#include<Keypad.h>
#include<LiquidCrystal_I2C.h>
#include<EEPROM.h>

#include <LiquidCrystal.h>
bool f1 = false, f2 = false, f3 = false;
const byte rows = 4;   //four rows
const byte cols = 4;  //four columns
char priceArray[13] = "";      //to store four digit price + null-byte
char priceRead[13] = "";
char priceArray1[13] = "";      //to store four digit price + null-byte
char priceRead1[13] = "";
int i = 0;
int dial =0;
int adress;
LiquidCrystal lcd(12, 11, 10, 9, 8, 7);
char keyMap[rows][cols] =
{
  {'1', '2', '3', 'A'},
  {'4', '5', '6', 'B'},
  {'7', '8', '9', 'C'},
  {'*', '0', '#', 'D'}
};

byte rowPins[rows] = {5, 4, 3, 2};    //R1R2R3R4 connection Pin = 4567
byte colPins[cols] = {A3, A2, A1, A0};     //C1C2C3C4 connection Pin = 891011
Keypad myKeypad = Keypad(makeKeymap(keyMap), rowPins, colPins, rows, cols); //Library Function
int mode=1;
void setup()
{
   lcd.begin(16, 2);
  //lcd.init();
 // lcd.backlight();
 lcd.print("jmd electroniks");
 delay(2000);
  lcd.setCursor(0, 0);   //cursor position DP0 Top Line
  lcd.clear();
 EEPROM.write(100,"HAI"); 
}

void loop()
{
  char input = myKeypad.getKey();  //scan keypad
  
  if(input=='C'|| mode ==1){lcd.clear();  lcd.print("press # enter no");mode=0;}
  if (input != 0x00)       //key pressed
  {
    if (f1 == true)
    {
      if(input == '*'){input = '+';}
      lcd.print(input);
      priceArray[i] = input;
      i++;
      if (i == 13)
      {
        EEPROM.put(adress, priceArray);
        lcd.setCursor(0, 1);
        lcd.print("Saved!");
        f2 = true;
        f1 = false;
      }
    }

       if (input == 'B'|| mode==10)
        { mode=10;
          lcd.setCursor(0, 1);
          lcd.print("enter adress       ");
          if(input=='1'){
          EEPROM.get(1, priceRead);
          lcd.setCursor(0, 1);
          lcd.print("Got");
          lcd.print(priceRead);
          f2 == false ;
          mode=0;}
           if(input=='2'){
          EEPROM.get(20, priceRead);
          lcd.setCursor(0, 1);
          lcd.print("Got");
          lcd.print(priceRead);
          f2 == false ;
          mode=0;}
        }
       
        }

          if (input == '#'|| dial == 1)
          {dial= 1;
          lcd.setCursor(0, 1);
          lcd.print("enter adress");
            if(input=='1'){lcd.print("                  ");
            lcd.setCursor(0, 1);
            lcd.print("                  ");
            lcd.setCursor(0, 1);
            lcd.print(">");
            f1 = true;
            lcd.setCursor(2, 1);   //DP7, TL
            dial=0;
            adress=1;
            }
            if(input=='2'){lcd.print("                  ");
            lcd.setCursor(0, 1);
            lcd.print("                  ");
            lcd.setCursor(0, 1);
            lcd.print(">");
            f1 = true;
            lcd.setCursor(2, 1);   //DP7, TL
            dial=0;
            adress=20;
            }
          }
        }