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Altera_Forum's avatar
Altera_Forum
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15 years ago

Problem with getting IRQ from PIO (Really simple i guess)

int context=0; volatile int edge_capture; int main() { IOWR_ALTERA_AVALON_PIO_IRQ_MASK(PIO_0_BASE,0xF); alt_irq_register(PIO_0_IRQ,(void*)&edge_capture, handle_pio); while(5); return 0...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

you not only need to enable interrupts on the PIO core, but on the NIOS side as well.

you can enable and disable interrupts using alt_irq_enable and alt_irq_disable.

try adding this after you register your ISR.

alt_irq_enable(PIO_0_IRQ);