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

LiquidCrystal_I2C lcd(0x27, 16, 2);
const byte ligne = 4;
const byte colone = 4;

byte ligneporte[ligne] = {9, 8, 7, 6};
byte coloneporte[colone] = {5, 4, 3, 2};

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

Keypad keypad = Keypad(makeKeymap(clavier), ligneporte, coloneporte, ligne, colone);
Servo myservo;

int pos = 0;
int i = 0;
String password = "0000";
String code;

void setup() {
   Wire.begin();
  lcd.begin(16, 2);
  myservo.attach(10);

}

void loop() {
  do{
    char key = keypad.getKey();
     if (key) {
     code=code+key;
     i++;
  }
  }while(i<4);
  if(code==password){
     for (pos = 90; pos >= 0; pos--) {
      myservo.write(pos);
      delay(10);
     }
     delay(2000);
      for (pos =0; pos<90; pos++) {
      myservo.write(pos);
      delay(10);
    }
    
  }
  else{
       
      i=0;
      code="";
  }

}