TFT Display Library
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TFT Library

Thin film transistor liquid crystal display (TFT-LCD) is a variant of liquid crystal display (LCD) which uses thin-film transistor (TFT) technology to improve image quality (e.g., addressability, contrast).
TFT LCD is one type of active matrix LCD, though all LCD-screens are based on TFT active matrix addressing.
TFT LCDs are used in television sets, computer monitors, mobile phones, handheld video game systems, personal digital assistants, navigation systems, projectors, etc.

The mikroPascal PRO for PIC provides a library for working with the following display controllers :


  Note :

External dependencies of TFT Library

The following variables must be defined in all projects using TFT library: Description : Example :
var TFT_DataPort : byte; external; sfr; TFT Data Port. var TFT_DataPort : byte at PORTC;
var TFT_DataPort_Direction : byte; external; sfr; Direction of the TFT Data Port. var TFT_DataPort_Direction : byte at DDRC;
var TFT_WR : sbit; sfr; external; Write signal. var TFT_WR : sbit at PORTD2_bit;
var TFT_RD : sbit; sfr; external; Read signal. var TFT_RD : sbit at PORTD1_bit;
var TFT_CS : sbit; sfr; external; Chip Select signal. var TFT_CS : sbit at PORTD4_bit;
var TFT_RS : sbit; sfr; external; Command/Register Select signal. var TFT_RS : sbit at PORTD3_bit;
var TFT_RST : sbit; sfr; external; Reset signal. var TFT_RST : sbit at PORTD0_bit;
var TFT_WR_Direction : sbit; sfr; external; Direction of the Write pin. var TFT_WR_Direction : sbit at DDD2_bit;
var TFT_RD_Direction : sbit; sfr; external; Direction of the Read pin. var TFT_RD_Direction : sbit at DDD1_bit;
var TFT_CS_Direction : sbit; sfr; external; Direction of the Chip Select pin. var TFT_CS_Direction : sbit at DDD4_bit;
var TFT_RS_Direction : sbit; sfr; external; Direction of the Register Select pin. var TFT_RS_Direction : sbit at DDD3_bit;
var TFT_RST_Direction : sbit; sfr; external; Direction of the Reset pin. var TFT_RST_Direction : sbit at DDD0_bit;

Library Routines

TFT_Init

Prototype

procedure TFT_Init(display_width, display_height : word) ;
Returns

Nothing.
Description

Initializes HX8347-D display controller display in the 8-bit working mode.

Parameters :

  • width: width of the TFT panel
  • height: height of the TFT panel
Requires

Global variables :

  • TFT_DataPort: Data Port
  • TFT_WR: Write signal pin
  • TFT_RD: Read signal pin
  • TFT_CS: Chip Select signal pin
  • TFT_RS: Register Select signal pin
  • TFT_RST: Reset signal pin

  • TFT_DataPort_Direction: Direction of Data Port
  • TFT_WR_Direction: Direction of Write signal pin
  • TFT_RD_Direction: Direction of Read signal pin
  • TFT_CS_Direction: Direction of Chip Select signal pin
  • TFT_RS_Direction: Direction of Register Select signal pin
  • TFT_RST_Direction: Direction of Reset signal pin
must be defined before using this function.
Example 
// TFT display connections
var TFT_DataPort : byte at PORTC;
var TFT_WR : sbit at PORTD2_bit;
var TFT_RD : sbit at PORTD1_bit;
var TFT_CS : sbit at PORTD4_bit;
var TFT_RS : sbit at PORTD3_bit;
var TFT_RST : sbit at PORTD0_bit;

var TFT_DataPort_Direction : byte at DDRC;
var TFT_WR_Direction : sbit at DDD2_bit;
var TFT_RD_Direction : sbit at DDD1_bit;
var TFT_CS_Direction : sbit at DDD4_bit;
var TFT_RS_Direction : sbit at DDD4_bit;
var TFT_RST_Direction : sbit at DDD0_bit;
// End of TFT display connections

// Initialize 240x320 TFT display
TFT_Init(240, 320);

TFT_Init_HX8347G

Prototype

procedure TFT_Init_HX8347G(display_width, display_height : word) ;
Returns

Nothing.
Description

Initializes HX8347-G display controller display in the 8-bit working mode.

