#define DIR 19
#define STEP 32

void setup() {
pinMode(STEP, OUTPUT);
pinMode(DIR, OUTPUT);

 
}

void loop() {
  digitalWrite(DIR, HIGH);
  for(int i=0; i<200;i++){
    digitalWrite(STEP, HIGH);
    delayMicroseconds(800);
    digitalWrite(STEP,LOW);
    delayMicroseconds(800);

  }
  delay(1000); 
  digitalWrite(DIR,LOW);
  for(int i=0; i<200;i++){
    digitalWrite(STEP, HIGH);
    delayMicroseconds(800);
    digitalWrite(STEP,LOW);
    delayMicroseconds(800);

  }
  delay(1000); 

}