#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include "DHT.h"
#include "RTClib.h"

#define DHTPIN 2       // Pin data sensor DHT22
#define DHTTYPE DHT22  // Tipe sensor DHT

DHT dht(DHTPIN, DHTTYPE);
LiquidCrystal_I2C lcd(0x27, 16, 2); // Alamat I2C LCD (umumnya 0x27 atau 0x3F)
RTC_DS3231 rtc;

void setup() {
  Serial.begin(9600);
  dht.begin();
  lcd.init();
  lcd.backlight();

  if (!rtc.begin()) {
    Serial.println("RTC tidak ditemukan!");
    while (1);
  }

  if (rtc.lostPower()) {
    Serial.println("RTC kehilangan daya, set waktu sekarang!");
    // Atur waktu sesuai saat upload (hanya sekali, lalu bisa dikomen)
    rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));
  }
}

void loop() {
  // Baca suhu & kelembaban
  float h = dht.readHumidity();
  float t = dht.readTemperature();

  // Baca waktu dari RTC
  DateTime now = rtc.now();

  // Tampilkan ke Serial Monitor
  Serial.print("Suhu: "); Serial.print(t); Serial.print(" °C ");
  Serial.print("Kelembaban: "); Serial.print(h); Serial.println(" %");
  Serial.print(now.year(), DEC); Serial.print('/');
  Serial.print(now.month(), DEC); Serial.print('/');
  Serial.print(now.day(), DEC); Serial.print(' ');
  Serial.print(now.hour(), DEC); Serial.print(':');
  Serial.print(now.minute(), DEC); Serial.print(':');
  Serial.println(now.second(), DEC);

  // Tampilkan ke LCD
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("T:"); lcd.print(t); lcd.print("C ");
  lcd.print("H:"); lcd.print(h); lcd.print("%");

  lcd.setCursor(0,1);
  lcd.print(now.year()); lcd.print("/");
  if (now.month() < 10) lcd.print("0");
  lcd.print(now.month()); lcd.print("/");
  if (now.day() < 10) lcd.print("0");
  lcd.print(now.day());

  lcd.print(" ");
  if (now.hour() < 10) lcd.print("0");
  lcd.print(now.hour()); lcd.print(":");
  if (now.minute() < 10) lcd.print("0");
  lcd.print(now.minute()); lcd.print(":");
  if (now.second() < 10) lcd.print("0");
  lcd.print(now.second());

  delay(1000);
}