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FIQ Interrupt for i.MX25

Question asked by Eric Kang on Mar 3, 2015
Latest reply on Mar 3, 2015 by igorpadykov

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,