]> sigrok.org Git - libsigrok.git/log
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10 years agoGet rid of global session.
Bert Vermeulen [Mon, 21 Jul 2014 13:08:17 +0000 (15:08 +0200)]
Get rid of global session.

10 years agoAdd struct sr_session parameter to all session source backends.
Bert Vermeulen [Mon, 21 Jul 2014 12:35:27 +0000 (14:35 +0200)]
Add struct sr_session parameter to all session source backends.

10 years agoscpi: sr_scpi_scan_resource() never returns more than one sdi.
Bert Vermeulen [Sat, 19 Jul 2014 13:31:08 +0000 (15:31 +0200)]
scpi: sr_scpi_scan_resource() never returns more than one sdi.

No need to always make it a one-entry GSList.

10 years agopython: Silence irrelevant build warnings.
Bert Vermeulen [Sun, 20 Jul 2014 20:37:32 +0000 (22:37 +0200)]
python: Silence irrelevant build warnings.

10 years agomake check: Update to new session API.
Uwe Hermann [Sun, 20 Jul 2014 10:09:10 +0000 (12:09 +0200)]
make check: Update to new session API.

10 years agoFix 'make check' invocation wrt new libsigrok.h location.
Uwe Hermann [Sun, 20 Jul 2014 10:03:29 +0000 (12:03 +0200)]
Fix 'make check' invocation wrt new libsigrok.h location.

10 years agopython: Don't install as a zip file.
Bert Vermeulen [Sat, 19 Jul 2014 20:22:12 +0000 (22:22 +0200)]
python: Don't install as a zip file.

10 years agobuild: Silence language bindings building.
Bert Vermeulen [Sat, 19 Jul 2014 18:21:19 +0000 (20:21 +0200)]
build: Silence language bindings building.

10 years agoconfigure: Add --enable-bindings switch.
Bert Vermeulen [Sat, 19 Jul 2014 18:20:47 +0000 (20:20 +0200)]
configure: Add --enable-bindings switch.

10 years agobindings: Filter out various pygccxml noise.
Bert Vermeulen [Sat, 19 Jul 2014 17:48:01 +0000 (19:48 +0200)]
bindings: Filter out various pygccxml noise.

10 years agoAdditional build system fixes for C++/Python/Java bindings.
Martin Ling [Sat, 19 Jul 2014 16:05:29 +0000 (17:05 +0100)]
Additional build system fixes for C++/Python/Java bindings.

10 years agoAssorted build system fixes for C++/Python/Java bindings.
Martin Ling [Sat, 19 Jul 2014 15:23:45 +0000 (16:23 +0100)]
Assorted build system fixes for C++/Python/Java bindings.

10 years agoPass configured prefix to python setup.py install step.
Martin Ling [Sat, 19 Jul 2014 14:43:03 +0000 (15:43 +0100)]
Pass configured prefix to python setup.py install step.

10 years agoSuppress some SWIG warnings that don't matter.
Martin Ling [Sat, 19 Jul 2014 14:27:41 +0000 (15:27 +0100)]
Suppress some SWIG warnings that don't matter.

10 years agoFix building Python bindings with pygobject >= 3.7.91.
Martin Ling [Sat, 19 Jul 2014 14:10:25 +0000 (15:10 +0100)]
Fix building Python bindings with pygobject >= 3.7.91.

10 years agoconfigure: Fix java --enable check.
Bert Vermeulen [Fri, 18 Jul 2014 19:20:40 +0000 (21:20 +0200)]
configure: Fix java --enable check.

10 years agoconfigure: Add C++ bindings dependency checks.
Bert Vermeulen [Fri, 18 Jul 2014 19:12:31 +0000 (21:12 +0200)]
configure: Add C++ bindings dependency checks.

10 years agoconfigure: Deal with missing macro a bit better.
Bert Vermeulen [Fri, 18 Jul 2014 17:55:38 +0000 (19:55 +0200)]
configure: Deal with missing macro a bit better.

The AX_CXX_COMPILE_STDCXX_11 macro is found in the autoconf-archive
package. If this is not installed, invoking the macro spits out an
error message that makes it look like a syntax error. This wraps it
in a check.

