Re: [Discuss-gnuradio] Cannot find an item size

[Marcus D. Leech]

On 04/14/2014 05:50 PM, madengr wrote:
> Try taking out the throttle.  That's only needed to limit the CPU when there
> is no hardware dictating the sample rate.
> Lou
> KD4HSO
That's good advice in general.

But in this case, it seems the very-latest UHD doesn't quite "mesh" 
properly with Gnu Radio, and if
  you set the "wire format" in a UHD source/sink to "Automatic" you get 
this error.  Unfortunately,
  "Automatic" is the default, but as a workaround, you can set the wire 
format to "Complex int16".


> embob wrote
> > Ive got an USRP B100 which Im trying to get transmitting as a first step.
> > Ive built the latest GNU Radio from source (using the buildgnuradio script
> > from sbrac.org).
> >
> > Ive setup a flow diagram (see image) which modulates a cosine and outputs
> > it to the USRP Sink.
> >
> > Without the USRP block, the script works fine and I see the FFT Sink
> > moving. With the USRP Sink, I get the
> > error:
> >
> > Ive had this error before in the day when I was first getting started but
> > it told me the size of the type mismatch. This time theres less to go on.
> >
> > Can anyone point me in the right direction of finding out why its
> > happening?
>
>
>
>
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--
Marcus Leech
Principal Investigator
Shirleys Bay Radio Astronomy Consortium
http://www.sbrac.org