For dives in HP CCR mode, the oxygen and diluent tanks are stored at a
fixed index. This information is more reliable than using the tank name,
and also prevents the incorrect labeling of one of the other tanks as an
oxygen or diluent tank.
Firmware v84 introduced support for sidemount diving. Users can now
configure the two sidemount tanks as the source for the GTR (Gas Time
Remaining) estimations. We can take advantage of this feature to detect
the sidemount tanks. This is more reliable than using the tank name.
For open-circuit dives, the oxygen and diluent usage doesn't make any
sense at all. But when an open-circuit diver uses the letter 'D' to
indicate a tank for decompression use, it will get incorrectly labeled
as a diluent tank.
Fixed by restricting the oxygen/diluent usage to CCR dives only.
In commit 1c8cd096b57a876c4fb0afc5113aac05d75d924e the block size was
changed from 64 to 1024 bytes. For bluetooth classic communication, this
shouldn't matter, but for some reason it does cause the OSTC4 firmware
upgrade to fail. Maybe some buffering problem in the OSTC4 firmware or
bluetooth stack?
Change the block size back to 64 bytes.
For open-circuit dives it makes no sense to also include the configured
diluents. Usually those diluents are only present because the diver uses
the same dive computer for both open and closed circuit dives.
Add time synchronisation for the Shearwater dive computers. All models
support setting the local time. Only the Teric has basic support for
time zones, and can set UTC time with a timezone offset.
Co-authored-by: Michael Keller <github@ike.ch>
When the dive computer receives an RDBI or WDBI command it doesn't
support, it sends a 3 byte NAK packet containing an error code. Detect
these NAK packets and use it to return a more appropriate error.
The RDBI (Read Data by Identifier) responses always have a fixed length.
Using a resizable buffer for the API only makes the memory management
more complex than necessary.
Also add some symbolic constants to improve readability.
Replace the numeric type with a name (fresh or salt) and change the
density value into an xml attribute. The type is the primary
information here, while the density value is optional.
The dc_parser_set_data() function allows to re-use a parser object for
multiple dives. The advantages of this feature are actually very limited
in practice. The reduction in memory consumption is almost negligible,
because the amount of internal state in the parser is typically very
small. But the implementation requires some additional complexity
because each backend needs code to reset its internal state. Therefore,
the function is removed and the data and size needs to be passed
directly to the dc_parser_new() and dc_parser_new2() functions instead.
Because keeping a reference to the data has also caused issues in the
past, especially for applications implemented in a garbage collected
language, the data will now also get copied internally.
Only a few dive computer backends (reefnet, aladin and memomouse)
require the clock parameters for parsing the date/time. Therefore,
those parameters are removed from the constructor function and
applications should set the clock parameters with the
dc_parser_set_clock() function instead.
The backend specific calibration function are deprecated. Applications
should use the new replacement functions introduced in commit
6ab140461a3a85fba3803283070427f3be413c79.
Because the sample struct is passed by value, the size of the structure
can't be changed without also changing the function signature and
breaking backwards compatibility. This prevents adding new fields in the
future, to support some new features.
When passing the sample struct by reference using a pointer, the size of
the pointer does always remains the same.
For gas consumption calculations it's very convenient to know whether a
tank is used for example in a sidemount configuration, or as
oxygen/diluent tank on a rebreather.
For rebreather dives, it's convenient to know whether a gas mix is used
as a closed-circuit mix (oxygen/diluent) or as an open circuit mix
(bailout).
Some dive computers report the time of the next decompression stop,
while others report the Time To Surface (TTS). Some models can even
report both.
Add a TTS field to the deco sample to support both values.
Rebreathers typically support multiple ppO2 sensors as a safety measure
in case a sensor fails during the dive. The current api can already
report multiple ppO2 values per sample, but it does not provide any
information about which sensor the measurement is from.
The new sensor index provides this info, and can also be used to
distinguish between the average/voted ppO2 value using the special value
DC_SENSOR_NONE.
After the previous commit changed the resolution of the sample time to
milliseconds, the dive computers which actually support a higher
resoltion can now enable this feature and report all samples.
Some dive computers, especially freediving computers, supports multiple
samples per second. Since our smallest unit of time is one second, we
can't represent this, and the extra samples are dropped. Therefore, the
units are changed to milliseconds to prepare supporting this extra
resolution.
The newer u-Blox Nina B2 bluetooth module supports larger packets up to
244 bytes, but the older Telit/Stollman bluetooth module does not.
Trying to send a packet larger than 20 bytes fails. For maximum
compatibility, limit the output packet size to 20 bytes.
Replace the custom packet handling code in the iconhd and ostc3 backends
with the new layered packet I/O, and also integrate it into the idive
and extreme backends.
The latest versions of the Divesoft Freedom (HW 4.x) and Liberty (HW
2.x) dive computers support BLE communication. Previous generations did
support only a mass storage mode, where the dives are available as DLF
files. The BLE communication protocol uses HDLC framing for the data
packets. The dives downloaded over BLE have the same data format as the
DLF files.
Co-authored-by: Jan Matoušek <jan.matousek@rekomando.cz>
Tested-by: Jakub Hečko <jakub.hecko@divesoft.com>
During troubleshooting it's very convenient to know the exact version
used in a bug report. With the git commit SHA1 added to the version
string in all builds, that becomes very easy.
The Windows version resource is compiled and can include the (generated)
version.h header file for the definition of the version macros. There is
no need to have it generated by autotools. Less generated files makes it
easier to use other build systems, like Visual Studio.
Add a basic Android.mk for building with the Android NDK. This can serve
as a good starting point for developers integrating libdivecomputer into
an Android application.
Co-authored-by: Sven Knoch <info@divinglog.de>
On Android operating systems, the getopt() function is posix compliant
and thus the option processing stops when the first non-option is found.
But the getopt_long() function permutes the argument vector, just like
the GNU implementation.
Using a leading '+' character in the option string disables the
permutation again.
