RE: [Discuss-gnuradio] First-timer Question

[Cameron Moore]

Hi

I will be trying to connect a usrp to a virtual machine this weekend, I
will let you know what happened.
I do know from previous experience that the usrp can send data at a
higher data rate than a virtual machine can handle, so there is a lot of
over run errors.
I only use vm's for testing.
By the way we should communicate via the discussion list, as other
people may be interested in what we are talking about.

Cameron 
On Thu, 22 May 2008 22:54:31 +0000, "Mr. mollasadra"
<address@hidden> said:
> Thanks for the response.
> I tried what you said on a VMware setup and as you said it worked, which
> led me to think that my machine is at fault (probably something wrong
> with the sound card, onto another machine).
> Now that I have that sorted out, I wanted to connect the USRP broad and
> run an example program on it (for example the wide FM GUI).
> As I said in my previous post the only information I could find was on
> archive.com (a page which seems like it doesn't exist anymore).
> Lets say right after the installation of the gnuradio-examples I plug in
> the USRP, what steps do I need to take in order to have a working
> example?
> Do you think that old page is complete enough for a walk through?
> 
> Again I really appreciate your help, I'm a undergrad student who's been
> assigned to figure this thing by himself (as you know the USRP boards and
> the GNURadio don't come with a manual per say, and there aren't that many
> howtos online).
> 
> 
> 
> > From: address@hidden
> > To: address@hidden; address@hidden
> > Subject: Re: [Discuss-gnuradio] First-timer Question
> > Date: Wed, 21 May 2008 23:28:54 +0000
> > 
> > Hi
> > I have just installed gnuradio onto Fredora 8.
> > I installed Fedora 8.
> > Connected to the internet.
> > Let Fedora do its automatic updates.
> > I then ran the following command
> > 
> > yum install gnuradio
> > 
> > There were about 10 dependent packages that needed to be installed.
> > 
> > Once all the downloads were finished I had gnuradio installed.
> > 
> > The gnuradio examples were in a separate package.
> > 
> > From memory I think the command to install it was
> > 
> > yum install gnuradio-examples.
> > 
> > Notes on my install
> > 
> > I was running Fedora 8 as a virtual machine in VMware.
> > I also installed GnuRadio Companion (grc) well worth while.
> > The install was done without a usrp connected.
> > 
> > Hope this helps
> > Cameron
> > On Wed, 21 May 2008 21:00:22 +0000, "Mr. mollasadra"
> > <address@hidden> said:
> > > Since my last question (which was on installing GNU Radio on VM-ware) I
> > > have abandoned that approach and now am trying it out on an actual
> > > machine.
> > > I apologize in advance if this question seems too long, I'm just going to
> > > walk through everything I did to get to where I am now
> > > (so in the process it might even turn out to be a resource for other
> > > first-timers who are having problems)
> > > I'm using fedora 8 (and through out this the USRP board is not plugged
> > > in).
> > > 
> > > So after going through a brand new Fedora 8 installation, to get a
> > > working GNU Radio I first did this:
> > > $ yum isntall gnuradio
> > > 
> > > since I wasn't sure what exactly had happened, I kind of disregarded it
> > > and continued with this path:
> > > 
> > > did this:
> > > $ yum install sdcc
> > > 
> > > then did these:
> > > $ yum groupinstall "Engineering and Scientific" "Development Tools"
> > > $ yum install fftw-devel cppunit-devel wxPython-devel libusb-devel guile
> > > boost-devel alsa-lib-devel numpy
> > > 
> > > 
> > > then added these two manually to "/home/[user]/.bashrc":
> > > 
> > > PYTHONPATH=/usr/local/lib/python2.4/site-packages
> > > PATH=/usr/libexec/sdcc:$PATH
> > > 
> > > 
> > > then  I restart the computer for the changes to take effect
> > > then I finish it off by doing theses:
> > > 
> > > $ svn co http://gnuradio.org/svn/gnuradio/branches/releases/3.1 gnuradio
> > > $ cd gnuradio
> > > $ ./bootstrap
> > > $ ./configure
> > > $ make
> > > $ make check
> > > $ sudo make install
> > > 
> > > 
> > > all the installation worked as it should.
> > > BTW: after the ./configure I get this (which seems normal):
> > > 
> > > The following components were skipped either because you asked not
> > > to build them or they didn't pass configuration checks:
> > > 
> > > gr-audio-jack
> > > gr-audio-osx
> > > gr-audio-portaudio
> > > gr-audio-windows
> > > gr-comedi
> > > 
> > > 
> > > 
> > > Now for a test I ran this:
> > > $ cd /gnuradio-examples/python/audio/
> > > $ python dial_tone.py
> > > 
> > > 
> > > 
> > > 
> > > Which gives me this error:
> > > 
> > >     audio_alsa_sink[hw:0,0]: set_period_time_near failed: Invalid
> > >     argument
> > >     Traceback (most recent call last):
> > >       File "dial_tone.py", line 55, in <module>
> > >         my_top_block().run()
> > >       File "dial_tone.py", line 48, in __init__
> > >         dst = audio.sink (sample_rate, options.audio_output)
> > >       File "/usr/lib/python2.5/site-packages/gnuradio/audio_alsa.py",
> > >       line 236, in sink
> > >         return _audio_alsa.sink(*args)
> > >     RuntimeError: audio_alsa_sink
> > > 
> > > 
> > > 
> > > I had seen this error before and the cause of it (as I had found on
> > > theses forums) was another program (youtube's video player in browser)
> > > using up the sound device. so by closing down FireFox it worked, but now
> > > it makes no difference. I know my sound device works (as I was able to
> > > play a song fine)
> > > but I'm getting really frustrated (due to the non-ending steps just to
> > > get GNU Radio running and to some degree my lack of fully understanding
> > > the linux architecture). Any help would be appreciated.
> > > 
> > > My next question would be (if I managed to somehow resolve the prev.
> > > problem) to actually hook up the USRP to the machine, what steps do I
> > > have to take to ensure the software can communicate with the hardware? I
> > > found this page:
> > > http://web.archive.org/web/20061031031439/comsec.com/wiki?UsrpInstall
> > > 
> > > but does this page still exist somewhere on this website (hopefully with
> > > updated info.) or if it does not, why not?
> > > 
> > > Thanks you all.
> > > 
> > > _________________________________________________________________
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