Package jmri.jmrix.oaktree

Class SerialNode

java.lang.Object

jmri.jmrix.AbstractNode

jmri.jmrix.oaktree.SerialNode

public class SerialNode
extends AbstractNode

Models a serial node.

Nodes are numbered ala their address, from 0 to 255. Node number 1 carries sensors 1 to 999, node 2 carries 1001 to 1999 etc.

The array of sensor states is used to update sensor known state only when there's a change on the serial bus. This allows for the sensor state to be updated within the program, keeping this updated state until the next change on the serial bus. E.g. you can manually change a state via an icon, and not have it change back the next time that node is polled.

Field Summary

Fields

Modifier and Type	Field	Description
(package private) OakTreeSystemConnectionMemo	_memo
protected boolean	hasActiveSensors
(package private) static final int[]	inputBytes
static final int	IO24
static final int	IO48
protected int	lastUsedSensor
(package private) static final int	MAXSENSORS	Maximum number of sensors a node can carry.
protected int	nodeType
static final int	O48
protected byte[]	outputArray
protected boolean[]	outputByteChanged
(package private) static final int[]	outputBytes
protected Sensor[]	sensorArray
protected int[]	sensorLastSetting
protected int[]	sensorTempSetting
(package private) int	timeout
(package private) boolean	warned

Fields inherited from class jmri.jmrix.AbstractNode

nodeAddress

Constructor Summary

Constructors

Constructor	Description
SerialNode(int address, int type, OakTreeSystemConnectionMemo memo)	Create a new SerialNode and initialize default instance variables
SerialNode(OakTreeSystemConnectionMemo memo)	Create a new SerialNode without a name supplied.

Method Summary

Modifier and Type	Method	Description
protected boolean	checkNodeAddress(int address)	Check for valid node address.
AbstractMRMessage	createInitPacket()	Create an Initialization packet (SerialMessage) for this node.
AbstractMRMessage	createOutPacket()	Create an Transmit packet (SerialMessage).
static String[]	getBoardNames()
int	getNodeType()	Get Node type.
boolean	getSensorsActive()	Get state of Sensors.
boolean	handleTimeout(AbstractMRMessage m, AbstractMRListener l)	Deal with a timeout in the transmission controller.
void	markChanges(SerialReply l)	Use the contents of the poll reply to mark changes.
void	registerSensor(Sensor s, int i)	The numbers here are 0 to MAXSENSORS, not 1 to MAXSENSORS.
void	resetMustSend()	Reset state of needSend flag.
void	resetTimeout(AbstractMRMessage m)	A reply was received, so there was no timeout, do any needed processing.
void	setNodeType(int type)	Set Node type.
void	setOutputBit(int bitNumber, boolean state)	Set an output bit.
(package private) void	warn(String s)

Methods inherited from class jmri.jmrix.AbstractNode

getNodeAddress, mustSend, setMustSend, setNodeAddress

Methods inherited from class java.lang.Object

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

Field Details

MAXSENSORS

static final int MAXSENSORS

Maximum number of sensors a node can carry.

Note this is less than a current SUSIC motherboard can have, but should be sufficient for all reasonable layouts.

Must be less than, and is general one less than, SerialSensorManager.SENSORSPERNODE

See Also:

• Constant Field Values

IO24

public static final int IO24

See Also:

• Constant Field Values

IO48

public static final int IO48

See Also:

• Constant Field Values

O48

public static final int O48

See Also:

• Constant Field Values

outputBytes

static final int[] outputBytes

inputBytes

static final int[] inputBytes

nodeType

protected int nodeType

outputArray

protected byte[] outputArray

outputByteChanged

protected boolean[] outputByteChanged

hasActiveSensors

protected boolean hasActiveSensors

lastUsedSensor

protected int lastUsedSensor

sensorArray

protected Sensor[] sensorArray

sensorLastSetting

protected int[] sensorLastSetting

sensorTempSetting

protected int[] sensorTempSetting

_memo

OakTreeSystemConnectionMemo _memo

warned

boolean warned

timeout

int timeout

Constructor Details

SerialNode

public SerialNode(OakTreeSystemConnectionMemo memo)

Create a new SerialNode without a name supplied.

Assumes a node address of 0, and a node type of 0 (IO24). If this constructor is used, actual node address must be set using setNodeAddress, and actual node type using 'setNodeType'

Parameters:

memo - system connection.

SerialNode

public SerialNode(int address,
 int type,
 OakTreeSystemConnectionMemo memo)

Create a new SerialNode and initialize default instance variables

Parameters:

address - Address of node on serial bus (0-255).

type - type constant from the class.

memo - system connection.

Method Details

getBoardNames

public static String[] getBoardNames()

setOutputBit

public void setOutputBit(int bitNumber,
 boolean state)

Set an output bit.

Parameters:

bitNumber - bit id, numbered from 1 (not 0)

state - 'true' for 0, 'false' for 1

getSensorsActive

public boolean getSensorsActive()

Get state of Sensors.

Specified by:

getSensorsActive in class AbstractNode

Returns:

'true' if at least one sensor is active for this node

resetMustSend

public void resetMustSend()

Reset state of needSend flag. Can only reset if there are no bytes that need to be sent

Overrides:

resetMustSend in class AbstractNode

getNodeType

public int getNodeType()

Get Node type.

Current types are: IO24, I048, O48.

Returns:

node type.

setNodeType

public void setNodeType(int type)

Set Node type.

Parameters:

type - node type e.g. IO48 , IO24

checkNodeAddress

protected boolean checkNodeAddress(int address)

Check for valid node address.

Specified by:

checkNodeAddress in class AbstractNode

Parameters:

address - node number to check.

Returns:

true if valid

createInitPacket

public AbstractMRMessage createInitPacket()

Create an Initialization packet (SerialMessage) for this node. There are currently no Oak Tree boards that need an init message, so this returns null.

Specified by:

createInitPacket in class AbstractNode

Returns:

the packet, or 'null' if not needed

createOutPacket

public AbstractMRMessage createOutPacket()

Create an Transmit packet (SerialMessage).

Specified by:

createOutPacket in class AbstractNode

Returns:

packet to send current node state.

warn

void warn(String s)

markChanges

public void markChanges(SerialReply l)

Use the contents of the poll reply to mark changes.

Parameters:

l - Reply to a poll operation

registerSensor

public void registerSensor(Sensor s,
 int i)

The numbers here are 0 to MAXSENSORS, not 1 to MAXSENSORS.

Parameters:

s - sensor object

i - number of sensor's input bit on this node (0 to MAXSENSORS)

handleTimeout

public boolean handleTimeout(AbstractMRMessage m,
 AbstractMRListener l)

Deal with a timeout in the transmission controller.

Specified by:

handleTimeout in class AbstractNode

Parameters:

m - message that didn't receive a reply

l - listener that sent the message

Returns:

true if initialization is required

resetTimeout

public void resetTimeout(AbstractMRMessage m)

Description copied from class: AbstractNode

A reply was received, so there was no timeout, do any needed processing.

Specified by:

resetTimeout in class AbstractNode

Parameters:

m - message received that has reset the timeout and is waiting to be handled