Lpc2000

One trap I fell into was that I was running my code in _user_ mode
rather than _system_ mode on the arm processor.

In user mode, you can't manipulate the interrupt enable / disable bits.

The rowley-supplied interrupt enable / disable routines assume you're
in system mode and don't work in user mode. It might be the same for
IAR (I don't know).

My way out? I now have a SWI routine to feed the watchdog
(IRQ automatically disabled - all you must do is disable FIQ
during the feed).

Hope this helps,
Danish
--- In lpc2000@yahoogroups.com, "Langosta39" <ahuska@...> wrote:
>
> I'm having trouble hitting the watchdog on the 2103.  It works just 
> fine without IRQs, but after I enable interrupts I can no longer feed 
> it.  I am disabling interrupts around the feed so it is atomic, and I 
> know the feed works becasue I call the same code in the init 
> function.  I've tried using the standard __enable_interrupt 
> __disable_interrupt functions in IAR and I've tried directly 
> manipulating the CPSR as per the errata sheet with no luck.  Any 
> advice?
> 
> Andy
>