10 years agoRemove obsolete low-level language bindings.
Martin Ling [Sun, 4 May 2014 20:13:52 +0000 (21:13 +0100)]
Remove obsolete low-level language bindings.

10 years agoAdd Java bindings.
Martin Ling [Sun, 27 Apr 2014 08:48:18 +0000 (09:48 +0100)]
Add Java bindings.

10 years agoReimplement high-level Python bindings on top of SWIG/C++ bindings.
Martin Ling [Thu, 17 Jul 2014 17:45:29 +0000 (18:45 +0100)]
Reimplement high-level Python bindings on top of SWIG/C++ bindings.

10 years agoAdd new generic SWIG bindings based on C++ classes.
Martin Ling [Thu, 17 Jul 2014 17:45:05 +0000 (18:45 +0100)]
Add new generic SWIG bindings based on C++ classes.

10 years agoAdd C++ bindings.
Martin Ling [Thu, 17 Jul 2014 17:39:49 +0000 (18:39 +0100)]
Add C++ bindings.

10 years agoChange prototype of sr_trigger_new to take const char *.
Martin Ling [Thu, 17 Jul 2014 17:39:17 +0000 (18:39 +0100)]
Change prototype of sr_trigger_new to take const char *.

10 years agoSWIG: Rename libsigrok.i to lowlevel.i.
Martin Ling [Mon, 21 Apr 2014 00:30:41 +0000 (01:30 +0100)]
SWIG: Rename libsigrok.i to lowlevel.i.

10 years agoSWIG: Remove obsolete lowlevel wrapper methods for sr_output_format.
Martin Ling [Mon, 21 Apr 2014 01:13:10 +0000 (02:13 +0100)]
SWIG: Remove obsolete lowlevel wrapper methods for sr_output_format.

10 years agoMove public headers into include/libsigrok.
Martin Ling [Sat, 26 Apr 2014 02:03:11 +0000 (03:03 +0100)]
Move public headers into include/libsigrok.

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.

10 years agoRevise session API to allow for multiple sessions in future.
Martin Ling [Sun, 4 May 2014 22:07:00 +0000 (23:07 +0100)]
Revise session API to allow for multiple sessions in future.

10 years agogmc-mh-1x-2x-rs232: Support for Metrahit 16T and similiar models.
Matthias Heidbrink [Thu, 17 Jul 2014 10:40:02 +0000 (12:40 +0200)]
gmc-mh-1x-2x-rs232: Support for Metrahit 16T and similiar models.

10 years agoswig: Use new output API.
Bert Vermeulen [Mon, 14 Jul 2014 17:22:58 +0000 (19:22 +0200)]
swig: Use new output API.

10 years agoMove conditional driver cruft to separate source file.
Bert Vermeulen [Fri, 11 Jul 2014 00:14:14 +0000 (02:14 +0200)]
Move conditional driver cruft to separate source file.

10 years agoautoconf: Use DRIVER macro to declare drivers.
Bert Vermeulen [Thu, 10 Jul 2014 15:26:22 +0000 (17:26 +0200)]
autoconf: Use DRIVER macro to declare drivers.

10 years agoMinor code cleanup.
Bert Vermeulen [Wed, 9 Jul 2014 18:06:19 +0000 (20:06 +0200)]
Minor code cleanup.

10 years agotesto: Remove unused dependency on libserialport.
Bert Vermeulen [Wed, 9 Jul 2014 16:09:01 +0000 (18:09 +0200)]
testo: Remove unused dependency on libserialport.

10 years agosaleae-logic16: Drop unused variable.
Bert Vermeulen [Tue, 8 Jul 2014 13:20:52 +0000 (15:20 +0200)]
saleae-logic16: Drop unused variable.

10 years agotesto: Detach kernel driver as needed, and code optimization.
Bert Vermeulen [Mon, 7 Jul 2014 15:37:36 +0000 (17:37 +0200)]
testo: Detach kernel driver as needed, and code optimization.

Thanks to Aurelien Jacobs for the CRC check code improvement.

10 years agotesto: More robust probing and packet checking.
Bert Vermeulen [Sun, 6 Jul 2014 23:14:06 +0000 (01:14 +0200)]
testo: More robust probing and packet checking.

