java.lang.Object
- com.dalsemi.onewire.container.OneWireContainer
- - com.dalsemi.onewire.container.OneWireContainer20

All Implemented Interfaces:

ADContainer, OneWireSensor
```
public class OneWireContainer20
extends OneWireContainer
implements ADContainer
```
1-Wire® container that encapsulates the functionality of the 1-Wire family type 20 (hex), Maxim Integrated Products part number: DS2450, 1-Wire Quad A/D Converter.

Features
- Four high-impedance inputs
- Programmable input range (2.56V, 5.12V), resolution (1 to 16 bits) and alarm thresholds
- 5V, single supply operation
- Very low power, 2.5 mW active, 25 @htmlonly µW @endhtmlonly idle
- Unused analog inputs can serve as open drain digital outputs for closed-loop control
- Operating temperature range from -40@htmlonly °C @endhtmlonly to +85@htmlonly °C @endhtmlonly
Usage

Example device setup
```
 
      byte[] state = owd.readDevice();
      owd.setResolution(OneWireContainer20.CHANNELA, 16, state);
      owd.setResolution(OneWireContainer20.CHANNELB, 8, state);
      owd.setRange(OneWireContainer20.CHANNELA, 5.12, state);
      owd.setRange(OneWireContainer20.CHANNELB, 2.56, state);
      owd.writeDevice();
 
 
```
Example device read
```
 
      owd.doADConvert(OneWireContainer20.CHANNELA, state);
      owd.doADConvert(OneWireContainer20.CHANNELB, state);
      double chAVolatge = owd.getADVoltage(OneWireContainer20.CHANNELA, state);
      double chBVoltage = owd.getADVoltage(OneWireContainer20.CHANNELB, state);
 
 
```
Note

When converting analog voltages to digital, the user of the device must guarantee that the voltage seen by the channel of the quad A/D does not exceed the selected input range of the device. If this happens, the device will default to reading 0 volts. There is NO way to know if the device is reading a higher than specified voltage or NO voltage.

DataSheet
http://pdfserv.maxim-ic.com/arpdf/DS2450.pdf

Field Summary

Fields
Modifier and Type	Field	Description
`static int`	`ALARM_OFFSET`	Offset of ALARMS in array returned from read state
`static int`	`BITMAP_OFFSET`	Offset of BITMAP in array returned from read state
`static int`	`CHANNELA`	Channel A number
`static int`	`CHANNELB`	Channel B number
`static int`	`CHANNELC`	Channel C number
`static int`	`CHANNELD`	Channel D number
`static int`	`EXPOWER_OFFSET`	Offset of external power offset in array returned from read state
`static int`	`NO_PRESET`	No preset value
`static int`	`NUM_CHANNELS`	Number of channels
`static int`	`PRESET_TO_ONES`	Preset value to ones
`static int`	`PRESET_TO_ZEROS`	Preset value to zeros

Fields inherited from class com.dalsemi.onewire.container.OneWireContainer
adapter, address, speed, speedFallBackOK

Fields inherited from interface com.dalsemi.onewire.container.ADContainer
ALARM_HIGH, ALARM_LOW

