// #include <Wire.h> 
// #include <SPI.h>
#include <Keypad.h>
#include <LCD_I2C.h>
// #include <LiquidCrystal.h>
// #include <SoftwareSerial.h>
LCD_I2C lcd(0x27); // Default address of most PCF8574 modules, change according

const byte ROWS = 4;
const byte COLS = 4;
int count=0;
int NewIPAddress[16];
int enteredIPAddress[16];

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};
byte colPins[COLS] = {5, 4, 3, 2};

Keypad kpd = Keypad(makeKeymap(hexaKeys), rowPins, colPins, ROWS, COLS);

 

void setup()
{
   lcd.begin();
  lcd.backlight();
}

void loop(){
  // char customKey = customKeypad.getKey();
  // if (customKey){
  //   lcd.clear();
  //   lcd.setCursor(0, 0); 
  //   lcd.print(customKey);
  char key = kpd.getKeys();
  if (key != NO_KEY)
  {
    lcd.print(key);
    Serial.print(key);
    count++;
    enteredIPAddress[count] = key;
    if (count==4)
    {
      lcd.clear();
      count=0;
      lcd.print("Enter IP:");
      lcd.setCursor(0, 1);
    }
  }
  else if (key='#')
  {
    Serial.println();
    for(int i=0; i<3; i++)
    {
      Serial.print(enteredIPAddress[i]);
      Serial.println();
    }
  }
  
}