/* This example assumes a step/direction driver with Step on pin 9, Direction on pin 8
 * And an input switch on pin 3. The switch is a switch to ground, with pin 3 pulled
 * high with a pullup resistor. When the switch is turned on (closed, i.e. goes low)
 * the the stepper motor steps at the rate specified (50 RPM in this code, with
 * 1/8th microstepping of a 200 steps/rev motor)
 * each 'step' from the code's perspective is 1/8th of the motor's full step, 
 * because we are assuming the use of the EasyDriver in 1/8th microstep mode. 
 * If you use the Big Easy Driver, it's default is 1/16 microstep, so adjust your expectations for motor motion accordingly
 * https://www.schmalzhaus.com/EasyDriver/Examples/EasyDriverExamples.html - example 1.7
 * 2= DOWN, 3= UP, 9= STEP, 8=DIR
 */ 


 
#define DISTANCE            1.0
#define RPMS                8.0
#define STEP_PIN                9     // Tells motor to move
#define DIRECTION_PIN           8     // Tells Board/ Motor Direction using HiGH (clockwise)/LOW (Anticlockwise)
#define UP_PIN                  3     // Up Pin = Up Momentary Switch
#define Down_PIN                2     // Down Pin = Down Momentary Switch

#define STEPS_PER_REV         200
#define MICROSTEPS_PER_STEP     8
#define MICROSECONDS_PER_MICROSTEP   (1000000/(STEPS_PER_REV * MICROSTEPS_PER_STEP)/(RPMS / 60))

int StepCounter = 0;
int Stepping = false;
uint32_t LastStepTime = 0;
uint32_t CurrentTime = 0;

void setup() {               
  pinMode(STEP_PIN, OUTPUT);    
  pinMode(DIRECTION_PIN, OUTPUT);
  digitalWrite(STEP_PIN, LOW);
  digitalWrite(DIRECTION_PIN, LOW);
  pinMode(UP_PIN,INPUT);
  pinMode(Down_PIN,INPUT);
}

void loop() {
  if (digitalRead(UP_PIN) == LOW && Stepping == false)
  {
    digitalWrite(DIRECTION_PIN, LOW);             // Tells board Up on direction Pin using LOW
    Stepping = true;                              // Applies above only if true
  }
  if (digitalRead(Down_PIN) == LOW && Stepping == false)
  {
    digitalWrite(DIRECTION_PIN, HIGH);            // Tells board Down on direction Pin using HIGH
    Stepping = true;                              // Applies above only if true
  }
  if (Stepping == true)
    {
      CurrentTime = micros();
    if ((CurrentTime - LastStepTime) > MICROSECONDS_PER_MICROSTEP)
    {
      LastStepTime = CurrentTime;
      digitalWrite(STEP_PIN, HIGH);                             // When stepping True - Step Pin set HIGH Motor moves at Set Speed in Down Direction
      delayMicroseconds((MICROSECONDS_PER_MICROSTEP * 0.9)/2);
      digitalWrite(STEP_PIN, LOW);                              // When stepping True - Step Pin set LOW Motor moves at Set Speed in Down Direction
      delayMicroseconds((MICROSECONDS_PER_MICROSTEP * 0.9)/2);
     StepCounter = StepCounter + 1;

    if (StepCounter == DISTANCE)
    {
      StepCounter = 0;
      Stepping = false;
    }
  }
}
}