Exciting! I'll take a look. Out of curiosity, do you have any sense of
what sort of sub-second precision you're getting on setting the usrp2
time according to the host? It looks like the sample is fairly simple,
(i.e. just getting the current system time, then turning around and
setting the USRP2 time ASAP to that time, taking into account the fpga
clock rate). I wonder if the sync between host and USRP2 wouldn't be
better improved by measuring the (rough) RTT, and taking that into
account (e.g. measuring current system time, sending a control message
to the USRP2 and getting a response, measuring the system time again,
and using the difference as the RTT).
Doug