Johnathan Corgan wrote:
> On Mon, Feb 9, 2009 at 7:07 PM, Chris Stankevitz
> wrote:
>
>> I wrote a c++ program that grabs data from the USRP in an infinite loop
>> and does nothing with it. It overruns. Can anyone help me figure out why?
>
> Can you try it without the call to set_format()?
J
Hello..
After installing all necessary libraries using MacPorts and following
instructions from Jon Jacky
(http://staff.washington.edu/jon/gr-osx/gr-osx.html), the make check
fails on my MacBook Pro.. Ignoring that and issuing 'make install'
leads to the same error when trying to import gnuradio i
Hello..
After installing all necessary libraries using MacPorts and following
instructions from Jon Jacky
(http://staff.washington.edu/jon/gr-osx/gr-osx.html), the make check
fails on my MacBook Pro.. Ignoring that and issuing 'make install'
leads to the same error when trying to import gnuradio i
On Mon, Feb 9, 2009 at 10:36 PM, Johnathan Corgan
wrote:
> On Mon, Feb 9, 2009 at 6:25 PM, Marcus D. Leech wrote:
>
>> Is there room in the USRP2 for building a 2048 lag autocorrelator with 1
>> or 2-bit sampling?
>
> Most likely. I did the investigation to implement a fully pipelined
> 2048 poi
Thanks for all your help. I have one more question. At which point in the
flowgraph does usrp_oscope capture and display the data.
Thanks,
Ali
On Mon, Feb 9, 2009 at 9:26 PM, Chris Stankevitz wrote:
> Mir Ali wrote:
> > Can someone tell me how to use usrp_oscope.py and usrp_fft.py? I tried
> > l
On Mon, Feb 9, 2009 at 7:07 PM, Chris Stankevitz wrote:
> I wrote a c++ program that grabs data from the USRP in an infinite loop
> and does nothing with it. It overruns. Can anyone help me figure out why?
Can you try it without the call to set_format()?
Johnathan
__
Bishal Thapa wrote:
Q.1. TX side: I simply want to take a packet and XOR each bit of the
packet with a PN-code (hint: final goal will be to implement a DSSS).
Could you please hint me some pointers as to where catch the packet
before it gets modulated so that I can XOR it with my code? I read
On Mon, Feb 9, 2009 at 4:13 PM, Martin Dvh wrote:
> http://gnuradio.org/trac gives me
>
> Trac detected an internal error:
>db.commit()
> OperationalError: database is locked
We got this on occasion before the upgrade as well. I think there is
a limit to the number of pending locks on the
Eric Blossom wrote:
> Try using oprofile instead.
>
That's what I use. I don't have a problem with the messages, just
trying to help the OP.
Chris
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On Mon, Feb 09, 2009 at 07:29:40PM -0800, Chris Stankevitz wrote:
> On Thu, Oct 11, 2007 at 03:54:56PM -0400, Jared Jensen wrote:
> > Does anyone know why I get "fusb::_reap: Interrupted System Call"
> > frequently? There are no overruns, and my data seems good, but I keep
> > getting this error.
On Mon, Feb 9, 2009 at 6:25 PM, Marcus D. Leech wrote:
> Is there room in the USRP2 for building a 2048 lag autocorrelator with 1
> or 2-bit sampling?
Most likely. I did the investigation to implement a fully pipelined
2048 point FFT with 16-bit I/Q samples using the Xilinx core generator
softw
On Thu, Oct 11, 2007 at 03:54:56PM -0400, Jared Jensen wrote:
> Does anyone know why I get "fusb::_reap: Interrupted System Call"
> frequently? There are no overruns, and my data seems good, but I keep
> getting this error. If it's meaningless, is there a way to suppress
I get this when I run a
Mir Ali wrote:
> Can someone tell me how to use usrp_oscope.py and usrp_fft.py? I tried
> looking for answers on the archive but couldn't find any.
Mir Ali:
Launch the apps just like you would any other program. Just type
"usrp_fft.py" then press enter. Select the frequency you want to look
at
Eric Blossom wrote:
> Which OS are you running on?
> Are you running on a VM?
> Did you build and install the GR code, or did you just extract the
> usrp code and try to build it? In either base, which version are you using?
> Which FUSB method are you using?
>
> Have you build GNU Ra
Hi,
Can someone tell me how to use usrp_oscope.py and usrp_fft.py? I tried
looking for answers on the archive but couldn't find any.
Thanks,
Ali
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On Mon, Feb 09, 2009 at 07:07:56PM -0800, Chris Stankevitz wrote:
> Hi,
>
> I wrote a c++ program that grabs data from the USRP in an infinite loop
> and does nothing with it. It overruns. Can anyone help me figure out why?
>
> This runs on a 2.4GHz computer that isn't doing anything else. I'm
Hi,
I wrote a c++ program that grabs data from the USRP in an infinite loop
and does nothing with it. It overruns. Can anyone help me figure out why?
This runs on a 2.4GHz computer that isn't doing anything else. I'm
sampling the A and B channel of a BasicRX at 4MHz with shorts. CPU runs
abou
On Mon, Feb 09, 2009 at 09:56:43PM -0500, Ben Perry wrote:
> So I am using higher-level interfaces to write to these registers.
