INA219.hpp

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/*
 * This file is part of the DUDS project. It is subject to the BSD-style
 * license terms in the LICENSE file found in the top-level directory of this
 * distribution and at https://github.com/jjackowski/duds/blob/master/LICENSE.
 * No part of DUDS, including this file, may be copied, modified, propagated,
 * or distributed except according to the terms contained in the LICENSE file.
 *
 * Copyright (C) 2017  Jeff Jackowski
 */
#ifndef INA219_HPP
#define INA219_HPP

#include <duds/hardware/interface/Smbus.hpp>
#include <duds/data/Quantity.hpp>

namespace duds { namespace hardware { namespace devices { namespace instruments {

class INA219 : boost::noncopyable {
    std::unique_ptr<duds::hardware::interface::Smbus> com;
    double shunt;
    std::int16_t shuntV;
    std::int16_t busV;
public:
    INA219(
        std::unique_ptr<duds::hardware::interface::Smbus> &c, // no PEC!
        double sr
    );
    ~INA219();
    duds::data::Quantity maxCurrent() const;
    duds::data::Quantity shuntResistance() const;
    duds::data::Quantity shuntVoltage() const;
    duds::data::Quantity busVoltage() const;
    duds::data::Quantity busCurrent() const;
    duds::data::Quantity busPower() const;
    void sample();

    void vals(std::int16_t &sV, std::int16_t &bV) {
        sV = shuntV;
        bV = busV;
    }
};

} } } }

#endif        //  #ifndef INA219_HPP