GpioDriver
public
abstract
class
GpioDriver
extends Gpio
| java.lang.Object | ||
| ↳ | com.google.android.things.pio.Gpio | |
| ↳ | com.google.android.things.pio.GpioDriver | |
Allow users to register GPIO expanders. A GpioDriver must implement all Gpio functions, but additionally this class provides an open() function that will be called whenever a process obtains ownership of the GPIO, to match the existing close() function.
Summary
Inherited constants |
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 From
class
com.google.android.things.pio.Gpio
|
Public constructors | |
|---|---|
GpioDriver()
|
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Public methods | |
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abstract
void
|
close()
Closes the GPIO pin. |
abstract
void
|
open()
Opens the GPIO pin. |
Inherited methods | |
|---|---|
From
class
com.google.android.things.pio.Gpio
| |
From
class
java.lang.Object
| |
From
interface
java.io.Closeable
| |
From
interface
java.lang.AutoCloseable
| |
Public constructors
GpioDriver
</div>
GpioDriver ()
</div>
Public methods
close
</div>
void close ()
Closes the GPIO pin.
This will be called when the GPIO is closed by its owner. Any resources that need to be cleaned up should be done so here.
This method may throw IOException to indicate I/O failure, but the GPIO will still be considered closed and may attempt to be re-opened in the future.</p>
| Throws | |
|---|---|
IOException |
on I/O failure; the driver will still be considered closed. |
</div>
open
</div>
void open ()
Opens the GPIO pin.
This will be called when ownership of a GPIO is obtained. The driver should do any initialization needed to configure the GPIO pin for use here.</p>
| Throws | |
|---|---|
IOException |
on I/O failure; the driver will remain closed. |