NXTCommand (leJOS EV3 API documentation)

java.lang.Object
- lejos.remote.nxt.NXTCommand

All Implemented Interfaces:

NXTProtocol
```
public class NXTCommand
extends java.lang.Object
implements NXTProtocol
```
Sends LCP requests to the NXT and receives replies. Uses an object that implements the NXTComm interface for low-level communication.

Field Summary

Fields
Modifier and Type Field and Description

static int MAX_FILENAMELENGTH
- Fields inherited from interface lejos.remote.nxt.NXTProtocol
  ANGLE, ANGLESTEPSMODE, BOOLEANMODE, BOOT, BRAKE, CELSIUSMODE, CLOSE, CUSTOM, DELETE, DELETE_USER_FLASH, DIRECT_COMMAND_NOREPLY, DIRECT_COMMAND_REPLY, FAHRENHEITMODE, FIND_FIRST, FIND_NEXT, GET_BATTERY_LEVEL, GET_CURRENT_PROGRAM_NAME, GET_DEVICE_INFO, GET_FIRMWARE_VERSION, GET_INPUT_VALUES, GET_OUTPUT_STATE, HIGH_SPEED_BUFFER, KEEP_ALIVE, LIGHT_ACTIVE, LIGHT_INACTIVE, LOWSPEED, LOWSPEED_9V, LS_GET_STATUS, LS_READ, LS_WRITE, MESSAGE_READ, MESSAGE_WRITE, MODEMASK, MOTOR_RUN_STATE_IDLE, MOTOR_RUN_STATE_RAMPDOWN, MOTOR_RUN_STATE_RAMPUP, MOTOR_RUN_STATE_RUNNING, MOTORON, NO_OF_SENSOR_TYPES, NO_SENSOR, NXJ_DEFRAG, NXJ_DISCONNECT, NXJ_GET_AUTO_RUN, NXJ_GET_DEFAULT_PROGRAM, NXJ_GET_KEY_CLICK_VOLUME, NXJ_GET_SLEEP_TIME, NXJ_GET_VERSION, NXJ_GET_VOLUME, NXJ_PACKET_MODE, NXJ_SET_AUTO_RUN, NXJ_SET_DEFAULT_PROGRAM, NXJ_SET_KEY_CLICK_VOLUME, NXJ_SET_SLEEP_TIME, NXJ_SET_VOLUME, OPEN_APPEND_DATA, OPEN_READ, OPEN_READ_LINEAR, OPEN_WRITE, OPEN_WRITE_DATA, OPEN_WRITE_LINEAR, PCTFULLSCALEMODE, PERIODCOUNTERMODE, PLAY_SOUND_FILE, PLAY_TONE, POLL, POLL_BUFFER, POLL_LENGTH, RAWMODE, READ, REFLECTION, REGULATED, REGULATION_MODE_IDLE, REGULATION_MODE_MOTOR_SPEED, REGULATION_MODE_MOTOR_SYNC, REPLY_COMMAND, RESET_MOTOR_POSITION, RESET_SCALED_INPUT_VALUE, SET_BRICK_NAME, SET_INPUT_MODE, SET_OUTPUT_STATE, SLOPEMASK, SOUND_DB, SOUND_DBA, START_PROGRAM, STOP_PROGRAM, STOP_SOUND_PLAYBACK, SWITCH, SYSTEM_COMMAND_NOREPLY, SYSTEM_COMMAND_REPLY, TEMPERATURE, TRANSITIONCNTMODE, WRITE

Fields
Modifier and Type	Field and Description
`static int`	`MAX_FILENAMELENGTH`

Constructor Summary

Constructors
Constructor and Description

NXTCommand(NXTCommRequest nxtComm)
Create a NXTCommand object.

Constructors
Constructor and Description
`NXTCommand(NXTCommRequest nxtComm)` Create a NXTCommand object.

