Re: Variable delay

[Marcus Müller]

Also note that there's already a message port for the delay_impl.cc
that Mike added earlier this year on master:

If you want to use message passing to build an asynchronous feedback,
that's what you'd want to do. We don't port all features that are added
on master automatically back to 3.8 – but if you want to cherry-pick
that onto maint-3.8, Hassan, and make a pull request out of it, that
would be a nice contribution to GNU Radio!

Best regards,
Marcus

On 25.11.20 18:55, Paul Boven wrote:
> Hi Hassan,
> 
> On 11/25/20 6:27 PM, Hassan Khalili wrote:
>> I have a delay block in my flowgraph. Is it possible to change the
>> delay programmatically based on a stream output further down (in a
>> feedback fasion)? Or do I have to implement my own delay block with an
>> additional input for a delay stream?
> 
> You can use a variable in the delay block, and then update it using e.g.
> ZMQ or XMLRPC messages. Direct feedback in a GNU Radio flowchart is not
> possible, you can't have loops in a flowchart.
> 
> Regards, Paul Boven.
>