2014-12-04 18:59:29 -07:00
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/*
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* Author: Jon Trulson <jtrulson@ics.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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#pragma once
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#include <string>
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#include <mraa/aio.h>
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namespace upm {
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/**
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2015-04-14 14:16:12 -07:00
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* @brief mq303a Alcohol Sensor library
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* @defgroup mq303a libupm-mq303a
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* @ingroup seeed analog gpio gaseous
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*/
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/**
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2015-04-14 17:51:30 -07:00
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* @library mq303a
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2015-04-14 14:16:12 -07:00
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* @sensor mq303a
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* @comname mq303a Alcohol Sensor
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* @type gaseous
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* @man seeed
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* @web http://www.seeedstudio.com/wiki/Grove_-_Alcohol_Sensor
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* @con analog gpio
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*
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2014-12-04 18:59:29 -07:00
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* @brief C++ API for the MQ303A Alcohol Sensor
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*
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* UPM module for the MQ303A Alcohol Sensor.
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* This sensor needs to be warmed up before stable results are
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* obtained. The higher the value returned from value(),
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* the higher the amount of alcohol that was detected.
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*
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2015-04-14 14:16:12 -07:00
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* @image html mq303a.jpg
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2014-12-04 18:59:29 -07:00
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* @snippet mq303a.cxx Interesting
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*/
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class MQ303A {
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public:
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/**
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* MQ303A sensor constructor
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*
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* @param pin analog pin to use
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* @param heaterPin digital pin mapped to analog pin to use
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*/
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MQ303A(int pin, int heaterPin);
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/**
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* MQ303A Destructor
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*/
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~MQ303A();
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/**
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* Get the alcohol detected from the sensor.
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* The value read from the analog pin is inverted.
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* A higher returned value means a higher amount of alcohol was detected.
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*
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* @return the alcohol reading
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*/
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int value();
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/**
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* Enable the heater.
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*
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* @param enable if true, enable the heater else disable
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*/
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void heaterEnable(bool enable);
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private:
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mraa_aio_context m_aio;
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mraa_gpio_context m_gpio;
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};
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}
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