I'm trying to use D28/D29 as a serial console. It looks like it is working partly. I get some debug/boot output, but not more. The same effect occurs on my Mac as well as my Windows system. I'm grateful for any Suggestion.
The screen shot was taken after I power cycled the Puck twice.
Is it possible that your saved code is doing something that is causing it not to respond? You could try power-cycling it with the button held down for ~5 seconds and then saved code won't be loaded.
Also, is GND connected up? Sometimes not connecting it can cause some weird issues like that.
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