Chen Huan / Mbed 2 deprecated Final_DongGanPingTai

Tsinghua Icenter ChenHuan

Dependencies:   mbed

TFT/TFT_ILI9340.cpp@0:9b8df4f9b792, 2017-03-16 (annotated)

Committer:
heroistired
Date:
Thu Mar 16 13:07:14 2017 +0000
Revision:
0:9b8df4f9b792
DongGanPingTai

Who changed what in which revision?

UserRevisionLine numberNew contents of line
heroistired 0:9b8df4f9b792 1 /***************************************************************
heroistired 0:9b8df4f9b792 2 功能 : mbed的ILI9340液晶显示芯片的驱动程序与图形库,使用硬件SPI
heroistired 0:9b8df4f9b792 3 作者 : 陈欢 清华大学电机工程与应用电子技术系
heroistired 0:9b8df4f9b792 4 邮箱 : h-che14@mails.tsinghua.edu.cn OR heroistired@gmail.com
heroistired 0:9b8df4f9b792 5 声明 :
heroistired 0:9b8df4f9b792 6 本程序移植自 https://developer.mbed.org/users/dextorslabs/code/ILI9340_Driver/
heroistired 0:9b8df4f9b792 7 在原有基础上做了改进与丰富,本程序仅供学习与交流使用,如需他用,须联系作者
heroistired 0:9b8df4f9b792 8 All rights reserved
heroistired 0:9b8df4f9b792 9 2017.1.30
heroistired 0:9b8df4f9b792 10 ***************************************************************/
heroistired 0:9b8df4f9b792 11
heroistired 0:9b8df4f9b792 12
heroistired 0:9b8df4f9b792 13 #include "mbed.h"
heroistired 0:9b8df4f9b792 14 #include "TFT_ILI9340.h"
heroistired 0:9b8df4f9b792 15 #include "SimpleFont.cpp"
heroistired 0:9b8df4f9b792 16
heroistired 0:9b8df4f9b792 17
heroistired 0:9b8df4f9b792 18
heroistired 0:9b8df4f9b792 19 ////////////////////////////////////////////////////////////////////////////////////////////////
heroistired 0:9b8df4f9b792 20 // Constructor, assigns the pins to the SPI object, set orientation, and sets screen dims.
heroistired 0:9b8df4f9b792 21 ////////////////////////////////////////////////////////////////////////////////////////////////
heroistired 0:9b8df4f9b792 22 ILI9340_Display::ILI9340_Display(PinName mosi, PinName miso, PinName sclk, PinName cs, PinName rst, PinName dc)
heroistired 0:9b8df4f9b792 23 : spi(mosi, miso, sclk), cs(cs), rst(rst), dc(dc) {
heroistired 0:9b8df4f9b792 24 _height = _TFTHEIGHT;
heroistired 0:9b8df4f9b792 25 _width = _TFTWIDTH;
heroistired 0:9b8df4f9b792 26 orientation = 0;
heroistired 0:9b8df4f9b792 27 }
heroistired 0:9b8df4f9b792 28
heroistired 0:9b8df4f9b792 29
heroistired 0:9b8df4f9b792 30
heroistired 0:9b8df4f9b792 31 ////////////////////////////////////////////////////////////////////////////////////////////////
heroistired 0:9b8df4f9b792 32 // Command writing code
heroistired 0:9b8df4f9b792 33 ////////////////////////////////////////////////////////////////////////////////////////////////
heroistired 0:9b8df4f9b792 34 void ILI9340_Display::WriteCommand(uint8_t command) {
heroistired 0:9b8df4f9b792 35 dc = 0;
heroistired 0:9b8df4f9b792 36 cs = 0;
