File content as of revision 0:39daa30e0eb3:

/* mbed Library - MobileLCD
 * Copyright (c) 2007, sford
 */
 
#include "MobileLCD.h"

#include "mbed.h"

using namespace mbed;

const unsigned char FONT8x8[97][8] = {
0x08,0x08,0x08,0x00,0x00,0x00,0x00,0x00, // columns, rows, num_bytes_per_char
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, // space 0x20
0x30,0x78,0x78,0x30,0x30,0x00,0x30,0x00, // !
0x6C,0x6C,0x6C,0x00,0x00,0x00,0x00,0x00, // "
0x6C,0x6C,0xFE,0x6C,0xFE,0x6C,0x6C,0x00, // #
0x18,0x3E,0x60,0x3C,0x06,0x7C,0x18,0x00, // $
0x00,0x63,0x66,0x0C,0x18,0x33,0x63,0x00, // %
0x1C,0x36,0x1C,0x3B,0x6E,0x66,0x3B,0x00, // &
0x30,0x30,0x60,0x00,0x00,0x00,0x00,0x00, // '
0x0C,0x18,0x30,0x30,0x30,0x18,0x0C,0x00, // (
0x30,0x18,0x0C,0x0C,0x0C,0x18,0x30,0x00, // )
0x00,0x66,0x3C,0xFF,0x3C,0x66,0x00,0x00, // *
0x00,0x30,0x30,0xFC,0x30,0x30,0x00,0x00, // +
0x00,0x00,0x00,0x00,0x00,0x18,0x18,0x30, // ,
0x00,0x00,0x00,0x7E,0x00,0x00,0x00,0x00, // -
0x00,0x00,0x00,0x00,0x00,0x18,0x18,0x00, // .
0x03,0x06,0x0C,0x18,0x30,0x60,0x40,0x00, // / (forward slash)
0x3E,0x63,0x63,0x6B,0x63,0x63,0x3E,0x00, // 0 0x30
0x18,0x38,0x58,0x18,0x18,0x18,0x7E,0x00, // 1
0x3C,0x66,0x06,0x1C,0x30,0x66,0x7E,0x00, // 2
0x3C,0x66,0x06,0x1C,0x06,0x66,0x3C,0x00, // 3
0x0E,0x1E,0x36,0x66,0x7F,0x06,0x0F,0x00, // 4
0x7E,0x60,0x7C,0x06,0x06,0x66,0x3C,0x00, // 5
0x1C,0x30,0x60,0x7C,0x66,0x66,0x3C,0x00, // 6
0x7E,0x66,0x06,0x0C,0x18,0x18,0x18,0x00, // 7
0x3C,0x66,0x66,0x3C,0x66,0x66,0x3C,0x00, // 8
0x3C,0x66,0x66,0x3E,0x06,0x0C,0x38,0x00, // 9
0x00,0x18,0x18,0x00,0x00,0x18,0x18,0x00, // :
0x00,0x18,0x18,0x00,0x00,0x18,0x18,0x30, // ;
0x0C,0x18,0x30,0x60,0x30,0x18,0x0C,0x00, // <
0x00,0x00,0x7E,0x00,0x00,0x7E,0x00,0x00, // =
0x30,0x18,0x0C,0x06,0x0C,0x18,0x30,0x00, // >
0x3C,0x66,0x06,0x0C,0x18,0x00,0x18,0x00, // ?
0x3E,0x63,0x6F,0x69,0x6F,0x60,0x3E,0x00, // @ 0x40
0x18,0x3C,0x66,0x66,0x7E,0x66,0x66,0x00, // A
0x7E,0x33,0x33,0x3E,0x33,0x33,0x7E,0x00, // B
0x1E,0x33,0x60,0x60,0x60,0x33,0x1E,0x00, // C
0x7C,0x36,0x33,0x33,0x33,0x36,0x7C,0x00, // D
0x7F,0x31,0x34,0x3C,0x34,0x31,0x7F,0x00, // E
0x7F,0x31,0x34,0x3C,0x34,0x30,0x78,0x00, // F
0x1E,0x33,0x60,0x60,0x67,0x33,0x1F,0x00, // G
0x66,0x66,0x66,0x7E,0x66,0x66,0x66,0x00, // H
0x3C,0x18,0x18,0x18,0x18,0x18,0x3C,0x00, // I
0x0F,0x06,0x06,0x06,0x66,0x66,0x3C,0x00, // J
0x73,0x33,0x36,0x3C,0x36,0x33,0x73,0x00, // K
0x78,0x30,0x30,0x30,0x31,0x33,0x7F,0x00, // L
0x63,0x77,0x7F,0x7F,0x6B,0x63,0x63,0x00, // M
0x63,0x73,0x7B,0x6F,0x67,0x63,0x63,0x00, // N
0x3E,0x63,0x63,0x63,0x63,0x63,0x3E,0x00, // O
0x7E,0x33,0x33,0x3E,0x30,0x30,0x78,0x00, // P 0x50
0x3C,0x66,0x66,0x66,0x6E,0x3C,0x0E,0x00, // Q
0x7E,0x33,0x33,0x3E,0x36,0x33,0x73,0x00, // R
0x3C,0x66,0x30,0x18,0x0C,0x66,0x3C,0x00, // S
0x7E,0x5A,0x18,0x18,0x18,0x18,0x3C,0x00, // T
0x66,0x66,0x66,0x66,0x66,0x66,0x7E,0x00, // U
0x66,0x66,0x66,0x66,0x66,0x3C,0x18,0x00, // V
0x63,0x63,0x63,0x6B,0x7F,0x77,0x63,0x00, // W
0x63,0x63,0x36,0x1C,0x1C,0x36,0x63,0x00, // X
0x66,0x66,0x66,0x3C,0x18,0x18,0x3C,0x00, // Y
0x7F,0x63,0x46,0x0C,0x19,0x33,0x7F,0x00, // Z
0x3C,0x30,0x30,0x30,0x30,0x30,0x3C,0x00, // [
0x60,0x30,0x18,0x0C,0x06,0x03,0x01,0x00, // \ (back slash)
0x3C,0x0C,0x0C,0x0C,0x0C,0x0C,0x3C,0x00, // ]
0x08,0x1C,0x36,0x63,0x00,0x00,0x00,0x00, // ^
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xFF, // _
0x18,0x18,0x0C,0x00,0x00,0x00,0x00,0x00, // ` 0x60
0x00,0x00,0x3C,0x06,0x3E,0x66,0x3B,0x00, // a
0x70,0x30,0x3E,0x33,0x33,0x33,0x6E,0x00, // b
0x00,0x00,0x3C,0x66,0x60,0x66,0x3C,0x00, // c
0x0E,0x06,0x3E,0x66,0x66,0x66,0x3B,0x00, // d
0x00,0x00,0x3C,0x66,0x7E,0x60,0x3C,0x00, // e
0x1C,0x36,0x30,0x78,0x30,0x30,0x78,0x00, // f
0x00,0x00,0x3B,0x66,0x66,0x3E,0x06,0x7C, // g
0x70,0x30,0x36,0x3B,0x33,0x33,0x73,0x00, // h
0x18,0x00,0x38,0x18,0x18,0x18,0x3C,0x00, // i
0x06,0x00,0x06,0x06,0x06,0x66,0x66,0x3C, // j
0x70,0x30,0x33,0x36,0x3C,0x36,0x73,0x00, // k
0x38,0x18,0x18,0x18,0x18,0x18,0x3C,0x00, // l
0x00,0x00,0x66,0x7F,0x7F,0x6B,0x63,0x00, // m
0x00,0x00,0x7C,0x66,0x66,0x66,0x66,0x00, // n
0x00,0x00,0x3C,0x66,0x66,0x66,0x3C,0x00, // o
0x00,0x00,0x6E,0x33,0x33,0x3E,0x30,0x78, // p
0x00,0x00,0x3B,0x66,0x66,0x3E,0x06,0x0F, // q
0x00,0x00,0x6E,0x3B,0x33,0x30,0x78,0x00, // r
0x00,0x00,0x3E,0x60,0x3C,0x06,0x7C,0x00, // s
0x08,0x18,0x3E,0x18,0x18,0x1A,0x0C,0x00, // t
0x00,0x00,0x66,0x66,0x66,0x66,0x3B,0x00, // u
0x00,0x00,0x66,0x66,0x66,0x3C,0x18,0x00, // v
0x00,0x00,0x63,0x6B,0x7F,0x7F,0x36,0x00, // w
0x00,0x00,0x63,0x36,0x1C,0x36,0x63,0x00, // x
0x00,0x00,0x66,0x66,0x66,0x3E,0x06,0x7C, // y
0x00,0x00,0x7E,0x4C,0x18,0x32,0x7E,0x00, // z
0x0E,0x18,0x18,0x70,0x18,0x18,0x0E,0x00, // {
0x0C,0x0C,0x0C,0x00,0x0C,0x0C,0x0C,0x00, // |
0x70,0x18,0x18,0x0E,0x18,0x18,0x70,0x00, // }
0x3B,0x6E,0x00,0x00,0x00,0x00,0x00,0x00, // ~
0x1C,0x36,0x36,0x1C,0x00,0x00,0x00,0x00}; // DEL