Parameters :

  • width: width of the TFT panel
  • height: height of the TFT panel
Requires

Global variables :

  • TFT_DataPort: Data Port
  • TFT_WR: Write signal pin
  • TFT_RD: Read signal pin
  • TFT_CS: Chip Select signal pin
  • TFT_RS: Register Select signal pin
  • TFT_RST: Reset signal pin

  • TFT_DataPort_Direction: Direction of Data Port
  • TFT_WR_Direction: Direction of Write signal pin
  • TFT_RD_Direction: Direction of Read signal pin
  • TFT_CS_Direction: Direction of Chip Select signal pin
  • TFT_RS_Direction: Direction of Register Select signal pin
  • TFT_RST_Direction: Direction of Reset signal pin
must be defined before using this function.
Example 
// TFT display connections
var TFT_DataPort : byte at PORTC;
var TFT_WR : sbit at PORTD2_bit;
var TFT_RD : sbit at PORTD1_bit;
var TFT_CS : sbit at PORTD4_bit;
var TFT_RS : sbit at PORTD3_bit;
var TFT_RST : sbit at PORTD0_bit;

var TFT_DataPort_Direction : byte at DDRC;
var TFT_WR_Direction : sbit at DDD2_bit;
var TFT_RD_Direction : sbit at DDD1_bit;
var TFT_CS_Direction : sbit at DDD4_bit;
var TFT_RS_Direction : sbit at DDD4_bit;
var TFT_RST_Direction : sbit at DDD0_bit;
// End of TFT display connections

// Initialize 240x320 TFT display
TFT_Init_HX8347G(240, 320);

TFT_Init_SSD1963_8bit

Prototype

procedure TFT_Init_SSD1963_8bit(display_width, display_height : word) ;
Returns

Nothing.
Description

Initializes SSD1963 display controller display in the 8-bit working mode.

Parameters :

  • width: width of the TFT panel
  • height: height of the TFT panel
Requires

Global variables :

  • TFT_DataPort: Data Port
  • TFT_WR: Write signal pin
  • TFT_RD: Read signal pin
  • TFT_CS: Chip Select signal pin
  • TFT_RS: Register Select signal pin
  • TFT_RST: Reset signal pin

  • TFT_DataPort_Direction: Direction of Data Port
  • TFT_WR_Direction: Direction of Write signal pin
  • TFT_RD_Direction: Direction of Read signal pin
  • TFT_CS_Direction: Direction of Chip Select signal pin
  • TFT_RS_Direction: Direction of Register Select signal pin
  • TFT_RST_Direction: Direction of Reset signal pin
must be defined before using this function.
Example 
// TFT display connections
var TFT_DataPort : byte at PORTC;
var TFT_WR : sbit at PORTD2_bit;
var TFT_RD : sbit at PORTD1_bit;
var TFT_CS : sbit at PORTD4_bit;
var TFT_RS : sbit at PORTD3_bit;
var TFT_RST : sbit at PORTD0_bit;

var TFT_DataPort_Direction : byte at DDRC;
var TFT_WR_Direction : sbit at DDD2_bit;
var TFT_RD_Direction : sbit at DDD1_bit;
var TFT_CS_Direction : sbit at DDD4_bit;
var TFT_RS_Direction : sbit at DDD4_bit;
var TFT_RST_Direction : sbit at DDD0_bit;
// End of TFT display connections

// Initialize 240x320 TFT display
TFT_Init_SSD1963_8bit(240, 320);

TFT_Init_R61526

Prototype

procedure TFT_Init_R61526(display_width, display_height : word) ;
Returns

Nothing.
Description

Initializes R61526 display controller display in the 8-bit working mode.

Parameters :

  • width: width of the TFT panel
  • height: height of the TFT panel
Requires

Global variables :

  • TFT_DataPort: Data Port
  • TFT_WR: Write signal pin
  • TFT_RD: Read signal pin
  • TFT_CS: Chip Select signal pin
  • TFT_RS: Register Select signal pin
  • TFT_RST: Reset signal pin

  • TFT_DataPort_Direction: Direction of Data Port
  • TFT_WR_Direction: Direction of Write signal pin
  • TFT_RD_Direction: Direction of Read signal pin
  • TFT_CS_Direction: Direction of Chip Select signal pin
  • TFT_RS_Direction: Direction of Register Select signal pin
  • TFT_RST_Direction: Direction of Reset signal pin
must be defined before using this function.
Example 
// TFT display connections
var TFT_DataPort : byte at PORTC;
var TFT_WR : sbit at PORTD2_bit;
var TFT_RD : sbit at PORTD1_bit;
var TFT_CS : sbit at PORTD4_bit;
var TFT_RS : sbit at PORTD3_bit;
var TFT_RST : sbit at PORTD0_bit;

var TFT_DataPort_Direction : byte at DDRC;
var TFT_WR_Direction : sbit at DDD2_bit;
var TFT_RD_Direction : sbit at DDD1_bit;
var TFT_CS_Direction : sbit at DDD4_bit;
var TFT_RS_Direction : sbit at DDD4_bit;
var TFT_RST_Direction : sbit at DDD0_bit;
// End of TFT display connections

// Initialize 240x320 TFT display
TFT_Init_R61526(240, 320);

TFT_Init_SST7715R

Prototype

procedure TFT_Init_SST7715R(display_width, display_height : word) ;
Returns

Nothing.
Description

Initializes SST7715R display controller display in the 8-bit working mode.

