[Diy_efi] Data Logger CPU schematic and C for review

[Ian Molton]

Steven P. Donegan wrote:
> Given the 'front end' processing the data logger part will be able to do
> I expect the ARM will be snoozing even if it does the DSP'ish work of
> analyzing ION sensor inputs :-)

FFT on an ARM... I wouldnt like to say - its not the fastest of 
calculations without an FPU or hand crafted fixed point assembly... 
that said if its merely RPM related functions, then there are simpler 
algorithms.

> And I believe the 60k RPM is about 4x any expected usage - being an
> Engineer I LOVE massive overkill :-)

That said, if anyone would like us to, erm, test the system on an engine 
capable of this sort of speed, please don't heasitate to donate one to 
Steve and I, so we can be sure to get the ECU tailored nicely to work on 
it...