Thanks! I saw a noc_block_rfnoc_adder.xml in gr_ettus which looks as though it's all set to control such a selectable add-or-subtract block, but I never found the block.
On Fri, 2019-09-06 at 15:26 -0700, Nick Foster wrote: > Here's a modified add-only block. You'll have to make a matching .xml > descriptor and GRC block (if you're using gr-ettus). > > Probably it would be a super useful thing to have an add/sub block, > instead of an addsub block. A register-controlled mux to select which > operation you want. I'll think about adding that to the Theseus Cores > project. > > Nick > > On Fri, Sep 6, 2019 at 3:18 PM d.des via USRP-users < > usrp-users@lists.ettus.com> wrote: > > Nick- > > Could you share the tricks to remove one of the output ports? I > > don't > > I'm having similar issues with my modified addsub block and don't > > have > > enough room on the e310 fpga for extra fifos. It's not obvious from > > the > > noc_block_addsub code, the use of splitstream and dummy variables > > is > > very confusing. > > > > Tnx, > > Dave (and I'm sure many others, based on threads I've seen in > > searches) > > > > ________________________________ > > From: Nick Foster <bistromath at gmail.com> > > Sent: Tuesday, September 3, 2019 11:45:46 PM > > To: Quadri,Adnan <adnan.quadri at louisville.edu> > > Cc: usrp-users at lists.ettus.com <usrp-users at lists.ettus.com> > > Subject: Re: [USRP-users] Addsub HLS Block Error > > > > That shouldn't be. Even if you connect both outputs to the host? > > > > I admit I got fed up with it in my own application (don't want both > > streams going into the host) and just modified the addsub block to > > be > > an add-only block. > > > > On Tue, Sep 3, 2019 at 8:43 PM Quadri,Adnan <adnan.quadri at > > louisville.edu<mailto:adnan.quadri at louisville.edu>> wrote: > > I tried connecting one Signal Source block to both the inputs of > > addsub > > block. It still throws the same error. > > > > Adnan > > ________________________________ > > From: Nick Foster <bistromath at gmail.com<mailto:bistromath at > > gmail.com>> > > Sent: Tuesday, September 3, 2019 11:40:05 PM > > To: Quadri,Adnan <adnan.quadri at > > louisville.edu<mailto:adnan.quadri at > > louisville.edu>> > > Cc: usrp-users at lists.ettus.com<mailto:usrp-users at > > lists.ettus.com> > > <usrp-users at lists.ettus.com<mailto:usrp-users at > > lists.ettus.com>> > > Subject: Re: [USRP-users] Addsub HLS Block Error > > > > Oh, I see. You have separate sources connected to the same addsub > > block. It's telling you that you need to use timed stream commands > > to > > start the stream, or else you will see undefined behavior. > > Personally I > > think that error should be demoted to a warning -- anyone from > > Ettus > > want to chime in? > > > > On Tue, Sep 3, 2019 at 3:53 PM Quadri,Adnan <adnan.quadri at > > louisville.edu<mailto:adnan.quadri at louisville.edu>> wrote: > > Hello, > > > > Thank you for your prompt response. I have connected both the > > addsub > > output to two QT Gui Sink but I still get the same error. I have > > the > > Copy block in the middle as well. > > > > I am attaching a screenshot of my flowgraph. I tried with different > > USRP sources/Signal Sources as well. But it is the same error. > > > > Thanks, > > Adnan > > > > ________________________________ > > From: Nick Foster <bistromath at gmail.com<mailto:bistromath at > > gmail.com>> > > Sent: Tuesday, September 3, 2019 3:57 PM > > To: Quadri,Adnan <adnan.quadri at > > louisville.edu<mailto:adnan.quadri at > > louisville.edu>> > > Cc: usrp-users at lists.ettus.com<mailto:usrp-users at > > lists.ettus.com> > > <usrp-users at lists.ettus.com<mailto:usrp-users at > > lists.ettus.com>> > > Subject: Re: [USRP-users] Addsub HLS Block Error > > > > I ran into this the other day and it's independent of the HLS > > component > > of the addsub block (since the interface is identical). You need to > > connect both outputs of the addsub block to something, even a null > > sink. I'm pretty sure this wasn't the intended behavior and also > > pretty > > sure that it wasn't like this last time I checked (which was more > > than > > a year ago), so maybe it should be filed as a bug. > > > > Nick > > > > On Tue, Sep 3, 2019 at 1:48 PM Quadri,Adnan via USRP-users <usrp- > > users > > at lists.ettus.com<mailto:usrp-users at lists.ettus.com>> wrote: > > Hello, > > > > We are trying to run the RFNoC addsub HLS block. > > > > I was able to build the FPGA Image and made sure in the noc_block > > verilog code to point to the HLS implementation for addsub block on > > RFNoC as opposed to the verilog/VHDL implementation. > > > > But when we run the example Flowgraph with two signal source as > > input > > to the two inputs for addsub block on GRC, we get the following > > error - > > > > ERROR: > > thread[thread-per-block[4]: <block uhd_rfnoc_AddSub (1)>]: > > RuntimeError: Invalid recv stream command - stream now on multiple > > channels in a single streamer will fail to time align. > > > > Does this have anything to do with the C++ code for HLS > > implementation > > or is it a problem at UHD level? > > > > Thanks, > > Adnan > > _______________________________________________ > > USRP-users mailing list > > USRP-users at lists.ettus.com<mailto:USRP-users at lists.ettus.com> > > http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com<https://urldefense.proofpoint.com/v2/url?u=http-3A__lists.ettus.com_mailman_listinfo_usrp-2Dusers-5Flists.ettus.com&d=DwMFaQ&c=OAG1LQNACBDguGvBeNj18Swhr9TMTjS-x4O_KuapPgY&r=JoNl3b2Pn0MHhs668QvjpcSGl6s3MEmtJLBypH6x02U&m=XH0fqWeFmcl-P0_Y01iOhbHXEKDsJDUBaImT_nfh0t4&s=_hsJH03rqnDSUZXWGyx31-8I7HJLsU5_S5hs-j5_WRw&e=> > > -------------- next part -------------- > > An HTML attachment was scrubbed... > > URL: < > > http://lists.ettus.com/pipermail/usrp-users_lists.ettus.com/attachments/20190904/3138375d/attachment.html > > > > > > > > > _______________________________________________ > > 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
