op25-dev

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314 discussions

OP25 on Ubuntu 14.04
by 'William Becks' wa8wg＠centurytel.net [op25-dev] 11 Oct '17

11 Oct '17

Gents, Has anyone else observed that pulse audio seems to crash consistently after approximately 24 hours of continuous operation of Ubuntu14.04? This happens regardless of the branch of op25 built on the system. I have searched the web for this problem and have tried a number of fixes for the pulse audio crash but none of them have corrected the problem. I have tried uninstalling pulse audio to use the underlying ALSA, but can't seem to maintain reliable audio level settings after a shutdown or a reboot. Any ideas or suggestions would be appreciated. Thank you, Bill, WA8WG

2 7

Some op25 patches [2 Attachments]
by John Ackermann N8UR jra＠febo.com [op25-dev] 26 Sep '17

26 Sep '17

Hi -- Back in July I got Max's then-current branch running on my RPi 3, and then proceeded to make some changes around the edges. In terminal.py I did a couple of things: 1. Made the terminal window size-aware so that you can display more than 20 "voice frequency..." lines without crashing Without this, if a site has more than 20 channels, the program will crash when the 21st shows up. With the patch, just make the console window taller and avoid the problem. 2. Cleaned up the console display a bit, and added a "help" line to display the available commands. I don't think there have been any recent changes that would impact these changes and my diff seems to apply cleanly to the current version. The more interesting set of changes are in trunking.py where I cleaned up the log lines for consistency, moved one set of messages from console to stderr, added some granularity to the -v settings, and added a couple of new log messages that provide additional info. As a result, the stderr.2 output is now (IMHO) more useful, and you can analyze it to learn fun facts. For example, attached if Yahoo allows are screenshots of activity by hour, and a sorted list of the most active talkgroups on the site. I wrote a shell script that reads stderr.2 to generate this data. I see that there's been some recent activity in Graham's new fork. It looks like trunking.py has been updated and I don't know if my changes might conflict. My patch-fu is not the greatest, and I don't want to screw things up, but I'd like to contribute my stuff to the project. Graham, I don't have your direct email address. Can I send you my files (based on the Max branch as of mid-July) and ask you to diff them and add them to your repo if they are OK? I'll also provide the traffic analysis script. Of course, I'm happy to send the files to anyone else who might want them. Thanks, John N8UR jra(a)febo.com PS -- and I am hoping to make a ready-to-go RPi op25 image file available as soon as I get these patches integrated.

