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

#define dhtPin 2
#define DHTTYPE DHT22

DHT_Unified dht(dhtPin, DHTTYPE);

LiquidCrystal_I2C lcd(0x27,20,4);


int counter = 0;

void setup()
{
  lcd.init();                  
  lcd.backlight();
  lcd.setCursor(3,0);
  lcd.print("Hello, world!");
  delay(2000);
  lcd.clear();
  lcd.setCursor(4,0);
  lcd.print("Information!");
  delay(2000);
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("DHT22");
  dht.begin();
  sensor_t sensor;
  dht.temperature().getSensor(&sensor);
  dht.humidity().getSensor(&sensor);
}


void loop()
{

  delay(100);

  sensors_event_t event;
  dht.temperature().getEvent(&event);
  if (!isnan(event.temperature)) {
      lcd.setCursor(0,1);
      lcd.print(event.temperature);
      lcd.print(F("\xdf"));
      lcd.print(F("C"));
  }
  dht.humidity().getEvent(&event);
  if (!isnan(event.relative_humidity)) {
      lcd.setCursor(0,2);
      lcd.print(event.relative_humidity);
      lcd.print(F("%"));
  }
}