27220 Parallax Inc, 27220 Datasheet - Page 92

• Manufacturer Part Number: 27220
• Description: BOOK STAMPWORKS
• Manufacturer: Parallax Inc

Specifications of 27220

• Accessory Type: Booklet
• Product: Microcontroller Accessories
• Lead Free Status / RoHS Status: Not applicable / Not applicable
• For Use With/related Products: StampWorks
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Not applicable / Not applicable

EXPERIMENT #12: CREATING CUSTOM LCD CHARACTERS
This program demonstrates the creation of custom LCD characters, animation with
the custom characters, and initializing the LCD for multi-line mode.
Building the Circuit
Use the same circuit as in Experiment #11.
Program: SW21-EX11-LCD_Demo.BS2
' {$STAMP BS2}
' {$PBASIC 2.5}
' -----[ Program Description ]---------------------------------------------
'
' This program demonstrates custom character creation and animation on a
' character LCD.
'
' The connections for this program conform to the BS2p-family LCDCMD,
' LCDIN, and LCDOUT instructions.
' or BS2sx.
' -----[ I/O Definitions ]-------------------------------------------------
E
RW
RS
LcdBus
' -----[ Constants ]-------------------------------------------------------
LcdCls
LcdHome
LcdCrsrL
LcdCrsrR
LcdDispL
LcdDispR
LcdDDRam
LcdCGRam
LcdLine1
LcdLine2
#DEFINE _LcdReady = ($STAMP >= BS2P)
There is a separate program for the BS2p, BS2pe, and BS2px.
PIN
PIN
CON
VAR
CON
CON
CON
CON
CON
CON
CON
CON
CON
CON
1
2
3
OUTB
$01
$02
$10
$14
$18
$1C
$80
$40
$80
$C0
Use this program for the BS2, BS2e,
' Enable pin
' Read/Write
' Register Select
' 4-bit LCD data bus
' clear the LCD
' move cursor home
' move cursor left
' move cursor right
' shift chars left
' shift chars right
' Display Data RAM control
' Character Generator RAM
' DDRAM address of line 1
' DDRAM address of line 2