#define stepPin 8
#define dirPin_rotate 9
#define dirPin_set 7
#define flagPin 2
#define potPin A0


int pot_value;
volatile bool interruptFlag = false;

void setup() {
  // put your setup code here, to run once:
  pinMode(stepPin, OUTPUT);
  pinMode(flagPin, INPUT);
  pinMode(dirPin_rotate, OUTPUT);
  pinMode(dirPin_set, INPUT);
  attachInterrupt(digitalPinToInterrupt(flagPin), handleInterrupt, RISING);
}

void handleInterrupt() {
  interruptFlag = true;
}

void setPosition() {
  int pot_value = analogRead(potPin);
  int steps = map(pot_value, 0, 1023, 0, 200);
  digitalWrite(dirPin_rotate, digitalRead(dirPin_set)); // sets the direction pin
  for (int x=0; x<steps; x++){
    digitalWrite(stepPin, HIGH);
    delay(10);
    digitalWrite(stepPin, LOW);
    delay(10);
  }
  delay(500);
}

int direction() { 
  return digitalRead(flagPin);
}

void loop() {  
 
  digitalWrite(dirPin_rotate, HIGH);
  for (int i=0; i<100; i++){
    if (interruptFlag) {
      interruptFlag = false; // Clear the flag
      setPosition(); 
    }  
    digitalWrite(stepPin, HIGH);
    delay(50);
    digitalWrite(stepPin, LOW);
    delay(50);}
}