Ian Weston / Mbed 2 deprecated ILI9340_Driver

Demo project to demonstrate that ILI9340 display driver and graphics library. very simple but a good starting point for any project using such a display. Please use this to thoroughly enjoy yourself and make your projects cool!

Dependencies:   ILI9340_Driver_Lib mbed

About the 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@0:9c462c65176a, 2014-05-26 (annotated)

Committer:
dextorslabs
Date:
Mon May 26 09:23:40 2014 +0000
Revision:
0:9c462c65176a
V1.0 of the integrated ILI9340 SPI display driver and graphics library.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
dextorslabs 0:9c462c65176a 1 /***************************************************************
dextorslabs 0:9c462c65176a 2 ILI9340_Driver v1.0 26.05.14 Ian Weston
dextorslabs 0:9c462c65176a 3
dextorslabs 0:9c462c65176a 4 Driver and integrated graphics library for displays that use the
dextorslabs 0:9c462c65176a 5 ILI9340 controller in SPI mode.
dextorslabs 0:9c462c65176a 6
dextorslabs 0:9c462c65176a 7 The code was prted from several sources, the driver section
dextorslabs 0:9c462c65176a 8 was completely ported from the Adafruits Arduino source code, and
dextorslabs 0:9c462c65176a 9 the graphics functions were ported from the Adafruits GFX library
dextorslabs 0:9c462c65176a 10 and some elements were ported from code by Elmicros seeduio port.
dextorslabs 0:9c462c65176a 11
dextorslabs 0:9c462c65176a 12 Future revisions will include more advanced graphics functions.
dextorslabs 0:9c462c65176a 13
dextorslabs 0:9c462c65176a 14 ***************************************************************/
dextorslabs 0:9c462c65176a 15
dextorslabs 0:9c462c65176a 16
dextorslabs 0:9c462c65176a 17 #include "mbed.h"
dextorslabs 0:9c462c65176a 18 #include "ILI9340_Driver.h"
dextorslabs 0:9c462c65176a 19 #include "SimpleFont.cpp"
dextorslabs 0:9c462c65176a 20
dextorslabs 0:9c462c65176a 21
dextorslabs 0:9c462c65176a 22 // Constructor, assigns the pins to the SPI object, set orientation, and sets screen dims.
dextorslabs 0:9c462c65176a 23 ILI9340_Display::ILI9340_Display(PinName mosi, PinName miso, PinName sclk, PinName cs, PinName rst, PinName dc)
dextorslabs 0:9c462c65176a 24 : spi(mosi, miso, sclk), cs(cs), rst(rst), dc(dc) {
dextorslabs 0:9c462c65176a 25 _height = _TFTHEIGHT;
dextorslabs 0:9c462c65176a 26 _width = _TFTWIDTH;
dextorslabs 0:9c462c65176a 27 orientation = 0;
dextorslabs 0:9c462c65176a 28 }
dextorslabs 0:9c462c65176a 29
dextorslabs 0:9c462c65176a 30
dextorslabs 0:9c462c65176a 31 // Command writing code
dextorslabs 0:9c462c65176a 32 void ILI9340_Display::WriteCommand(uint8_t command) {
dextorslabs 0:9c462c65176a 33 dc = 0;
dextorslabs 0:9c462c65176a 34 cs = 0;
dextorslabs 0:9c462c65176a 35 spi.write(command);
dextorslabs 0:9c462c65176a 36 cs = 1;
dextorslabs 0:9c462c65176a 37 }
dextorslabs 0:9c462c65176a 38
dextorslabs 0:9c462c65176a 39
dextorslabs 0:9c462c65176a 40 // Data writing code
dextorslabs 0:9c462c65176a 41 void ILI9340_Display::WriteData(uint8_t data) {
dextorslabs 0:9c462c65176a 42 cs = 0;
dextorslabs 0:9c462c65176a 43 dc = 1;
dextorslabs 0:9c462c65176a 44 spi.write(data);
dextorslabs 0:9c462c65176a 45 cs = 1;
dextorslabs 0:9c462c65176a 46 }
dextorslabs 0:9c462c65176a 47
dextorslabs 0:9c462c65176a 48
dextorslabs 0:9c462c65176a 49 // Initilise the display
dextorslabs 0:9c462c65176a 50 void ILI9340_Display::DispInit(void) {
dextorslabs 0:9c462c65176a 51 //CtrlOutput();
dextorslabs 0:9c462c65176a 52
dextorslabs 0:9c462c65176a 53 rst = 0;
dextorslabs 0:9c462c65176a 54
dextorslabs 0:9c462c65176a 55 // Setup the spi for 8 bit data, high steady state clock,
dextorslabs 0:9c462c65176a 56 // second edge capture, with a 1MHz clock rate
dextorslabs 0:9c462c65176a 57 //spi.format(8,3);
dextorslabs 0:9c462c65176a 58 spi.frequency(24000000); // actually seems to work up to about 20Mhz... way better than the 8mhz as std.