Constructor Summary

Constructors
Constructor	Description
`OneWireContainer20()`	Default constructor
`OneWireContainer20(DSPortAdapter sourceAdapter, byte[] newAddress)`	Creates a container with a provided adapter object and the address of the 1-Wire device.
`OneWireContainer20(DSPortAdapter sourceAdapter, long newAddress)`	Creates a container with a provided adapter object and the address of the 1-Wire device.
`OneWireContainer20(DSPortAdapter sourceAdapter, java.lang.String newAddress)`	Creates a container with a provided adapter object and the address of the 1-Wire device.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`canADMultiChannelRead()`	Queries to see if this A/D supports doing multiple voltage conversions at the same time.
`void`	`doADConvert(boolean[] doConvert, byte[] state)`	Performs voltage conversion on all specified channels.
`void`	`doADConvert(boolean[] doConvert, int[] preset, byte[] state)`	Performs voltage conversion on all specified channels.
`void`	`doADConvert(int channel, byte[] state)`	Performs voltage conversion on specified channel.
`void`	`doADConvert(int channel, int preset, byte[] state)`	Performs voltage conversion on specified channel.
`double`	`getADAlarm(int channel, int alarmType, byte[] state)`	Extracts the alarm voltage value of the specified channel from the provided state buffer.
`boolean`	`getADAlarmEnable(int channel, int alarmType, byte[] state)`	Extracts the alarm enable value of the specified channel from the provided state buffer.
`double`	`getADRange(int channel, byte[] state)`	Extracts the input voltage range of the specified channel from the provided state buffer.
`double[]`	`getADRanges(int channel)`	Queries to get an array of available ranges for the specified A/D channel.
`double`	`getADResolution(int channel, byte[] state)`	Extracts the conversion resolution of the specified channel from the provided state buffer expressed in volts.
`double[]`	`getADResolutions(int channel, double range)`	Queries to get an array of available resolutions based on the specified range on the specified A/D channel.
`double[]`	`getADVoltage(byte[] state)`	Reads the voltage values.
`double`	`getADVoltage(int channel, byte[] state)`	Reads a channels voltage value.
`java.lang.String`	`getAlternateNames()`	Gets any other possible names for this 1-Wire device.
`java.lang.String`	`getDescription()`	Gets a brief description of the functionality of this 1-Wire device.
`boolean`	`getDevicePOR(byte[] state)`	Detects if this device has seen a Power-On-Reset (POR).
`int`	`getMaxSpeed()`	Gets the maximum speed this 1-Wire device can communicate at.
`java.util.Enumeration<MemoryBank>`	`getMemoryBanks()`	Gets an enumeration of memory banks.
`java.lang.String`	`getName()`	Gets the name of this 1-Wire device.
`int`	`getNumberADChannels()`	Queries to get the number of channels supported by this A/D.
`boolean`	`getOutputState(int channel, byte[] state)`	Detects if the output is enabled for the specified channel from the provided register buffer.
`boolean`	`hasADAlarmed(int channel, int alarmType, byte[] state)`	Checks the alarm event value of the specified channel from the provided state buffer.
`boolean`	`hasADAlarms()`	Queries to see if this A/D measuring device has high/low alarms.
`static double`	`interpretVoltage(long rawVoltage, double range)`	Converts a raw voltage long value for the DS2450 into a valid voltage.
`boolean`	`isOutputEnabled(int channel, byte[] state)`	Detects if the output is enabled for the specified channel from the provided register buffer.
`boolean`	`isPowerExternal(byte[] state)`	Extracts the state of the external power indicator from the provided register buffer.
`byte[]`	`readDevice()`	Retrieves the entire A/D control/status and alarm pages.
`void`	`setADAlarm(int channel, int alarmType, double alarm, byte[] state)`	Sets the alarm voltage value of the specified channel in the provided state buffer.
`void`	`setADAlarmEnable(int channel, int alarmType, boolean alarmEnable, byte[] state)`	Sets the alarm enable value of the specified channel in the provided state buffer.
`void`	`setADRange(int channel, double range, byte[] state)`	Sets the input range for the specified channel in the provided state buffer.
`void`	`setADResolution(int channel, double resolution, byte[] state)`	Sets the conversion resolution value for the specified channel in the provided state buffer.
`void`	`setOutput(int channel, boolean outputEnable, boolean outputState, byte[] state)`	Sets the output enable and state for the specified channel in the provided register buffer.
`void`	`setPower(boolean external, byte[] state)`	Sets or clears the external power flag in the provided register buffer.
`static int`	`voltageToInt(double voltage, double range)`	Converts a voltage double value to the DS2450 specific int value.
`void`	`writeDevice(byte[] state)`	Writes the bytes in the provided A/D register pages that have been changed by the 'set' methods.

