Class that stores state and functions for interacting with the LPS2X I2C Barometric Pressure & Temperature Sensor. More...

#include <Adafruit_LPS2X.h>

Inheritance diagram for Adafruit_LPS2X:

Public Member Functions
	Adafruit_LPS2X ()
	Construct a new Adafruit_LPS2X::Adafruit_LPS2X object.

bool	begin_I2C (uint8_t i2c_addr=LPS2X_I2CADDR_DEFAULT, TwoWire *wire=&Wire, int32_t sensor_id=0)
	Sets up the hardware and initializes I2C. More...

bool	begin_SPI (uint8_t cs_pin, SPIClass *theSPI=&SPI, int32_t sensor_id=0)
	Sets up the hardware and initializes hardware SPI. More...

bool	begin_SPI (int8_t cs_pin, int8_t sck_pin, int8_t miso_pin, int8_t mosi_pin, int32_t sensor_id=0)
	Sets up the hardware and initializes software SPI. More...

void	setPresThreshold (uint16_t hPa_delta)
	Set the pressure threshold register for interrupt levels. More...

bool	getEvent (sensors_event_t pressure, sensors_event_t temp)
	Gets the pressure sensor and temperature values as sensor events. More...

void	reset (void)
	Performs a software reset initializing registers to their power on state.

Adafruit_Sensor *	getTemperatureSensor (void)
	Gets an Adafruit Unified Sensor object for the temp sensor component. More...

Adafruit_Sensor *	getPressureSensor (void)
	Gets an Adafruit Unified Sensor object for the presure sensor component. More...

Protected Member Functions
virtual bool	_init (int32_t sensor_id)=0
	The subclasses' hardware initialization function. More...

void	_read (void)
	Updates the measurement data for all sensors simultaneously.

Protected Attributes
float	_temp
	Last reading's temperature (C)

float	_pressure
	Last reading's pressure (hPa)

uint16_t	_sensorid_pressure
	ID number for pressure.

uint16_t	_sensorid_temp
	ID number for temperature.

float	temp_scaling = 1
	Different chips have different scalings.

float	temp_offset = 1
	Different chips have different offsets.

uint8_t	inc_spi_flag
	If this chip has a bitflag for incrementing SPI registers. More...

bool	isOneShot = false
	true if data rate is one-shot

Adafruit_I2CDevice *	i2c_dev = NULL
	Pointer to I2C bus interface.

Adafruit_SPIDevice *	spi_dev = NULL
	Pointer to SPI bus interface.

Adafruit_LPS2X_Temp *	temp_sensor = NULL
	Temp sensor data object.

Adafruit_LPS2X_Pressure *	pressure_sensor
	Pressure sensor data object. More...

Adafruit_BusIO_Register *	ctrl1_reg = NULL
	The first control register.

Adafruit_BusIO_Register *	ctrl2_reg = NULL
	The second control register.

Adafruit_BusIO_Register *	ctrl3_reg = NULL
	The third control register.

Adafruit_BusIO_Register *	threshp_reg = NULL
	Pressure threshold.

Friends
class	Adafruit_LPS2X_Temp

class	Adafruit_LPS2X_Pressure

Detailed Description

Class that stores state and functions for interacting with the LPS2X I2C Barometric Pressure & Temperature Sensor.

Member Function Documentation

◆ begin_I2C()

bool Adafruit_LPS2X::begin_I2C	(	uint8_t	i2c_address = `LPS2X_I2CADDR_DEFAULT`,
		TwoWire *	wire = `&Wire`,
		int32_t	sensor_id = `0`
	)

Sets up the hardware and initializes I2C.

Parameters

i2c_address	The I2C address to be used.
wire	The Wire object to be used for I2C connections.
sensor_id	The unique ID to differentiate the sensors from others

Returns: True if initialization was successful, otherwise false.

