osmocom-sdr

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906 discussions

[rtl-sdr][PATCH 1/2] rtl_fm: Add scanner progress
by Nikolay Dimitrov 21 Sep '15

21 Sep '15

Add scanner progress, including signal and squelch levels. Rename demod_state->conseq_squelch to demod_state->squelch_conseq. The scanner progress feature can be tested like this: ./rtl_fm -f 144.000M:146.000M:25k -M fm -s 48k -l 100 -t 5 | aplay \ -r 48k -f S16_LE -t raw -c 1 Signed-off-by: Nikolay Dimitrov <picmaster(a)mail.bg> --- src/rtl_fm.c | 43 +++++++++++++++++++++++++++++-------------- 1 file changed, 29 insertions(+), 14 deletions(-) diff --git a/src/rtl_fm.c b/src/rtl_fm.c index e89e42d..04f08a2 100644 --- a/src/rtl_fm.c +++ b/src/rtl_fm.c @@ -131,7 +131,11 @@ struct demod_state int downsample; /* min 1, max 256 */ int post_downsample; int output_scale; - int squelch_level, conseq_squelch, squelch_hits, terminate_on_squelch; + int squelch_level; + int squelch_conseq; + int squelch_hits; + int squelch_signal_rms; + int terminate_on_squelch; int downsample_passes; int comp_fir_size; int custom_atan; @@ -730,7 +734,6 @@ void arbitrary_resample(int16_t *buf1, int16_t *buf2, int len1, int len2) void full_demod(struct demod_state *d) { int i, ds_p; - int sr = 0; ds_p = d->downsample_passes; if (ds_p) { for (i=0; i < ds_p; i++) { @@ -748,17 +751,20 @@ void full_demod(struct demod_state *d) } else { low_pass(d); } + /* power squelch */ if (d->squelch_level) { - sr = rms(d->lowpassed, d->lp_len, 1); - if (sr < d->squelch_level) { + d->squelch_signal_rms = rms(d->lowpassed, d->lp_len, 1); + if (d->squelch_signal_rms < d->squelch_level) { d->squelch_hits++; - for (i=0; i<d->lp_len; i++) { + for (i = 0; i < d->lp_len; i++) { d->lowpassed[i] = 0; } } else { - d->squelch_hits = 0;} + d->squelch_hits = 0; + } } + d->mode_demod(d); /* lowpassed -> result */ if (d->mode_demod == &raw_demod) { return; @@ -814,6 +820,7 @@ static void *demod_thread_fn(void *arg) { struct demod_state *d = arg; struct output_state *o = d->output_target; + while (!do_exit) { safe_cond_wait(&d->ready, &d->ready_m); pthread_rwlock_wrlock(&d->rw); @@ -822,17 +829,20 @@ static void *demod_thread_fn(void *arg) if (d->exit_flag) { do_exit = 1; } - if (d->squelch_level && d->squelch_hits > d->conseq_squelch) { - d->squelch_hits = d->conseq_squelch + 1; /* hair trigger */ + + if (d->squelch_level && d->squelch_hits > d->squelch_conseq) { + d->squelch_hits = d->squelch_conseq + 1; /* hair trigger */ safe_cond_signal(&controller.hop, &controller.hop_m); continue; } + pthread_rwlock_wrlock(&o->rw); memcpy(o->result, d->result, 2*d->result_len); o->result_len = d->result_len; pthread_rwlock_unlock(&o->rw); safe_cond_signal(&o->ready, &o->ready_m); } + return 0; } @@ -909,9 +919,14 @@ static void *controller_thread_fn(void *arg) while (!do_exit) { safe_cond_wait(&s->hop, &s->hop_m); if (s->freq_len <= 1) { - continue;} + continue; + } + /* hacky hopping */ s->freq_now = (s->freq_now + 1) % s->freq_len; + fprintf(stderr, "Frequency: %.3f MHz (signal: %d, squelch: %d)\r", + s->freqs[s->freq_now] / 1e6, demod.squelch_signal_rms, + demod.squelch_level); optimal_settings(s->freqs[s->freq_now], demod.rate_in); rtlsdr_set_center_freq(dongle.dev, dongle.freq); dongle.mute = BUFFER_DUMP; @@ -954,7 +969,7 @@ void demod_init(struct demod_state *s) s->rate_in = DEFAULT_SAMPLE_RATE; s->rate_out = DEFAULT_SAMPLE_RATE; s->squelch_level = 0; - s->conseq_squelch = 10; + s->squelch_conseq = 10; s->terminate_on_squelch = 0; s->squelch_hits = 11; s->downsample_passes = 0; @@ -1027,7 +1042,7 @@ void sanity_checks(void) exit(1); } - if (controller.freq_len > 1 && demod.squelch_level == 0) { + if (controller.freq_len > 1 && !demod.squelch_level) { fprintf(stderr, "Please specify a squelch level. Required for scanning multiple frequencies.\n"); exit(1); } @@ -1085,9 +1100,9 @@ int main(int argc, char **argv) fprintf(stderr, "Oversample must be between 1 and %i\n", MAXIMUM_OVERSAMPLE);} break; case 't': - demod.conseq_squelch = (int)atof(optarg); - if (demod.conseq_squelch < 0) { - demod.conseq_squelch = -demod.conseq_squelch; + demod.squelch_conseq = (int)atof(optarg); + if (demod.squelch_conseq < 0) { + demod.squelch_conseq = -demod.squelch_conseq; demod.terminate_on_squelch = 1; } break; -- 1.7.10.4

