This class is written to simplify using the Microchip MCP23S17 general purpose I/O expander IC in the Arduino environment. Some understanding of the MCP23S17 is ...
#define MCP23017_PORT_A 0x00 //!< Port A used for port methods #define MCP23017_PORT_B 0x01 //!< Port B used for port methods #define MCP23017_INTFA 0x0E //!< Interrupt flag register A #define ...