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

LiquidCrystal_I2C lcd(0x27, 16, 2);
#define DHTPIN 7
#define DHTTYPE 22

DHT dht(DHTPIN, DHTTYPE);
String slovo = "Teplota", slovicko = "Vlhkost";
unsigned long previousMillis = 0;

byte stupen[] = {
  B00111,
  B00101,
  B00111,
  B00000,
  B00000,
  B00000,
  B00000,
  B00000
};

void setup() {
  dht.begin();
  lcd.init();
  Serial.begin(115200);
  lcd.createChar(0, stupen);
  lcd.backlight();
  lcd.createChar(0, stupen);
  lcd.clear();
}

float tep() {
  return dht.readTemperature();
}

float vlh() {
  return dht.readHumidity();
}

void loop() {
  float teplota = tep();
  float vlhkost = vlh();

  lcd.setCursor(0, 0);
  lcd.print(slovo);

  lcd.setCursor(16 - String(teplota, 1).length() - 2, 0);
  lcd.print(String(teplota, 1));
  lcd.write(0);
  lcd.print("C");

  lcd.setCursor(0, 1);
  lcd.print(slovicko);

  lcd.setCursor(16 - String(vlhkost, 1).length() - 1, 1);
  lcd.print(String(vlhkost, 1));
  lcd.print("%");

lcd.autoscroll();
delay(20)
  unsigned long currentMillis = millis();

  if (currentMillis - previousMillis >= 2000) {
    previousMillis = currentMillis;
    lcd.clear();

}
}