#define RED 18
#define YELLOW 16

#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27,16,2);  // set the LCD address to 0x27 for a 16 chars and 2 line display

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
  Serial.println("Blinking LED example");
  pinMode(RED, OUTPUT);
  pinMode(YELLOW, OUTPUT);
  
  // LiquidCrystal setup
  lcd.init();                      // initialize the lcd 
  // Print a message to the LCD.
  lcd.backlight();
  lcd.setCursor(3,0);
  lcd.print("Hello, world!");
  lcd.setCursor(2,1);
  lcd.print("Ywrobot Arduino!");
   lcd.setCursor(0,2);
  lcd.print("Arduino LCM IIC 2004");
   lcd.setCursor(2,3);
  lcd.print("Power By Ec-yuan!");

}

byte brojac = 0;

void loop() {
  ledLoop();
  // radi nešto drugo...
  brojac++;
  //if (brojac == 0) {
    lcd.setCursor(0,0);
    lcd.print("   ");
  //}
  lcd.setCursor(0,0);
  lcd.print(brojac);
}


void ledLoop() {
  static bool stanje = false;

  static unsigned long mils = millis();
  if (millis() - mils < 1000)
    return;
  mils = millis();

  stanje = !stanje;
  if (stanje) {
    digitalWrite(RED, HIGH);
    digitalWrite(YELLOW, LOW);
  } else {
    digitalWrite(RED, LOW);
    digitalWrite(YELLOW, HIGH);
  }
}