Re: [Discuss-gnuradio] Moon Bounce Experiment
When I run usrp_fft.py ... File usrp_fft.py, line 24, inmodule from gnuradio import usrp File /usr/lib/python2.6/dist-packages/gnuradio/usrp/__init__.py, line 25, inmodule File /usr/lib/python2.6/dist-packages/gnuradio/usrp/usrp_swig.py, line 6, inmodule ImportError: No module named _usrp_swig the python path is fine, its finding usrp_swig.py, but failing to import the _usrp_swig.so library. Try running sudo ldconfig. -josh ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Moon Bounce Experiment
On Oct 22, 2010, at 12:03 AM, Josh Blum wrote: When I run usrp_fft.py ... File usrp_fft.py, line 24, inmodule from gnuradio import usrp File /usr/lib/python2.6/dist-packages/gnuradio/usrp/__init__.py, line 25, inmodule File /usr/lib/python2.6/dist-packages/gnuradio/usrp/usrp_swig.py, line 6, inmodule ImportError: No module named _usrp_swig the python path is fine, its finding usrp_swig.py, but failing to import the _usrp_swig.so library. Try running sudo ldconfig. That did not help, any other ideas? Joe -josh ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Moon Bounce Experiment
On 10/21/2010 11:08 PM, Joseph Craig wrote: On Oct 22, 2010, at 12:03 AM, Josh Blum wrote: When I run usrp_fft.py ... File usrp_fft.py, line 24, inmodule from gnuradio import usrp File /usr/lib/python2.6/dist-packages/gnuradio/usrp/__init__.py, line 25, inmodule File /usr/lib/python2.6/dist-packages/gnuradio/usrp/usrp_swig.py, line 6, inmodule ImportError: No module named _usrp_swig the python path is fine, its finding usrp_swig.py, but failing to import the _usrp_swig.so library. Try running sudo ldconfig. That did not help, any other ideas? Maybe its really missing the file. In any case, I think your install is borked. I would remove any traces of gnuradio on your system and follow the BulidGuide for your particular version of ubuntu: http://gnuradio.org/redmine/wiki/gnuradio/BuildGuide -josh ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Moon Bounce Experiment
On Oct 22, 2010, at 7:54 AM, Josh Blum wrote: On 10/21/2010 11:08 PM, Joseph Craig wrote: On Oct 22, 2010, at 12:03 AM, Josh Blum wrote: When I run usrp_fft.py ... File usrp_fft.py, line 24, inmodule from gnuradio import usrp File /usr/lib/python2.6/dist-packages/gnuradio/usrp/__init__.py, line 25, inmodule File /usr/lib/python2.6/dist-packages/gnuradio/usrp/usrp_swig.py, line 6, inmodule ImportError: No module named _usrp_swig the python path is fine, its finding usrp_swig.py, but failing to import the _usrp_swig.so library. Try running sudo ldconfig. That did not help, any other ideas? Maybe its really missing the file. In any case, I think your install is borked. I would remove any traces of gnuradio on your system and follow the BulidGuide for your particular version of ubuntu: http://gnuradio.org/redmine/wiki/gnuradio/BuildGuide I'm trying that. Will sudo make uninstall completely remove the installation? thanks, Joe -josh ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Moon Bounce Experiment
On Oct 22, 2010, at 7:54 AM, Josh Blum wrote: On 10/21/2010 11:08 PM, Joseph Craig wrote: On Oct 22, 2010, at 12:03 AM, Josh Blum wrote: When I run usrp_fft.py ... File usrp_fft.py, line 24, inmodule from gnuradio import usrp File /usr/lib/python2.6/dist-packages/gnuradio/usrp/__init__.py, line 25, inmodule File /usr/lib/python2.6/dist-packages/gnuradio/usrp/usrp_swig.py, line 6, inmodule ImportError: No module named _usrp_swig the python path is fine, its finding usrp_swig.py, but failing to import the _usrp_swig.so library. Try running sudo ldconfig. That did not help, any other ideas? Maybe its really missing the file. In any case, I think your install is borked. I would remove any traces of gnuradio on your system and follow the BulidGuide for your particular version of ubuntu: http://gnuradio.org/redmine/wiki/gnuradio/BuildGuide I think I found a dependency problem with libsdl if this clues you into anything. I originally installed gnuradio with