Lpc2000

If you disable interrupts using the interrupt controller be aware of 
the spurious interrupt issues (mentioned in earlier postings).


--- In lpc2000@yahoogroups.com, "Sten Larsson" <stenl@n...> wrote:
> James,
> 
> You have two options in Thumb mode:
> 
> (1) Switch to ARM mode and disable interrupts in the CPSR, then 
switch back.
> (2) Disable interrupts in the interrupt controller.
> 
> There is no trick...
> 
> /sten
> Nohau Corp
> 
> ----- Original Message ----- 
> From: "James Dabbs" <jdabbs@t...>
> To: <lpc2000@yahoogroups.com>
> Sent: Thursday, May 06, 2004 9:56 AM
> Subject: [lpc2000] Disable()/Restore()
> 
> 
> > I'm looking for some assembler reference code to disable and 
restore
> > interrupts -- in thumb mode.  Working through something by hand, 
I just
> > seem to require a lot of instructions to do it.  In fact ARM 
takes a few
> > instructions to do it..  I suspect there is some trick to this but
> > Google has failed me..
> >
> > Any tips would be most welcome!
> >
> > Thanks,
> >
> > James Dabbs, TGA
> >
> >