2 1

Raspbian Jessie Stretch Lite
by wa8wg＠centurytel.net [op25-dev] 25 Sep '17

25 Sep '17

I attempted to built the MAX branch of OP25 on the August release of Raspbian Jessie Stretch Lite but was unable to compile the code resulting in the following error during make. [ 52%] Building CXX object op25/gr-op25_repeater/lib/imbe_vocoder/CMakeFiles/imbe_vocoder.dir/pitch_est.cc.o /home/pi/op25/op25/gr-op25_repeater/lib/imbe_vocoder/pitch_est.cc:60:1: error: narrowing conversion of ‘32970’ from ‘int’ to ‘Word16 {aka short int}’ inside { } [-Wnarrowing] }; ^ /home/pi/op25/op25/gr-op25_repeater/lib/imbe_vocoder/pitch_est.cc:60:1: error: narrowing conversion of ‘33226’ from ‘int’ to ‘Word16 {aka short int}’ inside { } [-Wnarrowing] /home/pi/op25/op25/gr-op25_repeater/lib/imbe_vocoder/pitch_est.cc:60:1: error: narrowing conversion of ‘33482’ from ‘int’ to ‘Word16 {aka short int}’ inside { } [-Wnarrowing] /home/pi/op25/op25/gr-op25_repeater/lib/imbe_vocoder/pitch_est.cc:60:1: error: narrowing conversion of ‘33482’ from ‘int’ to ‘Word16 {aka short int}’ inside { } [-Wnarrowing] /home/pi/op25/op25/gr-op25_repeater/lib/imbe_vocoder/pitch_est.cc:60:1: error: narrowing conversion of ‘33738’ from ‘int’ to ‘Word16 {aka short int}’ inside { } [-Wnarrowing] /home/pi/op25/op25/gr-op25_repeater/lib/imbe_vocoder/pitch_est.cc:60:1: error: narrowing conversion of ‘33994’ from ‘int’ to ‘Word16 {aka short int}’ inside { } [-Wnarrowing] /home/pi/op25/op25/gr-op25_repeater/lib/imbe_vocoder/pitch_est.cc:60:1: error: narrowing conversion of ‘34250’ from ‘int’ to ‘Word16 {aka short int}’ inside { } [-Wnarrowing] /home/pi/op25/op25/gr-op25_repeater/lib/imbe_vocoder/pitch_est.cc:60:1: error: narrowing conversion of ‘34506’ from ‘int’ to ‘Word16 {aka short int}’ inside { } [-Wnarrowing] /home/pi/op25/op25/gr-op25_repeater/lib/imbe_vocoder/pitch_est.cc:60:1: error: narrowing conversion of ‘34506’ from ‘int’ to ‘Word16 {aka short int}’ inside { } [-Wnarrowing] /home/pi/op25/op25/gr-op25_repeater/lib/imbe_vocoder/pitch_est.cc:60:1: error: narrowing conversion of ‘34762’ from ‘int’ to ‘Word16 {aka short int}’ inside { } [-Wnarrowing] /home/pi/op25/op25/gr-op25_repeater/lib/imbe_vocoder/pitch_est.cc:60:1: error: narrowing conversion of ‘35018’ from ‘int’ to ‘Word16 {aka short int}’ inside { } [-Wnarrowing] /home/pi/op25/op25/gr-op25_repeater/lib/imbe_vocoder/pitch_est.cc:60:1: error: narrowing conversion of ‘35274’ from ‘int’ to ‘Word16 {aka short int}’ inside { } [-Wnarrowing] /home/pi/op25/op25/gr-op25_repeater/lib/imbe_vocoder/pitch_est.cc:60:1: error: narrowing conversion of ‘35530’ from ‘int’ to ‘Word16 {aka short int}’ inside { } [-Wnarrowing] /home/pi/op25/op25/gr-op25_repeater/lib/imbe_vocoder/pitch_est.cc:60:1: error: narrowing conversion of ‘35530’ from ‘int’ to ‘Word16 {aka short int}’ inside { } [-Wnarrowing] /home/pi/op25/op25/gr-op25_repeater/lib/imbe_vocoder/pitch_est.cc:60:1: error: narrowing conversion of ‘35786’ from ‘int’ to ‘Word16 {aka short int}’ inside { } [-Wnarrowing] /home/pi/op25/op25/gr-op25_repeater/lib/imbe_vocoder/pitch_est.cc:60:1: error: narrowing conversion of ‘36042’ from ‘int’ to ‘Word16 {aka short int}’ inside { } [-Wnarrowing] /home/pi/op25/op25/gr-op25_repeater/lib/imbe_vocoder/pitch_est.cc:60:1: error: narrowing conversion of ‘36298’ from ‘int’ to ‘Word16 {aka short int}’ inside { } [-Wnarrowing] /home/pi/op25/op25/gr-op25_repeater/lib/imbe_vocoder/pitch_est.cc:60:1: error: narrowing conversion of ‘36554’ from ‘int’ to ‘Word16 {aka short int}’ inside { } [-Wnarrowing] /home/pi/op25/op25/gr-op25_repeater/lib/imbe_vocoder/pitch_est.cc:60:1: error: narrowing conversion of ‘36554’ from ‘int’ to ‘Word16 {aka short int}’ inside { } [-Wnarrowing] /home/pi/op25/op25/gr-op25_repeater/lib/imbe_vocoder/pitch_est.cc:60:1: error: narrowing conversion of ‘36810’ from ‘int’ to ‘Word16 {aka short int}’ inside { } [-Wnarrowing] /home/pi/op25/op25/gr-op25_repeater/lib/imbe_vocoder/pitch_est.cc:60:1: error: narrowing conversion of ‘37066’ from ‘int’ to ‘Word16 {aka short int}’ inside { } [-Wnarrowing] /home/pi/op25/op25/gr-op25_repeater/lib/imbe_vocoder/pitch_est.cc:60:1: error: narrowing conversion of ‘37322’ from ‘int’ to ‘Word16 {aka short int}’ inside { } [-Wnarrowing] /home/pi/op25/op25/gr-op25_repeater/lib/imbe_vocoder/pitch_est.cc:60:1: error: narrowing conversion of ‘37578’ from ‘int’ to ‘Word16 {aka short int}’ inside { } [-Wnarrowing] /home/pi/op25/op25/gr-op25_repeater/lib/imbe_vocoder/pitch_est.cc:60:1: error: narrowing conversion of ‘37578’ from ‘int’ to ‘Word16 {aka short int}’ inside { } [-Wnarrowing] /home/pi/op25/op25/gr-op25_repeater/lib/imbe_vocoder/pitch_est.cc:60:1: error: narrowing conversion of ‘37834’ from ‘int’ to ‘Word16 {aka short int}’ inside { } [-Wnarrowing] /home/pi/op25/op25/gr-op25_repeater/lib/imbe_vocoder/pitch_est.cc:60:1: error: narrowing conversion of ‘38090’ from ‘int’ to ‘Word16 {aka short int}’ inside { } [-Wnarrowing] /home/pi/op25/op25/gr-op25_repeater/lib/imbe_vocoder/pitch_est.cc:60:1: error: narrowing conversion of ‘38346’ from ‘int’ to ‘Word16 {aka short int}’ inside { } [-Wnarrowing] /home/pi/op25/op25/gr-op25_repeater/lib/imbe_vocoder/pitch_est.cc:60:1: error: narrowing conversion of ‘38602’ from ‘int’ to ‘Word16 {aka short int}’ inside { } [-Wnarrowing] /home/pi/op25/op25/gr-op25_repeater/lib/imbe_vocoder/pitch_est.cc:60:1: error: narrowing conversion of ‘38602’ from ‘int’ to ‘Word16 {aka short int}’ inside { } [-Wnarrowing] /home/pi/op25/op25/gr-op25_repeater/lib/imbe_vocoder/pitch_est.cc:60:1: error: narrowing conversion of ‘38858’ from ‘int’ to ‘Word16 {aka short int}’ inside { } [-Wnarrowing] /home/pi/op25/op25/gr-op25_repeater/lib/imbe_vocoder/pitch_est.cc:60:1: error: narrowing conversion of ‘39114’ from ‘int’ to ‘Word16 {aka short int}’ inside { } [-Wnarrowing] /home/pi/op25/op25/gr-op25_repeater/lib/imbe_vocoder/pitch_est.cc:60:1: error: narrowing conversion of ‘39370’ from ‘int’ to ‘Word16 {aka short int}’ inside { } [-Wnarrowing] /home/pi/op25/op25/gr-op25_repeater/lib/imbe_vocoder/pitch_est.cc:60:1: error: narrowing conversion of ‘39626’ from ‘int’ to ‘Word16 {aka short int}’ inside { } [-Wnarrowing] op25/gr-op25_repeater/lib/imbe_vocoder/CMakeFiles/imbe_vocoder.dir/build.make:326: recipe for target 'op25/gr-op25_repeater/lib/imbe_vocoder/CMakeFiles/imbe_vocoder.dir/pitch_est.cc.o' failed make[2]: *** [op25/gr-op25_repeater/lib/imbe_vocoder/CMakeFiles/imbe_vocoder.dir/pitch_est.cc.o] Error 1 CMakeFiles/Makefile2:737: recipe for target 'op25/gr-op25_repeater/lib/imbe_vocoder/CMakeFiles/imbe_vocoder.dir/all' failed make[1]: *** [op25/gr-op25_repeater/lib/imbe_vocoder/CMakeFiles/imbe_vocoder.dir/all] Error 2 Makefile:127: recipe for target 'all' failed make: *** [all] Error 2 Any ideas on how to patch Raspbian Jessie Stretch Lite to correct the Makefile recipe error? Thank you, Bill, WA8WG

