#define CLK 18
#define DT  21

int lastState;


void setup() {
  
  Serial.begin(115200);
  pinMode(CLK, INPUT);
  pinMode(DT, INPUT);
  lastState = digitalRead(CLK);
  Serial.println("Hello, ESP32!");
}

void loop() {
  int currentState = digitalRead(CLK);
  if(currentState != lastState){
    if(digitalRead(DT) != currentState){
      Serial.println("Clockwise");
    }esle{
      Serial.println("Anti-clckwise");
    }
    lastState = currentState;

  }
  
}