dextorslabs 0:9c462c65176a 59
dextorslabs 0:9c462c65176a 60 // Toggle rst to reset
dextorslabs 0:9c462c65176a 61 rst = 1;
dextorslabs 0:9c462c65176a 62 wait(0.005);
dextorslabs 0:9c462c65176a 63 rst = 0;
dextorslabs 0:9c462c65176a 64 wait(0.020);
dextorslabs 0:9c462c65176a 65 rst = 1;
dextorslabs 0:9c462c65176a 66 wait(0.150);
dextorslabs 0:9c462c65176a 67
dextorslabs 0:9c462c65176a 68 WriteCommand(0xEF);
dextorslabs 0:9c462c65176a 69 WriteData(0x03);
dextorslabs 0:9c462c65176a 70 WriteData(0x80);
dextorslabs 0:9c462c65176a 71 WriteData(0x02);
dextorslabs 0:9c462c65176a 72
dextorslabs 0:9c462c65176a 73 WriteCommand(0xCF);
dextorslabs 0:9c462c65176a 74 WriteData(0x00);
dextorslabs 0:9c462c65176a 75 WriteData(0xC1);
dextorslabs 0:9c462c65176a 76 WriteData(0x30);
dextorslabs 0:9c462c65176a 77
dextorslabs 0:9c462c65176a 78 WriteCommand(0xED);
dextorslabs 0:9c462c65176a 79 WriteData(0x64);
dextorslabs 0:9c462c65176a 80 WriteData(0x03);
dextorslabs 0:9c462c65176a 81 WriteData(0x12);
dextorslabs 0:9c462c65176a 82 WriteData(0x81);
dextorslabs 0:9c462c65176a 83
dextorslabs 0:9c462c65176a 84 WriteCommand(0xE8);
dextorslabs 0:9c462c65176a 85 WriteData(0x85);
dextorslabs 0:9c462c65176a 86 WriteData(0x00);
dextorslabs 0:9c462c65176a 87 WriteData(0x78);
dextorslabs 0:9c462c65176a 88
dextorslabs 0:9c462c65176a 89 WriteCommand(0xCB);
dextorslabs 0:9c462c65176a 90 WriteData(0x39);
dextorslabs 0:9c462c65176a 91 WriteData(0x2C);
dextorslabs 0:9c462c65176a 92 WriteData(0x00);
dextorslabs 0:9c462c65176a 93 WriteData(0x34);
dextorslabs 0:9c462c65176a 94 WriteData(0x02);
dextorslabs 0:9c462c65176a 95
dextorslabs 0:9c462c65176a 96 WriteCommand(0xF7);
dextorslabs 0:9c462c65176a 97 WriteData(0x20);
dextorslabs 0:9c462c65176a 98
dextorslabs 0:9c462c65176a 99 WriteCommand(0xEA);
dextorslabs 0:9c462c65176a 100 WriteData(0x00);
dextorslabs 0:9c462c65176a 101 WriteData(0x00);
dextorslabs 0:9c462c65176a 102
dextorslabs 0:9c462c65176a 103 WriteCommand(ILI9340_PWCTR1); //Power control
dextorslabs 0:9c462c65176a 104 WriteData(0x23); //VRH[5:0]
dextorslabs 0:9c462c65176a 105
dextorslabs 0:9c462c65176a 106 WriteCommand(ILI9340_PWCTR2); //Power control
dextorslabs 0:9c462c65176a 107 WriteData(0x10); //SAP[2:0];BT[3:0]
dextorslabs 0:9c462c65176a 108
dextorslabs 0:9c462c65176a 109 WriteCommand(ILI9340_VMCTR1); //VCM control
dextorslabs 0:9c462c65176a 110 WriteData(0x3e); //�Աȶȵ���
dextorslabs 0:9c462c65176a 111 WriteData(0x28);
dextorslabs 0:9c462c65176a 112
dextorslabs 0:9c462c65176a 113 WriteCommand(ILI9340_VMCTR2); //VCM control2
dextorslabs 0:9c462c65176a 114 WriteData(0x86); //--
dextorslabs 0:9c462c65176a 115
dextorslabs 0:9c462c65176a 116 WriteCommand(ILI9340_MADCTL); // Memory Access Control
dextorslabs 0:9c462c65176a 117 WriteData(ILI9340_MADCTL_MX | ILI9340_MADCTL_BGR);
dextorslabs 0:9c462c65176a 118
dextorslabs 0:9c462c65176a 119 WriteCommand(ILI9340_PIXFMT);
dextorslabs 0:9c462c65176a 120 WriteData(0x55);
dextorslabs 0:9c462c65176a 121
dextorslabs 0:9c462c65176a 122 WriteCommand(ILI9340_FRMCTR1);
dextorslabs 0:9c462c65176a 123 WriteData(0x00);
dextorslabs 0:9c462c65176a 124 WriteData(0x18);
dextorslabs 0:9c462c65176a 125
dextorslabs 0:9c462c65176a 126 WriteCommand(ILI9340_DFUNCTR); // Display Function Control
dextorslabs 0:9c462c65176a 127 WriteData(0x08);
dextorslabs 0:9c462c65176a 128 WriteData(0x82);
dextorslabs 0:9c462c65176a 129 WriteData(0x27);
dextorslabs 0:9c462c65176a 130
