CDP Sniffer for the Ethernet Arduino R3

This applications parse CDP packets and display different information on a
16x2 LCD screen from Adafruit Industries.

http://learn.adafruit.com/rgb-lcd-shield/overview

You need to install the Adafruit libraries for the LCD shield

https://github.com/adafruit/Adafruit-RGB-LCD-Shield-Library 

Requirements:
- Arduino Ethernet R3
- USB Serial Light Adapter
- USB A male to mini B cable
- Adafruit LCD shield
- Adafruit LCD shield libraries

Functions:
Several TLV fields from CDP packets are decoded and displayed on a LCD
screen.