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Time need to change external interrupt from disable to enable and vice versa

Question asked by Akshay Katare on Aug 16, 2016
Latest reply on Aug 19, 2016 by EARL GOODRICH



I want to know how much time external interrupt need to change from disable(should never occur interrupt) to enable(to occur interrupt again) or vice versa.


I am using following method to enable and disable


PORTA_PCR13 ^= 10U<<16   //for disable

PORTA_PCR13 |= 10U<<16   //for enable


when I disable it and again enable it, sometimes it takes more time(I could not measure it) to occur interrupt again.

whether somebody know whether we need to wait for some time after enable and disable external interrupt?


Please let me know.


Thanks and regards,