On 12/09/11 11:28 PM, Dmitry Shatskiy wrote: > > Hi, > > > > We're using two older USRP boards: > > 1) Rev. 4.5, Ser. #3542, > > 2) Rev. 3, Ser. #290 with a clocking scheme modified according to the > > http://gnuradio.org/redmine/projects/gnuradio/wiki/USRPSerialBelow500 . > > > > We're also using a BasicRX daughterboard with both of these > motherboards and > > have no problems receiving 150 MHz signals using our code. > > > > We were planning to use the newer TVRX2 receivers for the 400 MHz > signals > > so we purchased a couple of TVRX2 Rev. 1.1 daughterboards. No > changes were > > made to them. After plugging any of the two TVRX2 daughterboards - > either in > > addition to BasicRX or separately in any of the receiver slots of > any of the > > two USRPs - and trying to execute our code (or any other basic code like > > usrp_benchmark_usb.py) we get a standard error message: > > > > *> Warning: Treating daughterboard with invalid EEPROM contents as if it > > were a "Basic Rx." > >> Warning: This is almost certainly wrong... Use appropriate > burn-*-eeprom > > utility.* > > > ************************************************************************************ > > It looks like UHD is recognizing you daughterboard just fine, hence the > string "Name: TVRX2 (0x0046)" in the probe output. > > I think you are trying to use the old libusrp1-gnuradio driver, when you > should be using the gr-uhd source and sink blocks: > http://code.ettus.com/redmine/ettus/projects/uhd/wiki#Gnuradio-UHD > > ************************************************************************************ > > 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. -- Principal Investigator Shirleys Bay Radio Astronomy Consortium http://www.sbrac.org _______________________________________________ Discuss-gnuradio mailing list [email protected] https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
