[Tinyos-host-mote-wg] RE: [Tinyos-2.0wg] BusArbitration vs. Resouce

[mturon at xbow.com]

The AVR code is wiring to CC2420 required interfaces.  I agree that the
CC2420 interfaces that need updating are:

Alarm32khzC    --> CC2420RadioAlarm32khzC
This introduces abstraction for platform-specific timer implementations. 
A question on this came up today on tinyos-help: how to implement a cc2420
platform with only a 4MHz clk?  Also, the MICAZ historically feeds the
cc2420 a 32khz service by dividing a 7.4MHz signal.  By introducing this
abstraction, the platform is not forced to pass a HIL to the CC2420, they
can pass a HAL timer or a HIL. 

BusArbitration --> Resource
Perhaps this can be done through a dumb shim for now.  I would like to move
to the final interfaces as soon as possible.  Joe is the lead on this, so I
support whatever he needs to get the stack working.
 
Martin 
__________________________________________________
Martin Turon  |  Crossbow Technology, Inc.

-----Original Message-----
From: tinyos-2.0wg-bounces at Mail.Millennium.Berkeley.EDU
[mailto:tinyos-2.0wg-bounces at Mail.Millennium.Berkeley.EDU] On Behalf Of Joe
Polastre
Sent: Monday, August 08, 2005 9:56 AM
To: Philip Levis
Cc: tinyos2 group
Subject: Re: [Tinyos-2.0wg] BusArbitration vs. Resouce

Not necessarily.  Martin and I agreed that it is more important to get
the radio working with the existing interface than it is to move over
to Resource*.  If the radio works, then we can add extra complexity. 
Generally I'm not a fan of "change all variables at once and see what
happens" :)

On 8/6/05, Philip Levis <pal at eecs.berkeley.edu> wrote:
> It looks like a bit of the AVR code is still in terms of the
> BusArbitration interface rather than Resource. Changing this for the
> coming release isn't worthwhile, but we need to make the switchover
> as soon as pre goes out.
> 
> Phil
> 
> -------
> 
> "We shall not cease from exploration
> And the end of all our exploring
> Will be to arrive where we started
> And know the place for the first time."
> 
> - T. S. Eliot,  'Little Gidding'
> 
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