File content as of revision 0:2c37ad282618:

/* mbed Nokia LCD Library
 * Copyright (c) 2007-2010, sford
 */

#include "NokiaLCD.h"

#include "mbed.h"

#define NOKIALCD_ROWS 16
#define NOKIALCD_COLS 16
#define NOKIALCD_WIDTH 130
#define NOKIALCD_HEIGHT 130
#define NOKIALCD_FREQUENCY 20000000

NokiaLCD::NokiaLCD(PinName mosi, PinName sclk, PinName cs, PinName rst, LCDType type)
        : _spi(mosi, NC, sclk)
        , _rst(rst)
        , _cs(cs) {

    _type = type;

    _row = 0;
    _column = 0;
    _foreground = 0x00FFFFFF;
    _background = 0x00000000;

    reset();
}

void NokiaLCD::reset() {

    // setup the SPI interface and bring display out of reset
    _cs = 1;
    _rst = 0;
    _spi.format(9);
    _spi.frequency(NOKIALCD_FREQUENCY);
    wait_ms(1);
    _rst = 1;
    wait_ms(1);

    _cs = 0;

    switch (_type) {
        case LCD6100:
            command(0xCA); // display control
            data(0);
            data(32);
            data(0);
            command(0xBB);
            data(1);
            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(0);
            data(1);
            data(4);
            command(0xAF);  // turn on the display
            break;
            
        case LCD6610:
            command(0xCA);    // display control
            data(0);
            data(31);
            data(0);
            command(0xBB);
            data(1);
            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(0);
            data(0);
            data(2);
            command(0xAF);  // turn on the display
            break;
            
        case PCF8833:
            command(0x11);  // sleep out
            command(0x3A);  // column mode
            data(0x05);
            command(0x36);  // madctl
            data(0x60);     // vertical RAM, flip x
            command(0x25);  // setcon
            data(0x30);// contrast 0x30
            wait_ms(2);
            command(0x29);//DISPON
            command(0x03);//BSTRON
            break;
    }

    _cs = 1;

    cls();
}

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

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

void NokiaLCD::_window(int x, int y, int width, int height) {
    int x1 = x + 2;
    int y1 = y + 0;
    int x2 = x1 + width - 1;
    int y2 = y1 + height - 1;

    switch (_type) {
        case LCD6100:
        case LCD6610:
            command(0x15); // column
            data(x1);
            data(x2);
            command(0x75); // row
            data(y1);
            data(y2);
            command(0x5C); // start write to ram
            break;
        case PCF8833:
            command(0x2A);  // column
            data(x1);
            data(x2);
            command(0x2B); // row
            data(y1);
            data(y2);
            command(0x2C); // start write to ram
            break;
    }
}

void NokiaLCD::_putp(int colour) {
    int gr = ((colour >> 20) & 0x0F)     //MSB 4bit(red)
             | ((colour >> 8 ) & 0xF0);  //Middle 4bit (green)
    int nb = ((colour >> 4 ) & 0x0F);    //LSB 4bit (blue)
    data(nb);
    data(gr);
}

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 NokiaLCD::locate(int column, int row) {
    _column = column;
    _row = row;
}

void NokiaLCD::newline() {
    _column = 0;
    _row++;
    if (_row >= _rows) {
        _row = 0;
    }
}

int NokiaLCD::_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 >= NOKIALCD_COLS) {
        _row++;
        _column = 0;
    }

    if (_row >= NOKIALCD_ROWS) {
        _row = 0;
    }

    return value;
}

void NokiaLCD::cls() {
    fill(0, 0, NOKIALCD_WIDTH, NOKIALCD_HEIGHT, _background);
    _row = 0;
    _column = 0;
}


void NokiaLCD::window(int x, int y, int width, int height) {
    _cs = 0;
    _window(x, y, width, height);
    _cs = 1;
}

void NokiaLCD::putp(int colour) {
    _cs = 0;
    _putp(colour);
    _cs = 1;
}

void NokiaLCD::pixel(int x, int y, int colour) {
    _cs = 0;
    _window(x, y, 1, 1);
    _putp(colour);
    _cs = 1;
}

void NokiaLCD::fill(int x, int y, int width, int height, int colour) {
    _cs = 0;
    _window(x, y, width, height);
    switch (_type) {
        case LCD6100:
        case PCF8833:
            for (int i=0; i<width*height; i++) {
                _putp(colour);
            }
            break;
        case LCD6610:
            for (int i=0; i<width*height/2; i++) {
                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;
                data(d1); 
                data(d2);   
                data(d3);
            }
            break;
    }
    _window(0, 0, NOKIALCD_WIDTH, NOKIALCD_HEIGHT);
    _cs = 1;
}

void NokiaLCD::blit(int x, int y, int width, int height, const int* colour) {
    _cs = 0;
    _window(x, y, width, height);

    switch (_type) {
        case LCD6100:
        case PCF8833:
            for (int i=0; i<width*height; i++) {
                 _putp(colour[i]);
             }
             break;
        case LCD6610:
            for (int i=0; i<width*height/2; i++) {
                int r41 = (colour[i*2] >> (16 + 4)) & 0xF;
                int g41 = (colour[i*2] >> (8 + 4)) & 0xF;
                int b41 = (colour[i*2] >> (0 + 4)) & 0xF;
           
                int r42 = (colour[i*2+1] >> (16 + 4)) & 0xF;
                int g42 = (colour[i*2+1] >> (8 + 4)) & 0xF;
                int b42 = (colour[i*2+1] >> (0 + 4)) & 0xF;   
                int d1 = (r41 << 4) | g41;
                int d2 = (b41 << 4) | r42;
                int d3 = (g42 << 4) | b42;               
                   data(d1); 
                data(d2); 
                data(d3); 
            }
            break;
     }            
    _window(0, 0, NOKIALCD_WIDTH, NOKIALCD_HEIGHT);
    _cs = 1;
}

void NokiaLCD::bitblit(int x, int y, int width, int height, const char* bitstream) {
    _cs = 0;
    _window(x, y, width, height);

    switch (_type) {
        case LCD6100:
        case PCF8833:
            for (int i=0; i<height*width; i++) {
                int byte = i / 8;
                int bit = i % 8;
                int colour = ((bitstream[byte] << bit) & 0x80) ? _foreground : _background;
                _putp(colour);
            }
            break;
        case LCD6610:
            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); 
            }
            break;
     }
    _window(0, 0, _width, _height);
    _cs = 1;
}

void NokiaLCD::foreground(int c) {
    _foreground = c;
}

void NokiaLCD::background(int c) {
    _background = c;
}

int NokiaLCD::width() {
    return NOKIALCD_WIDTH;
}

int NokiaLCD::height() {
    return NOKIALCD_HEIGHT;
}

int NokiaLCD::columns() {
    return NOKIALCD_COLS;
}

int NokiaLCD::rows() {
    return NOKIALCD_ROWS;
}