BMPX8X Class Reference

API for the GY65/BMP085 and BMP180 Atmospheric Pressure Sensors. More...

Detailed Description

• ID: bmpx8x
• Name: BMP Atmospheric Pressure Sensor
• Other Names: GY65 BMP085 BMP180 BMP183
• Category: pressure
• Manufacturer: seeed adafruit sparkfun
• Connection: i2c

Bosch GY65/BMP085 and BMP180 are high-precision, ultra-low power consumption pressure sensors. They operate in the range of 30,000-110,000 Pa.

This module has been tested on the GY65/BMP085 and BMP180 sensors.

        // Instantiate a BMPX8X sensor on I2C
        upm_bmpx8x.BMPX8X sensor = new upm_bmpx8x.BMPX8X(0);

        // Print the pressure, altitude, sea level, and
        // temperature values every second
        while (true) {
            System.out.println("Pressure: " + sensor.getPressure());
            System.out.println("Altitude: " + sensor.getAltitude());
            System.out.println("Sealevel pressure: "
                    + sensor.getSealevelPressure());
            System.out.println("Temperature: " + sensor.getTemperature());
            System.out.println();

            Thread.sleep(1000);
        }

Public Member Functions
synchronized void	delete ()
	BMPX8X (int bus, int devAddr, short mode)
	BMPX8X (int bus, int devAddr)
	BMPX8X (int bus)
int	getPressure ()
int	getPressureRaw ()
short	getTemperatureRaw ()
float	getTemperature ()
int	getSealevelPressure (float altitudeMeters)
int	getSealevelPressure ()
float	getAltitude (float sealevelPressure)
float	getAltitude ()
int	computeB5 (int UT)
int	i2cReadReg_16 (int reg)
int	i2cWriteReg (short reg, short value)
short	i2cReadReg_8 (int reg)

Constructor & Destructor Documentation

BMPX8X	(	int	bus,
		int	devAddr,
		short	mode
	)

Instantiates a BMPX8X object

Parameters

bus	Number of the used bus
devAddr	Address of the used I2C device
mode	BMP085 mode

Member Function Documentation

int computeB5

(

int

UT

)

Calculates B5 (check the spec for more information)

Parameters

UT

float getAltitude

(

float

sealevelPressure

)

With a given sea level, altitude in meters can be calculated

Parameters

sealevelPressure

Sea level

int getPressure

(

)

BMPX8X object destructor; basically, it closes the I2C connection. ~BMPX8X (); LE: there is no need for the destructor, as the I2C connection will be closed when the m_i2ControlCtx variable will go out of scope (when all the BMPX8X objects will be destroyed) Returns the calculated pressure

int getPressureRaw

(

)

Gets raw pressure data

int getSealevelPressure

(

float

altitudeMeters

)

With a given absolute altitude, sea level can be calculated

Parameters

altitudeMeters

Altitude

float getTemperature

(

)

Returns the calculated temperature

short getTemperatureRaw

(

)

Gets raw temperature data from the sensor

int i2cReadReg_16

(

int

reg

)

Reads a two-byte register

Parameters

reg	Address of the register

short i2cReadReg_8

(

int

reg

)

Reads a one-byte register

Parameters

reg	Address of the register

int i2cWriteReg	(	short	reg,
		short	value
	)

Writes to a one-byte register

Parameters

reg	Address of the register
value	Byte to be written

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

• /var/lib/jenkins/workspace/upm-doc-stable/build-33/src/bmpx8x/BMPX8X.java