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How to handle GPIO interrupt in linux user space application?

Sergio Kamakura
Expert 2495 points


Hi

Is it possible to handle GPIO interrupts in a linux application in user space?

I am debugging a video grabber cape board for BeagleBone Black and need to ( if possible ) intercept an interrupt from a GPIO pin ( GPIO2-5 pin ) from my program test to be able to synchronize video fields ( odd/even ) . There is a field signal coming from video decoder chip that is connected to GPIO2-5 pin. At rising edge the interrupt must be fired and my application, in some way, must capture this event.

Any help would be appreciated.

Sergio