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


#define  I2C_ADDR 0x27
#define  LCD_COLUMNS 20
#define  LCD_ROWS 4

int pot = A0;


LiquidCrystal_I2C lcd(I2C_ADDR, LCD_COLUMNS, LCD_ROWS);
DHT dht(2, DHT22);

void setup() {
  pinMode(pot, INPUT);

  lcd.init();
  lcd.backlight();

  dht.begin();
  /*
  lcd.print("ahoj");

  lcd.print("cau");

  lcd.setCursor(10,1);
  lcd.print("10 1");
  */

  Serial.begin(9600);
}

void loop() {
  // put your main code here, to run repeatedly:

  float temperature = dht.readTemperature();
  float humidity = dht.readHumidity();

  Serial.println(humidity);
  lcd.setCursor(0, 0);
  lcd.print(temperature);
  lcd.print("C");

  lcd.setCursor(14, 0);
  lcd.print(humidity);
  lcd.print("%");





  int potValue = analogRead(pot);
  int mPotValue = map(potValue, 0, 1023, 0, 80);

  if(mPotValue <= 20){
    lcd.setCursor(mPotValue, 0);
    lcd.cursor();
  }else if(mPotValue > 20 && mPotValue<=40){
    lcd.setCursor(mPotValue -20, 1);
  }else if(mPotValue > 40 && mPotValue<=60){
    lcd.setCursor(mPotValue -40, 2);
  }else if(mPotValue > 60 ){
    lcd.setCursor(mPotValue -60, 3);
  }
  lcd.cursor();
}