Method Summary

All Methods Instance Methods Concrete Methods Deprecated Methods
Modifier and Type	Method and Description
`void`	`boot()` Put the NXT into SAMBA mode, ready to update the firmware.
`void`	`close()` Deprecated. call disconnect, then close the underlying NXTComm
`byte`	`closeFile(byte handle)` Closes an open file.
`byte`	`defrag()` A NXJ extension to defrag the file system
`byte`	`delete(java.lang.String fileName)` Delete a file on the NXT
`byte`	`deleteUserFlash()` Deletes user flash memory.
`void`	`disconnect()` Tell the NXT that the connection is aborted.
`FileInfo`	`findFirst(java.lang.String wildCard)` Find the first file on the NXT.
`FileInfo`	`findNext(byte handle)` Find the next file on the NXT
`boolean`	`getAutoRun()` leJOS-specific command to get the auto run setring
`int`	`getBatteryLevel()` Get the battery reading
`java.lang.String`	`getCurrentProgramName()` Name of current running program.
`java.lang.String`	`getDefaultProgram()` leJOS-specific command to get the default program name
`DeviceInfo`	`getDeviceInfo()` Gets device information
`FirmwareInfo`	`getFirmwareVersion()` Get the fimrware version.
`java.lang.String`	`getFriendlyName()` Get the friendly name of the NXT
`InputValues`	`getInputValues(int port)` Get input values for a specific NXT sensor port
`int`	`getKeyClickVolume()` leJOS-specific command to get the master volume level
`java.lang.String`	`getLocalAddress()` Get the local address of the NXT.
`NXJFirmwareInfo`	`getNXJFirmwareInfo()` leJOS-specific command to get the NXJ firmware and menu information
`java.lang.String`	`getNXJFirmwareVersion()` leJOS-specific command to get the NXJ firmware version
`java.lang.String`	`getNXJMenuVersion()` leJOS-specific command to get the NXJ start-up menu version
`OutputState`	`getOutputState(int port)` Retrieves the current output state for a port.
`int`	`getSleepTime()` leJOS-specific method to get the menu sleep time
`int`	`getTachoCount(int port)` Retrieves tacho count.
`int`	`getVolume()` leJOS-specific command to get the master volume level
`boolean`	`isOpen()` Test is connection is open
`byte[]`	`LSGetStatus(byte port)` Returns the status for an Inter-Integrated Circuit (I2C) sensor (the ultrasound sensor) via the Low Speed (LS) data port.
`byte[]`	`LSRead(byte port)` Reads data from an Inter-Integrated Circuit (I2C) sensor (the ultrasound sensor) via the Low Speed (LS) data port.
`byte`	`LSWrite(byte port, byte[] txData, byte rxDataLength)` Used to request data from an Inter-Integrated Circuit (I2C) sensor (the ultrasound sensor) via the Low Speed (LS) data port.
`byte[]`	`messageRead(byte remoteInbox, byte localInbox, boolean remove)` Read message.
`byte`	`messageWrite(byte[] message, byte inbox)` Sends a message to an inbox on the NXT for storage(?) For future reference, message size must be capped at 59 for USB.
`FileInfo`	`openRead(java.lang.String fileName)` Opens a file on the NXT for reading.
`byte`	`openWrite(java.lang.String fileName, int size)` Opens a file on the NXT for writing.
`byte`	`playSoundFile(java.lang.String fileName, boolean repeat)`
`byte`	`playTone(int frequency, int duration)` Plays a tone on NXT speaker.
`int`	`readFile(byte handle, byte[] data, int offset, int length)` Returns requested number of bytes from a file.
`byte`	`resetMotorPosition(int port, boolean relative)` Resets either RotationCount or BlockTacho
`byte`	`setAutoRun(boolean on)` leJOS-specific command to set auto-run on or off
`byte`	`setDefaultProgram(java.lang.String name)` leJOS-specific command to set the default program
`byte`	`setFriendlyName(java.lang.String name)` Set the friendly name of the NXT
`byte`	`setInputMode(int port, int sensorType, int sensorMode)` Tells the NXT what type of sensor you are using and the mode to operate in.
`byte`	`setKeyClickVolume(byte volume)` leJOS-specific command to set the key click volume level
`byte`	`setOutputState(int port, byte power, int mode, int regulationMode, int turnRatio, int runState, int tachoLimit)`
`byte`	`setSleepTime(byte seconds)` leJOS-specific command to the the sleep time for the menu
`void`	`setVerify(boolean verify)` Toggle the verify flag.
`byte`	`setVolume(byte volume)` leJOS-specific command to set the master volume level
`byte`	`startProgram(java.lang.String fileName)` Starts a program already on the NXT.
`byte`	`stopProgram()` Forces the currently executing program to stop.
`byte`	`stopSoundPlayback()` Stops sound file playing.
`java.lang.String`	`uploadFile(java.io.File file, java.lang.String nxtFileName)` Upload a file to the NXT
`byte`	`writeFile(byte handle, byte[] data, int offset, int length)` Write data to the file