synaptic and everything worked, but I can't even get that installed again, it complains about trying to overwrite usr/lib/libusrp.la which is also in package libusrp0-dev thanks for your help on this. I would really like to just get back to the synaptic install and capture a long file with usrp_rx_cfile.py sudo apt-get install libsdl1.2-dev Reading package lists... Done Building dependency tree Reading state information... Done You might want to run `apt-get -f install' to correct these: The following packages have unmet dependencies: libgnuradio-usrp: Depends: libusrp (= 3.2.2-1) but it is not going to be installed libsdl1.2-dev: Depends: libx11-dev but it is not going to be installed Depends: libglu1-mesa-dev but it is not going to be installed Recommends: libxt-dev but it is not going to be installed Recommends: libxext-dev but it is not going to be installed Recommends: libaa1-dev but it is not going to be installed Recommends: libesd0-dev but it is not going to be installed Recommends: libdirectfb-dev (= 0.9.22) but it is not going to be installed Recommends: libcaca-dev but it is not going to be installed python-gnuradio-usrp: Depends: libusrp but it is not going to be installed E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution). Joe -josh ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Moon Bounce Experiment
On Oct 20, 2010, at 11:19 PM, Marcus D. Leech wrote: On 10/21/2010 01:02 AM, Joseph Craig wrote: On Oct 20, 2010, at 7:07 PM, Eric Blossom wrote: On Wed, Oct 20, 2010 at 06:49:21PM -0600, Joseph Craig wrote: Hi Marcus, Thanks for the quick reply... On Oct 20, 2010, at 5:51 PM, Marcus D. Leech wrote: On 10/20/2010 07:13 PM, Joseph Craig wrote: I have managed to install gnuradio and run usrp_fft.py with success! Now for the questions... 1) I'm always seeing... Exception RuntimeError: 'maximum recursion depth exceeded while calling a Python object' in type 'exception.AttributeError' ignored . What does this mean, and how to fix it? In what application are you seeing this error? python Which version of GNU Radio are you using? tarball? If so, which one? git? If so, which branch? I've install gnuradio from Synaptic Package Manager. Looks like 3.0.4 I see this error when every gnuradio python application is run. thanks, Joe Craig Eric My recollection is that there was a compatibility issue between older Gnu Radio code, and the Python2.6 that's in Ubuntu 9.X and more recent. Really, you'll have much better joy if you install from GIT source, following the directions found here: http://gnuradio.org/redmine/wiki/gnuradio/BuildGuide You'll have to uninstall the version that Synaptic installed. Gnu radio is still very much a rapidly-evolving beast, which means that installing from GIT source is really a good way to go. The packagers for various Linux distributions can't possibly keep up with the codebase. Ok, I've been reinstalling with GIT distro for some time now. I'm almost there. I'm on Ubuntu 8.04 and I seem to have all the packages, the only things left are: gcell gr-gcell gr-audio-jack gr-audio-osx gr-audio-portaudio gr-audio-windows gr-comedi gr-video-sdl gr-qtgui When I run usrp_fft.py ... File usrp_fft.py, line 24, in module from gnuradio import usrp File /usr/lib/python2.6/dist-packages/gnuradio/usrp/__init__.py, line 25, in module File /usr/lib/python2.6/dist-packages/gnuradio/usrp/usrp_swig.py, line 6, in module ImportError: No module named _usrp_swig thanks for the help. Joe -- Principal Investigator Shirleys Bay Radio Astronomy Consortium http://www.sbrac.org ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Moon Bounce Experiment
