[Tinyos-help] Micaz time measurement in microseconds

Jeongyeup Paek jpaek at usc.edu
Thu Sep 1 21:57:22 PDT 2005


You can look at SysTime modules in platform/mica2/
or contrib/vu/tos/platform/mica2/

Thanks.

Ruben Lagar wrote:

> I wanted to use the second choice, and i know about those high 
> resolution counters, but I don't know how to access that "16-bit Timer3".
>
> Could someone please tell me how to access those counters? I haven't 
> found any documentation about that matter.
>
> Thanks!!! Rubén.
>
>
>
> -------------------------------------------------------------------------------------------------
> There are a few ways:
>
> 1) toggle a HW pin and measure it on a scope
> 2) store start/stop time stamps from a high resolution counter
>   and retrieve them later.
> 3) use a timer capture register on a pin you control
>
> If you follow one of the SW solutions, you would probably want to use the
> 16-bit Timer3, as it is freely available.
>
> Martin
>
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-- 

Jeongyeup Paek
Embedded Networks Laboratory
Department of Computer Science
University of Southern California




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