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

- Field Detail
  - MAX_FILENAMELENGTH
```
public static final int MAX_FILENAMELENGTH
```
    See Also:
    
    Constant Field Values
- Constructor Detail
  - NXTCommand
```
public NXTCommand(NXTCommRequest nxtComm)
```
    Create a NXTCommand object.
- Method Detail
  - setVerify
```
public void setVerify(boolean verify)
```
    Toggle the verify flag.
    
    Parameters:
    
    verify - true causes all commands to return a response.
  - startProgram
```
public byte startProgram(java.lang.String fileName)
                  throws java.io.IOException
```
    Starts a program already on the NXT.
    
    Parameters:
    
    fileName - the file name
    
    Returns:
    
    the status
    
    Throws:
    
    java.io.IOException
  - stopProgram
```
public byte stopProgram()
                 throws java.io.IOException
```
    Forces the currently executing program to stop. Not implemented by leJOS NXJ.
    
    Returns:
    
    Error value
    
    Throws:
    
    java.io.IOException
  - getCurrentProgramName
```
public java.lang.String getCurrentProgramName()
                                       throws java.io.IOException
```
    Name of current running program. Does not work with leJOS NXJ.
    
    Returns:
    
    the program name
    
    Throws:
    
    java.io.IOException
  - openRead
```
public FileInfo openRead(java.lang.String fileName)
                  throws java.io.IOException
```
    Opens a file on the NXT for reading. Returns a handle number and file size, enclosed in a FileInfo object.
    
    Parameters:
    
    fileName - e.g. "Woops.wav"
    
    Returns:
    
    fileInfo object giving details of the file
    
    Throws:
    
    java.io.IOException
  - openWrite
```
public byte openWrite(java.lang.String fileName,
                      int size)
               throws java.io.IOException
```
    Opens a file on the NXT for writing.
    
    Parameters:
    
    fileName - e.g. "Woops.wav"
    
    Returns:
    
    File Handle number
    
    Throws:
    
    java.io.IOException
  - closeFile
```
public byte closeFile(byte handle)
               throws java.io.IOException
```
    Closes an open file.
    
    Parameters:
    
    handle - File handle number.
    
    Returns:
    
    Error code 0 = success
    
    Throws:
    
    java.io.IOException
  - delete
```
public byte delete(java.lang.String fileName)
            throws java.io.IOException
```
    Delete a file on the NXT
    
    Parameters:
    
    fileName - the name of the file
    
    Returns:
    
    the error code 0 = success
    
    Throws:
    
    java.io.IOException
  - findFirst
```
public FileInfo findFirst(java.lang.String wildCard)
                   throws java.io.IOException
```
    Find the first file on the NXT.
    
