[Discuss-gnuradio] Problem with GRC after installation with build-gnuradio

2013-06-28 Thread Tim Esemann
Hi, I have installed GR with the build-gnuradio script from Marcus. In the past it worked well on several machines, but now I have a problem with the gnuradio companion after installation. Once I start the grc from the command line I get a segmentation fault: esemannt@gr01-desktop:~/source$ gnura

Re: [Discuss-gnuradio] delete_head_blocking()

2013-06-28 Thread Bastian Bloessl
Hi, On 06/28/2013 08:57 AM, Martin Braun (CEL) wrote: Synopsis: Don't block in work() => don't use this call. Perhaps it makes sense to register a message handler (think of it as a work function for a specific message). Even if the only input of the block is a message port? Bastian _

Re: [Discuss-gnuradio] delete_head_blocking()

2013-06-28 Thread Martin Braun (CEL)
On Fri, Jun 28, 2013 at 10:48:09AM +0200, Bastian Bloessl wrote: > Hi, > > On 06/28/2013 08:57 AM, Martin Braun (CEL) wrote: > >Synopsis: Don't block in work() => don't use this call. > >Perhaps it makes sense to register a message handler (think of it as a > >work function for a specific message)

[Discuss-gnuradio] Cannot import gnuradio

2013-06-28 Thread Liang Xian Loong
Dear Helpers, I had downgraded GNU Radio from GNU Radio 3.7 to GNU Radio 3.6.4, but when I run gnuradio-companion in Ubuntu 13.04 Terminal, I received the following message: *Cannot import gnuradio.* *Is the python path environment variable set correctly? * * All OS: PYTHONPATH* * * *Is the lib

Re: [Discuss-gnuradio] delete_head_blocking()

2013-06-28 Thread Bastian Bloessl
On 06/28/2013 11:21 AM, Martin Braun (CEL) wrote: On Fri, Jun 28, 2013 at 10:48:09AM +0200, Bastian Bloessl wrote: Hi, On 06/28/2013 08:57 AM, Martin Braun (CEL) wrote: Synopsis: Don't block in work() => don't use this call. Perhaps it makes sense to register a message handler (think of it as

Re: [Discuss-gnuradio] delete_head_blocking()

2013-06-28 Thread Bastian Bloessl
OK, I see. Thanks for that detailed explanation! Bastian On 06/28/2013 04:29 PM, Johnathan Corgan wrote: On Fri, Jun 28, 2013 at 6:48 AM, Bastian Bloessl mailto:bastian.bloe...@uibk.ac.at>> wrote: so it is the intended behavior that the work function is called all over the time (and

Re: [Discuss-gnuradio] delete_head_blocking()

2013-06-28 Thread Johnathan Corgan
On Fri, Jun 28, 2013 at 6:48 AM, Bastian Bloessl wrote: > so it is the intended behavior that the work function is called all over > the time (and immediately returns)? I just checked for the pdu to tagged > stream block and its called ~500k times per second. > This is a known issue specific to

[Discuss-gnuradio] UHD error

2013-06-28 Thread Jay Prakash
I have 4 N210 USRP accessible via switch. Though it use to come sometime but today even uhd_find_devices gives the same error! UHD Error: Control packet attempt 0, sequence number 6: RuntimeError: no control response, possible packet loss UHD Error: Control packet attempt 0, sequenc

Re: [Discuss-gnuradio] make test passes, but Linux kernel log says "undefined instruction"

2013-06-28 Thread Monahan-Mitchell, Tim
> Gnu Radio v3.6.4.2 on ARM target. > make test : 100% pass. > But this happens each time python does "from gnuradio import gr_unittest": > <6>[ 390.919792] python (1771): undefined instruction: pc=42a9c328 <6>[ > 390.919822] Code: f26ee1fe e12fff1e (ee190f1d) > For example,

[Discuss-gnuradio] benchmark_rate issue

2013-06-28 Thread Jay Prakash
I am doing spectrum sensing at 8MHz sampling rate using N210 series. I have 4 USRPs accessible via switch. But on setting sample rate as high as 8 MHz the code runs for few seconds and comes out with UHD Error. I did benchmark test as follows:- *./benchmark_rate --args="addr=10.32.19.159" --rx_r

Re: [Discuss-gnuradio] delete_head_blocking()

2013-06-28 Thread Josh Blum
> > Longer term, the plan is to add scheduler provided functions to call so > block work() functions can ask the scheduler to "call me again when this > happens" and the scheduler can handle the blocking/response in a way the > gets along with everything else. > > TL;DR We're working on it :) >

Re: [Discuss-gnuradio] UHD error

2013-06-28 Thread Josh Blum
On 06/28/2013 12:29 PM, Jay Prakash wrote: > I have 4 N210 USRP accessible via switch. > > Though it use to come sometime but today even uhd_find_devices gives the > same error! > Same error different packets. What is your network configuration like? Is this part of the main office network/or

Re: [Discuss-gnuradio] Problem in uhd_fft

2013-06-28 Thread Josh Blum
On 06/27/2013 09:44 AM, Karan Talasila wrote: > Hi, > I am using a basic tx and basic rx daughterboard for transmission and > reception. The spec says basic tx and basic rx run from 0 to 250 MHz. But > when i run transmitter and check the uhd_fft at receiver, after 32 Mhz, > there is no sig

Re: [Discuss-gnuradio] benchmark_rate issue

2013-06-28 Thread Josh Blum
> > How can I achieve higher sample rate on my system? > Is it mainly due to switch in between? > >From your previous email, it sounded like you may have something "interesting" with your network configuration, or network topology. I recommend first trying with a direct connection to a gigE po

[Discuss-gnuradio] digital_ofdm_cyclic_prefixer::work

2013-06-28 Thread Stefano
Hi all, please can someone tell me why that work method ( like others in the digital_odfm_xx ) does not call consume_each (n) or consume ( i,n ) ? many thanks, Stefano ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/