/**
   Arduino Calculator

   Copyright (C) 2020, Uri Shaked.
   Released under the MIT License.
*/

#include <LiquidCrystal.h>
#include <Keypad.h>
#include <Servo.h>
#include <stdio.h>
#include <stdlib.h>



LiquidCrystal lcd(12, 11, 10, 9, 8, 7);

const byte KEYPAD_ROWS = 4;
const byte KEYPAD_COLS = 4;
byte rowPins[KEYPAD_ROWS] = {5, 4, 3, 2};
byte colPins[KEYPAD_COLS] = {A3, A2, A1, A0};
char keys[KEYPAD_ROWS][KEYPAD_COLS] = {
  {'1', '2', '3', ' '},
  {'4', '5', '6', ' '},
  {'7', '8', '9', ' '},
  {' ', '0', ' ', ' '}
};

Keypad keypad = Keypad(makeKeymap(keys), rowPins, colPins, KEYPAD_ROWS, KEYPAD_COLS);

uint64_t value = 0;
//variables
String inputText = "";

void updateCursor() {
  if (millis() / 250 % 2 == 0 ) {
    lcd.cursor();
  } else {
    lcd.noCursor();
  }
}

void ascendString(string &text){
  lcd.clear()
  lcd.print("123")
}


void setup() {
  Serial.begin(115200);
  lcd.begin(16, 2);

  lcd.clear();
  lcd.cursor();

  lcd.setCursor(1, 0);
}

uint64_t currentDecimal;
bool decimalPoint = false;

void processInput(char key) {
  if (key == +){
    
  }
  else if (key != ' ')
    inputText = inputText + key;
    lcd.clear();
    lcd.print(text);
}

void loop() {
  updateCursor();

  char key = keypad.getKey();
  if (key) {
    processInput(key);
  }
}