wireport.hpp

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/*
 * Copyright (C) 2018 Gunar Schorcht
 *
 * This file is subject to the terms and conditions of the GNU Lesser
 * General Public License v2.1. See the file LICENSE in the top level
 * directory for more details.
 */
 
#ifndef WIREPORT_HPP
#define WIREPORT_HPP
 
#include <inttypes.h>
#include <stddef.h>
 
#ifndef ARDUINO_I2C_DEV
#define ARDUINO_I2C_DEV    (I2C_DEV(0))
#endif
 
#define WIREPORT_BUFFER_LENGTH 32
 
class TwoWire
{
  private:
 
    static uint8_t rxBuffer[];      
    static uint8_t rxBufferIndex;   
    static uint8_t rxBufferLength;  
    static uint8_t txAddress;       
    static uint8_t txBuffer[];      
    static uint8_t txBufferIndex;   
    static uint8_t txBufferLength;  
    static uint8_t txError;         
    static uint8_t transmitting;    
  public:
 
    TwoWire(void);
 
    void begin(void);
 
    void begin(uint8_t addr);
 
    void setClock(uint32_t clk);
 
    void beginTransmission(uint8_t addr);
 
    uint8_t endTransmission(void);
 
    uint8_t endTransmission(uint8_t stop);
 
    uint8_t requestFrom(uint8_t addr, uint8_t size);
 
    uint8_t requestFrom(uint8_t addr, uint8_t size, uint8_t stop);
 
    virtual size_t write(uint8_t data);
 
    virtual size_t write(const uint8_t *data, size_t size);
 
    virtual int available(void);
 
    virtual int read(void);
 
    virtual size_t readBytes(uint8_t *buffer, size_t length);
    virtual int peek(void);
 
    virtual void flush(void);
};
 
extern TwoWire Wire;
 
#endif /* WIREPORT_HPP */