Re: [Discuss-gnuradio] WAV sink

2012-03-27 Thread Martin Braun
On Tue, Mar 27, 2012 at 12:21:50AM -0300, John Coppens wrote: 2) The wav sink doesn't seem to close the wav-file correctly. After writing an 82MB file, the size of the file (bytes 4-7) were 0. Many programs don't seem to mind this. 'snd' doesn't like it and won't open the file. Also, the

Re: [Discuss-gnuradio] Building new blocks in Gnu Radio

2012-03-27 Thread Martin Braun
On Mon, Mar 26, 2012 at 12:27:42PM -0700, Nick Foster wrote: After this, I used cmake. I wrote: cmake -i sudo make sudo make install sudo ldconfig I assume you know what you're doing, but just in case someone reads this who doesn't, the recommended way is mkdir build cd

[Discuss-gnuradio] Strange problem when using build-gnuradio script

2012-03-27 Thread Wu Ting
Hi all, I'm using build-gnuradio script to build gnuradio and uhd. It works well before (both on Ubuntu 10.04 and 11.10). However, on my current computer (Ubuntu 10.04), it has a strange problem. At first, it kept showing some libs are not found. After installing these libs and trying for

Re: [Discuss-gnuradio] Strange problem when using build-gnuradio script

2012-03-27 Thread Marcus D. Leech
On 03/27/2012 03:59 AM, Wu Ting wrote: Hi all, I'm using build-gnuradio script to build gnuradio and uhd. It works well before (both on Ubuntu 10.04 and 11.10). However, on my current computer (Ubuntu 10.04), it has a strange problem. At first, it kept showing some libs are not found. After

[Discuss-gnuradio] Python shared libraries installed to /usr/lib/ on x86_64 architecture

2012-03-27 Thread Joschi Brauchle
Hello everyone, I am having the following problem on an x86_64 linux machine: When I use the ZIP-release (currently 3.5.2.1, using configuremake) from the GNUradio homepage to build GNUradio, the python shared libraries always get installed to %{prefix}/lib/python.../ instead of

Re: [Discuss-gnuradio] B100 as clock master + B100 as clock slave

2012-03-27 Thread Vincenzo Pellegrini
Hi Nick, thanks for the answer. Everything clear. Just a further question. Would a 0V-mean, 3.3V peak-to-peak sinusoid be correct as a reference signal for the B100? regards vince Il giorno 23 marzo 2012 18:30, Nick Foster n...@ettus.com ha scritto: On Fri, Mar 23, 2012 at 10:18 AM,

Re: [Discuss-gnuradio] B100 as clock master + B100 as clock slave

2012-03-27 Thread Vincenzo Pellegrini
Josh, I agree this would be a great feature. vince There is a clock sync pin (cgen_sync_b in the fpga top level). Presumably, a shared PPS could trigger the clock sync signal across multiple B100. This would synchronously reset the phase across all N devices. It would require a little FPGA

Re: [Discuss-gnuradio] B100 as clock master + B100 as clock slave

2012-03-27 Thread Rafael Diniz
Hi Vince, Changing a little the topic, have you managed to run your SoftDVB code to work on multiple USRPs in order to create a SFN DVB configuration? Best regards, Rafael Diniz Josh, I agree this would be a great feature. vince There is a clock sync pin (cgen_sync_b in the fpga top

Re: [Discuss-gnuradio] WAV sink

2012-03-27 Thread John Coppens
On Tue, 27 Mar 2012 09:36:14 +0200 Martin Braun martin.br...@kit.edu wrote: These bytes can only be set once the writing is finished, and it's called from the destructor, so that might not be getting called...? It also gets called when the WAV file changes. Calling close() manually is also

[Discuss-gnuradio] Re : Use USRP1 and USRP N200 at the same time

2012-03-27 Thread Noé Beuret
Hi! I have not managed to install what I wanted for my school project. After gnuradio and uhd installation with the build_gnuradio script, uhd_find_device found only usrp n200 but not usrp1... I didn't have much time so I wouldn't touch anything in the first software. So I would start writing

Re: [Discuss-gnuradio] Building new blocks in Gnu Radio

2012-03-27 Thread Ben Reynwar
On Mon, Mar 26, 2012 at 12:54 PM, Ben Reynwar b...@reynwar.net wrote: On Mon, Mar 26, 2012 at 10:42 AM, Francisco francisco_pais...@hotmail.com wrote: Ben Reynwar ben at reynwar.net writes: I think that the best way to get started is to use Martins gr-modtool.  It will help you to make

