Adafruit_MCP23008_RF.h

/*************************************************** 
  This is a library for the MCP23008 i2c port expander

  These displays use I2C to communicate, 2 pins are required to  
  interface
  Adafruit invests time and resources providing this open source code, 
  please support Adafruit and open-source hardware by purchasing 
  products from Adafruit!

  Written by Limor Fried/Ladyada for Adafruit Industries.  
  BSD license, all text above must be included in any redistribution
  https://github.com/adafruit/Adafruit-MCP23008-library
 ****************************************************/

//  Modified the original class name, Adafruit_MCP23008,
//  to avoid conflicts with the Adafruit's LCD library.
//  Added allPinMode() function
//  By Robert Fraczkiewicz, 7/17/2016

#ifndef _Adafruit_MCP23008_RF_H
#define _Adafruit_MCP23008_RF_H

#if ARDUINO >= 100
#include "Arduino.h"
#else
#include "WProgram.h"
#endif
#include <Wire.h>
#ifdef __AVR
#include <avr/pgmspace.h>
#elif defined(ESP8266)
#include <pgmspace.h>
#endif

// Don't forget the Wire library
class Adafruit_MCP23008_RF {
public:
  void begin(uint8_t addr);
  void begin(void);

  void pinMode(uint8_t p, uint8_t d);
  void allPinMode(uint8_t d);
  void digitalWrite(uint8_t p, uint8_t d);
  void pullUp(uint8_t p, uint8_t d);
  uint8_t digitalRead(uint8_t p);
  uint8_t readGPIO(void);
  void writeGPIO(uint8_t);

 private:
  uint8_t i2caddr;
  uint8_t read8(uint8_t addr);
  void write8(uint8_t addr, uint8_t data);
};

#define MCP23008_ADDRESS 0x20

// registers
#define MCP23008_IODIR 0x00
#define MCP23008_IPOL 0x01
#define MCP23008_GPINTEN 0x02
#define MCP23008_DEFVAL 0x03
#define MCP23008_INTCON 0x04
#define MCP23008_IOCON 0x05
#define MCP23008_GPPU 0x06
#define MCP23008_INTF 0x07
#define MCP23008_INTCAP 0x08
#define MCP23008_GPIO 0x09
#define MCP23008_OLAT 0x0A

#endif