heroistired 0:9b8df4f9b792 37 spi.write(command);
heroistired 0:9b8df4f9b792 38 cs = 1;
heroistired 0:9b8df4f9b792 39 }
heroistired 0:9b8df4f9b792 40
heroistired 0:9b8df4f9b792 41
heroistired 0:9b8df4f9b792 42
heroistired 0:9b8df4f9b792 43 ////////////////////////////////////////////////////////////////////////////////////////////////
heroistired 0:9b8df4f9b792 44 // Data writing code
heroistired 0:9b8df4f9b792 45 ////////////////////////////////////////////////////////////////////////////////////////////////
heroistired 0:9b8df4f9b792 46 void ILI9340_Display::WriteData(uint8_t data) {
heroistired 0:9b8df4f9b792 47 cs = 0;
heroistired 0:9b8df4f9b792 48 dc = 1;
heroistired 0:9b8df4f9b792 49 spi.write(data);
heroistired 0:9b8df4f9b792 50 cs = 1;
heroistired 0:9b8df4f9b792 51 }
heroistired 0:9b8df4f9b792 52
heroistired 0:9b8df4f9b792 53
heroistired 0:9b8df4f9b792 54
heroistired 0:9b8df4f9b792 55 ////////////////////////////////////////////////////////////////////////////////////////////////
heroistired 0:9b8df4f9b792 56 // Initilise the display
heroistired 0:9b8df4f9b792 57 ////////////////////////////////////////////////////////////////////////////////////////////////
heroistired 0:9b8df4f9b792 58 void ILI9340_Display::DispInit(void) {
heroistired 0:9b8df4f9b792 59 //CtrlOutput();
heroistired 0:9b8df4f9b792 60
heroistired 0:9b8df4f9b792 61 rst = 0;
heroistired 0:9b8df4f9b792 62
heroistired 0:9b8df4f9b792 63 // Setup the spi for 8 bit data, high steady state clock,
heroistired 0:9b8df4f9b792 64 // second edge capture, with a 1MHz clock rate
heroistired 0:9b8df4f9b792 65 //spi.format(8,3);
heroistired 0:9b8df4f9b792 66 spi.frequency(24000000); // actually seems to work up to about 20Mhz... way better than the 8mhz as std.
heroistired 0:9b8df4f9b792 67
heroistired 0:9b8df4f9b792 68 // Toggle rst to reset
heroistired 0:9b8df4f9b792 69 rst = 1;
heroistired 0:9b8df4f9b792 70 wait(0.005);
heroistired 0:9b8df4f9b792 71 rst = 0;
heroistired 0:9b8df4f9b792 72 wait(0.020);
heroistired 0:9b8df4f9b792 73 rst = 1;
heroistired 0:9b8df4f9b792 74 wait(0.150);
heroistired 0:9b8df4f9b792 75
heroistired 0:9b8df4f9b792 76 WriteCommand(0xEF);
heroistired 0:9b8df4f9b792 77 WriteData(0x03);
heroistired 0:9b8df4f9b792 78 WriteData(0x80);
heroistired 0:9b8df4f9b792 79 WriteData(0x02);
heroistired 0:9b8df4f9b792 80
heroistired 0:9b8df4f9b792 81 WriteCommand(0xCF);
heroistired 0:9b8df4f9b792 82 WriteData(0x00);
heroistired 0:9b8df4f9b792 83 WriteData(0xC1);
heroistired 0:9b8df4f9b792 84 WriteData(0x30);
heroistired 0:9b8df4f9b792 85
heroistired 0:9b8df4f9b792 86 WriteCommand(0xED);
heroistired 0:9b8df4f9b792 87 WriteData(0x64);
