Brent Brown wrote:
> Consider the method...
>
> Initialise once only in mainline code:
> watchcat = 0xAA
>
> During ISR:
> if watchcat = 0xAA
>   watchcat = !watchcat (invert the value)
>
> At end of mainline code:
> if watchcat = 0x55
>   watchcat = !watchcat
>   reset watchdog

This is rather a convoluted way of saying the interrupt routine sets a flag
and the foreground code kicks the dog based on the flag.


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