Luis Amell / DHT-2

Temp and Humidity sensor device driver. had to fork under a new name, don't know why yet.

Dependents:   Wio-example-SORACOM-Harvest

DHT.h@9:64164cbcbab8, 2020-05-08 (annotated)

Committer:
lamell
Date:
Fri May 08 11:40:25 2020 -0400
Revision:
9:64164cbcbab8
Parent:
8:4a66ebac2a2c 
Really nothing was modified.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
lamell 6:49350e4b126d 1 /*
lamell 6:49350e4b126d 2 * DHT Library for Digital-output Humidity and Temperature sensors
lamell 6:49350e4b126d 3 *
Wimpie 0:9b5b3200688f 4 * Works with DHT11, DHT21, DHT22
Wimpie 0:9b5b3200688f 5 * SEN11301P, Grove - Temperature&Humidity Sensor (Seeed Studio)
Wimpie 0:9b5b3200688f 6 * SEN51035P, Grove - Temperature&Humidity Sensor Pro (Seeed Studio)
lamell 6:49350e4b126d 7 * AM2302 , temperature-humidity sensor
Wimpie 0:9b5b3200688f 8 * RHT01,RHT02, RHT03 , Humidity and Temperature Sensor (Sparkfun)
Wimpie 0:9b5b3200688f 9 *
lamell 6:49350e4b126d 10 * Copyright (C) Luis Amell
lamell 6:49350e4b126d 11 * Based on AM2302/DHT22 sensor library by Wim De Roeve
lamell 6:49350e4b126d 12 * Based on DHT22 sensor library by HO WING KIT
Wimpie 0:9b5b3200688f 13 * Arduino DHT11 library
Wimpie 0:9b5b3200688f 14 *
Wimpie 0:9b5b3200688f 15 * Permission is hereby granted, free of charge, to any person obtaining a copy
Wimpie 0:9b5b3200688f 16 * of this software and associated documnetation files (the "Software"), to deal
Wimpie 0:9b5b3200688f 17 * in the Software without restriction, including without limitation the rights
Wimpie 0:9b5b3200688f 18 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
Wimpie 0:9b5b3200688f 19 * copies of the Software, and to permit persons to whom the Software is
Wimpie 0:9b5b3200688f 20 * furished to do so, subject to the following conditions:
Wimpie 0:9b5b3200688f 21 *
Wimpie 0:9b5b3200688f 22 * The above copyright notice and this permission notice shall be included in
Wimpie 0:9b5b3200688f 23 * all copies or substantial portions of the Software.
Wimpie 0:9b5b3200688f 24 *
Wimpie 0:9b5b3200688f 25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
Wimpie 0:9b5b3200688f 26 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
Wimpie 0:9b5b3200688f 27 * FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
Wimpie 0:9b5b3200688f 28 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
Wimpie 0:9b5b3200688f 29 * LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
Wimpie 0:9b5b3200688f 30 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
Wimpie 0:9b5b3200688f 31 * THE SOFTWARE.
Wimpie 0:9b5b3200688f 32 */
Wimpie 0:9b5b3200688f 33
Wimpie 0:9b5b3200688f 34 #ifndef MBED_DHT_H
Wimpie 0:9b5b3200688f 35 #define MBED_DHT_H
Wimpie 0:9b5b3200688f 36
Wimpie 0:9b5b3200688f 37 #include "mbed.h"
Wimpie 0:9b5b3200688f 38
lamell 6:49350e4b126d 39 enum eType{
lamell 6:49350e4b126d 40 DHT11 = 11,
lamell 6:49350e4b126d 41 SEN11301P = 11,
lamell 6:49350e4b126d 42 RHT01 = 11,
lamell 6:49350e4b126d 43 DHT22 = 22,
lamell 6:49350e4b126d 44 AM2302 = 22,
lamell 6:49350e4b126d 45 SEN51035P = 22,
lamell 6:49350e4b126d 46 RHT02 = 22,
lamell 6:49350e4b126d 47 RHT03 = 22
lamell 6:49350e4b126d 48 } ;
Wimpie 0:9b5b3200688f 49
lamell 6:49350e4b126d 50 enum eError {
Wimpie 0:9b5b3200688f 51 ERROR_NONE = 0,
lamell 6:49350e4b126d 52 BUS_BUSY =1,
lamell 6:49350e4b126d 53 ERROR_NOT_PRESENT =2 ,
lamell 6:49350e4b126d 54 ERROR_ACK_TOO_LONG =3 ,
lamell 6:49350e4b126d 55 ERROR_SYNC_TIMEOUT = 4,
lamell 6:49350e4b126d 56 ERROR_DATA_TIMEOUT =5 ,
lamell 6:49350e4b126d 57 ERROR_CHECKSUM = 6,
lamell 6:49350e4b126d 58 ERROR_NO_PATIENCE =7
lamell 6:49350e4b126d 59 } ;
Wimpie 0:9b5b3200688f 60
lamell 6:49350e4b126d 61 typedef enum {
lamell 6:49350e4b126d 62 CELCIUS =0 ,
lamell 6:49350e4b126d 63 FARENHEIT =1,
lamell 6:49350e4b126d 64 KELVIN=2
lamell 5:28eb2ec7c6d6 65 } eScale;
Wimpie 0:9b5b3200688f 66
Wimpie 0:9b5b3200688f 67
lamell 6:49350e4b126d 68 class DHT {
Wimpie 0:9b5b3200688f 69
Wimpie 0:9b5b3200688f 70 public:
Wimpie 0:9b5b3200688f 71
lamell 6:49350e4b126d 72 DHT(PinName pin,int DHTtype);
Wimpie 0:9b5b3200688f 73 ~DHT();
lamell 6:49350e4b126d 74 int readData(void);
Wimpie 0:9b5b3200688f 75 float ReadHumidity(void);
lamell 6:49350e4b126d 76 float ReadTemperature(eScale Scale);
lamell 6:49350e4b126d 77 float CalcdewPoint(float celsius, float humidity);
lamell 6:49350e4b126d 78 float CalcdewPointFast(float celsius, float humidity);
lamell 8:4a66ebac2a2c 79 int DHT_data[6];
lamell 8:4a66ebac2a2c 80
Wimpie 0:9b5b3200688f 81 private:
Wimpie 0:9b5b3200688f 82 time_t _lastReadTime;
Wimpie 0:9b5b3200688f 83 float _lastTemperature;
Wimpie 0:9b5b3200688f 84 float _lastHumidity;
Wimpie 0:9b5b3200688f 85 PinName _pin;
Wimpie 0:9b5b3200688f 86 bool _firsttime;
lamell 6:49350e4b126d 87 int _DHTtype;
lamell 8:4a66ebac2a2c 88 //int DHT_data[6];
Wimpie 0:9b5b3200688f 89 float CalcTemperature();
Wimpie 0:9b5b3200688f 90 float CalcHumidity();
lamell 6:49350e4b126d 91 float ConvertCelciustoFarenheit(float);
lamell 6:49350e4b126d 92 float ConvertCelciustoKelvin(float);
Wimpie 0:9b5b3200688f 93
Wimpie 0:9b5b3200688f 94 };
Wimpie 0:9b5b3200688f 95
Wimpie 0:9b5b3200688f 96 #endif