Stepan Smejkal / SPI_TFT_ILI9341

Lib for the new LCD Display with ILI9341 controller

SPI_TFT_ILI9341_NXP.cpp@13:b2b3e5430f81, 2014-06-25 (annotated)

Committer:
dreschpe
Date:
Wed Jun 25 16:51:27 2014 +0000
Revision:
13:b2b3e5430f81
add fast LPC1768 version

Who changed what in which revision?

UserRevisionLine numberNew contents of line
dreschpe 13:b2b3e5430f81 1 /* mbed library for 240*320 pixel display TFT based on ILI9341 LCD Controller
dreschpe 13:b2b3e5430f81 2 * Copyright (c) 2014 Peter Drescher - DC2PD
dreschpe 13:b2b3e5430f81 3 * Special version for NXP LPC1768
dreschpe 13:b2b3e5430f81 4 *
dreschpe 13:b2b3e5430f81 5 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
dreschpe 13:b2b3e5430f81 6 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
dreschpe 13:b2b3e5430f81 7 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
dreschpe 13:b2b3e5430f81 8 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
dreschpe 13:b2b3e5430f81 9 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
dreschpe 13:b2b3e5430f81 10 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
dreschpe 13:b2b3e5430f81 11 * THE SOFTWARE.
dreschpe 13:b2b3e5430f81 12 */
dreschpe 13:b2b3e5430f81 13
dreschpe 13:b2b3e5430f81 14 // 25.06.14 initial version
dreschpe 13:b2b3e5430f81 15
dreschpe 13:b2b3e5430f81 16 // only include this file if target is LPC1768
dreschpe 13:b2b3e5430f81 17 #if defined TARGET_LPC1768
dreschpe 13:b2b3e5430f81 18
dreschpe 13:b2b3e5430f81 19 #include "SPI_TFT_ILI9341.h"
dreschpe 13:b2b3e5430f81 20 #include "mbed.h"
dreschpe 13:b2b3e5430f81 21
dreschpe 13:b2b3e5430f81 22 #if defined TARGET_LPC1768
dreschpe 13:b2b3e5430f81 23 #define use_ram
dreschpe 13:b2b3e5430f81 24 #endif
dreschpe 13:b2b3e5430f81 25
dreschpe 13:b2b3e5430f81 26 // some defines for the DMA use
dreschpe 13:b2b3e5430f81 27 #define DMA_CHANNEL_ENABLE 1
dreschpe 13:b2b3e5430f81 28 #define DMA_TRANSFER_TYPE_M2P (1UL << 11)
dreschpe 13:b2b3e5430f81 29 #define DMA_CHANNEL_TCIE (1UL << 31)
dreschpe 13:b2b3e5430f81 30 #define DMA_CHANNEL_SRC_INC (1UL << 26)
dreschpe 13:b2b3e5430f81 31 #define DMA_MASK_IE (1UL << 14)
dreschpe 13:b2b3e5430f81 32 #define DMA_MASK_ITC (1UL << 15)
dreschpe 13:b2b3e5430f81 33 #define DMA_SSP1_TX (1UL << 2)
dreschpe 13:b2b3e5430f81 34 #define DMA_SSP0_TX (0)
dreschpe 13:b2b3e5430f81 35 #define DMA_DEST_SSP1_TX (2UL << 6)
dreschpe 13:b2b3e5430f81 36 #define DMA_DEST_SSP0_TX (0UL << 6)
dreschpe 13:b2b3e5430f81 37
dreschpe 13:b2b3e5430f81 38 #define BPP 16 // Bits per pixel
dreschpe 13:b2b3e5430f81 39
dreschpe 13:b2b3e5430f81 40 //extern Serial pc;
dreschpe 13:b2b3e5430f81 41 //extern DigitalOut xx; // debug !!
dreschpe 13:b2b3e5430f81 42
dreschpe 13:b2b3e5430f81 43
dreschpe 13:b2b3e5430f81 44 SPI_TFT_ILI9341::SPI_TFT_ILI9341(PinName mosi, PinName miso, PinName sclk, PinName cs, PinName reset, PinName dc, const char *name)
dreschpe 13:b2b3e5430f81 45 : GraphicsDisplay(name), SPI(mosi,miso,sclk), _cs(cs), _reset(reset), _dc(dc)
dreschpe 13:b2b3e5430f81 46 {
dreschpe 13:b2b3e5430f81 47
dreschpe 13:b2b3e5430f81 48 format(8,3); // 8 bit spi mode 3
dreschpe 13:b2b3e5430f81 49 frequency(10000000); // 10 Mhz SPI clock : result 2 / 4 = 8
dreschpe 13:b2b3e5430f81 50 orientation = 0;
dreschpe 13:b2b3e5430f81 51 char_x = 0;
dreschpe 13:b2b3e5430f81 52 if((int)_spi.spi == SPI_0) { // test which SPI is in use
dreschpe 13:b2b3e5430f81 53 spi_num = 0;
dreschpe 13:b2b3e5430f81 54 }
dreschpe 13:b2b3e5430f81 55 if((int)_spi.spi == SPI_1) {
dreschpe 13:b2b3e5430f81 56 spi_num = 1;
dreschpe 13:b2b3e5430f81 57 }
dreschpe 13:b2b3e5430f81 58 tft_reset();
dreschpe 13:b2b3e5430f81 59 }
dreschpe 13:b2b3e5430f81 60
dreschpe 13:b2b3e5430f81 61 // we define a fast write to the SPI port
dreschpe 13:b2b3e5430f81 62 void inline SPI_TFT_ILI9341::f_write(int data)
dreschpe 13:b2b3e5430f81 63 {
dreschpe 13:b2b3e5430f81 64 while(((_spi.spi->SR) & 0x02) == 0);
dreschpe 13:b2b3e5430f81 65 _spi.spi->DR = data;
dreschpe 13:b2b3e5430f81 66 }
dreschpe 13:b2b3e5430f81 67
dreschpe 13:b2b3e5430f81 68 // wait for SPI not busy
dreschpe 13:b2b3e5430f81 69 // we have to wait for the last bit to switch the cs off
dreschpe 13:b2b3e5430f81 70 void inline SPI_TFT_ILI9341::spi_bsy(void)
dreschpe 13:b2b3e5430f81 71 {
dreschpe 13:b2b3e5430f81 72 while ((_spi.spi->SR & 0x10) == 0x10); // SPI not idle
dreschpe 13:b2b3e5430f81 73 }
dreschpe 13:b2b3e5430f81 74
dreschpe 13:b2b3e5430f81 75
dreschpe 13:b2b3e5430f81 76 // switch fast between 8 and 16 bit mode
dreschpe 13:b2b3e5430f81 77 void SPI_TFT_ILI9341::spi_16(bool s)
dreschpe 13:b2b3e5430f81 78 {
dreschpe 13:b2b3e5430f81 79 if(s) _spi.spi->CR0 |= 0x08; // switch to 16 bit Mode
dreschpe 13:b2b3e5430f81 80 else _spi.spi->CR0 &= ~(0x08); // switch to 8 bit Mode
dreschpe 13:b2b3e5430f81 81
dreschpe 13:b2b3e5430f81 82 }
dreschpe 13:b2b3e5430f81 83
dreschpe 13:b2b3e5430f81 84
dreschpe 13:b2b3e5430f81 85 int SPI_TFT_ILI9341::width()
dreschpe 13:b2b3e5430f81 86 {
dreschpe 13:b2b3e5430f81 87 if (orientation == 0 || orientation == 2) return 240;
dreschpe 13:b2b3e5430f81 88 else return 320;
dreschpe 13:b2b3e5430f81 89 }
dreschpe 13:b2b3e5430f81 90
dreschpe 13:b2b3e5430f81 91
dreschpe 13:b2b3e5430f81 92 int SPI_TFT_ILI9341::height()
dreschpe 13:b2b3e5430f81 93 {
dreschpe 13:b2b3e5430f81 94 if (orientation == 0 || orientation == 2) return 320;
dreschpe 13:b2b3e5430f81 95 else return 240;
dreschpe 13:b2b3e5430f81 96 }
dreschpe 13:b2b3e5430f81 97
dreschpe 13:b2b3e5430f81 98
dreschpe 13:b2b3e5430f81 99 void SPI_TFT_ILI9341::set_orientation(unsigned int o)
dreschpe 13:b2b3e5430f81 100 {
dreschpe 13:b2b3e5430f81 101 orientation = o;
dreschpe 13:b2b3e5430f81 102 wr_cmd(0x36); // MEMORY_ACCESS_CONTROL
dreschpe 13:b2b3e5430f81 103 switch (orientation) {
dreschpe 13:b2b3e5430f81 104 case 0:
dreschpe 13:b2b3e5430f81 105 f_write(0x48);
dreschpe 13:b2b3e5430f81 106 break;
dreschpe 13:b2b3e5430f81 107 case 1:
dreschpe 13:b2b3e5430f81 108 f_write(0x28);
dreschpe 13:b2b3e5430f81 109 break;
dreschpe 13:b2b3e5430f81 110 case 2:
dreschpe 13:b2b3e5430f81 111 f_write(0x88);
dreschpe 13:b2b3e5430f81 112 break;
dreschpe 13:b2b3e5430f81 113 case 3:
dreschpe 13:b2b3e5430f81 114 f_write(0xE8);
dreschpe 13:b2b3e5430f81 115 break;
dreschpe 13:b2b3e5430f81 116 }
dreschpe 13:b2b3e5430f81 117 spi_bsy(); // wait for end of transfer
dreschpe 13:b2b3e5430f81 118 _cs = 1;
dreschpe 13:b2b3e5430f81 119 WindowMax();
dreschpe 13:b2b3e5430f81 120 }
dreschpe 13:b2b3e5430f81 121
dreschpe 13:b2b3e5430f81 122
dreschpe 13:b2b3e5430f81 123 // write command to tft register
dreschpe 13:b2b3e5430f81 124 // use fast command
dreschpe 13:b2b3e5430f81 125 void SPI_TFT_ILI9341::wr_cmd(unsigned char cmd)
dreschpe 13:b2b3e5430f81 126 {
dreschpe 13:b2b3e5430f81 127 _dc = 0;
dreschpe 13:b2b3e5430f81 128 _cs = 0;
dreschpe 13:b2b3e5430f81 129 f_write(cmd);
dreschpe 13:b2b3e5430f81 130 spi_bsy();
dreschpe 13:b2b3e5430f81 131 _dc = 1;
dreschpe 13:b2b3e5430f81 132 }
dreschpe 13:b2b3e5430f81 133
dreschpe 13:b2b3e5430f81 134 void SPI_TFT_ILI9341::wr_dat(unsigned char dat)
dreschpe 13:b2b3e5430f81 135 {
dreschpe 13:b2b3e5430f81 136 f_write(dat);
dreschpe 13:b2b3e5430f81 137 spi_bsy(); // wait for SPI send
dreschpe 13:b2b3e5430f81 138 }
dreschpe 13:b2b3e5430f81 139
dreschpe 13:b2b3e5430f81 140 // the ILI9341 can read
dreschpe 13:b2b3e5430f81 141 char SPI_TFT_ILI9341::rd_byte(unsigned char cmd)
dreschpe 13:b2b3e5430f81 142 {
dreschpe 13:b2b3e5430f81 143 // has to change !!
dreschpe 13:b2b3e5430f81 144 return(0);
dreschpe 13:b2b3e5430f81 145 }
dreschpe 13:b2b3e5430f81 146
dreschpe 13:b2b3e5430f81 147 // read 32 bit
dreschpe 13:b2b3e5430f81 148 int SPI_TFT_ILI9341::rd_32(unsigned char cmd)
dreschpe 13:b2b3e5430f81 149 {
dreschpe 13:b2b3e5430f81 150 // has to change !!!
dreschpe 13:b2b3e5430f81 151 return(0);
dreschpe 13:b2b3e5430f81 152 }
dreschpe 13:b2b3e5430f81 153
dreschpe 13:b2b3e5430f81 154 int SPI_TFT_ILI9341::Read_ID(void)
dreschpe 13:b2b3e5430f81 155 {
dreschpe 13:b2b3e5430f81 156 int r;
dreschpe 13:b2b3e5430f81 157 r = rd_byte(0x0A);
dreschpe 13:b2b3e5430f81 158 r = rd_byte(0x0A);
dreschpe 13:b2b3e5430f81 159 r = rd_byte(0x0A);
dreschpe 13:b2b3e5430f81 160 r = rd_byte(0x0A);
dreschpe 13:b2b3e5430f81 161 return(r);
dreschpe 13:b2b3e5430f81 162 }
dreschpe 13:b2b3e5430f81 163
dreschpe 13:b2b3e5430f81 164
dreschpe 13:b2b3e5430f81 165 // Init code based on MI0283QT datasheet
dreschpe 13:b2b3e5430f81 166 // this code is called only at start
dreschpe 13:b2b3e5430f81 167 // no need to be optimized
dreschpe 13:b2b3e5430f81 168
dreschpe 13:b2b3e5430f81 169 void SPI_TFT_ILI9341::tft_reset()
dreschpe 13:b2b3e5430f81 170 {
dreschpe 13:b2b3e5430f81 171 _cs = 1; // cs high
dreschpe 13:b2b3e5430f81 172 _dc = 1; // dc high
dreschpe 13:b2b3e5430f81 173 _reset = 0; // display reset
dreschpe 13:b2b3e5430f81 174
dreschpe 13:b2b3e5430f81 175 wait_us(50);
dreschpe 13:b2b3e5430f81 176 _reset = 1; // end hardware reset
dreschpe 13:b2b3e5430f81 177 wait_ms(5);
dreschpe 13:b2b3e5430f81 178
dreschpe 13:b2b3e5430f81 179 wr_cmd(0x01); // SW reset
dreschpe 13:b2b3e5430f81 180 wait_ms(5);
dreschpe 13:b2b3e5430f81 181 wr_cmd(0x28); // display off
dreschpe 13:b2b3e5430f81 182
dreschpe 13:b2b3e5430f81 183 /* Start Initial Sequence ----------------------------------------------------*/
dreschpe 13:b2b3e5430f81 184 wr_cmd(0xCF);
dreschpe 13:b2b3e5430f81 185 f_write(0x00);
dreschpe 13:b2b3e5430f81 186 f_write(0x83);
dreschpe 13:b2b3e5430f81 187 f_write(0x30);
dreschpe 13:b2b3e5430f81 188 spi_bsy();
dreschpe 13:b2b3e5430f81 189 _cs = 1;
dreschpe 13:b2b3e5430f81 190
dreschpe 13:b2b3e5430f81 191 wr_cmd(0xED);
dreschpe 13:b2b3e5430f81 192 f_write(0x64);
dreschpe 13:b2b3e5430f81 193 f_write(0x03);
dreschpe 13:b2b3e5430f81 194 f_write(0x12);
dreschpe 13:b2b3e5430f81 195 f_write(0x81);
dreschpe 13:b2b3e5430f81 196 spi_bsy();
dreschpe 13:b2b3e5430f81 197 _cs = 1;
dreschpe 13:b2b3e5430f81 198
dreschpe 13:b2b3e5430f81 199 wr_cmd(0xE8);
dreschpe 13:b2b3e5430f81 200 f_write(0x85);
dreschpe 13:b2b3e5430f81 201 f_write(0x01);
dreschpe 13:b2b3e5430f81 202 f_write(0x79);
dreschpe 13:b2b3e5430f81 203 spi_bsy();
dreschpe 13:b2b3e5430f81 204 _cs = 1;
dreschpe 13:b2b3e5430f81 205
dreschpe 13:b2b3e5430f81 206 wr_cmd(0xCB);
dreschpe 13:b2b3e5430f81 207 f_write(0x39);
dreschpe 13:b2b3e5430f81 208 f_write(0x2C);
dreschpe 13:b2b3e5430f81 209 f_write(0x00);
dreschpe 13:b2b3e5430f81 210 f_write(0x34);
dreschpe 13:b2b3e5430f81 211 f_write(0x02);
dreschpe 13:b2b3e5430f81 212 spi_bsy();
dreschpe 13:b2b3e5430f81 213 _cs = 1;
dreschpe 13:b2b3e5430f81 214
dreschpe 13:b2b3e5430f81 215 wr_cmd(0xF7);
dreschpe 13:b2b3e5430f81 216 f_write(0x20);
dreschpe 13:b2b3e5430f81 217 spi_bsy();
dreschpe 13:b2b3e5430f81 218 _cs = 1;
dreschpe 13:b2b3e5430f81 219
dreschpe 13:b2b3e5430f81 220 wr_cmd(0xEA);
dreschpe 13:b2b3e5430f81 221 f_write(0x00);
dreschpe 13:b2b3e5430f81 222 f_write(0x00);
dreschpe 13:b2b3e5430f81 223 spi_bsy();
dreschpe 13:b2b3e5430f81 224 _cs = 1;
dreschpe 13:b2b3e5430f81 225
dreschpe 13:b2b3e5430f81 226 wr_cmd(0xC0); // POWER_CONTROL_1
dreschpe 13:b2b3e5430f81 227 f_write(0x26);
dreschpe 13:b2b3e5430f81 228 spi_bsy();
dreschpe 13:b2b3e5430f81 229 _cs = 1;
dreschpe 13:b2b3e5430f81 230
dreschpe 13:b2b3e5430f81 231 wr_cmd(0xC1); // POWER_CONTROL_2
dreschpe 13:b2b3e5430f81 232 f_write(0x11);
dreschpe 13:b2b3e5430f81 233 spi_bsy();
dreschpe 13:b2b3e5430f81 234 _cs = 1;
dreschpe 13:b2b3e5430f81 235
dreschpe 13:b2b3e5430f81 236 wr_cmd(0xC5); // VCOM_CONTROL_1
dreschpe 13:b2b3e5430f81 237 f_write(0x35);
dreschpe 13:b2b3e5430f81 238 f_write(0x3E);
dreschpe 13:b2b3e5430f81 239 spi_bsy();
dreschpe 13:b2b3e5430f81 240 _cs = 1;
dreschpe 13:b2b3e5430f81 241
dreschpe 13:b2b3e5430f81 242 wr_cmd(0xC7); // VCOM_CONTROL_2
dreschpe 13:b2b3e5430f81 243 f_write(0xBE);
dreschpe 13:b2b3e5430f81 244 spi_bsy();
dreschpe 13:b2b3e5430f81 245 _cs = 1;
dreschpe 13:b2b3e5430f81 246
dreschpe 13:b2b3e5430f81 247 wr_cmd(0x36); // MEMORY_ACCESS_CONTROL
dreschpe 13:b2b3e5430f81 248 f_write(0x48);
dreschpe 13:b2b3e5430f81 249 spi_bsy();
dreschpe 13:b2b3e5430f81 250 _cs = 1;
dreschpe 13:b2b3e5430f81 251
dreschpe 13:b2b3e5430f81 252 wr_cmd(0x3A); // COLMOD_PIXEL_FORMAT_SET
dreschpe 13:b2b3e5430f81 253 f_write(0x55); // 16 bit pixel
dreschpe 13:b2b3e5430f81 254 spi_bsy();
dreschpe 13:b2b3e5430f81 255 _cs = 1;
dreschpe 13:b2b3e5430f81 256
dreschpe 13:b2b3e5430f81 257 wr_cmd(0xB1); // Frame Rate
dreschpe 13:b2b3e5430f81 258 f_write(0x00);
dreschpe 13:b2b3e5430f81 259 f_write(0x1B);
dreschpe 13:b2b3e5430f81 260 spi_bsy();
dreschpe 13:b2b3e5430f81 261 _cs = 1;
dreschpe 13:b2b3e5430f81 262
dreschpe 13:b2b3e5430f81 263 wr_cmd(0xF2); // Gamma Function Disable
dreschpe 13:b2b3e5430f81 264 f_write(0x08);
dreschpe 13:b2b3e5430f81 265 spi_bsy();
dreschpe 13:b2b3e5430f81 266 _cs = 1;
dreschpe 13:b2b3e5430f81 267
dreschpe 13:b2b3e5430f81 268 wr_cmd(0x26);
dreschpe 13:b2b3e5430f81 269 f_write(0x01); // gamma set for curve 01/2/04/08
dreschpe 13:b2b3e5430f81 270 spi_bsy();
dreschpe 13:b2b3e5430f81 271 _cs = 1;
dreschpe 13:b2b3e5430f81 272
dreschpe 13:b2b3e5430f81 273 wr_cmd(0xE0); // positive gamma correction
dreschpe 13:b2b3e5430f81 274 f_write(0x1F);
dreschpe 13:b2b3e5430f81 275 f_write(0x1A);
dreschpe 13:b2b3e5430f81 276 f_write(0x18);
dreschpe 13:b2b3e5430f81 277 f_write(0x0A);
dreschpe 13:b2b3e5430f81 278 f_write(0x0F);
dreschpe 13:b2b3e5430f81 279 f_write(0x06);
dreschpe 13:b2b3e5430f81 280 f_write(0x45);
dreschpe 13:b2b3e5430f81 281 f_write(0x87);
dreschpe 13:b2b3e5430f81 282 f_write(0x32);
dreschpe 13:b2b3e5430f81 283 f_write(0x0A);
dreschpe 13:b2b3e5430f81 284 f_write(0x07);
dreschpe 13:b2b3e5430f81 285 f_write(0x02);
dreschpe 13:b2b3e5430f81 286 f_write(0x07);
dreschpe 13:b2b3e5430f81 287 f_write(0x05);
dreschpe 13:b2b3e5430f81 288 f_write(0x00);
dreschpe 13:b2b3e5430f81 289 spi_bsy();
dreschpe 13:b2b3e5430f81 290 _cs = 1;
dreschpe 13:b2b3e5430f81 291
dreschpe 13:b2b3e5430f81 292 wr_cmd(0xE1); // negativ gamma correction
dreschpe 13:b2b3e5430f81 293 f_write(0x00);
dreschpe 13:b2b3e5430f81 294 f_write(0x25);
dreschpe 13:b2b3e5430f81 295 f_write(0x27);
dreschpe 13:b2b3e5430f81 296 f_write(0x05);
dreschpe 13:b2b3e5430f81 297 f_write(0x10);
dreschpe 13:b2b3e5430f81 298 f_write(0x09);
dreschpe 13:b2b3e5430f81 299 f_write(0x3A);
dreschpe 13:b2b3e5430f81 300 f_write(0x78);
dreschpe 13:b2b3e5430f81 301 f_write(0x4D);
dreschpe 13:b2b3e5430f81 302 f_write(0x05);
dreschpe 13:b2b3e5430f81 303 f_write(0x18);
dreschpe 13:b2b3e5430f81 304 f_write(0x0D);
dreschpe 13:b2b3e5430f81 305 f_write(0x38);
dreschpe 13:b2b3e5430f81 306 f_write(0x3A);
dreschpe 13:b2b3e5430f81 307 f_write(0x1F);
dreschpe 13:b2b3e5430f81 308 spi_bsy();
dreschpe 13:b2b3e5430f81 309 _cs = 1;
dreschpe 13:b2b3e5430f81 310
dreschpe 13:b2b3e5430f81 311 WindowMax ();
dreschpe 13:b2b3e5430f81 312
dreschpe 13:b2b3e5430f81 313 //wr_cmd(0x34); // tearing effect off
dreschpe 13:b2b3e5430f81 314 //_cs = 1;
dreschpe 13:b2b3e5430f81 315
dreschpe 13:b2b3e5430f81 316 //wr_cmd(0x35); // tearing effect on
dreschpe 13:b2b3e5430f81 317 //_cs = 1;
dreschpe 13:b2b3e5430f81 318
dreschpe 13:b2b3e5430f81 319 wr_cmd(0xB7); // entry mode
dreschpe 13:b2b3e5430f81 320 f_write(0x07);
dreschpe 13:b2b3e5430f81 321 spi_bsy();
dreschpe 13:b2b3e5430f81 322 _cs = 1;
dreschpe 13:b2b3e5430f81 323
dreschpe 13:b2b3e5430f81 324 wr_cmd(0xB6); // display function control
dreschpe 13:b2b3e5430f81 325 f_write(0x0A);
dreschpe 13:b2b3e5430f81 326 f_write(0x82);
dreschpe 13:b2b3e5430f81 327 f_write(0x27);
dreschpe 13:b2b3e5430f81 328 f_write(0x00);
dreschpe 13:b2b3e5430f81 329 spi_bsy();
dreschpe 13:b2b3e5430f81 330 _cs = 1;
dreschpe 13:b2b3e5430f81 331
dreschpe 13:b2b3e5430f81 332 wr_cmd(0x11); // sleep out
dreschpe 13:b2b3e5430f81 333 spi_bsy();
dreschpe 13:b2b3e5430f81 334 _cs = 1;
dreschpe 13:b2b3e5430f81 335
dreschpe 13:b2b3e5430f81 336 wait_ms(100);
dreschpe 13:b2b3e5430f81 337
dreschpe 13:b2b3e5430f81 338 wr_cmd(0x29); // display on
dreschpe 13:b2b3e5430f81 339 spi_bsy();
dreschpe 13:b2b3e5430f81 340 _cs = 1;
dreschpe 13:b2b3e5430f81 341
dreschpe 13:b2b3e5430f81 342 wait_ms(100);
dreschpe 13:b2b3e5430f81 343
dreschpe 13:b2b3e5430f81 344 // setup DMA channel 0
dreschpe 13:b2b3e5430f81 345 LPC_SC->PCONP |= (1UL << 29); // Power up the GPDMA.
dreschpe 13:b2b3e5430f81 346 LPC_GPDMA->DMACConfig = 1; // enable DMA controller
dreschpe 13:b2b3e5430f81 347 LPC_GPDMA->DMACIntTCClear = 0x1; // Reset the Interrupt status
dreschpe 13:b2b3e5430f81 348 LPC_GPDMA->DMACIntErrClr = 0x1;
dreschpe 13:b2b3e5430f81 349 LPC_GPDMACH0->DMACCLLI = 0;
dreschpe 13:b2b3e5430f81 350 }
dreschpe 13:b2b3e5430f81 351
dreschpe 13:b2b3e5430f81 352
dreschpe 13:b2b3e5430f81 353 // speed optimized
dreschpe 13:b2b3e5430f81 354 // write direct to SPI1 register !
