Public driver declarations and configuration constants. More...

#include "TwoWire.hpp"

Classes
class	PCF8574
	PCF8574 eight-pin quasi-bidirectional I2C expander. Call begin() first. Release input pins by writing 1; check lastError() after I/O. More...

Macros
#define	PCF8574_LIB_VERSION (F("0.4.2"))
	Upstream PCF8574 library version string.
#define	PCF8574_INITIAL_VALUE 0xFF
	Default output latch byte, with all pins released high.
#define	PCF8574_OK 0x00
	No stored PCF8574 error.
#define	PCF8574_PIN_ERROR 0x81
	Invalid PCF8574 pin index.
#define	PCF8574_I2C_ERROR 0x82
	PCF8574 I2C read failure.

Detailed Description

Public driver declarations and configuration constants.

Classes