4 9

OP25 and Wireshark
by James K4JK k4jk.james＠gmail.com [op25-dev] 25 Sep '17

25 Sep '17

Hi All, I'm looking for hints as to how to get P25 frames to decode properly using rx.py and wireshark. I'm using the max branch of OP25 on Debian 8. I'm trying to monitor a phase 2 system. I have compiled wireshark 1.8.6, with the OP25 patches and have it running on Ubuntu 14.04 on another machine. I can see P25 frames in wireshark, they show up but I have very strange information in them. Lots of TGIDs set to 0, etc. There are also very few if any LDU1 and LDU2 frames making it into the traces on both Phase 1 and 2. Mostly HDU and link control stuff. I'm watching OP25 switch to a voice channel in the console so I know that there is audio on one of the monitored TGs. Does anyone have any pointers or gotchas for this? I have tried both with and without the -2 and -v switches. I am using -w and -W 224.0.0.1. Should I be using the old branch for this? Is this possible? I have also noticed on Phase I systems that the TGID, ALGID, and MI shows up in the stderr file when debug (-v) is set to 10, I think. But this does not happen on Phase 2. Any way to make this happen on Phase 2? Thanks for any assistance. James

5 6

Undefined Symbol Error
by James K4JK k4jk.james＠gmail.com [op25-dev] 21 Sep '17

21 Sep '17

Hi again all, I'm trying to get the main branch running with some of the changes that Joe incorporated last year. Everything compiles fine (this is a fresh install of Ubuntu 14.04) but when running scope.py I'm getting and undefined symbol error: (most recent call last): File "./scope.py", line 55, in <module> import op25_repeater File "/usr/local/lib/python2.7/dist-packages/op25_repeater/__init__.py", line 45, in <module> from op25_repeater_swig import * File "/usr/local/lib/python2.7/dist-packages/op25_repeater/op25_repeater_swig.py", line 28, in <module> _op25_repeater_swig = swig_import_helper() File "/usr/local/lib/python2.7/dist-packages/op25_repeater/op25_repeater_swig.py", line 24, in swig_import_helper _mod = imp.load_module('_op25_repeater_swig', fp, pathname, description) ImportError: /usr/local/lib/libgnuradio-op25_repeater.so: undefined symbol: _ZN8p25p2_vf12encode_dstarEPhPKi Searching around for this does not turn up anything really. Has anyone seen this before? Thanks, James