dreschpe 13:b2b3e5430f81 355 void SPI_TFT_ILI9341::pixel(int x, int y, int color)
dreschpe 13:b2b3e5430f81 356 {
dreschpe 13:b2b3e5430f81 357 wr_cmd(0x2A);
dreschpe 13:b2b3e5430f81 358 spi_16(1); // switch to 8 bit Mode
dreschpe 13:b2b3e5430f81 359 f_write(x);
dreschpe 13:b2b3e5430f81 360 spi_bsy();
dreschpe 13:b2b3e5430f81 361 _cs = 1;
dreschpe 13:b2b3e5430f81 362
dreschpe 13:b2b3e5430f81 363 spi_16(0); // switch to 8 bit Mode
dreschpe 13:b2b3e5430f81 364 wr_cmd(0x2B);
dreschpe 13:b2b3e5430f81 365 spi_16(1);
dreschpe 13:b2b3e5430f81 366 f_write(y);
dreschpe 13:b2b3e5430f81 367 spi_bsy();
dreschpe 13:b2b3e5430f81 368 _cs = 1;
dreschpe 13:b2b3e5430f81 369 spi_16(0);
dreschpe 13:b2b3e5430f81 370
dreschpe 13:b2b3e5430f81 371 wr_cmd(0x2C); // send pixel
dreschpe 13:b2b3e5430f81 372 spi_16(1);
dreschpe 13:b2b3e5430f81 373 f_write(color);
dreschpe 13:b2b3e5430f81 374 spi_bsy();
dreschpe 13:b2b3e5430f81 375 _cs = 1;
dreschpe 13:b2b3e5430f81 376 spi_16(0);
dreschpe 13:b2b3e5430f81 377 }
dreschpe 13:b2b3e5430f81 378
dreschpe 13:b2b3e5430f81 379 // optimized
dreschpe 13:b2b3e5430f81 380 // write direct to SPI1 register !
dreschpe 13:b2b3e5430f81 381 void SPI_TFT_ILI9341::window (unsigned int x, unsigned int y, unsigned int w, unsigned int h)
dreschpe 13:b2b3e5430f81 382 {
dreschpe 13:b2b3e5430f81 383 wr_cmd(0x2A);
dreschpe 13:b2b3e5430f81 384 spi_16(1);
dreschpe 13:b2b3e5430f81 385 f_write(x);
dreschpe 13:b2b3e5430f81 386 f_write(x+w-1);
dreschpe 13:b2b3e5430f81 387 spi_bsy();
dreschpe 13:b2b3e5430f81 388 _cs = 1;
dreschpe 13:b2b3e5430f81 389 spi_16(0);
dreschpe 13:b2b3e5430f81 390
dreschpe 13:b2b3e5430f81 391 wr_cmd(0x2B);
dreschpe 13:b2b3e5430f81 392 spi_16(1);
dreschpe 13:b2b3e5430f81 393 f_write(y) ;
dreschpe 13:b2b3e5430f81 394 f_write(y+h-1);
dreschpe 13:b2b3e5430f81 395 spi_bsy();
dreschpe 13:b2b3e5430f81 396 _cs = 1;
dreschpe 13:b2b3e5430f81 397 spi_16(0);
dreschpe 13:b2b3e5430f81 398 }
dreschpe 13:b2b3e5430f81 399
dreschpe 13:b2b3e5430f81 400
dreschpe 13:b2b3e5430f81 401 void SPI_TFT_ILI9341::WindowMax (void)
dreschpe 13:b2b3e5430f81 402 {
dreschpe 13:b2b3e5430f81 403 window (0, 0, width(), height());
dreschpe 13:b2b3e5430f81 404 }
dreschpe 13:b2b3e5430f81 405
dreschpe 13:b2b3e5430f81 406 // optimized
dreschpe 13:b2b3e5430f81 407 // use DMA to transfer pixel data to the screen
dreschpe 13:b2b3e5430f81 408 void SPI_TFT_ILI9341::cls (void)
dreschpe 13:b2b3e5430f81 409 {
dreschpe 13:b2b3e5430f81 410 // we can use the fillrect function
dreschpe 13:b2b3e5430f81 411 fillrect(0,0,width()-1,height()-1,_background);
dreschpe 13:b2b3e5430f81 412 }
dreschpe 13:b2b3e5430f81 413
dreschpe 13:b2b3e5430f81 414 void SPI_TFT_ILI9341::circle(int x0, int y0, int r, int color)
dreschpe 13:b2b3e5430f81 415 {
dreschpe 13:b2b3e5430f81 416
dreschpe 13:b2b3e5430f81 417 int x = -r, y = 0, err = 2-2*r, e2;
dreschpe 13:b2b3e5430f81 418 do {
dreschpe 13:b2b3e5430f81 419 pixel(x0-x, y0+y,color);
dreschpe 13:b2b3e5430f81 420 pixel(x0+x, y0+y,color);
dreschpe 13:b2b3e5430f81 421 pixel(x0+x, y0-y,color);
dreschpe 13:b2b3e5430f81 422 pixel(x0-x, y0-y,color);
dreschpe 13:b2b3e5430f81 423 e2 = err;
dreschpe 13:b2b3e5430f81 424 if (e2 <= y) {
dreschpe 13:b2b3e5430f81 425 err += ++y*2+1;
dreschpe 13:b2b3e5430f81 426 if (-x == y && e2 <= x) e2 = 0;
dreschpe 13:b2b3e5430f81 427 }
dreschpe 13:b2b3e5430f81 428 if (e2 > x) err += ++x*2+1;
dreschpe 13:b2b3e5430f81 429 } while (x <= 0);
dreschpe 13:b2b3e5430f81 430 }
dreschpe 13:b2b3e5430f81 431
dreschpe 13:b2b3e5430f81 432 void SPI_TFT_ILI9341::fillcircle(int x0, int y0, int r, int color)
dreschpe 13:b2b3e5430f81 433 {
dreschpe 13:b2b3e5430f81 434 int x = -r, y = 0, err = 2-2*r, e2;
dreschpe 13:b2b3e5430f81 435 do {
dreschpe 13:b2b3e5430f81 436 vline(x0-x, y0-y, y0+y, color);
dreschpe 13:b2b3e5430f81 437 vline(x0+x, y0-y, y0+y, color);
dreschpe 13:b2b3e5430f81 438 e2 = err;
dreschpe 13:b2b3e5430f81 439 if (e2 <= y) {
dreschpe 13:b2b3e5430f81 440 err += ++y*2+1;
dreschpe 13:b2b3e5430f81 441 if (-x == y && e2 <= x) e2 = 0;
dreschpe 13:b2b3e5430f81 442 }
dreschpe 13:b2b3e5430f81 443 if (e2 > x) err += ++x*2+1;
dreschpe 13:b2b3e5430f81 444 } while (x <= 0);
dreschpe 13:b2b3e5430f81 445 }
dreschpe 13:b2b3e5430f81 446
dreschpe 13:b2b3e5430f81 447
dreschpe 13:b2b3e5430f81 448 // optimized for speed
dreschpe 13:b2b3e5430f81 449 void SPI_TFT_ILI9341::hline(int x0, int x1, int y, int color)
dreschpe 13:b2b3e5430f81 450 {
dreschpe 13:b2b3e5430f81 451 int w,j;
dreschpe 13:b2b3e5430f81 452 w = x1 - x0 + 1;
dreschpe 13:b2b3e5430f81 453 window(x0,y,w,1);
dreschpe 13:b2b3e5430f81 454 _dc = 0;
dreschpe 13:b2b3e5430f81 455 _cs = 0;
dreschpe 13:b2b3e5430f81 456 f_write(0x2C); // send pixel
dreschpe 13:b2b3e5430f81 457 spi_bsy();
dreschpe 13:b2b3e5430f81 458 _dc = 1;
dreschpe 13:b2b3e5430f81 459 spi_16(1);
dreschpe 13:b2b3e5430f81 460
dreschpe 13:b2b3e5430f81 461 for (j=0; j<w; j++) {
dreschpe 13:b2b3e5430f81 462 f_write(color);
dreschpe 13:b2b3e5430f81 463 }
dreschpe 13:b2b3e5430f81 464 spi_bsy();
dreschpe 13:b2b3e5430f81 465 spi_16(0);
dreschpe 13:b2b3e5430f81 466 _cs = 1;
dreschpe 13:b2b3e5430f81 467 WindowMax();
dreschpe 13:b2b3e5430f81 468 return;
dreschpe 13:b2b3e5430f81 469 }
dreschpe 13:b2b3e5430f81 470
dreschpe 13:b2b3e5430f81 471 // optimized for speed
dreschpe 13:b2b3e5430f81 472 void SPI_TFT_ILI9341::vline(int x, int y0, int y1, int color)
dreschpe 13:b2b3e5430f81 473 {
dreschpe 13:b2b3e5430f81 474 int h,y;
dreschpe 13:b2b3e5430f81 475 h = y1 - y0 + 1;