heroistired 0:9b8df4f9b792 88 WriteData(0x03);
heroistired 0:9b8df4f9b792 89 WriteData(0x12);
heroistired 0:9b8df4f9b792 90 WriteData(0x81);
heroistired 0:9b8df4f9b792 91
heroistired 0:9b8df4f9b792 92 WriteCommand(0xE8);
heroistired 0:9b8df4f9b792 93 WriteData(0x85);
heroistired 0:9b8df4f9b792 94 WriteData(0x00);
heroistired 0:9b8df4f9b792 95 WriteData(0x78);
heroistired 0:9b8df4f9b792 96
heroistired 0:9b8df4f9b792 97 WriteCommand(0xCB);
heroistired 0:9b8df4f9b792 98 WriteData(0x39);
heroistired 0:9b8df4f9b792 99 WriteData(0x2C);
heroistired 0:9b8df4f9b792 100 WriteData(0x00);
heroistired 0:9b8df4f9b792 101 WriteData(0x34);
heroistired 0:9b8df4f9b792 102 WriteData(0x02);
heroistired 0:9b8df4f9b792 103
heroistired 0:9b8df4f9b792 104 WriteCommand(0xF7);
heroistired 0:9b8df4f9b792 105 WriteData(0x20);
heroistired 0:9b8df4f9b792 106
heroistired 0:9b8df4f9b792 107 WriteCommand(0xEA);
heroistired 0:9b8df4f9b792 108 WriteData(0x00);
heroistired 0:9b8df4f9b792 109 WriteData(0x00);
heroistired 0:9b8df4f9b792 110
heroistired 0:9b8df4f9b792 111 WriteCommand(ILI9340_PWCTR1); //Power control
heroistired 0:9b8df4f9b792 112 WriteData(0x23); //VRH[5:0]
heroistired 0:9b8df4f9b792 113
heroistired 0:9b8df4f9b792 114 WriteCommand(ILI9340_PWCTR2); //Power control
heroistired 0:9b8df4f9b792 115 WriteData(0x10); //SAP[2:0];BT[3:0]
heroistired 0:9b8df4f9b792 116
heroistired 0:9b8df4f9b792 117 WriteCommand(ILI9340_VMCTR1); //VCM control
heroistired 0:9b8df4f9b792 118 WriteData(0x3e); //
heroistired 0:9b8df4f9b792 119 WriteData(0x28);
heroistired 0:9b8df4f9b792 120
heroistired 0:9b8df4f9b792 121 WriteCommand(ILI9340_VMCTR2); //VCM control2
heroistired 0:9b8df4f9b792 122 WriteData(0x86); //--
heroistired 0:9b8df4f9b792 123
heroistired 0:9b8df4f9b792 124 WriteCommand(ILI9340_MADCTL); // Memory Access Control
heroistired 0:9b8df4f9b792 125 WriteData(ILI9340_MADCTL_MX | ILI9340_MADCTL_BGR);
heroistired 0:9b8df4f9b792 126
heroistired 0:9b8df4f9b792 127 WriteCommand(ILI9340_PIXFMT);
heroistired 0:9b8df4f9b792 128 WriteData(0x55);
heroistired 0:9b8df4f9b792 129
heroistired 0:9b8df4f9b792 130 WriteCommand(ILI9340_FRMCTR1);
heroistired 0:9b8df4f9b792 131 WriteData(0x00);
heroistired 0:9b8df4f9b792 132 WriteData(0x18);
heroistired 0:9b8df4f9b792 133
heroistired 0:9b8df4f9b792 134 WriteCommand(ILI9340_DFUNCTR); // Display Function Control
heroistired 0:9b8df4f9b792 135 WriteData(0x08);
heroistired 0:9b8df4f9b792 136 WriteData(0x82);
heroistired 0:9b8df4f9b792 137 WriteData(0x27);
heroistired 0:9b8df4f9b792 138
heroistired 0:9b8df4f9b792 139 WriteCommand(0xF2); // 3Gamma Function Disable
heroistired 0:9b8df4f9b792 140 WriteData(0x00);
heroistired 0:9b8df4f9b792 141
