On Wed, Mar 22, 2006 at 10:51:19AM -0800, jjw wrote:
>
> Has anybody had any experience using the capture_to_file.py code from KD7LMO?
> (http://kd7lmo.net/ground_gnuradio_software.html) I am interested in the
> functionality to set up an IF frequency and bandwidth and dump the data to a
> file. When I have attempted to run the program I have encountered the
> following error....
>
> [EMAIL PROTECTED] ~]$ ./capture_to_file.py narrowband_256k_complex.dat
> 10.7 250 30
> Capturing 7680000 samples
> Traceback (most recent call last):
> File "./capture_to_file.py", line 67, in ?
> main (sys.argv[1:])
> File "./capture_to_file.py", line 63, in main
> fg = build_graph (filename, IF_freq_hz, decim_rate, samples)
> File "./capture_to_file.py", line 38, in build_graph
> src = usrp.source_c (0, decim, 1, mux)
> File "/home/jjw27370/gr/lib/python2.4/site-packages/gnuradio/usrp.py",
> line 242, in __init__
> fpga_filename, firmware_filename)
> File "/home/jjw27370/gr/lib/python2.4/site-packages/gnuradio/usrp1.py",
> line 1208, in source_c
> return _usrp1.source_c(*args)
> TypeError: in method 'source_c', argument 4 of type 'int'
>
>
> It seems there is something wrong with the way that mux is declared in the
> capture_to_file.py code (0xf0f0f0f0). According to Dawai Shen's tutorial on
> USRP (http://www.nd.edu/~dshen/GNU/Tutorial/4.html) 0xf0f0f0f0 should be a
> valid combination to use. Maybe I am missing some trivial detail or maybe
> this code was designed for an older version of GNU Radio, but if anybody
> could shed some light on this issue or maybe knows of a better program for
> capturing data to a file, it would be helpful.
>
> Thanks,
> John
May I suggest you try gnuradio-examples/python/usrp/usrp_rx_cfile.py?
It handles all daughterboards, and basically just "does the right thing".
Eric
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