Ian Weston / ILI9340_Driver_Lib Featured

V1.1 of the ILI9340 driver for SPI with integrated graphics functions.

Dependents:   ILI9340_Driver SDCard_Aitendo_2p2TFT TFT22ok_test_ILI9340_Driver

This driver will drive any display that uses an ILI9340 display controller in SPI mode - such as the adafruits 2.2" 240 x 320 display found here: http://www.adafruit.com/products/1480

All this code has been ported from other peoples hard work - Thanks to All !

ILI9340_Driver.cpp@0:ea46340642a9, 2014-05-27 (annotated)

Committer:
dextorslabs
Date:
Tue May 27 19:40:20 2014 +0000
Revision:
0:ea46340642a9
Child:
1:216d35e347b8
V1.0 of the ILI9340 Driver and graphics library.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
dextorslabs 0:ea46340642a9 1 /***************************************************************
dextorslabs 0:ea46340642a9 2 ILI9340_Driver v1.0 26.05.14 Ian Weston
dextorslabs 0:ea46340642a9 3
dextorslabs 0:ea46340642a9 4 Driver and integrated graphics library for displays that use the
dextorslabs 0:ea46340642a9 5 ILI9340 controller in SPI mode.
dextorslabs 0:ea46340642a9 6
dextorslabs 0:ea46340642a9 7 The code was prted from several sources, the driver section
dextorslabs 0:ea46340642a9 8 was completely ported from the Adafruits Arduino source code, and
dextorslabs 0:ea46340642a9 9 the graphics functions were ported from the Adafruits GFX library
dextorslabs 0:ea46340642a9 10 and some elements were ported from code by Elmicros seeduio port.
dextorslabs 0:ea46340642a9 11
dextorslabs 0:ea46340642a9 12 Future revisions will include more advanced graphics functions.
dextorslabs 0:ea46340642a9 13
dextorslabs 0:ea46340642a9 14 ***************************************************************/
dextorslabs 0:ea46340642a9 15
dextorslabs 0:ea46340642a9 16
dextorslabs 0:ea46340642a9 17 #include "mbed.h"
dextorslabs 0:ea46340642a9 18 #include "ILI9340_Driver.h"
dextorslabs 0:ea46340642a9 19 #include "SimpleFont.cpp"
dextorslabs 0:ea46340642a9 20
dextorslabs 0:ea46340642a9 21
dextorslabs 0:ea46340642a9 22 // Constructor, assigns the pins to the SPI object, set orientation, and sets screen dims.
dextorslabs 0:ea46340642a9 23 ILI9340_Display::ILI9340_Display(PinName mosi, PinName miso, PinName sclk, PinName cs, PinName rst, PinName dc)
dextorslabs 0:ea46340642a9 24 : spi(mosi, miso, sclk), cs(cs), rst(rst), dc(dc) {
dextorslabs 0:ea46340642a9 25 _height = _TFTHEIGHT;
dextorslabs 0:ea46340642a9 26 _width = _TFTWIDTH;
dextorslabs 0:ea46340642a9 27 orientation = 0;
dextorslabs 0:ea46340642a9 28 }
dextorslabs 0:ea46340642a9 29
dextorslabs 0:ea46340642a9 30
dextorslabs 0:ea46340642a9 31 // Command writing code
dextorslabs 0:ea46340642a9 32 void ILI9340_Display::WriteCommand(uint8_t command) {
dextorslabs 0:ea46340642a9 33 dc = 0;
dextorslabs 0:ea46340642a9 34 cs = 0;
dextorslabs 0:ea46340642a9 35 spi.write(command);
dextorslabs 0:ea46340642a9 36 cs = 1;
dextorslabs 0:ea46340642a9 37 }
dextorslabs 0:ea46340642a9 38
dextorslabs 0:ea46340642a9 39
dextorslabs 0:ea46340642a9 40 // Data writing code
dextorslabs 0:ea46340642a9 41 void ILI9340_Display::WriteData(uint8_t data) {
dextorslabs 0:ea46340642a9 42 cs = 0;
dextorslabs 0:ea46340642a9 43 dc = 1;
dextorslabs 0:ea46340642a9 44 spi.write(data);
dextorslabs 0:ea46340642a9 45 cs = 1;
dextorslabs 0:ea46340642a9 46 }
dextorslabs 0:ea46340642a9 47
dextorslabs 0:ea46340642a9 48
dextorslabs 0:ea46340642a9 49 // Initilise the display
dextorslabs 0:ea46340642a9 50 void ILI9340_Display::DispInit(void) {
dextorslabs 0:ea46340642a9 51 //CtrlOutput();
dextorslabs 0:ea46340642a9 52
dextorslabs 0:ea46340642a9 53 rst = 0;
dextorslabs 0:ea46340642a9 54
dextorslabs 0:ea46340642a9 55 // Setup the spi for 8 bit data, high steady state clock,
dextorslabs 0:ea46340642a9 56 // second edge capture, with a 1MHz clock rate
dextorslabs 0:ea46340642a9 57 //spi.format(8,3);
dextorslabs 0:ea46340642a9 58 spi.frequency(24000000); // actually seems to work up to about 20Mhz... way better than the 8mhz as std.
