> Maybe a better solution would be to use the UHD stream commands? Is it > possible to issue a sequence of stream commands and have them executed > serially by the USRP? > > Example: > * Issue command to send Z samples at clock value M > * Issue command to receive X samples at clock value N > * Issue command to send Y samples immediately based on the decoded received > samples >
You can absolutely do this. For send, this is an issue of tagging the stream with times and with start/end of burst. For receive, its done through issuing stream commands, we would need to swig up the issue_stream_command() call in the source block: http://www.ettus.com/uhd_docs/doxygen/html/structuhd_1_1stream__cmd__t.html One thing to point out: The gr-uhd source block expects samples to keep coming or it times out (something like a 1 second timeout). So there needs to be a way to block the source block's work function when its not reasonable to be receiving any samples. A simple solution might be to implement a mode where the source block continually re-tries after each timeout as long as the block has not been stopped (stop() called). -josh _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
