MobileLCD.cpp

00001 /* mbed Library - MobileLCD
00002  * Copyright (c) 2007, sford
00003  */
00004  
00005 #include "MobileLCD.h"
00006 
00007 #include "mbed.h"
00008 
00009 using namespace mbed;
00010 
00011 MobileLCD::MobileLCD(int mosi, int miso, int clk, int cs, int rst) 
00012     : _spi(mosi, miso, clk)
00013     , _rst(rst)
00014     , _cs(cs) {
00015 
00016     _row = 0;
00017     _column = 0;
00018     _rows = 16;
00019     _columns = 16;
00020     _width = 130;
00021     _height = 130;
00022     foreground(0x00FFFFFF);
00023     background(0x00000000);
00024     reset();
00025 }
00026     
00027 void MobileLCD::reset() {
00028     _cs = 1;
00029     _rst = 0;
00030     _spi.format(9);
00031     _spi.frequency(5000000);
00032     wait(0.001);
00033     _rst = 1;
00034     wait(0.001);
00035     _select();
00036     command(0xCA); // display control  
00037     data(0);
00038     data(32);
00039     data(0);
00040     command(0xBB);  
00041     data(1);
00042     
00043     command(0xD1); // oscillator on
00044     command(0x94); // sleep out
00045     command(0x20); // power control
00046     data(0x0F); 
00047 
00048     command(0xA7); // invert display
00049 
00050     command(0x81); // Voltage control
00051     data(39);      // contrast setting: 0..63
00052     data(3);       // resistance ratio
00053     wait(0.001);
00054         
00055     orientation();
00056         
00057     // clear screen, including surrounding border
00058     _window(0, 0, 130, 130);
00059     for(int i=0; i<130*130; i++) {
00060         _putp(0x000000);
00061     }
00062     command(0xAF);  // turn on the display
00063     
00064     _deselect();
00065 
00066 }
00067     
00068 void MobileLCD::command(int value) {
00069     _spi.write(value & 0xFF);
00070 }
00071 
00072 void MobileLCD::data(int value) {
00073     _spi.write(value | 0x100);
00074 }
00075 
00076 void MobileLCD::_select() {
00077     _cs = 0;    
00078 }
00079     
00080 void MobileLCD::_deselect() {
00081     _cs = 1;
00082 }
00083             
00084 void MobileLCD::_window(int x, int y, int width, int height) {
00085     int x1, x2, y1, y2;
00086     switch(0) { //_rotation) {
00087         default:
00088         case 0:
00089             x1 = x + 2;
00090             y1 = y + 0;
00091             x2 = x1 + width - 1;
00092             y2 = y1 + height - 1;       
00093             break;
00094         case 1:
00095             x1 = y + 1;
00096             y1 = x + 1;
00097             x2 = x1 + height - 1;
00098             y2 = y1 + width - 1;                    
00099         break;
00100         case 2:
00101             x1 = x + 1;
00102             y1 = y + 3;
00103             x2 = x1 + width - 1;
00104             y2 = y1 + height - 1;       
00105             break;
00106         case 3:
00107             x1 = y + 3;
00108             y1 = x + 3;
00109             x2 = x1 + height - 1;
00110             y2 = y1 + width - 1;                    
00111         break;
00112     }
00113     command(0x15); // column
00114     data(x1);       
00115     data(x2); 
00116     command(0x75); // page
00117     data(y1);            
00118     data(y2);
00119     command(0x5C); // start write to ram
00120 }   
00121     
00122 void MobileLCD::_putp(int colour) {
00123     int gr = ((colour >> 20) & 0x0F)
00124            | ((colour >> 8 ) & 0xF0);
00125     int nb = ((colour >> 4 ) & 0x0F);
00126     data(nb); 
00127     data(gr); 
00128 }
00129 
00130 void MobileLCD::orientation() {
00131     int m;
00132     switch(0) { //_rotation) {
00133         case 0:
00134         default:
00135             m = 3;
00136             break;
00137         case 2:
00138             m = 0;
00139             break;
00140         case 1:
00141             m = 5;
00142             break;
00143         case 3: 
00144             m = 6;
00145             break;
00146     }
00147 
00148     command(0xBC); // data control
00149     data(m); // scan dirs 
00150     data(1); // RGB
00151     data(4); // grayscale           
00152 }
00153     
00154     
00155 const unsigned char FONT8x8[97][8] = {
00156 0x08,0x08,0x08,0x00,0x00,0x00,0x00,0x00, // columns, rows, num_bytes_per_char
00157 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, // space 0x20
00158 0x30,0x78,0x78,0x30,0x30,0x00,0x30,0x00, // !
