LCD_11062.cpp

00001 /* mbed Library - Sparkfun breakboard LCD_11062
00002  * This is using the Philips PCF8833 controller
00003  */
00004 
00005 #include "LCD_11062.h"
00006 
00007 #include "mbed.h"
00008 
00009 using namespace mbed;
00010 
00011 LCD_11062::LCD_11062(PinName mosi, PinName clk, PinName cs, PinName rst)
00012         : _spi(mosi, NC, clk)
00013         , _rst(rst)
00014         , _cs(cs) {
00015     _row       = 0;
00016     _column    = 0;
00017     _rows      = 16;
00018     _columns   = 16;
00019     _width     = 130;
00020     _height    = 130;
00021     _spifreq   = 80000000;
00022     charwidth  = 8;
00023     charheight = 8;
00024     foreground(0x000000);
00025     background(0xFFFF);
00026     reset();
00027 }
00028 
00029 void LCD_11062::reset() {
00030     long i;
00031     _cs  = 1;
00032     _rst = 0;
00033     _spi.format(9);
00034     _spi.frequency(_spifreq);
00035     wait(0.020);
00036     _rst = 1;
00037     wait(0.020);
00038     _select();
00039     command(0x11); //SLEEPOUT
00040     command(0x3A); //COLMOD
00041     data(0x05);    //0x03 = 16bits-per-pixel 5:6:5 mode
00042     command(0x36); //MADCTL
00043     //data(0x60);  // 0x60 = mirror x, vertical RAM write
00044     command(0x25); //SETCON
00045     data(0x30);    // contrast 0x30
00046     wait(0.002);
00047     command(0x29); //DISPON
00048     command(0x03); //BSTRON
00049 
00050     command(0x2B); //Row Address Set
00051     data(0);
00052     data(131);
00053 
00054     command(0x2A); //Column Address Set
00055     data(0);
00056     data(131);
00057 
00058     command(0x2C); //RAMWR
00059     //Clear RAM to black
00060     for (i = 0; i < (131 * 131); i++) {
00061         data(0);
00062         data(0);
00063     }
00064     _deselect();
00065 }
00066 
00067 void LCD_11062::command(int value) {
00068     _spi.write(value & 0xFF);
00069 }
00070 
00071 void LCD_11062::data(int value) {
00072     _spi.write(value | 0x100);
00073 }
00074 
00075 void LCD_11062::_select() {
00076     _spi.format(9);
00077     _spi.frequency(_spifreq);
00078     _cs = 0;
00079 }
00080 
00081 void LCD_11062::_deselect() {
00082     _cs = 1;
00083 }
00084 
00085 void LCD_11062::_window(int x, int y, int width, int height) {
00086     int x1, x2, y1, y2;
00087     x1 = 130 - (x+width) + 1;
00088     y1 = 130 - (y+height) + 1;
00089     x2 = x1 + width - 1;
00090     y2 = y1 + height - 1 ;
00091     command(0x2A); //CASET column
00092     data(x1);
00093     data(x2);
00094     command(0x2B); //PASET page
00095     data(y1);
00096     data(y2);
00097     command(0x2C); //RAMWR start write to ram
00098 }
00099 
00100 void LCD_11062::_putp(int colour) {
00101     int outcolor;
00102     outcolor = (colour & 0xFF)>>3;
00103     outcolor += (((colour>>8) & 0xFF)>>2)<<5;
00104     outcolor += (((colour>>16) & 0xFF)>>3)<<11;
00105     data((outcolor >> 8) & 0xFF);
00106     data(outcolor & 0xFF);
00107 }
00108 
00109 const unsigned char FONT8x8[97][8] = {
00110     0x08,0x08,0x08,0x00,0x00,0x00,0x00,0x00, // columns, rows, num_bytes_per_char
00111     0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, // space 0x20
00112     0x30,0x78,0x78,0x30,0x30,0x00,0x30,0x00, // !
