AM2320.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) 2018  Jeff Jackowski
 */
#include <duds/hardware/interface/I2c.hpp>
#include <duds/hardware/interface/Conversation.hpp>
#include <duds/hardware/devices/DeviceErrors.hpp>
#include <duds/data/Quantity.hpp>

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

struct AM2320Error : DeviceError { };

struct AM2320CrcError : virtual AM2320Error, virtual duds::general::CrcError { };

class AM2320  : boost::noncopyable {
    std::unique_ptr<duds::hardware::interface::I2c> com;
    duds::hardware::interface::Conversation wake;
    duds::hardware::interface::Conversation read;
    std::uint16_t rh;
    std::int16_t t;
public:
    AM2320(std::unique_ptr<duds::hardware::interface::I2c> &c);
    void sample();
    std::uint16_t rawRelHumid() const {
        return rh;
    }
    std::int16_t rawTemp() const {
        return t;
    }
    duds::data::Quantity relHumidity() const;
    duds::data::Quantity temperature() const;
};

} } } }