#include "DHT.h"
#define DHTPIN 2
#define DHTTYPE DHT11
#include <Wire.h>
#include <LiquidCrystal_I2C.h>

DHT dht(DHTPIN, DHTTYPE);
LiquidCrystal_I2C lcd(0x27, 16, 2);

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

  delay(2000);
  lcd.setCursor(0, 0);
  lcd.print("Initiating...");
  delay(5000);
  lcd.clear();
}

void loop() {
  float humidity = dht.readHumidity();
  float temperature = dht.readTemperature();

  if (isnan(humidity) || isnan(temperature)) {
    Serial.println("Failed to read from DHT sensor!");
    return;
  }

  Serial.print("Temperature: ");
  Serial.print(temperature, 1);
  Serial.print(" *C, ");
  Serial.print("Humidity: ");
  Serial.print((int)humidity);
  Serial.println(" %");

  lcd.clear();
  delay(10);  // LCD 초기화 후 안정화 딜레이

  lcd.setCursor(0, 0);
  lcd.print("T: ");
  lcd.print(temperature, 1);
  lcd.print("C");

  lcd.setCursor(0, 1);
  lcd.print("H: ");
  lcd.print((int)humidity);
  lcd.print("%");

  delay(2000);  // 샘플링 주기
}