Hi Jason, The command message handling in the USRP source in GNU Radio is a bit interesting. The command may contain many pairs of key->value, most of which end up in a call to their own handler. There is a debug message printed for each of these handlers if you have GNU Radio debug messages enabled.
List of supported keys https://github.com/gnuradio/gnuradio/blob/a0adcd3347c7ffd6ef3c42ce7705a23978774d3b/gr-uhd/lib/usrp_block_impl.cc#L30 There is also error reporting if the command type isn't correct. https://github.com/gnuradio/gnuradio/blob/a0adcd3347c7ffd6ef3c42ce7705a23978774d3b/gr-uhd/lib/usrp_block_impl.cc#L538 If you aren't seeing the debug messages then try changing your GNU Radio logging settings. https://gnuradio.org/doc/doxygen/page_logger.html Regards, Derek On Mon, Oct 30, 2017 at 2:54 PM, Jason Matusiak via USRP-users < usrp-users@lists.ettus.com> wrote: > Is there anyway to get feedback from a sent message command to a USRP > source in GR? I was sending some commands and was *pretty* sure I was > doing it right, but to know for sure I sent a bogus command, and it didn't > complain (I expected to see something on the terminal). Is there anyway to > turn on some sort of print-out to see that it accepted the commands I am > sending (like changing freqs)? Or at the very least see when a bad command > was sent? > > _______________________________________________ > USRP-users mailing list > USRP-users@lists.ettus.com > http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com > >
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