[En-Nut-Discussion] Problems with WatchDog using multithreads

[Fernando Me Ga]

Thanks you.

2010/4/8 Ole Reinhardt <ole.reinhardt at embedded-it.de>:
> Hello,
>
>> I am trying to use WatchDog in my application but there is a problem
>> when several thread use NutSleep. These threads get block and the
>> WatchDog restart the system before the specified timeout. In the
>> simple example below it is expected to each thread puts there message
>> every 10 seconds but does not. They put there message only ones and
>> soon after the system restart.
>
> On Ethernut 3 for example the maximum time for the watchdog is about a
> second and a little... This depends on the watchdogs internal counter
> size and the used clock.
>
> In your case you'll generate an overflow in the watchdog timer register,
> resulting in a more or less random value for your watchdog but at least
> way shorter than expected.
>
> Bye,
>
> Ole
>
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