java.lang.Object
- jmri.jmrix.AbstractNode
- - jmri.jmrix.secsi.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 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
`static int`	`CABDRIVER`
`static int`	`DAUGHTER`
`protected boolean`	`hasActiveSensors`
`(package private) static int[]`	`inputBits`
`protected int`	`lastUsedSensor`
`(package private) static int`	`MAXSENSORS`	Maximum number of sensors a node can carry.
`(package private) static int`	`MAXTURNOUTS`
`protected int`	`nodeType`
`protected boolean[]`	`outputArray`
`protected boolean[]`	`outputBitChanged`
`(package private) static int[]`	`outputBits`
`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, SerialTrafficController _tc)`	Create a new SerialNode and initialize default instance variables.
`SerialNode(SerialTrafficController _tc)`	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'

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
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 a Transmit packet (SerialMessage).
`static java.lang.String[]`	`getBoardNames()`
`int`	`getNodeType()`	Public method to return 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`	`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 on this node.
`(package private) void`	`warn(java.lang.String s)`

Methods inherited from class jmri.jmrix.AbstractNode
getNodeAddress, mustSend, resetMustSend, setMustSend, setNodeAddress

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - 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, SerialSensorManager.SENSORSPERNODE
    
    See Also:
    
    Constant Field Values
  - MAXTURNOUTS
```
static final int MAXTURNOUTS
```
    See Also:
    
    Constant Field Values
  - DAUGHTER
```
public static final int DAUGHTER
```
    See Also:
    
    Constant Field Values
  - CABDRIVER
```
public static final int CABDRIVER
```
    See Also:
    
    Constant Field Values
  - outputBits
```
static final int[] outputBits
```
  - inputBits
```
static final int[] inputBits
```
  - nodeType
```
protected int nodeType
```
  - outputArray
```
protected boolean[] outputArray
```
  - outputBitChanged
```
protected boolean[] outputBitChanged
```
  - hasActiveSensors
```
protected boolean hasActiveSensors
```
  - lastUsedSensor
```
protected int lastUsedSensor
```
  - sensorArray
```
protected Sensor[] sensorArray
```
  - sensorLastSetting
```
protected int[] sensorLastSetting
```
  - sensorTempSetting
```
protected int[] sensorTempSetting
```
  - warned
```
boolean warned
```
  - timeout
```
int timeout
```
- Constructor Detail
  - SerialNode
```
public SerialNode(SerialTrafficController _tc)
```
    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:
    
    _tc - system connection traffic controller.
  - SerialNode
```
public SerialNode(int address,
                  int type,
                  SerialTrafficController _tc)
```
    Create a new SerialNode and initialize default instance variables.
    
    Parameters:
    
    address - address of node on serial bus (0-255)
    
    type - a type constant from the class
    
    _tc - connected TafficController
- Method Detail
  - getBoardNames
```
public static java.lang.String[] getBoardNames()
```
  - setOutputBit
```
public void setOutputBit(int bitNumber,
                         boolean state)
```
    Set an output bit on this node.
    
    Parameters:
    
    bitNumber - the bit on node to set (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
  - getNodeType
```
public int getNodeType()
```
    Public method to return node type. Current types are: DAUGHTER, CABDRIVER
    
    Returns:
    
    node type.
  - setNodeType
```
public void setNodeType(int type)
```
    Set node type.
    
    Parameters:
    
    type - node type, e.g. DAUGHTER or CABDRIVER
  - 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.
    
    Specified by:
    
    createInitPacket in class AbstractNode
    
    Returns:
    
    null as there are currently no SECSI boards that need an init message
  - createOutPacket
```
public AbstractMRMessage createOutPacket()
```
    Create a Transmit packet (SerialMessage).
    
    Specified by:
    
    createOutPacket in class AbstractNode
    
    Returns:
    
    packet to send current node state.
  - warn
```
void warn(java.lang.String s)
```
  - markChanges
```
public void markChanges(SerialReply l)
```
    Use the contents of the poll reply to mark changes. TODO For Secsi Simulator, needs more work to create correct reply.
    
    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)
```
    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

Class SerialNode

Field Summary

Fields inherited from class jmri.jmrix.AbstractNode

Constructor Summary

Method Summary

Methods inherited from class jmri.jmrix.AbstractNode

Methods inherited from class java.lang.Object

Field Detail

MAXSENSORS

MAXTURNOUTS

DAUGHTER

CABDRIVER

outputBits

inputBits

nodeType

outputArray

outputBitChanged

hasActiveSensors

lastUsedSensor

sensorArray

sensorLastSetting

sensorTempSetting

warned

timeout

Constructor Detail

SerialNode

SerialNode

Method Detail

getBoardNames

setOutputBit

getSensorsActive

getNodeType

setNodeType

checkNodeAddress

createInitPacket

createOutPacket

warn

markChanges

registerSensor

handleTimeout

resetTimeout