Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
10 years ago

How to use the "Debounce Operation" for a Cyclone V.

I would like to use the "Debounce Operation" for a Cyclone V GX, 5CGXFC5C6F27C7N, on a Terasic "Cyclone V GX Starter Kit." The starter kit uses a Schmitt-Trigger buffer on the board to reduce bounce ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
10 years ago

Since the GPIO interface you are talking about is on the HPS, there aren't any settings in Quartus for this. You will need to set it in software. Debounce is set in the gpio_debounce register. Once you've built the preloader, check the generated documentation files for the software library. There should at least be some register definitions for the gpio_debounce register you can use for this. There may (or may not) be a higher level routine to set debounce.