/*
 * Author: Henry Bruce <henry.bruce@intel.com>
 * Copyright (c) 2015 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.
 */


#include "mraa/i2c.hpp"
#include "upm/iCO2Sensor.hpp"

namespace upm {

/**
 * @brief Amphenol Telaire 6713 Series CO2 Module
 * @defgroup t6713 libupm-t6713
 * @ingroup i2c amphenol gaseous ico2sensor
 */

/**
 * @library t6713
 * @sensor t6713
 * @comname Telaire 6713 Series CO2 Module
 * @altname T6713
 * @type gaseous
 * @man amphenol
 * @con i2c
 * @if ico2sensor
 *
 * @brief C++ API for Amphenol Telaire 6713 Series CO2 Module
 *
 * The Telaire 6713 Series CO2 Module
 * [6713](http://amphenol-sensors.com/en/products/co2/co2-modules/3215-t6700#specifications-t6713)
 * is a CO2 Module sensor.
 *
 * @snippet t6713.cxx Interesting
 * @snippet co2-sensor.cxx Interesting
 */
namespace t6713_co2
{
         /* COMMAND VALUES */
        typedef enum
        {
                T6713_COMMAND_RESET,
                T6713_COMMAND_STATUS,
                T6713_COMMAND_GET_FIRMWARE_REVISION,
                T6713_COMMAND_GET_GAS_PPM
        }MODBUS_COMMANDS;



        typedef enum
        {
                ERROR_CONDITION,
                FLASH_ERROR,
                CALIBRATION_ERROR,
                WARMUP_MODE,
                SINGLE_POINT_CALIBRATION,
                RS232,
                I2C,
                RS485
        }STATUS;

        typedef struct
        {
                uint8_t function_code;
                uint8_t register_address_msb;
		uint8_t register_address_lsb;
                uint8_t input_registers_to_read_msb;
                uint8_t input_registers_to_read_lsb;

        }COMMAND;

        typedef struct
        {
                uint8_t function_code;
                uint8_t byte_count;
                uint8_t status_msb;
		uint8_t status_lsb;

        }RESPONSE;


        typedef enum
        {
                READ_INPUT_REGISTERS = 4,
                WRITE_SINGLE_COIL,
                WRITE_SINGLE_HOLDING_REGISTER
        }FUNCTION_CODES;
}//namespace t6713_co2


class T6713 : public ICO2Sensor {
    public:
        /**
         * Instantiates a T6713 object
         *
         * @param bus number of used bus
         */
        T6713 (int bus);

        /**
         * SI7005 object destructor.
         */
        ~T6713 ();

        /**
         * Returns sensor module name
         */
        const char* getModuleName();

        /**
         * Get relative humidity measurement.
         */
        uint16_t getPpm ();
        /**
         * Get the firmware version
         */
        uint16_t getFirmwareRevision();


    private:
        mraa::Result runCommand(t6713_co2::MODBUS_COMMANDS command);
	uint16_t getSensorData (t6713_co2::MODBUS_COMMANDS cmd);
        t6713_co2::STATUS getStatus();

        mraa::I2c* i2c;
        mraa::Result status;
};


}//namespace upm