dreschpe 13:b2b3e5430f81 476 window(x,y0,1,h);
dreschpe 13:b2b3e5430f81 477 _dc = 0;
dreschpe 13:b2b3e5430f81 478 _cs = 0;
dreschpe 13:b2b3e5430f81 479 f_write(0x2C); // send pixel
dreschpe 13:b2b3e5430f81 480 spi_bsy();
dreschpe 13:b2b3e5430f81 481 _dc = 1;
dreschpe 13:b2b3e5430f81 482 spi_16(1);
dreschpe 13:b2b3e5430f81 483 // switch to 16 bit Mode 3
dreschpe 13:b2b3e5430f81 484 for (y=0; y<h; y++) {
dreschpe 13:b2b3e5430f81 485 f_write(color);
dreschpe 13:b2b3e5430f81 486 }
dreschpe 13:b2b3e5430f81 487 spi_bsy();
dreschpe 13:b2b3e5430f81 488 spi_16(0);
dreschpe 13:b2b3e5430f81 489 _cs = 1;
dreschpe 13:b2b3e5430f81 490 WindowMax();
dreschpe 13:b2b3e5430f81 491 return;
dreschpe 13:b2b3e5430f81 492 }
dreschpe 13:b2b3e5430f81 493
dreschpe 13:b2b3e5430f81 494
dreschpe 13:b2b3e5430f81 495 void SPI_TFT_ILI9341::line(int x0, int y0, int x1, int y1, int color)
dreschpe 13:b2b3e5430f81 496 {
dreschpe 13:b2b3e5430f81 497 //WindowMax();
dreschpe 13:b2b3e5430f81 498 int dx = 0, dy = 0;
dreschpe 13:b2b3e5430f81 499 int dx_sym = 0, dy_sym = 0;
dreschpe 13:b2b3e5430f81 500 int dx_x2 = 0, dy_x2 = 0;
dreschpe 13:b2b3e5430f81 501 int di = 0;
dreschpe 13:b2b3e5430f81 502
dreschpe 13:b2b3e5430f81 503 dx = x1-x0;
dreschpe 13:b2b3e5430f81 504 dy = y1-y0;
dreschpe 13:b2b3e5430f81 505
dreschpe 13:b2b3e5430f81 506 if (dx == 0) { /* vertical line */
dreschpe 13:b2b3e5430f81 507 if (y1 > y0) vline(x0,y0,y1,color);
dreschpe 13:b2b3e5430f81 508 else vline(x0,y1,y0,color);
dreschpe 13:b2b3e5430f81 509 return;
dreschpe 13:b2b3e5430f81 510 }
dreschpe 13:b2b3e5430f81 511
dreschpe 13:b2b3e5430f81 512 if (dx > 0) {
dreschpe 13:b2b3e5430f81 513 dx_sym = 1;
dreschpe 13:b2b3e5430f81 514 } else {
dreschpe 13:b2b3e5430f81 515 dx_sym = -1;
dreschpe 13:b2b3e5430f81 516 }
dreschpe 13:b2b3e5430f81 517 if (dy == 0) { /* horizontal line */
dreschpe 13:b2b3e5430f81 518 if (x1 > x0) hline(x0,x1,y0,color);
dreschpe 13:b2b3e5430f81 519 else hline(x1,x0,y0,color);
dreschpe 13:b2b3e5430f81 520 return;
dreschpe 13:b2b3e5430f81 521 }
dreschpe 13:b2b3e5430f81 522
dreschpe 13:b2b3e5430f81 523 if (dy > 0) {
dreschpe 13:b2b3e5430f81 524 dy_sym = 1;
dreschpe 13:b2b3e5430f81 525 } else {
dreschpe 13:b2b3e5430f81 526 dy_sym = -1;
dreschpe 13:b2b3e5430f81 527 }
dreschpe 13:b2b3e5430f81 528
dreschpe 13:b2b3e5430f81 529 dx = dx_sym*dx;
dreschpe 13:b2b3e5430f81 530 dy = dy_sym*dy;
dreschpe 13:b2b3e5430f81 531
dreschpe 13:b2b3e5430f81 532 dx_x2 = dx*2;
dreschpe 13:b2b3e5430f81 533 dy_x2 = dy*2;
dreschpe 13:b2b3e5430f81 534
dreschpe 13:b2b3e5430f81 535 if (dx >= dy) {
dreschpe 13:b2b3e5430f81 536 di = dy_x2 - dx;
dreschpe 13:b2b3e5430f81 537 while (x0 != x1) {
dreschpe 13:b2b3e5430f81 538
dreschpe 13:b2b3e5430f81 539 pixel(x0, y0, color);
dreschpe 13:b2b3e5430f81 540 x0 += dx_sym;
dreschpe 13:b2b3e5430f81 541 if (di<0) {
dreschpe 13:b2b3e5430f81 542 di += dy_x2;
dreschpe 13:b2b3e5430f81 543 } else {
dreschpe 13:b2b3e5430f81 544 di += dy_x2 - dx_x2;
dreschpe 13:b2b3e5430f81 545 y0 += dy_sym;
dreschpe 13:b2b3e5430f81 546 }
dreschpe 13:b2b3e5430f81 547 }
dreschpe 13:b2b3e5430f81 548 pixel(x0, y0, color);
dreschpe 13:b2b3e5430f81 549 } else {
dreschpe 13:b2b3e5430f81 550 di = dx_x2 - dy;
dreschpe 13:b2b3e5430f81 551 while (y0 != y1) {
dreschpe 13:b2b3e5430f81 552 pixel(x0, y0, color);
dreschpe 13:b2b3e5430f81 553 y0 += dy_sym;
dreschpe 13:b2b3e5430f81 554 if (di < 0) {
dreschpe 13:b2b3e5430f81 555 di += dx_x2;
dreschpe 13:b2b3e5430f81 556 } else {
dreschpe 13:b2b3e5430f81 557 di += dx_x2 - dy_x2;
dreschpe 13:b2b3e5430f81 558 x0 += dx_sym;
dreschpe 13:b2b3e5430f81 559 }
dreschpe 13:b2b3e5430f81 560 }
dreschpe 13:b2b3e5430f81 561 pixel(x0, y0, color);
dreschpe 13:b2b3e5430f81 562 }
dreschpe 13:b2b3e5430f81 563 return;
dreschpe 13:b2b3e5430f81 564 }
dreschpe 13:b2b3e5430f81 565
dreschpe 13:b2b3e5430f81 566
dreschpe 13:b2b3e5430f81 567 void SPI_TFT_ILI9341::rect(int x0, int y0, int x1, int y1, int color)
dreschpe 13:b2b3e5430f81 568 {
dreschpe 13:b2b3e5430f81 569
dreschpe 13:b2b3e5430f81 570 if (x1 > x0) hline(x0,x1,y0,color);
dreschpe 13:b2b3e5430f81 571 else hline(x1,x0,y0,color);
dreschpe 13:b2b3e5430f81 572
dreschpe 13:b2b3e5430f81 573 if (y1 > y0) vline(x0,y0,y1,color);
dreschpe 13:b2b3e5430f81 574 else vline(x0,y1,y0,color);
dreschpe 13:b2b3e5430f81 575
dreschpe 13:b2b3e5430f81 576 if (x1 > x0) hline(x0,x1,y1,color);
dreschpe 13:b2b3e5430f81 577 else hline(x1,x0,y1,color);
dreschpe 13:b2b3e5430f81 578
dreschpe 13:b2b3e5430f81 579 if (y1 > y0) vline(x1,y0,y1,color);
dreschpe 13:b2b3e5430f81 580 else vline(x1,y1,y0,color);
dreschpe 13:b2b3e5430f81 581
dreschpe 13:b2b3e5430f81 582 return;
dreschpe 13:b2b3e5430f81 583 }
dreschpe 13:b2b3e5430f81 584
dreschpe 13:b2b3e5430f81 585
dreschpe 13:b2b3e5430f81 586
dreschpe 13:b2b3e5430f81 587 // optimized for speed
dreschpe 13:b2b3e5430f81 588 // use DMA
dreschpe 13:b2b3e5430f81 589 void SPI_TFT_ILI9341::fillrect(int x0, int y0, int x1, int y1, int color)
dreschpe 13:b2b3e5430f81 590 {
dreschpe 13:b2b3e5430f81 591 int h = y1 - y0 + 1;
dreschpe 13:b2b3e5430f81 592 int w = x1 - x0 + 1;
dreschpe 13:b2b3e5430f81 593 int pixel = h * w;
dreschpe 13:b2b3e5430f81 594 unsigned int dma_count;
dreschpe 13:b2b3e5430f81 595 window(x0,y0,w,h);
dreschpe 13:b2b3e5430f81 596
dreschpe 13:b2b3e5430f81 597 wr_cmd(0x2C); // send pixel
dreschpe 13:b2b3e5430f81 598 spi_16(1);
dreschpe 13:b2b3e5430f81 599
dreschpe 13:b2b3e5430f81 600 LPC_GPDMACH0->DMACCSrcAddr = (uint32_t)&color;
dreschpe 13:b2b3e5430f81 601
