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Device Tree • Re: MCP23017 overlay error -EIO: can't write IOCON 32

You have exactly ONE interrupt! That's the one on GPIO18 to the Pi.

Assign events? viewtopic.php?t=381494#p2280204 should give you an idea.

Heavy load so far was on me and now it's time for you to learn that yourself Image may be NSFW.
Clik here to view.
:lol:


I hope you understand what below means. I've given you examples only ..

Code:

pins = "gpio11", "gpio12", "gpio13", "gpio14", "gpio15";bias-pull-up;
and yes, I have a full blown overlay here where I've tested all the possibilities of the expander with, but that's too much for some people here (not speaking of OP) hence it will stay with me.

Yoir primary source of information is in the device tree documentation as well as in the linux dt-bindings folder.

Statistics: Posted by aBUGSworstnightmare — Wed Dec 25, 2024 6:42 pm



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