Michael Watterson wrote:
> So each pin that drives a coil has 2 x 16 bit software counters, one
> for current position on 8Hz cycle

16 bits is not likely enough given the slow output frequency and therefore
the small angle step each PWM pulse.  My first knee jerk reaction is to use
another word for the fraction.  That will provide much more frequency
resolution, although the OP didn't say what the frequency accuracy had to
be.


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