For the Mica2 mote and other ATmel micro-controller, you can use
Avrora :
http://compilers.cs.ucla.edu/avrora/

Sylvain.

On Fri, 2009-10-30 at 21:55 -0700, Omprakash Gnawali wrote:
> On Thu, Oct 22, 2009 at 12:19 AM, amrita ghosal <[email protected]> 
> wrote:
> >
> > Can anyone please tell me how much energyis required by a node to do a 
> > single computation for example for shifting a bit in one clock cycle.
> 
> It depends on how you define a node. If you define it to be just a
> CPU, you can look up the numbers on the datasheet. You can find out
> how many cycles it takes to execute an instruction, how fast the clock
> runs, power supply voltage, ...
> 
> If you define a node to be the set of support components in addition
> to a CPU (a more realistic definition of a node), you might be
> spending a lot of energy even without performing any computation or
> communication.
> 
> - om_p
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