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Re: [Discuss-gnuradio] m-block timeouts, time passed, or pause?

From: Eric Blossom
Subject: Re: [Discuss-gnuradio] m-block timeouts, time passed, or pause?
Date: Mon, 21 Apr 2008 20:21:37 -0700
User-agent: Mutt/1.5.17 (2007-11-01)

On Mon, Apr 21, 2008 at 11:18:22PM -0400, George Nychis wrote:
> Eric Blossom wrote:
>  > How often are you checking for channel idle?  Couldn't you just cancel
>> and schedule a new one each time you check for channel idle?
> A new RSSI value is computed at the host with every new block of samples.  
> It doesn't use the FPGA value.  I suppose there is an approximate 
> inter-block spacing that could be used to approximate the time passed by 
> counting the number of blocks seen since the timer started and basing it 
> off the decimation value... but that varies with queueing and isn't very 
> CS-friendly which I think the m-block interface for MAC implementations 
> should be.  A timer pause method is much more straight forward.  But, I 
> don't know if the base architecture can support this.
> - George

What your asking for would be hard to do using the existing framework.

I still don't understand where you want to do this from.  That is,
which code would be making the determination that it was time to pause
or unpause the timer.


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