Re: [Discuss-gnuradio] Using gr_uhd on Windows

[Josh Blum]

On 01/01/2013 09:53 PM, Luong Tan Phong wrote:
> Hi List,
> 
> Happy new year for everyone.
> 
> I've install gnuradio v3.6.3rc and uhd v3.5.0 on Win7 64 bit. I get error:
> gri_fftw: gri_fftw: gr_pagesize: no info; setting pagesize = 4096
> 

You can ignore this warning above

> thread[thread-per-block[0]: <gr_block gr uhd usrp source (1)>]: ValueError:
> bad vrt header or packet fragment
> whenever I call gr_top_block.lock()/unlock(), stop()/start() functions.
> Could you help me, please?

What device/model are you using? That way I can try to replicate the
issue. Those methods above all cause streamers to be created/destroyed.
So there may be an issue w/ cleanup or init.

Also..
Are you using lock()/unlock(), stop()/start() to dynamically reconfigure
the flow graph at runtime? If that is the case, you may have better luck
with the stream selector in grextras which can re-route streams on the fly:

https://github.com/guruofquality/grextras/wiki#wiki-list-of-blocks-in-this-project

-josh

> 
> Thanks so much.
> 
> LTP.
> 
> 
> 
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