Yes, that’s definitely a bug that shown itself a couple of times on the thread. It also bit me once or twice.
<end transmission> > On Jul 19, 2021, at 05:05, Cherif Diouf <c.e.v.di...@tudelft.nl> wrote: > > > Thanks Paul! > > > > Indeed a DUC is needed. However I still had the same error after inserting a > DUC block in the transmission chain. > > It turns out that the "wire format" parameter of the RF_TX_streamer was set > to "automatic". It has to be changed to "complex int16" to make the flowgraph > work. > > > > Best Regards > > Cherif > > From: Paul Atreides <maud.dib1...@gmail.com> > Sent: Monday, July 12, 2021 4:12:33 PM > To: Cherif Diouf > Cc: usrp-users@lists.ettus.com > Subject: Re: [USRP-users] RFNoC TX Streamer issue > > the default X310 image has static connections in between the radio and the > endpoint on the crossbar, so while the dynamic routing of the stream is still > available, the two need to be used as a pair > in the image the layout is like this: > RX->DDC->EP->crossbar > EP->DUC->EP->crossbar > > the crossbar isn't exposed to the user via GNURadio, but i'm alluding to the > deepre architecture of RFNoC. > i'd recommend watching and reviewing these two presentations and their > accompanying video thoroughly as they describe the general architecture and > move into development. > > Presentations: > https://www.gnuradio.org/grcon/grcon20/grcon20_RFNoC_4_Part1.pdf > https://www.gnuradio.org/grcon/grcon20/grcon20_RFNoC_4_Part2.pdf > Video: https://youtu.be/M9ntwQie9vs > > > > > >> On Mon, Jul 12, 2021 at 7:41 AM Cherif Diouf <c.e.v.di...@tudelft.nl> wrote: >> Hi, >> >> >> >> I am using an X310 device and I have freshly install RFNoC 4, (Vivado >> 2019.1, UHD 4.0, GNU Radio 3.8, gr-ettus )using the migration guide >> >> >> >> (https://kb.ettus.com/RFNoC_4_Migration_Guide#Prerequisites). >> >> >> >> I tried to build a simple GNU Radio flowgraph >> >> >> >> GNU Radio source signal (cosine) -> RFNoC TX streamer -> RFNoC Radio. >> >> But when I run the graph I obtain the following error: >> >> "/usr/local/lib/python3/dist-packages/ettus/ettus_swig.py", line 1584, in >> make >> return _ettus_swig.rfnoc_tx_streamer_make(graph, num_chans, stream_args, >> vlen) >> RuntimeError: LookupError: KeyError: [convert] Cannot find an item size for: >> `' >> >> >> >> Do you have any idea where it should come from. >> >> >> >> Best Regards >> >> Cherif >> >> >> >> Below is the full tx script >> >> >> >> _______________________________________________ >> USRP-users mailing list -- usrp-users@lists.ettus.com >> To unsubscribe send an email to usrp-users-le...@lists.ettus.com
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