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

From: Alick Zhao
Subject: Re: [Discuss-gnuradio] flow graph with feedback by using udp source/sink
Date: Fri, 11 May 2012 14:28:14 +0800
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:12.0) Gecko/20120430 Thunderbird/12.0.1

Sorry I forgot to CC my last email to the list. Below is Josh's reply
with my walkaround (quoted).

On Thu, 10 May 2012 10:35:49 -0700, Josh Blum wrote:
>> I will look into it and have a try. I wonder if there are some examples
>> to begin with the exploration. I don't have experience with next branch
>> for now.
> If it helps, many of these blocks use message passing. You can connect
> and see these message passing ports in GRC. This project is pulled in a
> subproject to my next branch:
> https://github.com/guruofquality/grextras
>> As with my original problem, I think I come up with a dirty solution:
>> I use additional vector source to produce some data, send it to the udp
>> sink at the beginning. Then after some time I reconfigure the flow
>> graph, disconnect the vector source and connect udp sink with my
>> receiver block. It seems to work for me.
> Hey, do whatever works best for you. There are many many solutions to
> passing stuff outside of gnuradio involving shared memory, named pipes,
> sockets. Anything that works is a valid solution :-)
> I just have a habit of telling people this message passing exists, in
> case they find it useful.
> -Josh

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