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Re: [Discuss-gnuradio] GNURadio on Windows
From: |
Robert Roberts |
Subject: |
Re: [Discuss-gnuradio] GNURadio on Windows |
Date: |
Mon, 06 Feb 2006 20:19:14 -0500 |
----- Original Message -----
From: Martin Dvh <address@hidden>
Date: Sunday, February 5, 2006 3:12 pm
Subject: Re: [Discuss-gnuradio] GNURadio on Windows
> Stephane Fillod wrote:
> > Hi Chris,
> >
> > On Sat, Feb 04, 2006 at 03:26:29PM -0500, Robert Roberts wrote:
> >
> >>Is there anyone out there working with GNURadio on Windows with
> the USRP?
> >
> >
> > Disclaimer: I'm not using the USRP on Windows, just lending a
> hand in
> > porting the code. Among the lurker on the list, are there any
> > Windows gurus who can help better, starting with, for example,
> > beta-testing the Windows Installer Martin kindly released?
> > Rem: no need to own an USRP to try out GNU Radio on Windows.
> >
> >
> >>The current install files from Martin have one issue with the way
> that I
> >>install them. When I attempt to run any of the USRP code it
> looks for
> >>the usrp_prims.dll in the C:\Python24\site-packages directory. The
> >>installer places that file in C:\Program Files\USRP\bin Copying
> the>>file fixes this.
> The installer should have automatically put C:\Program
> Files\USRP\bin on your PATH.
> I will check, maybe I overlooked something.
> Maybe I should just put usrp_prims.dll in C:\Python24\site-
> packages. It is a python related and URP related file.
Your installer appears to add the Usrp directory in the path correctly,
I've also tried adding the path by hand and I get the same error (on
multiple machines), my only solution has been to place the
usrp_prims.dll in the site-packages folder.
Also, once we get some stability would you mind if I created a CD iso
image of everything needed? This way there can be a one stop shop to
install GNURadio on Windows boxes. :-)
> >
> >
> > Was the C:\Program Files\USRP\bin directory in your PATH?
> >
> >
> >>The audio is very choppy with the WFM_RCV example. I found that
> going>>into the Task Manager and setting Pythons priority to "real
> time" fixes
> >>this better. Are there any other tweaks out there?
>
>
> >
> >
> > Perhaps not enough buffering? Having source/sink in threads helps
> sometimes.> Martin will have better insight on the topic.
> The code needs fixing but I haven't spend much time on optimizing
> it yet.
> I think it does has something to do with threads. Maybe another
> buffer layer or number of buffers (pingpong) will fix it.
> Put the windows_audio sink in another thread will probably help,
> but I don't know howto.
>
> I just copied the ideas for the windows_audio driver from other
> GPL'ed windows audio projects.
>
> The windows_audio driver also needs an audio_source implementation.
>
> An other solution would be to implement a direct_audio driver
> (directX audio) in stead of fixing this.
> I suspect you would have much less synchronisation issues.
>
> A quick-and-dirty solution test would indeed be to increase the
> audio-buffer.
> (You need to build from source to test this)
>
> An even more quick and dirty test is to change the default value
> for all buffers between blocks.
> (Can be done after install)
> change the value for self.fixed_buffer_size in C:\Python24\site-
> packages\gnuradio\flow_graph.pyline50:
> self.fixed_buffer_size = 32*1024
> Change this to a higher/lower value and see what it does for you.
> The default is 32*1024 which means 32 kByte
> Note that this value is for ALL blocks, so you might break things
> when you make it too low and slow things down when you make it too
> high.
>
> greetings,
> Martin
>
>
- [Discuss-gnuradio] GNURadio on Windows, Robert Roberts, 2006/02/04
- Re: [Discuss-gnuradio] GNURadio on Windows, Stephane Fillod, 2006/02/04
- Re: [Discuss-gnuradio] GNURadio on Windows, Martin Dvh, 2006/02/05
- Re: [Discuss-gnuradio] GNURadio on Windows, Eric Blossom, 2006/02/05
- Re: [Discuss-gnuradio] GNURadio on Windows, Berndt Josef Wulf, 2006/02/05
- Re: [Discuss-gnuradio] GNURadio on Windows, Robert McGwier, 2006/02/05
- Re: [Discuss-gnuradio] GNURadio on Windows, Berndt Josef Wulf, 2006/02/05
- Re: [Discuss-gnuradio] GNURadio on Windows, Robert McGwier, 2006/02/05
- Re: [Discuss-gnuradio] GNURadio on Windows, Eric Blossom, 2006/02/05
- Re: [Discuss-gnuradio] GNURadio on Windows, Robert McGwier, 2006/02/05
- Re: [Discuss-gnuradio] GNURadio on Windows,
Robert Roberts <=