NokiaLCD.cpp

00001 /* mbed Nokia LCD Library
00002  * Copyright (c) 2007-2010, sford
00003  */
00004 
00005 #include "NokiaLCD.h"
00006 
00007 #include "mbed.h"
00008 
00009 #define NOKIALCD_ROWS 16
00010 #define NOKIALCD_COLS 16
00011 #define NOKIALCD_WIDTH 130
00012 #define NOKIALCD_HEIGHT 130
00013 #define NOKIALCD_FREQUENCY 5000000
00014 
00015 NokiaLCD::NokiaLCD(PinName mosi, PinName sclk, PinName cs, PinName rst, LCDType type)
00016         : _spi(mosi, NC, sclk)
00017         , _rst(rst)
00018         , _cs(cs) {
00019 
00020     _type = type;
00021 
00022     _row = 0;
00023     _column = 0;
00024     _foreground = 0x00FFFFFF;
00025     _background = 0x00000000;
00026 
00027     reset();
00028 }
00029 
00030 void NokiaLCD::reset() {
00031 
00032     // setup the SPI interface and bring display out of reset
00033     _cs = 1;
00034     _rst = 0;
00035     _spi.format(9);
00036     _spi.frequency(NOKIALCD_FREQUENCY);
00037     wait_ms(1);
00038     _rst = 1;
00039     wait_ms(1);
00040 
00041     _cs = 0;
00042 
00043     switch (_type) {
00044         case LCD6100:
00045             command(0xCA); // display control
00046             data(0);
00047             data(32);
00048             data(0);
00049             command(0xBB);
00050             data(1);
00051             command(0xD1); // oscillator on
00052             command(0x94); // sleep out
00053             command(0x20); // power control
00054             data(0x0F);
00055             command(0xA7); // invert display
00056             command(0x81); // Voltage control
00057             data(39);      // contrast setting: 0..63
00058             data(3);       // resistance ratio
00059             wait_ms(1);
00060             command(0xBC);
00061             data(0);
00062             data(1);
00063             data(4);
00064             command(0xAF);  // turn on the display
00065             break;
00066             
00067         case LCD6610:
00068             command(0xCA);    // display control
00069             data(0);
00070             data(31);
00071             data(0);
00072             command(0xBB);
00073             data(1);
00074             command(0xD1); // oscillator on
00075             command(0x94); // sleep out
00076             command(0x20); // power control
00077             data(0x0F);
00078             command(0xA7); // invert display
00079             command(0x81); // Voltage control
00080             data(39);      // contrast setting: 0..63
00081             data(3);       // resistance ratio
00082             wait_ms(1);
00083             command(0xBC);
00084             data(0);
00085             data(0);
00086             data(2);
00087             command(0xAF);  // turn on the display
00088             break;
00089             
00090         case PCF8833:
00091             command(0x11);  // sleep out
00092             command(0x3A);  // column mode
00093             data(0x05);
00094             command(0x36);  // madctl
00095             data(0x60);     // vertical RAM, flip x
00096             command(0x25);  // setcon
00097             data(0x30);// contrast 0x30
00098             wait_ms(2);
00099             command(0x29);//DISPON
00100             command(0x03);//BSTRON
00101             break;
00102     }
00103 
00104     _cs = 1;
00105 
00106     cls();
00107 }
00108 
00109 void NokiaLCD::command(int value) {
00110     _spi.write(value & 0xFF);
00111 }
00112 
00113 void NokiaLCD::data(int value) {
00114     _spi.write(value | 0x100);
00115 }
00116 
00117 void NokiaLCD::_window(int x, int y, int width, int height) {
00118     int x1 = x + 2;
00119     int y1 = y + 0;
00120     int x2 = x1 + width - 1;
00121     int y2 = y1 + height - 1;
00122 
00123     switch (_type) {
00124         case LCD6100:
00125         case LCD6610:
00126             command(0x15); // column
00127             data(x1);
00128             data(x2);
00129             command(0x75); // row
00130             data(y1);
00131             data(y2);
00132             command(0x5C); // start write to ram
00133             break;
00134         case PCF8833:
00135             command(0x2A);  // column
00136             data(x1);
00137             data(x2);
00138             command(0x2B); // row
00139             data(y1);
00140             data(y2);
00141             command(0x2C); // start write to ram
00142             break;
00143     }
00144 }
00145 
00146 void NokiaLCD::_putp(int colour) {
00147     int gr = ((colour >> 20) & 0x0F)
00148              | ((colour >> 8 ) & 0xF0);
00149     int nb = ((colour >> 4 ) & 0x0F);
00150     data(nb);
00151     data(gr);
00152 }
00153 
00154 const unsigned char FONT8x8[97][8] = {
00155     0x08,0x08,0x08,0x00,0x00,0x00,0x00,0x00, // columns, rows, num_bytes_per_char
00156     0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, // space 0x20
00157     0x30,0x78,0x78,0x30,0x30,0x00,0x30,0x00, // !
