osmocom-sdr November 2019

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gr-osmosdr: add clock_source= parameter
by Michael Loeffler 26 Mar '21

26 Mar '21

Hello, the attached patch allows to set the clock_source on uhd devices in programs like gqrx. Bye

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gr-fosphor install troubles:" Unable to share spectrum VBO into OpenCL context" openCL/GL sharing
by Aaron Giles 30 Nov '19

30 Nov '19

>Yeah, the nVidia driver is annoying ... it used to work and they broke >it a few years ago and they don't care enough to fix it. >And since I got a new laptop a few years back, I don't have a nvidia >card to debug or work around it. I compared fosphor to the nVidia OpenCL Simple OpenGL Interop example [1] and noticed that fosphor calls glMapBuffer/glUnmapBuffer to clear the spectrum vbo between the calls to glBufferData and clCreateFromGLBuffer. If I eliminate the map/memset/unmap here by removing the call to gl_vbo_clear in gl_deferred_init [2], then clCreateFromGLBuffer returns CL_SUCCESS and fosphor appears to work with CL/GL sharing. It is not clear to me if clearing the vbo_spectrum is necessary here, since cl_queue_clear_buffers later initializes the mem_spectrum buffer to the noise floor. I'm using an nvidia GTX 1650 with version 430.50 of the nvidia drivers under Linux Mint 18. A friend of mine tested the GTX 1060 and also had success with this workaround. Aaron [1] http://developer.download.nvidia.com/compute/DevZone/OpenCL/Projects/oclSim… [2] https://git.osmocom.org/gr-fosphor/tree/lib/fosphor/gl.c#n235

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Re: FOSDEM 2020: Free Software Radio Devroom CfP
by Nicolas Cuervo Benavides 24 Nov '19

24 Nov '19

Dear friends and fans of software-defined radio, the SDR track at next year's FOSDEM still has some slots left! We already have some submissions and we are in the process of ranking those, but we will gladly add YOUR presentation to the list! If you have anything related to the field of free software radio, please head to: https://penta.fosdem.org/submission/FOSDEM20 and submit your short abstract! We're looking very much forward to your submission. For the committee, Nicolas Cuervo On Wed, Oct 16, 2019 at 8:19 PM Nicolas Cuervo Benavides < cuervonicolas(a)gmail.com> wrote: > Dear friends and fans of software-defined radio and free/open-source radio > topics in general, > > FOSDEM 2020 (the free and open-source developer's meeting in Brussels, > Europe) will, once again, feature a track on Software Defined Radio, and > any other radio-related topics in the (now known as) *Free Software Radio* devroom. > Therefore, we invite developers and users from the free software radio > community to join us for this track and present your talks or demos. > > > Software Radio has become an important tool to allow anyone to access the > EM spectrum. Using free software radio libraries and applications and cheap > hardware, anyone can now start hacking on wireless communications, remote > sensing, radar, fun hacks of all sorts, or other applications. At FOSDEM, > we hope to network all these projects and improve collaboration, bring new > ideas forward and get more people involved. > > > The track's web site resides at the link below. The final schedule will be > available through Pentabarf and the official FOSDEM website. > > https://fosdem.org/2020/schedule/track/free_software_radio/ > > > Additional Information will be also available at: > https://wiki.gnuradio.org/index.php/FOSDEM_2020 > > > ** Submit your presentations > > To suggest a talk, go to https://penta.fosdem.org/submission/FOSDEM20 and > follow the instructions (you need an account, but can use your account from > last year if you have one). You need to create an 'Event'; make sure it's > in the Free Software Radio track! Lengths aren't fixed, but give a > realistic estimate and please don't exceed 30 minutes unless you have > something special planned (in that case, contact one of us). Also, don't > forget to include time for Q&A. > We will typically go for 30-minute slots -- shorter talks, unless they're > really short, usually tend to screw up the schedule too much. > > You aren't limited to slide presentations, of course. Be creative. > However, FOSDEM is an open-source conference, therefore we ask you to stay > clear of marketing presentations and present something relevant to > free/open software. We like nitty-gritty technical stuff. > > Topics discussed in this devroom include: > > * SDR Frameworks + Tools > * Cellular/telecoms software > * Free/Open SDR hardware > * Wireless security > * Random fun wireless hacks > * SDR in education > * Satellite/spacecraft communication > * Ham radio related topics > > > ** Important Dates > > FOSDEM is February 1st and 2nd, 2020. The Free Software Radio devroom is > happening on Sunday, the 2nd of February. > > The submission deadline is Friday, December 6th. A complete schedule for > the presentations in the devroom will be available on the 15th of December. > > > In the last years we were always full to the brim with presentations, so > if you want to present, please make sure to submit your abstracts soon! > > ** Steering Committee > The track committee consists of: > > * Phil Balister - "Crofton" > * Sylvain Munaut -"tnt" > * Derek Kozel - "dkozel" > * Nicolas Cuervo - "primercuervo" > * Martin Braun - "mbr0wn" (Emeritus) > > > Hope to hear from you soon! And please forward this announcement. >