    Parameters:
    
    wildCard - [filename].[extension], *.[extension], [filename].*, *.*
    
    Returns:
    
    fileInfo object giving details of the file
    
    Throws:
    
    java.io.IOException
  - findNext
```
public FileInfo findNext(byte handle)
                  throws java.io.IOException
```
    Find the next file on the NXT
    
    Parameters:
    
    handle - Handle number from the previous found file or from the Find First command.
    
    Returns:
    
    fileInfo object giving details of the file
    
    Throws:
    
    java.io.IOException
  - getBatteryLevel
```
public int getBatteryLevel()
                    throws java.io.IOException
```
    Get the battery reading
    
    Returns:
    
    the battery level in millivolts
    
    Throws:
    
    java.io.IOException
  - close
```
@Deprecated
public void close()
                        throws java.io.IOException
```
    Deprecated. call disconnect, then close the underlying NXTComm
    
    Call the close() command when your program ends, otherwise you will have to turn the NXT brick off/on before you run another program.
    
    Throws:
    
    java.io.IOException
  - disconnect
```
public void disconnect()
                throws java.io.IOException
```
    Tell the NXT that the connection is aborted.
    
    Throws:
    
    java.io.IOException
  - boot
```
public void boot()
          throws java.io.IOException
```
    Put the NXT into SAMBA mode, ready to update the firmware. Marks this NXTCommand object as closed. Does never never wait for a reply from the NXT.
    
    Throws:
    
    java.io.IOException
  - writeFile
```
public byte writeFile(byte handle,
                      byte[] data,
                      int offset,
                      int length)
               throws java.io.IOException
```
    Write data to the file
    
    Parameters:
    
    handle - the file handle
    
    data - the data to write
    
    Returns:
    
    the status value
    
    Throws:
    
    java.io.IOException
  - uploadFile
```
public java.lang.String uploadFile(java.io.File file,
                                   java.lang.String nxtFileName)
                            throws java.io.IOException
```
    Upload a file to the NXT
    
    Parameters:
    
    file - the file to upload
    
    nxtFileName - the name of the file on the NXT
    
    Returns:
    
    a message saying how long it took to upload the file
    
    Throws:
    
    java.io.IOException
  - readFile
```
public int readFile(byte handle,
                    byte[] data,
                    int offset,
                    int length)
             throws java.io.IOException
```
    Returns requested number of bytes from a file. File must first be opened using the openRead() command.
    
    Parameters:
    
    handle - File handle number (from openRead method)
    
    data - Buffer to which data is written
    
    offset - Index of first byte to be overwritten
    
    length - Number of bytes to read
    
    Returns:
    
    number of bytes read
    
    Throws:
    
    java.io.IOException
  - defrag
```
public byte defrag()
            throws java.io.IOException
```
    A NXJ extension to defrag the file system
    
    Returns:
    
    the status byte
    
    Throws:
    
    java.io.IOException
  - getFriendlyName
```
public java.lang.String getFriendlyName()
                                 throws java.io.IOException
```
    Get the friendly name of the NXT
    
    Returns:
    
    the friendly name
    
    Throws:
    
    java.io.IOException
  - setFriendlyName
```
public byte setFriendlyName(java.lang.String name)
                     throws java.io.IOException
```
    Set the friendly name of the NXT
    
    Parameters:
    
    name - the friendly name
    
    Returns:
    
    the status byte
    
    Throws:
    
    java.io.IOException
  - getLocalAddress
```
public java.lang.String getLocalAddress()
                                 throws java.io.IOException
```
    Get the local address of the NXT.
    
    Returns:
    
    the address (used by USB and Bluetooth)
    
    Throws:
    
    java.io.IOException
  - getInputValues
```
public InputValues getInputValues(int port)
                           throws java.io.IOException
```
    Get input values for a specific NXT sensor port
    
    Parameters:
    
    port - the port number
    
    Returns:
    
    the InputValues structure
    
    Throws:
    
    java.io.IOException
  - getOutputState
```
public OutputState getOutputState(int port)
                           throws java.io.IOException
```
    Retrieves the current output state for a port.
    
