On 12/23/2011 01:38 AM, Terry Fryar wrote:
> Using Xenomai 2.60 with 2.6.38 omap kernel on beagleboard xm.
>
> Trying to use a GPIO pin as an interrupt and catch this in a xenomai
> userspace program. Got the GPIO132 pin set as an input and is working fine.
> I guess I'll need to set the irq enable register on the omap cpu to enable
> it to generate irqs. Now...what irq number do I use in the xenomai
> rt_intr_create() function call?? I'm not sure how the omap gpio interrupts
> are mapped to the linux kernel/xenomai stuff?? Can I use what's in the
> arch/arm/plat-omap/include/plat/irqs.h header file? It appears that each
> bank of GPIO pins has it's own interrupt number??
Xenomai uses the same interrupt numbers as linux. But rt_intr_create is
deprecated in user-space, you should instead write a driver using the
rtdm skin. The enable bit is handled by xenomai when you request the irq
at xenomai level.
--
Gilles.
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