jmri.jmrix.direct
Class TrafficController

java.lang.Object
  jmri.jmrix.direct.TrafficController

All Implemented Interfaces:

CommandStation

public class TrafficController
extends Object
implements CommandStation

Converts Stream-based I/O to/from NMRA packets and controls sending to the direct interface.

This is much simpler than many other "TrafficHandler" classes, because

• It's not handling mode information, or even any information back from the device; it's just sending
• It can work with the direct packets.

This actually bears more similarity to a pure implementation of the CommandStation interface, which is where the real guts of it is. In particular, note that transmission is not a threaded operation.

Author:

Bob Jacobsen Copyright (C) 2001

Field Summary

protected DataInputStream	istream
protected OutputStream	ostream

Constructor Summary

TrafficController()

Method Summary

void	connectPort(AbstractSerialPortController p) Make connection to existing PortController object.
void	disconnectPort(AbstractSerialPortController p) Break connection to existing PortController object.
static TrafficController	instance() static function returning the instance to use.
void	sendPacket(byte[] packet, int repeats) Send a specific packet to the rails.
protected void	setInstance()
boolean	status()

Methods inherited from class java.lang.Object

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

Field Detail

istream

protected DataInputStream istream

ostream

protected OutputStream ostream

Constructor Detail

TrafficController

public TrafficController()

Method Detail

instance

public static TrafficController instance()

static function returning the instance to use.

Returns:

The registered instance for general use, if need be creating one.

setInstance

protected void setInstance()

sendPacket

public void sendPacket(byte[] packet,
                       int repeats)

Send a specific packet to the rails.

Specified by:

sendPacket in interface CommandStation

Parameters:

packet - Byte array representing the packet, including the error-correction byte. Must not be null.

repeats - Number of times to repeat the transmission, but is ignored in the current implementation

status

public boolean status()

connectPort

public void connectPort(AbstractSerialPortController p)

Make connection to existing PortController object.

disconnectPort

public void disconnectPort(AbstractSerialPortController p)

Break connection to existing PortController object. Once broken, attempts to send via "message" member will fail.