On 13/09/11 02:54 AM, Dmitry Shatskiy wrote: > > Thanks for your reply Josh, > > > > So the instructions are: > > (1) Use the script > > OR > > (2) - run "git clone http://gnuradio.org/git/gnuradio.git";;, > > - Follow the Gnuradio build guide: > > http://gnuradio.org/redmine/projects/gnuradio/wiki/BuildGuide, > > - check the dependencies and make sure that gr-uhd is enabled in > > the Gnuradio source tree. > > > > I'm positive I did (1) on one of our systems and (2) on another one. > > To the letter. Neither of them work. > > > > I believe the libusrp1-gnuradio driver was installed along with the > > gr-uhd one. > > Is there a way to figure out which library is being used by UHD? > > Is there a way to specifically tell UHD which source and sink blocks > > should be used? > > > > Thank you, > > Dmitry Shatskiy. > > > You're not understanding. If you use the "classic" API, rather than > UHD, you won't be able to > correctly deal with a TVRX2, since that card is supported *ONLY* with > the UHD API. Many of > the example programs, such as usrp_usb_benchmark.py, use the so-called > "classic" API. They > haven't been updated. It doesn't matter how up-to-date your UHD > installation is, the "classic APIed" > programs have no knowledge at all of UHD or any of the post-UHD > hardware that's out there. > > If you want to check gross functionality of your TVRX2 card, you can use > "uhd_fft.py" to grab an > FFT spectrum off the card, and make sure that it's working. > > If you want to produce your own flow-graphs, you'll have to use the "UHD > source" within GRC. > The "classic" USRP1 source won't work with the TVRX2 card, because > that card was released > *after* the classic API was deprecated and no longer being updated. > > If you have an up-to-date Ubuntu system, then the 'build-gnuradio' > script should take care of installing > and building everything you need to make UHD-api "stuff" just work. > Including within > gnuradio-companion, "uhd_fft.py", etc. But none of the "classic" API > examples will work with > TVRX2, or indeed many of the other post-UHD cards out there. Since > you're a new user, you have > no massive reams of code that need to maintain compatibility with the > "old ways", so start learning > and using UHD. > > *********************************************************************************** > > Thanks for your reply Marcus and thank you for all the work you guys > do to keep this project going. > > As far as I've understood the problem is that old codes use so to say > old sets of instructions disregarding changes in the hardware. > What is the best way to start learning UHD? So far trying to run > uhd_fft.py I'm getting an error (there's more to that, it's just some > last few lines): > > / File > "/usr/local/lib/python2.7/dist-packages/gnuradio/uhd/uhd_swig.py", > line 1856, in usrp_source > return _uhd_swig.usrp_source(*args, **kwargs) > RuntimeError: LookupError: KeyError: No devices found for -----> > Device Address: > addr: 192.168.10.2/ > > Thanks, > Dmitry Shatskiy./ > / > The default device address in uhd_fft.py is for a USRP2/N210. Try using the --address="type=usrp1" option. Other options, use "uhd_fft.py --help".
-- Principal Investigator Shirleys Bay Radio Astronomy Consortium http://www.sbrac.org
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