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Altera_Forum's avatar
Altera_Forum
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15 years ago

Interrupt priority IIR

Hi all, I'm using the NIOSII with an Internal Interrupt Controller (IIR) and 8 IRQ's triggered by PIO edges. I assigned a number to each one of the IRQs which represents it's priority where a l...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

Hi everyone,

I have added my own customized component "Dual FIFO" in SOPC builder.

I have kept its priority 0 to ensure it has top priority.

I have programmed in such a way that every 2 milli-sec an interrupt will come to NIOS II.

In my NIOS II application program, I registered the interrupt and written ISR.

Everytime an interrupt comes, ISR gets executed.

BUTTTT after some time ISR doen't get executed or I can say my system doesn't respond.

I experimented and calculated that ISR runs for fix number of times 14563 and stops after this.

What might be the reason ?

Please reply...

URGENT !!!!!!!!!!