On 10/22/2010 12:17 AM, Joseph Craig wrote: Ok, I've been reinstalling with GIT distro for some time now. I'm almost there. I'm on Ubuntu 8.04 and I seem to have all the packages, the only things left are: gcell gr-gcell gr-audio-jack gr-audio-osx gr-audio-portaudio gr-audio-windows gr-comedi gr-video-sdl gr-qtgui You don't need any of the above for basic functionality. When I run usrp_fft.py ... File usrp_fft.py, line 24, in module from gnuradio import usrp File /usr/lib/python2.6/dist-packages/gnuradio/usrp/__init__.py, line 25, in module File /usr/lib/python2.6/dist-packages/gnuradio/usrp/usrp_swig.py, line 6, in module ImportError: No module named _usrp_swig thanks for the help. Joe Have you set your PYTHONPATH variable to point to /usr/lib/python2.6/dist-packages ? -- Marcus Leech Principal Investigator Shirleys Bay Radio Astronomy Consortium http://www.sbrac.org ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Moon Bounce Experiment
On Oct 21, 2010, at 10:29 PM, Marcus D. Leech wrote: On 10/22/2010 12:17 AM, Joseph Craig wrote: Ok, I've been reinstalling with GIT distro for some time now. I'm almost there. I'm on Ubuntu 8.04 and I seem to have all the packages, the only things left are: gcell gr-gcell gr-audio-jack gr-audio-osx gr-audio-portaudio gr-audio-windows gr-comedi gr-video-sdl gr-qtgui You don't need any of the above for basic functionality. When I run usrp_fft.py ... File usrp_fft.py, line 24, in module from gnuradio import usrp File /usr/lib/python2.6/dist-packages/gnuradio/usrp/__init__.py, line 25, in module File /usr/lib/python2.6/dist-packages/gnuradio/usrp/usrp_swig.py, line 6, in module ImportError: No module named _usrp_swig thanks for the help. Joe Have you set your PYTHONPATH variable to point to /usr/lib/python2.6/dist-packages ? It is... for line in sys.path: print line ... /usr/lib/python2.6 /usr/lib/python2.6/plat-linux2 /usr/lib/python2.6/lib-tk /usr/lib/python2.6/lib-old /usr/lib/python2.6/lib-dynload /usr/lib/python2.6/dist-packages /usr/lib/python2.6/dist-packages/Numeric /usr/lib/python2.6/dist-packages/PIL /usr/lib/python2.6/dist-packages/gst-0.10 /var/lib/python-support/python2.6 /usr/lib/python2.6/dist-packages/gtk-2.0 /var/lib/python-support/python2.6/gtk-2.0 /usr/lib/python2.6/dist-packages/wx-2.8-gtk2-unicode /usr/local/lib/python2.6/dist-packages -- Marcus Leech Principal Investigator Shirleys Bay Radio Astronomy Consortium http://www.sbrac.org ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] Moon Bounce Experiment
Hello All, I'm working on a receiver to detect an 8 MHz signal being bounced off the moon. We have constructed a dipole array and the RF receivers are complete. I just purchased a USRP kit for data acquisition. The goal is to stream downconverted I/Q time-series with ~ 1 MHz bandwidth over the USB to a linux box. I've looked through the wiki and I'm going to start installation of gnuradio on Ubuntu 9.04 What examples should I start running first to make sure I've installed correctly? Great group, I'm really excited to start working with gnuradio. Thanks, Joe Craig ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Moon Bounce Experiment
I have managed to install gnuradio and run usrp_fft.py with success! Now for the questions... 1) I'm always seeing... Exception RuntimeError: 'maximum recursion depth exceeded while calling a Python object' in type 'exception.AttributeError' ignored . What does this mean, and how to fix it? 2) How do I save the I/Q stream to disk? I'm interested in the maximum bit resolution for the best dynamic range. I just want the raw time samples. 3) Some of the examples (like usrp_wfm_rcv.py) spit out ...aUaUaUaUaU... to the console and the sound is choppy. What does this mean, and is there a way to turn it off? 4) Is it possible to tweak parameters such as quadrature downconverter bandwidth/decimation, etc? thanks, Joe Craig On Oct 20, 2010, at 12:28 PM, Joseph Craig wrote: Hello All, I'm working on a receiver to detect an 8 MHz signal being bounced off the moon. We have constructed a dipole array and the RF receivers are complete. I just purchased a USRP kit for data acquisition. The goal is to stream downconverted I/Q time-series with ~ 1 MHz bandwidth over the USB to a linux box. I've looked through the wiki and I'm going to start installation of gnuradio on Ubuntu 9.04 What examples should I start running first to make sure I've installed correctly? Great group, I'm really excited to start working with gnuradio. Thanks, Joe Craig ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Moon Bounce Experiment