◆ begin_SPI() [1/2]

bool Adafruit_LPS2X::begin_SPI	(	uint8_t	cs_pin,
		SPIClass *	theSPI = `&SPI`,
		int32_t	sensor_id = `0`
	)

Sets up the hardware and initializes hardware SPI.

Parameters

cs_pin	The arduino pin # connected to chip select
theSPI	The SPI object to be used for SPI connections.
sensor_id	The user-defined ID to differentiate different sensors

Returns: True if initialization was successful, otherwise false.

◆ begin_SPI() [2/2]

bool Adafruit_LPS2X::begin_SPI	(	int8_t	cs_pin,
		int8_t	sck_pin,
		int8_t	miso_pin,
		int8_t	mosi_pin,
		int32_t	sensor_id = `0`
	)

Sets up the hardware and initializes software SPI.

Parameters

cs_pin	The arduino pin # connected to chip select
sck_pin	The arduino pin # connected to SPI clock
miso_pin	The arduino pin # connected to SPI MISO
mosi_pin	The arduino pin # connected to SPI MOSI
sensor_id	The user-defined ID to differentiate different sensors

Returns: True if initialization was successful, otherwise false.

◆ setPresThreshold()

void Adafruit_LPS2X::setPresThreshold ( uint16_t hPa_delta )

Set the pressure threshold register for interrupt levels.

Parameters

hPa_delta The u16 that will be written to the register, check the datasheet for more info on the format of this value!

◆ getEvent()

bool Adafruit_LPS2X::getEvent	(	sensors_event_t *	pressure,
		sensors_event_t *	temp
	)

Gets the pressure sensor and temperature values as sensor events.

Parameters

pressure	Sensor event object that will be populated with pressure data
temp	Sensor event object that will be populated with temp data

Returns: True

◆ getTemperatureSensor()

Adafruit_Sensor * Adafruit_LPS2X::getTemperatureSensor ( void )

Gets an Adafruit Unified Sensor object for the temp sensor component.

Returns: Adafruit_Sensor pointer to temperature sensor

◆ getPressureSensor()

Adafruit_Sensor * Adafruit_LPS2X::getPressureSensor ( void )

Gets an Adafruit Unified Sensor object for the presure sensor component.

Returns: Adafruit_Sensor pointer to pressure sensor

◆ _init()

virtual bool Adafruit_LPS2X::_init ( int32_t sensor_id )

protectedpure virtual

The subclasses' hardware initialization function.

!

Parameters

sensor_id The unique sensor id we want to assign it

Returns: True on success, false if something went wrong!

Implemented in Adafruit_LPS22, and Adafruit_LPS25.

Friends And Related Function Documentation

◆ Adafruit_LPS2X_Temp

friend class Adafruit_LPS2X_Temp

friend

Gives access to private members to Temp data object

◆ Adafruit_LPS2X_Pressure

friend class Adafruit_LPS2X_Pressure

friend

Gives access to private members to Pressure data object

Member Data Documentation

◆ inc_spi_flag

uint8_t Adafruit_LPS2X::inc_spi_flag

protected

Initial value:

=

0

If this chip has a bitflag for incrementing SPI registers.

◆ pressure_sensor

Adafruit_LPS2X_Pressure* Adafruit_LPS2X::pressure_sensor

protected

Initial value:

=

NULL

Pressure sensor data object.

The documentation for this class was generated from the following files:

Public Member Functions

Protected Member Functions

Protected Attributes

Friends

Detailed Description

Member Function Documentation

◆ begin_I2C()

◆ begin_SPI() [1/2]

◆ begin_SPI() [2/2]

◆ setPresThreshold()

◆ getEvent()

◆ getTemperatureSensor()

◆ getPressureSensor()

◆ _init()

Friends And Related Function Documentation

◆ Adafruit_LPS2X_Temp

◆ Adafruit_LPS2X_Pressure

Member Data Documentation

◆ inc_spi_flag

◆ pressure_sensor