const int direction_pin = 26;
const int step_pin = 27;
const int left_button = 29;  
const int right_button = 6; 
int go_left = LOW;
int go_right = false;

void setup() {
  // put your setup code here, to run once:
  pinMode(direction_pin, OUTPUT);
  pinMode(step_pin, OUTPUT);
  pinMode(left_button, INPUT_PULLDOWN);
  pinMode(right_button, INPUT_PULLDOWN);
  
}

void step() {
  while (go_left == HIGH){
    // move left
    digitalWrite(direction_pin, LOW);
    digitalWrite(step_pin, HIGH);
    delayMicroseconds(1000); 
    digitalWrite(step_pin, LOW);
    delayMicroseconds(1000); 
    go_left = LOW;
  }
  while (go_right == HIGH){
    // move right
    digitalWrite(direction_pin, HIGH);
    digitalWrite(step_pin, HIGH);
    delayMicroseconds(1000); 
    digitalWrite(step_pin, LOW);
    delayMicroseconds(1000);
    go_right = LOW;
  }
}

void loop(){
  go_left = digitalRead(left_button);
  go_right = digitalRead(right_button);
   step();
  Serial.print("output:");
  Serial.print(go_left);
  Serial.print("|");
  Serial.println(go_right); 
  delayMicroseconds(1000);
}