_6_EEPROM.ino

//   ####################################################################################################
//   # Flight 3000 written by Mark Sunnucks (Snux) Copyright 2016                                       #
//   #                                                                                                  #
//   # Based on and expanded from example code supplied with the myPinballs Custom Controller Boardset  #
//   #                                                                                                  #
//   # This code will not compile or run on its own. It requires the myPinballs Custom Controller       #
//   # Boardset hardware and frameworks, which are available here:                                      #
//   # http://mypinballs.co.uk/electronics/store.jsp                                                    #  
//   #                                                                                                  #
//   # Boardset, All Frameworks & Code Structure/Design are Copyright Orange Cloud Software Ltd         #
//   ####################################################################################################
//
//   This file is part of Flight 3000.
//
//   Flight 3000 is free software: you can redistribute it and/or modify it under the terms of the GNU General Public 
//   License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
//   Flight 3000 is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
//   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
//
//    _  ___   _____    _   __  __   _  _              _ _         
//   | \| \ \ / / _ \  /_\ |  \/  | | || |__ _ _ _  __| | |___ _ _ 
//   | .` |\ V /|   / / _ \| |\/| | | __ / _` | ' \/ _` | / -_) '_|
//   |_|\_| \_/ |_|_\/_/ \_\_|  |_| |_||_\__,_|_||_\__,_|_\___|_|  
//                                                                 

#include <EEPROM.h>

//This function will write a 4 byte (32bit) long to the eeprom at
//the specified address to address + 3.

void EEPROMWritelong(int address, long value)
{
    //Decomposition from a long to 4 bytes by using bitshift.
    //One = Most significant -> Four = Least significant byte
    byte four = (value & 0xFF);
    byte three = ((value >> 8) & 0xFF);
    byte two = ((value >> 16) & 0xFF);
    byte one = ((value >> 24) & 0xFF);

    //Write the 4 bytes into the eeprom memory.
    EEPROM.write(address, four);
    EEPROM.write(address + 1, three);
    EEPROM.write(address + 2, two);
    EEPROM.write(address + 3, one);
}

long EEPROMReadlong(long address)
{
    //Read the 4 bytes from the eeprom memory.
    long four = EEPROM.read(address);
    long three = EEPROM.read(address + 1);
    long two = EEPROM.read(address + 2);
    long one = EEPROM.read(address + 3);

    //Return the recomposed long by using bitshift.
    return ((four << 0) & 0xFF) + ((three << 8) & 0xFFFF) + ((two << 16) & 0xFFFFFF) + ((one << 24) & 0xFFFFFFFF);
}