com.pi4j.component.lcd.impl

Class I2CLcdDisplay

java.lang.Object

com.pi4j.component.ComponentBase

com.pi4j.component.lcd.LCDBase

com.pi4j.component.lcd.impl.I2CLcdDisplay

All Implemented Interfaces:

Component, LCD

public class I2CLcdDisplay
extends LCDBase
implements LCD

Class description

Version:

1.0, 08/29/13

Author:

Andrew Chandler

Field Summary

Fields

Modifier and Type	Field and Description
protected int	columns
protected int	rows

Constructor Summary

Constructors

Constructor and Description
I2CLcdDisplay(int rows, int columns, int i2cBus, int i2cAddress, int backlightBit, int rsBit, int rwBit, int eBit, int d7, int d6, int d5, int d4) Constructs ...

Method Summary

Modifier and Type	Method and Description
void	clear()
void	diagnostics()
static BitSet	fromByte(byte b)
int	getColumnCount()
int	getRowCount()
boolean	isBacklight()
void	lcd_byte(int val, boolean type)
void	setBacklight(boolean backlight)
void	setBacklight(boolean backlight, boolean immediate)
void	setCursorHome()
void	setCursorPosition(int row, int column)
void	write(byte data)
void	write(String data)

Methods inherited from class com.pi4j.component.lcd.LCDBase

clear, clear, setCursorPosition, validateColumnIndex, validateCoordinates, validateRowIndex, write, write, write, write, write, write, write, write, write, write, write, write, write, write, write, write, write, write, writeln, writeln, writeln, writeln

Methods inherited from class com.pi4j.component.ComponentBase

clearProperties, getName, getProperties, getProperty, getProperty, getTag, hasProperty, removeProperty, setName, setProperty, setTag

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.pi4j.component.lcd.LCD

clear, clear, setCursorPosition, write, write, write, write, write, write, write, write, write, write, write, write, write, write, write, write, write, write, writeln, writeln, writeln, writeln

Methods inherited from interface com.pi4j.component.Component

clearProperties, getName, getProperties, getProperty, getProperty, getTag, hasProperty, removeProperty, setName, setProperty, setTag

Field Detail

rows

protected int rows

columns

protected int columns

Constructor Detail

I2CLcdDisplay

public I2CLcdDisplay(int rows,
                     int columns,
                     int i2cBus,
                     int i2cAddress,
                     int backlightBit,
                     int rsBit,
                     int rwBit,
                     int eBit,
                     int d7,
                     int d6,
                     int d5,
                     int d4)
              throws Exception

Constructs ...

Parameters:

rows -

columns -

i2cBus -

i2cAddress -

backlightBit -

rsBit -

rwBit -

eBit -

d7 -

d6 -

d5 -

d4 -

Throws:

Exception

Method Detail

clear

public void clear()

Specified by:

clear in interface LCD

Overrides:

clear in class LCDBase

write

public void write(byte data)

Specified by:

write in interface LCD

Specified by:

write in class LCDBase

Parameters:

data -

write

public void write(String data)

Specified by:

write in interface LCD

Overrides:

write in class LCDBase

Parameters:

data -

lcd_byte

public void lcd_byte(int val,
                     boolean type)
              throws Exception

Parameters:

val -

type - true = display data, false = LCD cmd

Throws:

Exception

diagnostics

public void diagnostics()

fromByte

public static BitSet fromByte(byte b)

getRowCount

public int getRowCount()

Specified by:

getRowCount in interface LCD

Specified by:

getRowCount in class LCDBase

Returns:

getColumnCount

public int getColumnCount()

Specified by:

getColumnCount in interface LCD

Specified by:

getColumnCount in class LCDBase

Returns:

setCursorHome

public void setCursorHome()

Specified by:

setCursorHome in interface LCD

Overrides:

setCursorHome in class LCDBase

setCursorPosition

public void setCursorPosition(int row,
                              int column)

Specified by:

setCursorPosition in interface LCD

Specified by:

setCursorPosition in class LCDBase

Parameters:

row -

column -

setBacklight

public void setBacklight(boolean backlight)

Parameters:

backlight - the backlight to set

setBacklight

public void setBacklight(boolean backlight,
                         boolean immediate)
                  throws IOException

Parameters:

backlight - the backlight to set

immediate - optionally update the device immediately

Throws:

IOException

isBacklight

public boolean isBacklight()

Returns:

the backlight