00158     0x6C,0x6C,0x6C,0x00,0x00,0x00,0x00,0x00, // "
00159     0x6C,0x6C,0xFE,0x6C,0xFE,0x6C,0x6C,0x00, // #
00160     0x18,0x3E,0x60,0x3C,0x06,0x7C,0x18,0x00, // $
00161     0x00,0x63,0x66,0x0C,0x18,0x33,0x63,0x00, // %
00162     0x1C,0x36,0x1C,0x3B,0x6E,0x66,0x3B,0x00, // &
00163     0x30,0x30,0x60,0x00,0x00,0x00,0x00,0x00, // '
00164     0x0C,0x18,0x30,0x30,0x30,0x18,0x0C,0x00, // (
00165     0x30,0x18,0x0C,0x0C,0x0C,0x18,0x30,0x00, // )
00166     0x00,0x66,0x3C,0xFF,0x3C,0x66,0x00,0x00, // *
00167     0x00,0x30,0x30,0xFC,0x30,0x30,0x00,0x00, // +
00168     0x00,0x00,0x00,0x00,0x00,0x18,0x18,0x30, // ,
00169     0x00,0x00,0x00,0x7E,0x00,0x00,0x00,0x00, // -
00170     0x00,0x00,0x00,0x00,0x00,0x18,0x18,0x00, // .
00171     0x03,0x06,0x0C,0x18,0x30,0x60,0x40,0x00, // / (forward slash)
00172     0x3E,0x63,0x63,0x6B,0x63,0x63,0x3E,0x00, // 0 0x30
00173     0x18,0x38,0x58,0x18,0x18,0x18,0x7E,0x00, // 1
00174     0x3C,0x66,0x06,0x1C,0x30,0x66,0x7E,0x00, // 2
00175     0x3C,0x66,0x06,0x1C,0x06,0x66,0x3C,0x00, // 3
00176     0x0E,0x1E,0x36,0x66,0x7F,0x06,0x0F,0x00, // 4
00177     0x7E,0x60,0x7C,0x06,0x06,0x66,0x3C,0x00, // 5
00178     0x1C,0x30,0x60,0x7C,0x66,0x66,0x3C,0x00, // 6
00179     0x7E,0x66,0x06,0x0C,0x18,0x18,0x18,0x00, // 7
00180     0x3C,0x66,0x66,0x3C,0x66,0x66,0x3C,0x00, // 8
00181     0x3C,0x66,0x66,0x3E,0x06,0x0C,0x38,0x00, // 9
00182     0x00,0x18,0x18,0x00,0x00,0x18,0x18,0x00, // :
00183     0x00,0x18,0x18,0x00,0x00,0x18,0x18,0x30, // ;
00184     0x0C,0x18,0x30,0x60,0x30,0x18,0x0C,0x00, // <
00185     0x00,0x00,0x7E,0x00,0x00,0x7E,0x00,0x00, // =
00186     0x30,0x18,0x0C,0x06,0x0C,0x18,0x30,0x00, // >
00187     0x3C,0x66,0x06,0x0C,0x18,0x00,0x18,0x00, // ?