heroistired 0:9b8df4f9b792 142 WriteCommand(ILI9340_GAMMASET); //Gamma curve selected
heroistired 0:9b8df4f9b792 143 WriteData(0x01);
heroistired 0:9b8df4f9b792 144
heroistired 0:9b8df4f9b792 145 WriteCommand(ILI9340_GMCTRP1); //Set Gamma
heroistired 0:9b8df4f9b792 146 WriteData(0x0F);
heroistired 0:9b8df4f9b792 147 WriteData(0x31);
heroistired 0:9b8df4f9b792 148 WriteData(0x2B);
heroistired 0:9b8df4f9b792 149 WriteData(0x0C);
heroistired 0:9b8df4f9b792 150 WriteData(0x0E);
heroistired 0:9b8df4f9b792 151 WriteData(0x08);
heroistired 0:9b8df4f9b792 152 WriteData(0x4E);
heroistired 0:9b8df4f9b792 153 WriteData(0xF1);
heroistired 0:9b8df4f9b792 154 WriteData(0x37);
heroistired 0:9b8df4f9b792 155 WriteData(0x07);
heroistired 0:9b8df4f9b792 156 WriteData(0x10);
heroistired 0:9b8df4f9b792 157 WriteData(0x03);
heroistired 0:9b8df4f9b792 158 WriteData(0x0E);
heroistired 0:9b8df4f9b792 159 WriteData(0x09);
heroistired 0:9b8df4f9b792 160 WriteData(0x00);
heroistired 0:9b8df4f9b792 161
heroistired 0:9b8df4f9b792 162 WriteCommand(ILI9340_GMCTRN1); //Set Gamma
heroistired 0:9b8df4f9b792 163 WriteData(0x00);
heroistired 0:9b8df4f9b792 164 WriteData(0x0E);
heroistired 0:9b8df4f9b792 165 WriteData(0x14);
heroistired 0:9b8df4f9b792 166 WriteData(0x03);
heroistired 0:9b8df4f9b792 167 WriteData(0x11);
heroistired 0:9b8df4f9b792 168 WriteData(0x07);
heroistired 0:9b8df4f9b792 169 WriteData(0x31);
heroistired 0:9b8df4f9b792 170 WriteData(0xC1);
heroistired 0:9b8df4f9b792 171 WriteData(0x48);
heroistired 0:9b8df4f9b792 172 WriteData(0x08);
heroistired 0:9b8df4f9b792 173 WriteData(0x0F);
heroistired 0:9b8df4f9b792 174 WriteData(0x0C);
heroistired 0:9b8df4f9b792 175 WriteData(0x31);
heroistired 0:9b8df4f9b792 176 WriteData(0x36);
heroistired 0:9b8df4f9b792 177 WriteData(0x0F);
heroistired 0:9b8df4f9b792 178
heroistired 0:9b8df4f9b792 179 WriteCommand(ILI9340_SLPOUT); //Exit Sleep
heroistired 0:9b8df4f9b792 180 wait(0.120);
heroistired 0:9b8df4f9b792 181 WriteCommand(ILI9340_DISPON); //Display on
heroistired 0:9b8df4f9b792 182
heroistired 0:9b8df4f9b792 183 }
heroistired 0:9b8df4f9b792 184
heroistired 0:9b8df4f9b792 185
heroistired 0:9b8df4f9b792 186
heroistired 0:9b8df4f9b792 187 ////////////////////////////////////////////////////////////////////////////////////////////////
heroistired 0:9b8df4f9b792 188 // Sets the rotation of the display
heroistired 0:9b8df4f9b792 189 ////////////////////////////////////////////////////////////////////////////////////////////////
heroistired 0:9b8df4f9b792 190
heroistired 0:9b8df4f9b792 191 //////////////////////////////////////////////////////////////////////////////////
heroistired 0:9b8df4f9b792 192 //功能 : 设置屏幕的方向
