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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.
Ok,finally got it resolved by replacing the uC! It's a defective LPC932A1 with other features ok but not INT0 nor INT1.