com.diozero

Class BMP180

java.lang.Object

com.diozero.BMP180

All Implemented Interfaces:

BarometerInterface, ThermometerInterface, Closeable, AutoCloseable

public class BMP180
extends Object
implements ThermometerInterface, BarometerInterface, Closeable

Bosch BMP180 I2C temperature and pressure sensor

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	BMP180.BMPMode Relationship between sampling mode and conversion delay (in ms) for each sampling mode Ultra low power: 4.5 ms minimum conversion delay Standard: 7.5 ms High Resolution: 13.5 ms Ultra high Resolution: 25.5 ms

Constructor Summary

Constructors

Constructor and Description
BMP180(BMP180.BMPMode mode) Constructor
BMP180(int controllerNumber, int clockFrequency, BMP180.BMPMode mode)

Method Summary

Modifier and Type	Method and Description
void	close()
float	getPressure() Read the barometric pressure (in hPa) from the device.
float	getTemperature() Method for reading the temperature.
void	readCalibrationData() This method reads the calibration data common for the Temperature sensor and Barometer sensor included in the BMP180

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

BMP180

public BMP180(BMP180.BMPMode mode)
       throws RuntimeIOException

Constructor

Parameters:

mode - BMP180 operating mode (low power .. ultra-high resolution)

Throws:

RuntimeIOException - if an I/O error occurs

BMP180

public BMP180(int controllerNumber,
              int clockFrequency,
              BMP180.BMPMode mode)
       throws RuntimeIOException

Throws:

RuntimeIOException

Method Detail

readCalibrationData

public void readCalibrationData()
                         throws RuntimeIOException

This method reads the calibration data common for the Temperature sensor and Barometer sensor included in the BMP180

Throws:

RuntimeIOException - if an I/O error occurs

getTemperature

public float getTemperature()
                     throws RuntimeIOException

Method for reading the temperature. Remember the sensor will provide us with raw data, and we need to transform in some analysed value to make sense. All the calculations are normally provided by the manufacturer. In our case we use the calibration data collected at construction time.

Specified by:

getTemperature in interface ThermometerInterface

Returns:

Temperature in Celsius as a double

Throws:

RuntimeIOException - If there is an IO error reading the sensor

getPressure

public float getPressure()
                  throws RuntimeIOException

Read the barometric pressure (in hPa) from the device.

Specified by:

getPressure in interface BarometerInterface

Returns:

Pressure measurement in hPa

Throws:

RuntimeIOException - if an IO error occurs

close

public void close()

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable