//#define Del 1000;
#include <Wire.h>
#include <LiquidCrystal.h>
#include <AccelStepper.h>

int button_pin=7;
int button_press_count;
int button_state = 0;
const int stepPin=12;
const int dirPin=11;
int prev_button_state = 0,i,arr[100],v,mf=10,ok=0,step=0;
long int t;
int c=0;

#define OLED_WIDTH 128
#define OLED_HEIGHT 64
#define OLED_ADDR   0x3C
Adafruit_SSD1306 display(OLED_WIDTH, OLED_HEIGHT);


#define motorInterfaceType 1
AccelStepper myStepper(motorInterfaceType, stepPin, dirPin);


void setup() {
  Serial.begin(9600);

  display.begin(SSD1306_SWITCHCAPVCC, OLED_ADDR);
  display.clearDisplay();
  display.setTextSize(2);
  display.setTextColor(WHITE);
  display.setCursor(0, 0);
  display.println("Welcome");

  myStepper.setMaxSpeed(1000);
  myStepper.setAcceleration(50);
  myStepper.setSpeed(200);
  myStepper.moveTo(200);

  pinMode (button_pin, INPUT_PULLUP); 
  pinMode (8, INPUT_PULLUP); 
  myStepper.setSpeed(60);
  Serial.println("Button Count:");
}

void loop() {
  if(digitalRead(9) != HIGH) {  
  if((digitalRead(8)==HIGH)&&(c==0)){
  	button_pin=8;
  	mf=1; c++;
  }
  button_state = digitalRead(button_pin);
  if (button_state != prev_button_state) {
    if (button_state ==LOW){
      v=v+mf;
      i++;
      Serial.print("Volume: ");
      Serial.println(v);
      display.setTextSize(2);
      display.setTextColor(WHITE);
      display.setCursor(0, 0);
      display.println(""Enter Volume: ");
      display.println(v);
    }
  }
    prev_button_state = button_state;
  }
  else if((ok == 0) && (digitalRead(9) == HIGH))
  {
    Serial.print("Final Volume = ");
	Serial.println(v);
    ok = 1;
      display.clearDisplay();

      display.setTextSize(2);
      display.setTextColor(WHITE);
      display.setCursor(0, 0);
      display.println("final vol: ");
      display.println(v);
	step++;
  }
  if (step==1){
    if (myStepper.distanceToGo() == 0) 
		myStepper.moveTo(-myStepper.currentPosition());

	// Move the motor one step
	myStepper.run();
  }

}