Re: [Contiki-developers] UNITS in the timers

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

Perico delospalotes wrote:
> Hi,
> 
> I was looking at the contiki timers. I have seen that you use one timer in
> the xmac implementation called rtimer. I have seen that you use a variable
> called RTIMER_ARCH_SECOND to set this timer. I looked for the definition of
> this constant and I didn't find the units. Neither I saw the units in the
> rtimer definition. Is this time miliseconds?

It is defined as whatever clock source is used to drive it. The only
constant is the RTIMER_ARCH_SECOND. I.e., if you have a hardware timer
that runs at 32768Hz, the rtimer units is 1/32768 s and
RTIMER_ARCH_SECOND is 32768. If your hw timer runs at 4 Hz, the unit is
1/4 seconds an RTIMER_ARCH_SECOND is 4 (although such a low setting
would not work with the current X-MAC code).

/adam
  --
Adam Dunkels <ad...@si...>
http://www.sics.se/~adam/