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101 lines
3.1 KiB
C++
101 lines
3.1 KiB
C++
/*
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* Author: Yevgeniy Kiveisha <yevgeniy.kiveisha@intel.com>
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* Copyright (c) 2014 Intel Corporation.
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include <iostream>
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#include <unistd.h>
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#include <stdlib.h>
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#include <string>
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#include <stdexcept>
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#include "ecs1030.hpp"
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using namespace upm;
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ECS1030::ECS1030 (int pinNumber) {
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m_dataPinCtx = mraa_aio_init(pinNumber);
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if (m_dataPinCtx == NULL) {
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throw std::invalid_argument(std::string(__FUNCTION__) +
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": mraa_aio_init() failed");
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}
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m_calibration = 111.1;
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}
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ECS1030::~ECS1030 () {
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mraa_result_t error = MRAA_SUCCESS;
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error = mraa_aio_close (m_dataPinCtx);
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if (error != MRAA_SUCCESS) {
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}
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}
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double
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ECS1030::getCurrency_A () {
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int sensorValue = 0;
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float volt = 0;
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float rms = 0;
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for (int i = 0; i < NUMBER_OF_SAMPLES; i++) {
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sensorValue = mraa_aio_read (m_dataPinCtx);
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if (sensorValue == -1) throw std::runtime_error(std::string(__FUNCTION__) +
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": Failed to do an aio read.");
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volt = (VOLT_M * sensorValue) - 2.5;
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volt = volt * volt;
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rms = rms + volt;
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usleep (DELAY_MS);
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}
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rms = rms / (float)NUMBER_OF_SAMPLES;
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rms = sqrt(rms);
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return rms / R_LOAD;
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}
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double
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ECS1030::getCurrency_B () {
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double sumCurrency = 0;
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for (int i = 0; i < NUMBER_OF_SAMPLES; i++) {
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m_lastSample = m_sample;
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m_sample = mraa_aio_read (m_dataPinCtx);
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if (m_sample == -1) throw std::runtime_error(std::string(__FUNCTION__) +
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": Failed to do an aio read.");
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m_lastFilter = m_filteredSample;
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m_filteredSample = 0.996 * (m_lastFilter + m_sample - m_lastSample);
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sumCurrency += (m_filteredSample * m_filteredSample);
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}
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double ratio = m_calibration * ((SUPPLYVOLTAGE / 1000.0) / (ADC_RESOLUTION));
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return ( ratio * sqrt(sumCurrency / NUMBER_OF_SAMPLES) );
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}
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double
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ECS1030::getPower_A () {
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return 220.0 * getCurrency_A ();
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}
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double
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ECS1030::getPower_B () {
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return 220.0 * getCurrency_B ();
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}
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