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Anobium edited this page Oct 18, 2020 · 1 revision
SDD1289 Controllers

This section covers GLCD devices that use the SDD1289 graphics controller. The SDD1289 is a 240 x 320 single chip controller driver IC for 262k color (RGB) amorphous TFT LCD.

The Great Cow BASIC constants shown below control the configuration of the SDD1289 controller.    Great Cow BASIC supports SPI hardware and software connectivity - this is shown in the tables below.

Great Cow BASIC supports 65K-color mode operations.

To use the SDD1289 driver simply include the following in your user code. This will initialise the driver.

    #include <glcd.h>
    #DEFINE GLCD_TYPE GLCD_TYPE_SDD1289
    'Pin mappings for SDD1289
    #define GLCD_DC     porta.0           'example port setting
    #define GLCD_CS     porta.1           'example port setting
    #define GLCD_RESET  porta.2           'example port setting
    #define GLCD_DI     porta.3           'example port setting
    #define GLCD_DO     porta.4           'example port setting
    #define GLCD_SCK    porta.5           'example port setting

The Great Cow BASIC constants for control display characteristics are shown in the table below.

Constants Controls Default
GLCD_TYPE GLCD_TYPE_SDD1289  
GLCD_DC Specifies the output pin that is connected to Data/Command IO pin on the GLCD. Required
GLCD_CS Specifies the output pin that is connected to Chip Select (CS) on the GLCD. Required
GLCD_Reset Specifies the output pin that is connected to Reset pin on the GLCD. Required
GLCD_DI Specifies the output pin that is connected to Data In (GLCD out) pin on the GLCD. Required
GLCD_DO Specifies the output pin that is connected to Data Out (GLCD in) pin on the GLCD. Required
GLCD_SCK Specifies the output pin that is connected to Clock (CLK) pin on the GLCD. Required

The Great Cow BASIC constants for control display characteristics are shown in the table below.

Constant Purpose Default
GLCD_WIDTH The width parameter of the GLCD Set automatically
GLCD_HEIGHT The height parameter of the GLCD Set automatically
GLCDFontWidth Specifies the font width of the Great Cow BASIC font set. 6

The Great Cow BASIC commands supported for this GLCD are shown in the table below.   Always review the appropiate library for the latest full set of supported commands.

Command Purpose Example

GLCDCLS

Clear screen of GLCD

GLCDCLS

GLCDPrint

Print string of characters on GLCD using GCB font set

GLCDPrint( Xposition, Yposition, Stringvariable )

GLCDDrawChar

Print character on GLCD using GCB font set

GLCDDrawChar( Xposition, Yposition, CharCode )

GLCDDrawString

Print characters on GLCD using GCB font set

GLCDDrawString( Xposition, Yposition, Stringvariable )

Box

Draw a box on the GLCD to a specific size

Box ( Xposition1, Yposition1, Xposition2, Yposition2, [Optional In LineColour as 0 or 1]

FilledBox

Draw a box on the GLCD to a specific size that is filled with the foreground colour.

FilledBox (Xposition1, Yposition1, Xposition2, Yposition2, [Optional In LineColour 0 or 1] )

Line

Draw a line on the GLCD to a specific length that is filled with the specific attribute.

Line ( Xposition1, Yposition1, Xposition2, Yposition2, [Optional In LineColour 0 or 1] )

PSet

Set a pixel on the GLCD at a specific position that is set with the specific attribute.

PSet(Xposition, Yposition, Pixel Colour 0 or 1)

GLCDWriteByte

Set a byte value to the controller, see the datasheet for usage.

GLCDWriteByte ( LCDByte)

GLCDReadByte

Read a byte value from the controller, see the datasheet for usage.

bytevariable = GLCDReadByte

SDD1289_[color]

Specify color as a parameter for many GLCD commands

Color constants for this device are shown in the list below.

Any color can be defined using a valid hexidecimal word value between 0x0000 to 0xFFFF.

 
      SSD1289_BLACK   'hexidecimal value 0x0000
      SSD1289_RED     'hexidecimal value 0xF800
      SSD1289_GREEN   'hexidecimal value 0x07E0
      SSD1289_BLUE    'hexidecimal value 0x001F
      SSD1289_WHITE   'hexidecimal value 0xFFFF
      SSD1289_PURPLE  'hexidecimal value 0xF11F
      SSD1289_YELLOW  'hexidecimal value 0xFFE0
      SSD1289_CYAN    'hexidecimal value 0x07FF
      SSD1289_D_GRAY  'hexidecimal value 0x528A
      SSD1289_L_GRAY  'hexidecimal value 0x7997
      SSD1289_SILVER  'hexidecimal value 0xC618
      SSD1289_MAROON  'hexidecimal value 0x8000
      SSD1289_OLIVE   'hexidecimal value 0x8400
      SSD1289_LIME    'hexidecimal value 0x07E0
      SSD1289_AQUA    'hexidecimal value 0x07FF
      SSD1289_TEAL    'hexidecimal value 0x0410
      SSD1289_NAVY    'hexidecimal value 0x0010
      SSD1289_FUCHSIA 'hexidecimal value 0xF81F

For a SDD1289 datasheet, please refer here.

This example shows how to drive a SDD1289 based Graphic LCD module with the built in commands of Great Cow BASIC.

Example:

    ;Chip Settings
    #chip 16F1937,32
    #config MCLRE_ON

    #include <glcd.h>

    'Defines for SDD1289
    #define GLCD_TYPE GLCD_TYPE_SDD1289
    'Pin mappings for SDD1289
    #define GLCD_DC porta.0
    #define GLCD_CS porta.1
    #define GLCD_RESET porta.2
    #define GLCD_DI porta.3
    #define GLCD_DO porta.4
    #define GLCD_SCK porta.5

    GLCDPrint(0, 0, "Test of the SDD1289 Device")
    end

For more help, see GLCDCLS, GLCDDrawChar, GLCDPrint, GLCDReadByte, GLCDWriteByte OR Pset

Supported in <GLCD.H>

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