dextorslabs 0:9c462c65176a 131 WriteCommand(0xF2); // 3Gamma Function Disable
dextorslabs 0:9c462c65176a 132 WriteData(0x00);
dextorslabs 0:9c462c65176a 133
dextorslabs 0:9c462c65176a 134 WriteCommand(ILI9340_GAMMASET); //Gamma curve selected
dextorslabs 0:9c462c65176a 135 WriteData(0x01);
dextorslabs 0:9c462c65176a 136
dextorslabs 0:9c462c65176a 137 WriteCommand(ILI9340_GMCTRP1); //Set Gamma
dextorslabs 0:9c462c65176a 138 WriteData(0x0F);
dextorslabs 0:9c462c65176a 139 WriteData(0x31);
dextorslabs 0:9c462c65176a 140 WriteData(0x2B);
dextorslabs 0:9c462c65176a 141 WriteData(0x0C);
dextorslabs 0:9c462c65176a 142 WriteData(0x0E);
dextorslabs 0:9c462c65176a 143 WriteData(0x08);
dextorslabs 0:9c462c65176a 144 WriteData(0x4E);
dextorslabs 0:9c462c65176a 145 WriteData(0xF1);
dextorslabs 0:9c462c65176a 146 WriteData(0x37);
dextorslabs 0:9c462c65176a 147 WriteData(0x07);
dextorslabs 0:9c462c65176a 148 WriteData(0x10);
dextorslabs 0:9c462c65176a 149 WriteData(0x03);
dextorslabs 0:9c462c65176a 150 WriteData(0x0E);
dextorslabs 0:9c462c65176a 151 WriteData(0x09);
dextorslabs 0:9c462c65176a 152 WriteData(0x00);
dextorslabs 0:9c462c65176a 153
dextorslabs 0:9c462c65176a 154 WriteCommand(ILI9340_GMCTRN1); //Set Gamma
dextorslabs 0:9c462c65176a 155 WriteData(0x00);
dextorslabs 0:9c462c65176a 156 WriteData(0x0E);
dextorslabs 0:9c462c65176a 157 WriteData(0x14);
dextorslabs 0:9c462c65176a 158 WriteData(0x03);
dextorslabs 0:9c462c65176a 159 WriteData(0x11);
dextorslabs 0:9c462c65176a 160 WriteData(0x07);
dextorslabs 0:9c462c65176a 161 WriteData(0x31);
dextorslabs 0:9c462c65176a 162 WriteData(0xC1);
dextorslabs 0:9c462c65176a 163 WriteData(0x48);
dextorslabs 0:9c462c65176a 164 WriteData(0x08);
dextorslabs 0:9c462c65176a 165 WriteData(0x0F);
dextorslabs 0:9c462c65176a 166 WriteData(0x0C);
dextorslabs 0:9c462c65176a 167 WriteData(0x31);
dextorslabs 0:9c462c65176a 168 WriteData(0x36);
dextorslabs 0:9c462c65176a 169 WriteData(0x0F);
dextorslabs 0:9c462c65176a 170
dextorslabs 0:9c462c65176a 171 WriteCommand(ILI9340_SLPOUT); //Exit Sleep
dextorslabs 0:9c462c65176a 172 wait(0.120);
dextorslabs 0:9c462c65176a 173 WriteCommand(ILI9340_DISPON); //Display on
dextorslabs 0:9c462c65176a 174
dextorslabs 0:9c462c65176a 175 }
dextorslabs 0:9c462c65176a 176
dextorslabs 0:9c462c65176a 177
dextorslabs 0:9c462c65176a 178 // Sets the rotation of the display
dextorslabs 0:9c462c65176a 179 void ILI9340_Display::SetRotation(uint8_t m) {
dextorslabs 0:9c462c65176a 180
dextorslabs 0:9c462c65176a 181 WriteCommand(ILI9340_MADCTL);
dextorslabs 0:9c462c65176a 182 orientation = m % 4; // can't be higher than 3
dextorslabs 0:9c462c65176a 183
dextorslabs 0:9c462c65176a 184 switch (orientation) {
dextorslabs 0:9c462c65176a 185 case 0:
dextorslabs 0:9c462c65176a 186 WriteData(ILI9340_MADCTL_MX | ILI9340_MADCTL_BGR);
dextorslabs 0:9c462c65176a 187 _width = _TFTWIDTH;
dextorslabs 0:9c462c65176a 188 _height = _TFTHEIGHT;
dextorslabs 0:9c462c65176a 189 break;
dextorslabs 0:9c462c65176a 190 case 1:
dextorslabs 0:9c462c65176a 191 WriteData(ILI9340_MADCTL_MV | ILI9340_MADCTL_BGR);
dextorslabs 0:9c462c65176a 192 _width = _TFTHEIGHT;
dextorslabs 0:9c462c65176a 193 _height = _TFTWIDTH;
dextorslabs 0:9c462c65176a 194 break;
dextorslabs 0:9c462c65176a 195 case 2:
dextorslabs 0:9c462c65176a 196 WriteData(ILI9340_MADCTL_MY | ILI9340_MADCTL_BGR);
dextorslabs 0:9c462c65176a 197 _width = _TFTWIDTH;
dextorslabs 0:9c462c65176a 198 _height = _TFTHEIGHT;
