com.oracle.deviceaccess.gpio

Class GPIOPortConfig

java.lang.Object

com.oracle.deviceaccess.gpio.GPIOPortConfig

All Implemented Interfaces:

PeripheralConfig

public final class GPIOPortConfig
extends java.lang.Object
implements PeripheralConfig

The GPIOPortConfig class encapsulates the hardware addressing information, and static and dynamic configuration parameters of a GPIO port.

Some hardware addressing parameter, and static and dynamic configuration parameters may be set to PeripheralConfig.DEFAULT. Whether such default settings are supported is platform- as well as peripheral driver-dependent.

An instance of GPIOPortConfig can be passed to the PeripheralManager.open(PeripheralConfig) or PeripheralManager.open(Class, PeripheralConfig) method to open the designated GPIO port with the specified configuration. A PeripheralConfigInvalidException is thrown when attempting to open a peripheral device with an invalid or unsupported configuration.

Note that the interrupt trigger of a GPIO port is defined by the interrupt trigger(s) configured for its pins (see GPIOPinConfig.getTrigger()).

See Also:

PeripheralManager.open(PeripheralConfig), PeripheralManager.open(Class, PeripheralConfig)

Field Summary

Fields

Modifier and Type	Field and Description
static int	DIR_BOTH_INIT_INPUT Bidirectional port direction with initial input direction.
static int	DIR_BOTH_INIT_OUTPUT Bidirectional port direction with initial output direction.
static int	DIR_INPUT_ONLY Input port direction.
static int	DIR_OUTPUT_ONLY Output port direction.

Fields inherited from interface com.oracle.deviceaccess.PeripheralConfig

DEFAULT

Constructor Summary

Constructors

Constructor and Description
GPIOPortConfig(int direction, int initValue, GPIOPinConfig[] pins) Creates a new GPIOPortConfig with the specified hardware addressing information and configuration parameters.

Method Summary

Methods

Modifier and Type	Method and Description
int	getDirection() Gets the configured port direction.
int	getInitValue() Gets the configured default/initial value of the port, if configured for output.
GPIOPinConfig[]	getPins() Gets the configured pins composing the port (in the exact same order they compose the port).

Methods inherited from class java.lang.Object

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

Field Detail

DIR_BOTH_INIT_INPUT

public static final int DIR_BOTH_INIT_INPUT

Bidirectional port direction with initial input direction.

See Also:

Constant Field Values

DIR_BOTH_INIT_OUTPUT

public static final int DIR_BOTH_INIT_OUTPUT

Bidirectional port direction with initial output direction.

See Also:

Constant Field Values

DIR_INPUT_ONLY

public static final int DIR_INPUT_ONLY

Input port direction.

See Also:

Constant Field Values

DIR_OUTPUT_ONLY

public static final int DIR_OUTPUT_ONLY

Output port direction.

See Also:

Constant Field Values

Constructor Detail

GPIOPortConfig

public GPIOPortConfig(int direction,
              int initValue,
              GPIOPinConfig[] pins)

Creates a new GPIOPortConfig with the specified hardware addressing information and configuration parameters.

Parameters:

direction - the allowed and initial direction of the port, one of: DIR_INPUT_ONLY, DIR_OUTPUT_ONLY, DIR_BOTH_INIT_INPUT, DIR_BOTH_INIT_OUTPUT.

initValue - the initial value of the port when initially set for output.

pins - the pin configurations in the exact same order they compose the port.

Throws:

java.lang.IllegalArgumentException - if any of the following is true:

• direction is not one of the defined values;
• pins.length is 0;
• if any of the provided pin configuration does not support the specified direction.

java.lang.NullPointerException - if pins is null.

Method Detail

getDirection

public int getDirection()

Gets the configured port direction.

Returns:

the port direction, one of: DIR_INPUT_ONLY, DIR_OUTPUT_ONLY, DIR_BOTH_INIT_INPUT, DIR_BOTH_INIT_OUTPUT.

getInitValue

public int getInitValue()

Gets the configured default/initial value of the port, if configured for output.

Returns:

the port's default/initial output value.

getPins

public GPIOPinConfig[] getPins()

Gets the configured pins composing the port (in the exact same order they compose the port).

Returns:

the pins composing the port (a defensive copy is returned).