faa.misc.oneWire
Class oneWireBus

java.lang.Object
  faa.misc.oneWire.oneWireBus

public class oneWireBus
extends java.lang.Object

oneWireBus represents a Dallas Semiconductor One-Wire Bus which actually consists of two wires. Source: oneWireBus.java

Version:

$Id: oneWireBus.java,v 3.1 2006/03/14 15:47:35 samf Exp $

Author:

David Lonkart

See Also:

oneWireBus

Field Summary

static byte	ALARMSEARCH Byte used to send a AlarmSearch command.
static byte	CONVERTT Byte used to send a ConvertT command.
static byte	COPYSCRATCH Byte used to send a CopyScratchpad command.
static java.lang.String	CVS_VERSION_ID The CVS Version ID
private java.io.InputStream	from_bus InputStream object
static byte	MATCHROM Byte used to send a MatchROM command.
static byte	ONEBIT Byte used to send a one bit on the bus
static byte	READPOWER Byte used to send a Read Power Supply command.
static byte	READROM Byte used to send a ReadROM command.
static byte	READSCRATCH Byte used to send a ReadScratchpad command.
static byte	RECALLE2 Byte used to send a RecallE2 command.
static byte	RESET Byte used to send a Reset command.
private SerialCommunicator	sc Serial communicator object.
static byte	SEARCHROM Byte used to send a SearchROM command.
static byte	SKIPROM Byte used to send a SkipROM command.
private java.io.OutputStream	to_bus OuputStream object
static byte	WRITESCRATCH Byte used to send a WriteScratchpad command.
static byte	ZEROBIT Byte used to send a zero bit on the bus

Constructor Summary

oneWireBus(SerialCommunicator sc)
Construct a new one wire bus.

Method Summary

void	AlarmSearch() Issue a Alarm Search command on the bus This allows the bus master to find all of the unique ROM codes of the devices on the bus that have an alarm set.
void	ConvertT() Issue a Convert T command on the bus Measure the temperature.
void	CopyScratch() Issue a Copy Scratchpad command on the bus Copy scratchpad data into EE memory.
void	MatchROM(byte[] ROMcode) Issue a Match ROM command on the bus This allows the bus master to address a single device by disabling (until RESET) all other devices not matching the ROMcode put on the wire.
byte	readByte() Read a byte from the bus.
void	ReadROM() Issue a Read ROM command on the bus This reads the 64 bit ROM code from a device when there is only one device on the entire bus.
void	ReadScratch() Issue a Read Scratchpad command on the bus Read data from the scratchpad of a particular device.
void	RecallE2() Issue a Recall E2 command on the bus Recall the EE memory values to the scratchpad.
void	Reset() Issue a RESET command on the bus
void	SearchROM() Issue a Search ROM command on the bus This allows the bus master to find all of the unique ROM codes of the devices on the bus.
void	SkipROM() Issue a Skip ROM command on the bus This allows the bus master to address the ONLY device on the bus without specifying the ROM code.
byte	writeByte(byte data) Write a byte on the bus.
void	WriteScratch() Issue a Write Scratchpad command on the bus Write data to the scratchpad of a particular device.

Methods inherited from class java.lang.Object

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

Field Detail

CVS_VERSION_ID

public static final java.lang.String CVS_VERSION_ID

The CVS Version ID

See Also:

Constant Field Values

ONEBIT

public static final byte ONEBIT

Byte used to send a one bit on the bus

See Also:

Constant Field Values

ZEROBIT

public static final byte ZEROBIT

Byte used to send a zero bit on the bus

See Also:

Constant Field Values

RESET

public static final byte RESET

Byte used to send a Reset command.

See Also:

Constant Field Values

READROM

public static final byte READROM

Byte used to send a ReadROM command.

See Also:

Constant Field Values

MATCHROM

public static final byte MATCHROM

Byte used to send a MatchROM command.

See Also:

Constant Field Values

SKIPROM

public static final byte SKIPROM

Byte used to send a SkipROM command.

See Also:

Constant Field Values

SEARCHROM

public static final byte SEARCHROM

Byte used to send a SearchROM command.

