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Altera_Forum's avatar
Altera_Forum
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14 years ago

gpio input and output

I have a de2-115 board and i'm trying to do some basic functions but i'm hitting a roadblock. I used SOPC builder to create a system that has nios ii, two PIO interfaces where one is input and ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

Yes. You can either detect the change in software (i.e. read the pio and compare with a provious value stored in a variable) or enable the edge detection options in SOPC builder and use the IOWR_ALTERA_AVALON_PIO_EDGE_CAP macro.