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

#define DHTPIN 2  
#define DHTTYPE DHT22 

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

void setup() {
  dht.begin();
  lcd.init();                      
  lcd.backlight();                
  lcd.setCursor(0, 0);
  lcd.print("Temp:  Humid:");     
}

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

  
  if (isnan(humidity) || isnan(temperature)) {
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("Erreur de lecture");
    delay(2000);
    return;
  }

 
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Temp: " + String(temperature, 1) + "C");
  lcd.setCursor(0, 1);
  lcd.print("Humid: " + String(humidity, 1) + "%");

  delay(2000); 
}