jcontrol.storage
Class FlashStream

java.lang.Object
  jcontrol.storage.FlashStream

All Implemented Interfaces:

jcontrol.io.BasicInputStream, jcontrol.io.BasicOutputStream

public class FlashStream

extends java.lang.Object

implements jcontrol.io.BasicInputStream, jcontrol.io.BasicOutputStream

This class FlashStream represents a memory cached data stream for reading and writing continuous data to the flash memory.

If the flash memory is full or some other error occurs, an IOException is thrown.

Author:

Wolfgang Klingauf

See Also:

Flash, FlashTlv

Available on JControl Devices:

lib

Field Summary

protected byte[]	cache sector cache for faster reads
protected byte	m_bank currently used flash bank (always starts at bank 0)
protected int	m_pos position in current sector (for the stream)
protected int	m_sector current sector
protected int	sectorcount flash sectorsize and -count
protected int	sectorsize flash sectorsize and -count

Constructor Summary

FlashStream()
Create a new flash stream.

Method Summary

void	clearCache() Frees the flash memory.
void	close()
int	getSectorsize() Returns the sectorsize.
char	read() Read a single character from the flash stream.
int	read(byte[] buffer, int startindex, int length) Read data from the flash stream.
int	write(byte[] buffer, int startindex, int length) Write data to the flash stream.
void	write(char data) Write a single character to the flash stream.

Methods inherited from class java.lang.Object

clone, equals, notifyAll, wait

Field Detail

cache

protected byte[] cache

sector cache for faster reads

m_bank

protected byte m_bank

currently used flash bank (always starts at bank 0)

m_pos

protected int m_pos

position in current sector (for the stream)

m_sector

protected int m_sector

current sector

sectorcount

protected int sectorcount

flash sectorsize and -count

sectorsize

protected int sectorsize

flash sectorsize and -count

Constructor Detail

FlashStream

public FlashStream()
            throws java.io.IOException

Create a new flash stream.

Throws:

java.io.IOException

Method Detail

clearCache

public void clearCache()

Frees the flash memory.

close

public void close()

Specified by:

close in interface jcontrol.io.BasicInputStream

See Also:

BasicOutputStream.close()

getSectorsize

public int getSectorsize()

Returns the sectorsize.

Returns:

int

read

public char read()
          throws java.io.IOException

Read a single character from the flash stream.

Specified by:

read in interface jcontrol.io.BasicInputStream

Throws:

java.io.IOException

See Also:

BasicInputStream.read()

read

public int read(byte[] buffer,
                int startindex,
                int length)
         throws java.io.IOException

Read data from the flash stream.

Specified by:

read in interface jcontrol.io.BasicInputStream

Throws:

java.io.IOException

See Also:

BasicInputStream.read(byte[], int, int)

write

public int write(byte[] buffer,
                 int startindex,
                 int length)
          throws java.io.IOException

Write data to the flash stream.

Specified by:

write in interface jcontrol.io.BasicOutputStream

Throws:

java.io.IOException

See Also:

BasicOutputStream.write(byte[], int, int)

write

public void write(char data)
           throws java.io.IOException

Write a single character to the flash stream.

Specified by:

write in interface jcontrol.io.BasicOutputStream

Throws:

java.io.IOException

See Also:

BasicOutputStream.write(char)