Re: [Discuss-gnuradio] OFDM MODULATION/DEMODULATION PROBLEM
1)removed still no output...:-( 2)thread[thread-per-block[0]: gr_block gr uhd usrp source (12)]: caught unrecognized exception i think this is not an error as it appears when i close the window 3) i have connected scope with random source to see transmitted integers still no output at receiver. (tried even simple sin wave). Regards Bilal Abbasi -- View this message in context: http://gnuradio.4.n7.nabble.com/OFDM-MODULATION-DEMODULATION-PROBLEM-tp38053p38069.html Sent from the GnuRadio mailing list archive at Nabble.com. ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] Job opening working for me
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Re: [Discuss-gnuradio] issue with GRC on ubuntu 12.10 - Segmentation Fault when launching the tool
Nella citazione in data Fri Oct 19 03:47:41 2012, Josh Blum ha scritto: On 10/18/2012 05:49 PM, Arturo Rinaldi wrote: After successfully building gnuradio 3.6.2 on *ubuntu quantal quetzal 12.10* i get this error when launching gnuradio-companion : /* *//*artynet@artynet-VirtualBox:/usr/local/bin$ gnuradio-companion */ /*Traceback (most recent call last):*//* *//* File /usr/local/bin/gnuradio-companion, line 58, in module*//* *//*from gnuradio.grc.python.Platform import Platform*//* *//* File /usr/local/lib/python2.7/dist-packages/gnuradio/grc/python/Platform.py, line 22, in module*//* *//*from .. base.Platform import Platform as _Platform*//* *//* File /usr/local/lib/python2.7/dist-packages/gnuradio/grc/base/Platform.py, line 22, in module*//* *//*from .. base import ParseXML, odict*//* *//* File /usr/local/lib/python2.7/dist-packages/gnuradio/grc/base/ParseXML.py, line 20, in module*//* *//*from lxml import etree*//* *//* File lxml.etree.pyx, line 67, in init lxml.etree (src/lxml/lxml.etree.c:160085)*//* *//* File /usr/lib/python2.7/io.py, line 51, in module*//* *//*import _io*//* *//*TypeError: type '_io._IOBase' participates in gc and is a base type but has inappropriate tp_free slot*//* *//*Segmentation Fault (core dump created) The error seems to be entirely from lxml. So I would guess that this is an lxml issue not gnuradio related. Can you try to run python -c from lxml import etree and see if the error happens? -josh */I satisfied all the required dependencies with the build-gnuradio script by SBRAC. Any ideas to solve this issue, it never happened to me in any build of GNURadio from stable tarball. Do I have to install some other python package ? Thank you in advance Kind Regards Arturo ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio the python importing process (python -c from lxml import etree) exits without any error. I decided to switch to the 3.6.1 version from quantal repos until the problem is solved. I tried to install different versions of lxml from pipy but without any success. Regards, Arturo ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] issue with GRC on ubuntu 12.10 - Segmentation Fault when launching the tool
the python importing process (python -c from lxml import etree) exits without any error. I decided to switch to the 3.6.1 version from quantal repos until the problem is solved. I tried to install different versions of lxml from pipy but without any success. It sounds like one of these order of import bugs. Very hard to track down and fix :-( -josh ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] OFDM MODULATION/DEMODULATION PROBLEM
On 10/19/2012 05:09 AM, Bilal wrote: 1)removed still no output...:-( 2)thread[thread-per-block[0]: gr_block gr uhd usrp source (12)]: caught unrecognized exception i think this is not an error as it appears when i close the window That might be ok. I think its a boost issue on ubuntu 10.04. So I am guessing this is ubuntu 10.04, but i could be wrong :-) 3) i have connected scope with random source to see transmitted integers still no output at receiver. (tried even simple sin wave). The scope sink is working for you, right? No some weird OpenGL freezing issue. If you make a simulation only flow graph like noise_source -throttle-scope sink, you see the noise? I suppose the first thing to do before transmitting OFDM would be to verify the RX chain with some simple test tones. Is the antenna selection correct, power levels, etc. Does the daughterboard report locked when tuned? -josh PS: some of the uhd examples liek ascii_art_dft automatically check for dboard lock; hope that helps ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] issue with GRC on ubuntu 12.10 - Segmentation Fault when launching the tool
