Paul Staron / SharpMemoryLCD

Sharp Memory LCD library

Dependencies:   Fonts Images BurstSPI

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SharpLCD Class Reference
Public Member Functions

SharpLCD Class Reference

Sharp Memory LCD. More...

#include <SharpLCD.h>

Public Member Functions

void set_font (const unsigned char *f)
 Sets external font usage, eg.
void locate (int column, int row)
 Sets position of the next character or string print.
void printf (const char *format,...)
 printf (from Stream).
void enableDisplay (void)
 Enables (power) display.
void disableDisplay (void)
 Dissables (power) display.
void pixel (int x, int y, int colour)
 Set a pixel in the pixel buffer.
void rect (int x0, int y0, int x1, int y1, int colour)
 Draw rectangle one pixel wide (wire frame) in the pixel buffer.
void fillrect (int x0, int y0, int w, int h, int colour)
 Draw filled rectangle in the pixel buffer.
void circle (int x, int y, int r, int colour)
 Draw Circle one pixel wide in the pixel buffer.
void ellipse (int xc, int yc, int v, int h, unsigned int colour)
 Draw Ellipse or Circle one pixel wide in the pixel buffer.
void fillellipse (int xc, int yc, int v, int h, unsigned int colour)
 Draw Filled Ellipse or Circle in the pixel buffer.
void hline (int x0, int x1, int y, int colour)
 Draw a horizontal line one pixel wide in the pixel buffer.
void vline (int x0, int y0, int y1, int colour)
 Draw a Vertical line one pixel wide in the pixel buffer.
void line (int x0, int y0, int x1, int y1, int colour)
 Draw a Line in the pixel buffer.
void toggle ()
 Toggles the EXTCOM connection to the display if used.
void update ()
 Transfers pixel buffer to the display.
void clearImmediate ()
 Clear the display & set pixel buffer to zero.
void showBMP (const uint8_t *bitmap, const uint32_t bmpWidth, const uint32_t bmpHeight, const uint32_t startX, const uint32_t startY)
 Move bitmap into pixel buffer.
void character (int column, int row, int c)
 Output a character at the given position.
int rows ()
 return number if rows on TextDisplay
int columns ()
 return number if columns on TextDisplay

Detailed Description

Sharp Memory LCD.

Supports 96x96, 128x128, 400x240 displays. Uses a Frame Buffer in RAM depending on resolution of display as follows: 96 Display - 1.7k, 128 Display - 2.6k, 400 Display - 12.4k

Example: 

#include "mbed.h"
#include "SharpLCD.h"

//KL25
SharpLCD display(PTC6, NC, PTC5, PTC3, PTC4, NC); //mosi, miso(not used), sck, cs, enable, extcom

int main()
{        
    display.enableDisplay();    

    while(1)
    {
       display.clearImmediate();
        // draw ellipse (To draw circle, set the last two axis the same)
        for (int j=0; j<60; j++) {
            display.ellipse(64,64,j,60,Black);
            display.update();
            //wait(.01);
            display.ellipse(64,64,j,50,White); // offset last axis here gives interesting effect!
            display.locate(5,6); 
            display.printf("Sharp");
            display.locate(2,8); 
            display.printf("Draw Ellipse");
            display.locate(4,10); 
            display.printf("MemoryLCD"); 
            display.update();
        }
        // draw rectangle
        for (int j=0; j<128; j++) {
            display.rect(0,0,j,j,Black);
            display.update();
            //wait(.01);
            display.rect(0,0,j,j,White); 
            display.locate(5,6); 
            display.printf("Sharp");
            display.locate(1,8); 
            display.printf("Draw Rectangle");
            display.locate(4,10); 
            display.printf("MemoryLCD"); 
            display.update();
        }
         for (int j=60; j>0; j--) {
            display.circle(64,64,j,Black);
            display.update();
            wait(.01);
            display.circle(64,64,j,White); 
            display.locate(5,6); 
            display.printf("Sharp");
            display.locate(2,8); 
            display.printf("Draw Circle");
            display.locate(4,10); 
            display.printf("MemoryLCD"); 
            display.update();
        }   
    }            
}

Definition at line 99 of file SharpLCD.h.

Member Function Documentation

void character ( int  column,
int  row,
int  c 
)

Output a character at the given position.

Parameters:
columncolumn where charater must be written
rowwhere character must be written
cthe character to be written to the TextDisplay

Definition at line 257 of file SharpLCD.cpp.

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

Draw Circle one pixel wide in the pixel buffer.

Parameters:
x0X-Centre position.
y0Y-Centre position.
rRadius.
colourColour to set pixel to. White or Black.

Definition at line 354 of file SharpLCD.cpp.

void clearImmediate (  )

Clear the display & set pixel buffer to zero.

