Hi Xianglong, The thread you provided is pretty old. On recent UHD versions (including 4.4), it is possible to work directly without the splitstream block (i.e., Radio-Rx => custom block => Radio-Tx). You may need to handle time stamps - if your Radio-Rx is inserting time stamps, they will by definition arrive "Late" to the Radio-Tx if your custom block does not adjust them. You also might need to define your RFNoC graph with one edge as a "back edge" or something like that so that the RFNoC graph does not loop.
You may find it easier to get this working outside of gnuradio - perhaps using the rfnoc_radio_loopback example <https://github.com/EttusResearch/uhd/blob/master/host/examples/rfnoc_radio_loopback.cpp> or a modification of this for your custom block. Rob On Sun, Dec 3, 2023 at 12:24 PM Xianglong Wang <xianglong.w...@tum.de> wrote: > Dear All, > > I am using UHD 4.4 and GNURadio 3.10 and I am trying to set up an RX-TX > passthrough flow graph as discussed in this thread ( > https://lists.ettus.com/empathy/thread/MJKCCJEVNJKJOIRORPWDI6Z5WZNHSR3B?hash=MJKCCJEVNJKJOIRORPWDI6Z5WZNHSR3B#MJKCCJEVNJKJOIRORPWDI6Z5WZNHSR3B > ). > > However, my flow graph is not working either, and when I add the split > streamer as said in the thread, only the RX works, but the TX does not. How > can I get both RX and TX to work with such a flow graph? Thanks in advance. > > Kind regards, > Xianglong > _______________________________________________ > 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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