Lpc2000

I'm running sample code from Rowley, using their "Crossworks for ARM" 
development suite. I'm working with IAR's demo board for the LPC2148 
and I'm having trouble with external interrupts. I have been able to 
run Rowley's timer_interrupt example, and have been able to stop at a 
set breakpoint in the startup.s file "irq_handler" section. But, I 
have not seen the external interrupt get that far. That being said, I 
have verified that the EXTINT flag is being set as it should be, when 
the external interrupt is asserted. Even though the flag is being set, 
it does not kickoff the irq_handler.

Any ideas what the problem could be?
P.S. I have used Rowley's timer_interrupt code as an example for my 
external interrupt code - they should act the same way, correct?...

Thanks!
Matt

Maybe you must define VECTORED_IRQ_INTERRUPTS in the preprocessor
defininition screen.
Then in your code, after initialization, (before the endless for loop
on the main program), call __ARMLIB_enableIRQ();

This works for me.

--- In lpc2000@yahoogroups.com, "lpc2131makingcl" <mking@s...> wrote:

>
> I'm running sample code from Rowley, using their "Crossworks for ARM" 
> development suite. I'm working with IAR's demo board for the LPC2148 
> and I'm having trouble with external interrupts. I have been able to 
> run Rowley's timer_interrupt example, and have been able to stop at a 
> set breakpoint in the startup.s file "irq_handler" section. But, I 
> have not seen the external interrupt get that far. That being said, I 
> have verified that the EXTINT flag is being set as it should be, when 
> the external interrupt is asserted. Even though the flag is being set, 
> it does not kickoff the irq_handler.
> 
> Any ideas what the problem could be?
> P.S. I have used Rowley's timer_interrupt code as an example for my 
> external interrupt code - they should act the same way, correct?...
> 
> Thanks!
> Matt
>