dreschpe 13:b2b3e5430f81 602 switch(spi_num) { // decide which SPI is to use
dreschpe 13:b2b3e5430f81 603 case (0):
dreschpe 13:b2b3e5430f81 604 LPC_GPDMACH0->DMACCDestAddr = (uint32_t)&LPC_SSP0->DR; // we send to SSP0
dreschpe 13:b2b3e5430f81 605 LPC_SSP0->DMACR = 0x2;
dreschpe 13:b2b3e5430f81 606 break;
dreschpe 13:b2b3e5430f81 607 case (1):
dreschpe 13:b2b3e5430f81 608 LPC_GPDMACH0->DMACCDestAddr = (uint32_t)&LPC_SSP1->DR; // we send to SSP1
dreschpe 13:b2b3e5430f81 609 LPC_SSP1->DMACR = 0x2;
dreschpe 13:b2b3e5430f81 610 break;
dreschpe 13:b2b3e5430f81 611 }
dreschpe 13:b2b3e5430f81 612
dreschpe 13:b2b3e5430f81 613 // start DMA
dreschpe 13:b2b3e5430f81 614 do {
dreschpe 13:b2b3e5430f81 615 if (pixel > 4095) {
dreschpe 13:b2b3e5430f81 616 dma_count = 4095;
dreschpe 13:b2b3e5430f81 617 pixel = pixel - 4095;
dreschpe 13:b2b3e5430f81 618 } else {
dreschpe 13:b2b3e5430f81 619 dma_count = pixel;
dreschpe 13:b2b3e5430f81 620 pixel = 0;
dreschpe 13:b2b3e5430f81 621 }
dreschpe 13:b2b3e5430f81 622 LPC_GPDMA->DMACIntTCClear = 0x1;
dreschpe 13:b2b3e5430f81 623 LPC_GPDMA->DMACIntErrClr = 0x1;
dreschpe 13:b2b3e5430f81 624 LPC_GPDMACH0->DMACCControl = dma_count | (1UL << 18) | (1UL << 21) | (1UL << 31) ; // 16 bit transfer , no address increment, interrupt
dreschpe 13:b2b3e5430f81 625 LPC_GPDMACH0->DMACCConfig = DMA_CHANNEL_ENABLE | DMA_TRANSFER_TYPE_M2P | (spi_num ? DMA_DEST_SSP1_TX : DMA_DEST_SSP0_TX);
dreschpe 13:b2b3e5430f81 626 LPC_GPDMA->DMACSoftSReq = 0x1; // DMA request
dreschpe 13:b2b3e5430f81 627 do {
dreschpe 13:b2b3e5430f81 628 } while ((LPC_GPDMA->DMACRawIntTCStat & 0x01) == 0); // DMA is running
dreschpe 13:b2b3e5430f81 629 } while (pixel > 0);
dreschpe 13:b2b3e5430f81 630
dreschpe 13:b2b3e5430f81 631 spi_bsy(); // wait for end of transfer
dreschpe 13:b2b3e5430f81 632 spi_16(0);
dreschpe 13:b2b3e5430f81 633 _cs = 1;
dreschpe 13:b2b3e5430f81 634 WindowMax();
dreschpe 13:b2b3e5430f81 635 return;
dreschpe 13:b2b3e5430f81 636 }
dreschpe 13:b2b3e5430f81 637
dreschpe 13:b2b3e5430f81 638 void SPI_TFT_ILI9341::locate(int x, int y)
dreschpe 13:b2b3e5430f81 639 {
dreschpe 13:b2b3e5430f81 640 char_x = x;
dreschpe 13:b2b3e5430f81 641 char_y = y;
dreschpe 13:b2b3e5430f81 642 }
dreschpe 13:b2b3e5430f81 643
dreschpe 13:b2b3e5430f81 644 int SPI_TFT_ILI9341::columns()
dreschpe 13:b2b3e5430f81 645 {
dreschpe 13:b2b3e5430f81 646 return width() / font[1];
dreschpe 13:b2b3e5430f81 647 }
dreschpe 13:b2b3e5430f81 648
dreschpe 13:b2b3e5430f81 649
dreschpe 13:b2b3e5430f81 650 int SPI_TFT_ILI9341::rows()
dreschpe 13:b2b3e5430f81 651 {
dreschpe 13:b2b3e5430f81 652 return height() / font[2];
dreschpe 13:b2b3e5430f81 653 }
dreschpe 13:b2b3e5430f81 654
dreschpe 13:b2b3e5430f81 655
dreschpe 13:b2b3e5430f81 656 int SPI_TFT_ILI9341::_putc(int value)
dreschpe 13:b2b3e5430f81 657 {
dreschpe 13:b2b3e5430f81 658 if (value == '\n') { // new line
dreschpe 13:b2b3e5430f81 659 char_x = 0;
dreschpe 13:b2b3e5430f81 660 char_y = char_y + font[2];
dreschpe 13:b2b3e5430f81 661 if (char_y >= height() - font[2]) {
dreschpe 13:b2b3e5430f81 662 char_y = 0;
dreschpe 13:b2b3e5430f81 663 }
dreschpe 13:b2b3e5430f81 664 } else {
dreschpe 13:b2b3e5430f81 665 character(char_x, char_y, value);
dreschpe 13:b2b3e5430f81 666 }
dreschpe 13:b2b3e5430f81 667 return value;
dreschpe 13:b2b3e5430f81 668 }
dreschpe 13:b2b3e5430f81 669
dreschpe 13:b2b3e5430f81 670
dreschpe 13:b2b3e5430f81 671 // speed optimized
dreschpe 13:b2b3e5430f81 672 // will use dma
dreschpe 13:b2b3e5430f81 673 void SPI_TFT_ILI9341::character(int x, int y, int c)
dreschpe 13:b2b3e5430f81 674 {
dreschpe 13:b2b3e5430f81 675 unsigned int hor,vert,offset,bpl,j,i,b;
dreschpe 13:b2b3e5430f81 676 unsigned char* zeichen;
dreschpe 13:b2b3e5430f81 677 unsigned char z,w;
dreschpe 13:b2b3e5430f81 678 #ifdef use_ram
dreschpe 13:b2b3e5430f81 679 unsigned int pixel;
dreschpe 13:b2b3e5430f81 680 unsigned int p;
dreschpe 13:b2b3e5430f81 681 unsigned int dma_count,dma_off;
dreschpe 13:b2b3e5430f81 682 uint16_t *buffer;
dreschpe 13:b2b3e5430f81 683 #endif
dreschpe 13:b2b3e5430f81 684
dreschpe 13:b2b3e5430f81 685 if ((c < 31) || (c > 127)) return; // test char range
dreschpe 13:b2b3e5430f81 686
dreschpe 13:b2b3e5430f81 687 // read font parameter from start of array
dreschpe 13:b2b3e5430f81 688 offset = font[0]; // bytes / char
dreschpe 13:b2b3e5430f81 689 hor = font[1]; // get hor size of font
dreschpe 13:b2b3e5430f81 690 vert = font[2]; // get vert size of font
dreschpe 13:b2b3e5430f81 691 bpl = font[3]; // bytes per line
dreschpe 13:b2b3e5430f81 692
dreschpe 13:b2b3e5430f81 693 if (char_x + hor > width()) {
dreschpe 13:b2b3e5430f81 694 char_x = 0;
dreschpe 13:b2b3e5430f81 695 char_y = char_y + vert;
dreschpe 13:b2b3e5430f81 696 if (char_y >= height() - font[2]) {
dreschpe 13:b2b3e5430f81 697 char_y = 0;
dreschpe 13:b2b3e5430f81 698 }
dreschpe 13:b2b3e5430f81 699 }
dreschpe 13:b2b3e5430f81 700 window(char_x, char_y,hor,vert); // setup char box
dreschpe 13:b2b3e5430f81 701 wr_cmd(0x2C);
dreschpe 13:b2b3e5430f81 702 spi_16(1); // switch to 16 bit Mode
dreschpe 13:b2b3e5430f81 703 #ifdef use_ram
dreschpe 13:b2b3e5430f81 704 pixel = hor * vert; // calculate buffer size
dreschpe 13:b2b3e5430f81 705 buffer = (uint16_t *) malloc (2*pixel); // we need a buffer for the font
dreschpe 13:b2b3e5430f81 706 if(buffer != NULL) { // there is memory space -> use dma
dreschpe 13:b2b3e5430f81 707 zeichen = &font[((c -32) * offset) + 4]; // start of char bitmap
dreschpe 13:b2b3e5430f81 708 w = zeichen[0]; // width of actual char
