/*     Simple Stepper Motor Control Exaple Code

    by Dejan Nedelkovski, www.HowToMechatronics.com

*/

// Defines pins numbers
const int stepPin = 4;
const int dirPin = 3;
const int selectDirPin = 9;
int customDelay, customDelayMapped; // Defines variables
bool dirState = LOW;
void setup()
{
  // Sets the two pins as Outputs
  pinMode(stepPin, OUTPUT);
  pinMode(dirPin, OUTPUT);
  pinMode(selectDirPin, INPUT_PULLUP);

  digitalWrite(dirPin, HIGH); //Enables the motor to move in a particular direction
}
void loop()
{
  dirState = digitalRead(selectDirPin);
  if (dirState == LOW)
  {
    digitalWrite(dirPin, LOW);
  }
  else
  {
    digitalWrite(dirPin, HIGH);
  }
  customDelayMapped = speedUp(); // Gets custom delay values from the custom speedUp function
  // Makes pules with custom delay, depending on the Potentiometer, from which the speed of the motor depends
  digitalWrite(stepPin, HIGH);
  delayMicroseconds(customDelayMapped);
  digitalWrite(stepPin, LOW);
  delayMicroseconds(customDelayMapped);
}
// Function for reading the Potentiometer
int speedUp() {
  int customDelay = analogRead(A0); // Reads the potentiometer
  int newCustom = map(customDelay, 1023, 0, 1, 15000); // Convrests the read values of the potentiometer from 0 to 1023 into desireded delay values (300 to 4000)
  return newCustom;
}