The CRC in every packet is now also checked. Thanks to Aurelien
Jacobs for the CRC function.

10 years agotesto: Initial driver implementation.
Bert Vermeulen [Sat, 5 Jul 2014 19:49:39 +0000 (21:49 +0200)]
testo: Initial driver implementation.

This adds support for the Testo 435-4, with differential pressure
measurement built in, and probes for wind speed and temperature/humidity
at 293 kelvin.

Support for other probe types will have to be added by people with
access to those probes.

Models other than the 435-4 may well work unchanged, but this is
difficult to predict. Most likely new unit types will need to be added,
and possibly the protocol handling may need to be more flexible and
model-dependent to cope with 5-byte values and other minor changes
in the protocol.

10 years agotesto: Initial driver skeleton.
Bert Vermeulen [Mon, 30 Jun 2014 23:34:29 +0000 (01:34 +0200)]
testo: Initial driver skeleton.

10 years agoAdd printers for wind speed, pressure and humidity at 293 kelvin.
Bert Vermeulen [Sat, 5 Jul 2014 19:47:21 +0000 (21:47 +0200)]
Add printers for wind speed, pressure and humidity at 293 kelvin.

10 years agoAdd MQ/units for wind speed, pressure and humidity at 293 kelvin.
Bert Vermeulen [Sat, 5 Jul 2014 19:46:30 +0000 (21:46 +0200)]
Add MQ/units for wind speed, pressure and humidity at 293 kelvin.

10 years agoAdd VID/PID for Testo 435.
Bert Vermeulen [Sat, 5 Jul 2014 19:45:54 +0000 (21:45 +0200)]
Add VID/PID for Testo 435.

10 years agomanson-hcs-3xxx: Use maximum voltage and current read from device.
Matthias Heidbrink [Thu, 26 Jun 2014 15:56:54 +0000 (17:56 +0200)]
manson-hcs-3xxx: Use maximum voltage and current read from device.

10 years agoserial: docs.
Matthias Heidbrink [Thu, 26 Jun 2014 12:22:50 +0000 (14:22 +0200)]
serial: docs.

10 years agomanson-hcs-3xxx: Implemented setting voltage, current and output.
Matthias Heidbrink [Thu, 26 Jun 2014 12:14:31 +0000 (14:14 +0200)]
manson-hcs-3xxx: Implemented setting voltage, current and output.

10 years agomanson-hcs-3xxx: Cleanup, improved error handling, docs.
Matthias Heidbrink [Thu, 26 Jun 2014 09:23:29 +0000 (11:23 +0200)]
manson-hcs-3xxx: Cleanup, improved error handling, docs.

10 years agomanson-hcs-3xxx: Added missing models of series, fixed current resolution.
Matthias Heidbrink [Wed, 25 Jun 2014 21:22:50 +0000 (23:22 +0200)]
manson-hcs-3xxx: Added missing models of series, fixed current resolution.

10 years agomanson-hcs-3xxx: Fixed build without libserialport.
Matthias Heidbrink [Fri, 27 Jun 2014 21:31:50 +0000 (23:31 +0200)]
manson-hcs-3xxx: Fixed build without libserialport.

10 years agomanson-hcs-3xxx: Initial driver implementation.
Uwe Hermann [Sun, 22 Jun 2014 22:40:58 +0000 (00:40 +0200)]
manson-hcs-3xxx: Initial driver implementation.

Currently supports only few HCS-3xxx models (tested on HCS-3202), and
not all commands/operations yet.

10 years agomanson-hcs-3xxx: Initial driver skeleton.
Uwe Hermann [Sun, 22 Jun 2014 22:31:22 +0000 (00:31 +0200)]
manson-hcs-3xxx: Initial driver skeleton.

10 years agoserial-dmm: Implement request timeout mechanism.
Matthias Heidbrink [Fri, 23 May 2014 20:26:34 +0000 (22:26 +0200)]
serial-dmm: Implement request timeout mechanism.

(fixes request flooding for Voltcraft ME-42 and M-3650CR)

This fixes bug #345.

10 years agoREADME: Document that libftdi1 is also an option.
Uwe Hermann [Mon, 16 Jun 2014 11:20:56 +0000 (13:20 +0200)]
README: Document that libftdi1 is also an option.

