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

// Initialisation DHT22
#define DHTPIN 2
#define DHTTYPE DHT22
DHT dht(DHTPIN, DHTTYPE);

// Initialisation LCD I2C
LiquidCrystal_I2C lcd(0x27, 16, 2); // Adresse 0x27 par défaut

// Buzzer
#define BUZZER_PIN 8

void setup() {
  pinMode(BUZZER_PIN, OUTPUT);
  lcd.init();
  lcd.backlight();
  dht.begin();
  lcd.setCursor(0, 0);
  lcd.print("Systeme Pret...");
  delay(2000);
  lcd.clear();
}

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

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

  if (temperature > 20.0) {
    lcd.setCursor(0, 1);
    lcd.print("Temp. elevee !");
    digitalWrite(BUZZER_PIN, HIGH);
  } else {
    lcd.setCursor(0, 1);
    lcd.print("Stable          ");
    digitalWrite(BUZZER_PIN, LOW);
  }

  delay(2000);
}