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Re: HAL_INTERRUPT_ACKNOWLEDGE question
On Wed, 2007-06-06 at 21:08 -0700, Daniel Helgason wrote:
> Generally, interrupts from higher priority sources are masked by the
> interrupt controller until HAL_INTERRUPT_ACKNOWLEDGE is called.
Oops, I can't believe I said that! I think it makes more sense that
interrupts from *lower* priority sources are masked until
HAL_INTERRUPT_ACKNOWLEDGE is called.
But really, it is target-specific whether higher, lower, or any are
released when HAL_INTERRUPT_ACKNOWLEDGE is called. Not that it makes any
difference in HALs that don't support nested interrupts but the macro
might have to tickle the interrupt controller and make it happy.
--
+---------------------------------------------
| Daniel Helgason <danielh@telus.net>
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