teams.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 <mraa/aio.hpp>

// Unlikey to be changable
#define TEAMS_DEFAULT_AREF 5.0

namespace upm {
  class TEAMS {
  public:

    TEAMS(int tPin, float rResistor=0.0, float aref=TEAMS_DEFAULT_AREF);

    ~TEAMS();

    void update();

    float getTemperature(bool fahrenheit=false);

    bool isConnected()
    {
      return m_connected;
    };

    float getRawMilliamps()
    {
      return m_rawMilliamps;
    };

    void setOffsetMilliamps(float offset)
    {
      m_offset = offset;
    };

  protected:
    mraa::Aio m_aioTemp;

  private:
    float m_aref;
    float m_rResistor;
    int m_aResTemp;

    // for a 4-20 ma loop
    bool m_connected;
    float m_rawMilliamps;

    // in Celsius
    float m_temperature;

    // in case an offset should be applied to the cumputed current
    float m_offset;

    int average(int samples);
  };
}