00113     0x6C,0x6C,0x6C,0x00,0x00,0x00,0x00,0x00, // "
00114     0x6C,0x6C,0xFE,0x6C,0xFE,0x6C,0x6C,0x00, // #
00115     0x18,0x3E,0x60,0x3C,0x06,0x7C,0x18,0x00, // $
00116     0x00,0x63,0x66,0x0C,0x18,0x33,0x63,0x00, // %
00117     0x1C,0x36,0x1C,0x3B,0x6E,0x66,0x3B,0x00, // &
00118     0x30,0x30,0x60,0x00,0x00,0x00,0x00,0x00, // '
00119     0x0C,0x18,0x30,0x30,0x30,0x18,0x0C,0x00, // (
00120     0x30,0x18,0x0C,0x0C,0x0C,0x18,0x30,0x00, // )
00121     0x00,0x66,0x3C,0xFF,0x3C,0x66,0x00,0x00, // *
00122     0x00,0x30,0x30,0xFC,0x30,0x30,0x00,0x00, // +
00123     0x00,0x00,0x00,0x00,0x00,0x18,0x18,0x30, // ,
00124     0x00,0x00,0x00,0x7E,0x00,0x00,0x00,0x00, // -
00125     0x00,0x00,0x00,0x00,0x00,0x18,0x18,0x00, // .
00126     0x03,0x06,0x0C,0x18,0x30,0x60,0x40,0x00, // / (forward slash)
00127     0x3E,0x63,0x63,0x6B,0x63,0x63,0x3E,0x00, // 0 0x30
00128     0x18,0x38,0x58,0x18,0x18,0x18,0x7E,0x00, // 1
00129     0x3C,0x66,0x06,0x1C,0x30,0x66,0x7E,0x00, // 2
00130     0x3C,0x66,0x06,0x1C,0x06,0x66,0x3C,0x00, // 3
00131     0x0E,0x1E,0x36,0x66,0x7F,0x06,0x0F,0x00, // 4
00132     0x7E,0x60,0x7C,0x06,0x06,0x66,0x3C,0x00, // 5
00133     0x1C,0x30,0x60,0x7C,0x66,0x66,0x3C,0x00, // 6
00134     0x7E,0x66,0x06,0x0C,0x18,0x18,0x18,0x00, // 7
00135     0x3C,0x66,0x66,0x3C,0x66,0x66,0x3C,0x00, // 8
00136     0x3C,0x66,0x66,0x3E,0x06,0x0C,0x38,0x00, // 9
00137     0x00,0x18,0x18,0x00,0x00,0x18,0x18,0x00, // :
00138     0x00,0x18,0x18,0x00,0x00,0x18,0x18,0x30, // ;
00139     0x0C,0x18,0x30,0x60,0x30,0x18,0x0C,0x00, // <
00140     0x00,0x00,0x7E,0x00,0x00,0x7E,0x00,0x00, // =
00141     0x30,0x18,0x0C,0x06,0x0C,0x18,0x30,0x00, // >
00142     0x3C,0x66,0x06,0x0C,0x18,0x00,0x18,0x00, // ?
00143     0x3E,0x63,0x6F,0x69,0x6F,0x60,0x3E,0x00, // @ 0x40
00144     0x18,0x3C,0x66,0x66,0x7E,0x66,0x66,0x00, // A
00145     0x7E,0x33,0x33,0x3E,0x33,0x33,0x7E,0x00, // B
00146     0x1E,0x33,0x60,0x60,0x60,0x33,0x1E,0x00, // C
00147     0x7C,0x36,0x33,0x33,0x33,0x36,0x7C,0x00, // D
00148     0x7F,0x31,0x34,0x3C,0x34,0x31,0x7F,0x00, // E
00149     0x7F,0x31,0x34,0x3C,0x34,0x30,0x78,0x00, // F
00150     0x1E,0x33,0x60,0x60,0x67,0x33,0x1F,0x00, // G
00151     0x66,0x66,0x66,0x7E,0x66,0x66,0x66,0x00, // H
00152     0x3C,0x18,0x18,0x18,0x18,0x18,0x3C,0x00, // I
00153     0x0F,0x06,0x06,0x06,0x66,0x66,0x3C,0x00, // J
00154     0x73,0x33,0x36,0x3C,0x36,0x33,0x73,0x00, // K
00155     0x78,0x30,0x30,0x30,0x31,0x33,0x7F,0x00, // L
00156     0x63,0x77,0x7F,0x7F,0x6B,0x63,0x63,0x00, // M
00157     0x63,0x73,0x7B,0x6F,0x67,0x63,0x63,0x00, // N
00158     0x3E,0x63,0x63,0x63,0x63,0x63,0x3E,0x00, // O
00159     0x7E,0x33,0x33,0x3E,0x30,0x30,0x78,0x00, // P 0x50
00160     0x3C,0x66,0x66,0x66,0x6E,0x3C,0x0E,0x00, // Q
00161     0x7E,0x33,0x33,0x3E,0x36,0x33,0x73,0x00, // R
