Rob, I think that requires (or used to require) a patch. The fixes to the DDC/DUC may have been merged, but i think the patch also added an option to the RFNoC ‘graph’ block to set skip propagation = True. That may have been related to the bugs in DDC/DUC. Unsure as it’s been a few months since I worked with it.
<end transmission> > On Dec 20, 2021, at 11:53, Rob Kossler <[email protected]> wrote: > > > Not sure if this will be helpful, but there is an example UHD program called > rfnoc_radio_loopback which I think does a similar function. > Rob > >> On Mon, Dec 20, 2021 at 10:00 AM Paul Atreides <[email protected]> >> wrote: >> For what it’s worth, the RFNoC blocks are included in GNURadio 3.9 in both >> maint-3.9 and tag 3.9.4 >> I haven’t tested them yet, but it appears as though they are actively being >> maintained. >> >> <end transmission> >> >> > On Dec 20, 2021, at 05:26, Michael Hermann <[email protected]> >> > wrote: >> > >> > Hello, >> > >> > i am currently working on a small project using an USRP X310 combined with >> > UHD 4.0, gr-ettus 3.8 and GNUradio 3.8 on Ubuntu 20.04. >> > The final goal would be to implement the following flowgraph on an FPGA >> > without transferring data to the host in between: >> > >> > RX Radio ( -> DDC) -> FIR (-> DUC) -> TX Radio >> > >> > I followed the workshop example and implemented the gain block >> > successfully and it works for the mentioned examples. I tried to implement >> > the above mentioned flowgraph with the gain block instead of a FIR filter >> > for testing purposes. This setup does not seem to work correctly even >> > tough GNUradio does not display any errors messages. The TX Radio does not >> > transmit a signal, even if there is an input on the RX Radio Part. Weirdly >> > enough, if i use the following flowgraph >> > >> > RX Radio -> DDC -> RX Streamer -> TX Streamer -> gain -> DUC -> TX Radio >> > >> > the setup works and successfully relays the signal but routes the data >> > through the host which i want to avoid since the goal is to fully process >> > the signal on the FPGA. >> > >> > Greetings and thanks in advance, >> > Michael >> > _______________________________________________ >> > USRP-users mailing list -- [email protected] >> > To unsubscribe send an email to [email protected] >> _______________________________________________ >> USRP-users mailing list -- [email protected] >> To unsubscribe send an email to [email protected]
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