Follow the instructions in section "Setup Udev for USB (Linux)" at the following URL for you to be able to access your USRP1 with non-root permissions:
http://files.ettus.com/uhd_docs/manual/html/transport.html#setup-udev-for-usb-linux An easy way to locate the 'uhd-usrp.rules' file is to run the following: sudo find / -name uhd-usrp.rules Mike -- Mike Jameson M0MIK BSc MIET Ettus Research Technical Support Email: [email protected] Web: http://ettus.com On Sat, Jun 28, 2014 at 5:39 AM, Nguyễn Văn Lý <[email protected]> wrote: > Dear all, > > *I am new to gnuradio. I am trying to run an experiment, but I got an > error as follows:* > > UHD Error: > USB open failed: insufficient permissions. > See the application notes for your device. > Traceback (most recent call last): > File "/home/van-ly/GNU_Radio/SDR Implementation of OFDM-based Network > Coding_Project Codes and Files/ofdm_transmitter.py", line 198, in <module> > tb = ofdm_transmitter() > File "/home/van-ly/GNU_Radio/SDR Implementation of OFDM-based Network > Coding_Project Codes and Files/ofdm_transmitter.py", line 67, in __init__ > channels=range(1), > File "/usr/local/lib/python2.7/dist-packages/gnuradio/uhd/__init__.py", > line 121, in constructor_interceptor > return old_constructor(*args) > File "/usr/local/lib/python2.7/dist-packages/gnuradio/uhd/uhd_swig.py", > line 2208, in make > return _uhd_swig.usrp_sink_make(*args) > RuntimeError: LookupError: KeyError: No devices found for -----> > Empty Device Address > > *Then I tried a command (sudo uhd_usrp_probe) to test the UHD installation > and I got * > > linux; GNU C++ version 4.8.1; Boost_104800; UHD_003.005.004-0-unknown > > -- Loading firmware image: /usr/local/share/uhd/images/usrp1_fw.ihx... done > -- Opening a USRP1 device... > -- Loading FPGA image: /usr/local/share/uhd/images/usrp1_fpga.rbf... done > -- Using FPGA clock rate of 64.000000MHz... > _____________________________________________________ > / > | Device: USRP1 Device > | _____________________________________________________ > | / > | | Mboard: USRP1 > | | serial: 6R2706U1 > | | > | | Time sources: none > | | Clock sources: internal > | | Sensors: > | | _____________________________________________________ > | | / > | | | RX DSP: 0 > | | | Freq range: -32.000 to 32.000 Mhz > | | _____________________________________________________ > | | / > | | | RX DSP: 1 > | | | Freq range: -32.000 to 32.000 Mhz > | | _____________________________________________________ > | | / > | | | RX Dboard: A > | | | _____________________________________________________ > | | | / > | | | | RX Frontend: 0 > | | | | Name: Unknown (0xffff) - 0 > | | | | Antennas: > | | | | Sensors: > | | | | Freq range: 0.000 to 0.000 Mhz > | | | | Gain Elements: None > | | | | Connection Type: IQ > | | | | Uses LO offset: No > | | | _____________________________________________________ > | | | / > | | | | RX Codec: A > | | | | Name: ad9522 > | | | | Gain range pga: 0.0 to 20.0 step 1.0 dB > | | _____________________________________________________ > | | / > | | | RX Dboard: B > | | | ID: RFX2400 (0x0027) > | | | Serial: E5R12YBR2 > | | | _____________________________________________________ > | | | / > | | | | RX Frontend: 0 > | | | | Name: RFX2400 RX > | | | | Antennas: TX/RX, RX2, CAL > | | | | Sensors: lo_locked > | | | | Freq range: 2300.000 to 2900.000 Mhz > | | | | Gain range PGA0: 0.0 to 70.0 step 0.0 dB > | | | | Connection Type: QI > | | | | Uses LO offset: No > | | | _____________________________________________________ > | | | / > | | | | RX Codec: B > | | | | Name: ad9522 > | | | | Gain range pga: 0.0 to 20.0 step 1.0 dB > | | _____________________________________________________ > | | / > | | | TX DSP: 0 > | | | Freq range: -44.000 to 44.000 Mhz > | | _____________________________________________________ > | | / > | | | TX DSP: 1 > | | | Freq range: -44.000 to 44.000 Mhz > | | _____________________________________________________ > | | / > | | | TX Dboard: A > | | | _____________________________________________________ > | | | / > | | | | TX Frontend: 0 > | | | | Name: Unknown (0xffff) - 0 > | | | | Antennas: > | | | | Sensors: > | | | | Freq range: 0.000 to 0.000 Mhz > | | | | Gain Elements: None > | | | | Connection Type: IQ > | | | | Uses LO offset: No > | | | _____________________________________________________ > | | | / > | | | | TX Codec: A > | | | | Name: ad9522 > | | | | Gain range pga: -20.0 to 0.0 step 0.1 dB > | | _____________________________________________________ > | | / > | | | TX Dboard: B > | | | ID: RFX2400 (0x002b) > | | | Serial: E5R12YBR2 > | | | _____________________________________________________ > | | | / > | | | | TX Frontend: 0 > | | | | Name: RFX2400 TX > | | | | Antennas: TX/RX, CAL > | | | | Sensors: lo_locked > | | | | Freq range: 2300.000 to 2900.000 Mhz > | | | | Gain Elements: None > | | | | Connection Type: IQ > | | | | Uses LO offset: Yes > | | | _____________________________________________________ > | | | / > | | | | TX Codec: B > | | | | Name: ad9522 > | | | | Gain range pga: -20.0 to 0.0 step 0.1 dB > > Can anyone tell me why so? and help me how to fix this error. > Thanks in advance > Van-Ly > Nguyen Van-Ly, > Vietnam National University, Hanoi - VNU > University of Engineering and Technology - UET > Faculty of Electronics and Telecommunications - FET > > Tel: +84 978 819 406 > > Standing on my own two feet !!! > > _______________________________________________ > Discuss-gnuradio mailing list > [email protected] > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > >
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