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/*
* 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.
*/
#include <iostream>
#include <unistd.h>
#include <stdlib.h>
#include <string>
#include <stdexcept>
#include "ecs1030.hpp"
using namespace upm;
ECS1030::ECS1030 (uint8_t pinNumber) {
m_dataPinCtx = mraa_aio_init(pinNumber);
if (m_dataPinCtx == NULL) {
throw std::invalid_argument(std::string(__FUNCTION__) +
": mraa_aio_init() failed");
}
m_calibration = 111.1;
}
ECS1030::~ECS1030 () {
mraa_result_t error = MRAA_SUCCESS;
error = mraa_aio_close (m_dataPinCtx);
if (error != MRAA_SUCCESS) {
}
}
double
ECS1030::getCurrency_A () {
int sensorValue = 0;
float rLoad = 0;
float volt = 0;
float rms = 0;
for (int i = 0; i < NUMBER_OF_SAMPLES; i++) {
sensorValue = mraa_aio_read (m_dataPinCtx);
if (sensorValue == -1) throw std::runtime_error(std::string(__FUNCTION__) +
": Failed to do an aio read.");
volt = (VOLT_M * sensorValue) - 2.5;
volt = volt * volt;
rms = rms + volt;
usleep (DELAY_MS);
}
rms = rms / (float)NUMBER_OF_SAMPLES;
rms = sqrt(rms);
return rms / R_LOAD;
}
double
ECS1030::getCurrency_B () {
double sumCurrency = 0;
for (int i = 0; i < NUMBER_OF_SAMPLES; i++) {
m_lastSample = m_sample;
m_sample = mraa_aio_read (m_dataPinCtx);
if (m_sample == -1) throw std::runtime_error(std::string(__FUNCTION__) +
": Failed to do an aio read.");
m_lastFilter = m_filteredSample;
m_filteredSample = 0.996 * (m_lastFilter + m_sample - m_lastSample);
sumCurrency += (m_filteredSample * m_filteredSample);
}
double ratio = m_calibration * ((SUPPLYVOLTAGE / 1000.0) / (ADC_RESOLUTION));
return ( ratio * sqrt(sumCurrency / NUMBER_OF_SAMPLES) );
}
double
ECS1030::getPower_A () {
return 220.0 * getCurrency_A ();
}
double
ECS1030::getPower_B () {
return 220.0 * getCurrency_B ();
}
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