[ECOS] Watchdog

Wayne Gemmell waynetg@telkomsa.net
Fri Dec 17 13:15:00 GMT 2004


On Friday 17 December 2004 15:05, Gary Thomas wrote:
> Wayne Gemmell said:
> > Hi all
> >
> > The way I understand it the watchdog needs to be reset every >2.5 seconds
> > or the hardware gets reset.
>
> This is hardware/platform dependent, but in general, this is how watchdogs
> work.
>
> > Would the best way to implement this be to spread resets all over the
> > program or to run a high priority thread that runs reset at the
> > designated interval?
>
> A high priority thread would do, or possibly a separate high priority timer
> and service the watchdog in the ISR.
>
> It's probably better to isolate the watchdog service to one location rather
> than messing about all over the place.
Thanks :-)

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