Methods inherited from class com.dalsemi.onewire.container.OneWireContainer
doSpeed, equals, getAdapter, getAddress, getAddressAsLong, getAddressAsString, hashCode, isAlarming, isPresent, setSpeed, setupContainer, setupContainer, setupContainer, toString

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

- Field Detail
  - BITMAP_OFFSET
```
public static final int BITMAP_OFFSET
```
    Offset of BITMAP in array returned from read state
    
    See Also:
    
    Constant Field Values
  - ALARM_OFFSET
```
public static final int ALARM_OFFSET
```
    Offset of ALARMS in array returned from read state
    
    See Also:
    
    Constant Field Values
  - EXPOWER_OFFSET
```
public static final int EXPOWER_OFFSET
```
    Offset of external power offset in array returned from read state
    
    See Also:
    
    Constant Field Values
  - CHANNELA
```
public static final int CHANNELA
```
    Channel A number
    
    See Also:
    
    Constant Field Values
  - CHANNELB
```
public static final int CHANNELB
```
    Channel B number
    
    See Also:
    
    Constant Field Values
  - CHANNELC
```
public static final int CHANNELC
```
    Channel C number
    
    See Also:
    
    Constant Field Values
  - CHANNELD
```
public static final int CHANNELD
```
    Channel D number
    
    See Also:
    
    Constant Field Values
  - NO_PRESET
```
public static final int NO_PRESET
```
    No preset value
    
    See Also:
    
    Constant Field Values
  - PRESET_TO_ZEROS
```
public static final int PRESET_TO_ZEROS
```
    Preset value to zeros
    
    See Also:
    
    Constant Field Values
  - PRESET_TO_ONES
```
public static final int PRESET_TO_ONES
```
    Preset value to ones
    
    See Also:
    
    Constant Field Values
  - NUM_CHANNELS
```
public static final int NUM_CHANNELS
```
    Number of channels
    
    See Also:
    
    Constant Field Values
- Constructor Detail
  - OneWireContainer20
```
public OneWireContainer20()
```
    Default constructor
  - OneWireContainer20
```
public OneWireContainer20(DSPortAdapter sourceAdapter,
                          byte[] newAddress)
```
    Creates a container with a provided adapter object and the address of the 1-Wire device.
    
    Parameters:
    
    sourceAdapter - adapter required to communicate with this device
    
    newAddress - address of this 1-Wire device
  - OneWireContainer20
```
public OneWireContainer20(DSPortAdapter sourceAdapter,
                          long newAddress)
```
    Creates a container with a provided adapter object and the address of the 1-Wire device.
    
    Parameters:
    
    sourceAdapter - adapter required to communicate with this device
    
    newAddress - address of this 1-Wire device
  - OneWireContainer20
```
public OneWireContainer20(DSPortAdapter sourceAdapter,
                          java.lang.String newAddress)
```
    Creates a container with a provided adapter object and the address of the 1-Wire device.
    
    Parameters:
    
    sourceAdapter - adapter required to communicate with this device
    
    newAddress - address of this 1-Wire device
- Method Detail
  - getName
```
public java.lang.String getName()
```
    Gets the name of this 1-Wire device.
    
    Overrides:
    
    getName in class OneWireContainer
    
    Returns:
    
    representation of this 1-Wire device's name
  - getAlternateNames
```
public java.lang.String getAlternateNames()
```
    Gets any other possible names for this 1-Wire device.
    
    Overrides:
    
    getAlternateNames in class OneWireContainer
    
    Returns:
    
    representation of this 1-Wire device's other names
  - getDescription
```
public java.lang.String getDescription()
```
    Gets a brief description of the functionality of this 1-Wire device.
    
    Overrides:
    
    getDescription in class OneWireContainer
    
    Returns:
    
    description of this 1-Wire device's functionality
  - getMaxSpeed
```
public int getMaxSpeed()
```
    Gets the maximum speed this 1-Wire device can communicate at.
    
    Overrides:
    
    getMaxSpeed in class OneWireContainer
    
    Returns:
    
    maximum speed of this One-Wire device
    
    See Also:
    
    DSPortAdapter.setSpeed(int)
  - getMemoryBanks
```
public java.util.Enumeration<MemoryBank> getMemoryBanks()
```
    Gets an enumeration of memory banks.
    
    Overrides:
    
    getMemoryBanks in class OneWireContainer
    
    Returns:
    
    enumeration of memory banks
    
    See Also:
    
    MemoryBank, PagedMemoryBank, OTPMemoryBank
  - getNumberADChannels
```
public int getNumberADChannels()
```
    Queries to get the number of channels supported by this A/D. Channel specific methods will use a channel number specified by an integer from [0 to (getNumberChannels() - 1)].
    
    Specified by:
    
    getNumberADChannels in interface ADContainer
    
    Returns:
    
    the number of channels
  - hasADAlarms
```
public boolean hasADAlarms()
```
    Queries to see if this A/D measuring device has high/low alarms.
    
    Specified by:
    
    hasADAlarms in interface ADContainer
    
    Returns:
    
    true if it has high/low trips
  - getADRanges
```
public double[] getADRanges(int channel)
```
    Queries to get an array of available ranges for the specified A/D channel.
    
    Specified by:
    
    getADRanges in interface ADContainer
    
    Parameters:
    
    channel - channel in the range [0 to (getNumberChannels() - 1)]
    
    Returns:
    
    available ranges starting from the largest range to the smallest range
    
    See Also:
    
    ADContainer.getNumberADChannels()
  - getADResolutions
```
public double[] getADResolutions(int channel,
                                 double range)
```
    Queries to get an array of available resolutions based on the specified range on the specified A/D channel.
    
    Specified by:
    
    getADResolutions in interface ADContainer
    
    Parameters:
    
    channel - channel in the range [0 to (getNumberChannels() - 1)]
    
    range - specified range
    
    Returns:
    
    available resolutions
    
    See Also:
    
    ADContainer.getNumberADChannels(), ADContainer.getADRanges(int)
  - canADMultiChannelRead
```
public boolean canADMultiChannelRead()
```
    Queries to see if this A/D supports doing multiple voltage conversions at the same time.
    
    Specified by:
    
    canADMultiChannelRead in interface ADContainer
    
    Returns:
    
    true if can do multi-channel voltage reads
    
    See Also:
    
    ADContainer.doADConvert(boolean[],byte[])
  - readDevice
```
public byte[] readDevice()
                  throws OneWireIOException,
                         OneWireException
```
    Retrieves the entire A/D control/status and alarm pages. It reads this and verifies the data with the onboard CRC generator. Use the byte array returned from this method with static utility methods to extract the status, alarm and other register values. Appended to the data is 2 bytes that represent a bitmap of changed bytes. These bytes are used in the writeADRegisters() in conjunction with the 'set' methods to only write back the changed register bytes.
    
    Specified by:
    
    readDevice in interface OneWireSensor
    
    Returns:
    
    register page contents verified with onboard CRC
    
    Throws:
    
    OneWireIOException - Data was not read correctly
    
    OneWireException - Could not find part
  - writeDevice
```
public void writeDevice(byte[] state)
                 throws OneWireIOException,
                        OneWireException
```
    Writes the bytes in the provided A/D register pages that have been changed by the 'set' methods. It knows which state has changed by looking at the bitmap fields appended to the register data. Any alarm flags will be automatically cleared. Only VCC powered indicator byte in physical location 0x1C can be written in the calibration memory bank.
    
    Specified by:
    
    writeDevice in interface OneWireSensor
    
    Parameters:
    
    state - register pages
    
    Throws:
    
    OneWireIOException - Data was not written correctly
    
    OneWireException - Could not find part
  - getADVoltage
```
public double[] getADVoltage(byte[] state)
                      throws OneWireIOException,
                             OneWireException
```
    Reads the voltage values. Must be used after a doADConvert() method call. Also must include the last valid state from the readDevice() method and this A/D must support multi-channel read canMultiChannelRead() if there are more then 1 channel.
    
    Specified by:
    
    getADVoltage in interface ADContainer
    
    Parameters:
    
    state - current state of this device returned from readDevice()
    
    Returns:
    
    voltage values for all channels
    
    Throws:
    
    OneWireIOException - Data was not read correctly
    
    OneWireException - Could not find part
    
    See Also:
    
    ADContainer.doADConvert(boolean[],byte[])
  - getADVoltage
```
public double getADVoltage(int channel,
                           byte[] state)
                    throws OneWireIOException,
                           OneWireException
```
    Reads a channels voltage value. Must be used after a doADConvert() method call. Also must include the last valid state from the readDevice() method. Note, if more then one channel is to be read then it is more efficient to use the getADVoltage(byte[]) method that returns all channel values.
    