    Parameters:
    
    port - - 0 to 3
    
    Returns:
    
    OutputState - returns a container object for output state variables.
    
    Throws:
    
    java.io.IOException
  - getTachoCount
```
public int getTachoCount(int port)
                  throws java.io.IOException
```
    Retrieves tacho count.
    
    Parameters:
    
    port - - 0 to 3
    
    Returns:
    
    tacho count
    
    Throws:
    
    java.io.IOException
  - setInputMode
```
public byte setInputMode(int port,
                         int sensorType,
                         int sensorMode)
                  throws java.io.IOException
```
    Tells the NXT what type of sensor you are using and the mode to operate in.
    
    Parameters:
    
    port - - 0 to 3
    
    sensorType - - Enumeration for sensor type (see NXTProtocol)
    
    sensorMode - - Enumeration for sensor mode (see NXTProtocol)
    
    Throws:
    
    java.io.IOException
  - LSGetStatus
```
public byte[] LSGetStatus(byte port)
                   throws java.io.IOException
```
    Returns the status for an Inter-Integrated Circuit (I2C) sensor (the ultrasound sensor) via the Low Speed (LS) data port. The port must first be configured to type LOWSPEED or LOWSPEED_9V.
    
    Parameters:
    
    port - 0-3
    
    Returns:
    
    byte[0] = status, byte[1] = Bytes Ready (count of available bytes to read)
    
    Throws:
    
    java.io.IOException
  - LSRead
```
public byte[] LSRead(byte port)
              throws java.io.IOException
```
    Reads data from an Inter-Integrated Circuit (I2C) sensor (the ultrasound sensor) via the Low Speed (LS) data port. The port must first be configured to type LOWSPEED or LOWSPEED_9V. Data lengths are limited to 16 bytes per command. The response will also contain 16 bytes, with invalid data padded with zeros.
    
    Parameters:
    
    port -
    
    Returns:
    
    the response
    
    Throws:
    
    java.io.IOException
  - LSWrite
```
public byte LSWrite(byte port,
                    byte[] txData,
                    byte rxDataLength)
             throws java.io.IOException
```
    Used to request data from an Inter-Integrated Circuit (I2C) sensor (the ultrasound sensor) via the Low Speed (LS) data port. The port must first be configured to type LOWSPEED or LOWSPEED_9V. Data lengths are limited to 16 bytes per command. Rx (receive) Data Length MUST be specified in the write command since reading from the device is done on a master-slave basis.
    
    Parameters:
    
    txData - Transmitted data.
    
    rxDataLength - Receive data length.
    
    port - 0-3
    
    Returns:
    
    the status (0 = success)
    
    Throws:
    
    java.io.IOException
  - messageRead
```
public byte[] messageRead(byte remoteInbox,
                          byte localInbox,
                          boolean remove)
                   throws java.io.IOException
```
    Read message.
    
    Parameters:
    
    remoteInbox - 0-9
    
    localInbox - 0-9
    
    remove - True clears the message from the remote inbox.
    
    Returns:
    
    the message as an array of bytes, excluding the trailing null-terminator or null when queue is empty
    
    Throws:
    
    java.io.IOException
  - messageWrite
```
public byte messageWrite(byte[] message,
                         byte inbox)
                  throws java.io.IOException
```
    Sends a message to an inbox on the NXT for storage(?) For future reference, message size must be capped at 59 for USB. A null terminator is automatically appended and should not be included in the message. UNTESTED
    
    Parameters:
    
    message - String to send.
    
    inbox - Inbox Number 0 - 9
    
    Returns:
    
    the status (0 = success)
    
    Throws:
    
    java.io.IOException
  - playTone
```
public byte playTone(int frequency,
                     int duration)
              throws java.io.IOException
```
    Plays a tone on NXT speaker. If a new tone is sent while the previous tone is playing, the new tone command will stop the old tone command.
    
