If we go for 3-wire I2C, how to power the PIC nodes though?  Could use
6-conductor POTS wiring, use 3 wires for ground and 1 for Vin then the
last 2 wires for SCL and SDA, might do nicely.  Don't know if I'd want
to try I2C as a Ring though?  (I'd think it'd ring really really well
without termination?)

  Mark

William Chops Westfield wrote:
> I was thinking along somewhat similar lines - formalizing an rs232-based
> ring network so that you can put in a good number of nodes (including things
> like PCs.)  OTOH, I'm wondering if it's worth it, what with people here
> having done equally complex (?) things using I^2C, which is more
> "microperipheral friendly" but less "largish computer friendly" (which is
> easilly fixed via an rs232/I2C "gateway")  Using I2C would get rid of a
> good bit of "protocol development effort", I think.
>
> Thoughts?
>
> BillW

--
http://www.piclist.com hint: The list server can filter out subtopics
(like ads or off topics) for you. See http://www.piclist.com/#topics