dextorslabs 0:ea46340642a9 59
dextorslabs 0:ea46340642a9 60 // Toggle rst to reset
dextorslabs 0:ea46340642a9 61 rst = 1;
dextorslabs 0:ea46340642a9 62 wait(0.005);
dextorslabs 0:ea46340642a9 63 rst = 0;
dextorslabs 0:ea46340642a9 64 wait(0.020);
dextorslabs 0:ea46340642a9 65 rst = 1;
dextorslabs 0:ea46340642a9 66 wait(0.150);
dextorslabs 0:ea46340642a9 67
dextorslabs 0:ea46340642a9 68 WriteCommand(0xEF);
dextorslabs 0:ea46340642a9 69 WriteData(0x03);
dextorslabs 0:ea46340642a9 70 WriteData(0x80);
dextorslabs 0:ea46340642a9 71 WriteData(0x02);
dextorslabs 0:ea46340642a9 72
dextorslabs 0:ea46340642a9 73 WriteCommand(0xCF);
dextorslabs 0:ea46340642a9 74 WriteData(0x00);
dextorslabs 0:ea46340642a9 75 WriteData(0xC1);
dextorslabs 0:ea46340642a9 76 WriteData(0x30);
dextorslabs 0:ea46340642a9 77
dextorslabs 0:ea46340642a9 78 WriteCommand(0xED);
dextorslabs 0:ea46340642a9 79 WriteData(0x64);
dextorslabs 0:ea46340642a9 80 WriteData(0x03);
dextorslabs 0:ea46340642a9 81 WriteData(0x12);
dextorslabs 0:ea46340642a9 82 WriteData(0x81);
dextorslabs 0:ea46340642a9 83
dextorslabs 0:ea46340642a9 84 WriteCommand(0xE8);
dextorslabs 0:ea46340642a9 85 WriteData(0x85);
dextorslabs 0:ea46340642a9 86 WriteData(0x00);
dextorslabs 0:ea46340642a9 87 WriteData(0x78);
dextorslabs 0:ea46340642a9 88
dextorslabs 0:ea46340642a9 89 WriteCommand(0xCB);
dextorslabs 0:ea46340642a9 90 WriteData(0x39);
dextorslabs 0:ea46340642a9 91 WriteData(0x2C);
dextorslabs 0:ea46340642a9 92 WriteData(0x00);
dextorslabs 0:ea46340642a9 93 WriteData(0x34);
dextorslabs 0:ea46340642a9 94 WriteData(0x02);
dextorslabs 0:ea46340642a9 95
dextorslabs 0:ea46340642a9 96 WriteCommand(0xF7);
dextorslabs 0:ea46340642a9 97 WriteData(0x20);
dextorslabs 0:ea46340642a9 98
dextorslabs 0:ea46340642a9 99 WriteCommand(0xEA);
dextorslabs 0:ea46340642a9 100 WriteData(0x00);
dextorslabs 0:ea46340642a9 101 WriteData(0x00);
dextorslabs 0:ea46340642a9 102
dextorslabs 0:ea46340642a9 103 WriteCommand(ILI9340_PWCTR1); //Power control
dextorslabs 0:ea46340642a9 104 WriteData(0x23); //VRH[5:0]
dextorslabs 0:ea46340642a9 105
dextorslabs 0:ea46340642a9 106 WriteCommand(ILI9340_PWCTR2); //Power control
dextorslabs 0:ea46340642a9 107 WriteData(0x10); //SAP[2:0];BT[3:0]
dextorslabs 0:ea46340642a9 108
dextorslabs 0:ea46340642a9 109 WriteCommand(ILI9340_VMCTR1); //VCM control
dextorslabs 0:ea46340642a9 110 WriteData(0x3e); //�Աȶȵ���
dextorslabs 0:ea46340642a9 111 WriteData(0x28);
dextorslabs 0:ea46340642a9 112
dextorslabs 0:ea46340642a9 113 WriteCommand(ILI9340_VMCTR2); //VCM control2
dextorslabs 0:ea46340642a9 114 WriteData(0x86); //--
dextorslabs 0:ea46340642a9 115
dextorslabs 0:ea46340642a9 116 WriteCommand(ILI9340_MADCTL); // Memory Access Control
dextorslabs 0:ea46340642a9 117 WriteData(ILI9340_MADCTL_MX | ILI9340_MADCTL_BGR);
dextorslabs 0:ea46340642a9 118
dextorslabs 0:ea46340642a9 119 WriteCommand(ILI9340_PIXFMT);
dextorslabs 0:ea46340642a9 120 WriteData(0x55);
dextorslabs 0:ea46340642a9 121
dextorslabs 0:ea46340642a9 122 WriteCommand(ILI9340_FRMCTR1);
dextorslabs 0:ea46340642a9 123 WriteData(0x00);
dextorslabs 0:ea46340642a9 124 WriteData(0x18);
dextorslabs 0:ea46340642a9 125
dextorslabs 0:ea46340642a9 126 WriteCommand(ILI9340_DFUNCTR); // Display Function Control
dextorslabs 0:ea46340642a9 127 WriteData(0x08);
dextorslabs 0:ea46340642a9 128 WriteData(0x82);
dextorslabs 0:ea46340642a9 129 WriteData(0x27);
dextorslabs 0:ea46340642a9 130
