Bus Pirate v3 PIC 24 analog to digital converter example

Use the ADC pin to control the MODE LED. If the voltage on the ADC pin drops below 3V the LED will turn off.

==Overview==
The Bus Pirate uses the PIC24FJ64GA002 microcontroller, and as such it can be used as a development board for the same, with some limitations. One of the pins is connected directly to the MODE LED and another to internal ADC. In this demo we will write some basic code to get us started with the ADC module.

In the text below, the code is broken up and explained section by section. If you want you can [http://code.google.com/p/dangerous-prototypes-open-hardware/source/browse/#svn%2Ftrunk%2FBus_Pirate%2FFirmware-Demos%2FBlink_MODE_LED download the full MPLAB 8 project from our SVN], or copy/paste the full code for main.c that will be displayed at the bottom of the page.