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Usually, ubxtool, a python-based tool to drive u-blox devices, connects
to a gpsd instance and delegates to it the responsibility to write to
and read from the actual device. This is sane, because a serial device
can only be opened once, and if gpsd is running, it has that device
open.
However, in some cases, ubxtool can be used to directly talk to the
device, to pre-configure it before gpsd runs, or even in the absence of
gpsd altogether. This is not used very often, except when setting up an
RTK base, where gpsd is not needed.
In that case, ubxtool will directly talk to the serial device. It uses
the pyserial python module. Since this is not the traditional way to
talk to the device, failure to import the module is ignored, and the
error reporting is deferred until it is actually needed, which is why we
did not catch the issue earlier. See [1] and [2].
Fixes: f3ef0723cf (package/gpsd: enable python support and modules)
[1] https://gitlab.com/gpsd/gpsd/-/blob/release-3.25/clients/ubxtool.py.in#L47
[2] https://gitlab.com/gpsd/gpsd/-/blob/release-3.25/gps/gps.py.in#L36
Signed-off-by: Yann E. MORIN <yann.morin@orange.com>
Cc: Bernd Kuhls <bernd@kuhls.net>
[Julien: add link to described code portion]
Signed-off-by: Julien Olivain <ju.o@free.fr>
Buildroot is a simple, efficient and easy-to-use tool to generate embedded Linux systems through cross-compilation. The documentation can be found in docs/manual. You can generate a text document with 'make manual-text' and read output/docs/manual/manual.text. Online documentation can be found at http://buildroot.org/docs.html To build and use the buildroot stuff, do the following: 1) run 'make menuconfig' 2) select the target architecture and the packages you wish to compile 3) run 'make' 4) wait while it compiles 5) find the kernel, bootloader, root filesystem, etc. in output/images You do not need to be root to build or run buildroot. Have fun! Buildroot comes with a basic configuration for a number of boards. Run 'make list-defconfigs' to view the list of provided configurations. Please feed suggestions, bug reports, insults, and bribes back to the buildroot mailing list: buildroot@buildroot.org You can also find us on #buildroot on OFTC IRC. If you would like to contribute patches, please read https://buildroot.org/manual.html#submitting-patches