Sherwood Logic BLE protocol

[Brian Hanrahan]

Love SubSurface app, but couldn't get it to sync with my Sherwood Logic Console (which is actually manufactured by Crest apparently.)

I captured the BLE convo with DiveStoryPro which does support it, and figured out the protocol with the help of a friend named Claude.

It's beyond my skill to contribute the pull request, but in case someone else is able, or for posterity, here's the protocol doc that gets you to downloaded .bin files.

Best,
Brian

[Jef Driesen]

Your documentation looks good. There are still some missing pieces, like
the authentication, but we can probably figure that out too.

Can you share the capture files too? Having access to some real data can
help a lot during the implementation of the protocol. Especially when I
don't have physical access to the dive computer for trying the code
myself.

BTW, I'm also interested to learn how you did the reverse engineering
with the help of your friend Claude. That might be very handy for the
next dive computer protocol :-)

Jef