    Specified by:
    
    getADVoltage in interface ADContainer
    
    Parameters:
    
    channel - channel in the range [0 to (getNumberChannels() - 1)]
    
    state - current state of this device returned from readDevice()
    
    Returns:
    
    voltage value for the specified channel
    
    Throws:
    
    OneWireIOException - Data was not read correctly
    
    OneWireException - Could not find part
    
    java.lang.IllegalArgumentException - Invalid channel number passed
    
    See Also:
    
    ADContainer.doADConvert(int,byte[]), ADContainer.getADVoltage(byte[])
  - doADConvert
```
public void doADConvert(int channel,
                        byte[] state)
                 throws OneWireIOException,
                        OneWireException
```
    Performs voltage conversion on specified channel. The method getADVoltage() can be used to read the result of the conversion.
    
    Specified by:
    
    doADConvert in interface ADContainer
    
    Parameters:
    
    channel - channel in the range [0 to (getNumberChannels() - 1)]
    
    state - current state of this device returned from readDevice()
    
    Throws:
    
    OneWireIOException - Data was not written correctly
    
    OneWireException - Could not find part
    
    See Also:
    
    OneWireSensor.readDevice(), ADContainer.getADVoltage(int,byte[])
  - doADConvert
```
public void doADConvert(boolean[] doConvert,
                        byte[] state)
                 throws OneWireIOException,
                        OneWireException
```
    Performs voltage conversion on all specified channels. The method getADVoltage() can be used to read the result of the conversion. This A/D must support multi-channel read canMultiChannelRead() if there are more then 1 channel is specified.
    
    Specified by:
    
    doADConvert in interface ADContainer
    
    Parameters:
    
    doConvert - which channels to perform conversion on.
    
    state - current state of this device returned from readDevice()
    
    Throws:
    
    OneWireIOException - Data was not written correctly
    
    OneWireException - Could not find part
    
    See Also:
    
    OneWireSensor.readDevice(), ADContainer.getADVoltage(byte[]), ADContainer.canADMultiChannelRead()
  - doADConvert
```
public void doADConvert(int channel,
                        int preset,
                        byte[] state)
                 throws OneWireIOException,
                        OneWireException,
                        java.lang.IllegalArgumentException
```
    Performs voltage conversion on specified channel. The method getADVoltage() can be used to read the result of the conversion.
    
    Parameters:
    
    channel - 0,1,2,3 representing the channels A,B,C,D
    
    preset - preset value: NO_PRESET (0), PRESET_TO_ZEROS (1), and PRESET_TO_ONES (2)
    
    state - state of this device returned from readDevice()
    
    Throws:
    
    OneWireIOException - Data could not be written correctly
    
    OneWireException - Could not find part
    
    java.lang.IllegalArgumentException - Invalid channel number passed
  - doADConvert
```
public void doADConvert(boolean[] doConvert,
                        int[] preset,
                        byte[] state)
                 throws OneWireIOException,
                        OneWireException
```
    Performs voltage conversion on all specified channels. The method getADVoltage() can be used to read the result of the conversion.
    
    Parameters:
    
    doConvert - which channels to perform conversion on
    
    preset - preset values NO_PRESET (0), PRESET_TO_ZEROS (1), and PRESET_TO_ONES (2)
    
    state - current state of this device returned from readDevice()
    
    Throws:
    
    OneWireIOException - Data could not be written correctly
    
    OneWireException - Could not find part
  - getADAlarm
```
public double getADAlarm(int channel,
                         int alarmType,
                         byte[] state)
```
    Extracts the alarm voltage value of the specified channel from the provided state buffer. The state buffer is retrieved from the readDevice() method.
    
