Package com.ibasco.ucgdisplay.drivers.clcd.adapters

Class Pcf8574LcdAdapter

java.lang.Object

com.ibasco.ucgdisplay.drivers.clcd.BaseLcdGpioAdapter

com.ibasco.ucgdisplay.drivers.clcd.adapters.Pcf8574LcdAdapter

All Implemented Interfaces:

LcdGpioAdapter

public class Pcf8574LcdAdapter
extends BaseLcdGpioAdapter

PCF8574 Adapter

Author:

Rafael Ibasco

Constructor Summary

Constructors

Constructor	Description
Pcf8574LcdAdapter(com.pi4j.gpio.extension.pcf.PCF8574GpioProvider provider, LcdPinMapConfig pinMapConfig)

Method Summary

Modifier and Type	Method	Description
void	initialize()	Perform any necessary initialization.
void	setEnableState(com.pi4j.io.gpio.PinState state)	Sets the LCD's Enable Pin state
void	setReadWriteState(LcdReadWriteState state)	Sets the LCD's Read/Write Pin state.
void	setRegSelectState(LcdRegisterSelectState state)	Sets the LCD's Register Select Pin state
protected void	validate(LcdPinMapConfig pinMapConfig)	Verify that we have the required lcd pins mapped
void	write4Bits(byte value)	Sends a 4-bit value to the interface.
void	write8Bits(byte value)	Sends an 8-bit value to the interface.

Methods inherited from class com.ibasco.ucgdisplay.drivers.clcd.BaseLcdGpioAdapter

getMappedPin, isMapped

Methods inherited from class java.lang.Object

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

Constructor Details

Pcf8574LcdAdapter

public Pcf8574LcdAdapter(com.pi4j.gpio.extension.pcf.PCF8574GpioProvider provider,
 LcdPinMapConfig pinMapConfig)

Method Details

validate

protected void validate(LcdPinMapConfig pinMapConfig)
                 throws InvalidPinMappingException

Description copied from class: BaseLcdGpioAdapter

Verify that we have the required lcd pins mapped

Specified by:

validate in class BaseLcdGpioAdapter

Throws:

InvalidPinMappingException

initialize

public void initialize()

Description copied from interface: LcdGpioAdapter

Perform any necessary initialization. (e.g. Setting pinmodes of digital output pins)

write4Bits

public void write4Bits(byte value)

Description copied from interface: LcdGpioAdapter

Sends a 4-bit value to the interface.

Parameters:

value - The 4-bit value to be transmitted over the LCD Interface

write8Bits

public void write8Bits(byte value)

Description copied from interface: LcdGpioAdapter

Sends an 8-bit value to the interface.

Parameters:

value - The 8-bit value to be transmitted over the LCD Interface

setRegSelectState

public void setRegSelectState(LcdRegisterSelectState state)

Description copied from interface: LcdGpioAdapter

Sets the LCD's Register Select Pin state

Parameters:

state - The state of the Register Select Pin. Set to either LcdRegisterSelectState.COMMAND or LcdRegisterSelectState.DATA

setReadWriteState

public void setReadWriteState(LcdReadWriteState state)

Description copied from interface: LcdGpioAdapter

Sets the LCD's Read/Write Pin state. Setting the state to WRITE will set the LCD RW pin to LOW while READ will set the LCD RW pin to HIGH.

Parameters:

state - The state to set (READ/WRITE) for the LCD RW Pin

setEnableState

public void setEnableState(com.pi4j.io.gpio.PinState state)

Description copied from interface: LcdGpioAdapter

Sets the LCD's Enable Pin state

Parameters:

state - The PinState to set for the LCD Enable pin.