> 1- Is it enough to do this? Shouldn't I tell the USRP2 to start streaming at > a specific timestamp? I have looked into the UHD files but wasn't able to > spot a function to do this, though. >
yes, the stream_cmd must have a time stamp specified so both usrp2s start streaming at the exact same time. Currently, it defaults to stream now: http://www.ettus.com/uhd_docs/doxygen/html/structuhd_1_1stream__cmd__t.html this change will require modifications to the gr-uhd source in the call to issue_stream_cmd > 2- If I don't use the clock_config, what are the defaults? > internal ref clock, sma pps > 3- In the runtime, how can I print the received packet timestamp to make > sure they are aligned? > print the first metadata.time_spec in the gr-uhd source work function should you be willing to wait, I am working on exactly this issue of multiple usrp2 alignment and I hope to push something up next week when I get it all working. -Josh _______________________________________________ Discuss-gnuradio mailing list [email protected] http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
