Honestly, I have worked very little with gnuradio and do not quite understand what it means to transfer a UHD USRP object. If it does not make it difficult for you to show how it works, I will greatly appreciate it.
пт, 17 апр. 2020 г. в 21:27, Michael Dickens <michael.dick...@ettus.com>: > Ohh ... nice! I didn't know gr-uhd provided that interface! A quick search > shows it's in GR as of sometime in version 3.7 .. not sure how far back, > but certainly in the current release. Good to know! > > Note that this gr-uhd GPIO API is available in Python (via SWIG) as well > as C++ ... BUT: it is not exposed into GRC. > > Hence, to use the UHD GPIO API inside GRC, you'll still need to do what I > wrote previously: provide the UHD USRP object to your custom GRC block > (whether Python or C++), and then it can manipulate the USRP GPIO via the > gr-uhd Python provided API, or directly in C++ via the UHD C++ API for GPIO. > > Fun fun fun! - MLD > > > On Fri, Apr 17, 2020 at 1:36 PM Rob Kossler <rkoss...@nd.edu> wrote: > >> The following link (GR documentation) shows some UHD GPIO functionality. >> https://www.gnuradio.org/doc/doxygen/classgr_1_1uhd_1_1usrp__block.html >> >> On Fri, Apr 17, 2020 at 10:27 AM Michael Dickens via USRP-users < >> usrp-users@lists.ettus.com> wrote: >> >>> Hi Ivan - I'm assuming you mean configure and control a USRP's GPIO via >>> UHD in GNU Radio? >>> >>> In theory this should be possible, at least in C++ and of course it >>> requires that the specific USRP have GPIO ... >>> >>> I'm not sure if there's a Python GPIO API as of UHD 3.15, but if there >>> is then that method should work about the same as the C++ method. >>> >>> You'd have to get access to the instantiated USRP object, then you can >>> use that object to issue GPIO related calls. See these pages for more info >>> about GPIO in UHD: >>> >>> < https://files.ettus.com/manual/page_gpio_api.html > >>> >>> < >>> https://kb.ettus.com/Synchronizing_USRP_Events_Using_Timed_Commands_in_UHD#Example:_Using_Timed_Commands_to_Control_GPIO >>> > >>> >>> < >>> https://github.com/EttusResearch/uhd/blob/master/host/examples/gpio.cpp >>> > >>> >>> I can't think of a current GNU Radio block that handles UHD USRP GPIO. >>> If you look around & can't find one, then you'd need to create a custom GNU >>> Radio block to handle this. You would pass your new block the USRP object, >>> which you'd then use for the GPIO calls ... using Python or C++ depending >>> on which API is available for your specific UHD. >>> >>> Maybe there's another way that I don't know of? If so hopefully others >>> will add to the discussion! >>> >>> Hope this is useful! - MLD >>> >>> On Fri, Apr 17, 2020 at 9:15 AM Ivan Zahartchuk via USRP-users < >>> usrp-users@lists.ettus.com> wrote: >>> >>>> Hello. Please tell me if it is possible to configure GPIO using >>>> gnuradio. I want to use RFNOC blocks and switch an external device using >>>> GPIO >>>> _______________________________________________ >>>> USRP-users mailing list >>>> 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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