MCP9808.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) 2020  Jeff Jackowski
 */
#ifndef MCP9808_HPP
#define MCP9808_HPP

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

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

class MCP9808 : boost::noncopyable {
    std::unique_ptr<duds::hardware::interface::Smbus> com;
    double temp;
    std::uint16_t config;
    char res;
    char rev;
public:
    enum Resolution {
        Half,
        Quarter,
        Eighth,
        Sixteenth
    };
    MCP9808(
        std::unique_ptr<duds::hardware::interface::Smbus> &c // no PEC!
    );
    ~MCP9808();
    bool running() const {
        return (config & 0x100) == 0;
    }
    void start();
    void resume() {
        start();
    }
    void suspend();
    void resolution(Resolution r);
    Resolution resolution() const {
        return (Resolution)res;
    }
    double resolutionDegrees() const;
    duds::data::Quantity temperature() const;
    void sample();
};

} } } }

#endif        //  #ifndef MCP9808_HPP