dextorslabs 0:ea46340642a9 131 WriteCommand(0xF2); // 3Gamma Function Disable
dextorslabs 0:ea46340642a9 132 WriteData(0x00);
dextorslabs 0:ea46340642a9 133
dextorslabs 0:ea46340642a9 134 WriteCommand(ILI9340_GAMMASET); //Gamma curve selected
dextorslabs 0:ea46340642a9 135 WriteData(0x01);
dextorslabs 0:ea46340642a9 136
dextorslabs 0:ea46340642a9 137 WriteCommand(ILI9340_GMCTRP1); //Set Gamma
dextorslabs 0:ea46340642a9 138 WriteData(0x0F);
dextorslabs 0:ea46340642a9 139 WriteData(0x31);
dextorslabs 0:ea46340642a9 140 WriteData(0x2B);
dextorslabs 0:ea46340642a9 141 WriteData(0x0C);
dextorslabs 0:ea46340642a9 142 WriteData(0x0E);
dextorslabs 0:ea46340642a9 143 WriteData(0x08);
dextorslabs 0:ea46340642a9 144 WriteData(0x4E);
dextorslabs 0:ea46340642a9 145 WriteData(0xF1);
dextorslabs 0:ea46340642a9 146 WriteData(0x37);
dextorslabs 0:ea46340642a9 147 WriteData(0x07);
dextorslabs 0:ea46340642a9 148 WriteData(0x10);
dextorslabs 0:ea46340642a9 149 WriteData(0x03);
dextorslabs 0:ea46340642a9 150 WriteData(0x0E);
dextorslabs 0:ea46340642a9 151 WriteData(0x09);
dextorslabs 0:ea46340642a9 152 WriteData(0x00);
dextorslabs 0:ea46340642a9 153
dextorslabs 0:ea46340642a9 154 WriteCommand(ILI9340_GMCTRN1); //Set Gamma
dextorslabs 0:ea46340642a9 155 WriteData(0x00);
dextorslabs 0:ea46340642a9 156 WriteData(0x0E);
dextorslabs 0:ea46340642a9 157 WriteData(0x14);
dextorslabs 0:ea46340642a9 158 WriteData(0x03);
dextorslabs 0:ea46340642a9 159 WriteData(0x11);
dextorslabs 0:ea46340642a9 160 WriteData(0x07);
dextorslabs 0:ea46340642a9 161 WriteData(0x31);
dextorslabs 0:ea46340642a9 162 WriteData(0xC1);
dextorslabs 0:ea46340642a9 163 WriteData(0x48);
dextorslabs 0:ea46340642a9 164 WriteData(0x08);
dextorslabs 0:ea46340642a9 165 WriteData(0x0F);
dextorslabs 0:ea46340642a9 166 WriteData(0x0C);
dextorslabs 0:ea46340642a9 167 WriteData(0x31);
dextorslabs 0:ea46340642a9 168 WriteData(0x36);
dextorslabs 0:ea46340642a9 169 WriteData(0x0F);
dextorslabs 0:ea46340642a9 170
dextorslabs 0:ea46340642a9 171 WriteCommand(ILI9340_SLPOUT); //Exit Sleep
dextorslabs 0:ea46340642a9 172 wait(0.120);
dextorslabs 0:ea46340642a9 173 WriteCommand(ILI9340_DISPON); //Display on
dextorslabs 0:ea46340642a9 174
dextorslabs 0:ea46340642a9 175 }
dextorslabs 0:ea46340642a9 176
dextorslabs 0:ea46340642a9 177
dextorslabs 0:ea46340642a9 178 // Sets the rotation of the display
dextorslabs 0:ea46340642a9 179 void ILI9340_Display::SetRotation(uint8_t m) {
dextorslabs 0:ea46340642a9 180
dextorslabs 0:ea46340642a9 181 WriteCommand(ILI9340_MADCTL);
dextorslabs 0:ea46340642a9 182 orientation = m % 4; // can't be higher than 3
dextorslabs 0:ea46340642a9 183
dextorslabs 0:ea46340642a9 184 switch (orientation) {
dextorslabs 0:ea46340642a9 185 case 0:
dextorslabs 0:ea46340642a9 186 WriteData(ILI9340_MADCTL_MX | ILI9340_MADCTL_BGR);
dextorslabs 0:ea46340642a9 187 _width = _TFTWIDTH;
dextorslabs 0:ea46340642a9 188 _height = _TFTHEIGHT;
dextorslabs 0:ea46340642a9 189 break;
dextorslabs 0:ea46340642a9 190 case 1:
dextorslabs 0:ea46340642a9 191 WriteData(ILI9340_MADCTL_MV | ILI9340_MADCTL_BGR);
dextorslabs 0:ea46340642a9 192 _width = _TFTHEIGHT;
dextorslabs 0:ea46340642a9 193 _height = _TFTWIDTH;
dextorslabs 0:ea46340642a9 194 break;
dextorslabs 0:ea46340642a9 195 case 2:
dextorslabs 0:ea46340642a9 196 WriteData(ILI9340_MADCTL_MY | ILI9340_MADCTL_BGR);
dextorslabs 0:ea46340642a9 197 _width = _TFTWIDTH;
dextorslabs 0:ea46340642a9 198 _height = _TFTHEIGHT;
dextorslabs 0:ea46340642a9 199 break;
dextorslabs 0:ea46340642a9 200 case 3:
dextorslabs 0:ea46340642a9 201 WriteData(ILI9340_MADCTL_MV | ILI9340_MADCTL_MY | ILI9340_MADCTL_MX | ILI9340_MADCTL_BGR);
dextorslabs 0:ea46340642a9 202 _width = _TFTHEIGHT;
dextorslabs 0:ea46340642a9 203 _height = _TFTWIDTH;
dextorslabs 0:ea46340642a9 204 break;
dextorslabs 0:ea46340642a9 205 }
dextorslabs 0:ea46340642a9 206 }
dextorslabs 0:ea46340642a9 207
dextorslabs 0:ea46340642a9 208
dextorslabs 0:ea46340642a9 209 // Invert the colours of the display in hardware
dextorslabs 0:ea46340642a9 210 void ILI9340_Display::InvertDisplay(bool i) {
dextorslabs 0:ea46340642a9 211 WriteCommand(i ? ILI9340_INVON : ILI9340_INVOFF);
dextorslabs 0:ea46340642a9 212 }
dextorslabs 0:ea46340642a9 213
dextorslabs 0:ea46340642a9 214
dextorslabs 0:ea46340642a9 215
dextorslabs 0:ea46340642a9 216 // Set address window for writing data to.
dextorslabs 0:ea46340642a9 217 void ILI9340_Display::SetAddrWindow(uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1) {
dextorslabs 0:ea46340642a9 218
dextorslabs 0:ea46340642a9 219 WriteCommand(ILI9340_CASET); // Column addr set
dextorslabs 0:ea46340642a9 220 WriteData(x0 >> 8);
dextorslabs 0:ea46340642a9 221 WriteData(x0 & 0xFF); // XSTART
dextorslabs 0:ea46340642a9 222 WriteData(x1 >> 8);
dextorslabs 0:ea46340642a9 223 WriteData(x1 & 0xFF); // XEND
dextorslabs 0:ea46340642a9 224
dextorslabs 0:ea46340642a9 225 WriteCommand(ILI9340_PASET); // Row addr set
dextorslabs 0:ea46340642a9 226 WriteData(y0>>8);
dextorslabs 0:ea46340642a9 227 WriteData(y0); // YSTART
dextorslabs 0:ea46340642a9 228 WriteData(y1>>8);
dextorslabs 0:ea46340642a9 229 WriteData(y1); // YEND
dextorslabs 0:ea46340642a9 230
dextorslabs 0:ea46340642a9 231 WriteCommand(ILI9340_RAMWR); // write to RAM
dextorslabs 0:ea46340642a9 232 }
dextorslabs 0:ea46340642a9 233
dextorslabs 0:ea46340642a9 234
dextorslabs 0:ea46340642a9 235
dextorslabs 0:ea46340642a9 236 // To draw the humble pixel
dextorslabs 0:ea46340642a9 237 void ILI9340_Display::DrawPixel(uint16_t x, uint16_t y, uint16_t colour) {
dextorslabs 0:ea46340642a9 238 if((x < 1) ||(x >= _width) || (y < 1) || (y >= _height)) return;
dextorslabs 0:ea46340642a9 239
dextorslabs 0:ea46340642a9 240 SetAddrWindow(x,y,x+1,y+1);
dextorslabs 0:ea46340642a9 241
dextorslabs 0:ea46340642a9 242 dc = 1;
dextorslabs 0:ea46340642a9 243 cs = 0;
dextorslabs 0:ea46340642a9 244
dextorslabs 0:ea46340642a9 245 spi.write(colour >> 8);
dextorslabs 0:ea46340642a9 246 spi.write(colour);
dextorslabs 0:ea46340642a9 247
dextorslabs 0:ea46340642a9 248 cs = 1;
dextorslabs 0:ea46340642a9 249 }
dextorslabs 0:ea46340642a9 250
dextorslabs 0:ea46340642a9 251
dextorslabs 0:ea46340642a9 252 // Fill the screen with a colour
dextorslabs 0:ea46340642a9 253 void ILI9340_Display::FillScreen(uint16_t colour) {
dextorslabs 0:ea46340642a9 254 SetAddrWindow(0,0,_width,_height);
dextorslabs 0:ea46340642a9 255
dextorslabs 0:ea46340642a9 256 dc = 1;
dextorslabs 0:ea46340642a9 257 cs = 0;
dextorslabs 0:ea46340642a9 258
dextorslabs 0:ea46340642a9 259 unsigned int total = _width * _height;
dextorslabs 0:ea46340642a9 260 unsigned int position = 0;
dextorslabs 0:ea46340642a9 261
dextorslabs 0:ea46340642a9 262 while (position < total) {
dextorslabs 0:ea46340642a9 263 spi.write(colour >> 8);
dextorslabs 0:ea46340642a9 264 spi.write(colour);
dextorslabs 0:ea46340642a9 265 position++;
dextorslabs 0:ea46340642a9 266 }
dextorslabs 0:ea46340642a9 267 cs = 1;
dextorslabs 0:ea46340642a9 268 }
dextorslabs 0:ea46340642a9 269
dextorslabs 0:ea46340642a9 270
dextorslabs 0:ea46340642a9 271 // Draws a vertical line fast
dextorslabs 0:ea46340642a9 272 void ILI9340_Display::DrawFastVLine(int16_t x, int16_t y, int16_t h, uint16_t colour) {
dextorslabs 0:ea46340642a9 273
dextorslabs 0:ea46340642a9 274 // Rudimentary clipping
dextorslabs 0:ea46340642a9 275 if((x >= _width) || (y >= _height)) return;
dextorslabs 0:ea46340642a9 276
dextorslabs 0:ea46340642a9 277 if((y+h-1) >= _height)
dextorslabs 0:ea46340642a9 278 h = _height-y;
dextorslabs 0:ea46340642a9 279
dextorslabs 0:ea46340642a9 280 SetAddrWindow(x, y, x, y+h-1);
dextorslabs 0:ea46340642a9 281
dextorslabs 0:ea46340642a9 282 uint8_t hi = colour >> 8, lo = colour;
dextorslabs 0:ea46340642a9 283
dextorslabs 0:ea46340642a9 284 dc = 1;
dextorslabs 0:ea46340642a9 285 cs = 0;
dextorslabs 0:ea46340642a9 286
dextorslabs 0:ea46340642a9 287 while (h--) {
dextorslabs 0:ea46340642a9 288 spi.write(hi);
dextorslabs 0:ea46340642a9 289 spi.write(lo);
dextorslabs 0:ea46340642a9 290 }
dextorslabs 0:ea46340642a9 291 cs = 1;
dextorslabs 0:ea46340642a9 292 }
dextorslabs 0:ea46340642a9 293
dextorslabs 0:ea46340642a9 294
dextorslabs 0:ea46340642a9 295 // Draws a horizontal line fast
dextorslabs 0:ea46340642a9 296 void ILI9340_Display::DrawFastHLine(int16_t x, int16_t y, int16_t w, uint16_t colour) {
dextorslabs 0:ea46340642a9 297
dextorslabs 0:ea46340642a9 298 // Rudimentary clipping
dextorslabs 0:ea46340642a9 299 if((x >= _width) || (y >= _height)) return;
dextorslabs 0:ea46340642a9 300 if((x+w-1) >= _height) w = _width-x;
dextorslabs 0:ea46340642a9 301 SetAddrWindow(x, y, x+w-1, y);
dextorslabs 0:ea46340642a9 302
dextorslabs 0:ea46340642a9 303 uint8_t hi = colour >> 8, lo = colour;
dextorslabs 0:ea46340642a9 304 dc = 1;
dextorslabs 0:ea46340642a9 305 cs = 0;
dextorslabs 0:ea46340642a9 306 while (w--) {
dextorslabs 0:ea46340642a9 307 spi.write(hi);
dextorslabs 0:ea46340642a9 308 spi.write(lo);
dextorslabs 0:ea46340642a9 309 }
dextorslabs 0:ea46340642a9 310 cs = 1;
dextorslabs 0:ea46340642a9 311 }
dextorslabs 0:ea46340642a9 312
dextorslabs 0:ea46340642a9 313
dextorslabs 0:ea46340642a9 314 // Draws a filled rectangle
dextorslabs 0:ea46340642a9 315 void ILI9340_Display::FillRect(int16_t x, int16_t y, int16_t w, int16_t h, uint16_t colour) {
dextorslabs 0:ea46340642a9 316
dextorslabs 0:ea46340642a9 317 // rudimentary clipping (drawChar w/big text requires this)
dextorslabs 0:ea46340642a9 318 if((x >= _width) || (y >= _height)) return;
dextorslabs 0:ea46340642a9 319 if((x + w - 1) >= _width) w = _width - x;
dextorslabs 0:ea46340642a9 320 if((y + h - 1) >= _height) h = _height - y;
dextorslabs 0:ea46340642a9 321
dextorslabs 0:ea46340642a9 322 SetAddrWindow(x, y, x+w-1, y+h-1);
dextorslabs 0:ea46340642a9 323
dextorslabs 0:ea46340642a9 324 uint8_t hi = colour >> 8, lo = colour;
dextorslabs 0:ea46340642a9 325
dextorslabs 0:ea46340642a9 326 dc = 1;
dextorslabs 0:ea46340642a9 327 cs = 0;
dextorslabs 0:ea46340642a9 328
dextorslabs 0:ea46340642a9 329 for(y=h; y>0; y--) {
dextorslabs 0:ea46340642a9 330 for(x=w; x>0; x--) {
dextorslabs 0:ea46340642a9 331 spi.write(hi);
dextorslabs 0:ea46340642a9 332 spi.write(lo);
dextorslabs 0:ea46340642a9 333 }
dextorslabs 0:ea46340642a9 334 }
dextorslabs 0:ea46340642a9 335 cs = 1;
dextorslabs 0:ea46340642a9 336 }
dextorslabs 0:ea46340642a9 337
dextorslabs 0:ea46340642a9 338
dextorslabs 0:ea46340642a9 339
dextorslabs 0:ea46340642a9 340 // Draw an unfilled rectangle
dextorslabs 0:ea46340642a9 341 void ILI9340_Display::DrawRect(int16_t x, int16_t y, int16_t w, int16_t h, uint16_t color){
dextorslabs 0:ea46340642a9 342 DrawFastHLine(x, y, w, color);
dextorslabs 0:ea46340642a9 343 DrawFastHLine(x, y+h-1, w, color);
dextorslabs 0:ea46340642a9 344 DrawFastVLine(x, y, h, color);
dextorslabs 0:ea46340642a9 345 DrawFastVLine(x+w-1, y, h, color);
dextorslabs 0:ea46340642a9 346 }
dextorslabs 0:ea46340642a9 347
dextorslabs 0:ea46340642a9 348
dextorslabs 0:ea46340642a9 349 // draw an unfilled circle
dextorslabs 0:ea46340642a9 350 void ILI9340_Display::DrawCircle(int16_t x0, int16_t y0, int16_t r, uint16_t colour){
dextorslabs 0:ea46340642a9 351 int16_t f = 1 - r;
dextorslabs 0:ea46340642a9 352 int16_t ddF_x = 1;
dextorslabs 0:ea46340642a9 353 int16_t ddF_y = -2 * r;
dextorslabs 0:ea46340642a9 354 int16_t x = 0;
dextorslabs 0:ea46340642a9 355 int16_t y = r;
dextorslabs 0:ea46340642a9 356
dextorslabs 0:ea46340642a9 357 DrawPixel(x0 , y0+r, colour);
dextorslabs 0:ea46340642a9 358 DrawPixel(x0 , y0-r, colour);
dextorslabs 0:ea46340642a9 359 DrawPixel(x0+r, y0 , colour);
dextorslabs 0:ea46340642a9 360 DrawPixel(x0-r, y0 , colour);
dextorslabs 0:ea46340642a9 361
dextorslabs 0:ea46340642a9 362 while (x<y) {
dextorslabs 0:ea46340642a9 363 if (f >= 0) {
dextorslabs 0:ea46340642a9 364 y--;
dextorslabs 0:ea46340642a9 365 ddF_y += 2;
dextorslabs 0:ea46340642a9 366 f += ddF_y;
dextorslabs 0:ea46340642a9 367 }
dextorslabs 0:ea46340642a9 368 x++;
dextorslabs 0:ea46340642a9 369 ddF_x += 2;
dextorslabs 0:ea46340642a9 370 f += ddF_x;
dextorslabs 0:ea46340642a9 371
dextorslabs 0:ea46340642a9 372 DrawPixel(x0 + x, y0 + y, colour);
dextorslabs 0:ea46340642a9 373 DrawPixel(x0 - x, y0 + y, colour);
dextorslabs 0:ea46340642a9 374 DrawPixel(x0 + x, y0 - y, colour);
dextorslabs 0:ea46340642a9 375 DrawPixel(x0 - x, y0 - y, colour);
dextorslabs 0:ea46340642a9 376 DrawPixel(x0 + y, y0 + x, colour);
dextorslabs 0:ea46340642a9 377 DrawPixel(x0 - y, y0 + x, colour);
dextorslabs 0:ea46340642a9 378 DrawPixel(x0 + y, y0 - x, colour);
dextorslabs 0:ea46340642a9 379 DrawPixel(x0 - y, y0 - x, colour);
dextorslabs 0:ea46340642a9 380 }
dextorslabs 0:ea46340642a9 381 }
dextorslabs 0:ea46340642a9 382
dextorslabs 0:ea46340642a9 383
dextorslabs 0:ea46340642a9 384 // Pass 8-bit (each) R,G,B, get back 16-bit packed color
dextorslabs 0:ea46340642a9 385 uint16_t ILI9340_Display::Colour565(uint8_t r, uint8_t g, uint8_t b) {
dextorslabs 0:ea46340642a9 386 return ((r & 0xF8) << 8) | ((g & 0xFC) << 3) | (b >> 3);
dextorslabs 0:ea46340642a9 387 }
dextorslabs 0:ea46340642a9 388
dextorslabs 0:ea46340642a9 389
dextorslabs 0:ea46340642a9 390 // Writes an ascii character to the display
dextorslabs 0:ea46340642a9 391 void ILI9340_Display::DrawAscii(unsigned char ascii, uint16_t x, uint16_t y, uint16_t size, uint16_t colour) {
dextorslabs 0:ea46340642a9 392 SetAddrWindow(x, y, x+size, y+size);
dextorslabs 0:ea46340642a9 393
dextorslabs 0:ea46340642a9 394 if( (ascii < 0x20) || (ascii > 0x7e) ) //check for valid ASCII char
dextorslabs 0:ea46340642a9 395 {
dextorslabs 0:ea46340642a9 396 ascii = '?'; //char not supported
dextorslabs 0:ea46340642a9 397 }
dextorslabs 0:ea46340642a9 398 for(unsigned char i=0; i<8; i++)
dextorslabs 0:ea46340642a9 399 {
dextorslabs 0:ea46340642a9 400 unsigned char temp = simpleFont[ascii - 0x20][i];
dextorslabs 0:ea46340642a9 401 for(unsigned char f=0; f<8; f++)
dextorslabs 0:ea46340642a9 402 {
dextorslabs 0:ea46340642a9 403 if( (temp>>f) & 0x01 )
dextorslabs 0:ea46340642a9 404 {
dextorslabs 0:ea46340642a9 405 switch(orientation)
dextorslabs 0:ea46340642a9 406 {
dextorslabs 0:ea46340642a9 407 case '0':
dextorslabs 0:ea46340642a9 408 FillRect(x+f*size, y-i*size, size, size, colour);
dextorslabs 0:ea46340642a9 409 break;
dextorslabs 0:ea46340642a9 410 case '1':
dextorslabs 0:ea46340642a9 411 FillRect(x-i*size, x-f*size, size, size, colour);
dextorslabs 0:ea46340642a9 412 break;
dextorslabs 0:ea46340642a9 413 case '2':
dextorslabs 0:ea46340642a9 414 FillRect(x-f*size, y+i*size, size, size, colour);
dextorslabs 0:ea46340642a9 415 break;
dextorslabs 0:ea46340642a9 416 case '3':
dextorslabs 0:ea46340642a9 417 default:
dextorslabs 0:ea46340642a9 418 FillRect(x+i*size, y+f*size, size, size, colour);
dextorslabs 0:ea46340642a9 419 }
dextorslabs 0:ea46340642a9 420 }
dextorslabs 0:ea46340642a9 421 }
dextorslabs 0:ea46340642a9 422 }
dextorslabs 0:ea46340642a9 423 }
dextorslabs 0:ea46340642a9 424
dextorslabs 0:ea46340642a9 425
dextorslabs 0:ea46340642a9 426 // Writes a character array to the display
dextorslabs 0:ea46340642a9 427 void ILI9340_Display::DrawString(char *string, uint16_t x, uint16_t y, uint8_t size, uint16_t colour)
dextorslabs 0:ea46340642a9 428 {
dextorslabs 0:ea46340642a9 429 while(*string)
dextorslabs 0:ea46340642a9 430 {
dextorslabs 0:ea46340642a9 431 DrawAscii(*string, x, y, size, colour);
dextorslabs 0:ea46340642a9 432 *string++;
dextorslabs 0:ea46340642a9 433 switch(orientation)
dextorslabs 0:ea46340642a9 434 {
dextorslabs 0:ea46340642a9 435 case '0':
dextorslabs 0:ea46340642a9 436 if(y > 0) y-=8*size; //Change position to next char
dextorslabs 0:ea46340642a9 437 break;
dextorslabs 0:ea46340642a9 438 case '1':
dextorslabs 0:ea46340642a9 439 if(x > 0) x-=8*size;
dextorslabs 0:ea46340642a9 440 break;
dextorslabs 0:ea46340642a9 441 case '2':
dextorslabs 0:ea46340642a9 442 if(y < _height) y+=8*size;
dextorslabs 0:ea46340642a9 443 break;
dextorslabs 0:ea46340642a9 444 case '3':
dextorslabs 0:ea46340642a9 445 default:
dextorslabs 0:ea46340642a9 446 if(x < _width) x+=8*size;
dextorslabs 0:ea46340642a9 447 }
dextorslabs 0:ea46340642a9 448 }
dextorslabs 0:ea46340642a9 449 }
dextorslabs 0:ea46340642a9 450
dextorslabs 0:ea46340642a9 451 // Converts integers into a character array
dextorslabs 0:ea46340642a9 452 void ILI9340_Display::IntToChars (char* buffer, int value, uint8_t spaceonbuffer, uint8_t countbase, uint16_t x, uint16_t y, uint8_t size, uint16_t colour) {
dextorslabs 0:ea46340642a9 453 int workvalue = value;
dextorslabs 0:ea46340642a9 454 int i;
dextorslabs 0:ea46340642a9 455 int valuetowrite;
dextorslabs 0:ea46340642a9 456 int end_i = 0;
dextorslabs 0:ea46340642a9 457
dextorslabs 0:ea46340642a9 458 if (value < 0)
dextorslabs 0:ea46340642a9 459 {
dextorslabs 0:ea46340642a9 460 workvalue = -value;
dextorslabs 0:ea46340642a9 461 end_i = 1;
dextorslabs 0:ea46340642a9 462 buffer[0] = '-';
dextorslabs 0:ea46340642a9 463 }
dextorslabs 0:ea46340642a9 464
dextorslabs 0:ea46340642a9 465 for (i = spaceonbuffer - 1; i >= end_i; i--)
dextorslabs 0:ea46340642a9 466 {
dextorslabs 0:ea46340642a9 467 valuetowrite = (workvalue % countbase);
dextorslabs 0:ea46340642a9 468 if (workvalue == 0)
dextorslabs 0:ea46340642a9 469 {
dextorslabs 0:ea46340642a9 470 if (i == (spaceonbuffer - 1))
dextorslabs 0:ea46340642a9 471 {
dextorslabs 0:ea46340642a9 472 buffer[i] = 48; // ASCII 0
dextorslabs 0:ea46340642a9 473 } else {
dextorslabs 0:ea46340642a9 474 buffer[i] = 32; // ASCII SPACE
dextorslabs 0:ea46340642a9 475 }
dextorslabs 0:ea46340642a9 476 } else {
dextorslabs 0:ea46340642a9 477 if (valuetowrite > 9)
dextorslabs 0:ea46340642a9 478 {
dextorslabs 0:ea46340642a9 479 buffer[i] = valuetowrite + 55; // ASCII A-Z
dextorslabs 0:ea46340642a9 480 } else {
dextorslabs 0:ea46340642a9 481 buffer[i] = valuetowrite + 48; // ASCII of that character
dextorslabs 0:ea46340642a9 482 }
dextorslabs 0:ea46340642a9 483 };
dextorslabs 0:ea46340642a9 484 workvalue = (workvalue - valuetowrite) / countbase;
dextorslabs 0:ea46340642a9 485 }
dextorslabs 0:ea46340642a9 486
dextorslabs 0:ea46340642a9 487 DrawString(buffer, x, y, size, colour);
dextorslabs 0:ea46340642a9 488 }
dextorslabs 0:ea46340642a9 489
dextorslabs 0:ea46340642a9 490
dextorslabs 0:ea46340642a9 491
dextorslabs 0:ea46340642a9 492 // Functional code to swap data contents of 16bit registers
dextorslabs 0:ea46340642a9 493 void ILI9340_Display::Swap(int16_t *a, int16_t *b) {
dextorslabs 0:ea46340642a9 494
dextorslabs 0:ea46340642a9 495 int16_t x = *a;
dextorslabs 0:ea46340642a9 496 *a = *b;
dextorslabs 0:ea46340642a9 497 *b = x;
dextorslabs 0:ea46340642a9 498 }
dextorslabs 0:ea46340642a9 499
dextorslabs 0:ea46340642a9 500
dextorslabs 0:ea46340642a9 501 // Draws a line with any length and orientation
dextorslabs 0:ea46340642a9 502 void ILI9340_Display::DrawLine(int16_t x0, int16_t y0, int16_t x1, int16_t y1, uint16_t colour){
dextorslabs 0:ea46340642a9 503 int16_t steep = abs(y1 - y0) > abs(x1 - x0);
dextorslabs 0:ea46340642a9 504 if (steep) {
dextorslabs 0:ea46340642a9 505 Swap(&x0, &y0);
dextorslabs 0:ea46340642a9 506 Swap(&x1, &y1);
dextorslabs 0:ea46340642a9 507 }
dextorslabs 0:ea46340642a9 508
dextorslabs 0:ea46340642a9 509 if (x0 > x1) {
dextorslabs 0:ea46340642a9 510 Swap(&x0, &x1);
dextorslabs 0:ea46340642a9 511 Swap(&y0, &y1);
dextorslabs 0:ea46340642a9 512 }
dextorslabs 0:ea46340642a9 513
dextorslabs 0:ea46340642a9 514 int16_t dx, dy;
dextorslabs 0:ea46340642a9 515 dx = x1 - x0;
dextorslabs 0:ea46340642a9 516 dy = abs(y1 - y0);
dextorslabs 0:ea46340642a9 517
dextorslabs 0:ea46340642a9 518 int16_t err = dx / 2;
dextorslabs 0:ea46340642a9 519 int16_t ystep;
dextorslabs 0:ea46340642a9 520
dextorslabs 0:ea46340642a9 521 if (y0 < y1) {
dextorslabs 0:ea46340642a9 522 ystep = 1;
dextorslabs 0:ea46340642a9 523 } else {
dextorslabs 0:ea46340642a9 524 ystep = -1;
dextorslabs 0:ea46340642a9 525 }
dextorslabs 0:ea46340642a9 526
dextorslabs 0:ea46340642a9 527 for (; x0<=x1; x0++) {
dextorslabs 0:ea46340642a9 528 if (steep) {
dextorslabs 0:ea46340642a9 529 DrawPixel(y0, x0, colour);
dextorslabs 0:ea46340642a9 530 } else {
dextorslabs 0:ea46340642a9 531 DrawPixel(x0, y0, colour);
dextorslabs 0:ea46340642a9 532 }
dextorslabs 0:ea46340642a9 533 err -= dy;
dextorslabs 0:ea46340642a9 534 if (err < 0) {
dextorslabs 0:ea46340642a9 535 y0 += ystep;
dextorslabs 0:ea46340642a9 536 err += dx;
dextorslabs 0:ea46340642a9 537 }
dextorslabs 0:ea46340642a9 538 }
dextorslabs 0:ea46340642a9 539 }
dextorslabs 0:ea46340642a9 540
dextorslabs 0:ea46340642a9 541
dextorslabs 0:ea46340642a9 542
dextorslabs 0:ea46340642a9 543
dextorslabs 0:ea46340642a9 544
dextorslabs 0:ea46340642a9 545
dextorslabs 0:ea46340642a9 546
dextorslabs 0:ea46340642a9 547