Package com.diozero.sbc

Class BoardInfo

java.lang.Object

com.diozero.sbc.BoardPinInfo

com.diozero.sbc.BoardInfo

Direct Known Subclasses:

GenericLinuxArmBoardInfo, UnknownBoardInfo

public abstract class BoardInfo
extends BoardPinInfo

Information about the connected SBC. Note that the connected board instance might be a remote device, e.g. connected via serial, Bluetooth or TCP/IP. The BoardInfo instance for the connected device must be obtained by calling getBoardInfo() the on the NativeDeviceFactoryInterface instance returned from DeviceFactoryHelper.getNativeDeviceFactory().

Field Summary

Fields

Modifier and Type	Field	Description
static String	UNKNOWN
static float	UNKNOWN_ADC_VREF

Fields inherited from class com.diozero.sbc.BoardPinInfo

ADC_KEY_PREFIX, DAC_KEY_PREFIX, DEFAULT_ADC_NAME_PREFIX, DEFAULT_DAC_NAME_PREFIX, DEFAULT_GPIO_NAME_PREFIX, GPIO_KEY_PREFIX

Constructor Summary

Constructors

Constructor	Description
BoardInfo(String make, String model, int memoryKb, float adcVRef, String libraryPath)
BoardInfo(String make, String model, int memoryKb, String libraryPath)

Method Summary

Modifier and Type	Method	Description
boolean	compareMakeAndModel(String make, String model)	Compare make and model
MmapGpioInterface	createMmapGpio()	Instantiate the memory mapped GPIO interface for this board.
float	getAdcVRef()	Get the Analog to Digital converter reference voltage to be used when taking ADC readings
float	getCpuTemperature()	Utility method to get the CPU temperate of the attached board
Collection<Integer>	getI2CBusNumbers()	Detect the I2C bus controller numbers that are available on this board.
String	getLibraryPath()	Internal diozero method to get the library path prefix to be used when loading native libraries for this device.
String	getLongName()
String	getMake()	The make of the connected board, e.g.
int	getMemoryKb()	Get the memory (in KB) of the connected board
String	getModel()	The model of the connected board, e.g.
String	getName()	Get the name of this board - usual a concatenation of make and model
int	getPwmChip(int pwmNum)	Get the PWM chip for the specified PWM number.
abstract void	populateBoardPinInfo()	Pin initialisation is done separately to the constructor since all known BoardInfo instances get instantiated on startup by the Java ServiceLoader.
String	toString()

Methods inherited from class com.diozero.sbc.BoardPinInfo

addAdcPinInfo, addAdcPinInfo, addAdcPinInfo, addAdcPinInfo, addDacPinInfo, addDacPinInfo, addDacPinInfo, addDacPinInfo, addDacPinInfo, addGeneralPinInfo, addGeneralPinInfo, addGeneralPinInfo, addGeneralPinInfo, addGeneralPinInfo, addGpioPinInfo, addGpioPinInfo, addGpioPinInfo, addGpioPinInfo, addGpioPinInfo, addGpioPinInfo, addGpioPinInfo, addPwmPinInfo, addPwmPinInfo, addPwmPinInfo, addPwmPinInfo, addPwmPinInfo, getAdcPins, getByAdcNumber, getByChipAndLineOffset, getByDacNumber, getByGpioNumber, getByName, getByPwmNumber, getDacPins, getGpioPins, getGpios, getHeaders, getHeaderValues, mapToSysFsGpioNumber

Methods inherited from class java.lang.Object

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

Field Details

UNKNOWN

public static final String UNKNOWN

See Also:

Constant Field Values

UNKNOWN_ADC_VREF

public static final float UNKNOWN_ADC_VREF

See Also:

Constant Field Values

Constructor Details

BoardInfo

public BoardInfo(String make,
String model,
int memoryKb,
String libraryPath)

BoardInfo

public BoardInfo(String make,
String model,
int memoryKb,
float adcVRef,
String libraryPath)

Method Details

populateBoardPinInfo

public abstract void populateBoardPinInfo()

Pin initialisation is done separately to the constructor since all known BoardInfo instances get instantiated on startup by the Java ServiceLoader.

getMake

public String getMake()

The make of the connected board, e.g. "Raspberry Pi"

Returns:

the make of the connected board

getModel

public String getModel()

The model of the connected board, e.g. "3B+"

Returns:

the model of the connected board

getMemoryKb

public int getMemoryKb()

Get the memory (in KB) of the connected board

Returns:

memory in KB

getLibraryPath

public String getLibraryPath()

Internal diozero method to get the library path prefix to be used when loading native libraries for this device.

Returns:

the library path prefix

getAdcVRef

public float getAdcVRef()

Get the Analog to Digital converter reference voltage to be used when taking ADC readings

Returns:

the reference voltage for this board

getName

public String getName()

Get the name of this board - usual a concatenation of make and model

Returns:

the name of this board

getLongName

public String getLongName()

compareMakeAndModel

public boolean compareMakeAndModel(String make,
String model)

Compare make and model

Parameters:

make - the make to compare

model - the model to compare

Returns:

true if the make and model are the same

getPwmChip

public int getPwmChip(int pwmNum)

Get the PWM chip for the specified PWM number. Only actually relevant for sysfs PWM control on the BeagleBone Black.

Parameters:

pwmNum - The sysfs PWM channel number

Returns:

The PWM chip number for the requested PWM channel number, -1 if not found / not relevant

createMmapGpio

public MmapGpioInterface createMmapGpio()

Instantiate the memory mapped GPIO interface for this board. Not that the caller needs to call initialise prior to use.

Returns:

the MMAP GPIO interface implementation for this board, null if there isn't one

getI2CBusNumbers

public Collection<Integer> getI2CBusNumbers()

Detect the I2C bus controller numbers that are available on this board.

Returns:

collection of I2C bus controller numbers

getCpuTemperature

public float getCpuTemperature()

Utility method to get the CPU temperate of the attached board

Returns:

the CPU temperature

toString

public String toString()

Overrides:

toString in class Object