Re: [Discuss-gnuradio] Re : Use USRP1 and USRP N200 at the same time

2012-03-27 Thread mleech
Try: uhd_usrp_probe --args type=usrp1 Then uhd_usrp_probe --args addr=192.168.10.2 That should (assuming you have networking setup correctly) give you probe outputs from both your USRP1 and N200. On Tue, 27 Mar 2012 16:06:05 +0100 (BST), Noé Beuret wrote: Hi! I have not

Re: [Discuss-gnuradio] Strange problem when using build-gnuradio script

2012-03-27 Thread mleech
Looks like there may be a bug in the PYTHONPATH finder inside build-gnuradio. This has almost zero downstream consequences, since it's merely offering a suggestion as to what to set your PYTHONPATH to in your .bashrc. It doesn't automatically edit your .bashrc--that's up to you. On Ubuntu

Re: [Discuss-gnuradio] B100 as clock master + B100 as clock slave

2012-03-27 Thread Nick Foster
On Tue, Mar 27, 2012 at 7:26 AM, Vincenzo Pellegrini wwvi...@gmail.comwrote: Hi Nick, thanks for the answer. Everything clear. Just a further question. Would a 0V-mean, 3.3V peak-to-peak sinusoid be correct as a reference signal for the B100? Use a 5-10dBm reference with no DC component.

Re: [Discuss-gnuradio] B100 as clock master + B100 as clock slave

2012-03-27 Thread Vincenzo Pellegrini
Thanks Nick, that's perfect. Il giorno 27 marzo 2012 18:05, Nick Foster n...@ettus.com ha scritto: On Tue, Mar 27, 2012 at 7:26 AM, Vincenzo Pellegrini wwvi...@gmail.comwrote: Hi Nick, thanks for the answer. Everything clear. Just a further question. Would a 0V-mean, 3.3V peak-to-peak

Re: [Discuss-gnuradio] B100 as clock master + B100 as clock slave

2012-03-27 Thread Vincenzo Pellegrini
Yes, there is a demo video on this from 2010 which you can view at my youtube channel http://www.youtube.com/user/wwvince1 It's called Soft-SFN. regards vince Il giorno 27 marzo 2012 16:44, Rafael Diniz raf...@riseup.net ha scritto: Hi Vince, Changing a little the topic, have you managed

Re: [Discuss-gnuradio] Building new blocks in Gnu Radio

2012-03-27 Thread Ben Reynwar
On Mon, Mar 26, 2012 at 10:42 AM, Francisco francisco_pais...@hotmail.com wrote: Ben Reynwar ben at reynwar.net writes: I think that the best way to get started is to use Martins gr-modtool.  It will help you to make out-of-tree blocks (out-of-tree means separate but compatible with your

Re: [Discuss-gnuradio] Strange problem when using build-gnuradio script

2012-03-27 Thread Marcus D. Leech
On 03/27/2012 08:44 AM, Wu Ting wrote: Hi, Thank you for your reply. I ran ./build-gnuradio --v The result is in the attached file. Could you have a look at it. Thank you! Wu Here's some clue, here: - Performing Test HAVE_PTHREAD_SETSCHEDPARAM - Success -- Performing Test

Re: [Discuss-gnuradio] [discuss-gnuradio]ofdm sync using only one preamble in gnuradio example benchmark_tx.py and benchmark_rx.py

2012-03-27 Thread Alex Zhang
Hi Tom, Thanks for the reply. In the ofdm_sync_pn.py, I see that a matched filter is used, after the timing metric is obtained based on the correlation of the two halves of the preamble. I understand this matched filter is trying to find the end of the plateau of the metric and get the smooth

Re: [Discuss-gnuradio] Strange problem when using build-gnuradio script

2012-03-27 Thread Wu Ting
Hi! Now it works! Thank you so much! Wu From: Marcus D. Leech [mailto:mle...@ripnet.com] Sent: Wednesday, March 28, 2012 6:07 AM To: Wu Ting Cc: discuss-gnuradio@gnu.org Subject: Re: [Discuss-gnuradio] Strange problem when using build-gnuradio script On 03/27/2012 08:44 AM, Wu Ting