heroistired 0:9b8df4f9b792 193 //参数 : m 方向 以接线的方向为向下 0 向上 1 向右 2 向下 3 向左
heroistired 0:9b8df4f9b792 194 //返回值 : 无
heroistired 0:9b8df4f9b792 195 //////////////////////////////////////////////////////////////////////////////////
heroistired 0:9b8df4f9b792 196 void ILI9340_Display::SetRotation(uint8_t m) {
heroistired 0:9b8df4f9b792 197
heroistired 0:9b8df4f9b792 198 WriteCommand(ILI9340_MADCTL);
heroistired 0:9b8df4f9b792 199 orientation = m % 4; // can't be higher than 3
heroistired 0:9b8df4f9b792 200
heroistired 0:9b8df4f9b792 201 switch (orientation) {
heroistired 0:9b8df4f9b792 202 case 0:
heroistired 0:9b8df4f9b792 203 WriteData(ILI9340_MADCTL_MX | ILI9340_MADCTL_BGR);
heroistired 0:9b8df4f9b792 204 _width = _TFTWIDTH;
heroistired 0:9b8df4f9b792 205 _height = _TFTHEIGHT;
heroistired 0:9b8df4f9b792 206 break;
heroistired 0:9b8df4f9b792 207 case 1:
heroistired 0:9b8df4f9b792 208 WriteData(ILI9340_MADCTL_MV | ILI9340_MADCTL_BGR);
heroistired 0:9b8df4f9b792 209 _width = _TFTHEIGHT;
heroistired 0:9b8df4f9b792 210 _height = _TFTWIDTH;
heroistired 0:9b8df4f9b792 211 break;
heroistired 0:9b8df4f9b792 212 case 2:
heroistired 0:9b8df4f9b792 213 WriteData(ILI9340_MADCTL_MY | ILI9340_MADCTL_BGR);
heroistired 0:9b8df4f9b792 214 _width = _TFTWIDTH;
heroistired 0:9b8df4f9b792 215 _height = _TFTHEIGHT;
heroistired 0:9b8df4f9b792 216 break;
heroistired 0:9b8df4f9b792 217 case 3:
heroistired 0:9b8df4f9b792 218 WriteData(ILI9340_MADCTL_MV | ILI9340_MADCTL_MY | ILI9340_MADCTL_MX | ILI9340_MADCTL_BGR);
heroistired 0:9b8df4f9b792 219 _width = _TFTHEIGHT;
heroistired 0:9b8df4f9b792 220 _height = _TFTWIDTH;
heroistired 0:9b8df4f9b792 221 break;
heroistired 0:9b8df4f9b792 222 }
heroistired 0:9b8df4f9b792 223 }
heroistired 0:9b8df4f9b792 224
heroistired 0:9b8df4f9b792 225
heroistired 0:9b8df4f9b792 226
heroistired 0:9b8df4f9b792 227
heroistired 0:9b8df4f9b792 228 ////////////////////////////////////////////////////////////////////////////////////////////////
heroistired 0:9b8df4f9b792 229 // Invert the colours of the display in hardware
heroistired 0:9b8df4f9b792 230 ////////////////////////////////////////////////////////////////////////////////////////////////
heroistired 0:9b8df4f9b792 231 void ILI9340_Display::InvertDisplay(bool i) {
heroistired 0:9b8df4f9b792 232 WriteCommand(i ? ILI9340_INVON : ILI9340_INVOFF);
heroistired 0:9b8df4f9b792 233 }
heroistired 0:9b8df4f9b792 234
heroistired 0:9b8df4f9b792 235
heroistired 0:9b8df4f9b792 236
heroistired 0:9b8df4f9b792 237
heroistired 0:9b8df4f9b792 238 ////////////////////////////////////////////////////////////////////////////////////////////////
heroistired 0:9b8df4f9b792 239 // Set address window for writing data to.
