Lpc2000

Thank you for your answers.

As far as possible, I am not used to disable all interrupts, but it 
seems the WDT needs it.
(What was not clear to me is the meaning of 'writing in the WDT 
register space' - it seems the unwanted WDT reset triggesrs even if 
the ISR is writing somewhere else).

Now, stopping the interrupts, the WDT works fine.
 
***BUT***

After having read the user manual, chapter 'Spurious interrupts',
I see a lot of potential problems that can arise when disabling 
interrupts.

Is there a general rule or code sample to make VIC work safe when 
stopping interrupts?

Thank you.

>
> ***BUT***
>
> After having read the user manual, chapter 'Spurious interrupts',
> I see a lot of potential problems that can arise when disabling
> interrupts.
>
> Is there a general rule or code sample to make VIC work safe when
> stopping interrupts?

Use the psr to disable interrupts, not VIC, just write a little ARM code
that disable interrupts, triggers WDT and re-enables interrupts.

-- 
42Bastian Schick