LPS331AP/LPS25HB/LPS22HB Pressure Sensors Driver

Device driver for the LPSXXX pressure sensor family (LPS331AP/LPS25HB/LPS22HB) More...

Detailed Description

Device driver for the LPSXXX pressure sensor family (LPS331AP/LPS25HB/LPS22HB)

This driver provides [S]ensor [A]ctuator [U]ber [L]ayer capabilities.

Note

This driver uses the sensors I2C interface

Topics
	LPS331AP/LPS25HB/LPS22HB/LPS22HH/LPS22CH driver compile configuration

Files
file	lpsxxx.h
file	lpsxxx_internal.h
	Definitions for the LPSXXX family of pressure sensors.
file	lpsxxx_params.h
	Default configuration for LPSXXX family of devices.

Data Structures
struct	lpsxxx_params_t
	Struct holding all parameters needed for device initialization. More...
struct	lpsxxx_t
	Device descriptor for LPSXXX sensors. More...

Macros
#define	LPSXXX_DEFAULT_RATE   (LPSXXX_RATE_25HZ)
	The sensors default output data rate (ODR)

Enumerations
enum	{ LPSXXX_OK , LPSXXX_ERR_NODEV , LPSXXX_ERR_I2C }
	Return codes. More...
enum	lpsxxx_rate_t { LPSXXX_RATE_1HZ = 1 }
	Possible sampling rates for LPS331AP sensors. More...

Functions
int	lpsxxx_init (lpsxxx_t *dev, const lpsxxx_params_t *params)
	Initialize a given LPSXXX pressure sensor.
int	lpsxxx_read_temp (const lpsxxx_t *dev, int16_t *temp)
	Read a temperature value from the given sensor, returned in c°C.
int	lpsxxx_read_pres (const lpsxxx_t *dev, uint16_t *pres)
	Read a pressure value from the given sensor, returned in hPa.
int	lpsxxx_enable (const lpsxxx_t *dev)
	Enable the given sensor.
int	lpsxxx_disable (const lpsxxx_t *dev)
	Disable the given sensor.

Macro Definition Documentation

LPSXXX_DEFAULT_RATE

#define LPSXXX_DEFAULT_RATE   (LPSXXX_RATE_25HZ)

The sensors default output data rate (ODR)

Definition at line 99 of file lpsxxx.h.

Enumeration Type Documentation

anonymous enum

anonymous enum

Return codes.

Enumerator
LPSXXX_OK	Everything was fine.
LPSXXX_ERR_NODEV	No valid device found.
LPSXXX_ERR_I2C	An error occurred on the I2C bus.

Definition at line 59 of file lpsxxx.h.

lpsxxx_rate_t

enum lpsxxx_rate_t

Possible sampling rates for LPS331AP sensors.

Enumerator
LPSXXX_RATE_1HZ	sample with 1Hz

Definition at line 68 of file lpsxxx.h.

Function Documentation

lpsxxx_disable()

int lpsxxx_disable

(

const lpsxxx_t *

dev

)

Disable the given sensor.

Parameters

[in]

dev

device descriptor of sensor to disable

Returns

LPSXXX_OK on success

-LPSXXX_ERR_I2C on I2C error

lpsxxx_enable()

int lpsxxx_enable

(

const lpsxxx_t *

dev

)

Enable the given sensor.

Parameters

[in]

dev

device descriptor of sensor to enable

Returns

LPSXXX_OK on success

-LPSXXX_ERR_I2C on I2C error

lpsxxx_init()

int lpsxxx_init	(	lpsxxx_t *	dev,
		const lpsxxx_params_t *	params )

Initialize a given LPSXXX pressure sensor.

Parameters

[out]	dev	device descriptor of the sensor
[in]	params	initialization parameters

Returns

LPSXXX_OK on success

-LPSXXX_ERR_NODEV if no valid device found

-LPSXXX_ERR_I2C on I2C error

lpsxxx_read_pres()

int lpsxxx_read_pres	(	const lpsxxx_t *	dev,
		uint16_t *	pres )

Read a pressure value from the given sensor, returned in hPa.

Parameters

[in]	dev	device descriptor of sensor to read from
[out]	pres	pressure value in hPa

Returns

LPSXXX_OK on success

-LPSXXX_ERR_I2C on I2C error

lpsxxx_read_temp()

int lpsxxx_read_temp	(	const lpsxxx_t *	dev,
		int16_t *	temp )

Read a temperature value from the given sensor, returned in c°C.

Parameters

[in]	dev	device descriptor of sensor to read from
[out]	temp	temperature value in c°C

Returns

LPSXXX_OK on success

-LPSXXX_ERR_I2C on I2C error