Peter Drescher
Library to control a QVGA TFT connected to SPI. You can use printf to print text The lib can handle different fonts, draw lines, circles, rect and bmp
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SPI_TFT.cpp
00001 /* mbed library for 240*320 pixel display TFT based on HX8347D LCD Controller 00002 * Copyright (c) 2011 Peter Drescher - DC2PD 00003 * 00004 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 00005 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 00006 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 00007 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 00008 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 00009 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 00010 * THE SOFTWARE. 00011 */ 00012 00013 00014 // fix bmp padding for Bitmap function 00015 // speed up pixel 00016 // 30.12.11 fix cls 00017 // 11.03.12 use DMA to speed up 00018 // 15.03.12 use SSEL for TFT CS to enable DMA Register writes 00019 // 06.04.12 fix SSEL CS problem 00020 // 06.04.12 use direct access to the spi register to speed up the library. 00021 // 11.09.12 switch back to using io pin as cs to avoid problems with SSEL CS. 00022 00023 #include "SPI_TFT.h" 00024 #include "mbed.h" 00025 00026 00027 #define BPP 16 // Bits per pixel 00028 00029 00030 //extern Serial pc; 00031 //extern DigitalOut xx; // debug !! 00032 00033 SPI_TFT::SPI_TFT(PinName mosi, PinName miso, PinName sclk, PinName cs, PinName reset, const char *name) 00034 : _spi(mosi, miso, sclk), _cs(cs), _reset(reset),GraphicsDisplay(name) { 00035 tft_reset(); 00036 orientation = 0; 00037 char_x = 0; 00038 if (mosi == p11 || mosi == P0_18) spi_port = 0; // we must know the used SPI port to setup the DMA 00039 else spi_port = 1; 00040 } 00041 00042 int SPI_TFT::width() { 00043 if (orientation == 0 || orientation == 2) return 240; 00044 else return 320; 00045 } 00046 00047 00048 int SPI_TFT::height() { 00049 if (orientation == 0 || orientation == 2) return 320; 00050 else return 240; 00051 } 00052 00053 00054 void SPI_TFT::set_orientation(unsigned int o) { 00055 orientation = o; 00056 switch (orientation) { 00057 case 0: 00058 wr_reg(0x16, 0x08); 00059 break; 00060 case 1: 00061 wr_reg(0x16, 0x68); 00062 break; 00063 case 2: 00064 wr_reg(0x16, 0xC8); 00065 break; 00066 case 3: 00067 wr_reg(0x16, 0xA8); 00068 break; 00069 } 00070 WindowMax(); 00071 } 00072 00073 00074 // write command to tft register 00075 00076 void SPI_TFT::wr_cmd(unsigned char cmd) { 00077 unsigned short spi_d; 00078 spi_d = 0x7000 | cmd ; 00079 _cs = 0; 00080 if (spi_port == 0) { // TFT on SSP0 00081 LPC_SSP0->DR = spi_d; 00082 // we have to wait for SPI IDLE to set CS back to high 00083 do { 00084 } while ((LPC_SSP0->SR & 0x10) == 0x10); // SPI0 not idle 00085 } else { 00086 LPC_SSP1->DR = spi_d; 00087 do { 00088 } while ((LPC_SSP1->SR & 0x10) == 0x10); // SPI1 not idle 00089 } 00090 _cs = 1; 00091 } 00092 00093 00094 00095 void SPI_TFT::wr_dat(unsigned char dat) { 00096 unsigned short spi_d; 00097 spi_d = 0x7200 | dat; 00098 _cs = 0; 00099 if (spi_port == 0) { // TFT on SSP0 00100 LPC_SSP0->DR = spi_d; 00101 // we have to wait for SPI IDLE to set CS back to high 00102 do { 00103 } while ((LPC_SSP0->SR & 0x10) == 0x10); // SPI0 not idle 00104 } else { 00105 LPC_SSP1->DR = spi_d; 00106 do { 00107 } while ((LPC_SSP1->SR & 0x10) == 0x10); // SPI1 not idle 00108 } 00109 _cs = 1; 00110 } 00111 00112 00113 00114 // the HX8347-D controller do not use the MISO (SDO) Signal. 00115 // This is a bug - ? 