Hi Robin, The property tree is the abstraction here; you can query it!
Alos, instead of walking the parsed output of some UHD utility, I'd recommend you just directly query the USRP in the C++/C/Python... directly, using UHD. > I have noticed that IQ will stream from unpopulated daughtercard > slots... Is this expected? > Yes! Point is that you could have a custom daughterboard there that doesn't come with an EEPROM containing an ID that UHD understands and still want it to give you samples (you'd of course be better of if you just wrote a small daughterboard driver for that). Best regards, Marcus On 09/13/2017 11:39 PM, ROBIN TORTORA wrote: > > OK, I can walk the tree and map channels to populated slots based on > the name, assuming Unknown is an unpopulated slot... > > > Would be nice to have a better abstraction there... > > > I have noticed that IQ will stream from unpopulated daughtercard > slots... Is this expected? > > > In testing my app I have only 1 card per x310, yet I got 2x100 MSA > streams from a single device... > >> On September 13, 2017 at 4:55 PM Marcus Müller via USRP-users >> <usrp-users@lists.ettus.com> wrote: >> >> I'd actually recommend doing `uhd_usrp_probe --tree` and figure out >> which value you need from that. We don't actually guarantee the >> stability of the output of the plain-text uhd_usrp_probe. >> >> Best regards, >> >> Marcus >> >> On 09/13/2017 10:01 PM, Marcus D. Leech via USRP-users wrote: >>> >>> You could run uhd_usrp_probe and parse the output. >>> >>> >>> >>> >>> >>> >>> >>> On 2017-09-13 15:30, ROBIN TORTORA via USRP-users wrote: >>> >>>> Peeps, >>>> >>>> >>>> >>>> I have an X310 on windows with 3.10.2 and a single UBX daughtercard. >>>> >>>> >>>> >>>> get_rx_num_channels always returns 2 even though there is only a >>>> single daughtercard installed. >>>> >>>> >>>> >>>> I am guessing this is really returning the number of DDCs present? >>>> >>>> >>>> >>>> Is there a simple way to get the number of actual channels present >>>> a la the number of daughtercards, etc.? >>>> >>>> >>>> >>>> I am building a flexible data recorder and would like to to be able >>>> to adapt to different daughtercard configurations, so polling the >>>> device to get its configuration at runtime is important... >>>> >>>> >>>> >>>> Thanks, >>>> >>>> >>>> _______________________________________________ >>>> USRP-users mailing list >>>> USRP-users@lists.ettus.com <mailto:USRP-users@lists.ettus.com> >>>> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com >>> >>> >>> _______________________________________________ >>> USRP-users mailing list >>> USRP-users@lists.ettus.com <mailto:USRP-users@lists.ettus.com> >>> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com >> > > > >> _______________________________________________ >> USRP-users mailing list >> USRP-users@lists.ettus.com >> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
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