| /* |
| * 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); |
| }; |
| } |
| |
| |