Setup an IRQ on a component

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originally posted by soin@Sep 21 2006, 03:31 PM

hi,

how long does your interupt signal stay high?nios interupt is level sensitive, so maybe your interupt signal is too short and the processor doesn't detect the interupt.in general your peripheral should assert interupt pin, and it should stay high (or low) as long as the nios acknoledges the interupt, for example writing a bit in a peripheral's register .it's only an idea...

bye

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Hi Soin,

My interrupt signal stays high in 1 clock.

How do I know NIOS acknowledges the interrupt ?

Have you got any documents discussing about these (the "lenghth" of interrupt signal and NIOS interrupt acknowledgement) ?

Thank you,

Quan