[Discuss-gnuradio] Async Messages for Tx Timestamps

[Jordan Otomo]

Hi,

I have a packet-based application where it would be useful to know exactly when 
each packet has been successfully radiated by the USRP (N200).  It seems that 
UHD and gr-uhd already provide similar functionality for receiving asynchronous 
messages when a burst has been successfully transmitted (EVENT_CODE_BURST_ACK). 
 However, in my application, I'm transmitting continuously and don't use 
end_of_burst tags. Would it be possible for the USRP to post messages to the 
event queue when it has transmitted a sample with a generic tag attached?  If 
not, will I experience an interruption of my signal or any latency if I insert 
end_of_burst tags into my continuous stream of samples?  Your advice is greatly 
appreciated.

Thanks!
Jordan