[USRP-users] feedback from a USRP message

Derek Kozel derek.kozel at ettus.com
Mon Oct 30 11:30:08 EDT 2017

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

List of supported keys

There is also error reporting if the command type isn't correct.

If you aren't seeing the debug messages then try changing your GNU Radio
logging settings.


On Mon, Oct 30, 2017 at 2:54 PM, Jason Matusiak via USRP-users <
usrp-users at 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 at lists.ettus.com
> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
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