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Forum Topic - GPIO Interrupts not being caught by QNX interrupt handler on am335x: (2 Items)

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Matthew Rottinghaus(deleted)

04/11/2019 2:49 PM

post119654

GPIO Interrupts not being caught by QNX interrupt handler on am335x

I am having an issue with GPIO interrupts in QNX.
I have been able to create and handle interrupts from other peripherals in QNX using InterruptAttach, following the 
documentation, but it does not receive any GPIO interrupts.
I have checked that the interrupts are getting unmasked, and the GPIO_IRQSTATUS_RAW interrupt bit is being set, but my 
code is still not receiving the interrupt. 

This is in QNX Neutrino 7.0 on a Beaglebone Black. I am trying to get a high level interrupt from GPIO port 1.
Does anyone know what might be causing this issue, or where I could find example code of GPIO interrupts in QNX on the 
Beaglebone Black?

Matthew Rottinghaus(deleted)

04/11/2019 3:22 PM

post119655

Re: GPIO Interrupts not being caught by QNX interrupt handler on am335x

I solved my problem.
The GPIO IRQ numbers are different in QNX, as described in the 2nd reply to this post:
http://community.qnx.com/sf/discussion/do/listPosts/projects.core_os/discussion.newcode.topc27325

They are defined in init_intrinfo.c in the BSP. So GPIO port 1 pin 14 is IRQ 814.

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