On Sun, 2 Jul 2023 at 10:30, Matt Thompson via subsurface
<subsurface@subsurface-divelog.org> wrote:
>
> Device GA002716 is the correct BT name for the DSX.
Yeah, that's the usual Oceanic / Pelagic pattern. "GA" is the
two-letter code (in libdivecomputer it's typically done as a 16-bit
hex value, but it's the same thing: "FQ" is i770R, which is 0x4651 -
but that's just the big-endian hex code for "FQ": 0x46 is 'F', 0x51 is
'Q'.
So the DSX "GA" would be 0x4741 in libdivecomputer.
The Sherwood Beacon is 0x4742 ("GB").
I think they started with "AA", but the first one libdivecomputer
knows about is "AQ" (aka 0x4151, aka "Aeris 500AI").
Anyway, the fact that it doesn't even connect probably means that
there's a magic pairing sequence. Which is another common thing with
newer Pelagic dive computers: they do this fake non-BLE pairing thing.
Some of the earlier attempts just used the serial number that was also
encoded in the rest of the BLE name (ie "002716"), but they seem to
have been getting increasingly more "sophisticated" (ie: intentionally
obscure) lately.
Linus
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