#define CLK 26
#define DT 14
#define SEL 27

int a;
int b;
int count;
int lastastate;
int currentastate;

#define DIRECTION_CW 0   // clockwise direction
#define DIRECTION_CCW 1  // counter-clockwise direction

// volatile int counter = 0;
volatile int direction = DIRECTION_CW;
// volatile unsigned long last_time;  // for debouncing
// int prev_counter;

//ezButton button(SW_PIN);  // create ezButton object that attach to pin 7;

void IRAM_ATTR ISR_encoder() {
  if ((millis() - lastastate) < 50)  // debounce time is 50ms
    return;

  if (digitalRead(DT) == HIGH) {
    // the encoder is rotating in counter-clockwise direction => decrease the counter
    count--;
    direction = DIRECTION_CCW;
  } else {
    // the encoder is rotating in clockwise direction => increase the counter
    count++;
    direction = DIRECTION_CW;
  }

  lastastate = millis();
}

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
  pinMode(CLK, INPUT);
  pinMode(DT, INPUT);
  lastastate = millis();
  b = digitalRead(DT);
  count = 0;
  attachInterrupt(digitalPinToInterrupt(CLK), ISR_encoder, RISING);
}

void loop() {
  // digitalWrite(CLOCK, LOW);

  
  // Serial.println("First encoder");
  // Serial.print(a);
  // Serial.print(b);
  // Serial.println();
  // delay(10); // this speeds up the simulation
  
  // digitalWrite(CLOCK, HIGH);
  currentastate = digitalRead(CLK);
  

  if(lastastate != currentastate)
  {
    if(direction == DIRECTION_CW)
    {
      Serial.println("turned once cw");
      Serial.print("Count: ");
      Serial.println(count);
      
    }
    else
    {
      Serial.println("turned once ccw");
      Serial.print("Count: ");
      Serial.println(count);
    }
  }
    lastastate = currentastate;
   delay(10);
 
}