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LPC2368 - GPIO Interrupt configuration - VICIntEnable(bit 17) needed ?

Hi !

I would like to configure some PORT0/2 pins as interrupt.
From the user manual I read that :
- §10.2.2 : GPIO0 and GPIO2 interrupts share the same VIC slot with the External Interrupt 3
event. So I Have to install my isr on VICVectAddr17
- §10.5.6 : IO0IntEnR IO0IntEnF are used to configure pins as interrupt on rising and/or falling edge.

I wonder if I still need to configure those pins as input when I enable them as interrupts ?
I would like to avoid interrupts on EINT3, but I wonder if possible : do I need to enable interrupt on EINT3 (VICIntEnable bit 17) in addition to IO0IntEnR/IO0IntEnF to activate interrupts on port 0/2 ?

Thanks for Response.

PS : I think that I'll do the test anyway.