Have you looked at the GRC siggen examples in gr-ettus? I just took a quick look and perhaps they are not helpful since the siggen block is the only RFNoC block in the examples. Rob
On Tue, Jan 15, 2019 at 9:30 AM Jason Matusiak via USRP-users < usrp-users@lists.ettus.com> wrote: > I'm a bit confused about the rfnoc siggen packet size option is doing. I > am trying to incorporate the siggen block into one of my designs, but it > doesn't work right. If I set packet size to 1, things aren't working right. > > So I change my packet size to something like 256, setting my other blocks > to the same. GRC doesn't want to run it because siggen's output doesn't > match the others, but that is fine. I press F5 to build, then F6 to run > it. The problem is that it won't run because: > ValueError: itemsize mismatch: uhd_rfnoc_FIFO1:0 using 2048, > time_sink_c0:0 using 8 > > For some reason, the XML doesn't handle changes to the packet size. I > tried to make the change myself, and it runs, but now nothing seems to be > exported. When I try to use the rfnoc_siggen example, it seems to hang > now. I get 'D' and "overrun on chan 0" over-and-over and GRC hangs. > > Something is special about siggen, but I can't figure out what. > _______________________________________________ > USRP-users mailing list > USRP-users@lists.ettus.com > http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com >
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