This is a library for the MCP23017/MCP23008 GPIO expanders. To learn more about the part, please see these datasheets: http://ww1.microchip.com/downloads/en/devicedoc/21952b.pdf [MCP23017] http://ww1.microchip.com/downloads/en/DeviceDoc/21919e.pdf [MCP23008]
This library is implemented in Squirrel (http://www.squirrel-lang.org/)
It targets the Electric Imp (http://electricimp.com/)