heroistired 0:9b8df4f9b792 240 ////////////////////////////////////////////////////////////////////////////////////////////////
heroistired 0:9b8df4f9b792 241 void ILI9340_Display::SetAddrWindow(uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1) {
heroistired 0:9b8df4f9b792 242
heroistired 0:9b8df4f9b792 243 WriteCommand(ILI9340_CASET); // Column addr set
heroistired 0:9b8df4f9b792 244 WriteData(x0 >> 8);
heroistired 0:9b8df4f9b792 245 WriteData(x0 & 0xFF); // XSTART
heroistired 0:9b8df4f9b792 246 WriteData(x1 >> 8);
heroistired 0:9b8df4f9b792 247 WriteData(x1 & 0xFF); // XEND
heroistired 0:9b8df4f9b792 248
heroistired 0:9b8df4f9b792 249 WriteCommand(ILI9340_PASET); // Row addr set
heroistired 0:9b8df4f9b792 250 WriteData(y0>>8);
heroistired 0:9b8df4f9b792 251 WriteData(y0); // YSTART
heroistired 0:9b8df4f9b792 252 WriteData(y1>>8);
heroistired 0:9b8df4f9b792 253 WriteData(y1); // YEND
heroistired 0:9b8df4f9b792 254
heroistired 0:9b8df4f9b792 255 WriteCommand(ILI9340_RAMWR); // write to RAM
heroistired 0:9b8df4f9b792 256 }
heroistired 0:9b8df4f9b792 257
heroistired 0:9b8df4f9b792 258
heroistired 0:9b8df4f9b792 259
heroistired 0:9b8df4f9b792 260
heroistired 0:9b8df4f9b792 261 ////////////////////////////////////////////////////////////////////////////////////////////////
heroistired 0:9b8df4f9b792 262 // To draw the humble pixel
heroistired 0:9b8df4f9b792 263 ////////////////////////////////////////////////////////////////////////////////////////////////
heroistired 0:9b8df4f9b792 264 void ILI9340_Display::DrawPixel(uint16_t x, uint16_t y, uint16_t colour) {
heroistired 0:9b8df4f9b792 265 if((x < 1) ||(x >= _width) || (y < 1) || (y >= _height)) return;
heroistired 0:9b8df4f9b792 266
heroistired 0:9b8df4f9b792 267 SetAddrWindow(x,y,x+1,y+1);
heroistired 0:9b8df4f9b792 268
heroistired 0:9b8df4f9b792 269 dc = 1;
heroistired 0:9b8df4f9b792 270 cs = 0;
heroistired 0:9b8df4f9b792 271
heroistired 0:9b8df4f9b792 272 spi.write(colour >> 8);
heroistired 0:9b8df4f9b792 273 spi.write(colour);
heroistired 0:9b8df4f9b792 274
heroistired 0:9b8df4f9b792 275 cs = 1;
heroistired 0:9b8df4f9b792 276 }
heroistired 0:9b8df4f9b792 277
heroistired 0:9b8df4f9b792 278
heroistired 0:9b8df4f9b792 279
heroistired 0:9b8df4f9b792 280 ////////////////////////////////////////////////////////////////////////////////////////////////
heroistired 0:9b8df4f9b792 281 // Fill the screen with a colour
heroistired 0:9b8df4f9b792 282 ////////////////////////////////////////////////////////////////////////////////////////////////
heroistired 0:9b8df4f9b792 283 void ILI9340_Display::FillScreen(uint16_t colour) {
heroistired 0:9b8df4f9b792 284 SetAddrWindow(0,0,_width,_height);
heroistired 0:9b8df4f9b792 285
heroistired 0:9b8df4f9b792 286 dc = 1;
heroistired 0:9b8df4f9b792 287 cs = 0;
heroistired 0:9b8df4f9b792 288
heroistired 0:9b8df4f9b792 289 unsigned int total = _width * _height;
heroistired 0:9b8df4f9b792 290 unsigned int position = 0;
heroistired 0:9b8df4f9b792 291
heroistired 0:9b8df4f9b792 292 while (position < total) {
heroistired 0:9b8df4f9b792 293 spi.write(colour >> 8);