1 2

questions about gr-osmosdr
by Pavel Demin 19 Sep '15

19 Sep '15

Hello, I'm working on the gr-osmosdr blocks for the Red Pitaya SDR transceiver. They are based on the file block with some pieces borrowed from the rtl_tcp block. The new blocks are already working and the code can be found at: https://github.com/pavel-demin/gr-osmosdr/tree/master/lib/red_pitaya My notes about the Red Pitaya SDR transceiver can be found at: http://pavel-demin.github.io/red-pitaya-notes/sdr-transceiver I have two questions that I can't find an answer to: - What would be the best way to implement the push-to-talk (PTT) command? I don't see any method reserved for this kind of functionality in gr-osmosdr/lib/sink_impl.h. I can think of putting it to set_if_gain or set_bb_gain but I'm not sure if it's a good idea. - Once the PTT problem solved, what would be the best way to submit a patch with my modifications? Best regards, Pavel

3 6

2 out of 3 gains function in Gnuradio for Airspy
by Martin Smith 04 Sep '15

04 Sep '15

Hi, There are three gains in the Airspy LNA,MIX and IF. With GQRX these are all accessible and function as expected (https://i.imgur.com/g11kehx.png?1 ). With osmocom_fft these are all accessible and function as expected ( osmocom_fft -a airspy=0 -f 88.5M -s 10M ) ( https://i.imgur.com/4Pu7sP9.png?1 ). But with Gnuradio the MIX gain is not accessible, or the set_bb_gain() in not linked to anything in the case of an Airspy ( https://i.imgur.com/KCTBmsu.jpg?1 ). I can turn "Ch0: BB gain" from its minimum to its maximum value and it changes nothing. If it was broken for all three I would assume that the problem was with the gr-osmosdr block. That it works correctly for two programs that use this block and not correctly for Gnuradio made me suspect that the problem is with Gnuradio. The ticket I logged ( http://gnuradio.org/redmine/issues/834 ) was closed. They let me know that my two out of three guess was wrong and that this is an issue with the gr-osmosdr block, so they kindly pointed me in the direction of this mailing list for help. I would try and debug it further but I have left my zone of knowledge to look any further. Thanks in advance for any help that you can provide, Martin

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Build problem after updating boost
by Calum 19 Aug '15

