MobileLCD.cpp

00001 /* mbed Library - Nokia LCD Labelled "X3"
00002 * This is using the Philips PCF8833 controller
00003  * Copyright (c) 2009 P.R.Green
00004  */
00005 
00006 #include "MobileLCD.h"
00007 
00008 #include "mbed.h"
00009 
00010 using namespace mbed;
00011 
00012 MobileLCD::MobileLCD(PinName mosi, PinName miso, PinName clk, PinName cs, PinName rst)
00013         : _spi(mosi, miso, clk)
00014         , _rst(rst)
00015         , _cs(cs) {
00016     _row = 0;
00017     _column = 0;
00018     _rows = 16;
00019     _columns = 16;
00020     _width = 130;
00021     _height = 130;
00022     foreground(0xFFFF);
00023     background(0x0000);
00024     reset();
00025 }
00026 
00027 void MobileLCD::reset() {
00028     long i;
00029     _cs = 1;
00030     _rst = 0;
00031     _spi.format(9);
00032     _spi.frequency(5000000);
00033     wait(0.020);
00034     _rst = 1;
00035     wait(0.020);
00036     _select();
00037     command(0x11);//SLEEPOUT
00038     command(0x3A);//COLMOD
00039     data(0x05);//0x03 = 16bits-per-pixel 5:6:5 mode
00040     command(0x36);//MADCTL
00041     data(0x60);// 0x60 = mirror x, vertical RAM write
00042     command(0x25);//SETCON
00043     data(0x30);// contrast 0x30
00044     wait(0.002);
00045     command(0x29);//DISPON
00046     command(0x03);//BSTRON
00047 
00048     command(0x2B);//Row Address Set
00049     data(0);
00050     data(131);
00051 
00052     command(0x2A);//Column Address Set
00053     data(0);
00054     data(131);
00055 
00056     command(0x2C);//RAMWR
00057     //Clear RAM to black
00058     for (i=0; i < (132 * 132); i++) {
00059         data(0);
00060         data(0);
00061     }
00062     _deselect();
00063 }
00064 
00065 void MobileLCD::command(int value) {
00066     _spi.write(value & 0xFF);
00067 }
00068 
00069 void MobileLCD::data(int value) {
00070     _spi.write(value | 0x100);
00071 }
00072 
00073 void MobileLCD::_select() {
00074     _spi.format(9);
00075     _spi.frequency(5000000);
00076     _cs = 0;
00077 }
00078 
00079 void MobileLCD::_deselect() {
00080     _cs = 1;
00081 }
00082 
00083 void MobileLCD::_window(int x, int y, int width, int height) {
00084     int x1, x2, y1, y2;
00085     switch (0) { //_rotation) {
00086         default:
00087         case 0:
00088             x1 = x + 1;
00089             y1 = y + 1;
00090             x2 = x1 + width - 1;
00091             y2 = y1 + height -1 ;
00092             break;
00093         case 1:
00094             x1 = y + 1;
00095             y1 = x + 1;
00096             x2 = x1 + height - 1;
00097             y2 = y1 + width - 1;
00098             break;
00099         case 2:
00100             x1 = x + 1;
00101             y1 = y + 3;
00102             x2 = x1 + width - 1;
00103             y2 = y1 + height - 1;
00104             break;
00105         case 3:
00106             x1 = y + 3;
00107             y1 = x + 3;
00108             x2 = x1 + height - 1;
00109             y2 = y1 + width - 1;
00110             break;
00111     }
00112     command(0x2A); //CASET column
00113     data(x1);
00114     data(x2);
00115     command(0x2B); //PASET page
00116     data(y1);
00117     data(y2);
00118     command(0x2C); //RAMWR start write to ram
00119 }
00120 
00121 void MobileLCD::_putp(int colour) {
00122 
00123     data((colour >> 8) & 0xFF);
00124     data(colour & 0xFF);
00125 
00126 }
00127 /*
00128 void MobileLCD::orientation() {
00129     int m;
00130     switch (0) { //_rotation) {
00131         case 0:
00132         default:
00133             m = 3;
00134             break;
00135         case 2:
00136             m = 0;
00137             break;
00138         case 1:
00139             m = 5;
00140             break;
00141         case 3:
00142             m = 6;
00143             break;
00144     }
00145 
00146     command(0xBC); // data control
00147     data(m); // scan dirs
00148     data(1); // RGB
00149     data(4); // grayscale
00150 }
00151 */
00152 
00153 const unsigned char FONT8x8[97][8] = {
00154     0x08,0x08,0x08,0x00,0x00,0x00,0x00,0x00, // columns, rows, num_bytes_per_char
00155     0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, // space 0x20
00156     0x30,0x78,0x78,0x30,0x30,0x00,0x30,0x00, // !
00157     0x6C,0x6C,0x6C,0x00,0x00,0x00,0x00,0x00, // "
00158     0x6C,0x6C,0xFE,0x6C,0xFE,0x6C,0x6C,0x00, // #
00159     0x18,0x3E,0x60,0x3C,0x06,0x7C,0x18,0x00, // $
00160     0x00,0x63,0x66,0x0C,0x18,0x33,0x63,0x00, // %
00161     0x1C,0x36,0x1C,0x3B,0x6E,0x66,0x3B,0x00, // &
00162     0x30,0x30,0x60,0x00,0x00,0x00,0x00,0x00, // '
00163     0x0C,0x18,0x30,0x30,0x30,0x18,0x0C,0x00, // (
00164     0x30,0x18,0x0C,0x0C,0x0C,0x18,0x30,0x00, // )
00165     0x00,0x66,0x3C,0xFF,0x3C,0x66,0x00,0x00, // *
00166     0x00,0x30,0x30,0xFC,0x30,0x30,0x00,0x00, // +
00167     0x00,0x00,0x00,0x00,0x00,0x18,0x18,0x30, // ,
00168     0x00,0x00,0x00,0x7E,0x00,0x00,0x00,0x00, // -
00169     0x00,0x00,0x00,0x00,0x00,0x18,0x18,0x00, // .
00170     0x03,0x06,0x0C,0x18,0x30,0x60,0x40,0x00, // / (forward slash)
00171     0x3E,0x63,0x63,0x6B,0x63,0x63,0x3E,0x00, // 0 0x30
00172     0x18,0x38,0x58,0x18,0x18,0x18,0x7E,0x00, // 1
00173     0x3C,0x66,0x06,0x1C,0x30,0x66,0x7E,0x00, // 2
00174     0x3C,0x66,0x06,0x1C,0x06,0x66,0x3C,0x00, // 3
00175     0x0E,0x1E,0x36,0x66,0x7F,0x06,0x0F,0x00, // 4
00176     0x7E,0x60,0x7C,0x06,0x06,0x66,0x3C,0x00, // 5
00177     0x1C,0x30,0x60,0x7C,0x66,0x66,0x3C,0x00, // 6
00178     0x7E,0x66,0x06,0x0C,0x18,0x18,0x18,0x00, // 7
00179     0x3C,0x66,0x66,0x3C,0x66,0x66,0x3C,0x00, // 8
00180     0x3C,0x66,0x66,0x3E,0x06,0x0C,0x38,0x00, // 9
00181     0x00,0x18,0x18,0x00,0x00,0x18,0x18,0x00, // :
00182     0x00,0x18,0x18,0x00,0x00,0x18,0x18,0x30, // ;
00183     0x0C,0x18,0x30,0x60,0x30,0x18,0x0C,0x00, // <
00184     0x00,0x00,0x7E,0x00,0x00,0x7E,0x00,0x00, // =
00185     0x30,0x18,0x0C,0x06,0x0C,0x18,0x30,0x00, // >
00186     0x3C,0x66,0x06,0x0C,0x18,0x00,0x18,0x00, // ?
