On the BBW you could get a slow but easy interface to GPIO pins
through the file system at /sys/kernel/debug/gpio or so.
That was angstrom, BBB rev C is debian. I'm happy generally but
I wonder:
1. If the same set of pins are usable for dio (without interfering with
other things, on BBW I found the subset of pins that were open
for use so to speak), is it the same for BBB rev C?
2. Where is the best place to read about the BBB rev C shell interface?
Many of the old angstrom references were not very complete...
Thanks,
Britton
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