Re: [Discuss-gnuradio] Re: Combining gr.trellis and mod_pkt

[Eric Blossom]

On Thu, Jan 31, 2008 at 10:49:50AM -0500, Steven Clark wrote:
> Pardon the bump. Maybe I should simplify the question:
> 
> With the packet modulator, is it possible to run the packet payload
> bits through any kind of flow-graph/block during the rx_callback?

Yes.  You could push the bits back into a message source, do what you
like, and suck them back out of a message sink.  No need for a
separate flow graph, just more blocks (The top_block code currently
has an implementation limitation that allows only a single top_block.)


Eric


> On Jan 27, 2008 6:39 PM, Steven Clark <address@hidden> wrote:
> > 'lo all.
> >
> > I would like to place code in the rx_callback of the packet mod
> > architecture that takes each received payload and runs it though
> > gr.trellis's viterbi decoder.
> > Should this be possible?
> >
> > It seems like I'd have to set up, run, and tear-down a flowgraph or
> > top-block in the duration of the callback. But wouldn't this interfere
> > with the top-block/flowgraph that was already existing for the packet
> > demod framework?
> >
> > Any thoughts?
> >
> > -Steven