It is really the opposite, the cmd propagation flows upstream (from the rx_streamer to the DDC to the Radio). Rob
On Tue, Apr 4, 2023 at 3:00 PM yan zhang <yanzhan...@gmail.com> wrote: > So in general, we can just issue stream cmd to one source rfnoc block and > the cmd will propagates to all down stream blocks. Is this understanding > correct? > > Thanks! > > On Tue, Apr 4, 2023 at 11:27 AM Rob Kossler <rkoss...@nd.edu> wrote: > >> issue_stream_cmd() tells the Rx radio to start sending samples. You >> typically call this as rx_streamer->issue_stream_cmd(), and then the >> command "propagates" to all the blocks in the graph (such as DDC and then >> ultimately the Rx Radio). Without this command, the Rx radio will not >> begin streaming such that your call to "recv()" will timeout for lack of >> samples. >> Rob >> >> On Tue, Apr 4, 2023 at 10:58 AM <yanzhan...@gmail.com> wrote: >> >>> Hi all, >>> >>> Does anyone know the purpose of issue_stream_cmd() for the rx_streamer? >>> When I use the rx_streamer to stream data to the host, I just call the >>> recv() method. >>> >>> >>> The question is what is the purpose of issue_stream_cmd() for >>> rx_streamer in uhd? >>> >>> >>> Thanks, >>> >>> Yan >>> _______________________________________________ >>> 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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