00116 // A read will return 0 at the moment 00117 00118 unsigned short SPI_TFT::rd_dat (void) { 00119 unsigned short val = 0; 00120 00121 //val = _spi.write(0x73ff); /* Dummy read 1 */ 00122 //val = _spi.write(0x0000); /* Read D8..D15 */ 00123 return (val); 00124 } 00125 00126 void SPI_TFT::wr_reg (unsigned char reg, unsigned char val) { 00127 wr_cmd(reg); 00128 wr_dat(val); 00129 } 00130 00131 unsigned short SPI_TFT::rd_reg (unsigned char reg) { 00132 wr_cmd(reg); 00133 return(rd_dat()); 00134 } 00135 00136 void SPI_TFT::tft_reset() { 00137 //static unsigned short driverCode; 00138 _spi.format(16,3); // 16 bit spi mode 3 00139 _spi.frequency(48000000); // 48 Mhz SPI clock 00140 _cs = 1; // cs high 00141 _reset = 0; // display reset 00142 // 00143 // if (spi_port == 0) { // TFT on SSP0 00144 // Set up SSEL0 for CS 00145 // LPC_PINCON->PINSEL1 |= (1UL << 1); 00146 // } else { 00147 // // Set up SSEL1 00148 // LPC_PINCON->PINSEL0 |= (1UL << 13); 00149 // } 00150 wait_us(50); 00151 _reset = 1; // end reset 00152 wait_ms(5); 00153 00154 /* Start Initial Sequence ----------------------------------------------------*/ 00155 wr_reg(0xEA, 0x00); /* Reset Power Control 1 */ 00156 wr_reg(0xEB, 0x20); /* Power Control 2 */ 00157 wr_reg(0xEC, 0x0C); /* Power Control 3 */ 00158 wr_reg(0xED, 0xC4); /* Power Control 4 */ 00159 wr_reg(0xE8, 0x40); /* Source OPON_N */ 00160 wr_reg(0xE9, 0x38); /* Source OPON_I */ 00161 wr_reg(0xF1, 0x01); /* */ 00162 wr_reg(0xF2, 0x10); /* */ 00163 wr_reg(0x27, 0xA3); /* Display Control 2 */ 00164 00165 /* Power On sequence ---------------------------------------------------------*/ 00166 wr_reg(0x1B, 0x1B); /* Power Control 2 */ 00167 wr_reg(0x1A, 0x01); /* Power Control 1 */ 00168 wr_reg(0x24, 0x2F); /* Vcom Control 2 */ 00169 wr_reg(0x25, 0x57); /* Vcom Control 3 */ 00170 wr_reg(0x23, 0x8D); /* Vcom Control 1 */ 00171 00172 /* Gamma settings -----------------------------------------------------------*/ 00173 wr_reg(0x40,0x00); // 00174 wr_reg(0x41,0x00); // 00175 wr_reg(0x42,0x01); // 00176 wr_reg(0x43,0x13); // 00177 wr_reg(0x44,0x10); // 00178 wr_reg(0x45,0x26); // 00179 wr_reg(0x46,0x08); // 00180 wr_reg(0x47,0x51); // 00181 wr_reg(0x48,0x02); // 00182 wr_reg(0x49,0x12); // 00183 wr_reg(0x4A,0x18); // 00184 wr_reg(0x4B,0x19); // 00185 wr_reg(0x4C,0x14); // 00186 wr_reg(0x50,0x19); // 00187 wr_reg(0x51,0x2F); // 00188 wr_reg(0x52,0x2C); // 00189 wr_reg(0x53,0x3E); // 00190 wr_reg(0x54,0x3F); // 00191 wr_reg(0x55,0x3F); // 00192 wr_reg(0x56,0x2E); // 00193 wr_reg(0x57,0x77); // 00194 wr_reg(0x58,0x0B); // 00195 wr_reg(0x59,0x06); // 00196 wr_reg(0x5A,0x07); // 00197 wr_reg(0x5B,0x0D); // 00198 wr_reg(0x5C,0x1D); // 00199 wr_reg(0x5D,0xCC); // 00200 00201 /* Power + Osc ---------------------------------------------------------------*/ 00202 wr_reg(0x18, 0x0036); /* OSC Control 1 */ 00203 wr_reg(0x19, 0x0001); /* OSC Control 2 */ 00204 wr_reg(0x01, 0x0000); /* Display Mode Control */ 00205 wr_reg(0x1F, 0x0088); /* Power Control 6 */ 00206 wait_ms(5); /* Delay 5 ms */ 00207 wr_reg(0x1F, 0x0080); /* Power Control 6 */ 00208 wait_ms(5); /* Delay 5 ms */ 00209 wr_reg(0x1F, 0x0090); /* Power Control 6 */ 00210 wait_ms(5); /* Delay 5 ms */ 00211 wr_reg(0x1F, 0x00D0); /* Power Control 6 */ 00212 wait_ms(5); /* Delay 5 ms */ 00213 00214 wr_reg(0x17, 0x0005); /* Colmod 16Bit/Pixel */ 00215 00216 wr_reg(0x36, 0x0000); /* Panel Characteristic */ 00217 wr_reg(0x28, 0x0038); /* Display Control 3 */ 00218 wait_ms(40); 00219 wr_reg(0x28, 0x003C); /* Display Control 3 */ 00220 switch (orientation) { 00221 case 0: 00222 wr_reg(0x16, 0x0008); 00223 break; 00224 case 1: 00225 wr_reg(0x16, 0x0068); 00226 break; 00227 case 2: 00228 wr_reg(0x16, 0x00C8); 00229 break; 00230 case 3: 00231 wr_reg(0x16, 0x00A8); 00232 break; 00233 } 00234 00235 // setup DMA channel 0 00236 // Power up the GPDMA. 