DHT Class Reference

Public Member Functions
	DHT (uint8_t pin, uint8_t type=DHT_AUTO, uint16_t minIntervalRead=READ_INTERVAL_DONT_CARE)
void	begin ()
float	readTemperature (bool bFarenheit=false)
float	readHumidity ()
bool	readTempAndHumidity (TempAndHumidity &destReading, bool bFarenheit=false)
ComfortProfile	getComfortProfile ()
void	setComfortProfile (ComfortProfile &c)
bool	isTooHot (float temp=LAST_VALUE, float humidity=LAST_VALUE)
bool	isTooHumid (float temp=LAST_VALUE, float humidity=LAST_VALUE)
bool	isTooCold (float temp=LAST_VALUE, float humidity=LAST_VALUE)
bool	isTooDry (float temp=LAST_VALUE, float humidity=LAST_VALUE)
float	getHeatIndex (float tempCelsius=LAST_VALUE, float percentHumidity=LAST_VALUE, bool bFarenheit=false)
double	getDewPoint (uint8_t algType=DEW_ACCURATE_FAST, float tempCelsius=LAST_VALUE, float percentHumidity=LAST_VALUE, bool bFarenheit=false)
float	getComfortRatio (ComfortState &destComfStatus, float temp=LAST_VALUE, float percentHumidity=LAST_VALUE)
ErrorDHT	getLastError ()

Static Public Member Functions
static float	convertCtoF (float c)
static float	convertFtoC (float f)

Constructor & Destructor Documentation

DHT::DHT ( uint8_t  pin, uint8_t  type = DHT_AUTO, uint16_t  minIntervalRead = READ_INTERVAL_DONT_CARE  )

inline

Constructor.

Parameters

pin	- the GPIO [in number the sensor is hooked up to
type	- the sensor type
minIntervalRead	- The minimum time between reads in ms

Member Function Documentation

void DHT::begin

(

)

Must be called once at startup

float DHT::getComfortRatio	(	ComfortState &	destComfStatus,
		float	temp = LAST_VALUE,
		float	percentHumidity = LAST_VALUE
	)

Get the heuristic COMFORT RATIO (0=unconfortable..100=confortable) based on current comfort profile.

Parameters

tempCelsius	- temp in *C. Default uses the last temp reading. If the reading is old, a read() is triggered This can be disabled with the NO_AUTOREFRESH switch
percentHumidity	- humidity 0..100. Default uses the last humid reading. If the reading is old, a read() is triggered This can be disabled with the NO_AUTOREFRESH switch
destComfStatus	- will receive a comfort classification

double DHT::getDewPoint	(	uint8_t	algType = DEW_ACCURATE_FAST,
		float	tempCelsius = LAST_VALUE,
		float	percentHumidity = LAST_VALUE,
		bool	bFarenheit = false
	)

Get the calculated DEW POINT

Parameters

tempCelsius	- temp in *C. Default uses the last temp reading. If the reading is old, a read() is triggered This can be disabled with the NO_AUTOREFRESH switch
percentHumidity	- humidity 0..100. Default uses the last humid reading. If the reading is old, a read() is triggered This can be disabled with the NO_AUTOREFRESH switch
algType	- Algorithm type to use. See DHT.c for details

float DHT::getHeatIndex	(	float	tempCelsius = LAST_VALUE,
		float	percentHumidity = LAST_VALUE,
		bool	bFarenheit = false
	)

Get the calculated HEAT INDEX

Parameters

tempCelsius	- temp in *C. Default uses the last temp reading. If the reading is old, a read() is triggered This can be disabled with the NO_AUTOREFRESH switch
percentHumidity	- humidity 0..100. Default uses the last humid reading. If the reading is old, a read() is triggered This can be disabled with the NO_AUTOREFRESH switch
bFarenheit	- true if a conversion to Farenheit is desired

ErrorDHT DHT::getLastError ( )

inline

Gets the last occurred error.

float DHT::readHumidity

(

)

Read humidity. Compatible with Adafruit's lib

bool DHT::readTempAndHumidity	(	TempAndHumidity &	destReading,
		bool	bFarenheit = false
	)

Read both temperature and humidity.

Parameters

destReading	- will hold the temp and humidity readings
bFarenheit	- true if a conversion to Farenheit is desired

float DHT::readTemperature

(

bool

bFarenheit = false

)

Read temperature. Compatible with Adafruit's lib(only for DHT_RUNTIME)

Parameters

bFarenheit

- true if a conversion to Farenheit is desired