00159 0x6C,0x6C,0x6C,0x00,0x00,0x00,0x00,0x00, // "
00160 0x6C,0x6C,0xFE,0x6C,0xFE,0x6C,0x6C,0x00, // #
00161 0x18,0x3E,0x60,0x3C,0x06,0x7C,0x18,0x00, // $
00162 0x00,0x63,0x66,0x0C,0x18,0x33,0x63,0x00, // %
00163 0x1C,0x36,0x1C,0x3B,0x6E,0x66,0x3B,0x00, // &
00164 0x30,0x30,0x60,0x00,0x00,0x00,0x00,0x00, // '
00165 0x0C,0x18,0x30,0x30,0x30,0x18,0x0C,0x00, // (
00166 0x30,0x18,0x0C,0x0C,0x0C,0x18,0x30,0x00, // )
00167 0x00,0x66,0x3C,0xFF,0x3C,0x66,0x00,0x00, // *
00168 0x00,0x30,0x30,0xFC,0x30,0x30,0x00,0x00, // +
00169 0x00,0x00,0x00,0x00,0x00,0x18,0x18,0x30, // ,
00170 0x00,0x00,0x00,0x7E,0x00,0x00,0x00,0x00, // -
00171 0x00,0x00,0x00,0x00,0x00,0x18,0x18,0x00, // .
00172 0x03,0x06,0x0C,0x18,0x30,0x60,0x40,0x00, // / (forward slash)
00173 0x3E,0x63,0x63,0x6B,0x63,0x63,0x3E,0x00, // 0 0x30
00174 0x18,0x38,0x58,0x18,0x18,0x18,0x7E,0x00, // 1
00175 0x3C,0x66,0x06,0x1C,0x30,0x66,0x7E,0x00, // 2
00176 0x3C,0x66,0x06,0x1C,0x06,0x66,0x3C,0x00, // 3
00177 0x0E,0x1E,0x36,0x66,0x7F,0x06,0x0F,0x00, // 4
00178 0x7E,0x60,0x7C,0x06,0x06,0x66,0x3C,0x00, // 5
00179 0x1C,0x30,0x60,0x7C,0x66,0x66,0x3C,0x00, // 6
00180 0x7E,0x66,0x06,0x0C,0x18,0x18,0x18,0x00, // 7
00181 0x3C,0x66,0x66,0x3C,0x66,0x66,0x3C,0x00, // 8
00182 0x3C,0x66,0x66,0x3E,0x06,0x0C,0x38,0x00, // 9
00183 0x00,0x18,0x18,0x00,0x00,0x18,0x18,0x00, // :
00184 0x00,0x18,0x18,0x00,0x00,0x18,0x18,0x30, // ;
00185 0x0C,0x18,0x30,0x60,0x30,0x18,0x0C,0x00, // <
00186 0x00,0x00,0x7E,0x00,0x00,0x7E,0x00,0x00, // =
00187 0x30,0x18,0x0C,0x06,0x0C,0x18,0x30,0x00, // >
00188 0x3C,0x66,0x06,0x0C,0x18,0x00,0x18,0x00, // ?
