Re: ProgRock - Serial

Robin Midgett
 

Thanks for the help, Alan. S1-3 is on (grounded) with a jumper, Tx & Rx lines are double verified.

Studying the thing tonight, I think I've found the problem. From the manual regarding firmware revisions:
pr1.01 06.Mar.2017 - Added serial interface configuration option

My chip: 

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