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Re: [Discuss-gnuradio] Assertion Error when running gnuradio examples


From: Matt Ettus
Subject: Re: [Discuss-gnuradio] Assertion Error when running gnuradio examples
Date: Wed, 24 May 2006 12:23:24 -0700

Its checked in, but it won't fix your problem.  It will just make the
error more obvious.

Matt

On Mon, 2006-05-22 at 09:48 -0500, Michael Ford wrote:
> Eric,
> 
> How will I know when the daughterboard code has been updated?
> 
> Also, thanks to you and Thomas for your help so far. I've got the
> coding background for this, but not the DSP background. I'm learning
> as I go, but as you can imagine, I have my struggles understanding.
> *laughs* 
> 
> -Michael Ford-
> 
> 
> On 5/20/06, Eric Blossom <address@hidden> wrote:
>         On Sat, May 20, 2006 at 11:03:03AM -0700, Thomas Schmid wrote:
>         > Hi Michael,
>         >
>         > GNURadio is under active development. Therefore, file names
>         can change
>         > and thus tutorials don't reflect the latest changes until
>         they are 
>         > updated. The two file syou found, std_2rxhb_2tx.rbf and
>         > std_4rx_0tx.rbf, are two different versions for the USRP
>         firmware. the
>         > first one has two rx and to tx paths, the second one has 4
>         rx and no
>         > tx.
>         >
>         > When the oscilloscope run, did you see a change in the LED
>         on your
>         > USRP, i.e., did it first blink fast, and once the
>         oscilloscope was
>         > running it blinked slower? If, then everything is fine. If
>         not, then 
>         > follow the installation instructions here:
>         > http://www.comsec.com/wiki?UsrpInstall
>         > except that I think we are at rev4 for the firmware now,
>         instead of rev2. 
>         >
>         > The exception you get is probably because you have the wrong
>         > daughterboard in your USRP. What is the configuration you
>         are using?
>         >
>         > Cheers,
>         > Thomas
>         
>         Thanks Thomas.  Those are all good suggestions. 
>         
>         Michael,
>         
>         The problem is twofold.
>         
>           (1) You asked the 2.4 GHz daughterboard to attempt to tune
>         to 101.5 Hz
>         
>           > usrp_wfm_rcv_nogui.py -f 101.5  # should really be -f
>         101.5M
>         
>           (2) There's a bug in the daughterboard code, that has it
>         blow up 
>               instead of just cleanly returning a failure code.
>         
>         [Matt, can you please fix this when you return from
>         Dayton?  This problem
>         may exist for all the RFX boards.]
>         
>         Also, the tutorials (like most everything) were written by a 
>         volunteer.  The underlying code base has changed since they
>         were
>         written.  Perhaps Dawei or someone else can update them if
>         they get a
>         chance.
>         
>         Eric
> 
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> Discuss-gnuradio mailing list
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> http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
-- 
Matt Ettus <address@hidden>





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