00237 LPC_SC->PCONP |= (1UL << 29); 00238 LPC_GPDMA->DMACConfig = 1; // enable DMA controller 00239 // Reset the Interrupt status 00240 LPC_GPDMA->DMACIntTCClear = 0x1; 00241 LPC_GPDMA->DMACIntErrClr = 0x1; 00242 LPC_GPDMACH0->DMACCLLI = 0; 00243 00244 WindowMax (); 00245 } 00246 00247 00248 void SPI_TFT::pixel(int x, int y, int color) { 00249 unsigned char u,l; 00250 wr_reg(0x03, (x >> 0)); 00251 wr_reg(0x02, (x >> 8)); 00252 wr_reg(0x07, (y >> 0)); 00253 wr_reg(0x06, (y >> 8)); 00254 wr_cmd(0x22); 00255 u = color >> 8; 00256 l = color & 0xff; 00257 _cs = 0; 00258 if (spi_port == 0) { // TFT on SSP0 00259 LPC_SSP0->CR0 &= ~(0x08UL); // set to 8 bit 00260 LPC_SSP0->DR = 0x72; // start Data 00261 LPC_SSP0->DR = u; // high byte 00262 LPC_SSP0->DR = l; // low byte 00263 LPC_SSP0->CR0 |= 0x08UL; // set back to 16 bit 00264 // we have to wait for SPI IDLE to set CS back to high 00265 do { 00266 } while ((LPC_SSP0->SR & 0x10) == 0x10); // SPI0 not idle 00267 } else { 00268 LPC_SSP1->CR0 &= ~(0x08UL); // set to 8 bit 00269 LPC_SSP1->DR = 0x72; // start Data 00270 LPC_SSP1->DR = u; 00271 LPC_SSP1->DR = l; 00272 LPC_SSP1->CR0 |= 0x08UL; // set back to 16 bit 00273 // we have to wait for SPI IDLE to set CS back to high 00274 do { 00275 } while ((LPC_SSP1->SR & 0x10) == 0x10); // SPI1 not idle 00276 } 00277 _cs = 1; 00278 } 00279 00280 00281 void SPI_TFT::window (unsigned int x, unsigned int y, unsigned int w, unsigned int h) { 00282 wr_reg(0x03, x ); 00283 wr_reg(0x02, (x >> 8)); 00284 wr_reg(0x05, x+w-1 ); 00285 wr_reg(0x04, (x+w-1 >> 8)); 00286 wr_reg(0x07, y ); 00287 wr_reg(0x06, ( y >> 8)); 00288 wr_reg(0x09, ( y+h-1 )); 00289 wr_reg(0x08, ( y+h-1 >> 8)); 00290 } 00291 00292 00293 void SPI_TFT::WindowMax (void) { 00294 window (0, 0, width(), height()); 00295 } 00296 00297 00298 void SPI_TFT::cls (void) { 00299 //unsigned int i 00300 00301 int pixel = ( width() * height()); 00302 int dma_count; 00303 int color = _background; 00304 WindowMax(); 00305 wr_cmd(0x22); 00306 00307 // The SSEL signal is held low until the spi FIFO is emty. 00308 // We have to lower the SPI clock for the 8 bit start to get the spi running 00309 // until the next data word 00310 00311 LPC_GPDMACH0->DMACCSrcAddr = (uint32_t)&color; 00312 00313 _cs = 0; 00314 if (spi_port == 0) { // TFT on SSP0 00315 LPC_GPDMACH0->DMACCDestAddr = (uint32_t)&LPC_SSP0->DR; // we send to SSP0 00316 /* Enable SSP0 for DMA. */ 00317 LPC_SSP0->DMACR = 0x2; 00318 LPC_SSP0->CR0 &= ~(0x08UL); // set to 8 bit 00319 LPC_SSP0->DR = 0x72; // start byte 00320 LPC_SSP0->CR0 |= 0x08UL; // set to 16 bit 00321 } else { 00322 LPC_GPDMACH0->DMACCDestAddr = (uint32_t)&LPC_SSP1->DR; // we send to SSP1 00323 /* Enable SSP1 for DMA. */ 00324 LPC_SSP1->DMACR = 0x2; 00325 LPC_SSP1->CR0 &= ~(0x08UL); // set to 8 bit 00326 LPC_SSP1->DR = 0x72; // start Data 00327 LPC_SSP1->CR0 |= 0x08UL; // set to 16 bit 00328 } 00329 00330 // start DMA 00331 do { 00332 if (pixel > 4095) { 00333 dma_count = 4095; 00334 pixel = pixel - 4095; 00335 } else { 00336 dma_count = pixel; 00337 pixel = 0; 00338 } 00339 LPC_GPDMA->DMACIntTCClear = 0x1; 00340 LPC_GPDMA->DMACIntErrClr = 0x1; 00341 LPC_GPDMACH0->DMACCControl = dma_count | (1UL << 18) | (1UL << 21) | (1UL << 31) ; // 16 bit transfer , no address increment, interrupt 00342 LPC_GPDMACH0->DMACCConfig = DMA_CHANNEL_ENABLE | DMA_TRANSFER_TYPE_M2P ; 00343 LPC_GPDMA->DMACSoftSReq = 0x1; // DMA request 00344 00345 do { 00346 } while ((LPC_GPDMA->DMACRawIntTCStat & 0x01) == 0); // DMA is running 00347 00348 } while (pixel > 0); 00349 if (spi_port == 0) { // TFT on SSP0 00350 do { 00351 } while ((0x0010 & LPC_SSP0->SR) == 0x10); // SPI FIFO not empty 00352 /* disable SSP0 for DMA. */ 00353 LPC_SSP0->DMACR = 0x0; 00354 } else { 00355 do { 00356 } while ((0x0010 & LPC_SSP1->SR) == 0x10); // SPI FIFO not empty 00357 /* disable SSP1 for DMA. */ 00358 LPC_SSP1->DMACR = 0x0; 00359 } 00360 _cs = 1; 00361 } 00362 00363 00364 void SPI_TFT::circle(int x0, int y0, int r, int color) { 00365 00366 int draw_x0, draw_y0; 00367 int draw_x1, draw_y1; 00368 int draw_x2, draw_y2; 00369 int draw_x3, draw_y3; 00370 int draw_x4, draw_y4; 00371 int draw_x5, draw_y5; 00372 int draw_x6, draw_y6; 00373 int draw_x7, draw_y7; 00374 int xx, yy; 00375 int di; 00376 //WindowMax(); 00377 if (r == 0) { /* no radius */ 00378 return; 00379 } 00380 00381 draw_x0 = draw_x1 = x0; 00382 draw_y0 = draw_y1 = y0 + r; 00383 if (draw_y0 < height()) { 00384 pixel(draw_x0, draw_y0, color); /* 90 degree */ 00385 } 00386 00387 draw_x2 = draw_x3 = x0; 00388 draw_y2 = draw_y3 = y0 - r; 00389 if (draw_y2 >= 0) { 00390 pixel(draw_x2, draw_y2, color); /* 270 degree */ 00391 } 00392 00393 draw_x4 = draw_x6 = x0 + r; 00394 draw_y4 = draw_y6 = y0; 00395 if (draw_x4 < width()) { 00396 pixel(draw_x4, draw_y4, color); /* 0 degree */ 00397 } 00398 00399 draw_x5 = draw_x7 = x0 - r; 00400 draw_y5 = draw_y7 = y0; 00401 if (draw_x5>=0) { 00402 pixel(draw_x5, draw_y5, color); /* 180 degree */ 00403 } 00404 00405 if (r == 1) { 00406 return; 00407 } 00408 00409 di = 3 - 2*r; 00410 xx = 0; 00411 yy = r; 00412 while (xx < yy) { 00413 00414 if (di < 0) { 00415 di += 4*xx + 6; 00416 } else { 00417 di += 4*(xx - yy) + 10; 00418 yy--; 00419 draw_y0--; 00420 draw_y1--; 00421 draw_y2++; 00422 draw_y3++; 00423 draw_x4--; 00424 draw_x5++; 00425 draw_x6--; 00426 draw_x7++; 00427 } 00428 xx++; 00429 draw_x0++; 00430 draw_x1--; 00431 draw_x2++; 00432 draw_x3--; 00433 draw_y4++; 00434 draw_y5++; 00435 draw_y6--; 00436 draw_y7--; 00437 00438 if ( (draw_x0 <= width()) && (draw_y0>=0) ) { 00439 pixel(draw_x0, draw_y0, color); 00440 } 00441 00442 if ( (draw_x1 >= 0) && (draw_y1 >= 0) ) { 00443 pixel(draw_x1, draw_y1, color); 00444 } 00445 00446 if ( (draw_x2 <= width()) && (draw_y2 <= height()) ) { 00447 pixel(draw_x2, draw_y2, color); 00448 } 00449 00450 if ( (draw_x3 >=0 ) && (draw_y3 <= height()) ) { 00451 pixel(draw_x3, draw_y3, color); 00452 } 00453 00454 if ( (draw_x4 <= width()) && (draw_y4 >= 0) ) { 00455 pixel(draw_x4, draw_y4, color); 00456 } 00457 00458 if ( (draw_x5 >= 0) && (draw_y5 >= 0) ) { 00459 pixel(draw_x5, draw_y5, color); 00460 } 00461 if ( (draw_x6 <=width()) && (draw_y6 <= height()) ) { 00462 pixel(draw_x6, draw_y6, color); 00463 } 00464 if ( (draw_x7 >= 0) && (draw_y7 <= height()) ) { 00465 pixel(draw_x7, draw_y7, color); 00466 } 00467 } 00468 return; 00469 } 00470 00471 void SPI_TFT::fillcircle(int x, int y, int r, int color) { 00472 int i; 00473 for (i = 0; i <= r; i++) 00474 circle(x,y,i,color); 00475 } 00476 00477 00478 00479 void SPI_TFT::hline(int x0, int x1, int y, int color) { 00480 int w; 00481 w = x1 - x0 + 1; 00482 window(x0,y,w,1); 00483 wr_cmd(0x22); 00484 _cs = 0; 00485 if (spi_port == 0) { // TFT on SSP0 00486 LPC_GPDMACH0->DMACCDestAddr = (uint32_t)&LPC_SSP0->DR; // we send to SSP0 00487 /* Enable SSP0 for DMA. */ 00488 LPC_SSP0->DMACR = 0x2; 00489 LPC_SSP0->CR0 &= ~(0x08UL); // set to 8 bit 00490 LPC_SSP0->DR = 0x72; // start Data 00491 LPC_SSP0->CR0 |= 0x08UL; // set to 16 bit 00492 } else { 00493 LPC_GPDMACH0->DMACCDestAddr = (uint32_t)&LPC_SSP1->DR; // we send to SSP1 00494 /* Enable SSP1 for DMA. */ 00495 LPC_SSP1->DMACR = 0x2; 00496 LPC_SSP1->CR0 &= ~(0x08UL); // set to 8 bit 00497 LPC_SSP1->DR = 0x72; // start Data 00498 LPC_SSP1->CR0 |= 0x08UL; // set to 16 bit 00499 } 00500 00501 LPC_GPDMA->DMACIntTCClear = 0x1; 00502 LPC_GPDMA->DMACIntErrClr = 0x1; 00503 LPC_GPDMACH0->DMACCSrcAddr = (uint32_t)&color; 00504 LPC_GPDMACH0->DMACCControl = w | (1UL << 18) | (1UL << 21) | (1UL << 31) ; // 16 bit transfer , no address increment, interrupt 00505 LPC_GPDMACH0->DMACCConfig = DMA_CHANNEL_ENABLE | DMA_TRANSFER_TYPE_M2P ; 00506 LPC_GPDMA->DMACSoftSReq = 0x1; // start DMA 00507 do { 00508 } while ((LPC_GPDMA->DMACRawIntTCStat & 0x01) == 0); // DMA is running 00509 if (spi_port == 0) { // TFT on SSP0 00510 do { 00511 } while ((LPC_SSP0->SR & 0x10) == 0x10); // SPI FIFO not empty 00512 } else { 00513 do { 00514 } while ((LPC_SSP1->SR & 0x10) == 0x10); // SPI FIFO not empty 00515 } 00516 _cs = 1; 00517 WindowMax(); 00518 return; 00519 } 00520 00521 void SPI_TFT::vline(int x, int y0, int