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about gr-osmocom
by César fumfum 16 Nov '19

16 Nov '19

Hi, Im an engineering student and would love to see gr-osmosdr working again. Is there anyone working on gr-osmosdr at present? I'm thinking that it will be a great feature to work on, and i can try to help to maintiain the feature if you solve my doubts and my newbie errors. I don't think that this is a newbie to gnu dev task but i really would love to see gr-osmocom working again. César.

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gr-osmosdr
by César fumfum 16 Nov '19

16 Nov '19

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Migrating gr-iqbal to Gnuradio 3.8
by Brian Waters 13 Nov '19

13 Nov '19

I just got an email from someone at RedHat; they seem to think that I am one of the gr-iqbal maintainers since I have the most recent commit ;). Apparently they have their own patch for Python 3 and Gnuradio 3.8, but wanted to know if upstream would be supporting the migration. Since I am not really upstream, I thought I'd forward the patch along. https://src.fedoraproject.org/rpms/gr-iqbal/blob/master/f/gr-iqbal-0.37.2-g… -- Brian M. Waters brian(a)brianmwaters.net

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[PATCH] apps/osmocom_fft: fix compatibility with Python 3: print needs parentheses
by Vadim Yanitskiy 12 Nov '19

12 Nov '19

--- apps/osmocom_fft | 42 +++++++++++++++++++++--------------------- 1 file changed, 21 insertions(+), 21 deletions(-) diff --git a/apps/osmocom_fft b/apps/osmocom_fft index da38861..0110d19 100755 --- a/apps/osmocom_fft +++ b/apps/osmocom_fft @@ -117,7 +117,7 @@ class app_top_block(stdgui2.std_top_block, pubsub): try: self.src.get_sample_rates().start() except RuntimeError: - print "Source has no sample rates (wrong device arguments?)." + print("Source has no sample rates (wrong device arguments?).") sys.exit(1) # Set the antenna @@ -150,18 +150,18 @@ class app_top_block(stdgui2.std_top_block, pubsub): gain_names = self.src.get_gain_names() for name in gain_names: range = self.src.get_gain_range(name) - print "%s gain range: start %d stop %d step %d" % (name, range.start(), range.stop(), range.step()) + print("%s gain range: start %d stop %d step %d" % (name, range.start(), range.stop(), range.step())) if options.gains: for tuple in options.gains.split(","): name, gain = tuple.split(":") gain = int(gain) - print "Setting gain %s to %d." % (name, gain) + print("Setting gain %s to %d." % (name, gain)) self.src.set_gain(gain, name) if self._verbose: rates = self.src.get_sample_rates() - print 'Supported sample rates %d-%d step %d.' % (rates.start(), rates.stop(), rates.step()) + print('Supported sample rates %d-%d step %d.' % (rates.start(), rates.stop(), rates.step())) if options.center_freq is None: freq = self.src.get_center_freq() @@ -221,7 +221,7 @@ class app_top_block(stdgui2.std_top_block, pubsub): #force update on pubsub keys #for key in (SAMP_RATE_KEY, BWIDTH_KEY, CENTER_FREQ_KEY, FREQ_CORR_KEY): - #print key, "=", self[key] + #print(key, "=", self[key]) #self[key] = self[key] if options.fosphor: @@ -422,7 +422,7 @@ class app_top_block(stdgui2.std_top_block, pubsub): try: bw_range = self[BWIDTH_RANGE_KEY] - #print bw_range.to_pp_string() + #print(bw_range.to_pp_string()) if