explanation
This is a simple user guide for PIO, which is frequently used as a Nios® II peripheral. There is also an example of interrupt setting when using PIO as input.
This document briefly explains how to use the PIO (Parallel I/O) provided by the Qsys system integration tool to control logic and devices outside the Qsys system as Nios® II peripherals. I'm here. Refer to this when using PIO as Input/Output or as an interrupt port. The C language source in the text can also be downloaded, so please refer to it as well.
Document
Tool version: Document for Ver.14.0
sample design
Here's a sample...
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