#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27, 16, 2); // set LDC address

void setup()
{
  pinMode(6,OUTPUT);
  analogWrite(6, 255);      //LCD brightness (does not work in WOKWI simulation)
  delay(250);

  lcd.init();               // initialize the lcd
  lcd.backlight();          // backlight ON

  lcd.setCursor(3, 0);      // cursor on column 3, row 0
  lcd.print("ARDUINO UNO"); // print on display

  lcd.setCursor(4, 1);      // cursor on column 4, row 1
  lcd.print("Wellcome");    // print on display
  
  delay(3000);
}

void loop(){

  obrazovka1();
  delay(2000);

  obrazovka2();
  delay(2000);
}


//******************** funkce ********************//
void obrazovka1()
{
  lcd.clear();
  lcd.setCursor(4, 0);
  analogWrite(6, 255);
  lcd.print("LCD I2C 1");
  lcd.setCursor(2, 1);
  lcd.print("First screen");
}

void obrazovka2()
{
  lcd.clear();
  lcd.setCursor(4, 0);
  analogWrite(6, 100);
  lcd.print("LCD I2C 2");
  lcd.setCursor(2, 1);
  lcd.print("Second screen");
}