// defines pins numbers

const int stepPin = 3;

const int dirPin = 4;

const int enPin = 2;

const int homeSwitchPin = 12;

//from here are variables for change of values (0 and 1)

int speedState = 0;
int speedswitch = 13; 
int buttonNew;
int buttonOld=1;


void setup() {
  
buttonNew=digitalRead(speedswitch);

   Serial.begin(9600);
   Serial.println(speedState);

  // Sets the two pins as Outputs

  pinMode(stepPin,OUTPUT);

  pinMode(dirPin,OUTPUT);

  pinMode(homeSwitchPin , INPUT);

  pinMode(enPin,OUTPUT);

  pinMode(speedswitch,INPUT);

  digitalWrite(enPin,LOW);



  // Set Dir to Home switch

  digitalWrite(dirPin,LOW); // sets pin 4 as ready to send AntiClockWise signal to stepper


}

void loop() {

    int homeSw = digitalRead( homeSwitchPin); // checks if switch on pin 12 is pressed

    if( homeSw == HIGH && (digitalRead(dirPin) == LOW) ){ //if limit switch is NOT pressed and pin 4 is set as Anticlockwise
      

        motorStep(1); // rotates one step
      

    }

    else if( homeSw == LOW && (digitalRead(dirPin) == LOW) ){ //if limit switch IS pressed and pin 4 is set as Anticlockwise

          digitalWrite(dirPin,HIGH); // sets pin 4 as ready to send Clockwise signal to stepper

    }



    if (homeSw == LOW && (digitalRead(dirPin) == HIGH)){ // If pin 4 is set as Clockwise

        motorStep(200); //precise angle of rotation

buttonNew=digitalRead(speedswitch);
      
      if(buttonOld==0 && buttonNew==1){
         if (speedState==0){
          motorStep(1000);
          digitalWrite(dirPin,HIGH);
           // sets pin 4 as ready to send Clockwise signal to stepper
          
          speedState=1;
          Serial.println(speedState);
         }
          else{
    
    speedState=0;
  }
      } 


    }
      
      
     
      

  
}

void motorStep( int MAX){// start of speed of rotation code


   for(int x = 0; x < MAX; x++) {

        digitalWrite(stepPin,HIGH);

        delayMicroseconds(2000);

        digitalWrite(stepPin,LOW);

        delayMicroseconds(2000);

      }// start of speed of rotation code

}