Parameters :

  • width: width of the TFT panel
  • height: height of the TFT panel
Requires

Global variables :

  • TFT_DataPort: Data Port
  • TFT_WR: Write signal pin
  • TFT_RD: Read signal pin
  • TFT_CS: Chip Select signal pin
  • TFT_RS: Register Select signal pin
  • TFT_RST: Reset signal pin

  • TFT_DataPort_Direction: Direction of Data Port
  • TFT_WR_Direction: Direction of Write signal pin
  • TFT_RD_Direction: Direction of Read signal pin
  • TFT_CS_Direction: Direction of Chip Select signal pin
  • TFT_RS_Direction: Direction of Register Select signal pin
  • TFT_RST_Direction: Direction of Reset signal pin
must be defined before using this function.
Example 
// TFT display connections
var TFT_DataPort : byte at PORTC;
var TFT_WR : sbit at PORTD2_bit;
var TFT_RD : sbit at PORTD1_bit;
var TFT_CS : sbit at PORTD4_bit;
var TFT_RS : sbit at PORTD3_bit;
var TFT_RST : sbit at PORTD0_bit;

var TFT_DataPort_Direction : byte at DDRC;
var TFT_WR_Direction : sbit at DDD2_bit;
var TFT_RD_Direction : sbit at DDD1_bit;
var TFT_CS_Direction : sbit at DDD4_bit;
var TFT_RS_Direction : sbit at DDD4_bit;
var TFT_RST_Direction : sbit at DDD0_bit;
// End of TFT display connections

// Initialize 240x320 TFT display
TFT_Init_SST7715R(240, 320);

TFT_Init_ILI9340_8bit

Prototype

procedure TFT_Init_ILI9340_8bit(display_width, display_height : word);
Returns

Nothing.
Description

Initializes ILI9340 display controller display in the 8-bit working mode.

Parameters :

  • width: width of the TFT panel
  • height: height of the TFT panel
Requires

Global variables :

  • TFT_DataPort: Data Port
  • TFT_WR: Write signal pin
  • TFT_RD: Read signal pin
  • TFT_CS: Chip Select signal pin
  • TFT_RS: Register Select signal pin
  • TFT_RST: Reset signal pin

  • TFT_DataPort_Direction: Direction of Data Port
  • TFT_WR_Direction: Direction of Write signal pin
  • TFT_RD_Direction: Direction of Read signal pin
  • TFT_CS_Direction: Direction of Chip Select signal pin
  • TFT_RS_Direction: Direction of Register Select signal pin
  • TFT_RST_Direction: Direction of Reset signal pin
must be defined before using this function.
Example 
// TFT display connections
var TFT_DataPort : byte at PORTC;
var TFT_WR : sbit at PORTD2_bit;
var TFT_RD : sbit at PORTD1_bit;
var TFT_CS : sbit at PORTD4_bit;
var TFT_RS : sbit at PORTD3_bit;
var TFT_RST : sbit at PORTD0_bit;

var TFT_DataPort_Direction : byte at DDRC;
var TFT_WR_Direction : sbit at DDD2_bit;
var TFT_RD_Direction : sbit at DDD1_bit;
var TFT_CS_Direction : sbit at DDD4_bit;
var TFT_RS_Direction : sbit at DDD4_bit;
var TFT_RST_Direction : sbit at DDD0_bit;
// End of TFT display connections

// Initialize 240x320 TFT display
TFT_Init_ILI9340_8bit(240, 320);

TFT_Init_ILI9481_8bit

Prototype

procedure TFT_Init_ILI9481_8bit(display_width, display_height : word);
Returns

Nothing.
Description

Initializes ILI9481 display controller display in the 8-bit working mode.