y1, int color) { 00522 int h; 00523 h = y1 - y0 + 1; 00524 window(x,y0,1,h); 00525 wr_cmd(0x22); 00526 _cs = 0; 00527 if (spi_port == 0) { // TFT on SSP0 00528 LPC_GPDMACH0->DMACCDestAddr = (uint32_t)&LPC_SSP0->DR; // we send to SSP0 00529 /* Enable SSP0 for DMA. */ 00530 LPC_SSP0->DMACR = 0x2; 00531 LPC_SSP0->CR0 &= ~(0x08UL); // set to 8 bit 00532 LPC_SSP0->DR = 0x72; // start Data 00533 LPC_SSP0->CR0 |= 0x08UL; // set to 16 bit 00534 } else { 00535 LPC_GPDMACH0->DMACCDestAddr = (uint32_t)&LPC_SSP1->DR; // we send to SSP1 00536 /* Enable SSP1 for DMA. */ 00537 LPC_SSP1->DMACR = 0x2; 00538 LPC_SSP1->CR0 &= ~(0x08UL); // set to 8 bit 00539 LPC_SSP1->DR = 0x72; // start Data 00540 LPC_SSP1->CR0 |= 0x08UL; // set to 16 bit 00541 } 00542 00543 LPC_GPDMA->DMACIntTCClear = 0x1; 00544 LPC_GPDMA->DMACIntErrClr = 0x1; 00545 LPC_GPDMACH0->DMACCSrcAddr = (uint32_t)&color; 00546 LPC_GPDMACH0->DMACCControl = h | (1UL << 18) | (1UL << 21) | (1UL << 31) ; // 16 bit transfer , no address increment, interrupt 00547 LPC_GPDMACH0->DMACCConfig = DMA_CHANNEL_ENABLE | DMA_TRANSFER_TYPE_M2P ; 00548 LPC_GPDMA->DMACSoftSReq = 0x1; 00549 do { 00550 } while ((LPC_GPDMA->DMACRawIntTCStat & 0x01) == 0); // DMA is running 00551 00552 if (spi_port == 0) { // TFT on SSP0 00553 do { 00554 } while ((LPC_SSP0->SR & 0x10) == 0x10); // SPI FIFO not empty 00555 } else { 00556 do { 00557 } while ((LPC_SSP1->SR & 0x10) == 0x10); // SPI FIFO not empty 00558 } 00559 _cs = 1; 00560 WindowMax(); 00561 return; 00562 } 00563 00564 00565 00566 void SPI_TFT::line(int x0, int y0, int x1, int y1, int color) { 00567 //WindowMax(); 00568 int dx = 0, dy = 0; 00569 int dx_sym = 0, dy_sym = 0; 00570 int dx_x2 = 0, dy_x2 = 0; 00571 int di = 0; 00572 00573 dx = x1-x0; 00574 dy = y1-y0; 00575 00576 if (dx == 0) { /* vertical line */ 00577 if (y1 > y0) vline(x0,y0,y1,color); 00578 else vline(x0,y1,y0,color); 00579 return; 00580 } 00581 00582 if (dx > 0) { 00583 dx_sym = 1; 00584 } else { 00585 dx_sym = -1; 00586 } 00587 if (dy == 0) { /* horizontal line */ 00588 if (x1 > x0) hline(x0,x1,y0,color); 00589 else hline(x1,x0,y0,color); 00590 return; 00591 } 00592 00593 if (dy > 0) { 00594 dy_sym = 1; 00595 } else { 00596 dy_sym = -1; 00597 } 00598 00599 dx = dx_sym*dx; 00600 dy = dy_sym*dy; 00601 00602 dx_x2 = dx*2; 00603 dy_x2 = dy*2; 00604 00605 if (dx >= dy) { 00606 di = dy_x2 - dx; 00607 while (x0 != x1) { 00608 00609 pixel(x0, y0, color); 00610 x0 += dx_sym; 00611 if (di<0) { 00612 di += dy_x2; 00613 } else { 00614 di += dy_x2 - dx_x2; 00615 y0 += dy_sym; 00616 } 00617 } 00618 pixel(x0, y0, color); 00619 } else { 00620 di = dx_x2 - dy; 00621 while (y0 != y1) { 00622 pixel(x0, y0, color); 00623 y0 += dy_sym; 00624 if (di < 0) { 00625 di += dx_x2; 00626 } else { 00627 di += dx_x2 - dy_x2; 00628 x0 += dx_sym; 00629 } 00630 } 00631 pixel(x0, y0, color); 00632 } 00633 return; 00634 } 00635 00636 00637 void SPI_TFT::rect(int x0, int y0, int x1, int y1, int color) { 00638 00639 if (x1 > x0) hline(x0,x1,y0,color); 00640 else hline(x1,x0,y0,color); 00641 00642 if (y1 > y0) vline(x0,y0,y1,color); 00643 else vline(x0,y1,y0,color); 00644 00645 if (x1 > x0) hline(x0,x1,y1,color); 00646 else hline(x1,x0,y1,color); 00647 00648 if (y1 > y0) vline(x1,y0,y1,color); 00649 else vline(x1,y1,y0,color); 00650 00651 return; 00652 } 00653 00654 00655 00656 void SPI_TFT::fillrect(int x0, int y0, int x1, int y1, int color) { 00657 00658 int h = y1 - y0 + 1; 00659 int w = x1 - x0 + 1; 00660 int pixel = h * w; 00661 int dma_count; 00662 window(x0,y0,w,h); 00663 wr_cmd(0x22); 00664 _cs = 0; 00665 if (spi_port == 0) { // TFT on SSP0 00666 LPC_GPDMACH0->DMACCDestAddr = (uint32_t)&LPC_SSP0->DR; // we send to SSP0 00667 /* Enable SSP0 for DMA. */ 00668 LPC_SSP0->DMACR = 0x2; 00669 LPC_SSP0->CR0 &= ~(0x08UL); // set to 8 bit 00670 LPC_SSP0->DR = 0x72; // start Data 00671 LPC_SSP0->CR0 |= 0x08UL; // set