Hi
I am going to build a system where ARM from atmel is used. AT91SAM7X…
I have 3 signals, 2 of them definitely needs to be on an external interrupt pin. The third one I am not sure yet.
Can someone tell me the difference in using FIQ instead of IRQ. What benefits/drawbacks?
Is it only possible to use the 2 IRQ and FIQ pins as external interrupt or can you use any pin on Port A and B? What are are the differences in this? Benefits/drawbacks?
/Peter