    Specified by:
    
    getADAlarm in interface ADContainer
    
    Parameters:
    
    channel - channel in the range [0 to (getNumberChannels() - 1)]
    
    alarmType - desired alarm, ALARM_HIGH (1) or ALARM_LOW (0)
    
    state - current state of this device returned from readDevice()
    
    Returns:
    
    alarm value in volts
    
    Throws:
    
    java.lang.IllegalArgumentException - Invalid channel number passed
    
    See Also:
    
    OneWireSensor.readDevice(), ADContainer.hasADAlarms()
  - getADAlarmEnable
```
public boolean getADAlarmEnable(int channel,
                                int alarmType,
                                byte[] state)
```
    Extracts the alarm enable value of the specified channel from the provided state buffer. The state buffer is retrieved from the readDevice() method.
    
    Specified by:
    
    getADAlarmEnable in interface ADContainer
    
    Parameters:
    
    channel - channel in the range [0 to (getNumberChannels() - 1)]
    
    alarmType - desired alarm, ALARM_HIGH (1) or ALARM_LOW (0)
    
    state - current state of the state returned from readDevice()
    
    Returns:
    
    true if specified alarm is enabled
    
    Throws:
    
    java.lang.IllegalArgumentException - Invalid channel number passed
    
    See Also:
    
    OneWireSensor.readDevice(), ADContainer.hasADAlarms()
  - hasADAlarmed
```
public boolean hasADAlarmed(int channel,
                            int alarmType,
                            byte[] state)
```
    Checks the alarm event value of the specified channel from the provided state buffer. The state buffer is retrieved from the readDevice() method.
    
    Specified by:
    
    hasADAlarmed in interface ADContainer
    
    Parameters:
    
    channel - channel in the range [0 to (getNumberChannels() - 1)]
    
    alarmType - desired alarm, ALARM_HIGH (1) or ALARM_LOW (0)
    
    state - current state of the state returned from readDevice()
    
    Returns:
    
    true if specified alarm occurred
    
    Throws:
    
    java.lang.IllegalArgumentException - Invalid channel number passed
    
    See Also:
    
    OneWireSensor.readDevice(), ADContainer.hasADAlarms(), ADContainer.getADAlarmEnable(int,int,byte[]), ADContainer.setADAlarmEnable(int,int,boolean,byte[])
  - getADResolution
```
public double getADResolution(int channel,
                              byte[] state)
```
    Extracts the conversion resolution of the specified channel from the provided state buffer expressed in volts. The state is retrieved from the readDevice() method.
    
    Specified by:
    
    getADResolution in interface ADContainer
    
    Parameters:
    
    channel - channel in the range [0 to (getNumberChannels() - 1)]
    
    state - current state of the state returned from readDevice()
    
    Returns:
    
    resolution of channel in volts
    
    Throws:
    
    java.lang.IllegalArgumentException - Invalid channel number passed
    
    See Also:
    
    ADContainer.getADResolutions(int,double), ADContainer.setADResolution(int,double,byte[])
  - getADRange
```
public double getADRange(int channel,
                         byte[] state)
```
    Extracts the input voltage range of the specified channel from the provided state buffer. The state buffer is retrieved from the readDevice() method.
    
    Specified by:
    
    getADRange in interface ADContainer
    
    Parameters:
    
    channel - channel in the range [0 to (getNumberChannels() - 1)]
    
    state - current state of the state returned from readDevice()
    
    Returns:
    
    A/D input voltage range
    
    Throws:
    
    java.lang.IllegalArgumentException - Invalid channel number passed
    
    See Also:
    
    ADContainer.getADRanges(int), ADContainer.setADRange(int,double,byte[])
  - isOutputEnabled
```
public boolean isOutputEnabled(int channel,
                               byte[] state)
                        throws java.lang.IllegalArgumentException
```
    Detects if the output is enabled for the specified channel from the provided register buffer. The register buffer is retrieved from the readDevice() method.
    
    Parameters:
    
    channel - channel in the range [0 to (getNumberChannels() - 1)]
    
    state - current state of the device returned from readDevice()
    
    Returns:
    
    true if output is enabled on specified channel
    
    Throws:
    
    java.lang.IllegalArgumentException - Invalid channel number passed
  - getOutputState
```
public boolean getOutputState(int channel,
                              byte[] state)
                       throws java.lang.IllegalArgumentException
```
    Detects if the output is enabled for the specified channel from the provided register buffer. The register buffer is retrieved from the readDevice() method.
    
