Lpc2000

Jaya,

The watchdog generates a reset when it expires - see any of the user 
Manual's description of the watchdog and reset sequence for details.

From memory, reset is the highest priority exception on an ARM and 
cannot be masked. Therefore, whatever is being observed in this 
case, isn't related to priority.

If you have some specific evidence of a problem with the watchdog, 
maybe you could post the details, instead of making vague references 
to it?

Thanks
Brendan

--- In lpc2000@yahoogroups.com, "jayasooriah" <jayasooriah@...> 
wrote:
> It is because the watchdog timer on LPC is not wired to the Reset
> interrupt priority level of ARM7.  Thus the Data Abort exception 
that
> you are not dismissing locks out watchdog reset.
> 
> You could go down the chain (Data Abort, FIQ, IRQ, Prefetch Abort,
> then Undefined Instruction/SWI to discover at what level the 
watchdog
> reset is wired to ... I would if I relied on the watchdog to get me
> out undefined situations, but then I only use the watchdog to 
trigger
> a reset when I want it to.
> 
> It is not clear if this behaviour in LPC is a design or 
implementation
> error.
> 
> Jaya
>