00188     0x3E,0x63,0x6F,0x69,0x6F,0x60,0x3E,0x00, // @ 0x40
00189     0x18,0x3C,0x66,0x66,0x7E,0x66,0x66,0x00, // A
00190     0x7E,0x33,0x33,0x3E,0x33,0x33,0x7E,0x00, // B
00191     0x1E,0x33,0x60,0x60,0x60,0x33,0x1E,0x00, // C
00192     0x7C,0x36,0x33,0x33,0x33,0x36,0x7C,0x00, // D
00193     0x7F,0x31,0x34,0x3C,0x34,0x31,0x7F,0x00, // E
00194     0x7F,0x31,0x34,0x3C,0x34,0x30,0x78,0x00, // F
00195     0x1E,0x33,0x60,0x60,0x67,0x33,0x1F,0x00, // G
00196     0x66,0x66,0x66,0x7E,0x66,0x66,0x66,0x00, // H
00197     0x3C,0x18,0x18,0x18,0x18,0x18,0x3C,0x00, // I
00198     0x0F,0x06,0x06,0x06,0x66,0x66,0x3C,0x00, // J
00199     0x73,0x33,0x36,0x3C,0x36,0x33,0x73,0x00, // K
00200     0x78,0x30,0x30,0x30,0x31,0x33,0x7F,0x00, // L
00201     0x63,0x77,0x7F,0x7F,0x6B,0x63,0x63,0x00, // M
00202     0x63,0x73,0x7B,0x6F,0x67,0x63,0x63,0x00, // N
00203     0x3E,0x63,0x63,0x63,0x63,0x63,0x3E,0x00, // O
00204     0x7E,0x33,0x33,0x3E,0x30,0x30,0x78,0x00, // P 0x50
00205     0x3C,0x66,0x66,0x66,0x6E,0x3C,0x0E,0x00, // Q
00206     0x7E,0x33,0x33,0x3E,0x36,0x33,0x73,0x00, // R
00207     0x3C,0x66,0x30,0x18,0x0C,0x66,0x3C,0x00, // S
00208     0x7E,0x5A,0x18,0x18,0x18,0x18,0x3C,0x00, // T
00209     0x66,0x66,0x66,0x66,0x66,0x66,0x7E,0x00, // U
00210     0x66,0x66,0x66,0x66,0x66,0x3C,0x18,0x00, // V
00211     0x63,0x63,0x63,0x6B,0x7F,0x77,0x63,0x00, // W
00212     0x63,0x63,0x36,0x1C,0x1C,0x36,0x63,0x00, // X
00213     0x66,0x66,0x66,0x3C,0x18,0x18,0x3C,0x00, // Y
00214     0x7F,0x63,0x46,0x0C,0x19,0x33,0x7F,0x00, // Z
00215     0x3C,0x30,0x30,0x30,0x30,0x30,0x3C,0x00, // [
00216     0x60,0x30,0x18,0x0C,0x06,0x03,0x01,0x00, // \ (back slash)
00217     0x3C,0x0C,0x0C,0x0C,0x0C,0x0C,0x3C,0x00, // ]
00218     0x08,0x1C,0x36,0x63,0x00,0x00,0x00,0x00, // ^
00219     0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xFF, // _
00220     0x18,0x18,0x0C,0x00,0x00,0x00,0x00,0x00, // ` 0x60
00221     0x00,0x00,0x3C,0x06,0x3E,0x66,0x3B,0x00, // a
00222     0x70,0x30,0x3E,0x33,0x33,0x33,0x6E,0x00, // b
00223     0x00,0x00,0x3C,0x66,0x60,0x66,0x3C,0x00, // c
00224     0x0E,0x06,0x3E,0x66,0x66,0x66,0x3B,0x00, // d
00225     0x00,0x00,0x3C,0x66,0x7E,0x60,0x3C,0x00, // e
00226     0x1C,0x36,0x30,0x78,0x30,0x30,0x78,0x00, // f
00227     0x00,0x00,0x3B,0x66,0x66,0x3E,0x06,0x7C, // g
00228     0x70,0x30,0x36,0x3B,0x33,0x33,0x73,0x00, // h
00229     0x18,0x00,0x38,0x18,0x18,0x18,0x3C,0x00, // i
00230     0x06,0x00,0x06,0x06,0x06,0x66,0x66,0x3C, // j
00231     0x70,0x30,0x33,0x36,0x3C,0x36,0x73,0x00, // k
00232     0x38,0x18,0x18,0x18,0x18,0x18,0x3C,0x00, // l
00233     0x00,0x00,0x66,0x7F,0x7F,0x6B,0x63,0x00, // m
00234     0x00,0x00,0x7C,0x66,0x66,0x66,0x66,0x00, // n
00235     0x00,0x00,0x3C,0x66,0x66,0x66,0x3C,0x00, // o
00236     0x00,0x00,0x6E,0x33,0x33,0x3E,0x30,0x78, // p
00237     0x00,0x00,0x3B,0x66,0x66,0x3E,0x06,0x0F, // q
00238     0x00,0x00,0x6E,0x3B,0x33,0x30,0x78,0x00, // r
00239     0x00,0x00,0x3E,0x60,0x3C,0x06,0x7C,0x00, // s
00240     0x08,0x18,0x3E,0x18,0x18,0x1A,0x0C,0x00, // t
00241     0x00,0x00,0x66,0x66,0x66,0x66,0x3B,0x00, // u
00242     0x00,0x00,0x66,0x66,0x66,0x3C,0x18,0x00, // v