    Parameters:
    
    channel - channel in the range [0 to (getNumberChannels() - 1)]
    
    state - current state of the device returned from readDevice()
    
    Returns:
    
    false if output is conducting to ground and true if not conducting
    
    Throws:
    
    java.lang.IllegalArgumentException - Invalid channel number passed
  - getDevicePOR
```
public boolean getDevicePOR(byte[] state)
```
    Detects if this device has seen a Power-On-Reset (POR). If this has occurred it may be necessary to set the state of the device to the desired values. The register buffer is retrieved from the readDevice() method.
    
    Parameters:
    
    state - current state of the device returned from readDevice()
    
    Returns:
    
    false if output is conducting to ground and true if not conducting
  - isPowerExternal
```
public boolean isPowerExternal(byte[] state)
```
    Extracts the state of the external power indicator from the provided register buffer. Use 'setPower' to set or clear the external power indicator flag. The register buffer is retrieved from the readDevice() method.
    
    Parameters:
    
    state - current state of the device returned from readDevice()
    
    Returns:
    
    true if set to external power operation
  - setADAlarm
```
public void setADAlarm(int channel,
                       int alarmType,
                       double alarm,
                       byte[] state)
```
    Sets the alarm voltage value of the specified channel in the provided state buffer. The state buffer is retrieved from the readDevice() method. The method writeDevice() must be called to finalize these changes to the device. Note that multiple 'set' methods can be called before one call to writeDevice().
    
    Specified by:
    
    setADAlarm in interface ADContainer
    
    Parameters:
    
    channel - channel in the range [0 to (getNumberChannels() - 1)]
    
    alarmType - desired alarm, ALARM_HIGH (1) or ALARM_LOW (0)
    
    alarm - alarm value (will be reduced to 8 bit resolution)
    
    state - current state of this device returned from readDevice()
    
    Throws:
    
    java.lang.IllegalArgumentException - Invalid channel number passed
    
    See Also:
    
    OneWireSensor.writeDevice(byte[]), ADContainer.hasADAlarms(), ADContainer.getADAlarm(int,int,byte[]), ADContainer.getADAlarmEnable(int,int,byte[]), ADContainer.setADAlarmEnable(int,int,boolean,byte[]), ADContainer.hasADAlarmed(int,int,byte[])
  - setADAlarmEnable
```
public void setADAlarmEnable(int channel,
                             int alarmType,
                             boolean alarmEnable,
                             byte[] state)
```
    Sets the alarm enable value of the specified channel in the provided state buffer. The state buffer is retrieved from the readDevice() method. The method writeDevice() must be called to finalize these changes to the device. Note that multiple 'set' methods can be called before one call to writeDevice().
    
    Specified by:
    
    setADAlarmEnable in interface ADContainer
    
    Parameters:
    
    channel - channel in the range [0 to (getNumberChannels() - 1)]
    
    alarmType - desired alarm, ALARM_HIGH (1) or ALARM_LOW (0)
    
    alarmEnable - alarm enable value
    
    state - current state of this device returned from readDevice()
    
    Throws:
    
    java.lang.IllegalArgumentException - Invalid channel number passed
    
    See Also:
    
    OneWireSensor.writeDevice(byte[]), ADContainer.hasADAlarms(), ADContainer.getADAlarm(int,int,byte[]), ADContainer.setADAlarm(int,int,double,byte[]), ADContainer.getADAlarmEnable(int,int,byte[]), ADContainer.hasADAlarmed(int,int,byte[])
  - setADResolution
```
public void setADResolution(int channel,
                            double resolution,
                            byte[] state)
```
    Sets the conversion resolution value for the specified channel in the provided state buffer. The state buffer is retrieved from the readDevice() method. The method writeDevice() must be called to finalize these changes to the device. Note that multiple 'set' methods can be called before one call to writeDevice().
    
