#include <Wire.h> 
#include <LiquidCrystal_I2C.h>
#include <RotaryEncoder.h>

#define PIN_IN1 4
#define PIN_IN2 3
int SW = 2;
#define ROTARYSTEPS 0.5
#define ROTARYMIN 7
#define ROTARYMAX 27
int lastPos = -1;
int dikis = 20;

RotaryEncoder encoder(PIN_IN1, PIN_IN2, RotaryEncoder::LatchMode::TWO03);
LiquidCrystal_I2C lcd(0x27,20,4);

void setup(){
  lcd.init();
  lcd.setBacklight(1);
  lcd.print("SimplePollRotatorLCD");
  encoder.setPosition(dikis / ROTARYSTEPS);
}

void loop(){
  encoder.tick();
  int newPos = encoder.getPosition() * ROTARYSTEPS;
  if(newPos < ROTARYMIN){
    encoder.setPosition(ROTARYMIN / ROTARYSTEPS);
    newPos = ROTARYMIN;
  }else if(newPos > ROTARYMAX){
    encoder.setPosition(ROTARYMAX / ROTARYSTEPS);
    newPos = ROTARYMAX;
  }
  if(lastPos != newPos) {
    lcd.clear();
    lcd.setCursor(3,0);
    lcd.print("DiKiS UZUNLUGU");
    lcd.setCursor(0,1);
    lcd.print(newPos);
    lcd.setCursor(2,1);
    lcd.print("cm");
    lastPos = newPos;
  }
  if(digitalRead(SW) == 1){
    lcd.setCursor(5,3);
    lcd.print("KAYDEDILDI");
    newPos = dikis;
    delay(1500);
  }
}