Hi Ivan - I'll work with you off-list on this topic. If we figure out something useful, we can report back to the lists here. - MLD
On Fri, Apr 17, 2020 at 7:41 PM Ivan Zahartchuk <adray0...@gmail.com> wrote: > > 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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