    Specified by:
    
    setADResolution in interface ADContainer
    
    Parameters:
    
    channel - channel in the range [0 to (getNumberChannels() - 1)]
    
    resolution - resolution to use in volts
    
    state - current state of this device returned from readDevice()
    
    Throws:
    
    java.lang.IllegalArgumentException - Invalid channel number passed
    
    See Also:
    
    ADContainer.getADResolutions(int,double), ADContainer.getADResolution(int,byte[])
  - setADRange
```
public void setADRange(int channel,
                       double range,
                       byte[] state)
```
    Sets the input range for the specified channel in the provided state buffer. The state buffer is retrieved from the readDevice() method. The method writeDevice() must be called to finalize these changes to the device. Note that multiple 'set' methods can be called before one call to writeDevice().
    
    Specified by:
    
    setADRange in interface ADContainer
    
    Parameters:
    
    channel - channel in the range [0 to (getNumberChannels() - 1)]
    
    range - max volt range, use getRanges() method to get available ranges
    
    state - current state of this device returned from readDevice()
    
    Throws:
    
    java.lang.IllegalArgumentException - Invalid channel number passed
    
    See Also:
    
    ADContainer.getADRanges(int), ADContainer.getADRange(int,byte[])
  - setOutput
```
public void setOutput(int channel,
                      boolean outputEnable,
                      boolean outputState,
                      byte[] state)
```
    Sets the output enable and state for the specified channel in the provided register buffer. The register buffer is retrieved from the readDevice() method. The method writeDevice() must be called to finalize these changes to the device. Note that multiple 'set' methods can be called before one call to writeDevice().
    
    Parameters:
    
    channel - channel in the range [0 to (getNumberChannels() - 1)]
    
    outputEnable - true if output is enabled
    
    outputState - false if output is conducting to ground and true if not conducting. This parameter is not used if outputEnable is false
    
    state - current state of the device returned from readDevice()
  - setPower
```
public void setPower(boolean external,
                     byte[] state)
```
    Sets or clears the external power flag in the provided register buffer. The register buffer is retrieved from the readDevice() method. The method writeDevice() must be called to finalize these changes to the device. Note that multiple 'set' methods can be called before one call to writeDevice().
    
    Parameters:
    
    external - true if setting external power is used
    
    state - current state of this device returned from readDevice()
  - interpretVoltage
```
public static double interpretVoltage(long rawVoltage,
                                      double range)
```
    Converts a raw voltage long value for the DS2450 into a valid voltage. Requires the max voltage value.
    
    Parameters:
    
    rawVoltage - raw voltage
    
    range - max voltage
    
    Returns:
    
    calculated voltage based on the range
  - voltageToInt
```
public static int voltageToInt(double voltage,
                               double range)
```
    Converts a voltage double value to the DS2450 specific int value. Requires the max voltage value.
    
    Parameters:
    
    voltage - voltage
    
    range - max voltage
    
    Returns:
    
    the DS2450 voltage

Class OneWireContainer20

Features

Usage

Note

DataSheet

Field Summary

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

Fields inherited from interface com.dalsemi.onewire.container.ADContainer

Constructor Summary

Method Summary

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

Methods inherited from class java.lang.Object

Field Detail

BITMAP_OFFSET

ALARM_OFFSET

EXPOWER_OFFSET

CHANNELA

CHANNELB

CHANNELC

CHANNELD

NO_PRESET

PRESET_TO_ZEROS

PRESET_TO_ONES

NUM_CHANNELS

Constructor Detail

OneWireContainer20

OneWireContainer20

OneWireContainer20

OneWireContainer20

Method Detail

getName

getAlternateNames

getDescription

getMaxSpeed

getMemoryBanks

getNumberADChannels

hasADAlarms

getADRanges

getADResolutions

canADMultiChannelRead

readDevice

writeDevice

getADVoltage

getADVoltage

doADConvert

doADConvert

doADConvert

doADConvert

getADAlarm

getADAlarmEnable

hasADAlarmed

getADResolution

getADRange

isOutputEnabled

getOutputState

getDevicePOR

isPowerExternal

setADAlarm

setADAlarmEnable

setADResolution

setADRange

setOutput

setPower

interpretVoltage

voltageToInt