[En-Nut-Discussion] watchdog on eir

Ole Reinhardt ole.reinhardt at embedded-it.de
Mon Oct 25 18:06:11 CEST 2010


Hi Jörg,

> I intended to use the watchdog on eir. But I think that this isn't implemented yet. Can anyone help?

AFAIK the watchdog on the SAM7 family has one big disadvantage. 

The watchdog is always enabled at startup, configured with the largest
watchdog counter value. 

It can only disabled or changed, but not re-enabled later.

As not everybody wants to use the watchdog, Nut/OS disables the watchdog
for sam7 CPUs by default. 

So if you want to use the watchdog, you have to comment out this part in
the startup code and then set a new watchdog value in regular timing...

Kind regards,

Ole Reinhardt

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