MCP23017 chip settings

@Peerke wrote:

Hi,
I am new to HA.
I am planning to hook up a MCP23017 to my HA system
Found some integration documents to setup the I/O pins, there is no info to adjust the config register when the chip boots up to allow build in functions. I want to enable the interupt output as soon as a input pin on the MCP changes state. Int A for A port and INt B for B ports

How can this be done?

Kind regards,
Peter

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