Introduction
This is project about simple library for communication Windows IoT with LCD character display over I2C bus. Just download the library from github and start creating your own projects.
Character LCD display over I2C
Connect HD44780 LCD character display to Windows 10 IoT devices via I2C and PCF8574
Basic usage (tl;dr)
Initialization
I2C bus is initialized by library constructor. You have to define there also PCF8574 pins.
displayI2C lcd = new displayI2C(DEVICE_I2C_ADDRESS, I2C_CONTROLLER_NAME, RS, RW, EN, D4, D5, D6, D7, BL);
Default DEVICE_I2C_ADDRESS is 0x27 (you can change it by A0-2 pins on PCF8574 – for more info please read datasheet)
I2C_CONTROLLER_NAME for Raspberry Pi 2 is "I2C1" (For Arduino it should be "I2C5", but I did't test it.)
Other arguments are: RS = 0, RW = 1, EN = 2, D4 = 4, D5 = 5, D6 = 6, D7 = 7, BL = 3 (by default)
But the number of pins depends on your PCF8574.
Initialization of HD44780 display do by init method. More info
lcd.init();
Print string
Print string just by prints method e.g.
lcd.prints("Good morning");————————————————————————————————————————-
Methods
init
Initialize HD44780 display
Arguments:
- bool turnOnDisplay (default: true)
- bool turnOnCursor (default: false)
- bool blinkCursor (default: false)
- bool cursorDirection (default: true)
- bool textShift (default: false)
turnOnBacklight
Turn the Back light ON
No arguments
turnOffBacklight
Turn the Back light OFF
No arguments
prints
Print string to display
Arguments:
- string text
printc
Print char to display
Arguments:
- char letter
gotoSecondLine
Move cursor to start of the second line
No arguments
gotoxy
Move cursor to X and Y coordinates
Arguments:
- byte x
- byte y
clrscr
Clear screen and move cursor to start
No arguments
createSymbol
Create custom symbol
Arguments:
- byte[] data
- byte address
printSymbol
Print custom symbol
Arguments:
- byte address
For more detail: Character LCD over I2C
