Package jmri.jmrix.grapevine

Class SerialMessage

java.lang.Object

jmri.jmrix.AbstractMessage

jmri.jmrix.AbstractMRMessage

jmri.jmrix.grapevine.SerialMessage

All Implemented Interfaces:

Message

public class SerialMessage
extends AbstractMRMessage

Contains the data payload of a serial packet. Note that it's _only_ the payload.

See the Grapevine Binary Message Format Summary

Field Summary

Fields

Modifier and Type	Field	Description
(package private) static java.lang.String[]	colors
(package private) int	replyLen

Fields inherited from class jmri.jmrix.AbstractMRMessage

LONG_TIMEOUT, SHORT_TIMEOUT

Fields inherited from class jmri.jmrix.AbstractMessage

_dataChars, _nDataChars

Constructor Summary

Constructors

Constructor	Description
SerialMessage()	Create a new SerialMessage instance.
SerialMessage(byte[] a)	Interpret the byte array as a sequence of characters to send.
SerialMessage(int len)	Create a new SerialMessage instance of a given byte size.
SerialMessage(java.lang.String m)	Create a new Message instance from a string.
SerialMessage(SerialMessage m)	Copy a SerialMessage to a new instance.

Method Summary

Modifier and Type	Method	Description
(package private) static java.lang.String	colorAsString(int color)
java.lang.String	format()	Format the reply as human-readable text.
int	getAddr()
static SerialMessage	getPoll(int addr)	For Grapevine, which doesn't have a data poll, the poll operation is only used to see that the nodes are present.
int	getReplyLen()
boolean	replyExpected()	Is a reply expected to this message?
void	setBank(int b)
void	setParity()
void	setParity(int start)
void	setReplyLen(int len)	Set the number of characters expected back from the command station.
(package private) static java.lang.String	staticFormat(int b1, int b2, int b3, int b4)	Provide a human-readable form of a message.

Methods inherited from class jmri.jmrix.AbstractMRMessage

addIntAsFourHex, addIntAsThree, addIntAsThreeHex, addIntAsTwoHex, getNeededMode, getOpCode, getOpCodeHex, getRetries, getTimeout, isBinary, setBinary, setNeededMode, setOpCode, setRetries, setTimeout, toString

Methods inherited from class jmri.jmrix.AbstractMessage

equals, getElement, getNumDataElements, hashCode, setElement

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface jmri.jmrix.Message

toMonitorString

Field Detail

replyLen

int replyLen

colors

static java.lang.String[] colors

Constructor Detail

SerialMessage

public SerialMessage()

Create a new SerialMessage instance.

SerialMessage

public SerialMessage(int len)

Create a new SerialMessage instance of a given byte size.

Parameters:

len - number of elements in the message

SerialMessage

public SerialMessage(SerialMessage m)

Copy a SerialMessage to a new instance.

Parameters:

m - the message to copy

SerialMessage

public SerialMessage(java.lang.String m)

Create a new Message instance from a string. Interprets the String as the exact sequence to send, byte-for-byte.

Parameters:

m - String to use as message content

SerialMessage

public SerialMessage(byte[] a)

Interpret the byte array as a sequence of characters to send.

Parameters:

a - Array of bytes to send

Method Detail

replyExpected

public boolean replyExpected()

Description copied from class: AbstractMRMessage

Is a reply expected to this message?

By default, a reply is expected to every message; either a reply or a timeout is needed before the next message can be sent.

If this returns false, the transmit queue will immediately go on to transmit the next message (if any).

Overrides:

replyExpected in class AbstractMRMessage

Returns:

true by default in Abstract MR message.

getAddr

public int getAddr()

getPoll

public static SerialMessage getPoll(int addr)

For Grapevine, which doesn't have a data poll, the poll operation is only used to see that the nodes are present. This is done by sending a "get software version" command.

Parameters:

addr - address to poll.

Returns:

serial message to poll data.

setBank

public void setBank(int b)

setParity

public void setParity()

setParity

public void setParity(int start)

setReplyLen

public void setReplyLen(int len)

Set the number of characters expected back from the command station. Normally four, this is used to set other lengths for special cases, like a reply to a poll (software version) message.

Parameters:

len - reply length.

getReplyLen

public int getReplyLen()

format

public java.lang.String format()

Format the reply as human-readable text.

Returns:

human-readable text of reply.

staticFormat

static java.lang.String staticFormat(int b1,
                                     int b2,
                                     int b3,
                                     int b4)

Provide a human-readable form of a message.

Used by both SerialMessage and SerialReply, because so much of it is common. That forces the passing of arguments as numbers. Short messages are marked by having missing bytes put to -1 in the arguments. See the Grapevine Binary Message Format Summary

Parameters:

b1 - 1st message byte

b2 - 2nd message byte

b3 - 3rd message byte

b4 - 4th message byte

Returns:

Human-readable form

colorAsString

static java.lang.String colorAsString(int color)