Re: [Discuss-gnuradio] using the USRP cpp interface

[Eric Blossom]

On Mon, Jul 13, 2009 at 08:33:13PM -0400, Timur Alperovich wrote:
> Hi there,
> 
> I tried recording the GSM broadacast data using the
> test_usrp_standard_rx code, but plotting it in Matlab does not look
> right at all. The exact command I used was: ./test_usrp_standard_rx -F
> 1976200000 -o /home/timur/GSM/openbts/Transceiver/output4.cfile -D 118
> -v -M 20. I also made a recording from the same base station using
> usrp_rx_cfile.py, with the same decimation. Here are the results,
> plotted in Matlab:
> http://www.eecs.umich.edu/~timuralp/usrp_rx_cfile.jpg and
> http://www.eecs.umich.edu/~timuralp/test_usrp.jpg
> 
> I'm really not sure why the test_usrp_standard_rx output looks as it
> does. What other processing happens in usrp_rx_cfile.py after reading
> data from the USRP? What could I be missing here?
> 
> Thank you.
> 
> -- 
> Cheers,
> Timur

That code doesn't know how to talk to daughterboards.

Please try using usrp_rx_cfile.py

Use the --help option to get the command line parameters.

Eric