GY65 Class Reference

C++ API for GY65 chip (Atmospheric Pressure Sensor) More...

Detailed Description

This file defines the gy65 C++ interface for libgy65

    uint32_t presure = 0;
    float temperature = 0;
    float altitude = 0;
    uint32_t sealevel = 0;

    sensor = new upm::GY65(0, ADDR);

    while (!doWork) {
        presure = sensor->getPressure ();
        temperature = sensor->getTemperature ();
        altitude = sensor->getAltitude ();
        sealevel = sensor->getSealevelPressure ();

        std::cout << "pressure value = " <<
                    presure <<
                    ", atitude value = " <<
                    altitude <<
                    ", sealevel value = " <<
                    sealevel <<
                    ", temperature = " <<
                    temperature << std::endl;
        usleep (100000);
    }

Public Member Functions
	GY65 (int bus, int devAddr, uint8_t mode=BMP085_ULTRAHIGHRES)
	~GY65 ()
int32_t	getPressure ()
int32_t	getPressureRaw ()
int16_t	getTemperatureRaw ()
float	getTemperature ()
int32_t	getSealevelPressure (float altitudeMeters=0)
float	getAltitude (float sealevelPressure=101325)
int32_t	computeB5 (int32_t UT)
uint16_t	i2cReadReg_16 (int reg)
mraa_result_t	i2cWriteReg (uint8_t reg, uint8_t value)
uint8_t	i2cReadReg_8 (int reg)

Constructor & Destructor Documentation

GY65	(	int	bus,
		int	devAddr,
		uint8_t	mode = BMP085_ULTRAHIGHRES
	)

Instanciates a GY65 object

Parameters

bus	number of used bus
devAddr	address of used i2c device
mode	BMP085 mode

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~GY65

(

)

GY65 object destructor, basicaly it close i2c connection.

Member Function Documentation

int32_t getPressure

(

)

Return calculated pressure

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int32_t getPressureRaw

(

)

Get raw pressure data

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int16_t getTemperatureRaw

(

)

Get raw temperature data from chip

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float getTemperature

(

)

Return calculated temperature

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int32_t getSealevelPressure

(

float

altitudeMeters = 0

)

With given absolute altitude sea level can be calculated

Parameters

altitudeMeters

altitude

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float getAltitude

(

float

sealevelPressure = 101325

)

With given sea level altitude in meters can be calculated

Parameters

sealevelPressure

Sea level

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int32_t computeB5

(

int32_t

UT

)

Calculation of B5 (check spec for more information)

Parameters

UT

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uint16_t i2cReadReg_16

(

int

reg

)

Read two bytes register

Parameters

reg	address of a register

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mraa_result_t i2cWriteReg	(	uint8_t	reg,
		uint8_t	value
	)

Write to one byte register

Parameters

reg	address of a register
value	byte to be written

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uint8_t i2cReadReg_8

(

int

reg

)

Read one byte register

Parameters

reg	address of a register

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

• /var/lib/jenkins/workspace/upm-doc/src/gy65/gy65.h
• /var/lib/jenkins/workspace/upm-doc/src/gy65/gy65.cxx