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Re: [Discuss-gnuradio] what is meant by "LLLLLLLLLLLLL...."?


From: Zing Yu
Subject: Re: [Discuss-gnuradio] what is meant by "LLLLLLLLLLLLL...."?
Date: Tue, 17 Jul 2012 16:20:30 -0700 (PDT)

Hi Josh,

The "late" packet gets sent anyway. Right? At least I have verified this at the receive side. Further, I hope that one L is printed for each "late" burst (i.e., no. of L's equals no. of late "bursts"). Correct? Finally, how can one print the metadata to find which of the bursts were late, assuming that there is a tag containing the burst number?

Thanks,
Yu.


From: Josh Blum <address@hidden>
To: address@hidden
Sent: Tuesday, July 17, 2012 5:53 PM
Subject: Re: [Discuss-gnuradio] what is meant by "LLLLLLLLLLLLL...."?



On 07/17/2012 03:50 PM, Zing Yu wrote:
> All,
>
> I have an application where I need to send timed-bursts, so, I have
> modified tags_demo.cc a bit according to my needs. Now, when I run
> the transmitter flow-graph in order to send timed-bursts, I
> occasionally see a sequence of "LLLLLLLLL..." in the console. I
> assume it is some sort of error message indicating that the time
> value carried by tx_time tag for that burst has been past at the
> FPGA. Am I right?
>

Correct, its a "late" packet. Time in packet > time on the fpga.

http://files.ettus.com/uhd_docs/doxygen/html/structuhd_1_1async__metadata__t.html#a2be1b5c0351746c78fa3bcb74a8ff5da

-josh

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