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New! P89LPC932 External Interrupt

Hi,

I cant seem to use neither INT0 nor INT1 as external Interrupt inputs on the LPC932A1. There was a similar thread back in 2003 but unfortunately it wasn't completed. I'm using Uv2 IDE and A51 compiler.

What I observe using EX1 is as follows:
EX1=1
EA=1

when IT1=0, ISR gets called all the time no matter what level P1.4 is at.

when IT1=1, ISR executes only once no matter what level P1.4 is at.

so it appears that the actual pin level is not activated for external interrupt use.

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