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Fjato's avatar
Fjato
Icon for New Contributor rankNew Contributor
6 years ago

How do I use PIO which is configured as InOut?

Hi, For a Cyclone V project I configured a PIO as InOut with a width of 1 bit in Qsys. Unfortunately I am not quite sure how to use the PIO to write and read data. So, which value do I need to write...
YuanLi_S_Intel's avatar
YuanLi_S_Intel
Icon for Regular Contributor rankRegular Contributor
6 years ago

OK, i understand what is your question already. For InOut, you have both input and output connected to the IP. Thus, you can just read / write the register 0 without the need to set register 1. Read Register 0 if you want to get the input and write register 0 if you want to write. Register 1 is only meant for bidirectional use only.

  • DylanD's avatar
    DylanD
    Icon for New Contributor rankNew Contributor
    3 years ago

    Hello, I'm trying to do the same thing as Fjato. What are you referring too when you say register 0 and register 1?