See Also:

Constant Field Values

ALARMSEARCH

public static final byte ALARMSEARCH

Byte used to send a AlarmSearch command.

See Also:

Constant Field Values

WRITESCRATCH

public static final byte WRITESCRATCH

Byte used to send a WriteScratchpad command.

See Also:

Constant Field Values

READSCRATCH

public static final byte READSCRATCH

Byte used to send a ReadScratchpad command.

See Also:

Constant Field Values

COPYSCRATCH

public static final byte COPYSCRATCH

Byte used to send a CopyScratchpad command.

See Also:

Constant Field Values

CONVERTT

public static final byte CONVERTT

Byte used to send a ConvertT command.

See Also:

Constant Field Values

RECALLE2

public static final byte RECALLE2

Byte used to send a RecallE2 command.

See Also:

Constant Field Values

READPOWER

public static final byte READPOWER

Byte used to send a Read Power Supply command.

See Also:

Constant Field Values

sc

private SerialCommunicator sc

Serial communicator object.

to_bus

private java.io.OutputStream to_bus

OuputStream object

from_bus

private java.io.InputStream from_bus

InputStream object

Constructor Detail

oneWireBus

public oneWireBus(SerialCommunicator sc)

Construct a new one wire bus.

Method Detail

Reset

public void Reset()
           throws oneWireCmdFailure

Issue a RESET command on the bus

Throws:

oneWireCmdFailure

ReadROM

public void ReadROM()
             throws oneWireCmdFailure

Issue a Read ROM command on the bus This reads the 64 bit ROM code from a device when there is only one device on the entire bus.

Throws:

oneWireCmdFailure

MatchROM

public void MatchROM(byte[] ROMcode)
              throws oneWireCmdFailure

Issue a Match ROM command on the bus This allows the bus master to address a single device by disabling (until RESET) all other devices not matching the ROMcode put on the wire.

Throws:

oneWireCmdFailure

SkipROM

public void SkipROM()
             throws oneWireCmdFailure

Issue a Skip ROM command on the bus This allows the bus master to address the ONLY device on the bus without specifying the ROM code.

Throws:

oneWireCmdFailure

SearchROM

public void SearchROM()
               throws oneWireCmdFailure

Issue a Search ROM command on the bus This allows the bus master to find all of the unique ROM codes of the devices on the bus.

Throws:

oneWireCmdFailure

AlarmSearch

public void AlarmSearch()
                 throws oneWireCmdFailure

Issue a Alarm Search command on the bus This allows the bus master to find all of the unique ROM codes of the devices on the bus that have an alarm set.

Throws:

oneWireCmdFailure

WriteScratch

public void WriteScratch()
                  throws oneWireCmdFailure

Issue a Write Scratchpad command on the bus Write data to the scratchpad of a particular device. Requires a previous MatchROM or SkipROM command.

Throws:

oneWireCmdFailure

ReadScratch

public void ReadScratch()
                 throws oneWireCmdFailure

Issue a Read Scratchpad command on the bus Read data from the scratchpad of a particular device. Requires a previous MatchROM or SkipROM command.

Throws:

oneWireCmdFailure

CopyScratch

public void CopyScratch()
                 throws oneWireCmdFailure

Issue a Copy Scratchpad command on the bus Copy scratchpad data into EE memory. Requires a previous MatchROM or SkipROM command.

Throws:

oneWireCmdFailure

ConvertT

public void ConvertT()
              throws oneWireCmdFailure

Issue a Convert T command on the bus Measure the temperature. Requires a previous MatchROM or SkipROM command.

Throws:

oneWireCmdFailure

RecallE2

public void RecallE2()
              throws oneWireCmdFailure

Issue a Recall E2 command on the bus Recall the EE memory values to the scratchpad. Requires a previous MatchROM or SkipROM command.

Throws:

oneWireCmdFailure

writeByte

public byte writeByte(byte data)
               throws oneWireCmdFailure

Write a byte on the bus. Each bit of the data byte requires that an entire byte be written on the bus.

Throws:

oneWireCmdFailure

readByte

public byte readByte()
              throws oneWireCmdFailure

Read a byte from the bus.

Returns:

A byte from the bus.

Throws:

oneWireCmdFailure