#include <Keypad.h>

const uint8_t ROWS = 4;
const uint8_t COLS = 4;
char keys[ROWS][COLS] = {
  { '1', '2', '3', 'A' },
  { '4', '5', '6', 'B' },
  { '7', '8', '9', 'C' },
  { '*', '0', '#', 'D' }
};

uint8_t colPins[COLS] = { 5, 4, 3, 2 }; // Pins connected to C1, C2, C3, C4
uint8_t rowPins[ROWS] = { 9, 8, 7, 6 }; // Pins connected to R1, R2, R3, R4

Keypad keypad = Keypad(makeKeymap(keys), rowPins, colPins, ROWS, COLS);

#include <Stepper.h>
 int stepsPerRevolution=200;
 int motSpeed=10;
 int dt=500;
 int j;
 int Zadanikut;
 int kut=200;
 int brojRupa;
 int busenje;
 String msg="A:Odaberi kut";
 String msg1="B:Odaberi broj rupa";
 String msgA="Koliki je kut?";
 String msgB="Koliko rupa :";
 String msgC="Za nastavak X ";
 String odgovor;
 char odgovor1;
 char curentPosition;
 Stepper myStepper = Stepper(stepsPerRevolution, 10,11,12,13);

 #include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27, 20, 4);

void setup() {
  Serial.begin(9600);
  
  myStepper.setSpeed(motSpeed);
  Serial.println(msg);
  Serial.println(msg1);
   lcd.init();
  lcd.backlight();
  lcd.setCursor(0, 0);
  lcd.print(msg);
  lcd.setCursor(0, 1);
  lcd.print(msg1);
  delay(50);
  
 
}
  


void loop() {
  
  char key = keypad.getKey();

  

  if (int(key) !=0) {
    lcd.setCursor(0,16);
    Serial.println(key);
  }

  if(key=='A'){
    lcd.clear();
  Serial.println(msgA);
  lcd.setCursor(0, 0);
  lcd.print(msgA);
  lcd.setCursor(0,1);
  lcd.print("   ");
  lcd.setCursor(0,1);
  for(j=0;j<=curentPosition;++j){
    lcd.print("*");
  }
  myStepper.step(kut);
  }
  
  }