Re: [Discuss-gnuradio] Re: gnuradio flowgraph mechanism

[Jeff Fifield]

Greg Troxel wrote:
>   After further thought, the simplest way to glue them together is to
>   just use unix-domain datagram sockets or other IPC.  This takes about
>   5 lines of Python on the GNU Radio end.
>
> At BBN we're planning to have some sort of integration between Click
> and GNU Radio (to do data networking with Click as the router and GNU
> Radio as the PHY, and the MAC somewhere TBD in between), and are
> heading for multiple processes and IPC exactly as Eric suggests.  This
> also avoids having to figure out if the Click license is GPL
> compatible and requiring one's changes to Click to be under the GPL
> rather than the BSD/X11-like Click license.  More importantly, it
> avoids difficult and hard to maintain cross-project software
> dependencies.

A year or two ago I made a shared memory ring buffer thing to let user 
level click and kernel level click talk to each other.  Later I wrote 
some gnu radio code to talk to kernel click over the same interface.

The click code is available via subversion here: 
https://systems.cs.colorado.edu/svn/userclick  There were some changes 
to linux internals that broke this recently but I know it works with 
slightly older kernels, for example 2.6.11.6.  I have a newer version 
somewhere that I should find and check in...

The gsr code using the click interface is here: 
http://systems.cs.colorado.edu/~fifield/gsr_click.tar.gz  This produces 
and consumes gr_messages.

-jf