Support defmt

[TheButlah]

I will be transitioning from defmt-rtt to using the USB Jtag peripheral as my defmt printer since I cannot use direct-boot.

Would it be possible to add defmt decoding support to espmonitor? To be clear, I'm suggesting that there is a commandline flag or something that treats the serial output from the device as being in defmt encoding.

[kelnos]

I've never heard of defmt before, so not sure I'm too interested in doing this, but I'd be happy to accept a patch if you're feeling up to implementing it.

[TheButlah]

For some additional context: https://github.com/knurling-rs/defmt and https://defmt.ferrous-systems.com/introduction.html

[TheButlah]

Would this issue be better in the espflash repo by any chance? That tool also does monitoring.

[kelnos]

I believe espflash uses espmonitor as a library to do its monitoring.

[kelnos]

I believe espflash uses espmonitor as a library to do its monitoring.

Hmm, actually that seems not to be the case; the developer over there asked me to make some changes so they could do that, but I guess they never got around to it.

Personally I'd rather have all the good stuff in espmonitor; my opinion is that monitoring is a "distraction" for espflash and it should defer to espmonitor for that. But up to you where you'd rather put your time, if you end up deciding to implement it yourself.