    Parameters:
    
    frequency - - 100 to 2000?
    
    duration - - In milliseconds.
    
    Returns:
    
    - Returns true if command worked, false if it failed.
    
    Throws:
    
    java.io.IOException
  - playSoundFile
```
public byte playSoundFile(java.lang.String fileName,
                          boolean repeat)
                   throws java.io.IOException
```
    Throws:
    
    java.io.IOException
  - stopSoundPlayback
```
public byte stopSoundPlayback()
                       throws java.io.IOException
```
    Stops sound file playing.
    
    Returns:
    
    the status (0 = success)
    
    Throws:
    
    java.io.IOException
  - resetMotorPosition
```
public byte resetMotorPosition(int port,
                               boolean relative)
                        throws java.io.IOException
```
    Resets either RotationCount or BlockTacho
    
    Parameters:
    
    port - Output port (0-2)
    
    relative - TRUE: BlockTacho, FALSE: RotationCount
    
    Returns:
    
    the status (0 = success)
    
    Throws:
    
    java.io.IOException
  - setOutputState
```
public byte setOutputState(int port,
                           byte power,
                           int mode,
                           int regulationMode,
                           int turnRatio,
                           int runState,
                           int tachoLimit)
                    throws java.io.IOException
```
    Parameters:
    
    port - - Output port (0 - 2 or 0xFF for all three)
    
    power - - Setpoint for power. (-100 to 100)
    
    mode - - Setting the modes MOTORON, BRAKE, and/or REGULATED. This parameter is a bitfield, so to put it in brake mode and regulated, use BRAKEMODE + REGULATED
    
    regulationMode - - see NXTProtocol for enumerations
    
    turnRatio - - Need two motors? (-100 to 100)
    
    runState - - see NXTProtocol for enumerations
    
    tachoLimit - - Number of degrees(?) to rotate before stopping.
    
    Returns:
    
    the status (0 = success)
    
    Throws:
    
    java.io.IOException
  - getDeviceInfo
```
public DeviceInfo getDeviceInfo()
                         throws java.io.IOException
```
    Gets device information
    
    Returns:
    
    a DeviceInfo structure
    
    Throws:
    
    java.io.IOException
  - getFirmwareVersion
```
public FirmwareInfo getFirmwareVersion()
                                throws java.io.IOException
```
    Get the fimrware version. leJOS NXJ returns the version of the LEGO firmware that it emulates, not its own version number.
    
    Returns:
    
    a FirmwareInfo structure.
    
    Throws:
    
    java.io.IOException
  - deleteUserFlash
```
public byte deleteUserFlash()
                     throws java.io.IOException
```
    Deletes user flash memory. Not implemented by leJOS NXJ.
    
    Returns:
    
    the status (0 = success)
    
    Throws:
    
    java.io.IOException
  - setDefaultProgram
```
public byte setDefaultProgram(java.lang.String name)
                       throws java.io.IOException
```
    leJOS-specific command to set the default program
    
    Parameters:
    
    name - the default program name
    
    Returns:
    
    the status (0 is success)
    
    Throws:
    
    java.io.IOException
  - setVolume
```
public byte setVolume(byte volume)
               throws java.io.IOException
```
    leJOS-specific command to set the master volume level
    
    Parameters:
    
    volume - the master volume level
    
    Returns:
    
    the status (0 = success)
    
    Throws:
    
    java.io.IOException
  - setKeyClickVolume
```
public byte setKeyClickVolume(byte volume)
                       throws java.io.IOException
```
    leJOS-specific command to set the key click volume level
    
    Parameters:
    
    volume - the key click volume level
    
    Returns:
    
    the status (0 = success)
    
    Throws:
    
    java.io.IOException
  - setAutoRun
```
public byte setAutoRun(boolean on)
                throws java.io.IOException
```
    leJOS-specific command to set auto-run on or off
    
