Arduino Camshaft Measurement Tool © GPL3+

#define stp 2
#define dir 3
#define MS1 4
#define MS2 5
#define EN  6

const int button1Pin = 7;
const int button2Pin = 8;
const int button3Pin = 9;
const int ledPin =  13;
int button1State = 0;
int button2State = 0;
int button3State = 0;

char user_input;
int x;
int y;
int state;

void setup() {
  pinMode(ledPin, OUTPUT);
  pinMode(button1Pin, INPUT);
  pinMode(button2Pin, INPUT);
  pinMode(button3Pin, INPUT);  
    
  pinMode(stp, OUTPUT);
  pinMode(dir, OUTPUT);
  pinMode(MS1, OUTPUT);
  pinMode(MS2, OUTPUT);
  pinMode(EN, OUTPUT);
  resetEDPins();
}

void loop() {
      button1State = digitalRead(button1Pin);
      button2State = digitalRead(button2Pin);
      button3State = digitalRead(button3Pin);
      
      if (button1State == HIGH) {
        digitalWrite(EN, LOW);
        StepForward();
        resetEDPins();
        delay(250);
      } 

      if (button2State == HIGH) {
        digitalWrite(EN, LOW);
        StepBack();
        resetEDPins();
        delay(250);
      }else {
        digitalWrite(ledPin, LOW);
      }

      if (button3State == HIGH) {
        digitalWrite(EN, LOW);
        aStepBack();
        resetEDPins();
        delay(250);
      }else {
        digitalWrite(ledPin, LOW);
      }
}

void resetEDPins()
{
  digitalWrite(stp, LOW);
  digitalWrite(dir, LOW);
  digitalWrite(MS1, LOW);
  digitalWrite(MS2, LOW);
  digitalWrite(EN, HIGH);
}

void StepForward()
{
  digitalWrite(dir, LOW);

  for(x= 1; x<2; x++)
  {
        digitalWrite(stp,HIGH);
        delay(200);
        digitalWrite(stp,LOW);
        delay(200);
    }
}

void StepBack()
{
 digitalWrite(dir, HIGH);
  for(x= 1; x<801; x++)
  {
    digitalWrite(stp,HIGH);
    delay(200);
    digitalWrite(stp,LOW);
    delay(200);
  }
}  

void aStepBack()
{
 digitalWrite(dir, HIGH);
  for(x= 1; x<2; x++)
  {
    digitalWrite(stp,HIGH);
    delay(200);
    digitalWrite(stp,LOW);
    delay(200);
  }  

}

// 56.5 number for 8 reads per sec of indicator
//    delay(56.5);