Re: [Discuss-gnuradio] Discuss-gnuradio Digest, Vol 142, Issue 22

[mark.w.christiansen]

The message passing interface works for this. I have a VITA-49 depacketizer I 
wrote and I used message passing to set the center frequency for QT Frequency 
Sink because it already has a frequency subscriber. But to use it in general, I 
have to change every block that needs information from the depacketizer. For 
example, if I want any blocks to use the sample rate supplied in the VITA-49 
context packet I need to add a sample rate subscriber to everything that needs 
to know about it.

/\/\ark.

On Thu, 18 Sep 2014 13:45:08 -0400, Martin Braun wrote:

> This sounds like a bad idea. And no, other than violating best
> practices, there's no way to do that.
> 
> What exactly are you trying to do? Would a message passing interface
> help?
> 
> M
> 
> On Thu, Sep 18, 2014 at 9:07 AM, <address@hidden>
> wrote:
> 
> >  Is there a way to have the C++ code of a block change the value of
> a
> > variable for the rest of the flow graph?
> >
> > /\/\ark.
> > --
> > Aim for brevity while avoiding jargon.
> > ~ Edsger Dijkstra