19 Aug '15

Hello all, I had a problem building gr-osmosdr a few days ago (it was looking in /usr/lib64/lib64), which I worked around by symlinking a couple of files to where they were being looked for. However, since an update of boost yesterday, I now get an error complaining about a boost file I don't have on my system. "/usr/lib64/lib64/libboost_date_time-d.a" Any ideas what's going wrong here? Centos 6.6 Previous boost version: 1.41.0-25 New boost version: 1.41.0-27 $ git clone git://git.osmocom.org/gr-osmosdr Initialized empty Git repository in /home/calum/src/gr-osmosdr/.git/ remote: Counting objects: 3818, done. remote: Compressing objects: 100% (2510/2510), done. remote: Total 3818 (delta 2736), reused 1888 (delta 1270) Receiving objects: 100% (3818/3818), 926.14 KiB | 1.13 MiB/s, done. Resolving deltas: 100% (2736/2736), done. $ cd gr-osmosdr $ mkdir build ; cd build $ cmake .. -- The CXX compiler identification is GNU 4.4.7 -- The C compiler identification is GNU 4.4.7 -- Check for working CXX compiler: /usr/bin/c++ -- Check for working CXX compiler: /usr/bin/c++ -- works -- Detecting CXX compiler ABI info -- Detecting CXX compiler ABI info - done -- Check for working C compiler: /usr/bin/cc -- Check for working C compiler: /usr/bin/cc -- works -- Detecting C compiler ABI info -- Detecting C compiler ABI info - done -- Build type not specified: defaulting to release. -- Found Git: /usr/bin/git (found version "1.7.1") -- Extracting version information from git describe... -- Configuring Boost C++ Libraries... CMake Error at /usr/lib64/boost/Boost.cmake:536 (message): The imported target "boost_date_time-static-debug" references the file "/usr/lib64/lib64/libboost_date_time-d.a" but this file does not exist. Possible reasons include: * The file was deleted, renamed, or moved to another location. * An install or uninstall procedure did not complete successfully. * The installation package was faulty and contained "/usr/lib64/boost/Boost.cmake" but not all the files it references. Call Stack (most recent call first): /usr/lib64/boost/BoostConfig.cmake:28 (include) /usr/share/cmake/Modules/FindBoost.cmake:177 (find_package) CMakeLists.txt:122 (find_package) -- Configuring incomplete, errors occurred! See also "/home/calum/src/gr-osmosdr/build/CMakeFiles/CMakeOutput.log". $

1 1

hackrf_sink_c.cc bug on ARM
by Martin 10101 17 Aug '15

17 Aug '15

Hello! Long story short: hackrf sink code to convert from GR complex to hackrf 8-bit format fails by generating wrong bits on ARM when I do TX on Raspberry PI 2 . Evil hides here: lib/hackrf/hackrf_sink_c.cc outbuf[i] = inbuf[i]*127; Since on ARM GCC treats all "char" as unsigned(this is chosen implementation) it generates wrong bits, so my advice is to compile on ARM gr-osmocom with flag -fsigned-char. This is probably most effective way to solve this, it solved my TX problems.

1 0

Trouble building on OS X 10.10.4
by Nils Guillermin 09 Aug '15

09 Aug '15

Hi there, I am having trouble building latest version of gr-osmosdr on my Mac. I am having identical issue with homebrew version (from chleggett tap) as with cloning from http://git.osmocom.org/gr-osmosdr/. `make` step always fails with linker error Undefined symbols for architecture x86_64: "_rtlsdr_get_index_by_serial", referenced from: rtl_source_c::rtl_source_c(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) in rtl_source_c.cc.o "_rtlsdr_set_agc_mode", referenced from: rtl_source_c::rtl_source_c(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) in rtl_source_c.cc.o rtl_source_c::set_gain_mode(bool, unsigned long) in rtl_source_c.cc.o non-virtual thunk to rtl_source_c::set_gain_mode(bool, unsigned long) in rtl_source_c.cc.o "_rtlsdr_set_direct_sampling", referenced from: rtl_source_c::rtl_source_c(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) in rtl_source_c.cc.o "_rtlsdr_set_offset_tuning", referenced from: rtl_source_c::rtl_source_c(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) in rtl_source_c.cc.o ld: symbol(s) not found for architecture x86_64 clang: error: linker command failed with exit code 1 (use -v to see invocation) make[2]: *** [lib/libgnuradio-osmosdr.0.1.5git.dylib] Error 1 make[1]: *** [lib/CMakeFiles/gnuradio-osmosdr.dir/all] Error 2 make: *** [all] Error 2 Trying to add -DCMAKE_CXX_FLAGS=-libstd=libstdc++ only results in even more undefined symbols on top of these. I'm not sure where to proceed from here. This is my first post to this list, so hello everyone! and Thanks for any help. Nils

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Re: Problem building gr-osmosdr
by Calum 06 Aug '15

