Device driver implementation for the SHT2x humidity and temperature humidity sensor. More...

Detailed Description

Device driver implementation for the SHT2x humidity and temperature humidity sensor.

Author: Kees Bakker kees@.nosp@m.soda.nosp@m.q.com; George Psimenos gp7g1.nosp@m.4@so.nosp@m.ton.a.nosp@m.c.uk; Steffen Robertz steff.nosp@m.en.r.nosp@m.obert.nosp@m.z@rw.nosp@m.th-aa.nosp@m.chen.nosp@m..de

Definition in file sht2x.h.

#include <stdint.h>
#include <stdbool.h>
#include "periph/i2c.h"

Include dependency graph for sht2x.h:

This graph shows which files directly or indirectly include this file:

Data Structures
struct	sht2x_params_t
	Device initialization parameters. More...

struct	sht2x_t
	Device descriptor for the SHT2X sensor. More...

Enumerations
enum	{ SHT2X_OK = 0 , SHT2X_ERR_I2C = -1 , SHT2X_ERR_NODEV = -2 , SHT2X_ERR_NOCAL = -3 , SHT2X_ERR_I2C_READ = -4 , SHT2X_ERR_TIMEDOUT = -5 , SHT2X_ERR_CRC = -6 , SHT2X_ERR_USERREG = -7 , SHT2X_ERR_RES = -8 , SHT2X_ERR_OTHER = -999 }
	Status and error return codes. More...

enum	sht2x_res_t { SHT2X_RES_12_14BIT = 0x00 , SHT2X_RES_8_12BIT = 0x01 , SHT2X_RES_10_13BIT = 0x80 , SHT2X_RES_11_11BIT = 0x81 }
	Available resolutions. More...

enum	sht2x_measure_mode_t { SHT2X_MEASURE_MODE_HOLD = 0 , SHT2X_MEASURE_MODE_NO_HOLD = 1 }
	Available Measuring modes. More...

Functions
int	sht2x_init (sht2x_t dev, const sht2x_params_t params)
	Initialize the given SHT2X device.

int	sht2x_reset (sht2x_t *dev)
	Reset the SHT2X device.

int16_t	sht2x_read_temperature (const sht2x_t *dev)
	Read temperature value from the given SHT2X device, returned in centi °C.

uint16_t	sht2x_read_humidity (const sht2x_t *dev)
	Read humidity value from the given SHT2X device, returned in centi RH.

int	sht2x_read_ident (const sht2x_t dev, uint8_t buffer, size_t buflen)
	Read identification code from the given SHT2X device.

int	sht2x_read_userreg (const sht2x_t dev, uint8_t userreg)
	Read User Register from the given SHT2X device.

int	sht2x_write_userreg (const sht2x_t *dev, uint8_t userreg)
	Write User Register to the given SHT2X device.

#define	SHT2X_USER_RESOLUTION_MASK 0x81
	User register masks.

#define	SHT2X_USER_EOB_MASK 0x40

#define	SHT2X_USER_HEATER_MASK 0x04

#define	SHT2X_USER_RESERVED_MASK 0x38

#define	SHT2X_USER_OTP_MASK 0x02

Data Structures