to 16 bit 00672 } else { 00673 LPC_GPDMACH0->DMACCDestAddr = (uint32_t)&LPC_SSP1->DR; // we send to SSP1 00674 /* Enable SSP1 for DMA. */ 00675 LPC_SSP1->DMACR = 0x2; 00676 LPC_SSP1->CR0 &= ~(0x08UL); // set to 8 bit 00677 LPC_SSP1->DR = 0x72; // start Data 00678 LPC_SSP1->CR0 |= 0x08UL; // set to 16 bit 00679 } 00680 00681 do { 00682 if (pixel > 4095) { 00683 dma_count = 4095; 00684 pixel = pixel - 4095; 00685 } else { 00686 dma_count = pixel; 00687 pixel = 0; 00688 } 00689 LPC_GPDMA->DMACIntTCClear = 0x1; 00690 LPC_GPDMA->DMACIntErrClr = 0x1; 00691 LPC_GPDMACH0->DMACCSrcAddr = (uint32_t)&color; 00692 LPC_GPDMACH0->DMACCControl = dma_count | (1UL << 18) | (1UL << 21) | (1UL << 31) ; // 16 bit transfer , no address increment, interrupt 00693 LPC_GPDMACH0->DMACCConfig = DMA_CHANNEL_ENABLE | DMA_TRANSFER_TYPE_M2P ; 00694 LPC_GPDMA->DMACSoftSReq = 0x1; 00695 do { 00696 } while ((LPC_GPDMA->DMACRawIntTCStat & 0x01) == 0); // DMA is running 00697 00698 } while (pixel > 0); 00699 00700 if (spi_port == 0) { // TFT on SSP0 00701 do { 00702 } while ((LPC_SSP0->SR & 0x10) == 0x10); // SPI FIFO not empty 00703 } else { 00704 do { 00705 } while ((LPC_SSP1->SR & 0x10) == 0x10); // SPI FIFO not empty 00706 } 00707 _cs = 1; 00708 WindowMax(); 00709 return; 00710 } 00711 00712 00713 void SPI_TFT::locate(int x, int y) { 00714 char_x = x; 00715 char_y = y; 00716 } 00717 00718 00719 00720 int SPI_TFT::columns() { 00721 return width() / font[1]; 00722 } 00723 00724 00725 00726 int SPI_TFT::rows() { 00727 return height() / font[2]; 00728 } 00729 00730 00731 00732 int SPI_TFT::_putc(int value) { 00733 if (value == '\n') { // new line 00734 char_x = 0; 00735 char_y = char_y + font[2]; 00736 if (char_y >= height() - font[2]) { 00737 char_y = 0; 00738 } 00739 } else { 00740 character(char_x, char_y, value); 00741 } 00742 return value; 00743 } 00744 00745 00746 00747 00748 void SPI_TFT::character(int x, int y, int c) { 00749 unsigned int hor,vert,offset,bpl,j,i,b,p; 00750 unsigned char* zeichen; 00751 unsigned char z,w; 00752 unsigned int pixel; 00753 unsigned int dma_count,dma_off; 00754 uint16_t *buffer; 00755 00756 if ((c < 31) || (c > 127)) return; // test char range 00757 00758 // read font parameter from start of array 00759 offset = font[0]; // bytes / char 00760 hor = font[1]; // get hor size of font 00761 vert = font[2]; // get vert size of font 00762 bpl = font[3]; // bytes per line 00763 00764 if (char_x + hor > width()) { 00765 char_x = 0; 00766 char_y = char_y + vert; 00767 if (char_y >= height() - font[2]) { 00768 char_y = 0; 00769 } 00770 } 00771 window(char_x, char_y,hor,vert); // char box 00772 wr_cmd(0x22); 00773 00774 pixel = hor * vert; // calculate buffer size 00775 00776 buffer = (uint16_t *) malloc (2*pixel); // we need a buffer for the 16 bit 00777 if (buffer == NULL) { 00778 //led = 1; 00779 //pc.printf("Malloc error !\n\r"); 00780 return; // error no memory 00781 } 00782 00783 zeichen = &font[((c -32) * offset) + 4]; // start of char bitmap 00784 w = zeichen[0]; // width of actual char 00785 p = 0; 00786 // construct the char into the buffer 00787 for (j=0; j<vert; j++) { // vert line 00788 for (i=0; i<hor; i++) { // horz line 00789 z = zeichen[bpl * i + ((j & 0xF8) >> 3)+1]; 00790 b = 1 << (j & 0x07); 00791 if (( z & b ) == 0x00) { 00792 buffer[p] = _background; 00793 } else { 00794 buffer[p] = _foreground; 00795 } 00796 p++; 00797 } 00798 } 00799 00800 00801 // copy the buffer with DMA SPI to display 00802 dma_off = 0; // offset for DMA transfer 00803 _cs = 0; 00804 if (spi_port == 0) { // TFT on SSP0 00805 LPC_GPDMACH0->DMACCDestAddr = (uint32_t)&LPC_SSP0->DR; // we send to SSP0 00806 /* Enable SSP0 for DMA. */ 00807 LPC_SSP0->DMACR = 0x2; 00808 LPC_SSP0->CR0 &= ~(0x08UL); // set to 8 bit 00809 LPC_SSP0->DR = 0x72; // start Data 00810 LPC_SSP0->CR0 |= 0x08UL; // set to 16 bit 00811 } else { 00812 LPC_GPDMACH0->DMACCDestAddr = (uint32_t)&LPC_SSP1->DR; // we send to SSP1 00813 /* Enable SSP1 for DMA. */ 00814 LPC_SSP1->DMACR = 0x2; 00815 LPC_SSP1->CR0 &= ~(0x08UL); // set to 8 bit 00816 LPC_SSP1->DR = 0x72; // start Data 00817 LPC_SSP1->CR0 |= 0x08UL; // set to 16 bit 00818 } 00819 00820 // start DMA 00821 do { 00822 if (pixel > 4095) { // this is a giant font ! 