FIQ Interrupt for i.MX25

erickang · ‎03-03-2015

Hi All,

I'm finding the FIQ handle method in i.MX257.

Please share the code if you have.

Actually I want to make the interrupt with around 100ms period.

The interrupt was not operated normally when I applied the GPT and EPIT.

So I want to use the FIQ in our product.

I know Linux might not satify the periodic Interrupt due to Linux Scheduler and Interrupt Handle Flow.

I could see the phenomenon in GPT and EPIT Timer, but I think FIQ has the better performance in Interrupt.

Could you give me how to apply FIQ in i.MX25?

Best Regards,

Eric.

igorpadykov · ‎03-03-2015

Hi Eric

I would suggest to look at next app note describing fiq

usage in linux

Best regards

igor

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