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

int DHTPin = A0;
int DHTType = DHT22;

DHT dht (DHTPin, DHTType);

LiquidCrystal_I2C lcd(0x27, 16, 2);

const uint8_t x = 4;
const uint8_t y = 4;

uint8_t pinBaris[x] = {9,8,7,6};
uint8_t pinKolom[y] = {5,4,3,2};

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

Keypad k = Keypad(makeKeymap(keys),pinBaris,pinKolom,x,y);
String PINTersimpan = "2109";
String PINTerinput = "";
bool kesesuaianPIN = false;

void SelamatDatang(){
lcd.clear();
lcd.setCursor(0,0);
lcd.print("WELLCOME TO EBT");
lcd.setCursor(0,1);
lcd.print("PIN:");
}

void setup() {
  Serial.begin (115200);
  dht.begin();
  lcd.init();
  lcd.backlight();
  SelamatDatang();
  
  while(!kesesuaianPIN){
    char bacaKey = k.getKey();
    if (bacaKey != NO_KEY){
      if(bacaKey == 'D'){
        if(PINTersimpan == PINTerinput){
          kesesuaianPIN = true;
        }
        PINTerinput = "";
        SelamatDatang();
      }else {
        PINTerinput = PINTerinput + bacaKey;
        Serial.print(bacaKey);
        lcd.print(bacaKey);}  
    }
 }
}

void loop() {
  float t = dht.readTemperature();
  float h = dht.readHumidity();

  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("Temp:" +String(t)+ "'C");
  lcd.setCursor(0,1);
  lcd.print("Humid:" +String(h)+ "%");
  delay(400);  

}