Tiny change in the order of the initializers to eliminate compiler warning.
Dependents: Smart-WiFly-WebServer
Fork of C12832 by
C12832.cpp
00001 /* mbed library for the mbed Lab Board 128*32 pixel LCD 00002 * use C12832 controller 00003 * Copyright (c) 2012 Peter Drescher - DC2PD 00004 * Released under the MIT License: http://mbed.org/license/mit 00005 * 00006 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 00007 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 00008 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 00009 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 00010 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 00011 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 00012 * THE SOFTWARE. 00013 */ 00014 00015 // 13.10.12 initial design 00016 // 25.10.12 add autorefresh of screen 00017 // 25.10.12 add standart font 00018 // 20.12.12 add bitmap graphics 00019 00020 // optional defines : 00021 // #define debug_lcd 1 00022 00023 #include "C12832.h" 00024 #include "mbed.h" 00025 #include "stdio.h" 00026 #include "Small_7.h" 00027 00028 #define BPP 1 // Bits per pixel 00029 00030 00031 C12832::C12832(PinName mosi, PinName sck, PinName reset, PinName a0, PinName ncs, const char* name) 00032 : GraphicsDisplay(name),_spi(mosi,NC,sck),_reset(reset),_A0(a0),_CS(ncs) 00033 { 00034 orientation = 1; 00035 draw_mode = NORMAL; 00036 char_x = 0; 00037 lcd_reset(); 00038 } 00039 00040 00041 int C12832::width() 00042 { 00043 if (orientation == 0 || orientation == 2) return 32; 00044 else return 128; 00045 } 00046 00047 int C12832::height() 00048 { 00049 if (orientation == 0 || orientation == 2) return 128; 00050 else return 32; 00051 } 00052 00053 00054 void C12832::invert(unsigned int o) 00055 { 00056 if(o == 0) wr_cmd(0xA6); 00057 else wr_cmd(0xA7); 00058 } 00059 00060 00061 void C12832::set_contrast(unsigned int o) 00062 { 00063 contrast = o; 00064 wr_cmd(0x81); // set volume 00065 wr_cmd(o & 0x3F); 00066 } 00067 00068 unsigned int C12832::get_contrast(void) 00069 { 00070 return(contrast); 00071 } 00072 00073 00074 // write command to lcd controller 00075 00076 void C12832::wr_cmd(unsigned char cmd) 00077 { 00078 _A0 = 0; 00079 _CS = 0; 00080 _spi.write(cmd); 00081 _CS = 1; 00082 } 00083 00084 // write data to lcd controller 00085 00086 void C12832::wr_dat(unsigned char dat) 00087 { 00088 _A0 = 1; 00089 _CS = 0; 00090 _spi.write(dat); 00091 _CS = 1; 00092 } 00093 00094 // reset and init the lcd controller 00095 00096 void C12832::lcd_reset() 00097 { 00098 00099 _spi.format(8,3); // 8 bit spi mode 3 00100 _spi.frequency(20000000); // 19,2 Mhz SPI clock 00101 _A0 = 0; 00102 _CS = 1; 00103 _reset = 0; // display reset 00104 wait_us(50); 00105 _reset = 1; // end reset 00106 wait_ms(5); 00107 00108 /* Start Initial Sequence ----------------------------------------------------*/ 00109 00110 wr_cmd(0xAE); // display off 00111 wr_cmd(0xA2); // bias voltage 00112 00113 wr_cmd(0xA0); 00114 wr_cmd(0xC8); // colum normal 00115 00116 wr_cmd(0x22); // voltage resistor ratio 00117 wr_cmd(0x2F); // power on 00118 //wr_cmd(0xA4); // LCD display ram 00119 wr_cmd(0x40); // start line = 0 00120 wr_cmd(0xAF); // display ON 00121 00122 wr_cmd(0x81); // set contrast 00123 wr_cmd(0x17); // set