MCP23017 Digital I/O Expander

[BaconRanch]

Hello,

I am up and working with MCP23017 Digital I/O expander.  Do I need the GPIO raspberry Pi custom integration too?  Can someone please explain the what each of these integrations do or why or why not they might be used.

Thank Uou,
Mark @ Bacon Ranch

[admin]

Do I need the GPIO raspberry Pi custom integration too? -->Not need, MCP23017 use for digital input and digital output enough.