Port expander (MCP23017) and setWatch

Thanks for the reply @allObjects - So I did a quick test, hooked up via I2C and instantiated as "port". Tried:

setWatch(function(){print("test")},port.A0,{repeat:true,edge:'both'});

Got an error:

ERROR: Invalid pin

I suspect that the virtual pin is not compatible with the Pin() object the setWatch function expects...

Or, did you meant hooking up setWatch differently?