dextorslabs 0:9c462c65176a 199 break;
dextorslabs 0:9c462c65176a 200 case 3:
dextorslabs 0:9c462c65176a 201 WriteData(ILI9340_MADCTL_MV | ILI9340_MADCTL_MY | ILI9340_MADCTL_MX | ILI9340_MADCTL_BGR);
dextorslabs 0:9c462c65176a 202 _width = _TFTHEIGHT;
dextorslabs 0:9c462c65176a 203 _height = _TFTWIDTH;
dextorslabs 0:9c462c65176a 204 break;
dextorslabs 0:9c462c65176a 205 }
dextorslabs 0:9c462c65176a 206 }
dextorslabs 0:9c462c65176a 207
dextorslabs 0:9c462c65176a 208
dextorslabs 0:9c462c65176a 209 // Invert the colours of the display in hardware
dextorslabs 0:9c462c65176a 210 void ILI9340_Display::InvertDisplay(bool i) {
dextorslabs 0:9c462c65176a 211 WriteCommand(i ? ILI9340_INVON : ILI9340_INVOFF);
dextorslabs 0:9c462c65176a 212 }
dextorslabs 0:9c462c65176a 213
dextorslabs 0:9c462c65176a 214
dextorslabs 0:9c462c65176a 215
dextorslabs 0:9c462c65176a 216 // Set address window for writing data to.
dextorslabs 0:9c462c65176a 217 void ILI9340_Display::SetAddrWindow(uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1) {
dextorslabs 0:9c462c65176a 218
dextorslabs 0:9c462c65176a 219 WriteCommand(ILI9340_CASET); // Column addr set
dextorslabs 0:9c462c65176a 220 WriteData(x0 >> 8);
dextorslabs 0:9c462c65176a 221 WriteData(x0 & 0xFF); // XSTART
dextorslabs 0:9c462c65176a 222 WriteData(x1 >> 8);
dextorslabs 0:9c462c65176a 223 WriteData(x1 & 0xFF); // XEND
dextorslabs 0:9c462c65176a 224
dextorslabs 0:9c462c65176a 225 WriteCommand(ILI9340_PASET); // Row addr set
dextorslabs 0:9c462c65176a 226 WriteData(y0>>8);
dextorslabs 0:9c462c65176a 227 WriteData(y0); // YSTART
dextorslabs 0:9c462c65176a 228 WriteData(y1>>8);
dextorslabs 0:9c462c65176a 229 WriteData(y1); // YEND
dextorslabs 0:9c462c65176a 230
dextorslabs 0:9c462c65176a 231 WriteCommand(ILI9340_RAMWR); // write to RAM
dextorslabs 0:9c462c65176a 232 }
dextorslabs 0:9c462c65176a 233
dextorslabs 0:9c462c65176a 234
dextorslabs 0:9c462c65176a 235
dextorslabs 0:9c462c65176a 236 // To draw the humble pixel
dextorslabs 0:9c462c65176a 237 void ILI9340_Display::DrawPixel(uint16_t x, uint16_t y, uint16_t colour) {
dextorslabs 0:9c462c65176a 238 if((x < 1) ||(x >= _width) || (y < 1) || (y >= _height)) return;
dextorslabs 0:9c462c65176a 239
dextorslabs 0:9c462c65176a 240 SetAddrWindow(x,y,x+1,y+1);
dextorslabs 0:9c462c65176a 241
dextorslabs 0:9c462c65176a 242 dc = 1;
dextorslabs 0:9c462c65176a 243 cs = 0;
dextorslabs 0:9c462c65176a 244
dextorslabs 0:9c462c65176a 245 spi.write(colour >> 8);
dextorslabs 0:9c462c65176a 246 spi.write(colour);
dextorslabs 0:9c462c65176a 247
dextorslabs 0:9c462c65176a 248 cs = 1;
dextorslabs 0:9c462c65176a 249 }
dextorslabs 0:9c462c65176a 250
dextorslabs 0:9c462c65176a 251
dextorslabs 0:9c462c65176a 252 // Fill the screen with a colour
dextorslabs 0:9c462c65176a 253 void ILI9340_Display::FillScreen(uint16_t colour) {
dextorslabs 0:9c462c65176a 254 SetAddrWindow(0,0,_width,_height);
dextorslabs 0:9c462c65176a 255
dextorslabs 0:9c462c65176a 256 dc = 1;
dextorslabs 0:9c462c65176a 257 cs = 0;
dextorslabs 0:9c462c65176a 258
dextorslabs 0:9c462c65176a 259 unsigned int total = _width * _height;
dextorslabs 0:9c462c65176a 260 unsigned int position = 0;
dextorslabs 0:9c462c65176a 261
dextorslabs 0:9c462c65176a 262 while (position < total) {
dextorslabs 0:9c462c65176a 263 spi.write(colour >> 8);
dextorslabs 0:9c462c65176a 264 spi.write(colour);
dextorslabs 0:9c462c65176a 265 position++;
