Modified
Fork of DHT by
DHT.h
- Committer:
- umairaftab
- Date:
- 2014-03-18
- Revision:
- 1:21dc04090457
- Parent:
- 0:9b5b3200688f
File content as of revision 1:21dc04090457:
#ifndef MBED_DHT_H #define MBED_DHT_H #include "mbed.h" enum eType{ DHT11 = 11, SEN11301P = 11, RHT01 = 11, DHT22 = 22, AM2302 = 22, SEN51035P = 22, RHT02 = 22, RHT03 = 22 } ; enum eError { ERROR_NONE = 0, BUS_BUSY =1, ERROR_NOT_PRESENT =2 , ERROR_ACK_TOO_LONG =3 , ERROR_SYNC_TIMEOUT = 4, ERROR_DATA_TIMEOUT =5 , ERROR_CHECKSUM = 6, ERROR_NO_PATIENCE =7 } ; typedef enum { CELCIUS =0 , FARENHEIT =1, KELVIN=2 } eScale; class DHT { public: DHT(PinName pin,int DHTtype); ~DHT(); int readData(void); float ReadHumidity(void); float ReadTemperature(eScale Scale); float CalcdewPoint(float celsius, float humidity); float CalcdewPointFast(float celsius, float humidity); private: time_t _lastReadTime; float _lastTemperature; float _lastHumidity; PinName _pin; bool _firsttime; int _DHTtype; int DHT_data[6]; float CalcTemperature(); float CalcHumidity(); float ConvertCelciustoFarenheit(float); float ConvertCelciustoKelvin(float); }; #endif