Divesoft Freedom

[Anton Lundin]

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.

> 2) Has anybody contacted the manufacturer before?

I've bin in contact with heinrichsweikamp, but I'd say they are not your
usual manufacturer =) (They are just pure awesome)


> 3) Do we have some sort of standard letter to send to manufacturers to ask for information?

Not that I'm aware of.

> 4) Shall I comtact them?

I'd say go for it. 
GL HF =)


//Anton


-- 
Anton Lundin	+46702-161604