#include <ezButton.h>

// define arduino D6, D5 and D4 pins as forward, reverse and step angle buttons 
const int forwardButton = 6;
const int reverseButton = 5;
const int stepAngleButton = 4;

// define arduino D2 and D3 pins as direction and Pulse
int direction = 2;
int pulse = 3;

int count;  // A variable for counting pulses

// ------------------------------- Change the variable depending on your desired speed and angle ------------------------------
int pulseCount = 500; // Enter the number of pulses that will rotate at a certain angle the stepper with a single press
int time = 3000;  // Set a pulse lenght of the stepper or speed of the stepper motor in microsecond
//---------------------------------- End ---------------------------------------------------------------------------------------

ezButton button(stepAngleButton); // initialize button 3 pin

void setup() {
  // declared pins as input/output
  pinMode(forwardButton, INPUT_PULLUP);
  pinMode(reverseButton, INPUT_PULLUP);
  pinMode(stepAngleButton, INPUT_PULLUP);
  pinMode(direction, OUTPUT);
  pinMode(pulse, OUTPUT);

  // set first time pulse and direction pins as low
  digitalWrite(direction, LOW);
  digitalWrite(pulse, LOW);

  button.setDebounceTime(50); // button debounce time
}

void loop() {
  button.loop();  // a functional loop

// read the status of three buttons
  int forwardState = digitalRead(forwardButton);
  int reverseState = digitalRead(reverseButton);
  int stepAState = digitalRead(stepAngleButton);

// check the forward button status
  if(forwardState == LOW){
    delay(10);
    if(forwardState == LOW){
      digitalWrite(direction, LOW); // set the stepper motor clockwise direction 
      do{
        digitalWrite(pulse, HIGH);
        delayMicroseconds(time);
        digitalWrite(pulse, LOW);
        delayMicroseconds(time);
        forwardState = digitalRead(forwardButton); // read the forward button status again
      }
      while(forwardState != HIGH);
    }
  }

// check the reverse button status
  if(reverseState == LOW){
    delay(10);
    if(reverseState == LOW){
      digitalWrite(direction, HIGH);  // set the stepper motor anti-clockwise direction

      do{
        digitalWrite(pulse, HIGH);
        delayMicroseconds(time);
        digitalWrite(pulse, LOW);
        delayMicroseconds(time);

        reverseState = digitalRead(reverseButton);  // read the reverse button status again
      }
      while(reverseState != HIGH);
    }
  }

// check the stepAngleButton button status
  if (stepAState == LOW){
    if(button.isPressed()){
      digitalWrite(direction, HIGH);  // set the stepper motor clockwise direction
      for(count=0; count<pulseCount; count++){
        digitalWrite(pulse, HIGH);
        delayMicroseconds(time);
        digitalWrite(pulse, LOW);
        delayMicroseconds(time);
      }
    }

    if(button.isReleased()){
        digitalWrite(pulse, LOW); // stopped the stepper motor
    }
  } 
}