00187     0x3E,0x63,0x6F,0x69,0x6F,0x60,0x3E,0x00, // @ 0x40
00188     0x18,0x3C,0x66,0x66,0x7E,0x66,0x66,0x00, // A
00189     0x7E,0x33,0x33,0x3E,0x33,0x33,0x7E,0x00, // B
00190     0x1E,0x33,0x60,0x60,0x60,0x33,0x1E,0x00, // C
00191     0x7C,0x36,0x33,0x33,0x33,0x36,0x7C,0x00, // D
00192     0x7F,0x31,0x34,0x3C,0x34,0x31,0x7F,0x00, // E
00193     0x7F,0x31,0x34,0x3C,0x34,0x30,0x78,0x00, // F
00194     0x1E,0x33,0x60,0x60,0x67,0x33,0x1F,0x00, // G
00195     0x66,0x66,0x66,0x7E,0x66,0x66,0x66,0x00, // H
00196     0x3C,0x18,0x18,0x18,0x18,0x18,0x3C,0x00, // I
00197     0x0F,0x06,0x06,0x06,0x66,0x66,0x3C,0x00, // J
00198     0x73,0x33,0x36,0x3C,0x36,0x33,0x73,0x00, // K
00199     0x78,0x30,0x30,0x30,0x31,0x33,0x7F,0x00, // L
00200     0x63,0x77,0x7F,0x7F,0x6B,0x63,0x63,0x00, // M
00201     0x63,0x73,0x7B,0x6F,0x67,0x63,0x63,0x00, // N
00202     0x3E,0x63,0x63,0x63,0x63,0x63,0x3E,0x00, // O
00203     0x7E,0x33,0x33,0x3E,0x30,0x30,0x78,0x00, // P 0x50
00204     0x3C,0x66,0x66,0x66,0x6E,0x3C,0x0E,0x00, // Q
00205     0x7E,0x33,0x33,0x3E,0x36,0x33,0x73,0x00, // R
00206     0x3C,0x66,0x30,0x18,0x0C,0x66,0x3C,0x00, // S
00207     0x7E,0x5A,0x18,0x18,0x18,0x18,0x3C,0x00, // T
00208     0x66,0x66,0x66,0x66,0x66,0x66,0x7E,0x00, // U
00209     0x66,0x66,0x66,0x66,0x66,0x3C,0x18,0x00, // V
00210     0x63,0x63,0x63,0x6B,0x7F,0x77,0x63,0x00, // W
00211     0x63,0x63,0x36,0x1C,0x1C,0x36,0x63,0x00, // X
00212     0x66,0x66,0x66,0x3C,0x18,0x18,0x3C,0x00, // Y
00213     0x7F,0x63,0x46,0x0C,0x19,0x33,0x7F,0x00, // Z
00214     0x3C,0x30,0x30,0x30,0x30,0x30,0x3C,0x00, // [
00215     0x60,0x30,0x18,0x0C,0x06,0x03,0x01,0x00, // \ (back slash)
00216     0x3C,0x0C,0x0C,0x0C,0x0C,0x0C,0x3C,0x00, // ]
00217     0x08,0x1C,0x36,0x63,0x00,0x00,0x00,0x00, // ^
00218     0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xFF, // _
00219     0x18,0x18,0x0C,0x00,0x00,0x00,0x00,0x00, // ` 0x60
00220     0x00,0x00,0x3C,0x06,0x3E,0x66,0x3B,0x00, // a
00221     0x70,0x30,0x3E,0x33,0x33,0x33,0x6E,0x00, // b
00222     0x00,0x00,0x3C,0x66,0x60,0x66,0x3C,0x00, // c
00223     0x0E,0x06,0x3E,0x66,0x66,0x66,0x3B,0x00, // d
00224     0x00,0x00,0x3C,0x66,0x7E,0x60,0x3C,0x00, // e
00225     0x1C,0x36,0x30,0x78,0x30,0x30,0x78,0x00, // f
00226     0x00,0x00,0x3B,0x66,0x66,0x3E,0x06,0x7C, // g
00227     0x70,0x30,0x36,0x3B,0x33,0x33,0x73,0x00, // h
00228     0x18,0x00,0x38,0x18,0x18,0x18,0x3C,0x00, // i
00229     0x06,0x00,0x06,0x06,0x06,0x66,0x66,0x3C, // j
00230     0x70,0x30,0x33,0x36,0x3C,0x36,0x73,0x00, // k
00231     0x38,0x18,0x18,0x18,0x18,0x18,0x3C,0x00, // l
00232     0x00,0x00,0x66,0x7F,0x7F,0x6B,0x63,0x00, // m
00233     0x00,0x00,0x7C,0x66,0x66,0x66,0x66,0x00, // n
00234     0x00,0x00,0x3C,0x66,0x66,0x66,0x3C,0x00, // o
00235     0x00,0x00,0x6E,0x33,0x33,0x3E,0x30,0x78, // p
00236     0x00,0x00,0x3B,0x66,0x66,0x3E,0x06,0x0F, // q
00237     0x00,0x00,0x6E,0x3B,0x33,0x30,0x78,0x00, // r
00238     0x00,0x00,0x3E,0x60,0x3C,0x06,0x7C,0x00, // s
00239     0x08,0x18,0x3E,0x18,0x18,0x1A,0x0C,0x00, // t
00240     0x00,0x00,0x66,0x66,0x66,0x66,0x3B,0x00, // u
00241     0x00,0x00,0x66,0x66,0x66,0x3C,0x18,0x00, // v
00242     0x00,0x00,0x63,0x6B,0x7F,0x7F,0x36,0x00, // w
00243     0x00,0x00,0x63,0x36,0x1C,0x36,0x63,0x00, // x
00244     0x00,0x00,0x66,0x66,0x66,0x3E,0x06,0x7C, // y
