com.sun.spot.peripheral
Class FiqInterruptDaemon

java.lang.Object
  com.sun.spot.peripheral.FiqInterruptDaemon

All Implemented Interfaces:

IDriver, Runnable

public class FiqInterruptDaemon
extends Object
implements Runnable, IDriver

The FiqInterruptDaemon gives access to the handlers used for various notifications from the power controller. A handler that implements IEventHandler can be supplied to handle a specific event, replacing the existing handler (all events have a default handler). Note that the handler is called at MAX_SYS_PRIORITY. Your code should reduce the priority as appropriate.

Constructor Summary

FiqInterruptDaemon(IPowerController powerController)

Method Summary

String	getDriverName() An identifying name for the driver (e.g.
void	run() When an object implementing interface Runnable is used to create a thread, starting the thread causes the object's run method to be called in that separately executing thread.
IEventHandler	setAlarmHandler(IEventHandler handler) Replace the existing handler for power controller time alarms with a user-supplied handler.
IEventHandler	setButtonHandler(IEventHandler handler) Replace the existing handler for reset button presses with a user-supplied handler.
IEventHandler	setLowBatteryHandler(IEventHandler handler) Replace the existing handler for low battery warnings with a user-supplied handler.
IEventHandler	setPowerOffHandler(IEventHandler handler) Replace the existing handler for poweroff with a user-supplied handler.
void	setUp() Activate or reactivate the driver (after a deep sleep or when another driver refused to deep sleep).
void	shutDown() Notify the driver that the VM is about to exit.
void	startThreads()
boolean	tearDown() Deactivate the driver (usually in preparation for deep sleep).

Methods inherited from class java.lang.Object

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

Constructor Detail

FiqInterruptDaemon

public FiqInterruptDaemon(IPowerController powerController)

Method Detail

startThreads

public void startThreads()

run

public void run()

Description copied from interface: Runnable

When an object implementing interface Runnable is used to create a thread, starting the thread causes the object's run method to be called in that separately executing thread.

The general contract of the method run is that it may take any action whatsoever.

Specified by:

run in interface Runnable

See Also:

Thread.run()

setAlarmHandler

public IEventHandler setAlarmHandler(IEventHandler handler)

Replace the existing handler for power controller time alarms with a user-supplied handler. It is very unlikely that you will want to create a handler for time alarms. The default handler logs a message if spot.diagnostics is set. The previous handler is returned, so you can chain your new handler to that one.

Parameters:

handler - the new handler to use

Returns:

the previous handler

setButtonHandler

public IEventHandler setButtonHandler(IEventHandler handler)

Replace the existing handler for reset button presses with a user-supplied handler. The default handler calls VM.stopVM(0). The previous handler is returned, so you can chain your new handler to that one.

Parameters:

handler - the new handler to use

Returns:

the previous handler

setPowerOffHandler

public IEventHandler setPowerOffHandler(IEventHandler handler)

Replace the existing handler for poweroff with a user-supplied handler. The power off event occurs when the user uses the reset button to turn off the SPOT. The handler has about 400ms to do work before the power goes away. The default handler does nothing. The previous handler is returned, so you can chain your new handler to that one.

Parameters:

handler - the new handler to use

Returns:

the previous handler

setLowBatteryHandler

public IEventHandler setLowBatteryHandler(IEventHandler handler)

Replace the existing handler for low battery warnings with a user-supplied handler. The default handler logs a message if spot.diagnostics is set. The previous handler is returned, so you can chain your new handler to that one.

Parameters:

handler - the new handler to use

Returns:

the previous handler

getDriverName

public String getDriverName()

Description copied from interface: IDriver

An identifying name for the driver (e.g. "AIC" for the AIC driver).

Specified by:

getDriverName in interface IDriver

Returns:

The driver name

setUp

public void setUp()

Description copied from interface: IDriver

Activate or reactivate the driver (after a deep sleep or when another driver refused to deep sleep). The driver should claim all the resources it needs from other drivers and reinitialize its hardware. It should also restore any state saved before tearDown.

Drivers are set up in the order that they registered, so that in general user drivers will be set up after any underlying system drivers.

Specified by:

setUp in interface IDriver

shutDown

public void shutDown()

Description copied from interface: IDriver

Notify the driver that the VM is about to exit.

Specified by:

shutDown in interface IDriver

tearDown

public boolean tearDown()

Description copied from interface: IDriver

Deactivate the driver (usually in preparation for deep sleep). The driver should store any important state and release all resources it has claimed from other drivers.

Drivers are torn down in the inverse order to that in which they registered, so that in general user drivers will be torn down before any underlying system drivers.

Specified by:

tearDown in interface IDriver

Returns:

True if the driver is able to deactivate, false if it cannot deactivate (e.g. due to being busy with a data transfer). If any driver returns false, no deep sleep occurs and all other drivers will be reactivated.