dreschpe 13:b2b3e5430f81 709 p = 0;
dreschpe 13:b2b3e5430f81 710 // construct the font into the buffer
dreschpe 13:b2b3e5430f81 711 for (j=0; j<vert; j++) { // vert line
dreschpe 13:b2b3e5430f81 712 for (i=0; i<hor; i++) { // horz line
dreschpe 13:b2b3e5430f81 713 z = zeichen[bpl * i + ((j & 0xF8) >> 3)+1];
dreschpe 13:b2b3e5430f81 714 b = 1 << (j & 0x07);
dreschpe 13:b2b3e5430f81 715 if (( z & b ) == 0x00) {
dreschpe 13:b2b3e5430f81 716 buffer[p] = _background;
dreschpe 13:b2b3e5430f81 717 } else {
dreschpe 13:b2b3e5430f81 718 buffer[p] = _foreground;
dreschpe 13:b2b3e5430f81 719 }
dreschpe 13:b2b3e5430f81 720 p++;
dreschpe 13:b2b3e5430f81 721 }
dreschpe 13:b2b3e5430f81 722 }
dreschpe 13:b2b3e5430f81 723 // copy the buffer with DMA SPI to display
dreschpe 13:b2b3e5430f81 724 dma_off = 0; // offset for DMA transfer
dreschpe 13:b2b3e5430f81 725
dreschpe 13:b2b3e5430f81 726 switch(spi_num) { // decide which SPI is to use
dreschpe 13:b2b3e5430f81 727 case (0):
dreschpe 13:b2b3e5430f81 728 LPC_GPDMACH0->DMACCDestAddr = (uint32_t)&LPC_SSP0->DR; // we send to SSP0
dreschpe 13:b2b3e5430f81 729 LPC_SSP0->DMACR = 0x2;
dreschpe 13:b2b3e5430f81 730 break;
dreschpe 13:b2b3e5430f81 731 case (1):
dreschpe 13:b2b3e5430f81 732 LPC_GPDMACH0->DMACCDestAddr = (uint32_t)&LPC_SSP1->DR; // we send to SSP1
dreschpe 13:b2b3e5430f81 733 LPC_SSP1->DMACR = 0x2;
dreschpe 13:b2b3e5430f81 734 break;
dreschpe 13:b2b3e5430f81 735 }
dreschpe 13:b2b3e5430f81 736 // start DMA
dreschpe 13:b2b3e5430f81 737 do {
dreschpe 13:b2b3e5430f81 738 if (pixel > 4095) { // this is a giant font !
dreschpe 13:b2b3e5430f81 739 dma_count = 4095;
dreschpe 13:b2b3e5430f81 740 pixel = pixel - 4095;
dreschpe 13:b2b3e5430f81 741 } else {
dreschpe 13:b2b3e5430f81 742 dma_count = pixel;
dreschpe 13:b2b3e5430f81 743 pixel = 0;
dreschpe 13:b2b3e5430f81 744 }
dreschpe 13:b2b3e5430f81 745 LPC_GPDMA->DMACIntTCClear = 0x1;
dreschpe 13:b2b3e5430f81 746 LPC_GPDMA->DMACIntErrClr = 0x1;
dreschpe 13:b2b3e5430f81 747 LPC_GPDMACH0->DMACCSrcAddr = (uint32_t) (buffer + dma_off);
dreschpe 13:b2b3e5430f81 748 LPC_GPDMACH0->DMACCControl = dma_count | (1UL << 18) | (1UL << 21) | (1UL << 31) | DMA_CHANNEL_SRC_INC ; // 16 bit transfer , address increment, interrupt
dreschpe 13:b2b3e5430f81 749 LPC_GPDMACH0->DMACCConfig = DMA_CHANNEL_ENABLE | DMA_TRANSFER_TYPE_M2P | (spi_num ? DMA_DEST_SSP1_TX : DMA_DEST_SSP0_TX);
dreschpe 13:b2b3e5430f81 750 LPC_GPDMA->DMACSoftSReq = 0x1;
dreschpe 13:b2b3e5430f81 751 do {
dreschpe 13:b2b3e5430f81 752 } while ((LPC_GPDMA->DMACRawIntTCStat & 0x01) == 0); // DMA is running
dreschpe 13:b2b3e5430f81 753 dma_off = dma_off + dma_count;
dreschpe 13:b2b3e5430f81 754 } while (pixel > 0);
dreschpe 13:b2b3e5430f81 755
dreschpe 13:b2b3e5430f81 756
dreschpe 13:b2b3e5430f81 757 spi_bsy();
dreschpe 13:b2b3e5430f81 758 free ((uint16_t *) buffer);
dreschpe 13:b2b3e5430f81 759 spi_16(0);
dreschpe 13:b2b3e5430f81 760 }
dreschpe 13:b2b3e5430f81 761
dreschpe 13:b2b3e5430f81 762 else {
dreschpe 13:b2b3e5430f81 763 #endif
dreschpe 13:b2b3e5430f81 764 zeichen = &font[((c -32) * offset) + 4]; // start of char bitmap
dreschpe 13:b2b3e5430f81 765 w = zeichen[0]; // width of actual char
dreschpe 13:b2b3e5430f81 766 for (j=0; j<vert; j++) { // vert line
dreschpe 13:b2b3e5430f81 767 for (i=0; i<hor; i++) { // horz line
dreschpe 13:b2b3e5430f81 768 z = zeichen[bpl * i + ((j & 0xF8) >> 3)+1];
dreschpe 13:b2b3e5430f81 769 b = 1 << (j & 0x07);
dreschpe 13:b2b3e5430f81 770 if (( z & b ) == 0x00) {
dreschpe 13:b2b3e5430f81 771 f_write(_background);
dreschpe 13:b2b3e5430f81 772 } else {
dreschpe 13:b2b3e5430f81 773 f_write(_foreground);
dreschpe 13:b2b3e5430f81 774 }
dreschpe 13:b2b3e5430f81 775 }
dreschpe 13:b2b3e5430f81 776 }
dreschpe 13:b2b3e5430f81 777 spi_bsy();
dreschpe 13:b2b3e5430f81 778 _cs = 1;
dreschpe 13:b2b3e5430f81 779 spi_16(0);
dreschpe 13:b2b3e5430f81 780 #ifdef use_ram
dreschpe 13:b2b3e5430f81 781 }
dreschpe 13:b2b3e5430f81 782 #endif
dreschpe 13:b2b3e5430f81 783 _cs = 1;
dreschpe 13:b2b3e5430f81 784 WindowMax();
dreschpe 13:b2b3e5430f81 785 if ((w + 2) < hor) { // x offset to next char
dreschpe 13:b2b3e5430f81 786 char_x += w + 2;
dreschpe 13:b2b3e5430f81 787 } else char_x += hor;
dreschpe 13:b2b3e5430f81 788 }
dreschpe 13:b2b3e5430f81 789
dreschpe 13:b2b3e5430f81 790
dreschpe 13:b2b3e5430f81 791 void SPI_TFT_ILI9341::set_font(unsigned char* f)
dreschpe 13:b2b3e5430f81 792 {
dreschpe 13:b2b3e5430f81 793 font = f;
dreschpe 13:b2b3e5430f81 794 }
dreschpe 13:b2b3e5430f81 795
dreschpe 13:b2b3e5430f81 796
dreschpe 13:b2b3e5430f81 797 void SPI_TFT_ILI9341::Bitmap(unsigned int x, unsigned int y, unsigned int w, unsigned int h,unsigned char *bitmap)
dreschpe 13:b2b3e5430f81 798 {
dreschpe 13:b2b3e5430f81 799 unsigned int j;
dreschpe 13:b2b3e5430f81 800 int padd;
dreschpe 13:b2b3e5430f81 801 unsigned short *bitmap_ptr = (unsigned short *)bitmap;
dreschpe 13:b2b3e5430f81 802
dreschpe 13:b2b3e5430f81 803 unsigned int i;
dreschpe 13:b2b3e5430f81 804
dreschpe 13:b2b3e5430f81 805 // the lines are padded to multiple of 4 bytes in a bitmap
dreschpe 13:b2b3e5430f81 806 padd = -1;
dreschpe 13:b2b3e5430f81 807 do {
dreschpe 13:b2b3e5430f81 808 padd ++;
dreschpe 13:b2b3e5430f81 809 } while (2*(w + padd)%4 != 0);
dreschpe 13:b2b3e5430f81 810 window(x, y, w, h);
dreschpe 13:b2b3e5430f81 811 bitmap_ptr += ((h - 1)* (w + padd));
dreschpe 13:b2b3e5430f81 812 wr_cmd(0x2C); // send pixel
dreschpe 13:b2b3e5430f81 813 spi_16(1);