void MobileLCD::command(int value) {
    _spi.write(value & 0xFF);
}

void MobileLCD::data(int value) {
    _spi.write(value | 0x100);
}

void MobileLCD::_select() {
    _cs = 0;    
}
    
void MobileLCD::_deselect() {
    _cs = 1;
}

int MobileLCD::width() { 
    return _width; 
}

int MobileLCD::height() { 
    return _height; 
}

int MobileLCD::columns() { 
    return _columns; 
}

int MobileLCD::rows() { 
    return _rows; 
}

void MobileLCD::foreground(int v) {
    _foreground = v;
}

void MobileLCD::background(int v) {
    _background = v;
}

void MobileLCD::locate(int column, int row) {
    _row = row;
    _column = column;
}
    
void MobileLCD::newline() {
    _column = 0;
    _row++;
    if(_row >= _rows) {
        _row = 0;
    }
}

/*************************************************************************/
    
MobileLCD::MobileLCD(PinName mosi, PinName miso, PinName clk, PinName cs, PinName rst) 
    : _spi(mosi, miso, clk)
    , _rst(rst)
    , _cs(cs) {

    _row = 0;
    _column = 0;
    _rows = 16;
    _columns = 16;
    _width = 130;
    _height = 130;
    foreground(0xFFFFFF);
    background(0x000000);
    reset();
}
    
void MobileLCD::reset() {

    _cs = 1;
    _rst = 0;
    _spi.format(9);
    _spi.frequency(5000000);
    
    wait_ms(1);

    _rst = 1;

    wait_ms(1);

    _select();

    command(0xCA); // display control  
    data(0x0);
      data(31);
     data(0x0);
     
    command(0xBB);  // scan
    data(0x1);
    
      command(0xD1); // oscillator on
      command(0x94); // sleep out
    command(0x20); // power control
      data(0x0F); 

      command(0xA7); // invert display

    command(0x81); // Voltage control
       data(39);      // contrast setting: 0..63
       data(3);       // resistance ratio

    wait_ms(1);

    command(0xBC); // data control
    data(0x0); // scan dirs
      data(0x0); // RGB
      data(0x2); // grayscale

    command(0xAF);  // turn on the display
              
    _deselect();    
    
    cls();
}
                 
void MobileLCD::_window(int x, int y, int width, int height) {
    int x1, x2, y1, y2;
    x1 = x + 0;
    y1 = y + 2;
    x2 = x1 + width - 1;
    y2 = y1 + height - 1;        
    command(0x15); // column
    data(x1);       
    data(x2); 
    command(0x75); // page
      data(y1);            
      data(y2);
       command(0x5C); // start write to ram
}

void MobileLCD::fill(int x, int y, int width, int height, int colour) {
    _select();
    _window(x, y, width, height);

    int r4 = (colour >> (16 + 4)) & 0xF;
    int g4 = (colour >> (8 + 4)) & 0xF;
    int b4 = (colour >> (0 + 4)) & 0xF;
    
    int d1 = (r4 << 4) | g4;
    int d2 = (b4 << 4) | r4;
    int d3 = (g4 << 4) | b4;
    
    for(int i=0; i<(width*height+1)/2; i++) {
        data(d1); 
        data(d2); 
        data(d3); 
    }
     _deselect();        
} 

void MobileLCD::bitblit(int x, int y, int width, int height, const char* bitstream) {
    _select();
    _window(x, y, width, height);
    for(int i=0; i<height*width/2; i++) {
    int byte1 = (i*2) / 8;
    int bit1 = (i*2) % 8;    
    int colour1 = ((bitstream[byte1] << bit1) & 0x80) ? _foreground : _background;
    int byte2 = (i*2+1) / 8;
    int bit2 = (i*2+1) % 8;    
    int colour2 = ((bitstream[byte2] << bit2) & 0x80) ? _foreground : _background;

    int r41 = (colour1 >> (16 + 4)) & 0xF;
    int g41 = (colour1 >> (8 + 4)) & 0xF;
    int b41 = (colour1 >> (0 + 4)) & 0xF;
    
    int r42 = (colour2 >> (16 + 4)) & 0xF;
    int g42 = (colour2 >> (8 + 4)) & 0xF;
    int b42 = (colour2 >> (0 + 4)) & 0xF;    
    int d1 = (r41 << 4) | g41;
    int d2 = (b41 << 4) | r42;
    int d3 = (g42 << 4) | b42;                
        data(d1); 
        data(d2); 
        data(d3); 
    }
    _deselect();
}

void MobileLCD::cls() {
    fill(0, 0, 130, 130, _background);
    _row = 0;
    _column = 0;
}    
        
int MobileLCD::_putc(int value) { 
    int x = _column * 8;  // FIXME: Char sizes
    int y = _row * 8;
    bitblit(x + 1, y + 1, 8, 8, (char*)&(FONT8x8[value - 0x1F][0]));
    
    _column++;

    if(_column >= _columns) {
        _row++;
        _column = 0;
    }
        
    if(_row >= _rows) {
        _row = 0;
    }            

    return value;
}
     
void MobileLCD::pixel(int x, int y, int colour) {
    fill(x, y, 1, 1, colour);
}