dextorslabs 0:9c462c65176a 266 }
dextorslabs 0:9c462c65176a 267 cs = 1;
dextorslabs 0:9c462c65176a 268 }
dextorslabs 0:9c462c65176a 269
dextorslabs 0:9c462c65176a 270
dextorslabs 0:9c462c65176a 271 // Draws a vertical line fast
dextorslabs 0:9c462c65176a 272 void ILI9340_Display::DrawFastVLine(int16_t x, int16_t y, int16_t h, uint16_t colour) {
dextorslabs 0:9c462c65176a 273
dextorslabs 0:9c462c65176a 274 // Rudimentary clipping
dextorslabs 0:9c462c65176a 275 if((x >= _width) || (y >= _height)) return;
dextorslabs 0:9c462c65176a 276
dextorslabs 0:9c462c65176a 277 if((y+h-1) >= _height)
dextorslabs 0:9c462c65176a 278 h = _height-y;
dextorslabs 0:9c462c65176a 279
dextorslabs 0:9c462c65176a 280 SetAddrWindow(x, y, x, y+h-1);
dextorslabs 0:9c462c65176a 281
dextorslabs 0:9c462c65176a 282 uint8_t hi = colour >> 8, lo = colour;
dextorslabs 0:9c462c65176a 283
dextorslabs 0:9c462c65176a 284 dc = 1;
dextorslabs 0:9c462c65176a 285 cs = 0;
dextorslabs 0:9c462c65176a 286
dextorslabs 0:9c462c65176a 287 while (h--) {
dextorslabs 0:9c462c65176a 288 spi.write(hi);
dextorslabs 0:9c462c65176a 289 spi.write(lo);
dextorslabs 0:9c462c65176a 290 }
dextorslabs 0:9c462c65176a 291 cs = 1;
dextorslabs 0:9c462c65176a 292 }
dextorslabs 0:9c462c65176a 293
dextorslabs 0:9c462c65176a 294
dextorslabs 0:9c462c65176a 295 // Draws a horizontal line fast
dextorslabs 0:9c462c65176a 296 void ILI9340_Display::DrawFastHLine(int16_t x, int16_t y, int16_t w, uint16_t colour) {
dextorslabs 0:9c462c65176a 297
dextorslabs 0:9c462c65176a 298 // Rudimentary clipping
dextorslabs 0:9c462c65176a 299 if((x >= _width) || (y >= _height)) return;
dextorslabs 0:9c462c65176a 300 if((x+w-1) >= _height) w = _width-x;
dextorslabs 0:9c462c65176a 301 SetAddrWindow(x, y, x+w-1, y);
dextorslabs 0:9c462c65176a 302
dextorslabs 0:9c462c65176a 303 uint8_t hi = colour >> 8, lo = colour;
dextorslabs 0:9c462c65176a 304 dc = 1;
dextorslabs 0:9c462c65176a 305 cs = 0;
dextorslabs 0:9c462c65176a 306 while (w--) {
dextorslabs 0:9c462c65176a 307 spi.write(hi);
dextorslabs 0:9c462c65176a 308 spi.write(lo);
dextorslabs 0:9c462c65176a 309 }
dextorslabs 0:9c462c65176a 310 cs = 1;
dextorslabs 0:9c462c65176a 311 }
dextorslabs 0:9c462c65176a 312
dextorslabs 0:9c462c65176a 313
dextorslabs 0:9c462c65176a 314 // Draws a filled rectangle
dextorslabs 0:9c462c65176a 315 void ILI9340_Display::FillRect(int16_t x, int16_t y, int16_t w, int16_t h, uint16_t colour) {
dextorslabs 0:9c462c65176a 316
dextorslabs 0:9c462c65176a 317 // rudimentary clipping (drawChar w/big text requires this)
dextorslabs 0:9c462c65176a 318 if((x >= _width) || (y >= _height)) return;
dextorslabs 0:9c462c65176a 319 if((x + w - 1) >= _width) w = _width - x;
dextorslabs 0:9c462c65176a 320 if((y + h - 1) >= _height) h = _height - y;
dextorslabs 0:9c462c65176a 321
dextorslabs 0:9c462c65176a 322 SetAddrWindow(x, y, x+w-1, y+h-1);
dextorslabs 0:9c462c65176a 323
dextorslabs 0:9c462c65176a 324 uint8_t hi = colour >> 8, lo = colour;
dextorslabs 0:9c462c65176a 325
dextorslabs 0:9c462c65176a 326 dc = 1;
dextorslabs 0:9c462c65176a 327 cs = 0;
dextorslabs 0:9c462c65176a 328
dextorslabs 0:9c462c65176a 329 for(y=h; y>0; y--) {
dextorslabs 0:9c462c65176a 330 for(x=w; x>0; x--) {
dextorslabs 0:9c462c65176a 331 spi.write(hi);
dextorslabs 0:9c462c65176a 332 spi.write(lo);
dextorslabs 0:9c462c65176a 333 }
dextorslabs 0:9c462c65176a 334 }
dextorslabs 0:9c462c65176a 335 cs = 1;
dextorslabs 0:9c462c65176a 336 }