Definition at line 144 of file SharpLCD.cpp.

int columns (  )

return number if columns on TextDisplay

Returns:
number of rows

Definition at line 565 of file SharpLCD.cpp.

void disableDisplay ( void   )

Dissables (power) display.

Definition at line 140 of file SharpLCD.cpp.

void ellipse ( int  xc,
int  yc,
int  v,
int  h,
unsigned int  colour 
)

Draw Ellipse or Circle one pixel wide in the pixel buffer.

Set v & h to same values to produce a circle.

Parameters:
xcX-Centre position.
ycY-Centre position.
vVertical radius.
hHorizontal radius.
colourColour to set pixel to. White or Black.

Definition at line 374 of file SharpLCD.cpp.

void enableDisplay ( void   )

Enables (power) display.

Definition at line 136 of file SharpLCD.cpp.

void fillellipse ( int  xc,
int  yc,
int  v,
int  h,
unsigned int  colour 
)

Draw Filled Ellipse or Circle in the pixel buffer.

Set v & h to same values to produce a circle.

Parameters:
xcX-Centre position.
ycY-Centre position.
vVertical radius.
hHorizontal radius.
colourColour to set pixel to. White or Black.

Definition at line 404 of file SharpLCD.cpp.

void fillrect ( int  x0,
int  y0,
int  w,
int  h,
int  colour 
)

Draw filled rectangle in the pixel buffer.

Parameters:
x0X-Start position.
y0Y-Start position.
wWidth.
hHeight.
colourColour to fill rectangle to. White or Black.

Definition at line 336 of file SharpLCD.cpp.

void hline ( int  x0,
int  x1,
int  y,
int  colour 
)

Draw a horizontal line one pixel wide in the pixel buffer.

Parameters:
x0X-Start position.
x1X-End position.
yY-position.
colourColour to set pixel to. White or Black.

Definition at line 528 of file SharpLCD.cpp.

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

Draw a Line in the pixel buffer.

Parameters:
x0X-Start position.
y0Y-Start position.
x1X-End position.
y1Y-End position.
colourColour to fill rectangle to. White or Black.

Definition at line 465 of file SharpLCD.cpp.

void locate ( int  column,
int  row 
)

Sets position of the next character or string print.

External font, set pixel x(column),y(row) position. internal(default) font, set character column and row position

Definition at line 233 of file SharpLCD.cpp.

void pixel ( int  x,
int  y,
int  colour 
)

Set a pixel in the pixel buffer.

Parameters:
xX-Position.
yY-Position.
colourColour to set pixel to. White or Black.

Definition at line 193 of file SharpLCD.cpp.

void printf ( const char *  format,
  ... 
)

printf (from Stream).

Full printf funtionality only available with internal(default) font. CR and LF have no effect with external fonts.

Definition at line 244 of file SharpLCD.cpp.

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

Draw rectangle one pixel wide (wire frame) in the pixel buffer.

Parameters:
x0X-Start position.
y0Y-Start position.
x1X-End position.
y1Y-End position.
colourColour to set pixel to. White or Black.

Definition at line 324 of file SharpLCD.cpp.

int rows (  )

return number if rows on TextDisplay

Returns:
number of rows

Definition at line 569 of file SharpLCD.cpp.

void set_font ( const unsigned char *  f )

Sets external font usage, eg.

dispaly.set_font(Arial12x12); This uses pixel positioning. display.set_font(NULL); returns to internal default font. void set_font(const unsigned char * f);

Definition at line 227 of file SharpLCD.cpp.

void showBMP ( const uint8_t *  bitmap,
const uint32_t  bmpWidth,
const uint32_t  bmpHeight,
const uint32_t  startX,
const uint32_t  startY 
)

Move bitmap into pixel buffer.

Parameters:
bitmappointer to uint8 array containing horizontal pixel data
bmpWidthwidth of the bitmap in pixels (must be byte multiple, eg 8,16,32,...)
bmpHeightheight of the bitmap in pixels (must be byte multiple, eg 8,16,32,...)
startXstarting position to apply bitmap in horizontal direction (0 = leftmost) (pixel resolution)
startYstarting position to apply bitmap in vertical direction (0 = topmost) (pixel resolution)

Definition at line 581 of file SharpLCD.cpp.

void toggle (  )

Toggles the EXTCOM connection to the display if used.

Call this function at 55 ~ 65 Hz to keep the display from losing contrast.

Definition at line 132 of file SharpLCD.cpp.

void update (  )

Transfers pixel buffer to the display.

Definition at line 158 of file SharpLCD.cpp.

void vline ( int  x0,
int  y0,
int  y1,
int  colour 
)

Draw a Vertical line one pixel wide in the pixel buffer.

Parameters:
x0X-Position.
y0Y-Start position.
y1Y-End position.
colourColour to set pixel to. White or Black.

Definition at line 538 of file SharpLCD.cpp.

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