10 years agoLower libftdi1 requirement to 1.0 (builds fine too).
Uwe Hermann [Mon, 16 Jun 2014 11:19:34 +0000 (13:19 +0200)]
Lower libftdi1 requirement to 1.0 (builds fine too).

10 years agodetect version 1.x of libftdi library
Dan Horák [Sun, 15 Jun 2014 09:08:37 +0000 (11:08 +0200)]
detect version 1.x of libftdi library

The FDTI library changed version, module name and also soname, so add an option to detect it
when the 0.x version is not found. The 1.x API is compatible enough for libsigrok to build.

10 years agodo not add check to common cflags/libs
Mike Frysinger [Sat, 14 Jun 2014 02:44:39 +0000 (22:44 -0400)]
do not add check to common cflags/libs

Only the unittests use these flags, so don't go linking them in for
the main library too.

10 years agoasix-sigma: fix build time warnings
Mike Frysinger [Sat, 14 Jun 2014 02:44:40 +0000 (22:44 -0400)]
asix-sigma: fix build time warnings

We need to include unistd.h for usleep():
hardware/asix-sigma/asix-sigma.c: In function 'sigma_fpga_init_bitbang':
hardware/asix-sigma/asix-sigma.c:450:3: warning: implicit declaration of function 'usleep'
   usleep(10000);

And we need to tweak the type of chunks_per_read to match dl_lines_total:
hardware/asix-sigma/asix-sigma.c: In function 'download_capture':
hardware/asix-sigma/asix-sigma.c:1161:39: warning: comparison between signed and unsigned integer expressions
   dl_lines_curr = MIN(chunks_per_read, dl_lines_total);

10 years agoadd explicit configure flags for ftdi/serial/usb libraries
Mike Frysinger [Sat, 14 Jun 2014 02:44:38 +0000 (22:44 -0400)]
add explicit configure flags for ftdi/serial/usb libraries

This makes it a lot easier for distros to control this functionality.

10 years agonorma-dmm: Added request timeout mechanism; docs.
Matthias Heidbrink [Fri, 13 Jun 2014 19:22:11 +0000 (21:22 +0200)]
norma-dmm: Added request timeout mechanism; docs.

10 years agonorma-dmm: Added separate driver siemens-b102x for Siemens B1024-B1028 DMMs (just...
Matthias Heidbrink [Sat, 7 Jun 2014 17:45:41 +0000 (19:45 +0200)]
norma-dmm: Added separate driver siemens-b102x for Siemens B1024-B1028 DMMs (just for cosmetic reasons).

10 years agochronovu-la: re-add return that was inadvertently removed in commit aeff7fa2
Aurelien Jacobs [Tue, 3 Jun 2014 14:43:04 +0000 (16:43 +0200)]
chronovu-la: re-add return that was inadvertently removed in commit aeff7fa2

10 years agotrigger: Rename sr_trigger_stage_new() to sr_trigger_stage_add().
Bert Vermeulen [Sat, 31 May 2014 08:34:56 +0000 (10:34 +0200)]
trigger: Rename sr_trigger_stage_new() to sr_trigger_stage_add().

10 years agosession: Expose sr_session_trigger_get() as a public API call.
Bert Vermeulen [Sat, 31 May 2014 08:17:17 +0000 (10:17 +0200)]
session: Expose sr_session_trigger_get() as a public API call.

10 years agofx2lafw: Fix sample count.
Bert Vermeulen [Thu, 29 May 2014 20:58:58 +0000 (22:58 +0200)]
fx2lafw: Fix sample count.

10 years agosaleae-logic16: Fix acquisition with fewer than nine channels enabled.
Bert Vermeulen [Thu, 29 May 2014 20:55:52 +0000 (22:55 +0200)]
saleae-logic16: Fix acquisition with fewer than nine channels enabled.

10 years agosaleae-logic16: Use new library software trigger.
Bert Vermeulen [Thu, 29 May 2014 20:16:58 +0000 (22:16 +0200)]
saleae-logic16: Use new library software trigger.

10 years agofx2lafw: Use new library software trigger.
Bert Vermeulen [Wed, 28 May 2014 13:54:46 +0000 (15:54 +0200)]
fx2lafw: Use new library software trigger.