On Fri, Oct 19, 2012 at 11:34 AM, Josh Blum j...@ettus.com wrote: the python importing process (python -c from lxml import etree) exits without any error. I decided to switch to the 3.6.1 version from quantal repos until the problem is solved. I tried to install different versions of lxml from pipy but without any success. It sounds like one of these order of import bugs. Very hard to track down and fix :-( -josh My new machine has a brand new install of 12.10 and I'm seeing the same issues. It looks like it's happening on this line in gnuradio-companion: from gnuradio.grc.python.Platform import Platform What's odd is that I can run 'ipython pathto/gnuradio-companion' and it runs just fine. If I use python instead of ipython, I get the segfault. Tom ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] issue with GRC on ubuntu 12.10 - Segmentation Fault when launching the tool
On Fri, Oct 19, 2012 at 03:53:21PM -0400, Tom Rondeau wrote: My new machine has a brand new install of 12.10 and I'm seeing the same issues. It looks like it's happening on this line in gnuradio-companion: from gnuradio.grc.python.Platform import Platform What's odd is that I can run 'ipython pathto/gnuradio-companion' and it runs just fine. If I use python instead of ipython, I get the segfault. Hm, doesn't ipython auto-import some modules? That might narrow it down. MB -- Karlsruhe Institute of Technology (KIT) Communications Engineering Lab (CEL) Dipl.-Ing. Martin Braun Research Associate Kaiserstraße 12 Building 05.01 76131 Karlsruhe Phone: +49 721 608-43790 Fax: +49 721 608-46071 www.cel.kit.edu KIT -- University of the State of Baden-Württemberg and National Laboratory of the Helmholtz Association pgpAv8l79xl3r.pgp Description: PGP signature ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] issue with GRC on ubuntu 12.10 - Segmentation Fault when launching the tool
Johnathan Corgan and I /might/ have tracked down the problem. Please check out the branch 'rtld_ticket181_undo' on my github git repo: git://github.com/trondeau/gnuradio.git This undoes something that was put in a while ago to make up for a problem with exceptions in SWIG. We think that a) SWIG now handles this stuff better and b) someone (ld, Python, stdc, etc., etc.) have updated their behavior to cause a conflict with how things run. On my 12.10 box, this patch allows me to run GRC again. Also, I could not run 'from gnuradio import audio' before but can now. This is a bit touchy since this code has been in here for so long. We're concerned that people might be relying on it and that removing it could cause some other, unknown behavior. At the same time, getting GRC to run again is a pretty big deal. Please check out and test the branch and let me know how it works on your currently broken systems or on your currently working system to see if it breaks anything. This was branched off today's master branch. Tom On Fri, Oct 19, 2012 at 6:46 PM, Martin Braun (CEL) martin.br...@kit.edu wrote: On Fri, Oct 19, 2012 at 03:53:21PM -0400, Tom Rondeau wrote: My new machine has a brand new install of 12.10 and I'm seeing the same issues. It looks like it's happening on this line in gnuradio-companion: from gnuradio.grc.python.Platform import Platform What's odd is that I can run 'ipython pathto/gnuradio-companion' and it runs just fine. If I use python instead of ipython, I get the segfault. Hm, doesn't ipython auto-import some modules? That might narrow it down. MB -- Karlsruhe Institute of Technology (KIT) Communications Engineering Lab (CEL) Dipl.-Ing. Martin Braun Research Associate Kaiserstraße 12 Building 05.01 76131 Karlsruhe Phone: +49 721 608-43790 Fax: +49 721 608-46071 www.cel.kit.edu KIT -- University of the State of Baden-Württemberg and National Laboratory of the Helmholtz Association ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
