    }
    else
    {
      lcd.clear();
      lcd.print("Password Salah!");
      digitalWrite(ledhju, HIGH);
      lcd.setCursor(0,1);
      bukaPintu(0);
      delay(1000);
      lcd.clear();
      lcd.print("Enter Password");
      //digitalWrite(ledhju, LOW);
      lcd.setCursor(0,1);
      i=0;
    }
  }
}