#include <Wire.h> //Reikalingas ekranui
#include <LiquidCrystal_I2C.h> // Reikalingas ekranui
#include <Keypad.h> // reikalingas klaveturai

const byte ROWS = 4; //four rows
const byte COLS = 4; //four columns

//define the cymbols on the buttons of the keypads
char hexaKeys[ROWS][COLS] = {
  {'1', '2', '3', 'A'},
  {'4', '5', '6', 'B'},
  {'7', '8', '9', 'C'},
  {'*', '0', '#', 'D'}
};
byte rowPins[ROWS] = {9, 8, 7, 6}; //connect to the row pinouts of the keypad
byte colPins[COLS] = {5, 4, 3, 2}; //connect to the column pinouts of the keyp

Keypad customKeypad = Keypad( makeKeymap(hexaKeys), rowPins, colPins, ROWS, COLS);
int slaptSimbol = 0;
int slaptazodis[4];
int slaptazodisDAUG[4] = {1035, 58, 12, 158};
int slapt = 0;

char customKey = customKeypad.getKey();
int sk = customKey - '0';


//#define BACKLIGHT_PIN     13

LiquidCrystal_I2C lcd(0x27, 2, 1, 0, 4, 5, 6, 7, 3, POSITIVE); // Set the LCD I2C address


void setup()
{
  Serial.begin(9600);
  lcd.begin(16, 2);
  lcd.clear();
  Serial.write("Uzkrovem setup");
  prisijungti(4, 5555);
}

void loop()
{
}

bool prisijungti(int SLAPTAZODZIOilg, int SLAPTAZODIS) { // Bandyk ta informacija per cia ideti
  // SLAPTAZODIS tai tas tavo galutinis, sudaugintas numeris (6315)
  // SLAPTAZODZIO_KUODOTE[] tai tie skaiciai kuriuos daugins (1035, 58, 12, 158)
  lcd.setCursor(2, 0);
  lcd.print("PRISIJUNGIMAS");

  int bandomasSlapt = 0;

  Serial.write("Pradejom krauti funkcija");
  for (int i = 0 ; i < SLAPTAZODZIOilg ; i++ ) {
    while (customKey) {
      slaptazodis[slaptSimbol] = sk;
      Serial.write("Paspaudem skaiciu");
    }
    // Cia isivedi ta skaiciu i masyva ir sudaugini ar dar kokia nesamone sugalvoji
    bandomasSlapt += slaptazodis[slaptSimbol] * slaptazodisDAUG[slaptSimbol] + slapt;

    lcd.setCursor(6 + slaptSimbol, 1);
    lcd.write("*");
  }

  if(bandomasSlapt == SLAPTAZODIS)
  {
    lcd.setCursor(11, 1);
    lcd.print("OK");
    Serial.write("Slaptazodis Geras");
    return true;
  }
  else
  {
    lcd.setCursor(11, 1);
    lcd.print("NO");
    Serial.write("Slaptazodis blogas");
    return false;
  }
  return true;
}