Grove Air Quality Sensor.
Fork of Grove_Air_Quality_Sensor_Library by
Air_Quality.h
- Committer:
- lucian@192-168-0-101.rdsnet.ro
- Date:
- 2016-12-27
- Revision:
- 4:0ca4a9fd1b5d
- Parent:
- 3:c25365a52d78
- Child:
- 5:7cc7ee583d10
File content as of revision 4:0ca4a9fd1b5d:
/* AirQuality library v1.0 2010 Copyright (c) Seeed Technology Inc. All right reserved. Original Author: Bruce.Qin This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef __AIRQUALITY_H__ #define __AIRQUALITY_H__ #include "mbed.h" #include "mbed_debug.h" #ifndef DEBUG_AIR_QUALITY #define DEBUG_AIR_QUALITY 0 #endif enum air_quality_values { UNKNOWN = -1, VERY_HIGH_POLLUTION = 0, HIGH_POLLUTION = 1, LOW_POLLUTION = 2, NO_POLLUTION = 3 }; class AirQuality { public: uint16_t standard_vol; uint16_t init_voltage; uint16_t first_vol; uint16_t last_vol; AirQuality(); void set_calc_avg_volt_period(uint16_t seconds); void set_sampling_period(uint16_t seconds); void init(PinName pin); air_quality_values slope(void); protected: uint16_t _sampling_period_s; uint16_t _sum_vol; uint16_t _calc_avg_volt_period_s; bool _was_sampled; bool _has_error; private: uint8_t _s; PinName _pin; void calcAvgVoltageFor(uint16_t minutes); }; #endif