Dear Philip,
Thank you for your reply.
As you said that CC2420 LPL in Tinyos2.x works with
arbitrary topologies, I tried to use LPL with
collection protocol provided in tinyos2.0.2. I used
the LowPowerListening interface in my top level
application to set the sleep interval of TX and Rx
sides. The application somehow worked with one
transmitter & one receiver. But the lowest current
consumption was 4mA which is very huge. Also the
initial tree formation time is very big. If I use a
sleep interval of more than 3seconds the tree dosent
even forms and nothing works.
I think as the CollectionTree also uses ActiveMessage
to send/receive data/routing packets, the
sleepinterval setting should be controlled at a single
point from where all packets (i.e routing and data)
flow, that is the ActiveMessage component.
Can you please comment on the above?
Also it would be great if you have some suggestion to
use another multihop routing on top of CC2420LPL.
Regards
Ravi
--- Philip Levis <[EMAIL PROTECTED]> wrote:
> Ravi Prasad wrote:
> > Hi all,
> >
> > My need - Low power multihop for CC2420 (with
> > Atmega128 mcu i.e micaz)..
> >
> >
> > Low power CC2420 is being asked so many times in
> this
> > list. I have been working on TinyOS1.x and in that
> low
> > power CC2420 was not really available.
> >
> > Now I have switched to TinyOS2.x and I know that
> there
> > is a LPL implementation of CC2420. But it seems
> that
> > is for a Star network topology & not used in any
> > multihop routing protocol. Am I right??
> >
>
> The CC2420 LPL in 2.x works for arbitrary
> topologies.
>
> Phil
>
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