On 22/07/12 10:54 PM, David Brush wrote: > Hello, > > I am trying to get GNU Radio up and running, I am am experiencing an > error that I haven't been able to fix. It seems that uhd cannot find > my EzTV 668 usb dongle. rtl_test, however, lists it correctly. When I > try to run uhd_fft, I get a traceback and an error that says "No > device found for ----> Empty device address." I used the most recent > version of build-gnuradio to install all of the components, and have > an up to date Ubuntu 12.04 x86_64 distribution. I have also made sure > that udev was configured > per > http://files.ettus.com/uhd_docs/manual/html/transport.html#usb-transport-libusb. > I have attached the outputs I get from lsusb, rtl_test, uhd_fft, and > uhd_find_devices. Please help! > > I can provide additional info as needed. > > Thank you! > -David > > $ lsusb > Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub > Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub > Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub > Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub > Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub > Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub > Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub > Bus 008 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub > Bus 001 Device 003: ID 0bda:0158 Realtek Semiconductor Corp. USB 2.0 > multicard reader > Bus 001 Device 004: ID 05ca:180a Ricoh Co., Ltd > Bus 003 Device 007: ID 413c:8160 Dell Computer Corp. Wireless 365 > Bluetooth > Bus 003 Device 002: ID 0a5c:4500 Broadcom Corp. BCM2046B1 USB 2.0 Hub > (part of BCM2046 Bluetooth) > Bus 003 Device 003: ID 413c:8161 Dell Computer Corp. Integrated Keyboard > Bus 003 Device 004: ID 413c:8162 Dell Computer Corp. Integrated > Touchpad [Synaptics] > Bus 002 Device 008: ID 0bda:2838 Realtek Semiconductor Corp. > $ > $ > $ > $ rtl_test > Found 1 device(s): > 0: ezcap USB 2.0 DVB-T/DAB/FM dongle > > Using device 0: ezcap USB 2.0 DVB-T/DAB/FM dongle > Found Elonics E4000 tuner > Supported gain values (18): -1.0 1.5 4.0 6.5 9.0 11.5 14.0 16.5 19.0 > 21.5 24.0 29.0 34.0 42.0 43.0 45.0 47.0 49.0 > Reading samples in async mode... > ^CSignal caught, exiting! > > User cancel, exiting... > $ uhd_find_devices > linux; GNU C++ version 4.6.3; Boost_104601; UHD_003.004.002-181-g25649781 > > No UHD Devices Found > $ uhd_fft > linux; GNU C++ version 4.6.3; Boost_104601; UHD_003.004.002-181-g25649781 > > Traceback (most recent call last): > File "/usr/local/bin/uhd_fft", line 337, in <module> > main () > File "/usr/local/bin/uhd_fft", line 333, in main > app = stdgui2.stdapp(app_top_block, "UHD FFT", nstatus=1) > File > "/usr/local/lib/python2.7/dist-packages/gnuradio/wxgui/stdgui2.py", > line 38, in __init__ > wx.App.__init__ (self, redirect=False) > File > "/usr/lib/python2.7/dist-packages/wx-2.8-gtk2-unicode/wx/_core.py", > line 7981, in __init__ > self._BootstrapApp() > File > "/usr/lib/python2.7/dist-packages/wx-2.8-gtk2-unicode/wx/_core.py", > line 7555, in _BootstrapApp > return _core_.PyApp__BootstrapApp(*args, **kwargs) > File > "/usr/local/lib/python2.7/dist-packages/gnuradio/wxgui/stdgui2.py", > line 42, in OnInit > self._max_noutput_items) > File > "/usr/local/lib/python2.7/dist-packages/gnuradio/wxgui/stdgui2.py", > line 64, in __init__ > self.panel = stdpanel (self, self, top_block_maker, max_nouts) > File > "/usr/local/lib/python2.7/dist-packages/gnuradio/wxgui/stdgui2.py", > line 86, in __init__ > self.top_block = top_block_maker (frame, self, vbox, sys.argv) > File "/usr/local/bin/uhd_fft", line 91, in __init__ > otw_format=options.wire_format, args=options.stream_args)) > File > "/usr/local/lib/python2.7/dist-packages/gnuradio/uhd/__init__.py", > line 116, in constructor_interceptor > return old_constructor(*args) > File > "/usr/local/lib/python2.7/dist-packages/gnuradio/uhd/uhd_swig.py", > line 2726, in usrp_source > return _uhd_swig.usrp_source(*args) > RuntimeError: LookupError: KeyError: No devices found for -----> > Empty Device Address > $ > > Thanks again! > > > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > UHD devices are those manufactured by Ettus Research (the USRP family), and have *nothing* to do with RTLSDR dongles at all.
build-gnuradio installs both gr-osmosdr, and rtl-sdr components, and I think they include a simple test app, other than rtl_test--osmosdr_source_1rtl.grc appears to be a simple test app for gr-osmosdr-type devices, including RTLSDR devices. Now, confusingly enough, the gr-osmosdr *source* object for Gnu Radio acts a kind of quasi-universal abstraction layer for SDR-like hardware, so you can use that source for RTLSDR, OSMOSDR, FunCube, and UHD-type devices. Until the (very recent) advent of gr-osmosdr, there wasn't any hardware-independant device abstraction for Gnu Radio, although UHD provides a universal abstraction for USRP devices, there was nothing that was cross-manufacturer. With gr-osmosdr, you can write an RX flow-graph that doesn't really "know" very much about the hardware involved. -- Principal Investigator Shirleys Bay Radio Astronomy Consortium http://www.sbrac.org
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