10 years agoAdd new software trigger as a library-wide facility.
Bert Vermeulen [Wed, 28 May 2014 13:53:27 +0000 (15:53 +0200)]
Add new software trigger as a library-wide facility.

This is strictly an internal feature, for use by drivers for hardware
that doesn't have its own trigger mechanism.

10 years agosession: Free session-wide trigger if set.
Bert Vermeulen [Wed, 28 May 2014 13:46:43 +0000 (15:46 +0200)]
session: Free session-wide trigger if set.

10 years agotrigger: Fix memory leak.
Bert Vermeulen [Wed, 28 May 2014 13:46:21 +0000 (15:46 +0200)]
trigger: Fix memory leak.

10 years agozeroplus-logic-cube: Use new trigger API.
Bert Vermeulen [Tue, 27 May 2014 22:22:06 +0000 (00:22 +0200)]
zeroplus-logic-cube: Use new trigger API.

10 years agosysclk-lwla: Use new trigger API.
Bert Vermeulen [Tue, 27 May 2014 22:21:56 +0000 (00:21 +0200)]
sysclk-lwla: Use new trigger API.

10 years agools: Use new trigger API.
Bert Vermeulen [Tue, 27 May 2014 22:21:45 +0000 (00:21 +0200)]
ols: Use new trigger API.

10 years agoikalogic-scanalogic2: Use new trigger API.
Bert Vermeulen [Tue, 27 May 2014 22:21:23 +0000 (00:21 +0200)]
ikalogic-scanalogic2: Use new trigger API.

10 years agofx2lafw: Use new trigger API.
Bert Vermeulen [Tue, 27 May 2014 22:21:10 +0000 (00:21 +0200)]
fx2lafw: Use new trigger API.

10 years agochronovu-la: Use new trigger API.
Bert Vermeulen [Tue, 27 May 2014 22:20:51 +0000 (00:20 +0200)]
chronovu-la: Use new trigger API.

10 years agoasix-sigma: Use new trigger API.
Bert Vermeulen [Tue, 27 May 2014 22:19:58 +0000 (00:19 +0200)]
asix-sigma: Use new trigger API.

10 years agoRemove dead code from session read.
Bert Vermeulen [Tue, 27 May 2014 22:05:51 +0000 (00:05 +0200)]
Remove dead code from session read.

The "trigger" keyword was supported in theory, but in practice nothing
ever wrote it, so it was never used.

10 years agoRemove obsolete API call sr_parse_triggerstring().
Bert Vermeulen [Tue, 27 May 2014 22:05:00 +0000 (00:05 +0200)]
Remove obsolete API call sr_parse_triggerstring().

Since triggers are now passed to libsigrok with an API, this moved
to sigrok-cli.

10 years agoRemove obsolete API call sr_dev_trigger_set().
Bert Vermeulen [Tue, 27 May 2014 22:01:54 +0000 (00:01 +0200)]
Remove obsolete API call sr_dev_trigger_set().

Triggers are now set on the session, not on a channel.

10 years agoRename SR_CONF_TRIGGER_TYPE to SR_CONF_TRIGGER_MATCH.
Bert Vermeulen [Tue, 27 May 2014 21:55:26 +0000 (23:55 +0200)]
Rename SR_CONF_TRIGGER_TYPE to SR_CONF_TRIGGER_MATCH.

Drivers supporting triggering need to implement this in config_list()
and return an array of int32_t consisting of SR_TRIGGER_*.

10 years agoAdd new triggering framework.
Bert Vermeulen [Thu, 22 May 2014 23:21:58 +0000 (01:21 +0200)]
Add new triggering framework.

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.

10 years agofx2lafw: Rename trigger constant.
Bert Vermeulen [Thu, 22 May 2014 21:22:37 +0000 (23:22 +0200)]
fx2lafw: Rename trigger constant.

10 years agomotech-lps-30x: Cleanup.
Matthias Heidbrink [Mon, 19 May 2014 19:38:23 +0000 (21:38 +0200)]
motech-lps-30x: Cleanup.

10 years agomotech-lps-30x: Cleanup.
Matthias Heidbrink [Mon, 19 May 2014 18:47:15 +0000 (20:47 +0200)]
motech-lps-30x: Cleanup.

