MCP23017Driver.h

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// SPDX-License-Identifier: AGPL-3.0-only
// Copyright (c) 2026 Douglas Quigg (dstroy0) <dquigg123@gmail.com>
// https://github.com/dstroy0/XPoint
 
#ifndef MCP23017_DRIVER_H
#define MCP23017_DRIVER_H
 
#include "I2CInterface.h"
#include "XPointDriver.h"
#include <stdint.h>
 
class MCP23017Driver : public XPointDriver
{
  public:
    typedef uint8_t (*MapFn)(uint8_t r, uint8_t c);
 
    MCP23017Driver(I2CInterface *i2c, uint8_t addr, MapFn map);
 
    void begin() override;
 
    void setNodeHardware(uint8_t r, uint8_t c, bool state) override;
 
    void commitPhysicalUpdates() override
    {
    }
 
    uint8_t gpioA() const
    {
        return _ga;
    }
 
    uint8_t gpioB() const
    {
        return _gb;
    }
 
  private:
    I2CInterface *_i2c; 
    uint8_t _addr;      
    MapFn _map;         
    uint8_t _ga;        
    uint8_t _gb;        
 
    void _commit();
};
 
#endif // MCP23017_DRIVER_H