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[Discuss-gnuradio] Async Messages for Tx Timestamps

From: Jordan Otomo
Subject: [Discuss-gnuradio] Async Messages for Tx Timestamps
Date: Mon, 8 Apr 2013 13:45:36 -0700


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 


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