de.wagner_ibw.iow.i2c
Class PCF8570

java.lang.Object
  |
  +--de.wagner_ibw.iow.i2c.AbstractI2CDevice
        |
        +--de.wagner_ibw.iow.i2c.PCF8570

All Implemented Interfaces:

I2CDevice

public class PCF8570

extends AbstractI2CDevice

This is the implementation of the PCF8570P device, "256 x 8-bit static low-voltage RAM".

Since:

0.9.4

Author:

Thomas Wagner

Field Summary

static int	CLASS Group 1 part of slave address for PCF8570 (PCF8570 device specific constant).
static java.lang.String	NAME PCF8570 device specific constants.
int	RAM_SIZE Capacity of this RAM.

Fields inherited from class de.wagner_ibw.iow.i2c.AbstractI2CDevice

MAX_I2C_LENGTH

Constructor Summary

PCF8570(int deviceAddress)
Constructor

Method Summary

boolean	equals(java.lang.Object o) Indicates whether some other PCF8570 object is "equal to" this one.
void	fillRam(int pattern) Fills the whole ram with the specified pattern.
int	hashCode() Returns a hash code value for this PCF8570 object.
int	read(int address)
int[]	readPage(int address, int length)
void	setIowDevice(AbstractIowDevice iow) Sets the reference to an IO-Warrior device for write report operations.
java.lang.String	toString() Returns Information about this PCF8570 as String.
void	write(int address, int data)
void	writePage(int address, int[] data)

Methods inherited from class de.wagner_ibw.iow.i2c.AbstractI2CDevice

getI2cAddress, getName, readI2C, reportReceived, setMonitor, writeI2C

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Field Detail

NAME

public static final java.lang.String NAME

PCF8570 device specific constants.

See Also:

Constant Field Values

RAM_SIZE

public final int RAM_SIZE

Capacity of this RAM.

See Also:

Constant Field Values

CLASS

public static final int CLASS

Group 1 part of slave address for PCF8570 (PCF8570 device specific constant).

See Also:

Constant Field Values

Constructor Detail

PCF8570

public PCF8570(int deviceAddress)
        throws java.lang.Exception

Constructor

Parameters:

deviceAddress - Group 2 part of slave address (possible values 0...7).

Throws:

java.lang.Exception - If anything goes wrong.

Method Detail

read

public int read(int address)
         throws java.lang.Exception,
                java.lang.IllegalArgumentException

Parameters:

address -

Returns:

read value

Throws:

java.lang.Exception - If any transmission error occurred.

java.lang.IllegalArgumentException

write

public void write(int address,
                  int data)
           throws java.lang.Exception,
                  java.lang.IllegalArgumentException

Parameters:

address -

data -

Throws:

java.lang.Exception - If any transmission error occurred.

java.lang.IllegalArgumentException

writePage

public void writePage(int address,
                      int[] data)
               throws java.lang.Exception,
                      java.lang.IllegalArgumentException

Parameters:

address -

data -

Throws:

java.lang.Exception - If any transmission error occurred.

java.lang.IllegalArgumentException

readPage

public int[] readPage(int address,
                      int length)
               throws java.lang.Exception,
                      java.lang.IllegalArgumentException

java.lang.Exception

java.lang.IllegalArgumentException

fillRam

public void fillRam(int pattern)
             throws java.lang.Exception

Fills the whole ram with the specified pattern.

Parameters:

pattern - Pattern that fills the ram.

Throws:

java.lang.Exception - If any transmission error occurred.

setIowDevice

public void setIowDevice(AbstractIowDevice iow)

Description copied from interface: I2CDevice

Sets the reference to an IO-Warrior device for write report operations.

Specified by:

setIowDevice in interface I2CDevice

Specified by:

setIowDevice in class AbstractI2CDevice

Parameters:

iow - Instance of an IO-Warrior device.

toString

public java.lang.String toString()

Returns Information about this PCF8570 as String.

Overrides:

toString in class AbstractI2CDevice

Returns:

String representation of information about this PCF8570. (slave address, temperatures, ...).

equals

public boolean equals(java.lang.Object o)

Indicates whether some other PCF8570 object is "equal to" this one. Criterias are the i2c device class and i2c device address (in I2CAddress).

Overrides:

equals in class AbstractI2CDevice

Returns:

True if this object is the same as the obj argument; false otherwise.

hashCode

public int hashCode()

Returns a hash code value for this PCF8570 object. It is derived from the i2c device class and i2c device address.

Overrides:

hashCode in class AbstractI2CDevice

Returns:

a hash code value for this object.