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com.dalsemi.onewire.container
Class OneWireContainer1F

java.lang.Object
  |
  +--com.dalsemi.onewire.container.OneWireContainer
        |
        +--com.dalsemi.onewire.container.OneWireContainer1F
All Implemented Interfaces:
OneWireSensor, SwitchContainer
public class OneWireContainer1F
extends OneWireContainer
implements SwitchContainer

1-Wire® container for 1-Wire(MicroLAN) Coupler, DS2409. This container encapsulates the functionality of the 1-Wire family type 1F (hex).

Features

Setting the latch on the DS2409 to 'on' (see seLatchState) connects the channel [Main(0) or Auxillary(1)] to the 1-Wire data line. Note that this is the opposite of the DS2406 and DS2405 which connect thier I/O lines to ground.

Usage

See the usage example in SwitchContainer for basic switch operations.

DataSheet

http://pdfserv.maxim-ic.com/arpdf/DS2409.pdf

Version:
0.00, 13 Sept 2000
See Also:
OneWireSensor, SwitchContainer, OneWireContainer05, OneWireContainer12

Field Summary
static int CHANNEL_AUX
          Aux Channel number.
static int CHANNEL_MAIN
          Main Channel number.
 
Constructor Summary
OneWireContainer1F()
          Create an empty container that is not complete until after a call to setupContainer.
OneWireContainer1F(DSPortAdapter sourceAdapter, byte[] newAddress)
          Create a container with the provided adapter instance and the address of the iButton or 1-Wire device.
OneWireContainer1F(DSPortAdapter sourceAdapter, long newAddress)
          Create a container with the provided adapter instance and the address of the iButton or 1-Wire device.
OneWireContainer1F(DSPortAdapter sourceAdapter, String newAddress)
          Create a container with the provided adapter instance and the address of the iButton or 1-Wire device.
 
Method Summary
 void clearActivity()
          Clears the activity latches the next time possible.
 void dischargeLines(int time)
          Force a power-on reset for parasitically powered 1-Wire devices connected to the main or auziliary output of the DS2409.
 String getAlternateNames()
          Gets the alternate Dallas Semiconductor part numbers or names.
 int getControlChannelAssociation(byte[] state)
          Checks the channel association of the control pin.
 int getControlData(byte[] state)
          Checks the control data value.
 String getDescription()
          Gets a short description of the function of this iButton or 1-Wire Device type.
 boolean getLastSmartOnDeviceDetect()
          Gets flag that indicates if a device was present when doing the last smart on.
 boolean getLatchState(int channel, byte[] state)
          Checks the latch state of the indicated channel.
 boolean getLevel(int channel, byte[] state)
          Checks the sensed level on the indicated channel.
 String getName()
          Gets the Dallas Semiconductor part number of the iButton or 1-Wire Device as a string.
 int getNumberChannels(byte[] state)
          Query to get the number of channels supported by this switch.
 boolean getSensedActivity(int channel, byte[] state)
          Checks if the indicated channel has experienced activity.
 boolean hasActivitySensing()
          Checks to see if the channels of this switch support activity sensing.
 boolean hasLevelSensing()
          Checks to see if the channels of this switch support level sensing.
 boolean hasSmartOn()
          Checks to see if the channels of this switch support 'smart on'.
 boolean isHighSideSwitch()
          Checks to see if the channels of this switch are 'high side' switches.
 boolean isModeAuto(byte[] state)
          Checks if the control I/O pin mode is automatic (see DS2409 data sheet).
 boolean onlySingleChannelOn()
          Checks to see if the channels of this switch require that only one channel is on at any one time.
 byte[] readDevice()
          Retrieves the 1-Wire device sensor state.
 void setControlChannelAssociation(int channel, byte[] state)
          Sets the control pin channel association.
 void setControlData(boolean data, byte[] state)
          Sets the control pin data to a value.
 void setLatchState(int channel, boolean latchState, boolean doSmart, byte[] state)
          Sets the latch state of the indicated channel.
 void setModeAuto(boolean makeAuto, byte[] state)
          Sets the control pin mode.
 void setSpeedCheck(boolean doSpeedCheck)
          Directs the container to avoid the calls to doSpeed() in methods that communicate with the Thermocron.
 void writeDevice(byte[] state)
          Writes the 1-Wire device sensor state that have been changed by 'set' methods.
 
