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Full Version: How can I use Interrupt ?
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Board: KC868-A8S
platform : Platform IO on vscode

My Project require Interrupt Signal .. about water flow rate from flow meter 
Can I connect some gpio for interrupt process ? 

Thank you so much.
you can connect to digital input port.
Excuse me. Do you have example?
What gpio that INT pin of the PCF8574 is connect?

Thank you
you can firstly use "GPIO" in photo.
DI1-DI8 use by PCF8574, so the speed limited by PCF8574 bus scan speed.
[attachment=2640]
Is it gpio 14 alright?
yes