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

LiquidCrystal_I2C lcd(0x27, 20, 4);

#define DHTPIN 22
#define DHTTYPE DHT22
#define INTERVAL_GET_DATA 2000

DHT dht(DHTPIN, DHTTYPE);

unsigned long millis_int1 = 0;

void setup() {
  // put your setup code here, to run once:
  dht.begin();
}

void loop() {
  // put your main code here, to run repeatedly:
  if (millis()-millis_int1 < INTERVAL_GET_DATA) {
    int humidity = get_data_humidity();
    int temp = get_data_temp();

    millis_int1 = millis();

    lcd.init();
    lcd.backlight();
    lcd.setCursor(0,0);
    lcd.print("Humidity = ");
    lcd.print(humidity);
    lcd.setCursor(0,1);
    lcd.print("Temp = ");
    lcd.print(temp);
  }
}

int get_data_humidity() {
  int h = dht.readHumidity();
  return h;
}

int get_data_temp() {
  int t = dht.readTemperature();
  return t;
}