AVR-Chat

On Jun 17, 2008, at 5:45 PM, Philippe Habib wrote:

> In my case, it is required.  The fear is that if the micro dies in
> such a way that the watchdog doesn't work either you'd be in trouble,
> so you have an external watchdog which does the reset.  You also have
> some other way of detecting a dead micro and then arrange to fail in
> a "good" way.


So its based on fear rather than fact?

Fear that the watchdog is implemented as a software function that will  
fail the same way when/if the CPU fails? But if that was the case  
wouldn't the CPU be smoked and beyond recovery via reset?

--
David Kelly N4HHE, dkelly@HiWAAY.net
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Whom computers would destroy, they must first drive mad.