Re: LPC2xxx patch for support of vectored interrupt controller

[cetoni GmbH - Uwe Kindler <uwe.kindler@cetoni.de>]

Hello Hans,

I have to admit that I did not care about drivers that use interrupt 
priority 0 when I created the support for VIC controller in LPC2xxx 
variant. In current VIC support I decided to use 16 as the priority of 
the interrupts that do not use VIC - this is the formerly behaviour of 
the LPC2xxx interrupt support and of interrupts that use priority 0.

Another solution for this problem would be to invert interrupt 
priorities. That means interrupt priority 0 is the lowest interrupt 
priority and interrupt 16 is the highest priority. So if the drivers use 
interrupt level 0 they would fall back to the old (slower) interrupt 
handling. But that would not fix the test case that creates 2 interrupts 
of level 1.

I think your solution is cleaner - thank you for creating this patch

Best Regards,

Uwe


Dipl. Inf. (FH)
Uwe Kindler
Software Engineering

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