[En-Nut-Discussion] Watchdog/Idle thread issues again

[Alexander Baranov]

Interrupt service program is fully yours if the interrupt is not used
somewhere in NutOS.
----- Original Message ----- 
From: "Ulrich Hertlein" <ulrich.hertlein at artcom.de>
To: "Ethernut User Chat (English)" <en-nut-discussion at egnite.de>
Sent: Wednesday, December 07, 2005 9:11 AM
Subject: Re: [En-Nut-Discussion] Watchdog/Idle thread issues again


> Alexander Baranov wrote:
> > Hi, I'm afraid that I haven't understand your application but I had
similar
> > hang-up problem. I use interrupt from Timer 3 to restart external wdt
and to
> > increment some TIMEOUT long variable while main thread zeroes it. If the
> > TIMEOUT grows to some predefined value ( i.e. main thread fails to reset
it)
> > I do not restart  wdt in interrupt routine. Thus the reset timeout may
be
> > extended to dozens seconds.
>
> I'm doing basically the same thing except that I decrement a counter to
> zero and issue a reset when it reaches 0.
>
> I believe the trick is to use a timer instead of a thread? Are timers
> independent of the cooperative multi-tasking framework i.e. are they
> called even when some thread is blocking?
>
> /ulrich
>
> -- 
> Ulrich Hertlein | Software Development
>
> ART+COM AG
> Kleiststr. 23-26 | 10787 Berlin | Germany
>
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