Mares Bluetooth dongle

[Linus Torvalds]

On Mon, Sep 24, 2018 at 11:46 AM Dirk Hohndel <dirk at hohndel.org> wrote:
> > On Sep 24, 2018, at 11:36 AM, Linus Torvalds <torvalds at linux-foundation.org> wrote:
> >
> > I'm hoping to have hardware to test by Thursday, but I'm actually
> > hoping I could have a test-patch for people to try before that.
>
> You bought another dive computer?

No. I went into the local dive shop to ask if they can rent them, but
they don't. But the owner has seen me there enough that he just said
"take it for a few days".

So I have a Mares Quad Air to play with for a few days, and I decided
to just buy the bluetooth donge that they didn't have in the store. It
was prime, but sadly not "two day" prime, just "get it by Thursday".

> > Because the Mares BLE case really looks like we should be able to get
> > it working fairly trivially.
>
> I am traveling Tue/Wed this week - but usually I can create a test APK on a very
> quick turnaround. So the moment you have a patch you want me to try, getting
> an APK out "only" requires me to be near my computer and have a few minutes
> to start of a build and upload it.

I should have a patch later today.  Need to go grocery shopping and
mull over just how to select the endpoints so that I don't screw up
any of our existing cases.

Our code to pick a characteristic is basically almost entirely random
and just "this worked for the cases we had" with then the Heinrichs
Weicamp thing being a complete special case because of the whole "need
to do flow control in software" thing.

I suspect I just need to bite the bullet and have a per-divecomputer
set of uuid's etc, with the existing code as a fallback. Or something.

I'm not writing code yet, I've only got to the "I understand what's
wrong" phase.

              Linus