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Altera_Forum
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21 years ago

PIO INTERRUPT

i configed the pio_1 of my nios II as synchronously capture,either edge,interrupt generated by edge. before i call the isr,i enable the irq of pio_1 by write the code as bellow: void* edge_cap...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
21 years ago

hi all

I do capture the edge ,so it seems that we can connect the interrupt singal from inside the fpga.

then why i find that the code inside isr (pio_interrupt handle) was not executed?

the first argument in alt_irq_register() is PIO_1_IRQ,and the third argument is the isr (pio_interrupt handle);

I can find any mistake in my code.

BTW,my nios II only has tow periphery.:pio_0 and pio_1;

and the on chip memory is 8kx32bits.

does the nios II isr need large memory space? http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/huh.gif