Device driver interface for the DHT family of humidity and temperature sensors. More...

Detailed Description

Device driver interface for the DHT family of humidity and temperature sensors.

Author: Ludwig Knüpfer <ludwi.nosp@m.g.kn.nosp@m.uepfe.nosp@m.r@fu.nosp@m.-berl.nosp@m.in.d.nosp@m.e; Christian Mehlis mehli.nosp@m.s@in.nosp@m.f.fu-.nosp@m.berl.nosp@m.in.de; Hauke Petersen hauke.nosp@m..pet.nosp@m.ersen.nosp@m.@fu-.nosp@m.berli.nosp@m.n.de

Definition in file dht.h.

#include <errno.h>
#include <stdint.h>
#include "periph/gpio.h"

Include dependency graph for dht.h:

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Data Structures
struct	dht_data_t
	Data type for storing DHT sensor readings. More...

struct	dht_params_t
	Configuration parameters for DHT devices. More...

struct	dht_t
	Device descriptor for DHT sensor devices. More...

Enumerations
enum	{ DHT_OK = 0 , DHT_NOCSUM = -EIO , DHT_TIMEOUT = -ETIMEDOUT }
	Possible return codes. More...

enum	dht_type_t { DHT11 , DHT11_2022 , DHT22 , DHT21 = DHT22 , AM2301 = DHT22 }
	Device type of the DHT device. More...

Functions
int	dht_init (dht_t dev, const dht_params_t params)
	Initialize a new DHT device.

int	dht_read (dht_t dev, int16_t temp, int16_t *hum)
	get a new temperature and/or humidity value from the device

Data Structures