contrast 00124 00125 wr_cmd(0xA6); // display normal 00126 00127 00128 // clear and update LCD 00129 memset(buffer,0x00,512); // clear display buffer 00130 copy_to_lcd(); 00131 auto_up = 1; // switch on auto update 00132 // dont do this by default. Make the user call 00133 //claim(stdout); // redirekt printf to lcd 00134 locate(0,0); 00135 set_font((unsigned char*)Small_7); // standart font 00136 } 00137 00138 // set one pixel in buffer 00139 00140 void C12832::pixel(int x, int y, int color) 00141 { 00142 // first check parameter 00143 if(x > 128 || y > 32 || x < 0 || y < 0) return; 00144 00145 if(draw_mode == NORMAL) { 00146 if(color == 0) 00147 buffer[x + ((y/8) * 128)] &= ~(1 << (y%8)); // erase pixel 00148 else 00149 buffer[x + ((y/8) * 128)] |= (1 << (y%8)); // set pixel 00150 } else { // XOR mode 00151 if(color == 1) 00152 buffer[x + ((y/8) * 128)] ^= (1 << (y%8)); // xor pixel 00153 } 00154 } 00155 00156 // update lcd 00157 00158 void C12832::copy_to_lcd(void) 00159 { 00160 00161 int i=0; 00162 00163 //page 0 00164 wr_cmd(0x00); // set column low nibble 0 00165 wr_cmd(0x10); // set column hi nibble 0 00166 wr_cmd(0xB0); // set page address 0 00167 _A0 = 1; 00168 for(i=0; i<128; i++) { 00169 wr_dat(buffer[i]); 00170 } 00171 00172 // page 1 00173 wr_cmd(0x00); // set column low nibble 0 00174 wr_cmd(0x10); // set column hi nibble 0 00175 wr_cmd(0xB1); // set page address 1 00176 _A0 = 1; 00177 for(i=128; i<256; i++) { 00178 wr_dat(buffer[i]); 00179 } 00180 00181 //page 2 00182 wr_cmd(0x00); // set column low nibble 0 00183 wr_cmd(0x10); // set column hi nibble 0 00184 wr_cmd(0xB2); // set page address 2 00185 _A0 = 1; 00186 for(i=256; i<384; i++) { 00187 wr_dat(buffer[i]); 00188 } 00189 00190 //page 3 00191 wr_cmd(0x00); // set column low nibble 0 00192 wr_cmd(0x10); // set column hi nibble 0 00193 wr_cmd(0xB3); // set page address 3 00194 _A0 = 1; 00195 00196 _CS = 0; 00197 00198 for(i=384; i<512; i++) { 00199 wr_dat(buffer[i]); 00200 } 00201 00202 } 00203 00204 void C12832::cls(void) 00205 { 00206 memset(buffer,0x00,512); // clear display buffer 00207 copy_to_lcd(); 00208 } 00209 00210 00211 void C12832::line(int x0, int y0, int x1, int y1, int color) 00212 { 00213 int dx = 0, dy = 0; 00214 int dx_sym = 0, dy_sym = 0; 00215 int dx_x2 = 0, dy_x2 = 0; 00216 int di = 0; 00217 00218 dx = x1-x0; 00219 dy = y1-y0; 00220 00221 // if (dx == 0) { /* vertical line */ 00222 // if (y1 > y0) vline(x0,y0,y1,color); 00223 // else vline(x0,y1,y0,color); 00224 // return; 00225 // } 00226 00227 if (dx > 0) { 00228 dx_sym = 1; 00229 } else { 00230 dx_sym = -1; 00231 } 00232 // if (dy == 0) { /* horizontal line */ 00233 // if (x1 > x0) hline(x0,x1,y0,color); 00234 // else hline(x1,x0,y0,color); 00235 // return; 00236 // } 00237 00238 if (dy > 0) { 00239 dy_sym = 1; 00240 } else { 00241 dy_sym = -1; 00242 } 00243 00244 dx = dx_sym*dx; 00245 dy = dy_sym*dy; 00246 00247 dx_x2 = dx*2; 00248 dy_x2 = dy*2; 00249 00250 if (dx >= dy) { 00251 di = dy_x2 - dx; 00252 while (x0 != x1) { 00253 00254 pixel(x0, y0, color); 00255 x0 += dx_sym; 00256 if (di<0) { 00257 di += dy_x2; 00258 } else { 00259 di += dy_x2 - dx_x2; 00260 y0 += dy_sym; 00261 } 00262 } 00263 pixel(x0, y0, color); 00264 } else { 00265 di = dx_x2 - dy; 00266 while (y0 != y1) { 00267 pixel(x0, y0, color); 00268 y0 += dy_sym; 00269 if (di < 0) { 00270 di += dx_x2; 00271 } else { 00272 di += dx_x2 - dy_x2; 00273 x0 += dx_sym; 00274 } 00275 } 00276 pixel(x0, y0, color); 00277 } 00278 if(auto_up) copy_to_lcd(); 00279 } 00280 00281 void C12832::rect(int x0, int y0, int x1, int y1, int color) 00282 { 00283 00284 if (x1 > x0) line(x0,y0,x1,y0,color); 00285 else line(x1,y0,x0,y0,color); 00286 00287 if (y1 > y0) line(x0,y0,x0,y1,color); 00288 else line(x0,y1,x0,y0,color); 00289 00290 if (x1 > x0) line(x0,y1,x1,y1,color); 00291 else line(x1,y1,x0,y1,color); 00292 00293 if (y1 > y0) line(x1,y0,x1,y1,color); 00294 else line(x1,y1,x1,y0,color); 00295 00296 if(auto_up) copy_to_lcd(); 00297 } 00298 00299 void C12832::fillrect(int x0, int y0, int x1, int y1, int color) 00300 { 00301 int l,c,i; 00302 if(x0 > x1) { 00303 i = x0; 00304 x0 = x1; 00305 x1 = i; 00306 } 00307 00308 if(y0 > y1) { 00309 i = y0; 00310 y0 = y1; 00311 y1 = i; 00312 } 00313 00314 for(l = x0; l<= x1; l ++) { 00315 for(c = y0; c<= y1; c++) { 00316 pixel(l,c,color); 00317 } 00318 } 00319 if(auto_up) copy_to_lcd(); 00320 } 00321 00322 00323 00324 void C12832::circle(int x0, int y0, int r, int color) 00325 { 00326 00327 int draw_x0, draw_y0; 00328 int draw_x1, draw_y1; 00329 int draw_x2, draw_y2; 00330 int draw_x3, draw_y3; 00331 int draw_x4, draw_y4; 00332 int draw_x5, draw_y5; 00333 int draw_x6, draw_y6; 00334 int draw_x7, draw_y7; 00335 int xx, yy; 00336 int di; 00337 //WindowMax(); 00338 if (r == 0) { /* no radius */ 00339 return; 00340 } 00341 00342 draw_x0 = draw_x1 = x0; 00343 draw_y0 = draw_y1 = y0 + r; 00344 if (draw_y0 < height()) { 00345 pixel(draw_x0, draw_y0, color); /* 90 degree */ 00346 } 00347 00348 draw_x2 = draw_x3 = x0; 00349 draw_y2 = draw_y3 = y0 - r; 00350 if (draw_y2 >= 0) { 00351 pixel(draw_x2, draw_y2, color); /* 270 degree */ 00352 } 00353 00354 draw_x4 = draw_x6 = x0 + r; 00355 draw_y4 = draw_y6 = y0; 00356 if (draw_x4 < width()) { 00357 pixel(draw_x4, draw_y4, color); /* 0 degree */ 00358 } 00359 00360 draw_x5 = draw_x7 = x0 - r; 00361 draw_y5 = draw_y7 = y0; 00362 if (draw_x5>=0) { 00363 pixel(draw_x5, draw_y5, color); /* 180 degree */ 00364 } 00365 00366 if (r == 1) { 00367 return; 00368 } 00369 00370 di = 3 - 2*r; 00371 xx = 0; 00372 yy = r; 00373 while (xx < yy) { 00374 00375 if (di < 0) { 00376 di += 4*xx + 6; 00377 } else { 00378 di += 4*(xx - yy) + 10; 00379 yy--; 00380 draw_y0--; 00381 draw_y1--; 00382 draw_y2++; 00383 draw_y3++; 00384 draw_x4--; 00385 draw_x5++; 00386 draw_x6--; 00387 draw_x7++; 00388 } 00389 xx++; 00390 draw_x0++; 00391 draw_x1--; 00392 draw_x2++; 00393 draw_x3--; 00394 draw_y4++; 00395 draw_y5++; 00396 draw_y6--; 00397 draw_y7--; 00398 00399 if ( (draw_x0 <= width()) && (draw_y0>=0) ) { 00400 pixel(draw_x0, draw_y0, color); 00401 } 00402 00403 if ( (draw_x1 >= 0) && (draw_y1 >= 0) ) { 00404 pixel(draw_x1, draw_y1, color); 00405 } 00406 00407 if ( (draw_x2 <= width()) && (draw_y2 <= height()) ) { 00408 pixel(draw_x2, draw_y2, color); 00409 } 00410 00411 if ( (draw_x3 >=0 ) && (draw_y3 <= height()) ) { 00412 pixel(draw_x3, draw_y3, color); 00413 } 00414 00415 if ( (draw_x4 <= width()) && (draw_y4 >= 0) ) { 00416 pixel(draw_x4, draw_y4, color); 00417 } 