CONFIG GRAPHLCD

Action

Configures the Graphical LCD display.

 

 

Syntax

Config GRAPHLCD = type , DATAPORT = port, CONTROLPORT=port , CE = pin , CD = pin , WR = pin, RD=pin, RESET= pin, FS=pin, MODE = mode

 

 

Remarks

Type	This must be 240X64, 128X128, 128X64 , 160X48 , 240X128, 192X64 , SED180X32 or 192X64SED.   For SED displays use 128X64sed or 120X64SED or SED180X32 For 132x132 color displays, use COLOR For EADOG128x64 use 128X64EADOGM For SSD1325 96x64 use   96X64SSD1325. See SSD1325lib. For custom libs : CUSTOM. The following options are optional for custom LCD: - cols= num of cols in pixels - rows= num of rows in pixels - kind= any number to specify the lcd - lcdname="somename"  , an optional name to identify the LCD
Dataport	The name of the port that is used to put the data on the LCD data pins db0-db7.   PORTA for example.
Controlport	This is the name of the port that is used to control the LCD control pins. PORTC for example
Ce	The pin number that is used to enable the chip on the LCD.
Cd	The pin number that is used to control the CD pin of the display.
WR	The pin number that is used to control the /WR pin of the display.
RD	The pin number that is used to control the /RD pin of the display.
FS	The pin number that is used to control the FS pin of the display.   Not needed for SED based displays.
RESET	The pin number that is used to control the RESET pin of the display.
MODE	The number of columns for use as text display. Use 8 for X-pixels / 8 = 30 columns for a 240 pixel screen. When you specify 6, 240 / 6 = 40 columns can be used.
	EADOG128M pins for SPI mode. This display only can write data. As a result, a number of grapical commands are not supported.
CS1	Chip select for EADOG128x64
A0	A0 line for EADOG128x64. This is the line that controls data/command
SI	This is the serial input pin for the EADOG128x64.
SCLK	This is the clock pin for the EADOG128x64.
	ST7565R parallel data mode A 128x64 graphical display which supports all graphic commands
dataport	The data port  connected to the display. For example portJ
CS1	the chip enabled line
A0	the chip data/command mode pin
RST	the reset pin of the chip
WR	The /WR line of the chip
RD	The /RD line of the chip
C86	This pin selects the transfer mode.
PM	Some displays have this PM pin which sets the parallel mode
example	Config Graphlcd = 128 * 64eadogm ,dataport=portj,  Cs1 = Porth.0 , A0 = Porth.2 , rst= Porth.1 , wr = Porth.3 , Rd = Porth.4,c86=porth.6

 

The first chip supported was T6963C. There are also driver for other LCD's such as SED and KS0108. The most popular LCD's will be supported with a custom driver.

 

The following connections were used for the T6963C:

 

PORTA.0 to PORTA.7 to DB0-DB7 of the LCD

PORTC.5 to FS, font select of LCD

PORTC.2 to CE, chip enable of LCD

PORTC.3 to CD, code/data select of LCD

PORTC.0 to WR of LCD, write

PORTC.1 to RD of LCD, read

PORTC.4 to RESET of LCD, reset LCD

 

 

 

The LCD used from www.conrad.de needs a negative voltage for the contrast.

 

Two 9V batteries were used with a pot meter.

Some displays have a Vout that can be used for the contrast(Vo)

 

The T6963C displays have both a graphical area and a text area. They can be used together. The routines use the XOR mode to display both text and graphics layered over each other.

 

 

The statements that can be used with the graphical LCD are :

 

CLS, will clear the graphic display and the text display

CLS GRAPH will clear only the graphic part of the display

CLS TEXT will only clear the text part of the display

 

LOCATE row,column : Will place the cursor at the specified row and column

The row may vary from 1 to 16 and the column from 1 to 40. This depends on the size and mode of the display.

 

CURSOR ON/OFF BLINK/NOBLINK can be used the same way as for text displays.

 

LCD : can be handled the same way as for text displays.

 

SHOWPIC X, Y , Label  : Show image where X and Y are the column and row and Label is the label where the picture info is placed.

 

PSET X, Y , color :  Will set or reset a pixel. X can range from 0-239 and Y from 9-63. When color is 0 the pixel will turned off. When it is 1 the pixel will be set on.

 

$BGF "file.bgf"  : inserts a BGF file at the current location

 

LINE(x0,y0) – (x1,y1) , color : Will draw a line from the coordinate x0,y0 to x1,y1.

Color must be 0 to clear the line and 255 for a black line.

 

BOX(x0,y0)-(x1,y1), color  : Will draw a box from x0,y0 to x1,y1. Color must be 0 to clear the box and 255 for a black line.

 

BOXFILL(x0,y0)-(x1,y1), color  : Will draw a filled box from x0,y0 to x1,y1. Color must be 0 or 255.

 

The Graphic routines are located in the glib.lib or glib.lbx files.

You can hard wire the FS and RESET and change the code from the glib.lib file so these pins can be used for other tasks.

 

COLOR LCD

Color displays were always relatively expensive. The mobile phone market changed that. And Display3000.com , sorted out how to connect these small nice colorful displays.

You can buy brand new Color displays from Display3000. MCS Electronics offers the same displays.

There are two different chip sets used. One chipset is from EPSON and the other from Philips. For this reason there are two different libraries. When you select the wrong one it will not work, but you will not damage anything.

LCD-EPSON.LBX need to be used with the EPSON chipset.

LCD-PCF8833.LBX need to be used with the Philihps chipset.

