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/*
* Author: Zion Orent <sorent@ics.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 <time.h>
#include <mraa/aio.h>
namespace upm {
typedef struct
{
int lowPulseOccupancy;
double ratio;
double concentration;
} dustData;
/**
* @brief PPD42NS Dust Sensor library
* @defgroup ppd42ns libupm-ppd42ns
* @ingroup seeed gpio other eak
*/
/**
* @library ppd42ns
* @sensor ppd42ns
* @comname PPD42NS Dust Sensor
* @altname Grove Dust Sensor
* @type other
* @man seeed
* @web http://www.seeedstudio.com/wiki/Grove_-_Dust_Sensor
* @con gpio
* @kit eak
*
* @brief API for the PPD42NS Dust Sensor
*
* UPM module for the PPD42NS dust sensor
*
* @image html ppd42ns.jpg
* @snippet ppd42ns.cxx Interesting
*/
class PPD42NS {
public:
/**
* PPD42NS constructor
*
* @param pin Digital pin to use
*/
PPD42NS(int pin);
/**
* PPD42NS destructor
*/
~PPD42NS();
/**
* Prints dust concentration
*
* @return struct dustData Contains data from the dust sensor
*/
dustData getData();
private:
mraa_gpio_context m_gpio;
/**
* Returns the amount of time it takes a pin to go from HIGH to LOW or from LOW to HIGH
*
* @param highLowValue int Do we measure movements from HIGH to LOW or from LOW to HIGH? highLowValue is the "from" value
*/
double pulseIn_polyfill(bool highLowValue, double endTime);
double m_timediff(timespec time1, timespec time2);
};
}
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