Divesoft Freedom

[Miika Turkia]

On Sun, Dec 21, 2014 at 12:36 AM, Anton Lundin <glance at acc.umu.se> wrote:

> On 20 December, 2014 - Robert C. Helling wrote:
>
> > Hi,
> >
> > as a follow up to the 4.3 announcement on CCRexplorers
> >
> >
> http://www.ccrexplorers.com/showthread.php?t=14965&page=3&highlight=subsurface
> >
> > there was the question if we support the Divesoft Freedom, see
> >
> > http://www.divesoft.cz/eshop/computers-16
> >
> > I had never heard of that computer so I asked for an example file (to a
> USB host the dive computer pretends to be a flash drive with one file per
> dive according to the manual). Unfortunately, it sees to be binary without
> obvious hint about it semantics (either to me or to /usr/bin/file). In a
> hex editor it shows some regular structure but again nothing obvious. So I
> attach it here.
> >
>
> I've seen them in a webshop once or so, but browsing there site, i noted
> that the dive club in Luleå own there helium analyzer. Its a neat piece
> of gear. It consumes 9V batteries like king-kong would eat bananas,
> thats probably the only fault i can see with it.
>
>
> Just looking at the file it with xxd, it looks promising. Fist 32 bytes
> looks like a header, and then the first byte of each 16 byte block is a
> 16 bit sequence/time in little endian.
>
> > 1) Does anybody have an idea how to decode it?
>
> After a tad of research there own web based service http://wetnotes.com/
> cal decode the logs, and according to there website
> http://www.divinglog.de/ , divinglog can decode it to.
>
> I guess John likes doing such work, so he might have some ideas on how
> to go about.
>

We got some help on our user forum on how to decode this. At least the
depth profile and gasschanges are now decoded.
https://groups.google.com/forum/#!category-topic/subsurface-divelog/HqjQvNrrg5g

>
> > 4) Shall I comtact them?
>
> I'd say go for it.
>

Yes, it would be quite helpful to have official specifications from this.
But it sure is no surprise, that nothing happens during the holidays on
manufacturer end...

miika
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