heroistired 0:9b8df4f9b792 294 spi.write(colour);
heroistired 0:9b8df4f9b792 295 position++;
heroistired 0:9b8df4f9b792 296 }
heroistired 0:9b8df4f9b792 297 cs = 1;
heroistired 0:9b8df4f9b792 298 }
heroistired 0:9b8df4f9b792 299
heroistired 0:9b8df4f9b792 300
heroistired 0:9b8df4f9b792 301
heroistired 0:9b8df4f9b792 302 ////////////////////////////////////////////////////////////////////////////////////////////////
heroistired 0:9b8df4f9b792 303 // Draws a vertical line fast
heroistired 0:9b8df4f9b792 304 ////////////////////////////////////////////////////////////////////////////////////////////////
heroistired 0:9b8df4f9b792 305 void ILI9340_Display::DrawFastVLine(int16_t x, int16_t y, int16_t h, uint16_t colour) {
heroistired 0:9b8df4f9b792 306
heroistired 0:9b8df4f9b792 307 // Rudimentary clipping
heroistired 0:9b8df4f9b792 308 if((x >= _width) || (y >= _height)) return;
heroistired 0:9b8df4f9b792 309
heroistired 0:9b8df4f9b792 310 if((y+h-1) >= _height)
heroistired 0:9b8df4f9b792 311 h = _height-y;
heroistired 0:9b8df4f9b792 312
heroistired 0:9b8df4f9b792 313 SetAddrWindow(x, y, x, y+h-1);
heroistired 0:9b8df4f9b792 314
heroistired 0:9b8df4f9b792 315 uint8_t hi = colour >> 8, lo = colour;
heroistired 0:9b8df4f9b792 316
heroistired 0:9b8df4f9b792 317 dc = 1;
heroistired 0:9b8df4f9b792 318 cs = 0;
heroistired 0:9b8df4f9b792 319
heroistired 0:9b8df4f9b792 320 while (h--) {
heroistired 0:9b8df4f9b792 321 spi.write(hi);
heroistired 0:9b8df4f9b792 322 spi.write(lo);
heroistired 0:9b8df4f9b792 323 }
heroistired 0:9b8df4f9b792 324 cs = 1;
heroistired 0:9b8df4f9b792 325 }
heroistired 0:9b8df4f9b792 326
heroistired 0:9b8df4f9b792 327
heroistired 0:9b8df4f9b792 328
heroistired 0:9b8df4f9b792 329 ////////////////////////////////////////////////////////////////////////////////////////////////
heroistired 0:9b8df4f9b792 330 // Draws a horizontal line fast
heroistired 0:9b8df4f9b792 331 ////////////////////////////////////////////////////////////////////////////////////////////////
heroistired 0:9b8df4f9b792 332 void ILI9340_Display::DrawFastHLine(int16_t x, int16_t y, int16_t w, uint16_t colour) {
heroistired 0:9b8df4f9b792 333
heroistired 0:9b8df4f9b792 334 // Rudimentary clipping
heroistired 0:9b8df4f9b792 335 if((x >= _width) || (y >= _height)) return;
heroistired 0:9b8df4f9b792 336 if((x+w-1) >= _height) w = _width-x;
heroistired 0:9b8df4f9b792 337 SetAddrWindow(x, y, x+w-1, y);
heroistired 0:9b8df4f9b792 338
heroistired 0:9b8df4f9b792 339 uint8_t hi = colour >> 8, lo = colour;
heroistired 0:9b8df4f9b792 340 dc = 1;
heroistired 0:9b8df4f9b792 341 cs = 0;
heroistired 0:9b8df4f9b792 342 while (w--) {
heroistired 0:9b8df4f9b792 343 spi.write(hi);
heroistired 0:9b8df4f9b792 344 spi.write(lo);
heroistired 0:9b8df4f9b792 345 }
heroistired 0:9b8df4f9b792 346 cs = 1;
heroistired 0:9b8df4f9b792 347 }
heroistired 0:9b8df4f9b792 348
heroistired 0:9b8df4f9b792 349
heroistired 0:9b8df4f9b792 350
heroistired 0:9b8df4f9b792 351
heroistired 0:9b8df4f9b792 352 ////////////////////////////////////////////////////////////////////////////////////////////////
heroistired 0:9b8df4f9b792 353 // Draws a filled rectangle
