Package com.diozero.devices

Class HD44780Lcd.PCF8574LcdConnection

java.lang.Object

com.diozero.devices.HD44780Lcd.GpioExpansionLcdConnection

com.diozero.devices.HD44780Lcd.PCF8574LcdConnection

All Implemented Interfaces:

HD44780Lcd.LcdConnection, AutoCloseable

Enclosing class:

HD44780Lcd

public static class HD44780Lcd.PCF8574LcdConnection
extends HD44780Lcd.GpioExpansionLcdConnection

Connected via the PCF8574 I2C GPIO expansion backpack Default PCF8574 GPIO to HD44780 pin map:

 PH_PIN_RS = 0
 PH_PIN_RW = 1
 PH_PIN_ENABLE = 2
 PH_PIN_LED_EN = 3
 PH_PIN_D4 = 4
 PH_PIN_D5 = 5
 PH_PIN_D6 = 6
 PH_PIN_D7 = 7
 

Field Summary

Fields

Modifier and Type	Field	Description
static int	DEFAULT_DEVICE_ADDRESS

Constructor Summary

Constructors

Constructor	Description
PCF8574LcdConnection(int controller)
PCF8574LcdConnection(int controller, int deviceAddress)

Method Summary

Methods inherited from class com.diozero.devices.HD44780Lcd.GpioExpansionLcdConnection

close, getBacklightBit, getDataReadWriteBit, getEnableBit, getRegisterSelectBit, isDataInHighNibble, write

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_DEVICE_ADDRESS

public static final int DEFAULT_DEVICE_ADDRESS

See Also:

Constant Field Values

Constructor Detail

PCF8574LcdConnection

public PCF8574LcdConnection(int controller)

PCF8574LcdConnection

public PCF8574LcdConnection(int controller,
                            int deviceAddress)