4 8

OP25 for noobs by a noob (long)
by flkmrz＠gmail.com [op25-dev] 08 Sep '17

08 Sep '17

Trying to get op25 running was pretty much an exercise in frustration and annoyance. I've been doing computers for quite a few years, but I'm not a linux power user. After quite a bit of trial and error, wading through multiple forum posts, and doing more trial and error, I came up with a (hopefully) complete set of step by step instructions for getting op25 up and running. These instructions assume that you have just done a clean install of ubuntu 14.04 32bit linux. I ran into multiple problems with the 64 bit version. While I'm sure that they could be overcome, it seems the 32 bit version is easier. There are also probably other easier and/or faster ways of doing some of this stuff. Some of the stuff may be redundant. The bottom line is this is what worked for me. Your mileage may vary. Batteries not included. So, without further ado.... Make sure you have a working internet connection. Click on the settings icon on the left. When the system settings window opens, click on "software and updates". The first tab (ubuntu software) should have everything checked. Click on the second tab (other software). The first two options should be unchecked. Check them. You may be asked for your password to authenticate after checking the first one. Give it, then check on the second one. Click close on the lower right. You'll be told that the software needs to be updated. Let it. x out of the system settings window. Open a terminal window by typing <CTRL><ALT>t type in the following sequence of commands, pressing the enter key after each line. Anything in parentheses is a comment. sudo apt-get update sudo apt-get update sudo apt-get install aptitude sudo apt-get install aptitude sudo aptitude update (Yes, some of the commands are issued twice. I found that it makes it work. ) sudo apt-get update sudo apt-get build-dep gnuradio (hum the theme from Final Jeopardy. Make a sandwich. Get some chips to go with the sandwich. Get a cold drink to go with the sandwich and chips. Eat the sandwich and chips, and drink the cold drink. Quietly hum In A Gadda Da Vida. The long version. You're going to be here a while.) sudo apt-get install gnuradio gnuradio-dev gr-osmosdr librtlsdr-dev libuhd-dev libhackrf-dev libitpp-dev libpcap-dev git (go refill the cold drink and get some cookies for dessert. Eat the cookies slowly, and drink your cold drink.) cd ~ sudo git clone git://op25.osmocom.org/op25.git cd op25 sudo mkdir build cd build sudo cmake ../ sudo make sudo make install sudo ldconfig Now, we're going to blacklist the standard rtlsdr driver. To do this, use the following series of commands: cd /etc cd modprobe.d sudo gedit blacklist.conf Go to the end of the file, hit enter to add a blank line (for readability) and type in the following two lines: # this line prevents the standard dvb driver from loading blacklist dvb_usb_rtl28xxu At this point, you should have gnuradio and op25 installed. The next thing to do is to edit the files invoking op25 so you can listen to your system of interest. use the following sequence of commands to create a shell file to invoke op25 on your system of interest: cd ~ sudo gedit op25 Now, type in the following lines. We're going to assume that you want to listen to a P25 Phase II system. #!/bin/bash cd ~/op25/op25/gr-op25_repeater/apps python scope.py --args 'rtl' -g 65 -f 851.200e6 -N 'LNA:49' -2 -V -v 0 -S 1000000 -q 2 -T trunk.tsv cd ~ Save the file, and x out of gedit. An explanation of each of the command line arguments is available in the documentation. For now, we'll point out that the number following -f is the frequency of the control channel of interest, and the number following -q is the correction factor in ppm for the sdr stick that you're using. Next, we have to edit the trunking control files. Do the following series of commands: cd ~/op25/op25/gr-op25_repeater/apps sudo gedit trunk.tsv The default file that comes with the install lists a number of systems. Delete everything after the double quotes around "Center Frequency". Hit enter to get to the beginning of a new line. Type in the following line: "Kokomo"<tab>"851.200"<tab>"0"<tab>"0x734"<tab>"CQPSK"<tab>"trunkk.tsv" where <tab> is the tab key. Do not insert any spaces -- use tab only. By way of explanation, the first is the name of the system. Then comes the frequency of the control channel. You could insert several control channel frequencies separated by commas between the quotes, but I've found that this gives less than optimal performance. The remaining fields are offset, then the system ID (which you can find on RadioReference.com), the modulation type, and a file listing talkgroups. Substitute the appropriate data for your system. There is also a provision for whitelisting and blacklisting particular talkgroups, which I won't cover here. *** Make sure that there is absolutely nothing after the final quotes. Any spaces will make the program crash. *** At this point, save the file, and x out of gedit. Almost there..... Finally, we need to create a listing of talkgroups and names. This is actually optional, but it's much better listening when you can see what talkgroup is active, rather than just a number. While there are several ways of getting a talkgroup listing into a file, I'm only going to cover manually entering talkgroups. Talkgroups are in a tab delimited file, without quotes around the talkgroup numbers and tag names. For the example file, I'm only going to put in a couple of talkgroups -- just enough that the idea is obvious. If you've been following, you should still be in the ~/op25/op25/gr-op25_repeater/apps directory. Perform the following series of commands: sudo gedit trunkk.tsv Then, enter the following lines. Press the <tab> key between the talkgroup number and talkgroup name, and press enter after the talkgroup name. 10008 County All-Talk 10022 EMS Dispatch After you've entered your desired talkgroups, save the file, and x out of gedit. Go back to your home directory by typing: cd ~ To start op25, type the following bash op25 The operation of the program has been documented elsewhere, and it's mostly self-explanatory. A couple of hints: If you're getting choppy audio, turn off the displays for the tabs from spectrum through symbols. A Celeron 530 at 1.73 GHz would barely handle the audio with the displays turned off. If you get a NAC error when trying to start the program, check for trailing spaces in your trunk.tsv file. *Any* spaces at the end will crash the program. Hopefully, this will make it easier for people to get op25 up and running. Enjoy!

