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Thanks Dave, I downloaded it and will give it a thorough looking over.

As for transfer speeds, I intend to use a Rotation variable in the Master that polls one peripheral MCU each pass of the Main loop. Transfer size is 2 bytes; first byte is what the data is (Temp)...

Thanks for the responses. Individual MCUs will be mounted on the same board, same plane, with one exception. One of the MCUs will be located perhaps 1-3 meters (several feet) away from the Master...

I'm a bit new to communications between processors. I recently spent the time to get USART (HSERIN/HSEROUT) functional. It seems this is a great communications protocol for 2 processors to talk to...