    Parameters:
    
    on - true = on, false = off
    
    Returns:
    
    the status (0 = success)
    
    Throws:
    
    java.io.IOException
  - getVolume
```
public int getVolume()
              throws java.io.IOException
```
    leJOS-specific command to get the master volume level
    
    Returns:
    
    the master volume level
    
    Throws:
    
    java.io.IOException
  - getKeyClickVolume
```
public int getKeyClickVolume()
                      throws java.io.IOException
```
    leJOS-specific command to get the master volume level
    
    Returns:
    
    the master volume level
    
    Throws:
    
    java.io.IOException
  - getAutoRun
```
public boolean getAutoRun()
                   throws java.io.IOException
```
    leJOS-specific command to get the auto run setring
    
    Returns:
    
    the auto run setting
    
    Throws:
    
    java.io.IOException
  - getNXJFirmwareVersion
```
public java.lang.String getNXJFirmwareVersion()
                                       throws java.io.IOException
```
    leJOS-specific command to get the NXJ firmware version
    
    Returns:
    
    a string with major version, minor version, and patch level and revision
    
    Throws:
    
    java.io.IOException
  - getNXJMenuVersion
```
public java.lang.String getNXJMenuVersion()
                                   throws java.io.IOException
```
    leJOS-specific command to get the NXJ start-up menu version
    
    Returns:
    
    a string with major version, minor version, patch level and revision
    
    Throws:
    
    java.io.IOException
  - getNXJFirmwareInfo
```
public NXJFirmwareInfo getNXJFirmwareInfo()
                                   throws java.io.IOException
```
    leJOS-specific command to get the NXJ firmware and menu information
    
    Returns:
    
    a NXJFirmwareInfo object containing all the version numbers
    
    Throws:
    
    java.io.IOException
  - getSleepTime
```
public int getSleepTime()
                 throws java.io.IOException
```
    leJOS-specific method to get the menu sleep time
    
    Returns:
    
    the sleep time in seconds
    
    Throws:
    
    java.io.IOException
  - getDefaultProgram
```
public java.lang.String getDefaultProgram()
                                   throws java.io.IOException
```
    leJOS-specific command to get the default program name
    
    Returns:
    
    the default program name
    
    Throws:
    
    java.io.IOException
  - setSleepTime
```
public byte setSleepTime(byte seconds)
                  throws java.io.IOException
```
    leJOS-specific command to the the sleep time for the menu
    
    Parameters:
    
    seconds - the number of seconds before shutdown
    
    Returns:
    
    the status (0 = success)
    
    Throws:
    
    java.io.IOException
  - isOpen
```
public boolean isOpen()
```
    Test is connection is open
    
    Returns:
    
    true iff the connection is open

Class NXTCommand

Field Summary

Fields inherited from interface lejos.remote.nxt.NXTProtocol

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

MAX_FILENAMELENGTH

Constructor Detail

NXTCommand

Method Detail

setVerify

startProgram

stopProgram

getCurrentProgramName

openRead

openWrite

closeFile

delete

findFirst

findNext

getBatteryLevel

close

disconnect

boot

writeFile

uploadFile

readFile

defrag

getFriendlyName

setFriendlyName

getLocalAddress

getInputValues

getOutputState

getTachoCount

setInputMode

LSGetStatus

LSRead

LSWrite

messageRead

messageWrite

playTone

playSoundFile

stopSoundPlayback

resetMotorPosition

setOutputState

getDeviceInfo

getFirmwareVersion

deleteUserFlash

setDefaultProgram

setVolume

setKeyClickVolume

setAutoRun

getVolume

getKeyClickVolume

getAutoRun

getNXJFirmwareVersion

getNXJMenuVersion

getNXJFirmwareInfo

getSleepTime

getDefaultProgram

setSleepTime

isOpen