Lpc2000

Robert Adsett wrote:

> At 10:58 AM 12/8/05 +0100, Ake Hedman, eurosource wrote:
> >This is the right approach surely. I'm at that state now and have no
> >other alternative then to back a bit and go through this "the right
> >way". I just have myself to blame. Have used watchdogs for many years on
> >PIC, AVR and other processors and expected no problem there except for
> >the usual forgetting to feed it in certain places. Oh well it's my first
> >project on this processor family so this makes me learn useful stuff
> >just as you write (just a bit hard to appreciate that right now ;-) ).
> >Really need the watchdog to work in this application though so there is
> >no shortcut.
>
> One thought that occurs to me, and I have no idea whether it is an issue
> with this processor, is that some watchdogs must be cleared before 
> they are
> enabled or you run the risk of them firing as soon as you enable
> them.  Whether or not they do depends on when you start them and how the
> registers initialize etc...
>
> Robert

Good thought! Sadly it did not help on my problems. But I agree this is 
probably something one should do. The watchdog is  initialized to 0xff 
on reset according to the manual. The question here is if it is updated 
while disabled or will stay at 0xff until enabled. Have to test that.

Thanks!
/Ake


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-- 
 ---
Ake Hedman (YAP - Yet Another Programmer)
eurosource, Brattbergavägen 17, 820 50 LOS, Sweden
Phone: (46) 657 413430 Cellular: (46) 73 84 84 102
Company home: http://www.eurosource.se      
Kryddor/Te/Kaffe: http://www.brattberg.com
Personal homepage: http://www.eurosource.se/akhe
Automated home: http://www.vscp.org



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