demuxing irqs

[Jon Smirl]

I have demultiplexing the GPIO interrupts working well enough to make
my hardware work. But now I've discovered that these interrupts can't
do what I need.

Anton, Grant - are either of you interested in this code? It's not
finished but the main ideas are in place.

I need to switch over to using timer pins. They don't have multiplexed
interrupts.

-- 
Jon Smirl
jonsmirl at gmail.com
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