#define CW 0
#define CCW 1

const byte stepPin = 2; // x axis > 2, y axis > 3, z axis > 4 a axis > 12
const byte dirPin = 5; // x axis > 5, y axis > 6, z axis > 7 a axis > 13
const byte enablePin = 8;

unsigned long stepTime = 800;

void setup()
{
   Serial.begin(9600);
   pinMode(stepPin, OUTPUT);
   pinMode(dirPin, OUTPUT); 
   pinMode(enablePin, OUTPUT);
   digitalWrite(enablePin, LOW);
   digitalWrite(dirPin, CCW);
}

void loop()
{
  oneStep();
}

void oneStep()
{
   static unsigned long timer = 0;
   unsigned long interval = stepTime;
   if (micros() - timer >= interval)
   {
      timer = micros();
      digitalWrite(stepPin, HIGH);
      delayMicroseconds(10);
      digitalWrite(stepPin, LOW);
   }
}