00243     0x00,0x00,0x63,0x6B,0x7F,0x7F,0x36,0x00, // w
00244     0x00,0x00,0x63,0x36,0x1C,0x36,0x63,0x00, // x
00245     0x00,0x00,0x66,0x66,0x66,0x3E,0x06,0x7C, // y
00246     0x00,0x00,0x7E,0x4C,0x18,0x32,0x7E,0x00, // z
00247     0x0E,0x18,0x18,0x70,0x18,0x18,0x0E,0x00, // {
00248     0x0C,0x0C,0x0C,0x00,0x0C,0x0C,0x0C,0x00, // |
00249     0x70,0x18,0x18,0x0E,0x18,0x18,0x70,0x00, // }
00250     0x3B,0x6E,0x00,0x00,0x00,0x00,0x00,0x00, // ~
00251     0x1C,0x36,0x36,0x1C,0x00,0x00,0x00,0x00
00252 }; // DEL
00253 
00254 void NokiaLCD::locate(int column, int row) {
00255     _column = column;
00256     _row = row;
00257 }
00258 
00259 void NokiaLCD::newline() {
00260     _column = 0;
00261     _row++;
00262     if (_row >= _rows) {
00263         _row = 0;
00264     }
00265 }
00266 
00267 int NokiaLCD::_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 >= NOKIALCD_COLS) {
00275         _row++;
00276         _column = 0;
00277     }
00278 
00279     if (_row >= NOKIALCD_ROWS) {
00280         _row = 0;
00281     }
00282 
00283     return value;
00284 }
00285 
00286 void NokiaLCD::cls() {
00287     fill(0, 0, NOKIALCD_WIDTH, NOKIALCD_HEIGHT, _background);
00288     _row = 0;
00289     _column = 0;
00290 }
00291 
00292 
00293 void NokiaLCD::window(int x, int y, int width, int height) {
00294     _cs = 0;
00295     _window(x, y, width, height);
00296     _cs = 1;
00297 }
00298 
00299 void NokiaLCD::putp(int colour) {
00300     _cs = 0;
00301     _putp(colour);
00302     _cs = 1;
00303 }
00304 
00305 void NokiaLCD::pixel(int x, int y, int colour) {
00306     _cs = 0;
00307     _window(x, y, 1, 1);
00308     _putp(colour);
00309     _cs = 1;
00310 }
00311 
00312 void NokiaLCD::fill(int x, int y, int width, int height, int colour) {
00313     _cs = 0;
00314     _window(x, y, width, height);
00315     switch (_type) {
00316         case LCD6100:
00317         case PCF8833:
00318             for (int i=0; i<width*height; i++) {
00319                 _putp(colour);
00320             }
00321             break;
00322         case LCD6610:
00323             for (int i=0; i<width*height/2; i++) {
00324                 int r4 = (colour >> (16 + 4)) & 0xF;
00325                 int g4 = (colour >> (8 + 4)) & 0xF;
00326                 int b4 = (colour >> (0 + 4)) & 0xF;
00327                 int d1 = (r4 << 4) | g4;
00328                 int d2 = (b4 << 4) | r4;
00329                 int d3 = (g4 << 4) | b4;
00330                 data(d1); 
00331                 data(d2);   
00332                 data(d3);
00333             }
00334             break;
00335     }
00336     _window(0, 0, NOKIALCD_WIDTH, NOKIALCD_HEIGHT);
00337     _cs = 1;
00338 }
00339 
00340 void NokiaLCD::blit(int x, int y, int width, int height, const int* colour) {
00341     _cs = 0;
00342     _window(x, y, width, height);
00343 
00344     switch (_type) {
00345         case LCD6100:
00346         case PCF8833:
00347             for (int i=0; i<width*height; i++) {
00348                  _putp(colour[i]);
00349              }
00350              break;
00351         case LCD6610:
00352             for (int i=0; i<width*height/2; i++) {
