Re: [Contiki-developers] How to Put TelosB sleeping/waking

[Adam D. <ad...@si...>]

In addition to Marek's pointers to the on() and off() MAC methods, I 
would just point out that in the current CVS code, as well as in 
upcoming releases, the nullmac code has been split into two parts: a 
nullrdc.c that implements a duty cycling layer that does not do any duty 
cycling, and nullmac.c that implements a medium access control layer 
(collision management, etc) that does not do any mac mechanisms.

Bruno: I would have used either nullrdc or contikimac as the RDC layer, 
and then had a process that would call NETSTACK_RDC.off(0) and 
NETSTACK_RDC.on() to put the node to sleep and to wake it up, respectively.

Use Cooja/MSPsim and the TimeLine to ensure that your code does what it 
is supposed to, i.e. that the radio is actually off when you want it to 
be off.

/adam

On 2010-10-07 17:17, Marek Bykowski wrote:
> Hello Bruno,
>
> Look at the MAC routines such as on() and off(). If I had that task I
> would try to accomplish it at the MAC layer. All the available MACs are in
> ./core/net/mac
>
> Selection of a MAC for example for Tmote Sky is in
> ./platform/sky/contiki-conf.h (or so may mix the syntax).
>
> First off as it is easiest to acquaint yourself have a look at the
> nullmac. Maybe if you don't need any MAC use nullmac. If there are more
> nodes transmitting at the same time/almost the same time use any other
> MAC as using nullmac may end up with collisions.
>
> Best luck,
> Marek
>
>
> On 7 October 2010 16:12, Bruno Filipe Marques <bm...@es...
> <mailto:bm...@es...>> wrote:
>
>     Hi all,
>
>     I am wondering if someone could help me on this:
>
>     I need to wake a telosB node for 30 seconds for activity, then he
>     must sleep for one minute to wake again for 30 seconds, and so on.
>
>     Any help ?
>
>     Thanks in advance,
>     /bruno
>     ------------------------------------------------------------
>     Bruno Filipe Marques,
>     MsC in Electrical and Computer Engineering
>
>     FCT PhD Schollarship (SFRH/BD/36221/2007)
>
>     PhD Student @ DEEC/FEUP
>     WiN, Wireless Networks
>     UTM, INESC Porto,
>     http://win.inescporto.pt/
>
>     Electrical Engineering Department
>     School of Technology and Management
>     Polytechnic Institute of Viseu,
>     Portugal
>
>     url: http://www.estv.ipv.pt/paginaspessoais/bmarq/
>     e-mail: bm...@es... <mailto:bm...@es...>
>
>     MSN: bm...@ip... <mailto:bm...@ip...>
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Adam Dunkels <ad...@si...> | +46 70 7731614 | http://www.sics.se/~adam/
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