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

[Ole Reinhardt]

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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