dreschpe 13:b2b3e5430f81 814 for (j = 0; j < h; j++) { //Lines
dreschpe 13:b2b3e5430f81 815 for (i = 0; i < w; i++) { // one line
dreschpe 13:b2b3e5430f81 816 f_write(*bitmap_ptr); // one line
dreschpe 13:b2b3e5430f81 817 bitmap_ptr++;
dreschpe 13:b2b3e5430f81 818 }
dreschpe 13:b2b3e5430f81 819 bitmap_ptr -= 2*w;
dreschpe 13:b2b3e5430f81 820 bitmap_ptr -= padd;
dreschpe 13:b2b3e5430f81 821 }
dreschpe 13:b2b3e5430f81 822 spi_bsy();
dreschpe 13:b2b3e5430f81 823 _cs = 1;
dreschpe 13:b2b3e5430f81 824 spi_16(0);
dreschpe 13:b2b3e5430f81 825 WindowMax();
dreschpe 13:b2b3e5430f81 826 }
dreschpe 13:b2b3e5430f81 827
dreschpe 13:b2b3e5430f81 828
dreschpe 13:b2b3e5430f81 829 // local filesystem is not implemented but you can add a SD card to a different SPI
dreschpe 13:b2b3e5430f81 830
dreschpe 13:b2b3e5430f81 831 int SPI_TFT_ILI9341::BMP_16(unsigned int x, unsigned int y, const char *Name_BMP)
dreschpe 13:b2b3e5430f81 832 {
dreschpe 13:b2b3e5430f81 833
dreschpe 13:b2b3e5430f81 834 #define OffsetPixelWidth 18
dreschpe 13:b2b3e5430f81 835 #define OffsetPixelHeigh 22
dreschpe 13:b2b3e5430f81 836 #define OffsetFileSize 34
dreschpe 13:b2b3e5430f81 837 #define OffsetPixData 10
dreschpe 13:b2b3e5430f81 838 #define OffsetBPP 28
dreschpe 13:b2b3e5430f81 839
dreschpe 13:b2b3e5430f81 840 char filename[50];
dreschpe 13:b2b3e5430f81 841 unsigned char BMP_Header[54];
dreschpe 13:b2b3e5430f81 842 unsigned short BPP_t;
dreschpe 13:b2b3e5430f81 843 unsigned int PixelWidth,PixelHeigh,start_data;
dreschpe 13:b2b3e5430f81 844 unsigned int i,off;
dreschpe 13:b2b3e5430f81 845 int padd,j;
dreschpe 13:b2b3e5430f81 846 unsigned short *line;
dreschpe 13:b2b3e5430f81 847
dreschpe 13:b2b3e5430f81 848 // get the filename
dreschpe 13:b2b3e5430f81 849 i=0;
dreschpe 13:b2b3e5430f81 850 while (*Name_BMP!='\0') {
dreschpe 13:b2b3e5430f81 851 filename[i++]=*Name_BMP++;
dreschpe 13:b2b3e5430f81 852 }
dreschpe 13:b2b3e5430f81 853 filename[i] = 0;
dreschpe 13:b2b3e5430f81 854
dreschpe 13:b2b3e5430f81 855 FILE *Image = fopen((const char *)&filename[0], "rb"); // open the bmp file
dreschpe 13:b2b3e5430f81 856 if (!Image) {
dreschpe 13:b2b3e5430f81 857 return(0); // error file not found !
dreschpe 13:b2b3e5430f81 858 }
dreschpe 13:b2b3e5430f81 859
dreschpe 13:b2b3e5430f81 860 fread(&BMP_Header[0],1,54,Image); // get the BMP Header
dreschpe 13:b2b3e5430f81 861
dreschpe 13:b2b3e5430f81 862 if (BMP_Header[0] != 0x42 || BMP_Header[1] != 0x4D) { // check magic byte
dreschpe 13:b2b3e5430f81 863 fclose(Image);
dreschpe 13:b2b3e5430f81 864 return(-1); // error no BMP file
dreschpe 13:b2b3e5430f81 865 }
dreschpe 13:b2b3e5430f81 866
dreschpe 13:b2b3e5430f81 867 BPP_t = BMP_Header[OffsetBPP] + (BMP_Header[OffsetBPP + 1] << 8);
dreschpe 13:b2b3e5430f81 868 if (BPP_t != 0x0010) {
dreschpe 13:b2b3e5430f81 869 fclose(Image);
dreschpe 13:b2b3e5430f81 870 return(-2); // error no 16 bit BMP
dreschpe 13:b2b3e5430f81 871 }
dreschpe 13:b2b3e5430f81 872
dreschpe 13:b2b3e5430f81 873 PixelHeigh = BMP_Header[OffsetPixelHeigh] + (BMP_Header[OffsetPixelHeigh + 1] << 8) + (BMP_Header[OffsetPixelHeigh + 2] << 16) + (BMP_Header[OffsetPixelHeigh + 3] << 24);
dreschpe 13:b2b3e5430f81 874 PixelWidth = BMP_Header[OffsetPixelWidth] + (BMP_Header[OffsetPixelWidth + 1] << 8) + (BMP_Header[OffsetPixelWidth + 2] << 16) + (BMP_Header[OffsetPixelWidth + 3] << 24);
dreschpe 13:b2b3e5430f81 875 if (PixelHeigh > height() + y || PixelWidth > width() + x) {
dreschpe 13:b2b3e5430f81 876 fclose(Image);
dreschpe 13:b2b3e5430f81 877 return(-3); // to big
dreschpe 13:b2b3e5430f81 878 }
dreschpe 13:b2b3e5430f81 879
dreschpe 13:b2b3e5430f81 880 start_data = BMP_Header[OffsetPixData] + (BMP_Header[OffsetPixData + 1] << 8) + (BMP_Header[OffsetPixData + 2] << 16) + (BMP_Header[OffsetPixData + 3] << 24);
dreschpe 13:b2b3e5430f81 881
dreschpe 13:b2b3e5430f81 882 line = (unsigned short *) malloc (2 * PixelWidth); // we need a buffer for a line
dreschpe 13:b2b3e5430f81 883 if (line == NULL) {
dreschpe 13:b2b3e5430f81 884 return(-4); // error no memory
dreschpe 13:b2b3e5430f81 885 }
dreschpe 13:b2b3e5430f81 886
dreschpe 13:b2b3e5430f81 887 // the bmp lines are padded to multiple of 4 bytes
dreschpe 13:b2b3e5430f81 888 padd = -1;
dreschpe 13:b2b3e5430f81 889 do {
dreschpe 13:b2b3e5430f81 890 padd ++;
dreschpe 13:b2b3e5430f81 891 } while ((PixelWidth * 2 + padd)%4 != 0);
dreschpe 13:b2b3e5430f81 892
dreschpe 13:b2b3e5430f81 893 window(x, y,PixelWidth ,PixelHeigh);
dreschpe 13:b2b3e5430f81 894 wr_cmd(0x2C); // send pixel
dreschpe 13:b2b3e5430f81 895 spi_16(1);
dreschpe 13:b2b3e5430f81 896 for (j = PixelHeigh - 1; j >= 0; j--) { //Lines bottom up
dreschpe 13:b2b3e5430f81 897 off = j * (PixelWidth * 2 + padd) + start_data; // start of line
dreschpe 13:b2b3e5430f81 898 fseek(Image, off ,SEEK_SET);
dreschpe 13:b2b3e5430f81 899 fread(line,1,PixelWidth * 2,Image); // read a line - slow
dreschpe 13:b2b3e5430f81 900 for (i = 0; i < PixelWidth; i++) { // copy pixel data to TFT
dreschpe 13:b2b3e5430f81 901 f_write(line[i]); // one 16 bit pixel
dreschpe 13:b2b3e5430f81 902 }
dreschpe 13:b2b3e5430f81 903 }
dreschpe 13:b2b3e5430f81 904 spi_bsy();
dreschpe 13:b2b3e5430f81 905 _cs = 1;
dreschpe 13:b2b3e5430f81 906 spi_16(0);
dreschpe 13:b2b3e5430f81 907 free (line);
dreschpe 13:b2b3e5430f81 908 fclose(Image);
dreschpe 13:b2b3e5430f81 909 WindowMax();
dreschpe 13:b2b3e5430f81 910 return(1);
dreschpe 13:b2b3e5430f81 911 }
dreschpe 13:b2b3e5430f81 912
dreschpe 13:b2b3e5430f81 913 #endif
dreschpe 13:b2b3e5430f81 914