mpr121.hpp

/*
 * Author: Jon Trulson <jtrulson@ics.com>
 * Copyright (c) 2014 Intel Corporation.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
#pragma once

#include <string>
#include <mraa/i2c.hpp>

#define MPR121_I2C_BUS     0
#define MPR121_DEFAULT_I2C_ADDR    0x5a

namespace upm {
  class MPR121 {
  public:
    MPR121(int bus, uint8_t address = MPR121_DEFAULT_I2C_ADDR);

    bool configAN3944();

    void readButtons();

    mraa::Result writeBytes(uint8_t reg, uint8_t *buffer, int len);

    int readBytes(uint8_t reg, uint8_t *buffer, int len);

    uint16_t m_buttonStates;

    bool m_overCurrentFault;

  private:
    mraa::I2c m_i2c;
    uint8_t m_addr;
  };
}