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EXTIn: n > 4

Question asked by mcquaid.conor on Mar 29, 2012
Latest reply on Mar 30, 2012 by mcquaid.conor

I have one external interrupt working fine, but I need to add a few more and I'm failing to understand how it all maps out.

The one I have implemented is on PA3 and the ISR is void EXTI3_IRQHandler(void). 

Although the UM says that almost all pins on all ports can be used as EXTIs, there are only 5 EXTI IRQs. There does not seem to be an explicit way to map a pin to an ISR,
 so is it the case that only pins 0..4 on a port can be used for EXTI?

If not, I would be grateful if someone could illustrate how to do so.

(Using STM32F4Discovery/Keil with peripheral library 1.1.0)

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