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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.
Yes, I'ved tried both Input only (P1M1.4=1,P1M2.4=0) and Quasi-bidirectional (0,0). Then I set INT1=1,they both don't work. Have you successfully used either INT0 or INT1 on the LPC932A1?
Oh, Erik, I remember you were in the thread back in 2003,right? how was it resolved? because I think I'm facing exactly the same issue.
Vic
Ok,finally got it resolved by replacing the uC! It's a defective LPC932A1 with other features ok but not INT0 nor INT1.