00418 00419 if ( (draw_x5 >= 0) && (draw_y5 >= 0) ) { 00420 pixel(draw_x5, draw_y5, color); 00421 } 00422 if ( (draw_x6 <=width()) && (draw_y6 <= height()) ) { 00423 pixel(draw_x6, draw_y6, color); 00424 } 00425 if ( (draw_x7 >= 0) && (draw_y7 <= height()) ) { 00426 pixel(draw_x7, draw_y7, color); 00427 } 00428 } 00429 if(auto_up) copy_to_lcd(); 00430 } 00431 00432 void C12832::fillcircle(int x, int y, int r, int color) 00433 { 00434 int i,up; 00435 up = auto_up; 00436 auto_up = 0; // off 00437 for (i = 0; i <= r; i++) 00438 circle(x,y,i,color); 00439 auto_up = up; 00440 if(auto_up) copy_to_lcd(); 00441 } 00442 00443 void C12832::setmode(int mode) 00444 { 00445 draw_mode = mode; 00446 } 00447 00448 void C12832::locate(int x, int y) 00449 { 00450 char_x = x; 00451 char_y = y; 00452 } 00453 00454 00455 00456 int C12832::columns() 00457 { 00458 return width() / font[1]; 00459 } 00460 00461 00462 00463 int C12832::rows() 00464 { 00465 return height() / font[2]; 00466 } 00467 00468 00469 00470 int C12832::_putc(int value) 00471 { 00472 if (value == '\n') { // new line 00473 char_x = 0; 00474 char_y = char_y + font[2]; 00475 if (char_y >= height() - font[2]) { 00476 char_y = 0; 00477 } 00478 } else { 00479 character(char_x, char_y, value); 00480 if(auto_up) copy_to_lcd(); 00481 } 00482 return value; 00483 } 00484 00485 void C12832::character(int x, int y, int c) 00486 { 00487 unsigned int hor,vert,offset,bpl,j,i,b; 00488 unsigned char* zeichen; 00489 unsigned char z,w; 00490 00491 if ((c < 31) || (c > 127)) return; // test char range 00492 00493 // read font parameter from start of array 00494 offset = font[0]; // bytes / char 00495 hor = font[1]; // get hor size of font 00496 vert = font[2]; // get vert size of font 00497 bpl = font[3]; // bytes per line 00498 00499 if (char_x + hor > width()) { 00500 char_x = 0; 00501 char_y = char_y + vert; 00502 if (char_y >= height() - font[2]) { 00503 char_y = 0; 00504 } 00505 } 00506 00507 zeichen = &font[((c -32) * offset) + 4]; // start of char bitmap 00508 w = zeichen[0]; // width of actual char 00509 // construct the char into the buffer 00510 for (j=0; j<vert; j++) { // vert line 00511 for (i=0; i<hor; i++) { // horz line 00512 z = zeichen[bpl * i + ((j & 0xF8) >> 3)+1]; 00513 b = 1 << (j & 0x07); 00514 if (( z & b ) == 0x00) { 00515 pixel(x+i,y+j,0); 00516 } else { 00517 pixel(x+i,y+j,1); 00518 } 00519 00520 } 00521 } 00522 00523 char_x += w; 00524 } 00525 00526 00527 void C12832::set_font(unsigned char* f) 00528 { 00529 font = f; 00530 } 00531 00532 void C12832::set_auto_up(unsigned int up) 00533 { 00534 if(up ) auto_up = 1; 00535 else auto_up = 0; 00536 } 00537 00538 unsigned int C12832::get_auto_up(void) 00539 { 00540 return (auto_up); 00541 } 00542 00543 void C12832::print_bm(Bitmap bm, int x, int y) 00544 { 00545 int h,v,b; 00546 char d; 00547 00548 for(v=0; v < bm.ySize; v++) { // lines 00549 for(h=0; h < bm.xSize; h++) { // pixel 00550 if(h + x > 127) break; 00551 if(v + y > 31) break; 00552 d = bm.data[bm.Byte_in_Line * v + ((h & 0xF8) >> 3)]; 00553 b = 0x80 >> (h & 0x07); 00554 if((d & b) == 0) { 00555 pixel(x+h,y+v,0); 00556 } else { 00557 pixel(x+h,y+v,1); 00558 } 00559 } 00560 } 00561 00562 } 00563 00564
Generated on Thu Jul 14 2022 13:39:04 by 1.7.2