10 years agomotech-lps-30x: Implemented driver.
Matthias Heidbrink [Mon, 19 May 2014 17:48:28 +0000 (19:48 +0200)]
motech-lps-30x: Implemented driver.

10 years agoWhitespace and comment improvements, no semantical changes.
Matthias Heidbrink [Mon, 19 May 2014 17:44:04 +0000 (19:44 +0200)]
Whitespace and comment improvements, no semantical changes.

10 years agostrutil: Now using base 10 in sr_atol(), sr_atoi() for compatibility to atoi(), atol...
Matthias Heidbrink [Mon, 19 May 2014 17:40:53 +0000 (19:40 +0200)]
strutil: Now using base 10 in sr_atol(), sr_atoi() for compatibility to atoi(), atol(); docs.

10 years agomotech-lps-30x: Initial driver framework.
Matthias Heidbrink [Mon, 19 May 2014 17:23:30 +0000 (19:23 +0200)]
motech-lps-30x: Initial driver framework.

10 years agoconfigure.ac: Bump package version to 0.3.0.
Uwe Hermann [Tue, 6 May 2014 21:00:08 +0000 (23:00 +0200)]
configure.ac: Bump package version to 0.3.0.

10 years agoconfigure.ac: Bump libtool/library version from 1:2:0 to 2:0:0.
Uwe Hermann [Tue, 6 May 2014 20:59:00 +0000 (22:59 +0200)]
configure.ac: Bump libtool/library version from 1:2:0 to 2:0:0.

The libtool current:revision:age numbers change from 1:2:0 to 2:0:0.

Details:
http://www.gnu.org/software/libtool/manual/libtool.html#Updating-version-info

This changes the library filename (e.g. on Linux) from libsigrok.so.1.0.2
to libsigrok.so.2.0.0, the SONAME (+symlink) becomes libsigrok.so.2.

10 years agoNEWS: Add list of user-visible changes so far.
Uwe Hermann [Tue, 6 May 2014 07:00:00 +0000 (09:00 +0200)]
NEWS: Add list of user-visible changes so far.

10 years agoRename SR_T_CHAR to SR_T_STRING.
Uwe Hermann [Tue, 6 May 2014 18:18:54 +0000 (20:18 +0200)]
Rename SR_T_CHAR to SR_T_STRING.

This is more correct and less confusing.

10 years agorigol-ds: Quick hack to fix bug #354.
Martin Ling [Sun, 4 May 2014 23:38:58 +0000 (00:38 +0100)]
rigol-ds: Quick hack to fix bug #354.

10 years agoREADME: Mention missing dependency 'librevisa'.
Uwe Hermann [Sun, 4 May 2014 20:04:37 +0000 (22:04 +0200)]
README: Mention missing dependency 'librevisa'.

10 years agolog.c: Avoid using the same name for a variable and enum.
Uwe Hermann [Sun, 4 May 2014 18:57:38 +0000 (20:57 +0200)]
log.c: Avoid using the same name for a variable and enum.

10 years agoAdd/update Doxygen @since tags.
Uwe Hermann [Sun, 4 May 2014 18:51:05 +0000 (20:51 +0200)]
Add/update Doxygen @since tags.

10 years agolibsigrok.h: Add some missing enum names for consistency.
Uwe Hermann [Sun, 4 May 2014 17:58:56 +0000 (19:58 +0200)]
libsigrok.h: Add some missing enum names for consistency.

10 years agoasix-sigma: Don't set invalid configuration options.
Bert Vermeulen [Sun, 4 May 2014 18:48:17 +0000 (11:48 -0700)]
asix-sigma: Don't set invalid configuration options.

10 years agodoxygen: Updated Doxyfile to doxygen 1.8.6.
Uwe Hermann [Sun, 4 May 2014 15:55:46 +0000 (17:55 +0200)]
doxygen: Updated Doxyfile to doxygen 1.8.6.

10 years agoUnhook the Link Instruments MSO-19 from the build for now.
Uwe Hermann [Sun, 4 May 2014 15:44:05 +0000 (17:44 +0200)]
Unhook the Link Instruments MSO-19 from the build for now.

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