Adafruit_LPS35HW Class Reference

Class that stores state and functions for interacting with LPS35HW Current and Power Sensor. More...

#include <Adafruit_LPS35HW.h>

Public Member Functions
	Adafruit_LPS35HW ()
	Instantiates a new LPS35HW class.
boolean	begin_I2C (uint8_t i2c_addr=LPS35HW_I2CADDR_DEFAULT, TwoWire *wire=&Wire)
	Sets up the hardware and initializes I2C. More...
boolean	begin_SPI (uint8_t cs_pin, SPIClass *theSPI=&SPI)
	Sets up the hardware and initializes hardware SPI. More...
boolean	begin_SPI (int8_t cs_pin, int8_t sck_pin, int8_t miso_pin, int8_t mosi_pin)
	Sets up the hardware and initializes software SPI. More...
void	reset (void)
	Resets the hardware. All configuration registers are set to default values, the same as a power-on reset.
float	readTemperature (void)
	Reads and scales the current value of the temperature register. More...
float	readPressure (void)
	Reads and scales the value of the pressure register. More...
void	setDataRate (LPS35HW_DataRate new_rate)
	Sets a new measurement rate. More...
void	takeMeasurement (void)
	Takes a new measurement while in one shot mode.
void	zeroPressure (void)
	Sets the reference temperature to the current temperature. Future pressure readings will be relative to it until resetPressure is called.
void	resetPressure (void)
	Resets the reference pressure to zero so calls to getPressure are reported as the absolute value.
void	setThresholdPressure (float threshold_pressure)
	Sets the pressure threshold used by the high and low pressure thresholds. More...
void	enableHighThreshold (void)
	Enables high pressure threshold interrupts.
void	enableLowThreshold (void)
	Disables low pressure threshold interrupts.
bool	highThresholdExceeded (void)
	Returns the current state of the high pressure threshold interrupt. More...
bool	lowThresholdExceeded (void)
	Returns the current state of the low pressure threshold interrupt. More...
void	enableInterrupts (bool active_low=false, bool open_drain=false)
	Enables pressure threshold interrupts. High and low thresholds need to be enabled individually with enableLowThreshold and enableHighThreshold. More...
void	disableInterrupts (void)
	Disables pressure threshold interrupts.
void	enableLowPass (bool extra_low_bandwidth=false)
	Enables the low pass filter with ODR/9 bandwidth. More...

Public Attributes
Adafruit_BusIO_Register *	Config1
	BusIO Register for CONFIG_1.
Adafruit_BusIO_Register *	Config2
	BusIO Register for CONFIG_2.
Adafruit_BusIO_Register *	Config3
	BusIO Register for CONFIG_3.
Adafruit_BusIO_Register *	InterruptCfg
	BusIO Register for INTERRUPT_CFG.
Adafruit_BusIO_Register *	InterruptStatus
	BusIO Register for INTERRUPT_STATUS.

Detailed Description

Class that stores state and functions for interacting with LPS35HW Current and Power Sensor.

Member Function Documentation

begin_I2C()

boolean Adafruit_LPS35HW::begin_I2C	(	uint8_t	i2c_address = LPS35HW_I2CADDR_DEFAULT,
		TwoWire *	wire = &Wire
	)

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.

Returns

True if initialization was successful, otherwise false.

begin_SPI() [1/2]

boolean Adafruit_LPS35HW::begin_SPI	(	uint8_t	cs_pin,
		SPIClass *	theSPI = &SPI
	)

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.

Returns

True if initialization was successful, otherwise false.

begin_SPI() [2/2]

boolean Adafruit_LPS35HW::begin_SPI	(	int8_t	cs_pin,
		int8_t	sck_pin,
		int8_t	miso_pin,
		int8_t	mosi_pin
	)

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

Returns

True if initialization was successful, otherwise false.

readTemperature()

float Adafruit_LPS35HW::readTemperature

(

void

)

Reads and scales the current value of the temperature register.

Returns

The current temperature in degrees C

readPressure()

float Adafruit_LPS35HW::readPressure

(

void

)

Reads and scales the value of the pressure register.

Returns

The current pressure in hPa, relative to the reference temperature

setDataRate()

void Adafruit_LPS35HW::setDataRate

(

LPS35HW_DataRate

new_rate

)

Sets a new measurement rate.

Parameters

new_rate

The new output data rate to be set (ODR)

setThresholdPressure()

void Adafruit_LPS35HW::setThresholdPressure

(

float

threshold_pressure

)

Sets the pressure threshold used by the high and low pressure thresholds.

Parameters

threshold_pressure

The threshold pressure in hPa, measured from zero

highThresholdExceeded()

bool Adafruit_LPS35HW::highThresholdExceeded

(

void

)

Returns the current state of the high pressure threshold interrupt.

Returns

true if the high pressure threshold has been triggered since last checked.

lowThresholdExceeded()

bool Adafruit_LPS35HW::lowThresholdExceeded

(

void

)

Returns the current state of the low pressure threshold interrupt.

Returns

true if the low pressure threshold has been triggered since last checked.

enableInterrupts()

void Adafruit_LPS35HW::enableInterrupts	(	bool	active_low = false,
		bool	open_drain = false
	)

Enables pressure threshold interrupts. High and low thresholds need to be enabled individually with enableLowThreshold and enableHighThreshold.

Parameters

active_low	Polarity of interrupt pin, true for active low.
open_drain	Set to true to have the INT pin be open drain when active.

enableLowPass()

void Adafruit_LPS35HW::enableLowPass

(

bool

extra_low_bandwidth = false

)

Enables the low pass filter with ODR/9 bandwidth.

Parameters

extra_low_bandwidth

Set to true to scale the bandwidth to ODR/20

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

• Adafruit_LPS35HW.h
• Adafruit_LPS35HW.cpp