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Re: [Discuss-gnuradio] Controlling USRP From Inside General Gnuradio Blo


From: Eric Blossom
Subject: Re: [Discuss-gnuradio] Controlling USRP From Inside General Gnuradio Block
Date: Wed, 12 Dec 2007 14:11:23 -0800
User-agent: Mutt/1.5.17 (2007-11-01)

On Wed, Dec 12, 2007 at 12:08:24PM -0800, Firas A. wrote:
> 
> What I'm trying to do, is to control the usrp directly from inside a general
> gnuradio block. The reason  for this is that in usrp_spectrum_sense.py, the
> call from inside bin_statistics block (C++) to the tune function (python)
> takes so much time for each center frequency change.

Are you sure the delay you're seeing isn't caused by the tune_delay
and dwell_delay parameters of the gr_bin_statistics block?  The
overhead of getting to and from python is almost certainly less than
the settling time of the front end.

Eric




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