00353                 int r41 = (colour[i*2] >> (16 + 4)) & 0xF;
00354                 int g41 = (colour[i*2] >> (8 + 4)) & 0xF;
00355                 int b41 = (colour[i*2] >> (0 + 4)) & 0xF;
00356            
00357                 int r42 = (colour[i*2+1] >> (16 + 4)) & 0xF;
00358                 int g42 = (colour[i*2+1] >> (8 + 4)) & 0xF;
00359                 int b42 = (colour[i*2+1] >> (0 + 4)) & 0xF;   
00360                 int d1 = (r41 << 4) | g41;
00361                 int d2 = (b41 << 4) | r42;
00362                 int d3 = (g42 << 4) | b42;               
00363                 data(d1); 
00364                 data(d2); 
00365                 data(d3); 
00366             }
00367             break;
00368      }            
00369     _window(0, 0, NOKIALCD_WIDTH, NOKIALCD_HEIGHT);
00370     _cs = 1;
00371 }
00372 
00373 void NokiaLCD::bitblit(int x, int y, int width, int height, const char* bitstream) {
00374     _cs = 0;
00375     _window(x, y, width, height);
00376 
00377     switch (_type) {
00378         case LCD6100:
00379         case PCF8833:
00380             for (int i=0; i<height*width; i++) {
00381                 int byte = i / 8;
00382                 int bit = i % 8;
00383                 int colour = ((bitstream[byte] << bit) & 0x80) ? _foreground : _background;
00384                 _putp(colour);
00385             }
00386             break;
00387         case LCD6610:
00388             for(int i=0; i<height*width/2; i++) {
00389                 int byte1 = (i*2) / 8;
00390                 int bit1 = (i*2) % 8;   
00391                 int colour1 = ((bitstream[byte1] << bit1) & 0x80) ? _foreground : _background;
00392                 int byte2 = (i*2+1) / 8;
00393                 int bit2 = (i*2+1) % 8;   
00394                 int colour2 = ((bitstream[byte2] << bit2) & 0x80) ? _foreground : _background;
00395     
00396                 int r41 = (colour1 >> (16 + 4)) & 0xF;
00397                 int g41 = (colour1 >> (8 + 4)) & 0xF;
00398                 int b41 = (colour1 >> (0 + 4)) & 0xF;
00399            
00400                 int r42 = (colour2 >> (16 + 4)) & 0xF;
00401                 int g42 = (colour2 >> (8 + 4)) & 0xF;
00402                 int b42 = (colour2 >> (0 + 4)) & 0xF;   
00403                 int d1 = (r41 << 4) | g41;
00404                 int d2 = (b41 << 4) | r42;
00405                 int d3 = (g42 << 4) | b42;               
00406                 data(d1); 
00407                 data(d2); 
00408                 data(d3); 
00409             }
00410             break;
00411      }
00412     _window(0, 0, _width, _height);
00413     _cs = 1;
00414 }
00415 
00416 void NokiaLCD::foreground(int c) {
00417     _foreground = c;
00418 }
00419 
00420 void NokiaLCD::background(int c) {
00421     _background = c;
00422 }
00423 
00424 int NokiaLCD::width() {
00425     return NOKIALCD_WIDTH;
00426 }
00427 
00428 int NokiaLCD::height() {
00429     return NOKIALCD_HEIGHT;
00430 }
00431 
00432 int NokiaLCD::columns() {
00433     return NOKIALCD_COLS;
00434 }
00435 
00436 int NokiaLCD::rows() {
00437     return NOKIALCD_ROWS;
00438 }