Re: [Discuss-gnuradio] Topology error

[Rob Judd]

Eric Blossom wrote:
> 
> On Tue, Jul 29, 2003 at 09:38:01PM +0100, Matthew Burnham wrote:
> > Having bitten the bullet and upgraded to gcc-3.3 and debian testing, I'm
> > now getting somewhere...
> >
> > I've got a relatively simple bit of code copied from one of the
> > examples (see below). This compiles fine, but I get the following error:
> > "Topology cannot be changed after inital setup." I'm assuing this is
> > something to do with the way the different Source, Sink and SigProcs are
> > connected together. Do I need to create the various source, sink and
> > SigProcs in a particular order?
> >
> > How can I solve this for this simple set-up?
> >
> >   VrMultiTask *m = new VrMultiTask ();
> >   m->add (scope_sink);
> >   m->add (sqr);
> >   m->add (scope_sink2);
> >   m->start();
> >
> 
> You only "add" the sinks.
> I think that if you remove the m->add (sqr)  you'll be on your way.
> 
> Note however that GrSimpleScopeSink's display is kind of screwed.
> We're fixing this stuff all in python.  Look for a new release
> sometime in the next week or two.

I've already installed Python in readiness. :)

This is a step in the right direction, since it separates the code from
platform dependencies somewhat and simplifies my job of getting this
thing running in Win32.

Rob