 

Config Graphlcd = Color , Controlport = Portc , Cs = 1 , Rs = 0 , Scl = 3 , Sda = 2

Controlport	The port that is used to control the pins. PORTA, PORTB, etc.
CS	The chip select pin of the display screen. Specify the pin number. 1 will mean PORTC.1
RS	The RESET pin of the display
SCL	The clock pin of the display
SDA	The data pin of the display

 

As the color display does not have a built in font, you need to generate the fonts yourself.

You can use the Fonteditor for this task.

 

A number of statements accept a color parameter. See the samples below in bold.

LINE	Line(0 , 0) -(130 , 130) , Blue
LCDAT	Lcdat 100 , 0 , "12345678" , Blue , Yellow
CIRCLE	Circle(30 , 30) , 10 , Blue
PSET	32 , 110 , Black
BOX	Box(10 , 30) -(60 , 100) , Red

 

 

See also

SHOWPIC , PSET , $BGF , LINE , LCD , BOX , BOXFILL

 

 

Example

'-----------------------------------------------------------------------------------------
'name : t6963_240_128.bas
'copyright : (c) 1995-2005, MCS Electronics
'purpose : T6963C graphic display support demo 240 * 128
'micro : Mega8535
'suited for demo : yes
'commercial addon needed : no
'-----------------------------------------------------------------------------------------
 
$regfile = "m8535.dat" ' specify the used micro
$crystal = 8000000 ' used crystal frequency
$baud = 19200 ' use baud rate
$hwstack = 32 ' default use 32 for the hardware stack
$swstack = 10 ' default use 10 for the SW stack
$framesize = 40 ' default use 40 for the frame space
 
'-----------------------------------------------------------------
' (c) 2001-2008 MCS Electronics
' T6963C graphic display support demo 240 * 128
'-----------------------------------------------------------------
 
'The connections of the LCD used in this demo
'LCD pin connected to
' 1 GND GND
'2 GND GND
'3 +5V +5V
'4 -9V -9V potmeter
'5 /WR PORTC.0
'6 /RD PORTC.1
'7 /CE PORTC.2
'8 C/D PORTC.3
'9 NC not conneted
'10 RESET PORTC.4
'11-18 D0-D7 PA
'19 FS PORTC.5
'20 NC not connected
 
'First we define that we use a graphic LCD
' Only 240*64 supported yet
Config Graphlcd = 240 * 128 , Dataport = Porta , Controlport = Portc , Ce = 2 , Cd = 3 , Wr = 0 , Rd = 1 , Reset = 4 , Fs = 5 , Mode = 8
'The dataport is the portname that is connected to the data lines of the LCD
'The controlport is the portname which pins are used to control the lcd
'CE, CD etc. are the pin number of the CONTROLPORT.
' For example CE =2 because it is connected to PORTC.2
'mode 8 gives 240 / 8 = 30 columns , mode=6 gives 240 / 6 = 40 columns
 
'Dim variables (y not used)
Dim X As Byte , Y As Byte
 
 
'Clear the screen will both clear text and graph display
Cls
'Other options are :
' CLS TEXT to clear only the text display
' CLS GRAPH to clear only the graphical part
 
Cursor Off
 
Wait 1
'locate works like the normal LCD locate statement
' LOCATE LINE,COLUMN LINE can be 1-8 and column 0-30
 
 
Locate 1 , 1
 
'Show some text
Lcd "MCS Electronics"
'And some othe text on line 2
Locate 2 , 1 : Lcd "T6963c support"
Locate 3 , 1 : Lcd "1234567890123456789012345678901234567890"
Locate 16 , 1 : Lcd "write this to the lower line"
 
Wait 2
 
Cls Text
 
 
'use the new LINE statement to create a box
'LINE(X0,Y0) - (X1,Y1), on/off
Line(0 , 0) -(239 , 127) , 255 ' diagonal line
Line(0 , 127) -(239 , 0) , 255 ' diagonal line
Line(0 , 0) -(240 , 0) , 255 ' horizontal upper line
Line(0 , 127) -(239 , 127) , 255 'horizontal lower line
Line(0 , 0) -(0 , 127) , 255 ' vertical left line
Line(239 , 0) -(239 , 127) , 255 ' vertical right line
 
 
Wait 2
' draw a line using PSET X,Y, ON/OFF
' PSET on.off param is 0 to clear a pixel and any other value to turn it on
For X = 0 To 140
Pset X , 20 , 255 ' set the pixel
Next
 
For X = 0 To 140
Pset X , 127 , 255 ' set the pixel
Next
 
Wait 2
 
'circle time
'circle(X,Y), radius, color
'X,y is the middle of the circle,color must be 255 to show a pixel and 0 to clear a pixel
For X = 1 To 10
Circle(20 , 20) , X , 255 ' show circle
Wait 1
Circle(20 , 20) , X , 0 'remove circle
Wait 1
Next
 
Wait 2
 
For X = 1 To 10
Circle(20 , 20) , X , 255 ' show circle
Waitms 200
Next
Wait 2
'Now it is time to show a picture
'SHOWPIC X,Y,label
'The label points to a label that holds the image data
Test:
Showpic 0 , 0 , Plaatje
Showpic 0 , 64 , Plaatje ' show 2 since we have a big display
Wait 2
Cls Text ' clear the text
End
 
 
 
'This label holds the mage data
Plaatje:
'$BGF will put the bitmap into the program at this location
$bgf "mcs.bgf"
 
'You could insert other picture data here

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