06 Aug '15

Hey Nikolay, Yes, that's what I thought although I'm not familiar enough with cmake to fix it. I'm happy to try out any changes though, if someone can suggest something that I can try? On 6 August 2015 at 10:57, Calum <caluml(a)gmail.com> wrote: > Hey Nikolay, > > Yes, that's what I thought although I'm not familiar enough with cmake to > fix it. > I'm happy to try out any changes though, if someone can suggest something > that I can try? > > On 6 August 2015 at 10:50, Nikolay Dimitrov <picmaster(a)mail.bg> wrote: > >> Hi Calum, >> >> On 08/06/2015 12:35 PM, Calum wrote: >> >>> For the record - the workaround >>> >>> mkdir /usr/lib64/lib64/ >>> cd /usr/lib64/lib64/ >>> ln -s ../libboost_system-mt.so.5 >>> ln -s ../libboost_thread-mt.so.5 >>> >>> allowed me to build it, although it's not ideal. >>> >> >> This looks like an issue with the cmake config file. >> >> On 6 August 2015 at 10:28, Calum <caluml(a)gmail.com >>> <mailto:caluml@gmail.com>> wrote: >>> >>> Hello all, >>> >>> I have a problem building gr-osmosdr. >>> Steps followed: >>> >>> git clone git://git.osmocom.org/gr-osmosdr >>> <http://git.osmocom.org/gr-osmosdr> (commit >>> >>> 86ad584204762eeb01f07daa683673f1ec3f1df5) >>> cd gr-osmosdr/ >>> mkdir build >>> cd build/ >>> ENABLE_FCD=ON ENABLE_FCDPP=ON cmake ../ >>> make >>> Scanning dependencies of target gnuradio-osmosdr >>> [ 10%] Building CXX object >>> lib/CMakeFiles/gnuradio-osmosdr.dir/source_impl.cc.o >>> [ 20%] Building CXX object >>> lib/CMakeFiles/gnuradio-osmosdr.dir/sink_impl.cc.o >>> [ 30%] Building CXX object >>> lib/CMakeFiles/gnuradio-osmosdr.dir/ranges.cc.o >>> [ 40%] Building CXX object >>> lib/CMakeFiles/gnuradio-osmosdr.dir/device.cc.o >>> [ 50%] Building CXX object >>> lib/CMakeFiles/gnuradio-osmosdr.dir/time_spec.cc.o >>> [ 60%] Building CXX object >>> lib/CMakeFiles/gnuradio-osmosdr.dir/fcd/fcd_source_c.cc.o >>> [ 70%] Building CXX object >>> lib/CMakeFiles/gnuradio-osmosdr.dir/file/file_source_c.cc.o >>> [ 80%] Building CXX object >>> lib/CMakeFiles/gnuradio-osmosdr.dir/rtl_tcp/rtl_tcp_source_f.cc.o >>> [ 90%] Building CXX object >>> lib/CMakeFiles/gnuradio-osmosdr.dir/rtl_tcp/rtl_tcp_source_c.cc.o >>> [100%] Building CXX object >>> lib/CMakeFiles/gnuradio-osmosdr.dir/rfspace/rfspace_source_c.cc.o >>> make[2]: *** No rule to make target >>> `/usr/lib64/lib64/libboost_thread-mt.so.5', needed by >>> `lib/libgnuradio-osmosdr-0.1.5git.so.0.0.0'. Stop. >>> make[1]: *** [lib/CMakeFiles/gnuradio-osmosdr.dir/all] Error 2 >>> make: *** [all] Error 2 >>> >>> I wonder if anyone can help me with this? Looks like the path to >>> libboost_thread-mt.so.5 has two lib64s in it. >>> I'm running CentOS 6.6. >>> >>> C >>> >>> >>> >> Regards, >> Nikolay >> > >

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Problem building gr-osmosdr
by Calum 06 Aug '15