dextorslabs 0:9c462c65176a 337
dextorslabs 0:9c462c65176a 338
dextorslabs 0:9c462c65176a 339
dextorslabs 0:9c462c65176a 340 // Draw an unfilled rectangle
dextorslabs 0:9c462c65176a 341 void ILI9340_Display::DrawRect(int16_t x, int16_t y, int16_t w, int16_t h, uint16_t color){
dextorslabs 0:9c462c65176a 342 DrawFastHLine(x, y, w, color);
dextorslabs 0:9c462c65176a 343 DrawFastHLine(x, y+h-1, w, color);
dextorslabs 0:9c462c65176a 344 DrawFastVLine(x, y, h, color);
dextorslabs 0:9c462c65176a 345 DrawFastVLine(x+w-1, y, h, color);
dextorslabs 0:9c462c65176a 346 }
dextorslabs 0:9c462c65176a 347
dextorslabs 0:9c462c65176a 348
dextorslabs 0:9c462c65176a 349 // draw an unfilled circle
dextorslabs 0:9c462c65176a 350 void ILI9340_Display::DrawCircle(int16_t x0, int16_t y0, int16_t r, uint16_t colour){
dextorslabs 0:9c462c65176a 351 int16_t f = 1 - r;
dextorslabs 0:9c462c65176a 352 int16_t ddF_x = 1;
dextorslabs 0:9c462c65176a 353 int16_t ddF_y = -2 * r;
dextorslabs 0:9c462c65176a 354 int16_t x = 0;
dextorslabs 0:9c462c65176a 355 int16_t y = r;
dextorslabs 0:9c462c65176a 356
dextorslabs 0:9c462c65176a 357 DrawPixel(x0 , y0+r, colour);
dextorslabs 0:9c462c65176a 358 DrawPixel(x0 , y0-r, colour);
dextorslabs 0:9c462c65176a 359 DrawPixel(x0+r, y0 , colour);
dextorslabs 0:9c462c65176a 360 DrawPixel(x0-r, y0 , colour);
dextorslabs 0:9c462c65176a 361
dextorslabs 0:9c462c65176a 362 while (x<y) {
dextorslabs 0:9c462c65176a 363 if (f >= 0) {
dextorslabs 0:9c462c65176a 364 y--;
dextorslabs 0:9c462c65176a 365 ddF_y += 2;
dextorslabs 0:9c462c65176a 366 f += ddF_y;
dextorslabs 0:9c462c65176a 367 }
dextorslabs 0:9c462c65176a 368 x++;
dextorslabs 0:9c462c65176a 369 ddF_x += 2;
dextorslabs 0:9c462c65176a 370 f += ddF_x;
dextorslabs 0:9c462c65176a 371
dextorslabs 0:9c462c65176a 372 DrawPixel(x0 + x, y0 + y, colour);
dextorslabs 0:9c462c65176a 373 DrawPixel(x0 - x, y0 + y, colour);
dextorslabs 0:9c462c65176a 374 DrawPixel(x0 + x, y0 - y, colour);
dextorslabs 0:9c462c65176a 375 DrawPixel(x0 - x, y0 - y, colour);
dextorslabs 0:9c462c65176a 376 DrawPixel(x0 + y, y0 + x, colour);
dextorslabs 0:9c462c65176a 377 DrawPixel(x0 - y, y0 + x, colour);
dextorslabs 0:9c462c65176a 378 DrawPixel(x0 + y, y0 - x, colour);
dextorslabs 0:9c462c65176a 379 DrawPixel(x0 - y, y0 - x, colour);
dextorslabs 0:9c462c65176a 380 }
dextorslabs 0:9c462c65176a 381 }
dextorslabs 0:9c462c65176a 382
dextorslabs 0:9c462c65176a 383
dextorslabs 0:9c462c65176a 384 // Pass 8-bit (each) R,G,B, get back 16-bit packed color
dextorslabs 0:9c462c65176a 385 uint16_t ILI9340_Display::Colour565(uint8_t r, uint8_t g, uint8_t b) {
dextorslabs 0:9c462c65176a 386 return ((r & 0xF8) << 8) | ((g & 0xFC) << 3) | (b >> 3);
dextorslabs 0:9c462c65176a 387 }
dextorslabs 0:9c462c65176a 388
dextorslabs 0:9c462c65176a 389
dextorslabs 0:9c462c65176a 390 // Writes an ascii character to the display
dextorslabs 0:9c462c65176a 391 void ILI9340_Display::DrawAscii(unsigned char ascii, uint16_t x, uint16_t y, uint16_t size, uint16_t colour) {
dextorslabs 0:9c462c65176a 392 SetAddrWindow(x, y, x+size, y+size);
dextorslabs 0:9c462c65176a 393
dextorslabs 0:9c462c65176a 394 if( (ascii < 0x20) || (ascii > 0x7e) ) //check for valid ASCII char
dextorslabs 0:9c462c65176a 395 {
dextorslabs 0:9c462c65176a 396 ascii = '?'; //char not supported
dextorslabs 0:9c462c65176a 397 }
dextorslabs 0:9c462c65176a 398 for(unsigned char i=0; i<8; i++)
dextorslabs 0:9c462c65176a 399 {
