[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Discuss-gnuradio] UHD: samples alignment
From: |
Zohair |
Subject: |
Re: [Discuss-gnuradio] UHD: samples alignment |
Date: |
Sun, 4 Jul 2010 02:46:21 -0700 (PDT) |
Sounds good! I will start working on this tomorrow and if I get it working
that's good. if not, I will wait till you push it.
Thanks a lot.
Zohair
Josh Blum-2 wrote:
>
>> 1- Is it enough to do this? Shouldn't I tell the USRP2 to start streaming
>> at
>> a specific timestamp? I have looked into the UHD files but wasn't able to
>> spot a function to do this, though.
>>
>
> yes, the stream_cmd must have a time stamp specified so both usrp2s
> start streaming at the exact same time. Currently, it defaults to
> stream now:
> http://www.ettus.com/uhd_docs/doxygen/html/structuhd_1_1stream__cmd__t.html
>
> this change will require modifications to the gr-uhd source in the
> call to issue_stream_cmd
>
>> 2- If I don't use the clock_config, what are the defaults?
>>
> internal ref clock, sma pps
>
>> 3- In the runtime, how can I print the received packet timestamp to make
>> sure they are aligned?
>>
>
> print the first metadata.time_spec in the gr-uhd source work function
>
> should you be willing to wait, I am working on exactly this issue of
> multiple usrp2 alignment and I hope to push something up next week
> when I get it all working.
>
> -Josh
>
> _______________________________________________
> Discuss-gnuradio mailing list
> address@hidden
> http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
>
>
--
View this message in context:
http://old.nabble.com/Error-in-python-%28XML-file%29-tp29022268p29068054.html
Sent from the GnuRadio mailing list archive at Nabble.com.