#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27,16,2);

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);

  lcd.init();
  lcd.backlight();
  pinMode(32, INPUT_PULLUP);
  pinMode(33, INPUT_PULLUP);
}

bool state1 = true;
bool state2 = true;

int rozsah = 10;

void loop() {
  if(digitalRead(33) == LOW && state1 == true){
        lcd.clear();
    lcd.setCursor(0,1);
    rozsah++;
    lcd.print("Rozsah: 0 - " + String(rozsah));
    state1 = false;
  }

  if(digitalRead(33) == HIGH && state1 == false){
    state1 = true;
  }

  if(digitalRead(32) == LOW && state2 == true){
    lcd.clear();
    lcd.setCursor(0,1);
    rozsah--;
    lcd.print("Rozsah: 0 - " + String(rozsah));
    state2 = false;
  }

  if(digitalRead(32) == HIGH && state2 == false){
    state2 = true;
  }
  
  int h = analogRead(4);
  int mapa = map(h,0,4095,0,rozsah);
  
  lcd.print(" ");
  lcd.home();
  lcd.print(mapa);

}