dextorslabs 0:9c462c65176a 400 unsigned char temp = simpleFont[ascii - 0x20][i];
dextorslabs 0:9c462c65176a 401 for(unsigned char f=0; f<8; f++)
dextorslabs 0:9c462c65176a 402 {
dextorslabs 0:9c462c65176a 403 if( (temp>>f) & 0x01 )
dextorslabs 0:9c462c65176a 404 {
dextorslabs 0:9c462c65176a 405 switch(orientation)
dextorslabs 0:9c462c65176a 406 {
dextorslabs 0:9c462c65176a 407 case '0':
dextorslabs 0:9c462c65176a 408 FillRect(x+f*size, y-i*size, size, size, colour);
dextorslabs 0:9c462c65176a 409 break;
dextorslabs 0:9c462c65176a 410 case '1':
dextorslabs 0:9c462c65176a 411 FillRect(x-i*size, x-f*size, size, size, colour);
dextorslabs 0:9c462c65176a 412 break;
dextorslabs 0:9c462c65176a 413 case '2':
dextorslabs 0:9c462c65176a 414 FillRect(x-f*size, y+i*size, size, size, colour);
dextorslabs 0:9c462c65176a 415 break;
dextorslabs 0:9c462c65176a 416 case '3':
dextorslabs 0:9c462c65176a 417 default:
dextorslabs 0:9c462c65176a 418 FillRect(x+i*size, y+f*size, size, size, colour);
dextorslabs 0:9c462c65176a 419 }
dextorslabs 0:9c462c65176a 420 }
dextorslabs 0:9c462c65176a 421 }
dextorslabs 0:9c462c65176a 422 }
dextorslabs 0:9c462c65176a 423 }
dextorslabs 0:9c462c65176a 424
dextorslabs 0:9c462c65176a 425
dextorslabs 0:9c462c65176a 426 // Writes a character array to the display
dextorslabs 0:9c462c65176a 427 void ILI9340_Display::DrawString(char *string, uint16_t x, uint16_t y, uint8_t size, uint16_t colour)
dextorslabs 0:9c462c65176a 428 {
dextorslabs 0:9c462c65176a 429 while(*string)
dextorslabs 0:9c462c65176a 430 {
dextorslabs 0:9c462c65176a 431 DrawAscii(*string, x, y, size, colour);
dextorslabs 0:9c462c65176a 432 *string++;
dextorslabs 0:9c462c65176a 433 switch(orientation)
dextorslabs 0:9c462c65176a 434 {
dextorslabs 0:9c462c65176a 435 case '0':
dextorslabs 0:9c462c65176a 436 if(y > 0) y-=8*size; //Change position to next char
dextorslabs 0:9c462c65176a 437 break;
dextorslabs 0:9c462c65176a 438 case '1':
dextorslabs 0:9c462c65176a 439 if(x > 0) x-=8*size;
dextorslabs 0:9c462c65176a 440 break;
dextorslabs 0:9c462c65176a 441 case '2':
dextorslabs 0:9c462c65176a 442 if(y < _height) y+=8*size;
dextorslabs 0:9c462c65176a 443 break;
dextorslabs 0:9c462c65176a 444 case '3':
dextorslabs 0:9c462c65176a 445 default:
dextorslabs 0:9c462c65176a 446 if(x < _width) x+=8*size;
dextorslabs 0:9c462c65176a 447 }
dextorslabs 0:9c462c65176a 448 }
dextorslabs 0:9c462c65176a 449 }
dextorslabs 0:9c462c65176a 450
dextorslabs 0:9c462c65176a 451 // Converts integers into a character array
dextorslabs 0:9c462c65176a 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 0:9c462c65176a 453 int workvalue = value;
dextorslabs 0:9c462c65176a 454 int i;
dextorslabs 0:9c462c65176a 455 int valuetowrite;
dextorslabs 0:9c462c65176a 456 int end_i = 0;
dextorslabs 0:9c462c65176a 457
dextorslabs 0:9c462c65176a 458 if (value < 0)
dextorslabs 0:9c462c65176a 459 {
dextorslabs 0:9c462c65176a 460 workvalue = -value;
dextorslabs 0:9c462c65176a 461 end_i = 1;
dextorslabs 0:9c462c65176a 462 buffer[0] = '-';
dextorslabs 0:9c462c65176a 463 }
dextorslabs 0:9c462c65176a 464
dextorslabs 0:9c462c65176a 465 for (i = spaceonbuffer - 1; i >= end_i; i--)
dextorslabs 0:9c462c65176a 466 {
dextorslabs 0:9c462c65176a 467 valuetowrite = (workvalue % countbase);
dextorslabs 0:9c462c65176a 468 if (workvalue == 0)
dextorslabs 0:9c462c65176a 469 {
dextorslabs 0:9c462c65176a 470 if (i == (spaceonbuffer - 1))
