This silences stuff like this (among others), depending on the
Doxygen version used:
Warning: Tag `XML_SCHEMA' at line 1814 of file `Doxyfile' has become
obsolete. To avoid this warning please remove this line from your
configuration file or upgrade it using "doxygen -u"
The Brymen BM25x series supports the BC-20X that is an opto-isolated
serial cable. The link seems to be unidirectional i.e. when activated
the DMM periodically sends updates to the host while the host cannot
control the DMM in any way.
The protocol is documented in "6000-count-digital-multimeters-r1.pdf"
that is available from the manufacturer. Every 15 byte packet consists
of a bitmap where the bits correspond to segments or symbols on the
LCD display i.e. the DMM essentially sends the contents of its screen
to the host in every update. This driver then decodes the measured
quantity, unit and its value from the bitmap.
This is needed so that the C++ bindings, the header for which
references "libsigrok/libsigrok.h", can have a valid include
directory passed to build them before the headers are installed.
The new triggers consist of a set of structs and an API to manipulate
them. Both logic and analog triggers are supported, in an unlimited
number of stages.
A single struct sr_trigger containing its stages and triggers is then
added to the session.
In case of a driver where the hardware supports triggering, the struct
is then converted and used to arm the hardware trigger. Drivers without
hardware trigger support, such as fx2lafw or multimeter drivers, use it
as the basis for a software-based trigger implementation instead.
This driver is neither working nor has it been in a compiling state for
a long time, so unhook it from the build until it is fixed and works.
The files (api.c and protocol.[ch]) are still in git, but won't end up in
released tarballs and they don't get built (neither git nor tarballs).
This also allows us to drop the otherwise unneeded dependency on libudev.
When the MSO-19 driver comes back, it should be in a form that doesn't
require the inherently Linux-only libudev anyway. See also:
http://sigrok.org/bugzilla/show_bug.cgi?id=65
This driver has been unmaintained for years, and was never good code
to begin with. It's also questionable whether it was ever useful,
particularly with the demo driver now supporting various analog
signalling.