[Discuss-gnuradio] OFDM Benchmark- runtime error

[Sarang Mandke]

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
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