Deepblu Cosmiq+ download and sync

[Brad Ahlf]

Q: Has anyone got Subsurface to download from a Deepblu Cosmiq+ dive computer?

If so, how?

We have 3 of these Dive Computers in our family, and with Deepblu apparently out of the business of supporting these devices, we would like to be able to <somehow> sync and download all the logs from the device now, and in the future too, using Subsurface.

I switched the Deepblu Cosmiq+ dive computer into the transfer screen #6 with the 1:30 countdown for sync and transfer of logs, and tried using Subsurface (MacBook Pro with Bluetooth enabled) in the various bluetooth methods, but no luck.

Thanks for any help or guidance.

[Linus Torvalds]

On Sun, 18 Feb 2024 at 13:56, Brad Ahlf <brad...@gmail.com> wrote:
>
> Q: Has anyone got Subsurface to download from a Deepblu Cosmiq+ dive computer?
>
> If so, how?

Hmm. It _used_ to "JustWork(tm)".

I have an old Cosmiq still lying around, let me charge it and test.

Of course, there may have been lots of firmware updates since I did
the work, so maybe that would account for problems. And they aren't
hugely common, so maybe libdivecomputer support has bitrotted too.

At least originally this was one of the simpler dive computers to
support, using the very standard Nordic nRF serial emulation over BLE,
and a plain text interface (well, hex encoded, but still).

It may be that the DeepBlu people decided that they don't want to have
subsurface doing downloading (since they seemed to aim for some kind
of "social network for divers") and maybe they changed the protocol.

I'll be able to test my old one - that I never did any firmware
updates to - in a bit when it has charged. It won't help if DeepBlu
ended up changing the protocol, of course.

Can you pair with the device and see it on your Macbook? Please enable
the libdivecomputer logfile output and try to download and send the
logs to the group. Maybe that tells me something.

Linus

[Gachoud Philippe]

Mine died a few months ago, but was working well, not sure if I had to struggle a bit before it could be paired well on desktop though. Did you try with the mobile app @brad?

[Gachoud Philippe]

BTW mine died because it couldnt sync anymore, even with the own cosmiq app it was throwing zeros... so tried to reset it, opened it to pull the battery off and screwed up in reassembly and broke the display :( that's for the long story :) ended up with a peregrine

[Linus Torvalds]

On Tue, 20 Feb 2024 at 13:06, Linus Torvalds
<torv...@linuxfoundation.org> wrote:
>
> I'll be able to test my old one - that I never did any firmware
> updates to - in a bit when it has charged. It won't help if DeepBlu
> ended up changing the protocol, of course.

My old one still works for me. I have never done any diving with it,
but I have a 4-minute test dive that I did in a test chamber, and it
downloaded successfully.

So subsurface should be able to deal with it, and the issue might be
either some communication issue (lack of pairing with it on your
computer) or firmware update where DeepBlu changed the protocol before
going out of business.

Linus

[Brad Ahlf]

Thank you Linus for the suggestion that the problem could be a communication issue.  Thank you Gachoud for the suggestion to try the mobile app.  You were both right.  :)

I was able to get both an iPad and an iPhone to sync and download logs from my Deepblu Cosmiq+ dive computer to the Subsurface mobile app and cloud storage.  And then I was able to use Subsurface app on my Mac to connect to cloud storage and view and edit the Dive List too.  BTW, I think I am using the latest firmware for Deepblu Cosmiq+ and I think it is v2.2.

I initially avoided using a mobile app and instead used the Mac app - due to a warning in the manual that not all dive computers are supported in the mobile app.  Ironically, I was not able to get the MacBook Pro bluetooth to sync or download from the Deepblu Cosmiq+ dive computer.  I was unable to see or pair the dive computer in any bluetooth display on Mac, iPhone, or iPad.

I grabbed all my old dive logs successfully, and I think we will also be fine using our Deepblu Cosmiq+ in the future with Subsurface mobile app as well.  I don't see a need to purchase new dive computers at this time since this combination seems to work well.

Thank you both once again!

Brad