dextorslabs 0:9c462c65176a 471 {
dextorslabs 0:9c462c65176a 472 buffer[i] = 48; // ASCII 0
dextorslabs 0:9c462c65176a 473 } else {
dextorslabs 0:9c462c65176a 474 buffer[i] = 32; // ASCII SPACE
dextorslabs 0:9c462c65176a 475 }
dextorslabs 0:9c462c65176a 476 } else {
dextorslabs 0:9c462c65176a 477 if (valuetowrite > 9)
dextorslabs 0:9c462c65176a 478 {
dextorslabs 0:9c462c65176a 479 buffer[i] = valuetowrite + 55; // ASCII A-Z
dextorslabs 0:9c462c65176a 480 } else {
dextorslabs 0:9c462c65176a 481 buffer[i] = valuetowrite + 48; // ASCII of that character
dextorslabs 0:9c462c65176a 482 }
dextorslabs 0:9c462c65176a 483 };
dextorslabs 0:9c462c65176a 484 workvalue = (workvalue - valuetowrite) / countbase;
dextorslabs 0:9c462c65176a 485 }
dextorslabs 0:9c462c65176a 486
dextorslabs 0:9c462c65176a 487 DrawString(buffer, x, y, size, colour);
dextorslabs 0:9c462c65176a 488 }
dextorslabs 0:9c462c65176a 489
dextorslabs 0:9c462c65176a 490
dextorslabs 0:9c462c65176a 491
dextorslabs 0:9c462c65176a 492 // Functional code to swap data contents of 16bit registers
dextorslabs 0:9c462c65176a 493 void ILI9340_Display::Swap(int16_t *a, int16_t *b) {
dextorslabs 0:9c462c65176a 494
dextorslabs 0:9c462c65176a 495 int16_t x = *a;
dextorslabs 0:9c462c65176a 496 *a = *b;
dextorslabs 0:9c462c65176a 497 *b = x;
dextorslabs 0:9c462c65176a 498 }
dextorslabs 0:9c462c65176a 499
dextorslabs 0:9c462c65176a 500
dextorslabs 0:9c462c65176a 501 // Draws a line with any length and orientation
dextorslabs 0:9c462c65176a 502 void ILI9340_Display::DrawLine(int16_t x0, int16_t y0, int16_t x1, int16_t y1, uint16_t colour){
dextorslabs 0:9c462c65176a 503 int16_t steep = abs(y1 - y0) > abs(x1 - x0);
dextorslabs 0:9c462c65176a 504 if (steep) {
dextorslabs 0:9c462c65176a 505 Swap(&x0, &y0);
dextorslabs 0:9c462c65176a 506 Swap(&x1, &y1);
dextorslabs 0:9c462c65176a 507 }
dextorslabs 0:9c462c65176a 508
dextorslabs 0:9c462c65176a 509 if (x0 > x1) {
dextorslabs 0:9c462c65176a 510 Swap(&x0, &x1);
dextorslabs 0:9c462c65176a 511 Swap(&y0, &y1);
dextorslabs 0:9c462c65176a 512 }
dextorslabs 0:9c462c65176a 513
dextorslabs 0:9c462c65176a 514 int16_t dx, dy;
dextorslabs 0:9c462c65176a 515 dx = x1 - x0;
dextorslabs 0:9c462c65176a 516 dy = abs(y1 - y0);
dextorslabs 0:9c462c65176a 517
dextorslabs 0:9c462c65176a 518 int16_t err = dx / 2;
dextorslabs 0:9c462c65176a 519 int16_t ystep;
dextorslabs 0:9c462c65176a 520
dextorslabs 0:9c462c65176a 521 if (y0 < y1) {
dextorslabs 0:9c462c65176a 522 ystep = 1;
dextorslabs 0:9c462c65176a 523 } else {
dextorslabs 0:9c462c65176a 524 ystep = -1;
dextorslabs 0:9c462c65176a 525 }
dextorslabs 0:9c462c65176a 526
dextorslabs 0:9c462c65176a 527 for (; x0<=x1; x0++) {
dextorslabs 0:9c462c65176a 528 if (steep) {
dextorslabs 0:9c462c65176a 529 DrawPixel(y0, x0, colour);
dextorslabs 0:9c462c65176a 530 } else {
dextorslabs 0:9c462c65176a 531 DrawPixel(x0, y0, colour);
dextorslabs 0:9c462c65176a 532 }
dextorslabs 0:9c462c65176a 533 err -= dy;
dextorslabs 0:9c462c65176a 534 if (err < 0) {
dextorslabs 0:9c462c65176a 535 y0 += ystep;
dextorslabs 0:9c462c65176a 536 err += dx;
dextorslabs 0:9c462c65176a 537 }
dextorslabs 0:9c462c65176a 538 }
dextorslabs 0:9c462c65176a 539 }
dextorslabs 0:9c462c65176a 540
dextorslabs 0:9c462c65176a 541
dextorslabs 0:9c462c65176a 542
dextorslabs 0:9c462c65176a 543
dextorslabs 0:9c462c65176a 544
dextorslabs 0:9c462c65176a 545
dextorslabs 0:9c462c65176a 546
dextorslabs 0:9c462c65176a 547