06 Aug '15

Hello all, I have a problem building gr-osmosdr. Steps followed: git clone git://git.osmocom.org/gr-osmosdr (commit 86ad584204762eeb01f07daa683673f1ec3f1df5) cd gr-osmosdr/ mkdir build cd build/ ENABLE_FCD=ON ENABLE_FCDPP=ON cmake ../ make Scanning dependencies of target gnuradio-osmosdr [ 10%] Building CXX object lib/CMakeFiles/gnuradio-osmosdr.dir/source_impl.cc.o [ 20%] Building CXX object lib/CMakeFiles/gnuradio-osmosdr.dir/sink_impl.cc.o [ 30%] Building CXX object lib/CMakeFiles/gnuradio-osmosdr.dir/ranges.cc.o [ 40%] Building CXX object lib/CMakeFiles/gnuradio-osmosdr.dir/device.cc.o [ 50%] Building CXX object lib/CMakeFiles/gnuradio-osmosdr.dir/time_spec.cc.o [ 60%] Building CXX object lib/CMakeFiles/gnuradio-osmosdr.dir/fcd/fcd_source_c.cc.o [ 70%] Building CXX object lib/CMakeFiles/gnuradio-osmosdr.dir/file/file_source_c.cc.o [ 80%] Building CXX object lib/CMakeFiles/gnuradio-osmosdr.dir/rtl_tcp/rtl_tcp_source_f.cc.o [ 90%] Building CXX object lib/CMakeFiles/gnuradio-osmosdr.dir/rtl_tcp/rtl_tcp_source_c.cc.o [100%] Building CXX object lib/CMakeFiles/gnuradio-osmosdr.dir/rfspace/rfspace_source_c.cc.o make[2]: *** No rule to make target `/usr/lib64/lib64/libboost_thread-mt.so.5', needed by `lib/libgnuradio-osmosdr-0.1.5git.so.0.0.0'. Stop. make[1]: *** [lib/CMakeFiles/gnuradio-osmosdr.dir/all] Error 2 make: *** [all] Error 2 I wonder if anyone can help me with this? Looks like the path to libboost_thread-mt.so.5 has two lib64s in it. I'm running CentOS 6.6. C

2 2

Flashing AT91SAM3
by chrysh 03 Aug '15

03 Aug '15

Hi everyone, the new SIMtrace board will be available soon. It is equipped with an Atmel AT91SAM3 instead of a AT91SAM7 (both chips are pin compatible, so upgrading by hand by unsoldering the old processor and attaching the new AT91SAM3 is also possible). Just for the record, if you want to flash an AT91SAM3, this solution worked for me: Comment out osmoSDRDetect() return -1 in osmosdr.c, so that osmoSDRDetect always returns 0. Further adjustment in terms of addresses: % diff -Naur src/sam3u.c src/sam3s.c5 --- src/sam3u.c 2015-05-29 15:59:51.697208630 +0200 +++ src/sam3s.c 2015-05-29 15:39:34.331493312 +0200 @@ -139,12 +139,8 @@ switch(bank) { case 0: - regBase = 0x400e0800; - flashBase = 0x80000; - break; - case 1: regBase = 0x400e0a00; - flashBase = 0x100000; + flashBase = 0x400000; break; default: fprintf(stderr, "illegal flash bank"); @@ -192,12 +188,8 @@ switch(bank) { case 0: - regBase = 0x400e0800; - flashBase = 0x80000; - break; - case 1: regBase = 0x400e0a00; - flashBase = 0x100000; + flashBase = 0x400000; break; default: fprintf(stderr, "illegal flash bank"); After adjusting the addresses, compile sam3s.c in the Makefile instead of sam3u.c. Please also find attached a diff of my locally applied change, which might illustrate the adjustments needed in more clarity. Regards, Christina

1 0

osmocom_fft "peak hold" patch
by Stefan `Sec` Zehl 03 Aug '15

03 Aug '15

Hi, I needed osmocom_fft to start in "peak hold" mode, so I added the commandline option necessary for it. Maybe this patch could be included in the official osmocom_fft :) --- /home/sec/Projects/gnuradio/gr-osmosdr/apps/osmocom_fft 2015-07-26 13:22:47.743207885 +0200 +++ /usr/local/bin/osmocom_fft 2015-08-03 15:07:23.977849575 +0200 @@ -91,6 +91,8 @@ help="Set fftsink averaging factor, default=[%default]") parser.add_option("", "--averaging", action="store_true", default=False, help="Enable fftsink averaging, default=[%default]") + parser.add_option("", "--peak-hold", action="store_true", default=False, + help="Enable fftsink peak hold, default=[%default]") parser.add_option("", "--ref-scale", type="eng_float", default=1.0, help="Set dBFS=0dB input value, default=[%default]") parser.add_option("", "--fft-size", type="int", default=1024, @@ -242,6 +244,7 @@ ref_level=20.0, y_divs = 12, average=options.averaging, + peak_hold=options.peak_hold, avg_alpha=options.avg_alpha, fft_rate=options.fft_rate) Thanks, Sec -- When in doubt, invent a chinese proverb.

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