00823 dma_count = 4095; 00824 pixel = pixel - 4095; 00825 } else { 00826 dma_count = pixel; 00827 pixel = 0; 00828 } 00829 LPC_GPDMA->DMACIntTCClear = 0x1; 00830 LPC_GPDMA->DMACIntErrClr = 0x1; 00831 LPC_GPDMACH0->DMACCSrcAddr = (uint32_t) (buffer + dma_off); 00832 LPC_GPDMACH0->DMACCControl = dma_count | (1UL << 18) | (1UL << 21) | (1UL << 31) | DMA_CHANNEL_SRC_INC ; // 16 bit transfer , address increment, interrupt 00833 LPC_GPDMACH0->DMACCConfig = DMA_CHANNEL_ENABLE | DMA_TRANSFER_TYPE_M2P ; 00834 LPC_GPDMA->DMACSoftSReq = 0x1; 00835 do { 00836 } while ((LPC_GPDMA->DMACRawIntTCStat & 0x01) == 0); // DMA is running 00837 dma_off = dma_off + dma_count; 00838 } while (pixel > 0); 00839 00840 free ((uint16_t *) buffer); 00841 00842 if (spi_port == 0) { // TFT on SSP0 00843 do { 00844 } while ((LPC_SSP0->SR & 0x10) == 0x10); // SPI0 not idle 00845 /* disable SSP0 for DMA. */ 00846 LPC_SSP0->DMACR = 0x0; 00847 } else { 00848 do { 00849 } while ((LPC_SSP1->SR & 0x10) == 0x10); // SPI1 not idle 00850 /* disable SSP1 for DMA. */ 00851 LPC_SSP1->DMACR = 0x0; 00852 } 00853 _cs = 1; 00854 WindowMax(); 00855 if ((w + 2) < hor) { // x offset to next char 00856 char_x += w + 2; 00857 } else char_x += hor; 00858 00859 } 00860 00861 00862 void SPI_TFT::set_font(unsigned char* f) { 00863 font = f; 00864 } 00865 00866 00867 00868 void SPI_TFT::Bitmap(unsigned int x, unsigned int y, unsigned int w, unsigned int h,unsigned char *bitmap) { 00869 unsigned int j; 00870 int padd; 00871 unsigned short *bitmap_ptr = (unsigned short *)bitmap; 00872 // the lines are padded to multiple of 4 bytes in a bitmap 00873 padd = -1; 00874 do { 00875 padd ++; 00876 } while (2*(w + padd)%4 != 0); 00877 window(x, y, w, h); 00878 wr_cmd(0x22); 00879 _cs = 0; 00880 if (spi_port == 0) { // TFT on SSP0 00881 LPC_GPDMACH0->DMACCDestAddr = (uint32_t)&LPC_SSP0->DR; // we send to SSP0 00882 /* Enable SSP0 for DMA. */ 00883 LPC_SSP0->DMACR = 0x2; 00884 LPC_SSP0->CR0 &= ~(0x08UL); // set to 8 bit 00885 LPC_SSP0->DR = 0x72; // start Data 00886 LPC_SSP0->CR0 |= 0x08UL; // set to 16 bit 00887 } else { 00888 LPC_GPDMACH0->DMACCDestAddr = (uint32_t)&LPC_SSP1->DR; // we send to SSP1 00889 /* Enable SSP1 for DMA. */ 00890 LPC_SSP1->DMACR = 0x2; 00891 LPC_SSP1->CR0 &= ~(0x08UL); // set to 8 bit 00892 LPC_SSP1->DR = 0x72; // start Data 00893 LPC_SSP1->CR0 |= 0x08UL; // set to 16 bit 00894 } 00895 bitmap_ptr += ((h - 1)* (w + padd)); 00896 for (j = 0; j < h; j++) { //Lines 00897 LPC_GPDMA->DMACIntTCClear = 0x1; 00898 LPC_GPDMA->DMACIntErrClr = 0x1; 00899 LPC_GPDMACH0->DMACCSrcAddr = (uint32_t)bitmap_ptr; 00900 LPC_GPDMACH0->DMACCControl = w | (1UL << 18) | (1UL << 21) | (1UL << 31) | DMA_CHANNEL_SRC_INC ; // 16 bit transfer , address increment, interrupt 00901 LPC_GPDMACH0->DMACCConfig = DMA_CHANNEL_ENABLE | DMA_TRANSFER_TYPE_M2P ; 00902 LPC_GPDMA->DMACSoftSReq = 0x1; 00903 do { 00904 } while ((LPC_GPDMA->DMACRawIntTCStat & 0x01) == 0); // DMA is running 00905 00906 bitmap_ptr -= w; 00907 bitmap_ptr -= padd; 00908 } 00909 00910 if (spi_port == 0) { // TFT on SSP0 00911 do { 00912 } while ((LPC_SSP0->SR & 0x10) == 0x10); // SPI FIFO not empty 00913 } else { 00914 do { 00915 } while ((LPC_SSP1->SR & 0x10) == 0x10); // SPI FIFO not empty 00916 } 00917 _cs = 1; 00918 WindowMax(); 00919 } 00920 00921 00922 int SPI_TFT::BMP_16(unsigned int x, unsigned int y, const char *Name_BMP) { 00923 00924 #define OffsetPixelWidth 18 00925 #define OffsetPixelHeigh 22 00926 #define OffsetFileSize 34 00927 #define OffsetPixData 10 00928 #define OffsetBPP 28 00929 00930 char filename[50]; 00931 unsigned char BMP_Header[54]; 00932 unsigned short BPP_t; 00933 unsigned int PixelWidth,PixelHeigh,start_data; 00934 unsigned int i,off; 00935 int padd,j; 00936 unsigned short *line; 00937 00938 // get the filename 00939 LocalFileSystem local("local"); 00940 sprintf(&filename[0],"/local/"); 00941 i=7; 00942 while (*Name_BMP!