Ganesh Kumaravel

COP reset

Discussion created by Ganesh Kumaravel on Feb 23, 2006
Latest reply on Jan 10, 2007 by Martin Hein
Hi all,
is there any Application Notes on the COP(Computer Operating Properly) for MC9S12NE64?
 
i'm aware that by writing to COPCTL register, watchdog is enabled and writing  ARMCOP = 0x55;
 ARMCOP = 0xAA;
will restart the watch dog.
 
i have a set of queries for COP:-
 
1. Is there any bit indication, which tells me wheter the Reset happened due to Watch dog(COP) or due to some other reasons.
 
2. I'm installing a COP ISR (vector 2). but, on watch dog getting fired, it is not coming to the ISR. But, the system is getting reset.
 
 
please help me out of this.
 
Thanks
 

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