upm/src/ecs1030/ecs1030.h

/*
 * Author: Yevgeniy Kiveisha <yevgeniy.kiveisha@intel.com>
 * Copyright (c) 2014 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 <math.h>
#include <mraa/aio.h>
#include <mraa/gpio.h>

#define NUMBER_OF_SAMPLES  500
#define ADC_RESOLUTION     1024
#define SUPPLYVOLTAGE      5100
#define CURRENT_RATIO      2000.0

#define HIGH               1
#define LOW                0

#define TRUE               HIGH
#define FALSE              LOW

namespace upm {
    class ECS1030 {
        public:
            static const uint8_t DELAY_MS  = 20000 / NUMBER_OF_SAMPLES; /* 1/50Hz is 20ms period */
            static const uint8_t VOLT_M    = 5.1 / 1023;
            static const uint8_t R_LOAD    = 2000.0 / CURRENT_RATIO;

            /**
             * Instanciates a ECS1030 (current sensor) object
             *
             * @param pinNumber number of the data pin
             */
            ECS1030 (uint8_t pinNumber);

            /**
             * ECS1030 object destructor, basicaly it close the GPIO.
             */
            ~ECS1030 ();

            /**
             * Return currency data for the sampled period
             */
            double getCurrency_A ();

            /**
             * Return power data for the sampled period
             */
            double getPower_A ();

            /**
             * Return currency data for the sampled period
             */
            double getCurrency_B ();

            /**
             * Return power data for the sampled period
             */
            double getPower_B ();

            /**
             * Return name of the component
             */
            std::string name() {
                return m_name;
            }
        private:
            std::string         m_name;
            mraa_aio_context    m_dataPinCtx;

            double              m_calibration;
            int                 m_lastSample;
            double              m_lastFilter;
            int                 m_sample;
            double              m_filteredSample;
    };
}