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/*
* Author: Jon Trulson <jtrulson@ics.com>
* Copyright (c) 2015 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 <iostream>
#include <string>
#include <mraa/aio.h>
namespace upm {
/**
* @brief GP2Y0A-based IR Proximity Sensor library
* @defgroup gp2y0a libupm-gp2y0a
* @ingroup seeed analog light
*/
/**
* @library gp2y0a
* @sensor gp2y0a
* @comname GP2Y0A IR Proximity Sensor
* @altname Grove 80cm IR Proximity Sensor
* @type light
* @man seeed
* @con analog
*
* @brief API for the GP2Y0A family of IR Proximity Sensors
*
* Sensors of this family return an analog voltage corresponding to the distance
* of an object from the sensor. The voltage is lower when objects
* are far away; the voltage increases as objects get closer
* to the sensor.
*
* @image html gp2y0a.jpg
* @snippet gp2y0a.cxx Interesting
*/
class GP2Y0A {
public:
/**
* GP2Y0A sensor constructor
*
* @param pin Analog pin to use
*/
GP2Y0A(int pin);
/**
* GP2Y0A destructor
*/
~GP2Y0A();
/**
* Gets an average voltage value from the sensor
*
* @param aref Reference voltage in use (usually 5.0V or 3.3V)
* @param samples Number of samples to average over
* @return Average voltage reading
*/
float value(float aref, uint8_t samples);
private:
mraa_aio_context m_aio;
// ADC resolution
int m_aRes;
};
}
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