00162     0x3C,0x66,0x30,0x18,0x0C,0x66,0x3C,0x00, // S
00163     0x7E,0x5A,0x18,0x18,0x18,0x18,0x3C,0x00, // T
00164     0x66,0x66,0x66,0x66,0x66,0x66,0x7E,0x00, // U
00165     0x66,0x66,0x66,0x66,0x66,0x3C,0x18,0x00, // V
00166     0x63,0x63,0x63,0x6B,0x7F,0x77,0x63,0x00, // W
00167     0x63,0x63,0x36,0x1C,0x1C,0x36,0x63,0x00, // X
00168     0x66,0x66,0x66,0x3C,0x18,0x18,0x3C,0x00, // Y
00169     0x7F,0x63,0x46,0x0C,0x19,0x33,0x7F,0x00, // Z
00170     0x3C,0x30,0x30,0x30,0x30,0x30,0x3C,0x00, // [
00171     0x60,0x30,0x18,0x0C,0x06,0x03,0x01,0x00, // \ (back slash)
00172     0x3C,0x0C,0x0C,0x0C,0x0C,0x0C,0x3C,0x00, // ]
00173     0x08,0x1C,0x36,0x63,0x00,0x00,0x00,0x00, // ^
00174     0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xFF, // _
00175     0x18,0x18,0x0C,0x00,0x00,0x00,0x00,0x00, // ` 0x60
00176     0x00,0x00,0x3C,0x06,0x3E,0x66,0x3B,0x00, // a
00177     0x70,0x30,0x3E,0x33,0x33,0x33,0x6E,0x00, // b
00178     0x00,0x00,0x3C,0x66,0x60,0x66,0x3C,0x00, // c
00179     0x0E,0x06,0x3E,0x66,0x66,0x66,0x3B,0x00, // d
00180     0x00,0x00,0x3C,0x66,0x7E,0x60,0x3C,0x00, // e
00181     0x1C,0x36,0x30,0x78,0x30,0x30,0x78,0x00, // f
00182     0x00,0x00,0x3B,0x66,0x66,0x3E,0x06,0x7C, // g
00183     0x70,0x30,0x36,0x3B,0x33,0x33,0x73,0x00, // h
00184     0x18,0x00,0x38,0x18,0x18,0x18,0x3C,0x00, // i
00185     0x06,0x00,0x06,0x06,0x06,0x66,0x66,0x3C, // j
00186     0x70,0x30,0x33,0x36,0x3C,0x36,0x73,0x00, // k
00187     0x38,0x18,0x18,0x18,0x18,0x18,0x3C,0x00, // l
00188     0x00,0x00,0x66,0x7F,0x7F,0x6B,0x63,0x00, // m
00189     0x00,0x00,0x7C,0x66,0x66,0x66,0x66,0x00, // n
00190     0x00,0x00,0x3C,0x66,0x66,0x66,0x3C,0x00, // o
00191     0x00,0x00,0x6E,0x33,0x33,0x3E,0x30,0x78, // p
00192     0x00,0x00,0x3B,0x66,0x66,0x3E,0x06,0x0F, // q
00193     0x00,0x00,0x6E,0x3B,0x33,0x30,0x78,0x00, // r
00194     0x00,0x00,0x3E,0x60,0x3C,0x06,0x7C,0x00, // s
00195     0x08,0x18,0x3E,0x18,0x18,0x1A,0x0C,0x00, // t
00196     0x00,0x00,0x66,0x66,0x66,0x66,0x3B,0x00, // u
00197     0x00,0x00,0x66,0x66,0x66,0x3C,0x18,0x00, // v
00198     0x00,0x00,0x63,0x6B,0x7F,0x7F,0x36,0x00, // w
00199     0x00,0x00,0x63,0x36,0x1C,0x36,0x63,0x00, // x
00200     0x00,0x00,0x66,0x66,0x66,0x3E,0x06,0x7C, // y
00201     0x00,0x00,0x7E,0x4C,0x18,0x32,0x7E,0x00, // z
00202     0x0E,0x18,0x18,0x70,0x18,0x18,0x0E,0x00, // {
00203     0x0C,0x0C,0x0C,0x00,0x0C,0x0C,0x0C,0x00, // |
00204     0x70,0x18,0x18,0x0E,0x18,0x18,0x70,0x00, // }
00205     0x3B,0x6E,0x00,0x00,0x00,0x00,0x00,0x00, // ~
00206     0x1C,0x36,0x36,0x1C,0x00,0x00,0x00,0x00  // DEL
00207 };
00208 
00209 void LCD_11062::locate(int column, int row) {
00210     _row = row;
00211     _column = column;
00212 }
00213 
00214 void LCD_11062::newline() {
00215     _column = 0;
00216     _row++;