Methods inherited from class com.dalsemi.onewire.container.OneWireContainer
doSpeed, getAdapter, getAddress, getAddressAsLong, getAddressAsString, getMaxSpeed, getMemoryBanks, isAlarming, isPresent, setSpeed, setupContainer, setupContainer, setupContainer
 
Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

CHANNEL_MAIN

public static final int CHANNEL_MAIN
Main Channel number.

CHANNEL_AUX

public static final int CHANNEL_AUX
Aux Channel number.
Constructor Detail

OneWireContainer1F

public OneWireContainer1F()
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()

OneWireContainer1F

public OneWireContainer1F(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:
OneWireContainer1F, utils.Address

OneWireContainer1F

public OneWireContainer1F(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:
OneWireContainer1F, utils.Address

OneWireContainer1F

public OneWireContainer1F(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:
OneWireContainer1F, utils.Address
Method Detail

getName

public String getName()
Gets 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()
Gets 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()
Gets a short description of the function of this iButton or 1-Wire Device type.
Overrides:
getDescription in class OneWireContainer
Returns:
device description

setSpeedCheck

public void setSpeedCheck(boolean doSpeedCheck)
Directs the container to avoid the calls to doSpeed() in methods that communicate with the Thermocron. To ensure that all parts can talk to the 1-Wire bus at their desired speed, each method contains a call to doSpeed(). However, this is an expensive operation. If a user manages the bus speed in an application, call this method with doSpeedCheck as false. The default behavior is to call doSpeed().
Parameters:
doSpeedCheck - true for doSpeed() to be called before every 1-Wire bus access, false to skip this expensive call
See Also:
OneWireContainer.doSpeed()

readDevice

public byte[] readDevice()
                  throws OneWireIOException,
                         OneWireException
Retrieves the 1-Wire device sensor state. This state is returned as a byte array. Pass this byte array to the 'get' and 'set' methods. If the device state needs to be changed then call the 'writeDevice' to finalize the changes.
Specified by:
readDevice in interface OneWireSensor
Returns:
1-Wire device sensor state
Throws:
OneWireIOException - on a 1-Wire communication error such as reading an incorrect CRC from a 1-Wire device. This could be caused by a physical interruption in the 1-Wire Network due to shorts or a newly arriving 1-Wire device issuing a 'presence pulse'.
OneWireException - on a communication or setup error with the 1-Wire adapter

writeDevice

public void writeDevice(byte[] state)
                 throws OneWireIOException,
                        OneWireException
Writes the 1-Wire device sensor state that have been changed by 'set' methods. Only the state registers that changed are updated. This is done by referencing a field information appended to the state data.
Specified by:
writeDevice in interface OneWireSensor
Parameters:
state - 1-Wire device sensor state
Throws:
OneWireIOException - on a 1-Wire communication error such as reading an incorrect CRC from a 1-Wire device. This could be caused by a physical interruption in the 1-Wire Network due to shorts or a newly arriving 1-Wire device issuing a 'presence pulse'.
OneWireException - on a communication or setup error with the 1-Wire adapter

dischargeLines

public void dischargeLines(int time)
                    throws OneWireIOException,
                           OneWireException

Force a power-on reset for parasitically powered 1-Wire devices connected to the main or auziliary output of the DS2409.

IMPORTANT: the duration of the discharge time should be 100ms minimum.


