Added the test module for demo

Preparing to incorporate tests into the demo.

Signed-off-by: Jacob McGladdery <jacobm117@gmail.com>
Added pin definitions

Signed-off-by: Jacob McGladdery <jacobm117@gmail.com>
Now using the correct pad modes for Teensy 3.0

Signed-off-by: Jacob McGladdery <jacobm117@gmail.com>
Reworked much of the PAL

Signed-off-by: Jacob McGladdery <jacobm117@gmail.com>