How do you differentiate GPIO interrupts that share the same EXTI interrupt?

[DBurr]

Hi, I have a design where I have multiple GPIO interrupts and some share the same interrupt input line, for example EXTI10_15. How can I differentiate in the interrupt callback routine which GPIO triggered the interrupt aside from reading these GPIOs' input states?

Thanks,

Doug Burrell

[waclawek.jan]

JW

[Tesla DeLorean · Accepted solution]

They should flag individually, and OR together to generate the IRQ

Check EXTI->PR register (on F4 for example)

[DBurr]

Thanks for the info! That's exactly what I was looking for.

[DBurr]

Thanks, that's really helpful.