On 10/20/2010 07:13 PM, Joseph Craig wrote: I have managed to install gnuradio and run usrp_fft.py with success! Now for the questions... 1) I'm always seeing... Exception RuntimeError: 'maximum recursion depth exceeded while calling a Python object' in type 'exception.AttributeError' ignored . What does this mean, and how to fix it? In what application are you seeing this error? 2) How do I save the I/Q stream to disk? I'm interested in the maximum bit resolution for the best dynamic range. I just want the raw time samples. You should investigate gnuradio-companion (GRC), which allows you to put a signal processing graph together graphically--like LEGO building blocks. You can very easily put together a baseband recorder application in about 5 minutes this way. 3) Some of the examples (like usrp_wfm_rcv.py) spit out ...aUaUaUaUaU... to the console and the sound is choppy. What does this mean, and is there a way to turn it off? It means that you're experiencing a audio underrun, likely because your processing chain can't keep up. Perhaps because you haven't specified a high enough decimation, and the chain is trying to keep up with a unpleasantly-large torrent of data. 4) Is it possible to tweak parameters such as quadrature downconverter bandwidth/decimation, etc? thanks, Joe Craig Yes, absolutely. Most of the example programs take a -d option that controls decimation in the USRP hardware. For example, if you only wanted 1MHz bandwidth, you'd use a -d option to the examples (like usrp_fft.py) of -d 64, which will give you 1Msps of complex samples between the USRP and the host--because the A/D in the USRP is 64Msps. For the USRP2, the A/D operates at 100Msps, so you'd need to adjust your decimation appropriately. You should keep in mind that except for trivial algorithms at modest bandwidths, you'll need a fairly-decent computer to get the best results from your Gnu Radio experiments. Although I think you mentioned that at first you only want to record baseband data to disk at 1Msps, I'm guessing you'll want to go beyond that at some point. I'd explore gnuradio-companion as well. Good luck! -- Principal Investigator Shirleys Bay Radio Astronomy Consortium http://www.sbrac.org ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Moon Bounce Experiment
Hi Marcus, Thanks for the quick reply... On Oct 20, 2010, at 5:51 PM, Marcus D. Leech wrote: On 10/20/2010 07:13 PM, Joseph Craig wrote: I have managed to install gnuradio and run usrp_fft.py with success! Now for the questions... 1) I'm always seeing... Exception RuntimeError: 'maximum recursion depth exceeded while calling a Python object' in type 'exception.AttributeError' ignored . What does this mean, and how to fix it? In what application are you seeing this error? python 2) How do I save the I/Q stream to disk? I'm interested in the maximum bit resolution for the best dynamic range. I just want the raw time samples. You should investigate gnuradio-companion (GRC), which allows you to put a signal processing graph together graphically--like LEGO building blocks. You can very easily put together a baseband recorder application in about 5 minutes this way. 5 minutes is pretty enticing seeing how this has to be working friday. How long does it take to setup GRC? Is there a guide? 3) Some of the examples (like usrp_wfm_rcv.py) spit out ...aUaUaUaUaU... to the console and the sound is choppy. What does this mean, and is there a way to turn it off? It means that you're experiencing a audio underrun, likely because your processing chain can't keep up. Perhaps because you haven't specified a high enough decimation, and the chain is trying to keep up with a unpleasantly-large torrent of data. ah, yes. should have thought of this. I will check out increasing the decimation. 