00189 0x3E,0x63,0x6F,0x69,0x6F,0x60,0x3E,0x00, // @ 0x40
00190 0x18,0x3C,0x66,0x66,0x7E,0x66,0x66,0x00, // A
00191 0x7E,0x33,0x33,0x3E,0x33,0x33,0x7E,0x00, // B
00192 0x1E,0x33,0x60,0x60,0x60,0x33,0x1E,0x00, // C
00193 0x7C,0x36,0x33,0x33,0x33,0x36,0x7C,0x00, // D
00194 0x7F,0x31,0x34,0x3C,0x34,0x31,0x7F,0x00, // E
00195 0x7F,0x31,0x34,0x3C,0x34,0x30,0x78,0x00, // F
00196 0x1E,0x33,0x60,0x60,0x67,0x33,0x1F,0x00, // G
00197 0x66,0x66,0x66,0x7E,0x66,0x66,0x66,0x00, // H
00198 0x3C,0x18,0x18,0x18,0x18,0x18,0x3C,0x00, // I
00199 0x0F,0x06,0x06,0x06,0x66,0x66,0x3C,0x00, // J
00200 0x73,0x33,0x36,0x3C,0x36,0x33,0x73,0x00, // K
00201 0x78,0x30,0x30,0x30,0x31,0x33,0x7F,0x00, // L
00202 0x63,0x77,0x7F,0x7F,0x6B,0x63,0x63,0x00, // M
00203 0x63,0x73,0x7B,0x6F,0x67,0x63,0x63,0x00, // N
00204 0x3E,0x63,0x63,0x63,0x63,0x63,0x3E,0x00, // O
00205 0x7E,0x33,0x33,0x3E,0x30,0x30,0x78,0x00, // P 0x50
00206 0x3C,0x66,0x66,0x66,0x6E,0x3C,0x0E,0x00, // Q
00207 0x7E,0x33,0x33,0x3E,0x36,0x33,0x73,0x00, // R
00208 0x3C,0x66,0x30,0x18,0x0C,0x66,0x3C,0x00, // S
00209 0x7E,0x5A,0x18,0x18,0x18,0x18,0x3C,0x00, // T
00210 0x66,0x66,0x66,0x66,0x66,0x66,0x7E,0x00, // U
00211 0x66,0x66,0x66,0x66,0x66,0x3C,0x18,0x00, // V
00212 0x63,0x63,0x63,0x6B,0x7F,0x77,0x63,0x00, // W
00213 0x63,0x63,0x36,0x1C,0x1C,0x36,0x63,0x00, // X
00214 0x66,0x66,0x66,0x3C,0x18,0x18,0x3C,0x00, // Y
00215 0x7F,0x63,0x46,0x0C,0x19,0x33,0x7F,0x00, // Z
00216 0x3C,0x30,0x30,0x30,0x30,0x30,0x3C,0x00, // [
00217 0x60,0x30,0x18,0x0C,0x06,0x03,0x01,0x00, // \ (back slash)
00218 0x3C,0x0C,0x0C,0x0C,0x0C,0x0C,0x3C,0x00, // ]
00219 0x08,0x1C,0x36,0x63,0x00,0x00,0x00,0x00, // ^
00220 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xFF, // _
00221 0x18,0x18,0x0C,0x00,0x00,0x00,0x00,0x00, // ` 0x60
00222 0x00,0x00,0x3C,0x06,0x3E,0x66,0x3B,0x00, // a
00223 0x70,0x30,0x3E,0x33,0x33,0x33,0x6E,0x00, // b
00224 0x00,0x00,0x3C,0x66,0x60,0x66,0x3C,0x00, // c
00225 0x0E,0x06,0x3E,0x66,0x66,0x66,0x3B,0x00, // d
00226 0x00,0x00,0x3C,0x66,0x7E,0x60,0x3C,0x00, // e
00227 0x1C,0x36,0x30,0x78,0x30,0x30,0x78,0x00, // f
00228 0x00,0x00,0x3B,0x66,0x66,0x3E,0x06,0x7C, // g
00229 0x70,0x30,0x36,0x3B,0x33,0x33,0x73,0x00, // h
00230 0x18,0x00,0x38,0x18,0x18,0x18,0x3C,0x00, // i
00231 0x06,0x00,0x06,0x06,0x06,0x66,0x66,0x3C, // j
00232 0x70,0x30,0x33,0x36,0x3C,0x36,0x73,0x00, // k
00233 0x38,0x18,0x18,0x18,0x18,0x18,0x3C,0x00, // l
00234 0x00,0x00,0x66,0x7F,0x7F,0x6B,0x63,0x00, // m
00235 0x00,0x00,0x7C,0x66,0x66,0x66,0x66,0x00, // n
00236 0x00,0x00,0x3C,0x66,0x66,0x66,0x3C,0x00, // o
00237 0x00,0x00,0x6E,0x33,0x33,0x3E,0x30,0x78, // p
00238 0x00,0x00,0x3B,0x66,0x66,0x3E,0x06,0x0F, // q
00239 0x00,0x00,0x6E,0x3B,0x33,0x30,0x78,0x00, // r
00240 0x00,0x00,0x3E,0x60,0x3C,0x06,0x7C,0x00, // s
00241 0x08,0x18,0x3E,0x18,0x18,0x1A,0x0C,0x00, // t
00242 0x00,0x00,0x66,0x66,0x66,0x66,0x3B,0x00, // u
00243 0x00,0x00,0x66,0x66,0x66,0x3C,0x18,0x00, // v
00244 0x00,0x00,0x63,0x6B,0x7F,0x7F,0x36,0x00, // w
00245 0x00,0x00,0x63,0x36,0x1C,0x36,0x63,0x00, // x
00246 0x00,0x00,0x66,0x66,0x66,0x3E,0x06,0x7C, // y
00247 0x00,0x00,0x7E,0x4C,0x18,0x32,0x7E,0x00, // z
00248 0x0E,0x18,0x18,0x70,0x18,0x18,0x0E,0x00, // {
00249 0x0C,0x0C,0x0C,0x00,0x0C,0x0C,0x0C,0x00, // |
00250 0x70,0x18,0x18,0x0E,0x18,0x18,0x70,0x00, // }
00251 0x3B,0x6E,0x00,0x00,0x00,0x00,0x00,0x00, // ~
00252 0x1C,0x36,0x36,0x1C,0x00,0x00,0x00,0x00}; // DEL
00253 
00254 void MobileLCD::locate(int column, int row) {
00255     _row = row;
00256     _column = column;
00257 }
00258     
00259 void MobileLCD::newline() {
00260     _column = 0;
00261     _row++;
00262     if(_row >= _rows) {
00263         _row = 0;
00264     }
00265 }
00266     
00267 int MobileLCD::_putc(int value) { 
00268     int x = _column * 8;  // FIXME: Char sizes
00269     int y = _row * 8;
00270     bitblit(x + 1, y + 1, 8, 8, (char*)&(FONT8x8[value - 0x1F][0]));
00271     
00272     _column++;
00273 
00274     if(_column >= _columns) {
00275         _row++;
00276         _column = 0;
00277     }
00278         
00279     if(_row >= _rows) {
00280         _row = 0;
00281     }           
00282 
00283     return value;
00284 }
00285 
00286 void MobileLCD::cls() {
00287     fill(0, 0, _width, _height, _background);
00288     _row = 0;
00289     _column = 0;
00290 }
00291 
00292 int MobileLCD::width() { 
00293     return _width; 
00294 }
00295 
00296 int MobileLCD::height() { 
00297     return _height; 
00298 }
00299 
00300 int MobileLCD::columns() { 
00301     return _columns; 
00302 }
00303 
00304 int MobileLCD::rows() { 
00305     return _rows; 
00306 }
00307 
00308 void MobileLCD::window(int x, int y, int width, int height) {
00309     _select();
00310     _window(x, y, width, height);
00311     _deselect();
00312 }
00313     
00314 void MobileLCD::putp(int colour) {
00315     _select();
00316     _putp(colour);
00317     _deselect();
00318 }
00319     
00320 void MobileLCD::pixel(int x, int y, int colour) {
00321     _select();
00322     _window(x, y, 1, 1);
00323     _putp(colour);
00324     _deselect();
00325 }
00326 
00327 void MobileLCD::fill(int x, int y, int width, int height, int colour) {
00328     _select();
00329     _window(x, y, width, height);
00330     for(int i=0; i<width*height; i++) {
00331         _putp(colour);
00332     }
00333     _window(0, 0, _width, _height);
00334     _deselect();
00335 }   
00336 
00337     
00338 void MobileLCD::blit(int x, int y, int width, int height, const int* colour) {
00339     _select();
00340     _window(x, y, width, height);
00341     for(int i=0; i<width*height; i++) {
00342         _putp(colour[i]);
00343     }
00344     _window(0, 0, _width, _height);
00345     _deselect();
00346 }   
00347         
00348 void MobileLCD::foreground(int v) {
00349     _foreground = v;
00350 }
00351 
00352 void MobileLCD::background(int v) {
00353     _background = v;
00354 }
00355 
00356 void MobileLCD::bitblit(int x, int y, int width, int height, const char* bitstream) {
00357     _select();
00358     _window(x, y, width, height);
00359     for(int i=0; i<height*width; i++) {
00360         int byte = i / 8;
00361         int 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     
00370