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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.hpp>
namespace upm {
/**
* @brief Generic loudness sensors
* @defgroup loudness libupm-loudness
* @ingroup dfrobot seeed analog sound
*/
/**
* @library loudness
* @sensor loudness
* @comname Loudness Sensor
* @altname Grove loudness hyld9767
* @type sound
* @man dfrobot seeed
* @web http://www.dfrobot.com/index.php?route=product/product&product_id=83
* @con analog
*
* @brief API for the Loudness Sensor
*
* This sensor family returns an analog voltage proportional to the
* loudness of the ambient environment. It's output does not
* correspond to a particular sound level in decibels. The higher
* the output voltage, the louder the ambient noise level.
*
* This device uses an electret microphone for sound input.
*
* This driver was developed using the DFRobot Loudness Sensor V2
* and the Grove Loudness sensor.
*
* @image html groveloudness.jpg
* @snippet loudness.cxx Interesting
*/
class Loudness {
public:
/**
* Loudness constructor
*
* @param pin Analog pin to use
* @param aref Analog reference voltage; default is 5.0 V
*/
Loudness(int pin, float aref=5.0);
/**
* Loudness destructor
*/
~Loudness();
/**
* Returns the voltage detected on the analog pin
*
* @return The detected voltage
*/
float loudness();
protected:
mraa::Aio m_aio;
private:
float m_aref;
// ADC resolution
int m_aRes;
};
}
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