4) Is it possible to tweak parameters such as quadrature downconverter bandwidth/decimation, etc? thanks, Joe Craig Yes, absolutely. Most of the example programs take a -d option that controls decimation in the USRP hardware. For example, if you only wanted 1MHz bandwidth, you'd use a -d option to the examples (like usrp_fft.py) of -d 64, which will give you 1Msps of complex samples between the USRP and the host--because the A/D in the USRP is 64Msps. For the USRP2, the A/D operates at 100Msps, so you'd need to adjust your decimation appropriately. Got it! You should keep in mind that except for trivial algorithms at modest bandwidths, you'll need a fairly-decent computer to get the best results from your Gnu Radio experiments. Although I think you mentioned that at first you only want to record baseband data to disk at 1Msps, I'm guessing you'll want to go beyond that at some point. it's a year old linux box we were using for fairly high bandwidth recording from ethernet, so it should be ok. Joe I'd explore gnuradio-companion as well. Good luck! -- Principal Investigator Shirleys Bay Radio Astronomy Consortium http://www.sbrac.org ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Moon Bounce Experiment
On Wed, 2010-10-20 at 18:49 -0600, Joseph Craig wrote: Hi Marcus, Thanks for the quick reply... On Oct 20, 2010, at 5:51 PM, Marcus D. Leech wrote: On 10/20/2010 07:13 PM, Joseph Craig wrote: I have managed to install gnuradio and run usrp_fft.py with success! Now for the questions... 1) I'm always seeing... Exception RuntimeError: 'maximum recursion depth exceeded while calling a Python object' in type 'exception.AttributeError' ignored . What does this mean, and how to fix it? In what application are you seeing this error? python I think Marcus is asking which Python application you are seeing the exception in. Is it in usrp_fft.py? 2) How do I save the I/Q stream to disk? I'm interested in the maximum bit resolution for the best dynamic range. I just want the raw time samples. You should investigate gnuradio-companion (GRC), which allows you to put a signal processing graph together graphically--like LEGO building blocks. You can very easily put together a baseband recorder application in about 5 minutes this way. 5 minutes is pretty enticing seeing how this has to be working friday. How long does it take to setup GRC? Is there a guide? You can also use usrp_rx_cfile.py to save the raw complex stream to disk. The help info for that file is pretty self-explanatory. However, GRC is very very useful for putting together flowgraphs quickly. Follow the Gnuradio build guide to get GRC built. 3) Some of the examples (like usrp_wfm_rcv.py) spit out ...aUaUaUaUaU... to the console and the sound is choppy. What does this mean, and is there a way to turn it off? It means that you're experiencing a audio underrun, likely because your processing chain can't keep up. Perhaps because you haven't specified a high enough decimation, and the chain is trying to keep up with a unpleasantly-large torrent of data. ah, yes. should have thought of this. I will check out increasing the decimation. You might also have the infamous two-clocks problem, which I won't explain in detail here. But basically the soundcard clock might not be exactly what it says it is, and if it's off enough from what the flowgraph assumes it is, you will drop samples or underrun depending on which way the error lies. We really need a better sound driver in GR and if I ever see free time again I'll be working on it. Nick 4) Is it possible to tweak parameters such as quadrature downconverter bandwidth/decimation, etc? Yes, absolutely. Most of the example programs take a -d option that controls decimation in the USRP hardware. For example, if you only wanted 1MHz bandwidth, you'd use a -d option to the examples (like usrp_fft.py) of -d 64, which will give you 1Msps of complex samples between the USRP and the host--because the A/D in the USRP is 64Msps. For the USRP2, the A/D operates at 100Msps, so you'd need to adjust