13 40

Building on OSX
by 'O'Connor, Daniel' darius＠dons.net.au [op25-dev] 18 Aug '17

18 Aug '17

Hi, I'm trying to build op25 on OSX and while I can get it to build and install it doesn't work. It sends up installing into /opt/local/lib/python2.7/site-packages instead of /opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/ If I add /opt/local/lib/python2.7/site-packages to sys.path or copy the files into the 'right' directory I get the following error.. In [2]: sys.path.append('/opt/local/lib/python2.7/site-packages/') In [3]: import op25 --------------------------------------------------------------------------- ImportError Traceback (most recent call last) <ipython-input-3-7d3debe9ed1a> in <module>() ----> 1 import op25 /opt/local/lib/python2.7/site-packages/op25/__init__.py in <module>() 43 44 # import swig generated symbols into the op25 namespace ---> 45 from op25_swig import * 46 47 # import any pure python here /opt/local/lib/python2.7/site-packages/op25/op25_swig.py in <module>() 15 except ImportError: 16 return importlib.import_module('_op25_swig') ---> 17 _op25_swig = swig_import_helper() 18 del swig_import_helper 19 elif _swig_python_version_info >= (2, 6, 0): /opt/local/lib/python2.7/site-packages/op25/op25_swig.py in swig_import_helper() 14 return importlib.import_module(mname) 15 except ImportError: ---> 16 return importlib.import_module('_op25_swig') 17 _op25_swig = swig_import_helper() 18 del swig_import_helper /opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/importlib/__init__.pyc in import_module(name, package) 35 level += 1 36 name = _resolve_name(name[level:], package, level) ---> 37 __import__(name) 38 return sys.modules[name] ImportError: No module named _op25_swig There is a file called /opt/local/lib/python2.7/site-packages/op25/_op25_swig.so so I don't know why it can't find it :( I tried renaming it from .so to .dylib but it still can't find it. I note that some of the GNUradio stuff is installed as a .so so..?! :) I have GNURadio installed using Macports and that seems to work fine. Any help appreciated, thanks. -- Daniel O'Connor "The nice thing about standards is that there are so many of them to choose from." -- Andrew Tanenbaum GPG Fingerprint - 5596 B766 97C0 0E94 4347 295E E593 DC20 7B3F CE8C

2 5

libairspy-dev in Unbuntu 14.04?
by wa8wg＠centurytel.net [op25-dev] 11 Aug '17

11 Aug '17

Can anyone assist in how to add Airspy (libairspy-dev) to GNU Radio + OP25 on Ubuntu 14.04? I am presently using the RTL-SDR but would like to use my Airspy SDR. I have come across some information that uses PyBombs to install libairspy-dev but can't seem to get PyBombs install properly on Ubuntu 14.04. I would also like to try it on Raspbian Jessie on my Pi3-B but don't believe that the Pi has enough processing power to run the minimum sampling rate of the Airspy. Any help would be appreciated. Bill, WA8WG

1 0

Intermittent crash [1 Attachment]
by John Ackermann N8UR jra＠febo.com [op25-dev] 26 Jul '17

26 Jul '17

Every now and then, shortly after startup I am seeing the error shown in the attached screenshot. It causes the program to exit. It doesn't show up every time, and if it doesn't appear within 30 seconds or so, it won't ever. I have no clue what's causing it; I don't think it's related to my patches (at least, the offending line is well before any of my changes). Maybe something isn't always initialized properly? John

1 0

Improved logging patch [2 Attachments]
by John Ackermann N8UR jra＠febo.com [op25-dev] 26 Jul '17

26 Jul '17

I've much improved the frequency/talkgroup logging in the patch I sent to the list on Monday. That version just dumped out, once per second, the freq and talkgroup list shown in the console main window (one line per freq, with last used tgid. New version: -v 5 prints: [timestamp] new freq: [freq] [timestamp] new tgid: [tgid] [tag if tagfile present] [timestamp] set control freq: [freq] (note: only if cc_trunk changes) This makes it easy to build a list of all the frequencies and talkgroups seen on the system, without creating excess output. -v 6 includes the above and adds a line for every tgid whether new or not: [timestamp] set tgid: [tgid] (note: tag not included) In addition to the above, this allows simple traffic analysis (how often is this tgid used, and when). Also changed: there was a fairly frequent line printed to console about "process_data_unit timeout". I changed that to go to stderr when -v is set to 10 or above, and also added a timestamp. I have no idea what this message means, but it doesn't seem to affect program operation. Attached are both the original patch file from Monday, and the new patch. Apply the original one, then patch2 on top of it. John

1 0

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