00245     0x00,0x00,0x7E,0x4C,0x18,0x32,0x7E,0x00, // z
00246     0x0E,0x18,0x18,0x70,0x18,0x18,0x0E,0x00, // {
00247     0x0C,0x0C,0x0C,0x00,0x0C,0x0C,0x0C,0x00, // |
00248     0x70,0x18,0x18,0x0E,0x18,0x18,0x70,0x00, // }
00249     0x3B,0x6E,0x00,0x00,0x00,0x00,0x00,0x00, // ~
00250     0x1C,0x36,0x36,0x1C,0x00,0x00,0x00,0x00
00251 }; // DEL
00252 
00253 void MobileLCD::locate(int column, int row) {
00254     _row = row;
00255     _column = column;
00256 }
00257 
00258 void MobileLCD::newline() {
00259     _column = 0;
00260     _row++;
00261     if (_row >= _rows) {
00262         _row = 0;
00263     }
00264 }
00265 
00266 int MobileLCD::_putc(int value) {
00267     int x = _column * 8;  // FIXME: Char sizes
00268     int y = _row * 8;
00269     bitblit(x , y , 8, 8, (char*)&(FONT8x8[value - 0x1F][0]));
00270 
00271     _column++;
00272 
00273     if (_column >= _columns) {
00274         _row++;
00275         _column = 0;
00276     }
00277 
00278     if (_row >= _rows) {
00279         _row = 0;
00280     }
00281 
00282     return value;
00283 }
00284 
00285 void MobileLCD::cls() {
00286     fill(0, 0, _width, _height, _background);
00287     _row = 0;
00288     _column = 0;
00289 }
00290 
00291 int MobileLCD::width() {
00292     return _width;
00293 }
00294 
00295 int MobileLCD::height() {
00296     return _height;
00297 }
00298 
00299 int MobileLCD::columns() {
00300     return _columns;
00301 }
00302 
00303 int MobileLCD::rows() {
00304     return _rows;
00305 }
00306 
00307 void MobileLCD::window(int x, int y, int width, int height) {
00308     _select();
00309     _window(x, y, width, height);
00310     _deselect();
00311 }
00312 
00313 void MobileLCD::putp(int colour) {
00314     _select();
00315     _putp(colour);
00316     _deselect();
00317 }
00318 
00319 void MobileLCD::pixel(int x, int y, int colour) {
00320     _select();
00321     _window(x, y, 1, 1);
00322     _putp(colour);
00323     _deselect();
00324 }
00325 
00326 void MobileLCD::fill(int x, int y, int width, int height, int colour) {
00327     _select();
00328     _window(x, y, width, height);
00329     for (int i=0; i<width*height; i++) {
00330         _putp(colour);
00331     }
00332     _window(0, 0, _width, _height);
00333     _deselect();
00334 }
00335 
00336 
00337 void MobileLCD::blit(int x, int y, int width, int height, const int* colour) {
00338     _select();
00339     _window(x, y, width, height);
00340     for (int i=0; i<width*height; i++) {
00341         _putp(colour[i]);
00342     }
00343     _window(0, 0, _width, _height);
00344     _deselect();
00345 }
00346 
00347 void MobileLCD::foreground(int v) {
00348     _foreground = v;
00349 }
00350 
00351 void MobileLCD::background(int v) {
00352     _background = v;
00353 }
00354 
00355 void MobileLCD::bitblit(int x, int y, int width, int height, const char* bitstream) {
00356     _select();
00357     _window(x, y, width, height);
00358 
00359     for (int i=0; i<height*width; i++) {
00360         unsigned char byte = i / 8;
00361         unsigned char bit = i % 8;
00362         int colour = (((bitstream[byte] << bit) & 0x80) ? _foreground : _background);
00363         _putp(colour);
00364     }
00365     _window(0, 0, _width, _height);
00366     _deselect();
00367 }
00368 
00369