Testing the interrupt extension API?
sebastian.huber at embedded-brains.de
Fri Oct 11 05:55:29 UTC 2019
On 10/10/2019 01:25, Gedare Bloom wrote:
>>>> Interrupts with cap.can_raise set and cap.has_peripheral cleared can be
>>>> safely software controlled and used for tests.
>>> Why not just have an "is_software_triggered"?
>> As a replacement for has_peripheral?
> yes, it seems that if an interrupt is software triggered, then it
> cannot have a peripheral. I don't know if the opposite is true though,
> I guess there can be interrupt lines that are not software triggered,
> but don't have a peripheral attached to them, but then they are not
> active lines they can't actually raise an interrupt. I don't know if
> that makes any sense.
On some controllers you can trigger every interrupt vector by software.
On some you you can only trigger a subset. On some systems, some
interrupt vectors are not available and cannot be triggered at all, e.g.
chip variant A supports hardware modules M0, M1, and M2, variant B
supports only M0, so the vectors used by M1 and M2 are not used (disabled).
Sebastian Huber, embedded brains GmbH
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