Fixes necessary to make the new interrupt and DMA driven ADC routines work properly.

There is some sort of issue which makes the results seem to be 10 bit instead of the proper
12 bit but otherwise the ADC readings are reasonably smooth.
Fixed up and enabled brake transducer code, Added debugging lines

Fixed up the code for accelerator pedal and brake transducer tracking. It tests to work properly now for both.

Added some additional comments

Added some lines (commented out) for debugging

Switched to default to single input throttle since I think the upcoming test will use only one pot.