Patch Set #2, Line 157:
I did spend some time on the page... but I don't recall studying the timing diagram much. […]
"For the first cycle, ..." that is actually redundant with the
first sentence behind that bullet. And it must be true for all
bits. But I agree they try to define an exception somehow for
the first bit, but fail to specify it correctly.
What I was nitpicking is that if you define that MOSI is always
changed on a falling edge, then we don't comply because we don't
have an edge for the first bit. I guess now, the first sentence
behind that bullet just doesn't apply to the first bit for the
available hardware implementations. So there is nothing to argue
about any more ;) it depends on how you define CPHA=0 and it
seems nobody defined it.
CPOL=1 CPHA=1 seems overall less ambiguous too me, maybe that's
why I would prefer it.
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