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 mikroC 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 :
extern sfr char TFT_DataPort; TFT Data Port. char TFT_DataPort at LATD;
extern sfr char TFT_DataPort_Direction; Direction of the TFT Data Port. char TFT_DataPort_Direction at TRISD;
extern sfr sbit TFT_WR; Write signal. sbit TFT_WR at LATE1_bit;
extern sfr sbit TFT_RD; Read signal. sbit TFT_RD at LATE0_bit;
extern sfr sbit TFT_CS; Chip Select signal. sbit TFT_CS at LATG3_bit;
extern sfr sbit TFT_RS; Command/Register Select signal. sbit TFT_RS at LATH6_bit;
extern sfr sbit TFT_RST; Reset signal. sbit TFT_RST at LATH4_bit;
extern sfr sbit TFT_WR_Direction; Direction of the Write pin. sbit TFT_WR_Direction at TRISE1_bit;
extern sfr sbit TFT_RD_Direction; Direction of the Read pin. sbit TFT_WR_Direction at TRISE0_bit;
extern sfr sbit TFT_CS_Direction; Direction of the Chip Select pin. sbit TFT_CS_Direction at TRISG3_bit;
extern sfr sbit TFT_RS_Direction; Direction of the Register Select pin. sbit TFT_RS_Direction at TRISH6_bit;
extern sfr sbit TFT_RST_Direction; Direction of the Reset pin. sbit TFT_RST_Direction at TRISH4_bit;

Library Routines

TFT_Init

Prototype

void TFT_Init(unsigned int display_width, unsigned char display_height);
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
char TFT_DataPort at LATD;
sbit TFT_WR at LATE1_bit;
sbit TFT_RD at LATE0_bit;
sbit TFT_CS at LATG3_bit;
sbit TFT_RS at LATH6_bit;
sbit TFT_RST at LATH4_bit;

char TFT_DataPort_Direction at TRISD;
sbit TFT_WR_Direction : at TRISE1_bit;
sbit TFT_RD_Direction at TRISE0_bit;
sbit TFT_CS_Direction at TRISG3_bit;
sbit TFT_RS_Direction at TRISH6_bit;
sbit TFT_RST_Direction at TRISH4_bit;
// End of TFT display connections

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

TFT_Init_HX8347G

Prototype

void TFT_Init_HX8347G(unsigned int display_width, unsigned char display_height);
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
char TFT_DataPort at LATD;
sbit TFT_WR at LATE1_bit;
sbit TFT_RD at LATE0_bit;
sbit TFT_CS at LATG3_bit;
sbit TFT_RS at LATH6_bit;
sbit TFT_RST at LATH4_bit;

char TFT_DataPort_Direction at TRISD;
sbit TFT_WR_Direction : at TRISE1_bit;
sbit TFT_RD_Direction at TRISE0_bit;
sbit TFT_CS_Direction at TRISG3_bit;
sbit TFT_RS_Direction at TRISH6_bit;
sbit TFT_RST_Direction at TRISH4_bit;
// End of TFT display connections

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

TFT_Init_SSD1963_8bit

Prototype

void TFT_Init_SSD1963_8bit(unsigned int display_width, unsigned char display_height);
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
char TFT_DataPort at LATD;
sbit TFT_WR at LATE1_bit;
sbit TFT_RD at LATE0_bit;
sbit TFT_CS at LATG3_bit;
sbit TFT_RS at LATH6_bit;
sbit TFT_RST at LATH4_bit;

char TFT_DataPort_Direction at TRISD;
sbit TFT_WR_Direction : at TRISE1_bit;
sbit TFT_RD_Direction at TRISE0_bit;
sbit TFT_CS_Direction at TRISG3_bit;
sbit TFT_RS_Direction at TRISH6_bit;
sbit TFT_RST_Direction at TRISH4_bit;
// End of TFT display connections

