Package jmri.jmrix.can

Class AbstractCanTrafficController

java.lang.Object

jmri.jmrix.AbstractMRTrafficController

jmri.jmrix.can.AbstractCanTrafficController

All Implemented Interfaces:

CanInterface

Direct Known Subclasses:

TrafficController

public abstract class AbstractCanTrafficController
extends AbstractMRTrafficController
implements CanInterface

Abstract base for TrafficControllers in a CANbus based Message/Reply protocol.

AbstractMRTrafficController is extended to allow for the translation between CAN messages and the message format of the CAN adapter that connects to the layout.

Nested Class Summary

Nested classes/interfaces inherited from class jmri.jmrix.AbstractMRTrafficController

AbstractMRTrafficController.RcvNotifier, AbstractMRTrafficController.XmtNotifier

Field Summary

Fields inherited from class jmri.jmrix.AbstractMRTrafficController

allowUnexpectedReply, AUTORETRYSTATE, cmdListeners, connectionError, controller, flushReceiveChars, IDLESTATE, istream, listenerQueue, maxRcvExceptionCount, mCurrentMode, mCurrentState, mLastSender, msgQueue, mWaitBeforePoll, NORMALMODE, NOTIFIEDSTATE, OKSENDMSGSTATE, ostream, POLLSTATE, PROGRAMINGMODE, rcvException, rcvThread, replyInDispatch, threadStopRequest, timeoutFlag, timeouts, WAITMSGREPLYSTATE, WAITREPLYINNORMMODESTATE, WAITREPLYINPROGMODESTATE, waitTimePoll, xmtException, xmtRunnable, xmtThread

Constructor Summary

Constructors

Constructor	Description
AbstractCanTrafficController()

Method Summary

Modifier and Type	Method	Description
void	addCanConsoleListener(CanListener l)	Add a CanListener to start of the notification list.
void	addCanListener(CanListener l)
abstract CanReply	decodeFromHardware(AbstractMRReply m)
void	distributeOneReply(CanReply msg, AbstractMRListener mLastSender)
abstract AbstractMRMessage	encodeForHardware(CanMessage m)
protected AbstractMRMessage	enterNormalMode()	Sets the system to normal mode during programming while in IDLESTATE.
protected AbstractMRMessage	enterProgMode()	Set the system to programming mode.
protected void	forwardToPort(AbstractMRMessage m, AbstractMRListener reply)	Actually transmits the next message to the port Overridden to include translation to the correct CAN hardware message format Actually transmit the next message to the port.
void	handleOneIncomingReply()	Handle each reply when complete.
protected abstract AbstractMRMessage	newMessage()	Get the correct concrete class for the hardware connection message
protected AbstractMRMessage	pollMessage()	Invoked if it's appropriate to do low-priority polling of the command station, this should return the next message to send, or null if the TrafficController should just sleep.
protected AbstractMRListener	pollReplyHandler()	Always null
void	removeCanListener(CanListener l)

Methods inherited from class jmri.jmrix.AbstractMRTrafficController

addConsoleListener, addHeaderToOutput, addListener, addTrailerToOutput, canReceive, connectionWarn, connectPort, disconnectPort, distributeReply, endOfMessage, enterProgModeDelayTime, forwardMessage, forwardReply, getLastSender, getPortName, getSynchronizeRx, handleTimeout, hasTimeouts, lengthOfByteStream, loadChars, newRcvNotifier, newReply, notifyMessage, notifyReply, portReadyToSend, portWarn, portWarnTCP, programmerIdle, readByteProtected, receiveLoop, recovery, removeListener, reportReceiveLoopException, resetTimeout, sendMessage, setAllowUnexpectedReply, setSynchronizeRx, status, terminate, terminateThreads, transmitLoop, transmitWait, unexpectedReplyStateError, waitForStartOfReply, warnOnTimeout

Methods inherited from class java.lang.Object

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

Methods inherited from interface jmri.jmrix.can.CanInterface

sendCanMessage, sendCanReply, status

Constructor Details

AbstractCanTrafficController

public AbstractCanTrafficController()

Method Details

addCanListener

public void addCanListener(CanListener l)

Specified by:

addCanListener in interface CanInterface

addCanConsoleListener

public void addCanConsoleListener(CanListener l)

Add a CanListener to start of the notification list. This is intended only for Consoles to receive the CanFrame 1st, not after another Listener has sent a response to that Frame.

Parameters:

l - The CanListener to add.

removeCanListener

public void removeCanListener(CanListener l)

Specified by:

removeCanListener in interface CanInterface

forwardToPort

protected void forwardToPort(AbstractMRMessage m,
 AbstractMRListener reply)

Actually transmits the next message to the port Overridden to include translation to the correct CAN hardware message format Actually transmit the next message to the port.

Overrides:

forwardToPort in class AbstractMRTrafficController

Parameters:

m - the message to send

reply - the Listener sending the message, often provided as 'this'

See Also:

• AbstractMRTrafficController.sendMessage(AbstractMRMessage, AbstractMRListener)

pollMessage

protected AbstractMRMessage pollMessage()

Invoked if it's appropriate to do low-priority polling of the command station, this should return the next message to send, or null if the TrafficController should just sleep. Always null

Specified by:

pollMessage in class AbstractMRTrafficController

Returns:

Formatted poll message

pollReplyHandler

protected AbstractMRListener pollReplyHandler()

Always null

Specified by:

pollReplyHandler in class AbstractMRTrafficController

enterProgMode

protected AbstractMRMessage enterProgMode()

Set the system to programming mode. Always null

Specified by:

enterProgMode in class AbstractMRTrafficController

Returns:

any message that needs to be returned to the Command Station to change modes. If no message is needed, returns null.

See Also:

• AbstractMRTrafficController.enterNormalMode()

enterNormalMode

protected AbstractMRMessage enterNormalMode()

Sets the system to normal mode during programming while in IDLESTATE. If AbstractMRTrafficController.programmerIdle() returns true, enterNormalMode() is called after a timeout. Always null

Specified by:

enterNormalMode in class AbstractMRTrafficController

Returns:

any message that needs to be returned to the Command Station to change modes. If no message is needed, returns null.

See Also:

• AbstractMRTrafficController.enterProgMode()

newMessage

protected abstract AbstractMRMessage newMessage()

Get the correct concrete class for the hardware connection message

Returns:

new blank message

decodeFromHardware

public abstract CanReply decodeFromHardware(AbstractMRReply m)

encodeForHardware

public abstract AbstractMRMessage encodeForHardware(CanMessage m)

handleOneIncomingReply

public void handleOneIncomingReply()
                            throws IOException

Handle each reply when complete.

Overridden to include translation form the CAN hardware format

Overrides:

handleOneIncomingReply in class AbstractMRTrafficController

Throws:

IOException - on error.

distributeOneReply

public void distributeOneReply(CanReply msg,
 AbstractMRListener mLastSender)