00217     if (_row >= _rows) {
00218         _row = 0;
00219     }
00220 }
00221 
00222 int LCD_11062::_putc(int value) {
00223     int x = _column * charwidth;  // FIXME: Char sizes
00224     int y = _row * charheight;
00225     bitblit(x+1 , y+1 , charwidth, charheight, (char*)&(FONT8x8[value - 0x1F][0]));
00226     _column++;
00227     if (_column >= _columns) {
00228         _row++;
00229         _column = 0;
00230     }
00231     if (_row >= _rows) {
00232         _row = 0;
00233     }
00234     return value;
00235 }
00236 
00237 void LCD_11062::cls() {
00238     fill(0, 0, _width, _height, _background);
00239     _row = 0;
00240     _column = 0;
00241 }
00242 
00243 int LCD_11062::width() {
00244     return _width;
00245 }
00246 
00247 int LCD_11062::height() {
00248     return _height;
00249 }
00250 
00251 int LCD_11062::columns() {
00252     return _columns;
00253 }
00254 
00255 int LCD_11062::rows() {
00256     return _rows;
00257 }
00258 
00259 void LCD_11062::window(int x, int y, int width, int height) {
00260     _select();
00261     _window(x, y, width, height);
00262     _deselect();
00263 }
00264 
00265 void LCD_11062::putp(int colour) {
00266     _select();
00267     _putp(colour);
00268     _deselect();
00269 }
00270 
00271 void LCD_11062::pixel(int x, int y, int colour) {
00272     _select();
00273     _window(x, y, 1, 1);
00274     _putp(colour);
00275     _deselect();
00276 }
00277 
00278 void LCD_11062::fill(int x, int y, int width, int height, int colour) {
00279     _select();
00280     _window(x, y, width, height);
00281     for (int i=0; i<width*height; i++) {
00282         _putp(colour);
00283     }
00284     _window(0, 0, _width, _height);
00285     _deselect();
00286 }
00287 
00288 void LCD_11062::blit(int x, int y, int width, int height, const int* colour) {
00289     _select();
00290     _window(x, y, width, height);
00291     for (int i=0; i<width*height; i++) {
00292         _putp(colour[i]);
00293     }
00294     _window(0, 0, _width, _height);
00295     _deselect();
00296 }
00297 
00298 void LCD_11062::foreground(int v) {
00299     _foreground = v;
00300 }
00301 
00302 void LCD_11062::background(int v) {
00303     _background = v;
00304 }
00305 
00306 void LCD_11062::bitblit(int x, int y, int width, int height, const char* bitstream) {
00307     int bytediv = (width*height)>>3;
00308     _select();
00309     _window(x, y, width, height);
00310     for (int i=height*width-1; i>=0; i--) {
00311         unsigned char byte = i / bytediv;
00312         unsigned char bit = (i % width)/(width >> 3);
00313         int colour = (((bitstream[byte] << bit) & 0x80) ? _foreground : _background);
00314         _putp(colour);
00315     }
00316     _window(0, 0, _width, _height);
00317     _deselect();
00318 }