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102 lines
3.1 KiB
C++
102 lines
3.1 KiB
C++
/*
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* Author: Sarah Knepper <sarah.knepper@intel.com>
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* Copyright (c) 2015 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/gpio.h>
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namespace upm {
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/**
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* @brief TTP223 touch detector sensor library
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*
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* This touch sensor detects when a finger is near the metallic pad
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* by a change in capacitance. It can replace a more traditional push
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* button. The touch sensor can still function when placed under a
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* non-metallic surface like glass or plastic.
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*
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* @defgroup ttp223 libupm-ttp223
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* @ingroup seeed gpio touch
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*/
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/**
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* @library ttp223
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* @sensor ttp223
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* @comname TTP223 Touch Sensor
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* @altname Grove Touch Sensor
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* @type touch
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* @man seeed
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* @web http://www.seeedstudio.com/depot/Grove-Touch-Sensor-p-747.html
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* @con gpio
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*
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* @brief TTP223 Touch Detector sensor library
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*
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* This touch sensor detects when a finger is near the metallic pad
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* by a change in capacitance. It can replace a more traditional push
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* button. The touch sensor can still function when placed under a
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* non-metallic surface like glass or plastic.
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*
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* @image html ttp223.jpg
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* @snippet ttp223.cxx Interesting
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*/
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class TTP223 {
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public:
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/**
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* TTP223 touch sensor constructor
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*
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* @param pin GPIO pin where sensor is connected
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*/
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TTP223(unsigned int pin);
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/**
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* TTP223 destructor
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*/
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~TTP223();
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/**
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* Return name of this sensor
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*
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* @return the name of this sensor
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*/
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std::string name();
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/**
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* Get value from GPIO pin
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*
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* @return the value from the GPIO pin
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*/
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int value();
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/**
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* Returns whether or not the touch sensor is being touched
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*
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* @return true if the touch sensor is being touched; false otherwise
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*/
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bool isPressed();
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protected:
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std::string m_name; //!< name of this sensor
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mraa_gpio_context m_gpio; //!< GPIO pin
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};
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}
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