[Diy_efi] Re: Minimalist micro based EFI ?

[Bevan Weiss]

It is most defineately possible, it's just the limitations that it puts on
the features available.  ie the ignition/fuel table would have to be small.
And it wouldn't be able to handle that many different operations
psuedo-simultaneously.

Without all the extra hardware, ie hardware PWM, TPU etc then trying to get
the performance that you desire out the processor will be that much harder
to achieve.

Good luck in trying though,
Bevan Weiss

> Yeah interesting,
>
> It seems to me it should be possible to use a smaller micro and
> do a classic spi type latched output for things like injectors
> and digital non-time critical outputs, similarly with inouts.
> This issue about lots of timers is a bit of a red-herring, it
> boils down to ram and effective use of a RTC, you can have as
> many timers as you have ram,
>
> So it boils down to a fast enough CPU, some basic 10 bit adc
> and ram... There should be lots of processors that can handle that
> and still have room for tables... etc
>
> rgds
>
> mike

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