Parameters :

  • width: width of the TFT panel
  • height: height of the TFT panel
Requires

Global variables :

  • TFT_DataPort: Data Port
  • TFT_WR: Write signal pin
  • TFT_RD: Read signal pin
  • TFT_CS: Chip Select signal pin
  • TFT_RS: Register Select signal pin
  • TFT_RST: Reset signal pin

  • TFT_DataPort_Direction: Direction of Data Port
  • TFT_WR_Direction: Direction of Write signal pin
  • TFT_RD_Direction: Direction of Read signal pin
  • TFT_CS_Direction: Direction of Chip Select signal pin
  • TFT_RS_Direction: Direction of Register Select signal pin
  • TFT_RST_Direction: Direction of Reset signal pin
must be defined before using this function.
Example 
// TFT display connections
var TFT_DataPort : byte at PORTC;
var TFT_WR : sbit at PORTD2_bit;
var TFT_RD : sbit at PORTD1_bit;
var TFT_CS : sbit at PORTD4_bit;
var TFT_RS : sbit at PORTD3_bit;
var TFT_RST : sbit at PORTD0_bit;

var TFT_DataPort_Direction : byte at DDRC;
var TFT_WR_Direction : sbit at DDD2_bit;
var TFT_RD_Direction : sbit at DDD1_bit;
var TFT_CS_Direction : sbit at DDD4_bit;
var TFT_RS_Direction : sbit at DDD4_bit;
var TFT_RST_Direction : sbit at DDD0_bit;
// End of TFT display connections

// Initialize 240x320 TFT display
TFT_Init_ILI9481_8bit(240, 320);

TFT_Set_Index

Prototype

procedure TFT_Set_Index(index : byte);
Returns

Nothing.
Description

Accesses register space of the controller and sets the desired register.

Parameters :

  • index: desired register number.
Requires

TFT module needs to be initialized. Please, see appropriate TFT initialization routine.
Example 
// Access register at the location 0x02
TFT_Set_Index(0x02);

TFT_Write_Command

Prototype

procedure TFT_Write_Command(cmd : byte);
Returns

Nothing.
Description

Accesses data space and writes a command.

Parameters :

  • cmd: command to be written.
Requires

TFT module needs to be initialized. Please, see appropriate TFT initialization routine.
Example 
// Write a command
TFT_Write_Command(0x02);

TFT_Write_Data

Prototype

procedure TFT_Write_Data(_data : word);
Returns

Nothing.
Description

Writes date into display memory.

Parameters :

  • _data:data to be written.
Requires

TFT module needs to be initialized. Please, see appropriate TFT initialization routine.
Example 
// Send data
TFT_Write_Data(0x02);

TFT_Set_Reg

Prototype

procedure TFT_Set_Reg(index, value : byte);
Returns

Nothing.
Description

Accesses register space of the controller and writes a value in the desired register.

Parameters :

  • index: desired register.
  • value: value to be written.
Requires

TFT module needs to be initialized. Please, see appropriate TFT initialization routine.
Example 
// 65K Color Selection
TFT_Set_Reg(0x17, 0x05);

TFT_Set_Ext_Buffer

Prototype

procedure TFT_Set_Ext_Buffer(getExtDataPtr : ^TTFT_Get_Ext_Data_Ptr);
Returns

Nothing.
Description

Function sets pointer to the user function which manipulates the external resource.

Parameters :

  • TTFT_Get_Ext_Data_Ptr - pointer to the user function.

User function prototype should be in the following format: function External(offset : dword; count : dword; var num : dword) : ^byte;

Parameters used in the function have the following meaning :

  • offset - offset from the beginning of the resource from where the data is requested.
  • count - requested number of bytes.
  • num - variable for holding the returned number of bytes (less or equal to the number of acquired bytes).
Requires

TFT module needs to be initialized. Please, see appropriate TFT initialization routine.
Example 
TFT_Set_Ext_Buffer(@ReadExternalBuffer);

TFT_Set_Active

Prototype

procedure TFT_Set_Active(Set_Index_Ptr : ^TTFT_Set_Index_Ptr; Write_Command_Ptr : ^TTFT_Write_Command_Ptr; Write_Data_Ptr : ^TTFT_Write_Data_Ptr);
Returns

Nothing.
Description

This function sets appropriate pointers to a user-defined basic routines in order to enable multiple working modes.

Parameters :

  • Set_Index_Ptr: Set_Index handler.
  • Write_Command_Ptr: _Write_Command handler.
  • Write_Data_Ptr: Write_Data handler.
Requires

None.
Example 
// Example of establishing 16-bit communication between TFT display and PORTD, PORTE of MCU :

procedure Set_Index(index : byte) {
  TFT_RS = 0;
  Lo(LATD) = index;
  TFT_WR = 0;
  TFT_WR = 1;
}

procedure Write_Command(cmd : byte) {
  TFT_RS = 1;
  Lo(LATD) = cmd;
  TFT_WR = 0;
  TFT_WR = 1;
}

procedure Write_Data(_data : word) {
  TFT_RS = 1;
  Lo(LATE) = Hi(_data);
  Lo(LATD) = Lo(_data);
  TFT_WR = 0;
  TFT_WR = 1;
}

procedure main() {
  TRISE = 0;
  TRISD = 0;

  TFT_Set_Active(Set_Index,Write_Command,Write_Data);
  TFT_Init(320, 240);

  .....
}

TFT_Set_Default_Mode

Prototype

procedure TFT_Set_Default_Mode();
Returns

Nothing.
Description

This procedure sets TFT in default working mode.

Parameters :

  • None.
Requires

None.
Example 
TFT_Set_Default_Mode();
TFT_Init(320, 240);

TFT_Set_Font

Prototype

procedure TFT_Set_Font(activeFont : ^const far byte; font_color : word; font_orientation : byte);
Returns

Nothing.
Description

Sets font, its color and font orientation.

Parameters :

  • activeFont: desired font. Currently, only TFT_defaultFont (Tahoma14x16) is supported.
  • font_color: sets font color :

    Value Description
    CL_AQUA Aqua color
    CL_BLACK Black color
    CL_BLUE Blue color
    CL_FUCHSIA Fuchsia color
    CL_GRAY Gray color
    CL_GREEN Green color
    CL_LIME Lime color
    CL_MAROON Maroon color
    CL_NAVY Navy color
    CL_OLIVE Olive color
    CL_PURPLE Purple color
    CL_RED Red color
    CL_SILVER Silver color
    CL_TEAL Teal color
    CL_WHITE White color
    CL_YELLOW Yellow color

  • font_orientation: sets font orientation :

    Value Description
    FO_HORIZONTAL Horizontal orientation
    FO_VERTICAL Vertical orientation

Requires

TFT module needs to be initialized. Please, see appropriate TFT initialization routine.
Example 
TFT_Set_Font(@TFT_defaultFont, CL_BLACK, FO_HORIZONTAL);

TFT_Set_Ext_Font

Prototype

procedure TFT_Set_Ext_Font(activeFont : dword; font_color : word; font_orientation : byte);
Returns

Nothing.
Description

Sets font, its color and font orientation. Font is located in an external resource

Parameters :

  • activeFont: desired font. This parameter represents the address in the exteral resource from where the font data begins.
  • font_color: sets font color :

    Value Description
    CL_AQUA Aqua color
    CL_BLACK Black color
    CL_BLUE Blue color
    CL_FUCHSIA Fuchsia color
    CL_GRAY Gray color
    CL_GREEN Green color
    CL_LIME Lime color
    CL_MAROON Maroon color
    CL_NAVY Navy color
    CL_OLIVE Olive color
    CL_PURPLE Purple color
    CL_RED Red color
    CL_SILVER Silver color
    CL_TEAL Teal color
    CL_WHITE White color
    CL_YELLOW Yellow color

  • font_orientation: sets font orientation :

    Value Description
    FO_HORIZONTAL Horizontal orientation
    FO_VERTICAL Vertical orientation

Requires

TFT module needs to be initialized. Please, see appropriate TFT initialization routine.
Example 
TFT_Set_Ext_Font(173296,CL_BLACK,FO_HORIZONTAL);

TFT_Write_Char

Prototype

procedure TFT_Write_Char(ch, x, y : word);
Returns

Nothing.
Description

Writes a char on the TFT at coordinates (x, y).

  • c: char to be written.
  • x: char position on x-axis.
  • y: char position on y-axis.
Requires

TFT module needs to be initialized. Please, see appropriate TFT initialization routine.
Example 
TFT_Write_Char('A',22,23);

TFT_Write_Text

Prototype

procedure TFT_Write_Text(var text : string; x, y : word);
Returns

Nothing.
Description

Writes text on the TFT at coordinates (x, y).

Parameters :

  • text: text to be written.
  • x: text position on x-axis.
  • y: text position on y-axis.
Requires

TFT module needs to be initialized. Please, see appropriate TFT initialization routine.
Example 
TFT_Write_Text('TFT LIBRARY DEMO, WELCOME !', 0, 0);

TFT_Write_Const_Text

Prototype

procedure TFT_Write_Const_Text(const text : ^far byte; x, y : word);
Returns

Nothing.
Description

Writes text located in the program memory on the TFT at coordinates (x, y).

Parameters :

  • text: text to be written.
  • x: text position on x-axis.
  • y: text position on y-axis.
Requires

TFT module needs to be initialized. Please, see appropriate TFT initialization routine.
Example 
const char ctext[] = "mikroElektronika";
...
TFT_Write_Const_Text(ctext, 0, 0);

TFT_Fill_Screen

Prototype

procedure TFT_Fill_Screen(color : word);
Returns

Nothing.
Description

Fills screen memory block with given color.

Parameters :

  • color: color to be filled :

    Value Description
    CL_AQUA Aqua color
    CL_BLACK Black color
    CL_BLUE Blue color
    CL_FUCHSIA Fuchsia color
    CL_GRAY Gray color
    CL_GREEN Green color
    CL_LIME Lime color
    CL_MAROON Maroon color
    CL_NAVY Navy color
    CL_OLIVE Olive color
    CL_PURPLE Purple color
    CL_RED Red color
    CL_SILVER Silver color
    CL_TEAL Teal color
    CL_WHITE White color
    CL_YELLOW Yellow color

Requires

TFT module needs to be initialized. Please, see appropriate TFT initialization routine.
Example 
TFT_Fill_Screen(CL_BLACK);

TFT_Dot

Prototype

procedure TFT_Dot(x, y : integer; color : word);
Returns

Nothing.
Description

Draws a dot on the TFT at coordinates (x, y).

Parameters :

  • x: dot position on x-axis.
  • y: dot position on y-axis.
  • color: color parameter. Valid values :

    Value Description
    CL_AQUA Aqua color
    CL_BLACK Black color
    CL_BLUE Blue color
    CL_FUCHSIA Fuchsia color
    CL_GRAY Gray color
    CL_GREEN Green color
    CL_LIME Lime color
    CL_MAROON Maroon color
    CL_NAVY Navy color
    CL_OLIVE Olive color
    CL_PURPLE Purple color
    CL_RED Red color
    CL_SILVER Silver color
    CL_TEAL Teal color
    CL_WHITE White color
    CL_YELLOW Yellow color

Requires

TFT module needs to be initialized. Please, see appropriate TFT initialization routine.
Example 
TFT_Dot(50, 50, CL_BLACK);

TFT_Set_Pen

Prototype

procedure TFT_Set_Pen(pen_color : word; pen_width : byte);
Returns

Nothing.
Description

Sets color and thickness parameter for drawing line, circle and rectangle elements.

Parameters :

  • pen_color: Sets color.

    Value Description
    CL_AQUA Aqua color
    CL_BLACK Black color
    CL_BLUE Blue color
    CL_FUCHSIA Fuchsia color
    CL_GRAY Gray color
    CL_GREEN Green color
    CL_LIME Lime color
    CL_MAROON Maroon color
    CL_NAVY Navy color
    CL_OLIVE Olive color
    CL_PURPLE Purple color
    CL_RED Red color
    CL_SILVER Silver color
    CL_TEAL Teal color
    CL_WHITE White color
    CL_YELLOW Yellow color

  • pen_width: sets thickness.
Requires

TFT module needs to be initialized. Please, see appropriate TFT initialization routine.
Example 
TFT_Set_Pen(CL_BLACK, 10);

TFT_Set_Brush

Prototype

procedure TFT_Set_Brush(brush_enabled : byte; brush_color : word; gradient_enabled, gradient_orientation : byte; gradient_color_from, gradient_color_to : word);
Returns

Nothing.
Description

Sets color and gradient which will be used to fill circles or rectangles.

Parameters :

  • brush_enabled: enable brush fill.

    Value Description
    1 Enable brush fill.
    0 Disable brush fill.

  • brush_color: set brush fill color.

    Value Description
    CL_AQUA Aqua color
    CL_BLACK Black color
    CL_BLUE Blue color
    CL_FUCHSIA Fuchsia color
    CL_GRAY Gray color
    CL_GREEN Green color
    CL_LIME Lime color
    CL_MAROON Maroon color
    CL_NAVY Navy color
    CL_OLIVE Olive color
    CL_PURPLE Purple color
    CL_RED Red color
    CL_SILVER Silver color
    CL_TEAL Teal color
    CL_WHITE White color
    CL_YELLOW Yellow color

  • gradient_enabled: enable gradient

    Value Description
    1 Enable gradient.
    0 Disable gradient.

  • gradient_orientation: sets gradient orientation :

    Value Description
    LEFT_TO_RIGHT Left to right gradient orientation
    TOP_TO_BOTTOM Top to bottom gradient orientation

  • gradient_color_from: sets the starting gradient color.

    Value Description
    CL_AQUA Aqua color
    CL_BLACK Black color
    CL_BLUE Blue color
    CL_FUCHSIA Fuchsia color
    CL_GRAY Gray color
    CL_GREEN Green color
    CL_LIME Lime color
    CL_MAROON Maroon color
    CL_NAVY Navy color
    CL_OLIVE Olive color
    CL_PURPLE Purple color
    CL_RED Red color
    CL_SILVER Silver color
    CL_TEAL Teal color
    CL_WHITE White color
    CL_YELLOW Yellow color

  • gradient_color_to: sets the ending gradient color.

    Value Description
    CL_AQUA Aqua color
    CL_BLACK Black color
    CL_BLUE Blue color
    CL_FUCHSIA Fuchsia color
    CL_GRAY Gray color
    CL_GREEN Green color
    CL_LIME Lime color
    CL_MAROON Maroon color
    CL_NAVY Navy color
    CL_OLIVE Olive color
    CL_PURPLE Purple color
    CL_RED Red color
    CL_SILVER Silver color
    CL_TEAL Teal color
    CL_WHITE White color
    CL_YELLOW Yellow color

Requires

TFT module needs to be initialized. Please, see appropriate TFT initialization routine.
Example 
// Enable gradient from black to white color, left-right orientation
TFT_Set_Brush(0, 0, 1, LEFT_TO_RIGHT, CL_BLACK, CL_WHITE);

TFT_Line

Prototype

procedure TFT_Line(x1, y1, x2, y2 : integer);
Returns

Nothing.
Description

Draws a line from (x1, y1) to (x2, y2).

Parameters :

  • x1: x coordinate of the line start.
  • y1: y coordinate of the line end.
  • x2: x coordinate of the line start.
  • y2: y coordinate of the line end.
Requires

TFT module needs to be initialized. Please, see appropriate TFT initialization routine.
Example 
TFT_Line(0, 0, 239, 127);

TFT_H_Line

Prototype

procedure TFT_H_Line(x_start, x_end, y_pos : integer);
Returns

Nothing.
Description

Draws a horizontal line on TFT.

Parameters :

  • x_start: x coordinate of the line start.
  • x_end: x coordinate of the line end.
  • y_pos: y coordinate of horizontal line.
Requires

TFT module needs to be initialized. Please, see appropriate TFT initialization routine.
Example 
// Draw a horizontal line between dots (10,20) and (50,20)
TFT_H_Line(10, 50, 20);

TFT_V_Line

Prototype

procedure TFT_V_Line(y_start, y_end, x_pos : integer);
Returns

Nothing.
Description

Draws a vertical line on TFT.

Parameters :

  • y_start: y coordinate of the line start.
  • y_end: y coordinate of the line end.
  • x_pos: x coordinate of vertical line.
Requires

TFT module needs to be initialized. Please, see appropriate TFT initialization routine.
Example 
// Draw a vertical line between dots (10,5) and (10,25)
TFT_V_Line(5, 25, 10);

TFT_Rectangle

Prototype

procedure TFT_Rectangle(x_upper_left, y_upper_left, x_bottom_right, y_bottom_right:integer);
Returns

Nothing.
Description

Draws a rectangle on TFT.

Parameters :

  • x_upper_left: x coordinate of the upper left rectangle corner.
  • y_upper_left: y coordinate of the upper left rectangle corner.
  • x_bottom_right: x coordinate of the lower right rectangle corner.
  • y_bottom_right: y coordinate of the lower right rectangle corner.
Requires

TFT module needs to be initialized. Please, see appropriate TFT initialization routine.
Example 
TFT_Rectangle(20, 20, 219, 107);

TFT_Rectangle_Round_Edges

Prototype

procedure TFT_Rectangle_Round_Edges(x_upper_left, y_upper_left, x_bottom_right, y_bottom_right, round_radius : word);
Returns

Nothing.
Description

Draws a rounded edge rectangle on TFT.

Parameters :

  • x_upper_left: x coordinate of the upper left rectangle corner.
  • y_upper_left: y coordinate of the upper left rectangle corner.
  • x_bottom_right: x coordinate of the lower right rectangle corner.
  • y_bottom_right: y coordinate of the lower right rectangle corner.
  • round_radius: radius of the rounded edge.
Requires

TFT module needs to be initialized. Please, see appropriate TFT initialization routine.
Example 
TFT_Rectangle_Round_Edges(20, 20, 219, 107, 12);

TFT_Circle

Prototype

procedure TFT_Circle(x_center, y_center, radius : integer);
Returns

Nothing.
Description

Draws a circle on TFT.

Parameters :

  • x: x coordinate of the circle center.
  • y: y coordinate of the circle center.
  • r: radius size.
Requires

TFT module needs to be initialized. Please, see appropriate TFT initialization routine.
Example 
TFT_Circle(120, 64, 110);

TFT_Image

Prototype

procedure TFT_Image(left, top : word; image : ^const far byte; stretch : byte);
Returns

Nothing.
Description

Displays an image on a desired location.