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

TFT_Init_R61526

Prototype

void TFT_Init_R61526(unsigned int display_width, unsigned char display_height);
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
char TFT_DataPort at LATD;
sbit TFT_WR at LATE1_bit;
sbit TFT_RD at LATE0_bit;
sbit TFT_CS at LATG3_bit;
sbit TFT_RS at LATH6_bit;
sbit TFT_RST at LATH4_bit;

char TFT_DataPort_Direction at TRISD;
sbit TFT_WR_Direction : at TRISE1_bit;
sbit TFT_RD_Direction at TRISE0_bit;
sbit TFT_CS_Direction at TRISG3_bit;
sbit TFT_RS_Direction at TRISH6_bit;
sbit TFT_RST_Direction at TRISH4_bit;
// End of TFT display connections

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

TFT_Init_SST7715R

Prototype

void TFT_Init_SST7715R(unsigned int display_width, unsigned char display_height);
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
char TFT_DataPort at LATD;
sbit TFT_WR at LATE1_bit;
sbit TFT_RD at LATE0_bit;
sbit TFT_CS at LATG3_bit;
sbit TFT_RS at LATH6_bit;
sbit TFT_RST at LATH4_bit;

char TFT_DataPort_Direction at TRISD;
sbit TFT_WR_Direction : at TRISE1_bit;
sbit TFT_RD_Direction at TRISE0_bit;
sbit TFT_CS_Direction at TRISG3_bit;
sbit TFT_RS_Direction at TRISH6_bit;
sbit TFT_RST_Direction at TRISH4_bit;
// End of TFT display connections

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

TFT_Init_ILI9340_8bit

Prototype

void TFT_Init_ILI9340_8bit(unsigned int display_width, unsigned char display_height);
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
char TFT_DataPort at LATD;
sbit TFT_WR at LATE1_bit;
sbit TFT_RD at LATE0_bit;
sbit TFT_CS at LATG3_bit;
sbit TFT_RS at LATH6_bit;
sbit TFT_RST at LATH4_bit;

char TFT_DataPort_Direction at TRISD;
sbit TFT_WR_Direction : at TRISE1_bit;
sbit TFT_RD_Direction at TRISE0_bit;
sbit TFT_CS_Direction at TRISG3_bit;
sbit TFT_RS_Direction at TRISH6_bit;
sbit TFT_RST_Direction at TRISH4_bit;
// End of TFT display connections

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

TFT_Init_ILI9481_8bit

Prototype

void TFT_Init_ILI9481_8bit(unsigned int display_width, unsigned char display_height);
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
char TFT_DataPort at LATD;
sbit TFT_WR at LATE1_bit;
sbit TFT_RD at LATE0_bit;
sbit TFT_CS at LATG3_bit;
sbit TFT_RS at LATH6_bit;
sbit TFT_RST at LATH4_bit;

char TFT_DataPort_Direction at TRISD;
sbit TFT_WR_Direction : at TRISE1_bit;
sbit TFT_RD_Direction at TRISE0_bit;
sbit TFT_CS_Direction at TRISG3_bit;
sbit TFT_RS_Direction at TRISH6_bit;
sbit TFT_RST_Direction at TRISH4_bit;
// End of TFT display connections

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

TFT_Set_Index

Prototype

void TFT_Set_Index(unsigned short index);
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

void TFT_Write_Command(unsigned short cmd);
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

void TFT_Write_Data(unsigned int _data);
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

void TFT_Set_Reg(unsigned short index, unsigned short value);
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

void TFT_Set_Ext_Buffer(char* (*getExtDataPtr)(unsigned long offset, unsigned int count, unsigned int *num));
Returns

Nothing.
Description

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

Parameters :

  • 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 
char* ReadExternalBuffer(unsigned long offset, unsigned int count, unsigned int *num){
  unsigned long start_sector;
  unsigned int pos;

  start_sector = Mmc_Get_File_Write_Sector() + offset/512;
  pos = (unsigned long)offset%512;

  if(start_sector == currentSector+1){
    Mmc_Multi_Read_Buffer(EXT_BUFFER);
    currentSector = start_sector;
  }else
    if(start_sector != currentSector){
      Mmc_Multi_Read_Stop();
      Mmc_Multi_Read_Start(start_sector);
      Mmc_Multi_Read_Buffer(EXT_BUFFER);
      currentSector = start_sector;
    }

  if(count>512-pos){
    *num = 512-pos;
  }
  else
    *num = count;

  return EXT_BUFFER+pos;
}

TFT_Set_Ext_Buffer(ReadExternalBuffer);

TFT_Set_Active

Prototype

void TFT_Set_Active(void (*Set_Index_Ptr)(unsigned short), void (*Write_Command_Ptr)(unsigned short), void (*Write_Data_Ptr)(unsigned int));
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 :

void Set_Index(unsigned short index) {
  TFT_RS = 0;
  Lo(LATD) = index;
  TFT_WR = 0;
  TFT_WR = 1;
}

void Write_Command(unsigned short cmd) {
  TFT_RS = 1;
  Lo(LATD) = cmd;
  TFT_WR = 0;
  TFT_WR = 1;
}

void Write_Data(unsigned int _data) {
  TFT_RS = 1;
  Lo(LATE) = Hi(_data);
  Lo(LATD) = Lo(_data);
  TFT_WR = 0;
  TFT_WR = 1;
}

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

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

  .....
}

TFT_Set_Default_Mode

Prototype

void TFT_Set_Default_Mode();
Returns

Nothing.
Description

This function sets TFT in default working mode.

Parameters :

  • None.
Requires

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

TFT_Set_Font

Prototype

void TFT_Set_Font(const char far *activeFont, unsigned int font_color, char font_orientation);
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

void TFT_Set_Ext_Font(unsigned long *activeFont, unsigned int font_color, char font_orientation);
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

void TFT_Write_Char(unsigned int c, unsigned int x, unsigned int y);
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

void TFT_Write_Text(unsigned char *text, unsigned int x, unsigned int y);
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

void TFT_Write_Const_Text(const char *text, unsigned int x, unsigned int y);
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

void TFT_Fill_Screen(unsigned int color);
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

void TFT_Dot(int x, int y, unsigned int color);
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

void TFT_Set_Pen(unsigned int pen_color, char pen_width);
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

void TFT_Set_Brush(char brush_enabled, unsigned int brush_color, char gradient_enabled, char gradient_orientation, unsigned int gradient_color_from, unsigned int gradient_color_to);
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

void TFT_Line(int x1, int y1, int x2, int y2);
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

void TFT_H_Line(int x_start, int x_end, int y_pos);
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

void TFT_V_Line(int y_start, int y_end, int x_pos);
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

void TFT_Rectangle(int x_upper_left, int y_upper_left, int x_bottom_right, int y_bottom_right);
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

void TFT_Rectangle_Round_Edges(unsigned int x_upper_left, unsigned int y_upper_left, unsigned int x_bottom_right, unsigned int y_bottom_right, unsigned int round_radius);
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

void TFT_Circle(int x_center, int y_center, int radius);
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

void TFT_Image(unsigned int left, unsigned int top, code const far unsigned short * image, unsigned short stretch);
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

void TFT_Ext_Image(unsigned int left, unsigned int top, unsigned long image, unsigned short stretch);
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

void TFT_Partial_Image(unsigned int left, unsigned int top, unsigned int width, unsigned int height, code const far unsigned short * image, unsigned short stretch);
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_Partial_Image(10, 12, 10, 15, image, 1);

TFT_Ext_Partial_Image

Prototype

void TFT_Ext_Partial_Image(unsigned int left, unsigned int top, unsigned int width, unsigned int height, unsigned long image, unsigned short stretch);
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

char TFT_Image_Jpeg(unsigned int left, unsigned int top, code const far unsigned short *image);
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

unsigned int TFT_RGBToColor16bit(char rgb_red, char rgb_green, char rgb_blue);
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

void TFT_Color16bitToRGB(unsigned int color, char *rgb_red, char *rgb_green, char *rgb_blue);
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

void TFT_Rotate_180(char rotate);
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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