Modern Device LCD117/Serial LCD Driver Commands

A popular display chip seems to be LCD117 and is a 9600 baud chip that is recommended
for PICAXE which are capable of 9600 and/or 2400 bps serial transmission.

Some of the following commands are CASE Sensitive and may require a pause.

 

 

Command / Comments

Suggested Pause

Example

 

Send Text

 

SerTxD ("Hello World!");

?a

Home Cursor

 

SerTxD ("?a");

?b

Destructive Backspace

 

SerTxD ("?b"); // backspace

?c#

Set Cursor Style:  0= none 2= blinking 3=underline

 

SerTxD ("?c0"); // turn cursor off

?f

Clear Screen

 

SerTxD ("?f");

?g

Beep (requires speaker on pin 6)

 

SerTxD ("?g");

?h

Backup Cursor (Non-destructive backspace)

 

SerTxD ("?h");

?i

Forward cursor

 

SerTxD ("?i");

?j

Up cursor

 

SerTxD ("?j");

?k

Down cursor

 

SerTxD ("?k");

?l

Clear cursor line

 

SerTxD ("?l");

?m

Carriage Return

 

SerTxD ("?m");

?n

CRLF, carriage return & line feed,
cursor at start of next line, line cleared

 

SerTxD ("?n");

?s#

Set tabs at # spaces

100 ms

SerTxD ("?s7");
// set tab to 7 spaces

?t

Tab, advance one tab position

 

SerTxD ("?t");

?x##

Position cursor on x column, (two characters are required), first column is column 0

 

SerTxD ("?x09");
// cursor to column 10

?y#

Position cursor at y row, first row is row 0,
one digit only (no leading zero)

 

SerTxD ("?y3");
// cursor to row 4

??

Display a "?"

 

SerTxD ("??");

?!

Send direct command to LCD

 

SerTxD ("?!01");

?B

Backlight Intensity – sets PWM value, two hex digits req. (00 to FF)

100 ms

SerTxD ("?BFF");
// backlight on full brightness

?D#

Define Character "?D#1A001A001A001A00" D# = character
# 0-7 then 8 two character hex digits representing
(5 bit values top to bottom)

100 ms

SerTxD ("?D31F001F001F001F00");
// custom character 3
// every other line black

?#

Print a custom character
numerals 0-7 are valid

5 ms

SerTxD ("?3);
// print custom character 3

?H

High output on auxiliary digital pins: valid numbers are 4,5,6

 

SerTxD ("?H4");
// aux pin 4 HIGH

?L

Low output on auxiliary digital pins: valid numbers are 4,5,6

 

SerTxD ("?L4");

// aux pin 4 LOW

?G

Configure for LCD geometry. Supported formats:
2X16, 2X20, 2X24, 2X40, 4X16 and 4X20.

 

SerTxD ("?G216");
// configure driver for 2 x 16 LCD

 

Ganging up commands is OK, except for commands requiring a following  pause

 

SerTxD ("?x01?y1?fHello World");
// cursor to beginning of line 1
// clear screen, print "Hello World"

 

Enhanced Commands

   

?>#

Enter BIG Number Mode (numbers only!) "?>3" X # = 3 or 4 ,

# represents number of characters displayed. (20x4 LCD's only)

100 ms

SerTxD ("?>4");
// enter big number mode, 4 character option.

?<

Exit BIG number mode "?<"

 

SerTxD ("?<");

?C#

Define custom boot screen line # = 0 - 3

100 ms

SerTxD ("?C0abcdefghijklmnopqrst")

?S#

"?S0" - display no screen on boot.
"?S1"  - display the configuration setting on boot
"?S2" - display the user custom text screen on boot.

 

SerTxD ("?S2); // custom boot screen

?* display boot screen at any time   SerTxD ("?*); // show boot screen
    NOTE: In some cases you may use the following instead: SEROUT pin, baudmode, ({#}data,{#}data...)
 
 
 

Copyright © 2008-2015  Ted J. Mieske
All Rights Reserved.