const int IN1 = 13;
const int IN2 = 12;
const int Enable1 = 14;
const int buttonOpen = 2; // Yellow
const int buttonClose = 0; // Black
const int limit1 = 5;
const int limit2 = 4;

void setup()
{
pinMode(IN1, OUTPUT);
pinMode(IN2, OUTPUT);
pinMode(Enable1, OUTPUT);
pinMode(buttonOpen, INPUT);
pinMode(buttonClose, INPUT);
pinMode(limit1, INPUT);
pinMode(limit2, INPUT);
}

void moveLeft()
{
  digitalWrite(Enable1, HIGH); // wakes up driver
  digitalWrite(IN1, LOW); //
  digitalWrite(IN2, HIGH); // spins counter-clockwise
}

void moveRight()
{
  digitalWrite(Enable1, HIGH); // wakes up driver
  digitalWrite(IN1, HIGH); //
  digitalWrite(IN2, LOW); // spins clockwise
}

void stopMotor() //brake motor for 0.1 seconds to avoid coasting then place             driver to sleep
{
int period = 80L;       // 0.08 seconds
for( int tStart = millis();  (millis()-tStart) < period;  ){
  digitalWrite(IN1, HIGH); // brake
  digitalWrite(IN2, HIGH); // brake
  }
  digitalWrite(Enable1, LOW); // Sleep driver
}

void loop(){
// Move motor right
  if (digitalRead(buttonOpen) == LOW){
  while(digitalRead(limit2) == HIGH){
    moveRight();
    yield();
}
}
 else (stopMotor());


// Move motor left
 if (digitalRead(buttonClose) == LOW){
  while(digitalRead(limit1) == HIGH){
    moveLeft();
    yield();
}
}
 else (stopMotor());
}