your decimation appropriately. Got it! You should keep in mind that except for trivial algorithms at modest bandwidths, you'll need a fairly-decent computer to get the best results from your Gnu Radio experiments. Although I think you mentioned that at first you only want to record baseband data to disk at 1Msps, I'm guessing you'll want to go beyond that at some point. it's a year old linux box we were using for fairly high bandwidth recording from ethernet, so it should be ok. Joe I'd explore gnuradio-companion as well. Good luck! -- Principal Investigator Shirleys Bay Radio Astronomy Consortium http://www.sbrac.org ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Moon Bounce Experiment
On 10/20/2010 08:49 PM, Joseph Craig wrote: Hi Marcus, Thanks for the quick reply... On Oct 20, 2010, at 5:51 PM, Marcus D. Leech wrote: On 10/20/2010 07:13 PM, Joseph Craig wrote: I have managed to install gnuradio and run usrp_fft.py with success! Now for the questions... 1) I'm always seeing... Exception RuntimeError: 'maximum recursion depth exceeded while calling a Python object' in type 'exception.AttributeError' ignored . What does this mean, and how to fix it? In what application are you seeing this error? python I should perhaps have clarified. Which application, written, obviously, in Python, was producing this error for you? 2) How do I save the I/Q stream to disk? I'm interested in the maximum bit resolution for the best dynamic range. I just want the raw time samples. You should investigate gnuradio-companion (GRC), which allows you to put a signal processing graph together graphically--like LEGO building blocks. You can very easily put together a baseband recorder application in about 5 minutes this way. 5 minutes is pretty enticing seeing how this has to be working friday. How long does it take to setup GRC? Is there a guide? If built/installed Gnu Radio, you already have GRC/GnuRadioCompanion: gnuradio-companion At the prompt in a terminal window should bring up a GRC instance. All you should need is a usrp-source block, and a file-sink block. The usrp-source block takes parameters like decimation, center-frequency, gain. -- Marcus Leech Principal Investigator Shirleys Bay Radio Astronomy Consortium http://www.sbrac.org ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Moon Bounce Experiment
On 10/20/2010 08:57 PM, Nick Foster wrote: You can also use usrp_rx_cfile.py to save the raw complex stream to disk. The help info for that file is pretty self-explanatory. However, GRC is very very useful for putting together flowgraphs quickly. Follow the Gnuradio build guide to get GRC built. Forgot about usrp_rx_cfile.py doh! -- Marcus Leech Principal Investigator Shirleys Bay Radio Astronomy Consortium http://www.sbrac.org ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Moon Bounce Experiment
On Wed, Oct 20, 2010 at 06:49:21PM -0600, Joseph Craig wrote: Hi Marcus, Thanks for the quick reply... On Oct 20, 2010, at 5:51 PM, Marcus D. Leech wrote: On 10/20/2010 07:13 PM, Joseph Craig wrote: I have managed to install gnuradio and run usrp_fft.py with success! Now for the questions... 1) I'm always seeing... Exception RuntimeError: 'maximum recursion depth exceeded while calling a Python object' in type 'exception.AttributeError' ignored . What does this mean, and how to fix it? In what application are you seeing this error? python Which version of GNU Radio are you using? tarball? If so, which one? git? If so, which branch? Eric ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Moon Bounce Experiment
