Re: [Discuss-gnuradio] OFDM Benchmark- runtime error

[Eric Blossom]

On Mon, Oct 01, 2007 at 10:33:25PM +0200, Sarang Mandke wrote:
> Hello to all the experts!
> I am doing a mini project on GNU Radio using OFDM. Somehow I am getting
> runtime errors when i try to run the benchmark scripts .
> 
> The message i get when trying to run benchmark_ofdm_tx.py is
> 
> address@hidden:~/gnuradio/gnuradio-examples/python/ofdm$
> ./benchmark_ofdm_tx.py -f2.4e9 -i200 --tx-ampl=200
> usrp_open_interface:usb_claim_interface: failed interface 1
> could not claim interface 1: Device or resource busy
> usrp_basic_tx: can't open tx interface
> Traceback (most recent call last):
>   File "./benchmark_ofdm_tx.py", line 217, in <module>
>     main()
>   File "./benchmark_ofdm_tx.py", line 190, in main
>     fg = usrp_graph(options)
>   File "./benchmark_ofdm_tx.py", line 51, in __init__
>     self._setup_usrp_sink()
>   File "./benchmark_ofdm_tx.py", line 66, in _setup_usrp_sink
>     fusb_nblocks=self._fusb_nblocks)
>   File "/usr/local/lib/python2.5/site-packages/gnuradio/usrp.py", line
> 212, in __init__
>     fpga_filename, firmware_filename)
>   File "/usr/local/lib/python2.5/site-packages/gnuradio/usrp1.py", line
> 710, in sink_c
>     return _usrp1.sink_c(*args)
> RuntimeError: can't open usrp1
> 
> 
> Can anyone suggest some solution to this problem. The USRP board is
> running fine since we tested the oscilloscope script on it

Is the o'scope running at the same time?
Note the message about "Device or resource busy"

Eric