W5100/W5200 Ethernet Library for Arduino

This is a modified version of the Arduino Ethernet library from version 1.8.5 that supports both the WIZnet W5100 and W5200 (e.g. WIZ820io module) chips.

WIZnet previously (ca. Arduino 1.0.5) published modified w5100.h and w5100.cpp files to support the W5200 here but these are now incompatible with the Arduino 1.8.5 Ethernet library.

Using the WIZnet w5100.h and w5100.cpp files, patches were extracted and adjusted for Arduino 1.8.5. A change was also made to support the ATmega1284/P and ATmega644/A/P/PA microcontrollers.

Installation

This repo contains branches for the W5100 and W5200 chips. Recommended installation is to clone the repository into the sketchbook/libraries directory. This will preserve the original Ethernet library installed with the Arduino IDE but the one in sketchbook/libraries will take precedence when compiling sketches. To revert back to the standard library, simply delete the Ethernet directory under sketchbook/libraries.

To clone the repo from the command line, change to the sketchbook/libraries directory and issue the command:

git clone https://github.com/JChristensen/Ethernet

To switch between branches:

git checkout w5100
git checkout w5200
git checkout master  # for the original library from Arduino 1.8.5

Branches can be switched even while the Arduino IDE is running; restarting the IDE is not necessary. The next compile will use the selected branch.

Check the active branch with:

git branch

Contents of the original README.adoc file follows.

Ethernet Library for Arduino

With the Arduino Ethernet Shield, this library allows an Arduino board to connect to the internet.

For more information about this library please visit us at http://www.arduino.cc/en/Reference/Ethernet

License

Copyright (c) 2010 Arduino LLC. All right reserved.

This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version.

This library 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 Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA