Modified to work with two displays

Dependents:   touch2 default CANary_9341_test CANary_merge

Fork of SPI_TFT by Peter Drescher

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SPI_TFTx2 Class Reference

Display control class, based on GraphicsDisplay and TextDisplay. More...

#include <SPI_TFTx2.h>

Inherits GraphicsDisplay.

Public Member Functions

 SPI_TFTx2 (PinName mosi, PinName miso, PinName sclk, PinName cs0, PinName cs1, PinName reset, const char *name="TFT")
 Create a SPI_TFTx2 object connected to SPI and two pins.
virtual int width ()
 Get the width of the screen in pixel.
virtual int height ()
 Get the height of the screen in pixel.
virtual void pixel (int x, int y, int colour)
 Draw a pixel at x,y with color.
void circle (int x, int y, int r, int colour)
 draw a circle
void fillcircle (int x, int y, int r, int colour)
 draw a filled circle
void line (int x0, int y0, int x1, int y1, int colour)
 draw a 1 pixel line
void rect (int x0, int y0, int x1, int y1, int colour)
 draw a rect
void fillrect (int x0, int y0, int x1, int y1, int colour)
 draw a filled rect
virtual void locate (int x, int y)
 setup cursor position
virtual void cls (void)
 Fill the screen with _backgroun color.
virtual int columns (void)
 calculate the max number of char in a line
virtual int rows (void)
 calculate the max number of columns
virtual int _putc (int value)
 put a char on the screen
virtual void character (int x, int y, int c)
 draw a character on given position out of the active font to the TFT
void Bitmap (unsigned int x, unsigned int y, unsigned int w, unsigned int h, unsigned char *bitmap)
 paint a bitmap on the TFT
int BMP_16 (unsigned int x, unsigned int y, const char *Name_BMP)
 paint a 16 bit BMP from local filesytem on the TFT (slow)
void set_font (unsigned char *f)
 select the font to use
void set_orientation (unsigned int o)
 Set the orientation of the screen x,y: 0,0 is always top left.
virtual bool claim (FILE *stream)
 redirect output from a stream (stout, sterr) to display

Protected Member Functions

void WindowMax (void)
 Set draw window region to whole screen.
void hline (int x0, int x1, int y, int colour)
 draw a horizontal line
void vline (int y0, int y1, int x, int colour)
 draw a vertical line
void window (unsigned int x, unsigned int y, unsigned int w, unsigned int h)
 Set draw window region.
void tft_reset ()
 Init the HX8347D controller.
void wr_dat (unsigned char value)
 Write data to the LCD controller.
void wr_cmd (unsigned char value)
 Write a command the LCD controller.
void wr_dat_only (unsigned short dat)
 Start data sequence to the LCD controller.
unsigned short rd_dat (void)
 Read data from the LCD controller.
void wr_reg (unsigned char reg, unsigned char val)
 Write a value to the to a LCD register.
unsigned short rd_reg (unsigned char reg)
 Read a LCD register.

Detailed Description

Display control class, based on GraphicsDisplay and TextDisplay.

Example:

 #include "stdio.h"
 #include "mbed.h"
 #include "SPI_TFTx2.h"
 #include "string"
 #include "Arial12x12.h"
 #include "Arial24x23.h"
 


 // the TFT is connected to SPI pin 5-7 
 SPI_TFTx2 TFT(p5, p6, p7, p8, p9, p15,"TFT"); // mosi, miso, sclk, cs0, cs1, reset
 
 int main() {
     TFT.claim(stdout);      // send stdout to the TFT display 
     //TFT.claim(stderr);      // send stderr to the TFT display

     TFT.background(Black);    // set background to black
     TFT.foreground(White);    // set chars to white
     TFT.cls();                // clear the screen
     TFT.set_font((unsigned char*) Arial12x12);  // select the font
     
     TFT.set_orientation(0);
     TFT.set_display(0);
     TFT.locate(0,0);
     printf("  Hello Mbed 0");
     TFT.set_font((unsigned char*) Arial24x23);  // select font 2
     TFT.locate(48,115);
     TFT.printf("Bigger Font");
  }

Definition at line 104 of file SPI_TFTx2.h.


Constructor & Destructor Documentation

SPI_TFTx2 ( PinName  mosi,
PinName  miso,
PinName  sclk,
PinName  cs0,
PinName  cs1,
PinName  reset,
const char *  name = "TFT" 
)

Create a SPI_TFTx2 object connected to SPI and two pins.

Parameters:
mosi,miso,sclkSPI
cs0pin connected to CS of left display
cs1pin connected to CS of right display
resetpin connected to RESET of display

Definition at line 42 of file SPI_TFTx2.cpp.


Member Function Documentation

int _putc ( int  value ) [virtual]

put a char on the screen

Parameters:
valuechar to print
Returns:
printed char

Definition at line 880 of file SPI_TFTx2.cpp.

void Bitmap ( unsigned int  x,
unsigned int  y,
unsigned int  w,
unsigned int  h,
unsigned char *  bitmap 
)

paint a bitmap on the TFT

Parameters:
x,y: upper left corner
wwidth of bitmap
hhigh of bitmap
*bitmappointer to the bitmap data

bitmap format: 16 bit R5 G6 B5

use Gimp to create / load , save as BMP, option 16 bit R5 G6 B5 use winhex to load this file and mark data stating at offset 0x46 to end use edit -> copy block -> C Source to export C array paste this array into your program

define the array as static const unsigned char to put it into flash memory cast the pointer to (unsigned char *) : tft.Bitmap(10,40,309,50,(unsigned char *)scala);

Definition at line 1063 of file SPI_TFTx2.cpp.

int BMP_16 ( unsigned int  x,
unsigned int  y,
const char *  Name_BMP 
)

paint a 16 bit BMP from local filesytem on the TFT (slow)

Parameters:
x,y: upper left corner
*Name_BMPname of the BMP file
Returns:
1 if bmp file was found and painted
-1 if bmp file was found not found
-2 if bmp file is not 16bit
-3 if bmp file is to big for screen
-4 if buffer malloc go wrong

bitmap format: 16 bit R5 G6 B5

use Gimp to create / load , save as BMP, option 16 bit R5 G6 B5 copy to internal file system

Definition at line 1145 of file SPI_TFTx2.cpp.

void character ( int  x,
int  y,
int  c 
) [virtual]

draw a character on given position out of the active font to the TFT

Parameters:
xx-position of char (top left)
yy-position
cchar to print

Definition at line 897 of file SPI_TFTx2.cpp.

void circle ( int  x,
int  y,
int  r,
int  colour 
)

draw a circle

Parameters:
x0,y0center
rradius
color16 bit color *

Definition at line 442 of file SPI_TFTx2.cpp.

bool claim ( FILE *  stream ) [virtual, inherited]

redirect output from a stream (stout, sterr) to display

Parameters:
streamstream that shall be redirected to the TextDisplay

Definition at line 65 of file TextDisplay.cpp.

void cls ( void   ) [virtual]

Fill the screen with _backgroun color.

Definition at line 356 of file SPI_TFTx2.cpp.

int columns ( void   ) [virtual]

calculate the max number of char in a line

Returns:
max columns depends on actual font size

Definition at line 866 of file SPI_TFTx2.cpp.

void fillcircle ( int  x,
int  y,
int  r,
int  colour 
)

draw a filled circle

Parameters:
x0,y0center
rradius
color16 bit color *

use circle with different radius, can miss some pixel

Definition at line 550 of file SPI_TFTx2.cpp.

void fillrect ( int  x0,
int  y0,
int  x1,
int  y1,
int  colour 
)

draw a filled rect

Parameters:
x0,y0top left corner
x1,y1down right corner
color16 bit color

Definition at line 779 of file SPI_TFTx2.cpp.

int height (  ) [virtual]

Get the height of the screen in pixel.

Returns:
height of screen in pixel

Definition at line 63 of file SPI_TFTx2.cpp.

void hline ( int  x0,
int  x1,
int  y,
int  colour 
) [protected]

draw a horizontal line

Parameters:
x0horizontal start
x1horizontal stop
yvertical position
color16 bit color

Definition at line 559 of file SPI_TFTx2.cpp.

void line ( int  x0,
int  y0,
int  x1,
int  y1,
int  colour 
)

draw a 1 pixel line

Parameters:
x0,y0start point
x1,y1stop point
color16 bit color

Definition at line 686 of file SPI_TFTx2.cpp.

void locate ( int  x,
int  y 
) [virtual]

setup cursor position

Parameters:
xx-position (top left)
yy-position

Definition at line 858 of file SPI_TFTx2.cpp.

void pixel ( int  x,
int  y,
int  colour 
) [virtual]

Draw a pixel at x,y with color.

Parameters:
xhorizontal position
yvertical position
color16 bit pixel color

Definition at line 293 of file SPI_TFTx2.cpp.

unsigned short rd_dat ( void   ) [protected]

Read data from the LCD controller.

Returns:
data from LCD controller

Definition at line 164 of file SPI_TFTx2.cpp.

unsigned short rd_reg ( unsigned char  reg ) [protected]

Read a LCD register.

Parameters:
regregister to be read
Returns:
value of the register

Definition at line 179 of file SPI_TFTx2.cpp.

void rect ( int  x0,
int  y0,
int  x1,
int  y1,
int  colour 
)

draw a rect

Parameters:
x0,y0top left corner
x1,y1down right corner
color16 bit color *

Definition at line 759 of file SPI_TFTx2.cpp.

int rows ( void   ) [virtual]

calculate the max number of columns

Returns:
max column depends on actual font size

Definition at line 873 of file SPI_TFTx2.cpp.

void set_font ( unsigned char *  f )

select the font to use

Parameters:
fpointer to font array

font array can created with GLCD Font Creator from http://www.mikroe.com you have to add 4 parameter at the beginning of the font array to use:

  • the number of byte / char
  • the vertial size in pixel
  • the horizontal size in pixel
  • the number of byte per vertical line you also have to change the array to char[]

Definition at line 1058 of file SPI_TFTx2.cpp.

void set_orientation ( unsigned int  o )

Set the orientation of the screen x,y: 0,0 is always top left.

Parameters:
odirection to use the screen (0-3) 90&#65533; Steps

Definition at line 70 of file SPI_TFTx2.cpp.

void tft_reset (  ) [protected]

Init the HX8347D controller.

Definition at line 185 of file SPI_TFTx2.cpp.

void vline ( int  y0,
int  y1,
int  x,
int  colour 
) [protected]

draw a vertical line

Parameters:
xhorizontal position
y0vertical start
y1vertical stop
color16 bit color

Definition at line 623 of file SPI_TFTx2.cpp.

int width (  ) [virtual]

Get the width of the screen in pixel.

Parameters:
@returnswidth of screen in pixel

Definition at line 56 of file SPI_TFTx2.cpp.

void window ( unsigned int  x,
unsigned int  y,
unsigned int  w,
unsigned int  h 
) [protected]

Set draw window region.

Parameters:
xhorizontal position
yvertical position
wwindow width in pixel
hwindow height in pixels

Definition at line 337 of file SPI_TFTx2.cpp.

void WindowMax ( void   ) [protected]

Set draw window region to whole screen.

Definition at line 350 of file SPI_TFTx2.cpp.

void wr_cmd ( unsigned char  value ) [protected]

Write a command the LCD controller.

Parameters:
cmd,:command to be written

Definition at line 97 of file SPI_TFTx2.cpp.

void wr_dat ( unsigned char  value ) [protected]

Write data to the LCD controller.

Parameters:
datdata written to LCD controller

Definition at line 129 of file SPI_TFTx2.cpp.

void wr_dat_only ( unsigned short  dat ) [protected]

Start data sequence to the LCD controller.

Stop of data writing to the LCD controller write data to the LCD controller

Parameters:
datato be written *
void wr_reg ( unsigned char  reg,
unsigned char  val 
) [protected]

Write a value to the to a LCD register.

Parameters:
regregister to be written
valdata to be written

Definition at line 173 of file SPI_TFTx2.cpp.