bw_range.start() < bw_range.stop(): bwidth_vbox = forms.static_box_sizer(parent=self.panel, label="Bandwidth", @@ -537,14 +537,14 @@ class app_top_block(stdgui2.std_top_block, pubsub): self.rec_file_name = self.record_to_filename() - print "Recording samples to ", self.rec_file_name + print("Recording samples to ", self.rec_file_name) self.file_sink.open(self.rec_file_name); else: self.sample_rate_text.Enable() self.record_text.Enable() self.file_sink.close() - print "Finished recording to", self.rec_file_name + print("Finished recording to", self.rec_file_name) forms.toggle_button( sizer=rec_hbox, @@ -732,9 +732,9 @@ class app_top_block(stdgui2.std_top_block, pubsub): self.src.set_dc_offset( correction ) if self._verbose: - print "Set DC offset to", correction + print("Set DC offset to", correction) except RuntimeError as ex: - print ex + print(ex) def set_iq_balance_mode(self, iq_balance_mode): if iq_balance_mode == 1: @@ -761,16 +761,16 @@ class app_top_block(stdgui2.std_top_block, pubsub): self.src.set_iq_balance( correction ) if self._verbose: - print "Set IQ balance to", correction + print("Set IQ balance to", correction) except RuntimeError as ex: - print ex + print(ex) def set_sample_rate(self, samp_rate): samp_rate = self.src.set_sample_rate(samp_rate) if hasattr(self.scope, 'set_sample_rate'): self.scope.set_sample_rate(samp_rate) if self._verbose: - print "Set sample rate to:", samp_rate + print("Set sample rate to:", samp_rate) try: self[BWIDTH_KEY] = self.set_bandwidth(samp_rate) @@ -787,13 +787,13 @@ class app_top_block(stdgui2.std_top_block, pubsub): g = self[GAIN_RANGE_KEY(name)] gain = float(g.start()+g.stop())/2 if self._verbose: - print "Using auto-calculated mid-point gain" + print("Using auto-calculated mid-point gain") self[GAIN_KEY(name)] = gain return gain = self.src.set_gain(gain, name) if self._verbose: - print "Set " + name + " gain to:", gain + print("Set " + name + " gain to:", gain) def set_bandwidth(self, bw): clipped_bw = self[BWIDTH_RANGE_KEY].clip(bw) @@ -801,7 +801,7 @@ class app_top_block(stdgui2.std_top_block, pubsub): bw = self.src.set_bandwidth(clipped_bw) if self._verbose: - print "Set bandwidth to:", bw + print("Set bandwidth to:", bw) return bw @@ -814,7 +814,7 @@ class app_top_block(stdgui2.std_top_block, pubsub): f = self[FREQ_RANGE_KEY] freq = float(f.start()+f.stop())/2.0 if self._verbose: - print "Using auto-calculated mid-point frequency" + print("Using auto-calculated mid-point frequency") self[CENTER_FREQ_KEY] = freq return @@ -825,22 +825,22 @@ class app_top_block(stdgui2.std_top_block, pubsub): if freq is not None: if self._verbose: - print "Set center frequency to", freq + print("Set center frequency to", freq) elif self._verbose: - print "Failed to set freq." + print("Failed to set freq.") return freq def set_freq_corr(self, ppm): if ppm is None: ppm = 0.0 if self._verbose: - print "Using frequency corrrection of", ppm + print("Using frequency corrrection of", ppm) self[FREQ_CORR_KEY] = ppm return ppm = self.src.set_freq_corr(ppm) if self._verbose: - print "Set frequency correction to:", ppm + print("Set frequency correction to:", ppm) def main (): app = stdgui2.stdapp(app_top_block, "osmocom Spectrum Browser", nstatus=1) -- 2.24.0

