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Scholar
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Registered: ‎05-31-2012

Fast Interrupt priority

Hi, when a source of interrupt is connected in fast interrupt mode, the priority is the same as normal interrupt?

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Registered: ‎04-13-2015

Re: Fast Interrupt priority

@mrbietola 

It's higher: FIQ can interrupt an on-going IRQ but the reverse is not true.

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Registered: ‎05-31-2012

Re: Fast Interrupt priority

Thanks, i'm not able to read this information from the documentation,

You are saying that fast interrupts can interrupt normal IRQ, so they are nested?

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Registered: ‎04-13-2015

Re: Fast Interrupt priority

@mrbietola 

Yes, that info is a bit difficult to find.  You can find it in the "Exception Handling" section of the "Cortex-A Series Programmer's Guide".

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Registered: ‎05-31-2012

Re: Fast Interrupt priority

Sorry i wasn't specifying my architecture, i use Xintc core on a Microblaze system, i'm not using Arm

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