> Namely I am concerned with writing to the output enable register for
> RxA. From my understanding of what I have to do I set up my source_c
> and then I am able to write
So I am using higher-level interfaces to write to these registers.
Namely I am concerned with writing to the output enable register for
RxA. From my understanding of what I have to do I set up my source_c
and then I am able to write_oe/io with a value to either 0 for a? and
1 for b?. My code is bel
Is there room in the USRP2 for building a 2048 lag autocorrelator with 1
or 2-bit sampling?
--
Marcus Leech
Principal Investigator, Shirleys Bay Radio Astronomy Consortium
http://www.sbrac.org
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Johnathan Corgan wrote:
> The gnuradio.org site is back up, though we will require another
> period of downtime in the next day or so. Please let us know if you
> find anything out of the ordinary.
>
> We are now running Apache 2.2, Trac 0.10.4, and Subversion 1.4.6, and
> planning a further upgr
Muhammad Abrar wrote:
> Now I run this program n my Laptop on whicg gnuradi 3.0.4-2ubuntu2 is
> installed and i get following message.
>
> muhammadab...@ubuntu:~/Documents/usrp$ python usrp_wfm_rcv_pll.py
gr_fir_ccf: using SSE
gr_fir_fff: using SSE
gr_fir_fcc: using SSE
> audio_als
Thanks everyone,
I will try these out. I am developing a DSSS system on gnuradio and hence
the interest in looking at the output once the signal is spread using a gold
code.
Thanks,
Ali
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Hi,
> On Mon, 2/9/09, Eric Blossom wrote:
>
> For the first part of the question, something about
> reset_db, I think you need to update, build and reinstall the f/w on the
> SDCARD since internally, we now use a new (internal) method to handle
> some things.
>
> Eric
I think my SD revision is
Hi all,
CGRAN will likely be down for several hours today while we work on
assigning it its own IP address and updating its SSL certificate.
- George
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On Sun, Feb 08, 2009 at 10:11:05PM -0800, Firas Abbas wrote:
> Hi,
>
>
> > On Sun, 2/8/09, Johnathan Corgan wrote:
> >
> > Do you get this every time you run usrp2_fft.py? Can you
> > try usrp2_siggen.py or usrp2_rx_cfile.py?
> >
> > Johnathan
>
> Yes, with usrp2_siggen.py or usrp2_rx_cfile.
On Mon, Feb 09, 2009 at 10:50:44AM -0500, Suprin, Charles E. wrote:
> Hello,
>
> I have hooked up the USRP2 to a PPS and a GPSDO 10MHz reference.
>
> Is there a way I can tell if the FPGA is seeing these signals and locking
> onto them?
>
> Charles
Hi Charles,
You have to tell it to use them.
On Mon, Feb 09, 2009 at 01:06:36AM -0500, Ben Perry wrote:
> I am trying to write to an IO register on my FPGA to open the lines of
> communication. Right now I am just using benchmark_tx.py as my test
> case.
>
> In transmit_path.py I added the following
>
> self.u._write_fpga_reg(usrp.FR_OE_1,4
Hello,
I have hooked up the USRP2 to a PPS and a GPSDO 10MHz reference.
Is there a way I can tell if the FPGA is seeing these signals and locking onto
them?
Charles
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Hi,
I was about to write a block which calculates the moving average over a
whole vector, when I stumbled upon the way the current moving average
blocks handle the history.
Here's the code for the float version:
int
gr_moving_average_ff::work (int noutput_items,
gr_vector_const_voi
Hi,
That works. Thanks!
I am getting another problem when running ./configure
FFTW3F is compiled with
./configure --prefix=/opt/freeswitch --enable-core-odbc-support
--enable-core-libedit-support --enable-64 --with-openssl=/usr/sfw
But I am still getting the following error:
No package 'fftw3
On Sun, Feb 08, 2009 at 07:36:28PM -0500, Ran Tian wrote:
> HI,
> Could anyone help me with noise level Estimation using the GNU Radio block
> gr.null_source (float [gr_complex])
> I just want to send a constant zero signal an drecord the output.
> How to write this simple flow graph?
Probably bes
I use GNU-plot http://www.gnuplot.info/ , R http://www.r-project.org/
and some Python scripts to glue em. Works fine for me.
--
- Pauli Rikula
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Hey all,
I want to generate a periodic rectangular pulse(of low duty cycle) from
one USRP and receive it using another USRP operating simultaneously.
So, is there some built in function to generate such a pulse?
Also,what filter do i need to apply before connecting the pulse source
to Usrp sink?
anne kwong wrote:
...
[r...@localhost fftw-3.2]# ./configure --enable-single --enable-shared
--enable-sse
Hi, try to not use the super- user account when configuring, only when
installing. I don't know if it will help, but sometimes the environment
for the root user is a bit different than
Hi,
I am having problem getting fftw-3.2 installed on Centos 5.2 64 bits.
Does that combination work? My PC is Pentinum based and I did use the --sse
option.
I just get started with gnuradio. Any help will be greatly appreciated.
Here is the log:
[r...@localhost fftw-3.2]# ./configure --ena
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