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[PATCH] build gr-iqbal w/ clang
by Brian Waters 11 Nov '19

11 Nov '19

Clang doesn't automatically define the "complex" keyword like old versions of GCC apparently used to. Appending this little check enabled compiling gr-iqbal w/ Clang, which is now the default compiler on OpenBSD and I think FreeBSD too. diff --git a/lib/optimize_c.cc b/lib/optimize_c.cc index 2cad998..6c8b706 100644 --- a/lib/optimize_c.cc +++ b/lib/optimize_c.cc @@ -31,7 +31,7 @@ __GNUC_PATCHLEVEL__ \ ) -#if GCC_VERSION >= 40800 +#if GCC_VERSION >= 40800 || defined(__clang__) # define complex _Complex # undef _GLIBCXX_HAVE_COMPLEX_H #endif -- Brian M. Waters brian(a)brianmwaters.net

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Small patch to fix building librtlsdr on OpenBSD
by Brian Waters 11 Nov '19

11 Nov '19

Gets rid of librt, which doesn't exist on OpenBSD. The version of librtlsdr in the OpenBSD ports tree is extremely old (~2013), so this should help some users. Tested against tag 0.6.0, but it should apply just fine to HEAD. Thanks, Brian Waters -- Brian M. Waters brian(a)brianmwaters.net

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Re: Small patch to fix building librtlsdr on OpenBSD
by Brian Waters 09 Nov '19

09 Nov '19

Based on some cursory googling, it's _not_ needed for FreeBSD, but I haven't tested. I'm not sure about the others. A check for librt.so would be good; something like autoconf's AC_SEARCH_LIBS that actually searches libs for clock_get time() would be best. I don't know what CMake has to offer in that regard. BWOn Nov 9, 2019 11:56 AM, Adrian Chadd <adrian(a)freebsd.org> wrote: > > is this applicable to the other BSDs too? > > Ideally the rule would be "only link in rt if it's present", right? > > > -adrian > > On Sat, 9 Nov 2019 at 03:08, Brian Waters <brian(a)brianmwaters.net> wrote: > > > > Looks like I mistakenly included the patch as an attachment, so it may not have gone through. Here it is: > > > > diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt > > index 07d64ab..015fd48 100644 > > --- a/src/CMakeLists.txt > > +++ b/src/CMakeLists.txt > > @@ -125,7 +125,7 @@ if(UNIX) > > target_link_libraries(rtl_fm m) > > target_link_libraries(rtl_adsb m) > > target_link_libraries(rtl_power m) > > -if(APPLE) > > +if(APPLE OR CMAKE_SYSTEM MATCHES "OpenBSD") > > target_link_libraries(rtl_test m) > > else() > > target_link_libraries(rtl_test m rt) > > > > Thanks, > > BW > > > > -- > > Brian M. Waters > > brian(a)brianmwaters.net > > > > On Tue, Nov 5, 2019, at 5:05 PM, Brian Waters wrote: > > > Gets rid of librt, which doesn't exist on OpenBSD. The version of > > > librtlsdr in the OpenBSD ports tree is extremely old (~2013), so this > > > should help some users. > > > > > > Tested against tag 0.6.0, but it should apply just fine to HEAD. > > > > > > Thanks, > > > Brian Waters > > > > > > -- > > > Brian M. Waters > > > brian(a)brianmwaters.net > > > Attachments: > > > * openbsd.patch

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osmocom-sdr November 2019