Parameters :

  • left: position of the image's left edge.
  • top:position of the image's top edge.
  • image: image to be displayed. Bitmap array is located in code memory.
  • stretch: stretches image by a given factor (if 2, it will double the image.).
Requires

TFT module needs to be initialized. Please, see appropriate TFT initialization routine.
Example 
TFT_Image(0, 0, @image, 1);

TFT_Ext_Image

Prototype

procedure TFT_Ext_Image(left, top : word; image : dword; stretch : byte);
Returns

Nothing.
Description

Displays an image from an external resource on a desired address.

Parameters :

  • left: position of the image's left edge.
  • top:position of the image's top edge.
  • image: image to be displayed. This parameter represents the address in the exteral resource from where the image data begins.
  • stretch: stretches image by a given factor (if 2, it will double the image.).
Requires

TFT module needs to be initialized. Please, see appropriate TFT initialization routine.
Example 
TFT_Image(0, 0, 153608, 1);

TFT_Partial_Image

Prototype

procedure TFT_Partial_Image(left, top, width, height : word; image : ^const far byte; stretch : byte) ;
Returns

Nothing.
Description

Displays a partial area of the image on a desired location.

Parameters :

  • left: left coordinate of the image.
  • top: top coordinate of the image.
  • width: desired image width.
  • height: desired image height.
  • image: image to be displayed. Bitmap array is located in code memory.
  • stretch: stretches image by a given factor (if 2, it will double the image.).
Requires

TFT module needs to be initialized. Please, see appropriate TFT initialization routine.
Example 
// Draws a 10x15 part of the image starting from the upper left corner on the coordinate (10,12)  
TFT_PartialImage(10, 12, 10, 15, @image, 1);

TFT_Ext_Partial_Image

Prototype

procedure TFT_Ext_Partial_Image(left, top, width, height : word; image : dword; stretch : byte) ;
Returns

Nothing.
Description

Displays a partial area of the image, located on an external resource, on a desired location of the screen.

Parameters :

  • left: left coordinate of the image.
  • top: top coordinate of the image.
  • width: desired image width.
  • height: desired image height.
  • image: image to be displayed. This parameter represents the address in the exteral resource from where the image data begins.
  • stretch: stretches image by a given factor (if 2, it will double the image.).
Requires

TFT module needs to be initialized. Please, see appropriate TFT initialization routine.
Example 
TFT_Ext_Partial_Image(159,0,160,120,0,1);

TFT_Image_Jpeg

Prototype

function TFT_Image_Jpeg(left, top : word; image : ^const far byte): byte;
Returns
  • 0 - if image is loaded and displayed successfully.
  • 1 - if error occured.
Description

Displays a JPEG image on a desired location.

Parameters :

  • left: left coordinate of the image.
  • top: top coordinate of the image.
  • image: image to be displayed. Bitmap array is located in code memory.
Requires

TFT module needs to be initialized. Please, see appropriate TFT initialization routine.
Example 
TFT_Image_Jpeg(0, 0, @image);

TFT_RGBToColor16bit

Prototype

function TFT_RGBToColor16bit(rgb_red, rgb_green, rgb_blue : byte) : word;
Returns

Returns a color value in the following bit-order : 5 bits red, 6 bits green and 5 bits blue color.
Description

Converts 5:6:5 RGB format into true color format.

Parameters :

  • rgb_red: red component of the image.
  • rgb_green: green component of the image.
  • rgb_blue: blue component of the image.
Requires

TFT module needs to be initialized. Please, see appropriate TFT initialization routine.
Example 
color16 := TFT_RGBToColor16bit(150, 193, 65);

TFT_Color16bitToRGB

Prototype

procedure TFT_Color16bitToRGB(color : word; rgb_red, rgb_green, rgb_blue : ^byte);
Returns

Nothing.
Description

Converts true color into 5:6:5 RGB format.

Parameters :

  • color: true color to be converted.
  • rgb_red: red component of the input color.
  • rgb_green: green component of the input color.
  • rgb_blue: blue component of the input color.
Requires

TFT module needs to be initialized. Please, see appropriate TFT initialization routine.
Example 
TFT_Color16bitToRGB(start_color, @red_start, @green_start, @blue_start);

TFT_Rotate_180

Prototype

procedure TFT_Rotate_180(rotate : byte);
Returns

Nothing.
Description

Rotates the TFT display.

Parameters :

  • rotate: parameter for rotating display. Valid values :
    • 0 - display will not be rotated.
    • 1 - display will be rotated for 180 degrees.
Requires

TFT module needs to be initialized. Please, see appropriate TFT initialization routine.
Example 
// Rotate TFT display for 180 degrees
TFT_Rotate_180(1);

// Initialize TFT display
TFT_Init(240, 320);

HW Connection

TFT HW connection

TFT HW connection

Copyright (c) 2002-2012 mikroElektronika. All rights reserved.
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