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Altera_Forum
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21 years ago

Intterupt processing time

Hello! I'd like to know how many clock ticks interrupt handler takes from the interrupt point to interrupt handler function? I created project, which includes following components: PIO(outpu...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
21 years ago

Hi,

I did some test with "Nios II/fast core" and got those results:

Between user space to enter the beginning of Irq sections code: 10 cycles.

Then to came bame to user mode: 5 cycles.

If you use HAL altera for interruption, you got 265 to enter the beginning of handler, and 100 to exit to user code.

Sylvain