com.buglabs.bug.jni.common
Class CharDevice

java.lang.Object
  com.buglabs.bug.jni.common.CharDevice

Direct Known Subclasses:

Accelerometer, Camera, GPS, GPSControl, InputDevice, LCDControl, PB, VonHippel

public class CharDevice
extends java.lang.Object

Access files from Java and allow ioctls on device nodes. This class is meant to be used with Linux device nodes.

Field Summary

protected int

fd

Constructor Summary

CharDevice()

Method Summary

int	close()
int	getFileDescriptor()
java.lang.String	getline()
int	ioctl(int request)
long	lseek(long offset, int whence)
int	open(java.lang.String file, int mode) Open a file.
int	read()
int	read(byte[] b)
long	write(byte[] buf, long count)

Methods inherited from class java.lang.Object

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

Field Detail

fd

protected int fd

Constructor Detail

CharDevice

public CharDevice()

Method Detail

getFileDescriptor

public int getFileDescriptor()

open

public int open(java.lang.String file,
                int mode)

Open a file.

Parameters:

file -

mode - Refer to FCNTL_H class for constants to be passed in.

Returns:

negative value on failure.

getline

public java.lang.String getline()

Returns:

a full line from the file.

read

public int read()

Returns:

a byte as int from the file.

read

public int read(byte[] b)

Parameters:

b -

Returns:

number of bytes read.

lseek

public long lseek(long offset,
                  int whence)

Parameters:

offset -

whence -

Returns:

write

public long write(byte[] buf,
                  long count)

ioctl

public int ioctl(int request)

Parameters:

request -

Returns:

close

public int close()

Returns: