LayerOne / TFT

ILI9341 for layerOne 2017 , original Racoon's

tft.cpp@0:8f8765c8b7bd, 2016-11-13 (annotated)

Committer:
charliex
Date:
Sun Nov 13 17:59:38 2016 +0000
Revision:
0:8f8765c8b7bd
updated for new board

Who changed what in which revision?

UserRevisionLine numberNew contents of line
charliex 0:8f8765c8b7bd 1 /*===================================================================*/
charliex 0:8f8765c8b7bd 2 /* */
charliex 0:8f8765c8b7bd 3 /* tft.cpp : TFT(ILI9341) function */
charliex 0:8f8765c8b7bd 4 /* */
charliex 0:8f8765c8b7bd 5 /* 2016/1/20 Racoon */
charliex 0:8f8765c8b7bd 6 /* */
charliex 0:8f8765c8b7bd 7 /*===================================================================*/
charliex 0:8f8765c8b7bd 8
charliex 0:8f8765c8b7bd 9 //#define OLD_BOARD (1)
charliex 0:8f8765c8b7bd 10
charliex 0:8f8765c8b7bd 11 #include "mbed.h"
charliex 0:8f8765c8b7bd 12 #include "tft.h"
charliex 0:8f8765c8b7bd 13
charliex 0:8f8765c8b7bd 14 #ifdef OLD_BOARD
charliex 0:8f8765c8b7bd 15 DigitalOut cs(PB_5, PullUp); // TFT chipselect pin
charliex 0:8f8765c8b7bd 16 DigitalOut back(PC_3);
charliex 0:8f8765c8b7bd 17 #else
charliex 0:8f8765c8b7bd 18 DigitalOut cs(PC_7, PullUp); // TFT chipselect pin
charliex 0:8f8765c8b7bd 19 DigitalOut back(PC_9);
charliex 0:8f8765c8b7bd 20 #endif
charliex 0:8f8765c8b7bd 21
charliex 0:8f8765c8b7bd 22 DigitalOut dc(PA_8, PullUp); // TFT data command select pin
charliex 0:8f8765c8b7bd 23 DigitalOut rst(PA_10,PullUp); // TFT reset pin
charliex 0:8f8765c8b7bd 24
charliex 0:8f8765c8b7bd 25
charliex 0:8f8765c8b7bd 26 void set_back(int flag)
charliex 0:8f8765c8b7bd 27 {
charliex 0:8f8765c8b7bd 28 back = flag ;
charliex 0:8f8765c8b7bd 29 }
charliex 0:8f8765c8b7bd 30
charliex 0:8f8765c8b7bd 31
charliex 0:8f8765c8b7bd 32 /*-------------------------------------------------------------------*/
charliex 0:8f8765c8b7bd 33 /* Write command */
charliex 0:8f8765c8b7bd 34 /*-------------------------------------------------------------------*/
charliex 0:8f8765c8b7bd 35 void write_cmd(uint8_t cmd)
charliex 0:8f8765c8b7bd 36 {
charliex 0:8f8765c8b7bd 37 dc = 0;
charliex 0:8f8765c8b7bd 38 spi_write(cmd);
charliex 0:8f8765c8b7bd 39 }
charliex 0:8f8765c8b7bd 40
charliex 0:8f8765c8b7bd 41 /*-------------------------------------------------------------------*/
charliex 0:8f8765c8b7bd 42 /* Write data */
charliex 0:8f8765c8b7bd 43 /*-------------------------------------------------------------------*/
charliex 0:8f8765c8b7bd 44 void write_data(uint8_t data)
charliex 0:8f8765c8b7bd 45 {
charliex 0:8f8765c8b7bd 46 dc = 1;
charliex 0:8f8765c8b7bd 47 spi_write(data);
charliex 0:8f8765c8b7bd 48 }
charliex 0:8f8765c8b7bd 49
charliex 0:8f8765c8b7bd 50 /*-------------------------------------------------------------------*/
charliex 0:8f8765c8b7bd 51 /* TFT reset */
charliex 0:8f8765c8b7bd 52 /*-------------------------------------------------------------------*/
charliex 0:8f8765c8b7bd 53 void tft_reset()
charliex 0:8f8765c8b7bd 54 {
charliex 0:8f8765c8b7bd 55 wait_ms(200);
charliex 0:8f8765c8b7bd 56 cs = 1;
charliex 0:8f8765c8b7bd 57 dc = 1;
charliex 0:8f8765c8b7bd 58 rst = 1;
charliex 0:8f8765c8b7bd 59 wait_ms(200);
charliex 0:8f8765c8b7bd 60 rst = 0;
charliex 0:8f8765c8b7bd 61 wait_us(10);
charliex 0:8f8765c8b7bd 62 rst = 1;
charliex 0:8f8765c8b7bd 63 wait_ms(120);
charliex 0:8f8765c8b7bd 64 cs = 0;
charliex 0:8f8765c8b7bd 65 wait_ms(10);
charliex 0:8f8765c8b7bd 66
charliex 0:8f8765c8b7bd 67 write_cmd(0x3A); // Pixel Format
charliex 0:8f8765c8b7bd 68 write_data(0x55); // 16bit Color
charliex 0:8f8765c8b7bd 69
charliex 0:8f8765c8b7bd 70 write_cmd(0xB1); // Frame Control
charliex 0:8f8765c8b7bd 71 write_data(0);
charliex 0:8f8765c8b7bd 72 write_data(0x1f);
charliex 0:8f8765c8b7bd 73
charliex 0:8f8765c8b7bd 74 write_cmd(0x36); // Memory Access Control
charliex 0:8f8765c8b7bd 75 #ifdef OLD_BOARD
charliex 0:8f8765c8b7bd 76 write_data(0xE8); // MY MX MV BGR
charliex 0:8f8765c8b7bd 77 #else
charliex 0:8f8765c8b7bd 78 write_data(0x28); // MY MX MV BGR
charliex 0:8f8765c8b7bd 79 #endif
charliex 0:8f8765c8b7bd 80
charliex 0:8f8765c8b7bd 81 write_cmd(0x11); // Sleep Out
charliex 0:8f8765c8b7bd 82 wait_ms(5);
charliex 0:8f8765c8b7bd 83
charliex 0:8f8765c8b7bd 84 write_cmd(0x29); // Display On
charliex 0:8f8765c8b7bd 85 }
charliex 0:8f8765c8b7bd 86
charliex 0:8f8765c8b7bd 87 /*-------------------------------------------------------------------*/
charliex 0:8f8765c8b7bd 88 /* Set windows size, start memory write */
charliex 0:8f8765c8b7bd 89 /*-------------------------------------------------------------------*/
charliex 0:8f8765c8b7bd 90 void tft_set_window(uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1)
charliex 0:8f8765c8b7bd 91 {
charliex 0:8f8765c8b7bd 92 write_cmd(0x2A); // Column Address Set
charliex 0:8f8765c8b7bd 93 write_data(x0 >> 8);
charliex 0:8f8765c8b7bd 94 write_data(x0);
charliex 0:8f8765c8b7bd 95 write_data(x1 >> 8);
charliex 0:8f8765c8b7bd 96 write_data(x1);
charliex 0:8f8765c8b7bd 97
charliex 0:8f8765c8b7bd 98 write_cmd(0x2B); // Page Address Set
charliex 0:8f8765c8b7bd 99 write_data(y0 >> 8);
charliex 0:8f8765c8b7bd 100 write_data(y0);
charliex 0:8f8765c8b7bd 101 write_data(y1 >> 8);
charliex 0:8f8765c8b7bd 102 write_data(y1);
charliex 0:8f8765c8b7bd 103
charliex 0:8f8765c8b7bd 104 write_cmd(0x2C); // Memory Write
charliex 0:8f8765c8b7bd 105
charliex 0:8f8765c8b7bd 106 wait_us(20);
charliex 0:8f8765c8b7bd 107
charliex 0:8f8765c8b7bd 108 dc = 1;
charliex 0:8f8765c8b7bd 109 }
charliex 0:8f8765c8b7bd 110
charliex 0:8f8765c8b7bd 111 /*-------------------------------------------------------------------*/
charliex 0:8f8765c8b7bd 112 /* Clear screen */
charliex 0:8f8765c8b7bd 113 /*-------------------------------------------------------------------*/
charliex 0:8f8765c8b7bd 114 void tft_clear(uint16_t color)
charliex 0:8f8765c8b7bd 115 {
charliex 0:8f8765c8b7bd 116 tft_set_window(0, 0, TFT_WIDTH, TFT_HEIGHT);
charliex 0:8f8765c8b7bd 117
charliex 0:8f8765c8b7bd 118 for (int i = 0; i < TFT_WIDTH * TFT_HEIGHT; ++i)
charliex 0:8f8765c8b7bd 119 {
charliex 0:8f8765c8b7bd 120 spi_writew(color);
charliex 0:8f8765c8b7bd 121 }
charliex 0:8f8765c8b7bd 122 }
charliex 0:8f8765c8b7bd 123
charliex 0:8f8765c8b7bd 124 /*-------------------------------------------------------------------*/
charliex 0:8f8765c8b7bd 125 /* Put char */
charliex 0:8f8765c8b7bd 126 /*-------------------------------------------------------------------*/
charliex 0:8f8765c8b7bd 127 void tft_put_char(int x, int y, char chr, uint16_t color, uint16_t bgcolor)
charliex 0:8f8765c8b7bd 128 {
charliex 0:8f8765c8b7bd 129 if (chr < 0x20 || chr > 0x7f)
charliex 0:8f8765c8b7bd 130 {
charliex 0:8f8765c8b7bd 131 chr = 0x3f;
charliex 0:8f8765c8b7bd 132 }
charliex 0:8f8765c8b7bd 133 else
charliex 0:8f8765c8b7bd 134 {
charliex 0:8f8765c8b7bd 135 chr = (chr < 0x60) ? chr - 0x20 : chr - 0x40;
charliex 0:8f8765c8b7bd 136 }
charliex 0:8f8765c8b7bd 137
charliex 0:8f8765c8b7bd 138 tft_set_window(x, y, x + 7, y + 6);
charliex 0:8f8765c8b7bd 139
charliex 0:8f8765c8b7bd 140 for (int dy = 0; dy < 7; ++dy)
charliex 0:8f8765c8b7bd 141 {
charliex 0:8f8765c8b7bd 142 unsigned char img = chrimg[chr][dy];
charliex 0:8f8765c8b7bd 143 for ( int dx = 0; dx < 8; ++dx)
charliex 0:8f8765c8b7bd 144 {
charliex 0:8f8765c8b7bd 145 if (img & 0x80)
charliex 0:8f8765c8b7bd 146 {
charliex 0:8f8765c8b7bd 147 spi_writew(color);
charliex 0:8f8765c8b7bd 148 }
charliex 0:8f8765c8b7bd 149 else
charliex 0:8f8765c8b7bd 150 {
charliex 0:8f8765c8b7bd 151 spi_writew(bgcolor);
charliex 0:8f8765c8b7bd 152 }
charliex 0:8f8765c8b7bd 153 img <<= 1;
charliex 0:8f8765c8b7bd 154 }
charliex 0:8f8765c8b7bd 155 }
charliex 0:8f8765c8b7bd 156
charliex 0:8f8765c8b7bd 157 }
charliex 0:8f8765c8b7bd 158
charliex 0:8f8765c8b7bd 159 /*-------------------------------------------------------------------*/
charliex 0:8f8765c8b7bd 160 /* Text out */
charliex 0:8f8765c8b7bd 161 /*-------------------------------------------------------------------*/
charliex 0:8f8765c8b7bd 162 void tft_text(int x, int y, char *text, uint16_t color, uint16_t bgcolor)
charliex 0:8f8765c8b7bd 163 {
charliex 0:8f8765c8b7bd 164 while (*text != 0)
charliex 0:8f8765c8b7bd 165 {
charliex 0:8f8765c8b7bd 166 tft_put_char(x, y, *text, color, bgcolor);
charliex 0:8f8765c8b7bd 167 x += 8;
charliex 0:8f8765c8b7bd 168 text++;
charliex 0:8f8765c8b7bd 169 }
charliex 0:8f8765c8b7bd 170 }
charliex 0:8f8765c8b7bd 171
charliex 0:8f8765c8b7bd 172 /*-------------------------------------------------------------------*/
charliex 0:8f8765c8b7bd 173 /* Horizontal Line */
charliex 0:8f8765c8b7bd 174 /*-------------------------------------------------------------------*/
charliex 0:8f8765c8b7bd 175 void tft_hline(int x1, int y, int x2, uint16_t color)
charliex 0:8f8765c8b7bd 176 {
charliex 0:8f8765c8b7bd 177 tft_set_window(x1, y, x2, y);
charliex 0:8f8765c8b7bd 178
charliex 0:8f8765c8b7bd 179 for (;x1 < x2; ++x1)
charliex 0:8f8765c8b7bd 180 {
charliex 0:8f8765c8b7bd 181 spi_writew(color);
charliex 0:8f8765c8b7bd 182 }
charliex 0:8f8765c8b7bd 183 }
charliex 0:8f8765c8b7bd 184
charliex 0:8f8765c8b7bd 185 /*-------------------------------------------------------------------*/
charliex 0:8f8765c8b7bd 186 /* Vertical Line */
charliex 0:8f8765c8b7bd 187 /*-------------------------------------------------------------------*/
charliex 0:8f8765c8b7bd 188 void tft_vline(int x, int y1, int y2, uint16_t color)
charliex 0:8f8765c8b7bd 189 {
charliex 0:8f8765c8b7bd 190 tft_set_window(x, y1, x, y2);
charliex 0:8f8765c8b7bd 191
charliex 0:8f8765c8b7bd 192 for (;y1 < y2; ++y1)
charliex 0:8f8765c8b7bd 193 {
charliex 0:8f8765c8b7bd 194 spi_writew(color);
charliex 0:8f8765c8b7bd 195 }
charliex 0:8f8765c8b7bd 196 }
charliex 0:8f8765c8b7bd 197
charliex 0:8f8765c8b7bd 198 /*-------------------------------------------------------------------*/
charliex 0:8f8765c8b7bd 199 /* Box */
charliex 0:8f8765c8b7bd 200 /*-------------------------------------------------------------------*/
charliex 0:8f8765c8b7bd 201 void tft_box(int x1, int y1, int x2, int y2, uint16_t color)
charliex 0:8f8765c8b7bd 202 {
charliex 0:8f8765c8b7bd 203 tft_hline(x1, y1, x2, color);
charliex 0:8f8765c8b7bd 204 tft_vline(x1, y1, y2, color);
charliex 0:8f8765c8b7bd 205 tft_vline(x2, y1, y2, color);
charliex 0:8f8765c8b7bd 206 tft_hline(x1, y2, x2, color);
charliex 0:8f8765c8b7bd 207 }
charliex 0:8f8765c8b7bd 208
charliex 0:8f8765c8b7bd 209 /*-------------------------------------------------------------------*/
charliex 0:8f8765c8b7bd 210 /* Box Fill */
charliex 0:8f8765c8b7bd 211 /*-------------------------------------------------------------------*/
charliex 0:8f8765c8b7bd 212 void tft_boxfill(int x1, int y1, int x2, int y2, uint16_t color)
charliex 0:8f8765c8b7bd 213 {
charliex 0:8f8765c8b7bd 214 tft_set_window(x1, y1, x2, y2);
charliex 0:8f8765c8b7bd 215
charliex 0:8f8765c8b7bd 216 for (int i = 0; i < (x2 - x1 + 1) * (y2 - y1 + 1); ++i)
charliex 0:8f8765c8b7bd 217 {
charliex 0:8f8765c8b7bd 218 spi_writew(color);
charliex 0:8f8765c8b7bd 219 }
charliex 0:8f8765c8b7bd 220 }
charliex 0:8f8765c8b7bd 221
charliex 0:8f8765c8b7bd 222 /*-------------------------------------------------------------------*/
charliex 0:8f8765c8b7bd 223 /* Draw 4bit BMP */
charliex 0:8f8765c8b7bd 224 /*-------------------------------------------------------------------*/
charliex 0:8f8765c8b7bd 225 bool draw_bmp_4bpp(const unsigned char *imgdata, int x, int y)
charliex 0:8f8765c8b7bd 226 {
charliex 0:8f8765c8b7bd 227 BITMAPFILEHEADER *bf = (BITMAPFILEHEADER *)imgdata;
charliex 0:8f8765c8b7bd 228 BITMAPINFOHEADER *bi = (BITMAPINFOHEADER *)(imgdata + sizeof(BITMAPFILEHEADER));
charliex 0:8f8765c8b7bd 229
charliex 0:8f8765c8b7bd 230 if (bi->biBitCount != 4)
charliex 0:8f8765c8b7bd 231 {
charliex 0:8f8765c8b7bd 232 return false;
charliex 0:8f8765c8b7bd 233 }
charliex 0:8f8765c8b7bd 234
charliex 0:8f8765c8b7bd 235 unsigned char *pRGBPal = (unsigned char*)imgdata + sizeof(BITMAPFILEHEADER) + bi->biSize;
charliex 0:8f8765c8b7bd 236 unsigned short palette[16];
charliex 0:8f8765c8b7bd 237
charliex 0:8f8765c8b7bd 238 for (int i = 0; pRGBPal < imgdata + bf->bfOffBits && i < 16; ++i)
charliex 0:8f8765c8b7bd 239 {
charliex 0:8f8765c8b7bd 240 unsigned short r,g,b;
charliex 0:8f8765c8b7bd 241 b = *pRGBPal++ >> 3;
charliex 0:8f8765c8b7bd 242 g = *pRGBPal++ >> 2;
charliex 0:8f8765c8b7bd 243 r = *pRGBPal++ >> 3;
charliex 0:8f8765c8b7bd 244 pRGBPal++;
charliex 0:8f8765c8b7bd 245 palette[i] = ((g & 7) << 13) | (b << 8) | (r << 3) | (g >> 3);
charliex 0:8f8765c8b7bd 246 }
charliex 0:8f8765c8b7bd 247
charliex 0:8f8765c8b7bd 248 unsigned short HLine[320];
charliex 0:8f8765c8b7bd 249 int linesize = (bi->biWidth / 2 + 3) & 0xfffc;
charliex 0:8f8765c8b7bd 250
charliex 0:8f8765c8b7bd 251 tft_set_window(x, y, x + bi->biWidth - 1, y + bi->biHeight - 1);
charliex 0:8f8765c8b7bd 252
charliex 0:8f8765c8b7bd 253 unsigned char *bmp;
charliex 0:8f8765c8b7bd 254
charliex 0:8f8765c8b7bd 255 for (int y = bi->biHeight - 1; y >= 0; --y)
charliex 0:8f8765c8b7bd 256 {
charliex 0:8f8765c8b7bd 257 bmp = (unsigned char *)imgdata + bf->bfOffBits + y * linesize;
charliex 0:8f8765c8b7bd 258
charliex 0:8f8765c8b7bd 259 for (int x = 0; x < bi->biWidth; ++x)
charliex 0:8f8765c8b7bd 260 {
charliex 0:8f8765c8b7bd 261 char pal;
charliex 0:8f8765c8b7bd 262 if (x & 1)
charliex 0:8f8765c8b7bd 263 {
charliex 0:8f8765c8b7bd 264 pal = *bmp & 0xf;
charliex 0:8f8765c8b7bd 265 bmp++;
charliex 0:8f8765c8b7bd 266 }
charliex 0:8f8765c8b7bd 267 else
charliex 0:8f8765c8b7bd 268 {
charliex 0:8f8765c8b7bd 269 pal = *bmp >> 4;
charliex 0:8f8765c8b7bd 270 }
charliex 0:8f8765c8b7bd 271
charliex 0:8f8765c8b7bd 272 HLine[x] = palette[pal];
charliex 0:8f8765c8b7bd 273 }
charliex 0:8f8765c8b7bd 274
charliex 0:8f8765c8b7bd 275 HAL_SPI_Transmit(&SpiHandle, (uint8_t *)HLine, bi->biWidth * 2, 100);
charliex 0:8f8765c8b7bd 276 }
charliex 0:8f8765c8b7bd 277
charliex 0:8f8765c8b7bd 278 return true;
charliex 0:8f8765c8b7bd 279 }
charliex 0:8f8765c8b7bd 280
charliex 0:8f8765c8b7bd 281 /*-------------------------------------------------------------------*/
charliex 0:8f8765c8b7bd 282 /* Initialize TFT */
charliex 0:8f8765c8b7bd 283 /*-------------------------------------------------------------------*/
charliex 0:8f8765c8b7bd 284 void tft_init(void)
charliex 0:8f8765c8b7bd 285 {
charliex 0:8f8765c8b7bd 286
charliex 0:8f8765c8b7bd 287 back=0;
charliex 0:8f8765c8b7bd 288 spi_init();
charliex 0:8f8765c8b7bd 289
charliex 0:8f8765c8b7bd 290 tft_reset();
charliex 0:8f8765c8b7bd 291 }
charliex 0:8f8765c8b7bd 292
charliex 0:8f8765c8b7bd 293
charliex 0:8f8765c8b7bd 294
charliex 0:8f8765c8b7bd 295