Re: [Discuss-gnuradio] flow graph with feedback by using udp source/sink

On 05/09/2012 08:26 AM, Alick Zhao wrote:
> Hi list,
>
> I build a flow graph with both transmitter and receiver, and the forward
> path works fine. Then I want to let receiver block to feedback some data
> to the transmitter block, and I learn that GNU Radio does not allow the
> flow graph has loops. Now I'm trying to walkaround the limitation by
> using udp_sink and udp_source, but I haven't make it work.
>

FWIW, I have implemented a message passing for gnuradio that you can use
as a feedback mechanism. Its not mainline code.

Instructions:
http://gnuradio.org/redmine/projects/gnuradio/wiki/BlocksCodingGuide#Messages

Implementation is on the next branch:
git://gnuradio.org/jblum.git

-Josh

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