[Tinyos-host-mote-wg] RE: [Tinyos-2.0wg] Virtualized Alarms

[Phil Buonadonna]

Eight!?!?

ok...Anyone want to write the Alarm virtualizer?

pb

Phil Buonadonna
Arched Rock Corp.
2168 Shattuck Ave. 2nd Floor
Berkeley, CA 94704
pbuonadonna at archedrock.com
(510) 981-8714 - Voice
(510) 868-1769 - Fax 

> -----Original Message-----
> From: cory.sharp at gmail.com [mailto:cory.sharp at gmail.com] On 
> Behalf Of Cory Sharp
> Sent: Friday, October 21, 2005 5:32 PM
> To: Phil Buonadonna
> Cc: Tinyos-2.0wg at mail.millennium.berkeley.edu
> Subject: Re: [Tinyos-2.0wg] Virtualized Alarms
> 
> Yup, that's a good question.  The precise question as I'd phrase it
> being, "How many alarms (in some platform specific combination of
> virtual and real) must a platform minimally support?"
> 
> The answer as it currently stands is, "We don't know the answer to
> that."  I actually don't know *how* I'd arrive at a number outside of
> pure speculation.  So it's not specified in the TEP.
> 
> Or we could just say, "eight."
> 
> - Cory
> 
> On 10/21/05, Phil Buonadonna <pbuonadonna at archedrock.com> wrote:
> > So, I apologize for 'flooding the list'. As I'm trying to 
> port the timer
> > subsystem to a new platform, I'm trying to make sense of 
> TEP 102 and the
> > existing implementations.
> >
> > This question concerns Alarms.
> >
> > Both the required alarm configurations (Alarm32khzC and 
> AlarmMilliC) are
> > generics => each new instantiation results in a completely 
> independent
> > Alarm.  This implies the underlying mechanisms does some kind of
> > virtualization OR maps to unique hardware resources.
> >
> > The atm128 implementation of Alarm32khzC seems to collapse all
> > instantiations of the configuration onto a single 
> component. Is this true?
> > Thus any additional instantiations of the alarm will results in a
> > catastrophic cacophony of alarmage.
> >
> > The msp implementation seems to do better, although each 
> alarm instantiation
> > is mapped to a single hardware resource.  The TEP, however, 
> does not define
> > a minimum number of channels. Should it?
> >
> > An answer of "yes, that's just the way it is now" is fine, 
> but just to get
> > clear on things.
> >
> > pb
> >
> > Phil Buonadonna
> > Arched Rock Corp.
> > 2168 Shattuck Ave. 2nd Floor
> > Berkeley, CA 94704
> > pbuonadonna at archedrock.com
> > (510) 981-8714 - Voice
> > (510) 868-1769 - Fax
> >
> > _______________________________________________
> > Tinyos-2.0wg mailing list
> > Tinyos-2.0wg at Mail.Millennium.Berkeley.EDU
> > 
> https://mail.millennium.berkeley.edu/cgi-bin/mailman/listinfo/
> tinyos-2.0wg
> >
> 
> 

_______________________________________________
Tinyos-2.0wg mailing list
Tinyos-2.0wg at Mail.Millennium.Berkeley.EDU
https://mail.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-2.0wg