#include <LiquidCrystal.h>

LiquidCrystal lcd(7, 6, 11, 10, 9, 8);

const int button = 12;
const int Analog = A0;
const int Step = 2;
const int Dir = 3;
int kroki = 0;
int AnalogVal;
int DisplVal;
void setup() 
{
  pinMode(Step, OUTPUT);
  pinMode(Dir, OUTPUT);
  pinMode(button, INPUT);
  pinMode(Analog, INPUT);
  lcd.begin(16,1);
}

void loop() 
{
  AnalogVal = analogRead(Analog);
  AnalogVal = map(AnalogVal, 0, 1023, 1000, 0);
  if(digitalRead(button) == HIGH)
    {
      digitalWrite(Dir, HIGH);
      lcd.clear();
      lcd.print("obrot ");
      kroki++;
      lcd.print(kroki);
      digitalWrite(Step, HIGH);
      digitalWrite(Step, LOW);
      delay(AnalogVal);
    }
  else
    {
      digitalWrite(Dir, LOW);
      for(int i = kroki ; i > 0 ; i--)
      {
        digitalWrite(Step, HIGH);
        digitalWrite(Step, LOW);
        lcd.clear();
        lcd.print("zerowanie ");
        lcd.print(i);
        delay(50);
        kroki--;
      }
      lcd.clear();
      lcd.print(AnalogVal/10);
      lcd.print(" %");
      delay(500);
    }

}