Hello Alejandra, please set up the USB udev triggers so that non-root users can have access to the device. Follow the instructions that can be found in our manual [1].
Remember to unplug and plug your device after you have followed the required steps. Regards, -Nicolas [1] https://files.ettus.com/manual/page_transport.html#transport_usb_udev On Wed, Jun 6, 2018 at 8:46 PM, oscar llerena <[email protected]> wrote: > hi Ale, > Is it your first attempt with gnuradio? Did you install uhd as root or as > a normal user? Maybe you need to open gnuradio as root. > > El mié., 6 de jun. de 2018 1:28 PM, Mercado, Alejandra < > [email protected]> escribió: > >> Dear all, >> >> I am attempting to recreate the FM receiver in GnuRadio described in >> wiki: >> https://kb.ettus.com/Implementation_of_a_Simple_FM_Receiver_in_GNU_Radio >> >> ... duly replacing all WX with QT... >> >> It seems a simple enough example, as seen here: >> >> >> And I see no errors in making the Python code. But when I attempt to I >> get this error: >> >> Executing: '/usr/bin/python2 -u /home/mercado/workarea- >> gnuradio/gnuradio/ENTS622/Lab_2_FM_RX.py' >> >> linux; GNU C++ version 5.4.0 20160609; Boost_105800; >> UHD_003.009.007-0-g50839059 >> >> >> UHD Error: >> USB open failed: insufficient permissions. >> See the application notes for your device. >> Traceback (most recent call last): >> File "/home/mercado/workarea-gnuradio/gnuradio/ENTS622/Lab_2_FM_RX.py", >> line 250, in <module> >> main() >> File "/home/mercado/workarea-gnuradio/gnuradio/ENTS622/Lab_2_FM_RX.py", >> line 238, in main >> tb = top_block_cls() >> File "/home/mercado/workarea-gnuradio/gnuradio/ENTS622/Lab_2_FM_RX.py", >> line 80, in __init__ >> channels=range(1), >> File "/usr/local/lib/python2.7/dist-packages/gnuradio/uhd/__init__.py", >> line 122, in constructor_interceptor >> return old_constructor(*args) >> File "/usr/local/lib/python2.7/dist-packages/gnuradio/uhd/uhd_swig.py", >> line 2671, in make >> return _uhd_swig.usrp_source_make(*args) >> RuntimeError: LookupError: KeyError: No devices found for -----> >> Empty Device Address >> >> >>> Done >> >> Any suggestions? >> _______________________________________________ >> Discuss-gnuradio mailing list >> [email protected] >> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >> > > _______________________________________________ > Discuss-gnuradio mailing list > [email protected] > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > >
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