On Oct 20, 2010, at 7:07 PM, Eric Blossom wrote: On Wed, Oct 20, 2010 at 06:49:21PM -0600, Joseph Craig wrote: Hi Marcus, Thanks for the quick reply... On Oct 20, 2010, at 5:51 PM, Marcus D. Leech wrote: On 10/20/2010 07:13 PM, Joseph Craig wrote: I have managed to install gnuradio and run usrp_fft.py with success! Now for the questions... 1) I'm always seeing... Exception RuntimeError: 'maximum recursion depth exceeded while calling a Python object' in type 'exception.AttributeError' ignored . What does this mean, and how to fix it? In what application are you seeing this error? python Which version of GNU Radio are you using? tarball? If so, which one? git? If so, which branch? I've install gnuradio from Synaptic Package Manager. Looks like 3.0.4 I see this error when every gnuradio python application is run. thanks, Joe Craig Eric ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Moon Bounce Experiment
On Oct 20, 2010, at 6:58 PM, Marcus D. Leech wrote: On 10/20/2010 08:49 PM, Joseph Craig wrote: Hi Marcus, Thanks for the quick reply... On Oct 20, 2010, at 5:51 PM, Marcus D. Leech wrote: On 10/20/2010 07:13 PM, Joseph Craig wrote: I have managed to install gnuradio and run usrp_fft.py with success! Now for the questions... 1) I'm always seeing... Exception RuntimeError: 'maximum recursion depth exceeded while calling a Python object' in type 'exception.AttributeError' ignored . What does this mean, and how to fix it? In what application are you seeing this error? python I should perhaps have clarified. Which application, written, obviously, in Python, was producing this error for you? 2) How do I save the I/Q stream to disk? I'm interested in the maximum bit resolution for the best dynamic range. I just want the raw time samples. You should investigate gnuradio-companion (GRC), which allows you to put a signal processing graph together graphically--like LEGO building blocks. You can very easily put together a baseband recorder application in about 5 minutes this way. 5 minutes is pretty enticing seeing how this has to be working friday. How long does it take to setup GRC? Is there a guide? If built/installed Gnu Radio, you already have GRC/GnuRadioCompanion: gnuradio-companion At the prompt in a terminal window should bring up a GRC instance. nope, command not found. I thought it was because I installed gnuradio with synaptic, so I installed gnuradio-companion via apt-get, still nothing. where should the program files appear? All you should need is a usrp-source block, and a file-sink block. sounds like simulink. should be easy. Joe The usrp-source block takes parameters like decimation, center-frequency, gain. -- Marcus Leech Principal Investigator Shirleys Bay Radio Astronomy Consortium http://www.sbrac.org ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Moon Bounce Experiment
On 10/21/2010 01:02 AM, Joseph Craig wrote: On Oct 20, 2010, at 7:07 PM, Eric Blossom wrote: On Wed, Oct 20, 2010 at 06:49:21PM -0600, Joseph Craig wrote: Hi Marcus, Thanks for the quick reply... On Oct 20, 2010, at 5:51 PM, Marcus D. Leech wrote: On 10/20/2010 07:13 PM, Joseph Craig wrote: I have managed to install gnuradio and run usrp_fft.py with success! Now for the questions... 1) I'm always seeing... Exception RuntimeError: 'maximum recursion depth exceeded while calling a Python object' in type 'exception.AttributeError' ignored . What does this mean, and how to fix it? In what application are you seeing this error? python Which version of GNU Radio are you using? tarball? If so, which one? git? If so, which branch? I've install gnuradio from Synaptic Package Manager. Looks like 3.0.4 I see this error when every gnuradio python application is run. thanks, Joe Craig Eric My recollection is that there was a compatibility issue between older Gnu Radio code, and the Python2.6 that's in Ubuntu 9.X and more recent. Really, you'll have much better joy if you install from GIT source, following the directions found here: http://gnuradio.org/redmine/wiki/gnuradio/BuildGuide You'll have to uninstall the version that Synaptic installed. Gnu radio is still very much a rapidly-evolving beast, which means that installing from GIT source is really a good way to go. The packagers for various Linux distributions can't possibly keep up with the codebase. -- Principal Investigator Shirleys Bay Radio Astronomy Consortium http://www.sbrac.org ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
