Re: [Discuss-gnuradio] connect/disconnect blocks in hierarchical block depending on a variable

[CEL]

As said, your use case is not one for reconfiguration.

Best regards,
Marcus

On Tue, 2019-10-22 at 12:18 +0200, Thabet GHARBI wrote:
> Hi Marcus,
> 
> Thanks for the tip.
> 
> In this case, what type of conditions to use to reconfigure a flowgraph 
> (connect/disconnect blocks)?
> In GNU Radio usage manual, the only example given is time condition 
> "time.sleep(0.01)" 
> https://www.gnuradio.org/doc/doxygen/page_operating_fg.html
>  
> Best Regards,
> 
> 
> Le lun. 21 oct. 2019 à 13:22, Müller, Marcus (CEL) <address@hidden> a écrit :
> > Hello!
> > 
> > Re: 1
> > 
> > That's not how GNU Radio should be used, and thus, it's impossible to
> > do that, architecturally. Connecting blocks pretty much has non-
> > deterministic behaviour w.r.t. to buffer state, and also, without the
> > block connected, your flow graph probably wouldn't be properly
> > connected and couldn't even start!
> > 
> > Instead, have a block (not a hier block) that outputs items according
> > to some state. Often, it's easy to transport state transitions as
> > stream tags.
> > 
> > Re: 2
> > 
> > Hier blocks shouldn't be involved in signal processing. So, although
> > it's generally possible to make a hier block a message acceptor, it's
> > rarely a good idea.
> > 
> > Best regards,
> > Marcus
> > 
> > 
> > On Mon, 2019-10-21 at 10:52 +0200, Thabet GHARBI wrote:
> > > Hello,
> > > 
> > > I'm writing a hierarchical block in C++, in which I instantiate 3 custom 
> > > (hier)blocks.
> > > I want to start Block1 only, and depending on the value of one of its 
> > > attributes (which changes during processing), disconnect it, and connect 
> > > either block2 or block3,
> > > 
> > > 1- What's the simplest way to do this?
> > > 2- In case we use "message passing", is it possible to interpret the 
> > > message at hierarchical block level?
> > > 
> > > Thanks in advance.
> > >  
> > > Best Regards,
> > > _______________________________________________
> > > Discuss-gnuradio mailing list
> > > address@hidden
> > > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio

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