BMP180 Digital pressure sensor

Avr::Bmp180 decodes data from Bosch BMP180 Digital pressure sensors. More...

Collaboration diagram for BMP180 Digital pressure sensor:

Files
file	bmp180.h
	Avr::Bmp180 decodes data from Bosch BMP180 Digital pressure sensors.

Classes
class	Avr::Bmp180
	Decodes data from Bosch BMP180 Digital pressure sensors. More...

Detailed Description

Avr::Bmp180 decodes data from Bosch BMP180 Digital pressure sensors.

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Class Documentation

Avr::Bmp180

class Avr::Bmp180

Decodes data from Bosch BMP180 Digital pressure sensors.

See also

http://ae-bst.resource.bosch.com/media/products/dokumente/bmp180/BST-BMP180-DS000-12~1.pdf

http://wmrx00.sourceforge.net/Arduino/BMP085-Calcs.pdf

Public Types
enum	Mode { Mode::UltraHighResolution, Mode::HighResolution, Mode::Standard, Mode::UltraLowPower }
	Sensor operation mode for reading the barometric pressure. More...
Public Member Functions
	Bmp180 (Mode mode=Mode::Standard)
	Initializes the BMP180 sensor decoder. More...
bool	isValid () const
	Determines if the last sensor access was valid. More...
float	temperature () const
	Retrieves the cached temperature value. More...
float	pressure () const
	Retrieves the cached absolute pressure value. More...
float	pressureAtSeaLevel (float altitude) const
	Retrieves the cached pressure value relative to sea level. More...
bool	read ()
	Reads the temperature and pressure from the sensor and updates the cached values. More...

Member Enumeration Documentation

Mode

enum Avr::Bmp180::Mode

strong

Sensor operation mode for reading the barometric pressure.

Enumerator
UltraHighResolution	Configure sensor to take 8 samples when reading barometric pressure. Highest precision, but slow and with high power consumption.
HighResolution	Configure sensor to take 4 samples when reading barometric pressure.
Standard	Configure sensor to take 2 samples when reading barometric pressure.
UltraLowPower	Configure sensor to take 1 sample when reading barometric pressure. Fast and little power consumption, but relatively inaccurate.

Constructor & Destructor Documentation

Bmp180()

Avr::Bmp180::Bmp180 ( Mode  mode = Mode::Standard )

inline

Initializes the BMP180 sensor decoder.

Parameters

mode	The sensor operation mode.

Member Function Documentation

isValid()

bool Avr::Bmp180::isValid ( ) const

inline

Determines if the last sensor access was valid.

Returns

true if the last sensor access was valid and temperature and barometric pressure can be read, false if an error occurred on the last sensor access.

temperature()

float Avr::Bmp180::temperature ( ) const

inline

Retrieves the cached temperature value.

The temperature value is updated by read.

Returns

The cached temperature value.

pressure()

float Avr::Bmp180::pressure ( ) const

inline

Retrieves the cached absolute pressure value.

The barometric pressure value is updated by read.

Returns

The cached absolute pressure value.

pressureAtSeaLevel()

float Avr::Bmp180::pressureAtSeaLevel ( float  altitude ) const

inline

Retrieves the cached pressure value relative to sea level.

The barometric pressure value is updated by read.

Parameters

altitude

The reference altitude.

Returns

The cached pressure value relative to sea level.

read()

bool Avr::Bmp180::read ( )

inline

Reads the temperature and pressure from the sensor and updates the cached values.

Returns

true if the sensor data could be read, false if an error occurred when accessing the sensor.