I am adding support for MCP23017. So the communication will be done through the I2C pins (GPIO2/SDA and GPIO3/SCL). MCP23017 will directly control 16 stations. I have the firmware changes implemented but now in the user interface I need to add the option to set each station to I2C. Right now the options are Standard, RF, Remote, GPIO and HTTP. So since I am not using the actual GPIOs of the RaspberryPI I need to add another I2C choice to the list.