//Encoder Wokwi code
#define CLK 2   //OUTPUT A
#define DT 3    //OUTPUT B


int counter = 0;
int currentStateCLK;
int lastStateCLK;
string currentDir = "";


void setup() 
{
  // set encoder pins as inputs
  pinMode(CLK, INPUT);
  pinMode(DT, INPUT);

  // set up serial monitor
  Serial.begin(9600);

  // read the initial state of CLK
  lastStateCLK = digitalRead(CLK);
}

void loop() 
{
  // Read the current state of CLK
  currentStateCLK = digitalRead(CLK);

  //if last and current state of CLK are different, then pulse occurred
  //React to only 1 state change to avoid double count
  if (currentStateCLK != lastStateCLK && currentStateCLK == 1)
  {
    // If the DT state is different than the CLK state then
    // the encoder is rotating CCW so decrement
    if (digitalRead(DT) != currentStateCLK)
    {
      counter --;
      currentDir = "Counter clockwise";
    }
    else 
    {
      // encoder is rotating CW so increment
      counter ++;
      currentDir = "Clockwise";    
    }
    Serial.print("Direction: ");
    Serial.print(currentDir);
    Serial.print(" | Counter: ");
    Serial.println(counter);
  }

  // Remember last CLK state
  lastStateCLK = currentStateCLK;

  //put in a slight delay to help debounce the reading
  delay(1);

}