Re: [Discuss-gnuradio] Scheduler Help/Question

[Eric Blossom]

On Tue, Jan 06, 2009 at 05:43:40AM -0800, Earle Frank wrote:
> 
> 
> Eric Blossom wrote:
> > 
> > The bug is that D should always produce an enable output, 1:1 with the
> > input.  If you're not sure of the state at start up time, output a
> > reasonable default value.
> > 
> 
> I guess I would agree with your 1:1 statement if I was using a
> gr_sync_block.  And I may not have previously said this, but I am using a
> gr_block. My understanding of the gr_block does not need a 1:1 input:output. 
> Is that incorrect?
> 
> My block D can not always produce an enable output.  Block D must see the
> complete event occur.  Then the block determines if the event was a valid
> event.  This can only be determined after the event is finished.  At that
> time if Block D sees a valid event, then the enable signal is output high
> for the time matching the event.  Otherwise the block outputs low for that
> time.
> 
> With this operation of block D, is it not possible to work in the framework
> of GNURadio?

What you're trying to do requires unbounded memory in the worst case.
Perhaps you should consider another way to organize your computation?

Eric