Re: [Discuss-gnuradio] To implement WiMAX with GnuRadio or not?

[Marcus D. Leech]

On 26/05/2011 9:55 AM, Michael Dickens wrote:
> It would be great if you could share with the list example code snippets of how 
> you do the pipes.  For example: Where in an online repository one can find such 
> code.
>
> I think that's what Jeff was getting at: that "we" are providing IANAL advice rather than 
> code examples.  I, for one, have never actually tried the pipes -- I've just heard that they are 
> possible and that using them does not form a "greater work" in the GPL sense. - MLD
>
>
> _______________________________________________
Actually, my SIDSuite code uses this a little bit, in that data 
recording is handled outside of Gnu Radio.  The basic idea is that there's
  a shell script that sets up the environment (creates the FIFO files, 
starts the external programs in the background, etc), then the
  Gnu Radio flow-graph is called.  The flow-graphs just use "File 
Source" and "File Sink" with buffering turned off--as far as Gnu Radio
  is concerned, it's writing to a file, but in fact, it's a FIFO file 
or "named pipe".

See:

http://www.sbrac.org/files/sidsuite.tar.gz

It doesn't do it as much as other code that I've written, but it gives 
one a flavour for how the pipes are used.

The other "trick" that I use is to use the XMLRPC server stuff that Josh 
put in GRC--it allows you to set flowgraph variables from an
  outside program, which is really great!