com.dalsemi.onewire.container
Class OneWireContainer1A

java.lang.Object
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  +--com.dalsemi.onewire.container.OneWireContainer
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        +--com.dalsemi.onewire.container.OneWireContainer1A

public class OneWireContainer1A

extends OneWireContainer

1-Wire container for 512 byte memory iButton with write cycle counters, DS1963L. This container encapsulates the functionality of the iButton family type 1A (hex)

This iButton is primarily used as a read/write portable memory device that provides tamper detection when utilizing the write counters.

Features

• 4096 bits (512 bytes) of read/write nonvolatile memory
• 256-bit (32-byte) scratchpad ensures integrity of data transfer
• Memory partitioned into 256-bit (32-byte) pages for packetizing data
• Data integrity assured with strict read/write protocols
• Overdrive mode boosts communication to 142 kbits per second
• Four 32-bit read-only non rolling-over page write cycle counters
• 32 factory-preset tamper-detect bits to indicate physical intrusion
• On-chip 16-bit CRC generator for safeguarding data transfers
• Operating temperature range from -40°C to +70°C
• Over 10 years of data retention

Memory

The memory can be accessed through the objects that are returned from the getMemoryBanks method.

The following is a list of the MemoryBank instances that are returned:

• Scratchpad Ex
  • Implements MemoryBank, PagedMemoryBank
  • Size 32 starting at physical address 0
  • Features Read/Write not-general-purpose volatile
  • Pages 1 pages of length 32 bytes
  • Extra information for each page Target address, offset, length 3
• Main Memory
  • Implements MemoryBank, PagedMemoryBank
  • Size 384 starting at physical address 0
  • Features Read/Write general-purpose non-volatile
  • Pages 12 pages of length 32 bytes giving 29 bytes Packet data payload
  • Page Features page-device-CRC
• Memory with write cycle counter
  • Implements MemoryBank, PagedMemoryBank
  • Size 128 starting at physical address 384
  • Features Read/Write general-purpose non-volatile
  • Pages 4 pages of length 32 bytes giving 29 bytes Packet data payload
  • Page Features page-device-CRC
  • Extra information for each page Write cycle counter, length 8

Usage

See the usage example in OneWireContainer to enumerate the MemoryBanks.

See the usage examples in MemoryBank and PagedMemoryBank for bank specific operations.

DataSheet

http://pdfserv.maxim-ic.com/arpdf/DS1963L.pdf

Version:

0.00, 28 Aug 2000

See Also:

MemoryBank, PagedMemoryBank, OneWireContainer18

Constructor Summary

OneWireContainer1A()
Create an empty container that is not complete until after a call to setupContainer.

OneWireContainer1A(DSPortAdapter sourceAdapter, byte[] newAddress)
Create a container with the provided adapter instance and the address of the iButton or 1-Wire device.

OneWireContainer1A(DSPortAdapter sourceAdapter, long newAddress)
Create a container with the provided adapter instance and the address of the iButton or 1-Wire device.

OneWireContainer1A(DSPortAdapter sourceAdapter, String newAddress)
Create a container with the provided adapter instance and the address of the iButton or 1-Wire device.

Method Summary

String	getAlternateNames() Get the alternate Dallas Semiconductor part numbers or names.
String	getDescription() Get a short description of the function of this iButton or 1-Wire Device type.
int	getMaxSpeed() Get the maximum speed this iButton or 1-Wire device can communicate at.
Enumeration	getMemoryBanks() Get an enumeration of memory bank instances that implement one or more of the following interfaces: MemoryBank, PagedMemoryBank, and OTPMemoryBank.
String	getName() Get the Dallas Semiconductor part number of the iButton or 1-Wire Device as a string.

Methods inherited from class com.dalsemi.onewire.container.OneWireContainer

doSpeed, getAdapter, getAddress, getAddressAsLong, getAddressAsString, isAlarming, isPresent, setSpeed, setupContainer, setupContainer, setupContainer

Methods inherited from class java.lang.Object

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

Constructor Detail

OneWireContainer1A

public OneWireContainer1A()

Create an empty container that is not complete until after a call to setupContainer.

This is one of the methods to construct a container. The others are through creating a OneWireContainer with parameters.

See Also:

super.setupContainer()

OneWireContainer1A

public OneWireContainer1A(DSPortAdapter sourceAdapter,
                          byte[] newAddress)

Create a container with the provided adapter instance and the address of the iButton or 1-Wire device.

This is one of the methods to construct a container. The other is through creating a OneWireContainer with NO parameters.

Parameters:

sourceAdapter - adapter instance used to communicate with this iButton

newAddress - Address of this 1-Wire device

See Also:

OneWireContainer1A, utils.Address

OneWireContainer1A

public OneWireContainer1A(DSPortAdapter sourceAdapter,
                          long newAddress)

Create a container with the provided adapter instance and the address of the iButton or 1-Wire device.

This is one of the methods to construct a container. The other is through creating a OneWireContainer with NO parameters.

Parameters:

sourceAdapter - adapter instance used to communicate with this 1-Wire device

newAddress - Address of this 1-Wire device

See Also:

OneWireContainer1A, utils.Address

OneWireContainer1A

public OneWireContainer1A(DSPortAdapter sourceAdapter,
                          String newAddress)

Create a container with the provided adapter instance and the address of the iButton or 1-Wire device.

This is one of the methods to construct a container. The other is through creating a OneWireContainer with NO parameters.

Parameters:

sourceAdapter - adapter instance used to communicate with this 1-Wire device

newAddress - Address of this 1-Wire device

See Also:

OneWireContainer1A, utils.Address

Method Detail

getName

public String getName()

Get the Dallas Semiconductor part number of the iButton or 1-Wire Device as a string. For example 'DS1992'.

Overrides:

getName in class OneWireContainer

Returns:

iButton or 1-Wire device name

getAlternateNames

public String getAlternateNames()

Get the alternate Dallas Semiconductor part numbers or names. A 'family' of 1-Wire Network devices may have more than one part number depending on packaging. There can also be nicknames such as 'Crypto iButton'.

Overrides:

getAlternateNames in class OneWireContainer

Returns:

1-Wire device alternate names

getDescription

public String getDescription()

Get a short description of the function of this iButton or 1-Wire Device type.

Overrides:

getDescription in class OneWireContainer

Returns:

device description

getMaxSpeed

public int getMaxSpeed()

Get the maximum speed this iButton or 1-Wire device can communicate at. Override this method if derived iButton type can go faster then SPEED_REGULAR(0).

Overrides:

getMaxSpeed in class OneWireContainer

Returns:

maximum speed

See Also:

super.setSpeed, DSPortAdapter.SPEED_REGULAR, DSPortAdapter.SPEED_OVERDRIVE, DSPortAdapter.SPEED_FLEX

getMemoryBanks

public Enumeration getMemoryBanks()

Get an enumeration of memory bank instances that implement one or more of the following interfaces: MemoryBank, PagedMemoryBank, and OTPMemoryBank.

Overrides:

getMemoryBanks in class OneWireContainer

Returns:

Enumeration of memory banks