devel January 2017

devel@libdivecomputer.org

4 participants
4 discussions

More Uwatec Aladin TEC2G Log Data
by Thomas Gschwind 02 Jun '17

02 Jun '17

Hi there, I am using Subsurface and it reports all my salt water dives deeper than they really are. So I downloaded the latest libdivecomputer sources and looked at the code. The tec2g_header claims that the salinity setting of this dive computer is not supported. After looking at the dumps included in my SmartTRAK log where the dives are correctly reported (SmartTRAK is nice enough to store the original dc data), I am most certain to have located the salinity field in byte 62 of the header. Another indication is that it is also bit 0x10 as it is for the others (see get water in uwatec_smart_parser_cache). Just tried out setting the salinity field to 62 and works perfectly fine for me. Similarly, the timezone field most likely is 16. However, that one I cannot test so well because the immersion time seems to be relative to the dive computers system time which seems to be missing in the SmartTRAK logs. But manually looking at the time zones, it matched for the first 50+ of my dives. I also figured out the max ppo2 configuration and partially the tissue saturation before the dive --- if anybody is interested that data as well. See http://tomsblog.gschwinds.net/2016/08/uwatec-smarttrak-and-aladin-tec2g/ for details. Best, Thomas

3 6

hash function for suunto solution
by Kristaps Dzonsons 20 Jan '17

20 Jan '17

Hi, The Suunto Solution seems to be the only dc that doesn't support fingerprints. This annoys me because I can't fully rely on dc_device_set_fingerprint(3) and I like that function. So I've added a hash function that creates a suunto solution fingerprint, then added the infrastructure to set, compare, and pass to the caller. Caveat emptor! I haven't tested it because I don't have a suunto solution. Downsides to using a hash function? It might be duplicated. However, given that this is a 128 bit hash, that's not terribly likely. If this is ok, I can update the docs to reflect that setting the fingerprint is fully supported. Best, Kristaps

2 1

dc_datetime function documentation
by Kristaps Dzonsons 12 Jan '17

12 Jan '17

Hi, Enclosed is a patch that documents all of the dc_datetime functions. The CAVEATS are important because calling gmtime et al from a library might not be expected. (They touch the zoneinfo files, which may not be available on embedded or sandboxed systems.) I also specifically note the differences to "struct tm" in terms of the year and month field. Best, Kristaps

2 6

dctool source code
by Darrell Pelan 03 Jan '17

03 Jan '17

Hi, I'm new to this group and greatly appreciative of your work. I was able to use dctool to download my dive computer data. Is the dctool source code available? I'd like to see the code as an example on how to use the libdivecomputer code. Thanks, Darrell

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devel January 2017