documentation

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Is there any documentation?
I'm wondering how the output from M2RET is formatted. Is it binary? ASCII? Can you send commands to M2RET, and if so how? Etc..

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ok I just found the CommProtocol.txt file which briefly explains formatting. Just gotta figure out how commands are issued to the M2. Like do I just send a single byte command to the serial port? Still not sure how to enable LAWICEL mode. Would be nice if documentation was in one place/easier to find. It's a bit disorganised/daunting for beginners.

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alright so this document describes a console mode for M2RET. It can be accessed with SavvyCAN
https://github.com/collin80/SavvyCAN/blob/master/help/connectionwindow.md
I guess I'll just have to play with it and see.

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So you need a program like Tera Term to access the M2RET console. Send "?" or "h" to the correct com port and you'll get a read-out of the build number and various options. When I try this from the SavvyCAN console I get nothing.
There doesn't seem to a way to enable LAWICEL mode from the console.

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Tera Term doesn't allow you to send hexadecimal commands though (described in CommProtocol.txt), and I could not make RealTerm work. I had to go back to SavvyCAN.
I figured out the SavvyCAN console by trial and error. Enter the hex bytes with no prefix, delimited by a space (ex. F1 7) and press Send Hex. SavvyCAN keeps sending keepalive commands though , so responses quickly scroll out of view.
I still see no way to enable LAWICEL mode, so maybe the only way is to do it in code and recompile M2RET?