Adafruit_AW9523.h

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#ifndef _ADAFRUIT_AW9523_H
#define _ADAFRUIT_AW9523_H

#include "Arduino.h"
#include <Adafruit_I2CDevice.h>
#include <Adafruit_I2CRegister.h>

#define AW9523_DEFAULT_ADDR 0x58 

#define AW9523_LED_MODE 0x99 

#define AW9523_REG_CHIPID 0x10     
#define AW9523_REG_SOFTRESET 0x7F  
#define AW9523_REG_INPUT0 0x00     
#define AW9523_REG_OUTPUT0 0x02    
#define AW9523_REG_CONFIG0 0x04    
#define AW9523_REG_INTENABLE0 0x06 
#define AW9523_REG_GCR 0x11        
#define AW9523_REG_LEDMODE 0x12    


class Adafruit_AW9523 {
public:
  Adafruit_AW9523();
  ~Adafruit_AW9523();

  bool begin(uint8_t address = AW9523_DEFAULT_ADDR, TwoWire *wire = &Wire);
  bool reset(void);
  bool openDrainPort0(bool od);

  // All 16 pins at once
  bool outputGPIO(uint16_t pins);
  uint16_t inputGPIO(void);
  bool configureDirection(uint16_t pins);
  bool configureLEDMode(uint16_t pins);
  bool interruptEnableGPIO(uint16_t pins);

  // Individual pin control
  void pinMode(uint8_t pin, uint8_t mode);
  void digitalWrite(uint8_t pin, bool val);
  bool digitalRead(uint8_t pin);
  void analogWrite(uint8_t pin, uint8_t val);
  void enableInterrupt(uint8_t pin, bool en);

protected:
  Adafruit_I2CDevice *i2c_dev = NULL; 
};

#endif