// define the pins for the rotary encoder
const int pinA = 2;
const int pinB = 3;
const int sw = 4;



// define the current and previous state of the rotary encoder pins
int currA = 0;
int currB = 0;
int prevA = 0;
int prevB = 0;
int prevButton = 1;
int currButton = 0;

// define the current and previous positions of the rotary encoder
int position = 0;
int prevPosition = 0;



void setup() {
  // set the pin modes for the rotary encoder
  pinMode(pinA, INPUT_PULLUP);
  pinMode(pinB, INPUT_PULLUP);
  pinMode(sw, INPUT_PULLUP);

  // enable pull-up resistors on the rotary encoder pins
 // digitalWrite(pinA, HIGH);
 // digitalWrite(pinB, HIGH);

  // initialize the serial communication
  Serial.begin(9600);
}

void loop() {
  // read the current state of the rotary encoder
  currA = digitalRead(pinA);
  currB = digitalRead(pinB);


  //read state of button
  currButton = digitalRead(sw);

  // check if the state of pin A has changed
  if (currA != prevA) {
    
    // if pin A has changed, check the state of pin B to determine direction
    if (currA == currB) {
      // clockwise rotation
      position++;
    } else {
      // counter-clockwise rotation
      position--;
    }
  delay(50);
  
    Serial.println(position);
  }


  
  if(currButton == 0 && prevButton == 1){
    Serial.println("button press");
    delay(20);
  }

  prevButton = currButton;


  // update the previous state and position of the rotary encoder
  prevA = currA;
  prevB = currB;
  prevPosition = position;
  
}