Parameters:
time - number of milliseconds the lines are to be discharged for (minimum 100)
Throws:
OneWireIOException - on a 1-Wire communication error such as reading an incorrect CRC from a 1-Wire device. This could be caused by a physical interruption in the 1-Wire Network due to shorts or a newly arriving 1-Wire device issuing a 'presence pulse'.
OneWireException - on a communication or setup error with the 1-Wire adapter

isHighSideSwitch

public boolean isHighSideSwitch()
Checks to see if the channels of this switch are 'high side' switches. This indicates that when 'on' or true, the switch output is connect to the 1-Wire data. If this method returns false then when the switch is 'on' or true, the switch is connected to ground.
Specified by:
isHighSideSwitch in interface SwitchContainer
Returns:
true if the switch is a 'high side' switch, false if the switch is a 'low side' switch
See Also:
getLatchState(int,byte[])

hasActivitySensing

public boolean hasActivitySensing()
Checks to see if the channels of this switch support activity sensing. If this method returns true then the method getSensedActivity(int,byte[]) can be used.
Specified by:
hasActivitySensing in interface SwitchContainer
Returns:
true if channels support activity sensing
See Also:
getSensedActivity(int,byte[]), clearActivity()

hasLevelSensing

public boolean hasLevelSensing()
Checks to see if the channels of this switch support level sensing. If this method returns true then the method getLevel(int,byte[]) can be used.
Specified by:
hasLevelSensing in interface SwitchContainer
Returns:
true if channels support level sensing
See Also:
getLevel(int,byte[])

hasSmartOn

public boolean hasSmartOn()
Checks to see if the channels of this switch support 'smart on'. Smart on is the ability to turn on a channel such that only 1-Wire device on this channel are awake and ready to do an operation. This greatly reduces the time to discover the device down a branch. If this method returns true then the method setLatchState(int,boolean,boolean,byte[]) can be used with the doSmart parameter true.
Specified by:
hasSmartOn in interface SwitchContainer
Returns:
true if channels support 'smart on'
See Also:
setLatchState(int,boolean,boolean,byte[])

onlySingleChannelOn

public boolean onlySingleChannelOn()
Checks to see if the channels of this switch require that only one channel is on at any one time. If this method returns true then the method setLatchState(int,boolean,boolean,byte[]) will not only affect the state of the given channel but may affect the state of the other channels as well to insure that only one channel is on at a time.
Specified by:
onlySingleChannelOn in interface SwitchContainer
Returns:
true if only one channel can be on at a time.
See Also:
setLatchState(int,boolean,boolean,byte[])

getNumberChannels

public int getNumberChannels(byte[] state)
Query to get the number of channels supported by this switch. Channel specific methods will use a channel number specified by an integer from [0 to (getNumberChannels(byte[]) - 1)]. Note that all devices of the same family will not necessarily have the same number of channels. The DS2406 comes in two packages--one that has a single channel, and one that has two channels.
Specified by:
getNumberChannels in interface SwitchContainer
Parameters:
state - current state of the device returned from readDevice()
Returns:
the number of channels for this device

getLevel

public boolean getLevel(int channel,
                        byte[] state)
                 throws OneWireException
Checks the sensed level on the indicated channel. To avoid an exception, verify that this switch has level sensing with the hasLevelSensing(). Level sensing means that the device can sense the logic level on its PIO pin.
Specified by:
getLevel in interface SwitchContainer
Parameters:
channel - channel to execute this operation, in the range [0 to (getNumberChannels(byte[]) - 1)]
state - current state of the device returned from readDevice()
Returns:
true if level sensed is 'high' and false if level sensed is 'low'
See Also:
OneWireSensor.readDevice(), hasLevelSensing()

getLatchState

public boolean getLatchState(int channel,
                             byte[] state)
Checks the latch state of the indicated channel.
Specified by:
getLatchState in interface SwitchContainer
Parameters:
channel - channel to execute this operation, in the range [0 to (getNumberChannels(byte[]) - 1)]
state - current state of the device returned from readDevice()
Returns:
true if channel latch is 'on' or conducting and false if channel latch is 'off' and not conducting. Note that the actual output when the latch is 'on' is returned from the isHighSideSwitch() method.
See Also:
OneWireSensor.readDevice(), isHighSideSwitch(), setLatchState(int,boolean,boolean,byte[])

getSensedActivity

public boolean getSensedActivity(int channel,
                                 byte[] state)
                          throws OneWireException
Checks if the indicated channel has experienced activity. This occurs when the level on the PIO pins changes. To clear the activity that is reported, call clearActivity(). To avoid an exception, verify that this device supports activity sensing by calling the method hasActivitySensing().
Specified by:
getSensedActivity in interface SwitchContainer
Parameters:
channel - channel to execute this operation, in the range [0 to (getNumberChannels(byte[]) - 1)]
state - current state of the device returned from readDevice()
Returns:
true if activity was detected and false if no activity was detected
Throws:
OneWireException - if this device does not have activity sensing
See Also:
hasActivitySensing(), clearActivity()

