ds2413.hpp

/*
 * Author: Jon Trulson <jtrulson@ics.com>
 * Copyright (c) 2016 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 <iostream>
#include <map>

#include <stdlib.h>
#include <unistd.h>
#include <string.h>

#include <mraa/common.hpp>
#include <mraa/uart_ow.hpp>

#define DS2413_DEFAULT_UART 0

namespace upm {
  class DS2413 {
  public:

    // The family code for these devices.  We handle all of them that
    // are found on the bus.
    static const uint8_t DS2413_FAMILY_CODE = 0x3a;

    // commands
    typedef enum {
      ACCESS_READ                         = 0xf5,
      ACCESS_WRITE                        = 0x5a
    } DS2413_CMD_T;

    // possible ack responses for gpio writes
    typedef enum {
      ACK_SUCCESS                         = 0xaa,
      ACK_FAILURE                         = 0xff
    } DS2413_ACK_T;

    DS2413(int uart=DS2413_DEFAULT_UART);

    ~DS2413();

    void init();

    int devicesFound()
    {
      return m_devicesFound;
    }

    int readGpios(int index=0);

    void writeGpios(int index, int value);

    std::string getId(int index)
    {
      return m_deviceMap[index];
    }

  protected:
    mraa::UartOW m_uart;

    // the total number of devices found
    int m_devicesFound;

    std::map<int, std::string> m_deviceMap;

  private:
  };
}