GitHub

Arduino library for MCP23S17 16 channel SPI port expander.

This library gives easy control over the 16 pins of a (SPI) MCP23S17 chip. This IC is strongly related to the MCP23017 I2C port expander - https://github.com ...
GitHub

TeelSys-MCP23S17-Arduino-Library/TeelSys_MCP23S17.h

#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 ...