On Wed, 2011-09-14 at 13:26 -0700, PICdude wrote:
> I need to add another device in this system as an additional display =20
> (retrieve data from S repeatedly and display it), but trying to figure =20
> out the best way to do this.  It will have to be bit-banged.  Let's =20
> call it N.  Here are the options I've come up with...

Do you have an extra IO pin? Have an extra pin between N and M. Use it
to communicate between N and M who wants to access S? Something like "if
the busy line is high, wait until it's low"? Sort of like multi-master,
but you can code-reuse the existing I2C bit bang routines without
modification.

TTYL

--=20
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