='\0') { 00943 filename[i++]=*Name_BMP++; 00944 } 00945 00946 fprintf(stderr, "filename : %s \n\r",filename); 00947 00948 FILE *Image = fopen((const char *)&filename[0], "r"); // open the bmp file 00949 if (!Image) { 00950 return(0); // error file not found ! 00951 } 00952 00953 fread(&BMP_Header[0],1,54,Image); // get the BMP Header 00954 00955 if (BMP_Header[0] != 0x42 || BMP_Header[1] != 0x4D) { // check magic byte 00956 fclose(Image); 00957 return(-1); // error no BMP file 00958 } 00959 00960 BPP_t = BMP_Header[OffsetBPP] + (BMP_Header[OffsetBPP + 1] << 8); 00961 if (BPP_t != 0x0010) { 00962 fclose(Image); 00963 return(-2); // error no 16 bit BMP 00964 } 00965 00966 PixelHeigh = BMP_Header[OffsetPixelHeigh] + (BMP_Header[OffsetPixelHeigh + 1] << 8) + (BMP_Header[OffsetPixelHeigh + 2] << 16) + (BMP_Header[OffsetPixelHeigh + 3] << 24); 00967 PixelWidth = BMP_Header[OffsetPixelWidth] + (BMP_Header[OffsetPixelWidth + 1] << 8) + (BMP_Header[OffsetPixelWidth + 2] << 16) + (BMP_Header[OffsetPixelWidth + 3] << 24); 00968 if (PixelHeigh > height() + y || PixelWidth > width() + x) { 00969 fclose(Image); 00970 return(-3); // to big 00971 } 00972 00973 start_data = BMP_Header[OffsetPixData] + (BMP_Header[OffsetPixData + 1] << 8) + (BMP_Header[OffsetPixData + 2] << 16) + (BMP_Header[OffsetPixData + 3] << 24); 00974 00975 line = (unsigned short *) malloc (2 * PixelWidth); // we need a buffer for a line 00976 if (line == NULL) { 00977 return(-4); // error no memory 00978 } 00979 00980 // the bmp lines are padded to multiple of 4 bytes 00981 padd = -1; 00982 do { 00983 padd ++; 00984 } while ((PixelWidth * 2 + padd)%4 != 0); 00985 00986 window(x, y,PixelWidth+1,PixelHeigh); 00987 wr_cmd(0x22); 00988 _cs = 0; 00989 for (j = PixelHeigh - 1; j >= 0; j--) { //Lines bottom up 00990 off = j * (PixelWidth * 2 + padd) + start_data; // start of line 00991 fseek(Image, off ,SEEK_SET); 00992 fread(line,1,PixelWidth * 2,Image); // read a line - slow ! 00993 if (spi_port == 0) { // TFT on SSP0 00994 LPC_GPDMACH0->DMACCDestAddr = (uint32_t)&LPC_SSP0->DR; // we send to SSP0 00995 /* Enable SSP0 for DMA. */ 00996 LPC_SSP0->DMACR = 0x2; 00997 LPC_SSP0->CR0 &= ~(0x08UL); // set to 8 bit 00998 LPC_SSP0->DR = 0x72; // start Data 00999 LPC_SSP0->CR0 |= 0x08UL; // set to 16 bit 01000 } else { 01001 LPC_GPDMACH0->DMACCDestAddr = (uint32_t)&LPC_SSP1->DR; // we send to SSP1 01002 /* Enable SSP1 for DMA. */ 01003 LPC_SSP1->DMACR = 0x2; 01004 LPC_SSP1->CR0 &= ~(0x08UL); // set to 8 bit 01005 LPC_SSP1->DR = 0x72; // start Data 01006 LPC_SSP1->CR0 |= 0x08UL; // set to 16 bit 01007 } 01008 01009 LPC_GPDMA->DMACIntTCClear = 0x1; 01010 LPC_GPDMA->DMACIntErrClr = 0x1; 01011 LPC_GPDMACH0->DMACCSrcAddr = (uint32_t)line; 01012 LPC_GPDMACH0->DMACCControl = PixelWidth | (1UL << 18) | (1UL << 21) | (1UL << 31) | DMA_CHANNEL_SRC_INC ; // 16 bit transfer , address increment, interrupt 01013 LPC_GPDMACH0->DMACCConfig = DMA_CHANNEL_ENABLE | DMA_TRANSFER_TYPE_M2P ; 01014 LPC_GPDMA->DMACSoftSReq = 0x1; 01015 do { 01016 } while ((LPC_GPDMA->DMACRawIntTCStat & 0x01) == 0); // DMA is running 01017 01018 } 01019 01020 if (spi_port == 0) { // TFT on SSP0 01021 do { 01022 } while ((LPC_SSP0->SR & 0x10) == 0x10); // SPI FIFO not empty 01023 } else { 01024 do { 01025 } while ((LPC_SSP1->SR & 0x10) == 0x10); // SPI FIFO not empty 01026 } 01027 _cs = 1; 01028 free (line); 01029 fclose(Image); 01030 WindowMax(); 01031 return(1); 01032 }
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