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Re: [Discuss-gnuradio] What time is it?

From: Per Zetterberg
Subject: Re: [Discuss-gnuradio] What time is it?
Date: Mon, 18 Jan 2010 22:02:57 +0100
User-agent: Thunderbird (X11/20090817)

Josh Blum wrote:
Glad you are trying out the branch. A few notes here:

1) There is a bug where after power-up, everytime (but the first) you restart streaming and get samples there is junk data, and it will read "bad vrt header". Its harmless, but should be fixed

2) FYI The second parameter to start_rx_streaming, if left out, means stream asap.

3) The time registers are write only. There is no control packet to read-back time registers. That should be removed from the code.

4) There needs to be a way to set the time on the next pps. This must be added, I am working on this now.... When done, you should be able to get the timestamp off of the serial port of a gps device and sync up the usrp2 to the correct seconds. Or use your own free-running seconds...

5) When you didnt get any samples back after setting time time: I cant tell if this is a bug or just a bad time. I will test this out


Does this imply that timestamps are completely useless without a pps signal ?

4) This sounds brilliant!


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