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Lpc2000

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Message

Re: Watchdog and external Interrupt problem

2005-03-15 by itsjustimpossible

Thanks to all those who replied. Sorry for the delay in replying, 
finally got back to working on this again.

Just a quick question, yes I am in User mode all the time which 
means doing a software interrupt to change mode to disable/enable 
interrupts. This is all a bit too slow.

We are not using an RTOS, so are there any drawbacks with staying in 
Supervisor mode as you suggest?

many thanks
Simon

--- In lpc2000@yahoogroups.com, Robert Adsett <subscriptions@a...> 
wrote:
> At 03:22 PM 2/27/05 +0000, itsjustimpossible wrote:
> >When I kick the watchdog I am disabling all the interrupts using 
the
> >VIC. Do I have to jump to system mode and disable the global IRQ 
and
> >FIQ flags? This would probably be too slow...
> 
> What mode are you normally in?  You can't disable interrupts in 
user mode, 
> but there is really no reason to ever be in user mode.
> 
> Robert
> 
> 
> 
> " 'Freedom' has no meaning of itself.  There are always 
restrictions,
> be they legal, genetic, or physical.  If you don't believe me, try 
to
> chew a radio signal. "
> 
>                          Kelvin Throop, III

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