isModeAuto

public boolean isModeAuto(byte[] state)
Checks if the control I/O pin mode is automatic (see DS2409 data sheet).
Parameters:
state - current state of the device returned from readDevice()
Returns:
true if control mode is automatic

getControlChannelAssociation

public int getControlChannelAssociation(byte[] state)
Checks the channel association of the control pin. This value only makes sense if the control mode is automatic (see isModeAuto).
Parameters:
state - current state of the device returned from readDevice()
Returns:
int the channel number that is associated with the control pin

getControlData

public int getControlData(byte[] state)
Checks the control data value. This value only makes sense if the control mode is manual (see isModeAuto). 0 = output transistor off, 1 = output transistor on
Parameters:
state - current state of the device returned from readDevice()
Returns:
int the control output transistor state

getLastSmartOnDeviceDetect

public boolean getLastSmartOnDeviceDetect()
Gets flag that indicates if a device was present when doing the last smart on. Note that this flag is only valid if the DS2409 flag was cleared with an ALL_LINES_OFF command and the last writeDevice performed a 'smart-on' on one of the channels.
Returns:
true if device detected on branch

setLatchState

public void setLatchState(int channel,
                          boolean latchState,
                          boolean doSmart,
                          byte[] state)
Sets the latch state of the indicated channel. The method writeDevice(byte[]) must be called to finalize changes to the device. Note that multiple 'set' methods can be called before one call to writeDevice(byte[]).
Specified by:
setLatchState in interface SwitchContainer
Parameters:
channel - channel to execute this operation, in the range [0 to (getNumberChannels(byte[]) - 1)]
latchState - true to set the channel latch 'on' (conducting) and false to set the channel latch 'off' (not conducting). Note that the actual output when the latch is 'on' is returned from the isHighSideSwitch() method.
doSmart - If latchState is 'on'/true then doSmart indicates if a 'smart on' is to be done. To avoid an exception check the capabilities of this device using the hasSmartOn() method.
state - current state of the device returned from readDevice()
See Also:
hasSmartOn(), getLatchState(int,byte[]), OneWireSensor.writeDevice(byte[])

clearActivity

public void clearActivity()
                   throws OneWireException
Clears the activity latches the next time possible. For example, on a DS2406/07, this happens the next time the status is read with readDevice().
Specified by:
clearActivity in interface SwitchContainer
Throws:
OneWireException - if this device does not support activity sensing
See Also:
OneWireSensor.readDevice(), getSensedActivity(int,byte[])

setModeAuto

public void setModeAuto(boolean makeAuto,
                        byte[] state)
Sets the control pin mode. The method writeDevice(byte[]) must be called to finalize changes to the device. Note that multiple 'set' methods can be called before one call to writeDevice(byte[]).
Parameters:
makeAuto - true to set to auto mode, false for manual mode
state - current state of the device returned from readDevice()

setControlChannelAssociation

public void setControlChannelAssociation(int channel,
                                         byte[] state)
                                  throws OneWireException
Sets the control pin channel association. This only makes sense if the contol pin is in automatic mode. The method writeDevice(byte[]) must be called to finalize changes to the device. Note that multiple 'set' methods can be called before one call to writeDevice(byte[]).
Parameters:
channel - channel to associate with control pin
state - current state of the device returned from readDevice()
Throws:
OneWireException - when trying to set channel association in manual mode

setControlData

public void setControlData(boolean data,
                           byte[] state)
                    throws OneWireException
Sets the control pin data to a value. Note this method only works if the control pin is in manual mode. The method writeDevice(byte[]) must be called to finalize changes to the device. Note that multiple 'set' methods can be called before one call to writeDevice(byte[]).
Parameters:
data - true for on and false for off
state - current state of the device returned from readDevice()
Throws:
OneWireException - when trying to set control data in automatic mode
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