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Re: [lpc2000] Re: UART0 vs UART1

2005-02-27 by Robert Adsett

At 11:35 PM 2/25/05 +0000, dimaissaev wrote:
>--- In lpc2000@yahoogroups.com, Robert Adsett <subscriptions@a...>
>wrote:
> > At 01:49 AM 2/25/05 -0800, Srinivasa Reddy Mannem wrote:
> > >Could you please send me the code for UART0.
> >
> > There are examples in the files download area.  The newlib-lpc
>library (
> > http://www.aeolusdevelopment.com ) has drivers for both UARTS both
>polled
> > and interrupt driven.
>
>I can't use this interrupt by many reason. The main is Ineed a nested
>interrupts.

They would still be a way to verify your own approach didn't leave anything 
out though.


>And I think that I have a problem with them.

Which raises two questions
   Have you verified that you have working non-nested interrupts?  Always 
get the simpler case to work first.
   Are you absolutely certain you need nested interrupts?

I strongly suspect that nested interrupts will require an assembly language 
shim.  I would advise using such a shim even for standard interrupts but 
not everyone shares my paranoia on that :)

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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