Additional pps-gpio

[Hal Murray]

>> I'd expect another step if the timing difference between
>> pulses is such that it changes from 1 interrupt to 2.  The two
>> interrupt case will add the time to return from an interrupt
>> and take the second one.  Maybe a one-shot with a 
>> knob so you can adjust the delay and plot the difference.

> Well if I'm going to do that I'd use a time interval counter and
> not the rasPi. 

I was thinking of measuring the timings inside the Pi rather than the pulse 
width.

If you feed the same pulse to two pins, I'd expect to get readings of T and 
T+x where the x is how long it takes to do some internal processing.  If you 
add a delay between the pulses, the internal processing will change.


-- 
These are my opinions.  I hate spam.