Re: [Discuss-gnuradio] implementing actual blocks in python

2007-11-06 Thread Eric Blossom
On Tue, Nov 06, 2007 at 08:20:17PM -0500, Josh Blum wrote: > Hello, > > I was thinking of an interesting feature for gnuradio: Suppose that the > gnuradio framework could also support blocks written in python. Not > hier-blocks, but actual data processing done in python. Meaning, one > would wr

[Discuss-gnuradio] Frequency hopping in GNU radio

2007-11-06 Thread GIRIDHAR PATNAIK
Hi All, Does the architecture of Universal Software Radio Peripheral for GNU radio support frequency hopping? How easy is it, if not already supported, to customize GNU radio to support frequency hopping. What is involved in implementing it. Has anyone implemented frequency hopping? If

[Discuss-gnuradio] implementing actual blocks in python

2007-11-06 Thread Josh Blum
Hello, I was thinking of an interesting feature for gnuradio: Suppose that the gnuradio framework could also support blocks written in python. Not hier-blocks, but actual data processing done in python. Meaning, one would write a python class. The class would have an io signature, and a funct

Re: [Discuss-gnuradio] Segmentation fault when running usrp_spectrum_sense.py

2007-11-06 Thread Michael Dickens
As another data point: Sometimes this happens on OSX, and sometimes it doesn't. On otherwise identical computers (Intel-iMac, 10.4.10, latest updates, MacPorts for background libraries, includes, and apps), with the only difference being the version of Python and related python stuff (2.4

Re: [Discuss-gnuradio] Segmentation fault when running usrp_spectrum_sense.py

2007-11-06 Thread Ruby Lin
I am using 32-bit machine using Ubuntu. Thanks for your further investigation. Ruby Eric Blossom wrote: > > On Tue, Nov 06, 2007 at 01:35:17PM -0800, Ruby Lin wrote: >> >> Hi all, >> >> I updated my gnuradio to gnuradio-3.1.0. And when I run >> usrp_spectrum_sense.py, it gives the output li

Re: [Discuss-gnuradio] Segmentation fault when running usrp_spectrum_sense.py

2007-11-06 Thread Eric Blossom
On Tue, Nov 06, 2007 at 03:00:19PM -0800, Eric Blossom wrote: > On Tue, Nov 06, 2007 at 01:35:17PM -0800, Ruby Lin wrote: > > > > Hi all, > > > > I updated my gnuradio to gnuradio-3.1.0. And when I run > > usrp_spectrum_sense.py, it gives the output like: > > > > == >

[Discuss-gnuradio] Re: Dead USRP

2007-11-06 Thread David
Keith, I just had the same thing happen about a month ago. Pretty much the same error messages you report. I ended up sending it in to Matt. I would email him directly to see if this is a possibility. On a bright note: I just got it back and it works great. Matt was very straight about the pos

Re: [Discuss-gnuradio] Segmentation fault when running usrp_spectrum_sense.py

2007-11-06 Thread Eric Blossom
On Tue, Nov 06, 2007 at 01:35:17PM -0800, Ruby Lin wrote: > > Hi all, > > I updated my gnuradio to gnuradio-3.1.0. And when I run > usrp_spectrum_sense.py, it gives the output like: > > == > $ sudo ./usrp_spectrum_sense.py 400M 450M > Using RX d'board A: TV Rx Rev 2 >

Re: [Discuss-gnuradio] Spurious samples in data set??

2007-11-06 Thread Eric Blossom
On Tue, Nov 06, 2007 at 11:45:59PM +0200, Aadil Volkwin wrote: > Hi, > > Thanks for taking the time to answer my questions. > > I'd like to seek clarity on your first point, how am I losing the quadrature > component? You're using gr.complex_to_float, and then only using one of the two output st

[Discuss-gnuradio] Segmentation fault when running usrp_spectrum_sense.py

2007-11-06 Thread Ruby Lin
Hi all, I updated my gnuradio to gnuradio-3.1.0. And when I run usrp_spectrum_sense.py, it gives the output like: == $ sudo ./usrp_spectrum_sense.py 400M 450M Using RX d'board A: TV Rx Rev 2 gain = 57.5 Segmentation fault == Could anyone g

Re: [Discuss-gnuradio] I and Q samples out of FPGA receive chain

2007-11-06 Thread Johnathan Corgan
On 11/6/07, Nirali Patel <[EMAIL PROTECTED]> wrote: > If I use > > u._write_fpga_reg(FR_DEBUG_EN, bmFR_DEBUG_EN_RX_A | bmFR_DEBUG_EN_TX_A) > > it does not enable the Basic TX on side A. You haven't enabled TX_A debug pins as outputs. -- Johnathan Corgan Corgan Enterprises LLC http://corganenter

Re: [Discuss-gnuradio] Spurious samples in data set??

2007-11-06 Thread Eric Blossom
On Tue, Nov 06, 2007 at 12:46:02PM +0200, Aadil Volkwin wrote: > Hi > > Attached is code i've used to write a signal to file and subsequently to > plot the samples. > additionally i've attached the plot. > > Can anyone tell me what may be causing the huge spike at the beginning of > the data set?

[Discuss-gnuradio] Re: Help:How to print the payload in benchmark_ofdm_tx.py

2007-11-06 Thread Archana Ragothaman
Message: 2 Date: Wed, 17 Oct 2007 18:45:15 -0700 From: Eric Blossom <[EMAIL PROTECTED]> Subject: Re: [Discuss-gnuradio] Help:How to print the payload in benchmark_ofdm_tx.py To: Archana Ragothaman <[EMAIL PROTECTED]> Cc: discuss-gnuradio@gnu.org, Johnathan Corgan <[EMAIL PROTECTED]> Message-

RE: [Discuss-gnuradio] I and Q samples out of FPGA receive chain

2007-11-06 Thread Nirali Patel
Jonathan, Thanks for your response. I can see the ch0rx signal toggling on my Basic RX in slot A using the following command u = usrp.source_c(0,decim_rate=8,fpga_filename="mytestfile.rbf") u._write_oe(0,0x,ox)# for enabling A side Basic RX u._write_fpga_reg(FR_DEBUG_EN, bmFR_D

Re: [Discuss-gnuradio] Spurious samples in data set??

2007-11-06 Thread Dan Halperin
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Please don't send attachments to the GNU radio mailing list. It's a known issue that the USRP sends some spurious large amplitude samples right after it is enabled. You can safely ignore them. - -Dan Aadil Volkwin wrote: > Hi > > Attached is code i