[Discuss-gnuradio] connect USRP-2921 to gnuradio

[mohamid92]

hello 

i tried to implement FM reciever from this video :
https://www.youtube.com/watch?v=KWeY2yqwVA0

but the problem is that everytime i need to run the grc an error show which
is:

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linux; GNU C++ version 4.8.2; Boost_105400; UHD_003.005.005-0-unknown

Using Volk machine: avx_64_mmx_orc
Traceback (most recent call last):
  File "/home/mohamed/GNURADIO exercise/top_block.py", line 157, in <module>
    tb = top_block()
  File "/home/mohamed/GNURADIO exercise/top_block.py", line 92, in __init__
    channels=range(1),
  File "/usr/lib/python2.7/dist-packages/gnuradio/uhd/__init__.py", line
122, in constructor_interceptor
    return old_constructor(*args)
  File "/usr/lib/python2.7/dist-packages/gnuradio/uhd/uhd_swig.py", line
1737, in make
    return _uhd_swig.usrp_source_make(*args)
RuntimeError: LookupError: KeyError: No devices found for ----->
Empty Device Address

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