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PIC to PIC communication (suggestions)

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psssssst. Nigel..He doesn't want to use serial data
Russ! Your emoticons are showing:eek:
 
But excessively complicated, not needed, and generally slower than a simple RS232 type solution.

Bear in mind of course, the thread application only requires EXTREMELY slow communication anyway.


You may be right for this application, especially given uart support and/or library support. But a synchronous protocol can be very nice and simple, the clock line eliminates all sorts of timing considerations. For a really simple example ( not I know the full spi or ic2 protocol ) think about clocking out to a shift register.

And yes I have lots of emoticons ( even if I am not sure that I can spell it )

:confused::confused::confused::D
 
That can be pretty darn quick too. And I have done the I2C thing before. Yeah you have START and READ / WRITE things to fiddle with by the levels and edges, but it can be made to HAUL THE EMAIL so to speak. Nothing "slow" about it unless you have a clock restricted source. Outguns most of the RS232 I've tinkered with but it can haul the mail too at the circuit board level.

The controllers I play with have bits to set up the uarts as SPI and I2C
 
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