heroistired 0:9b8df4f9b792 354 ////////////////////////////////////////////////////////////////////////////////////////////////
heroistired 0:9b8df4f9b792 355 void ILI9340_Display::FillRect(int16_t x, int16_t y, int16_t w, int16_t h, uint16_t colour) {
heroistired 0:9b8df4f9b792 356
heroistired 0:9b8df4f9b792 357 // rudimentary clipping (drawChar w/big text requires this)
heroistired 0:9b8df4f9b792 358 if((x >= _width) || (y >= _height)) return;
heroistired 0:9b8df4f9b792 359 if((x + w - 1) >= _width) w = _width - x;
heroistired 0:9b8df4f9b792 360 if((y + h - 1) >= _height) h = _height - y;
heroistired 0:9b8df4f9b792 361
heroistired 0:9b8df4f9b792 362 SetAddrWindow(x, y, x+w-1, y+h-1);
heroistired 0:9b8df4f9b792 363
heroistired 0:9b8df4f9b792 364 uint8_t hi = colour >> 8, lo = colour;
heroistired 0:9b8df4f9b792 365
heroistired 0:9b8df4f9b792 366 dc = 1;
heroistired 0:9b8df4f9b792 367 cs = 0;
heroistired 0:9b8df4f9b792 368
heroistired 0:9b8df4f9b792 369 for(y=h; y>0; y--) {
heroistired 0:9b8df4f9b792 370 for(x=w; x>0; x--) {
heroistired 0:9b8df4f9b792 371 spi.write(hi);
heroistired 0:9b8df4f9b792 372 spi.write(lo);
heroistired 0:9b8df4f9b792 373 }
heroistired 0:9b8df4f9b792 374 }
heroistired 0:9b8df4f9b792 375 cs = 1;
heroistired 0:9b8df4f9b792 376 }
heroistired 0:9b8df4f9b792 377
heroistired 0:9b8df4f9b792 378
heroistired 0:9b8df4f9b792 379
heroistired 0:9b8df4f9b792 380
heroistired 0:9b8df4f9b792 381 ////////////////////////////////////////////////////////////////////////////////////////////////
heroistired 0:9b8df4f9b792 382 // Draw an unfilled rectangle
heroistired 0:9b8df4f9b792 383 ////////////////////////////////////////////////////////////////////////////////////////////////
heroistired 0:9b8df4f9b792 384 void ILI9340_Display::DrawRect(int16_t x, int16_t y, int16_t w, int16_t h, uint16_t color){
heroistired 0:9b8df4f9b792 385 DrawFastHLine(x, y, w, color);
heroistired 0:9b8df4f9b792 386 DrawFastHLine(x, y+h-1, w, color);
heroistired 0:9b8df4f9b792 387 DrawFastVLine(x, y, h, color);
heroistired 0:9b8df4f9b792 388 DrawFastVLine(x+w-1, y, h, color);
heroistired 0:9b8df4f9b792 389 }
heroistired 0:9b8df4f9b792 390
heroistired 0:9b8df4f9b792 391
heroistired 0:9b8df4f9b792 392
heroistired 0:9b8df4f9b792 393
heroistired 0:9b8df4f9b792 394
heroistired 0:9b8df4f9b792 395 ////////////////////////////////////////////////////////////////////////////////////////////////
heroistired 0:9b8df4f9b792 396 // draw an unfilled circle
heroistired 0:9b8df4f9b792 397 ////////////////////////////////////////////////////////////////////////////////////////////////
heroistired 0:9b8df4f9b792 398 void ILI9340_Display::DrawCircle(int16_t x0, int16_t y0, int16_t r, uint16_t colour){
heroistired 0:9b8df4f9b792 399 int16_t f = 1 - r;
heroistired 0:9b8df4f9b792 400 int16_t ddF_x = 1;
heroistired 0:9b8df4f9b792 401 int16_t ddF_y = -2 * r;
heroistired 0:9b8df4f9b792 402 int16_t x = 0;
heroistired 0:9b8df4f9b792 403 int16_t y = r;
heroistired 0:9b8df4f9b792 404
heroistired 0:9b8df4f9b792 405 DrawPixel(x0 , y0+r, colour);
heroistired 0:9b8df4f9b792 406 DrawPixel(x0 , y0-r, colour);
heroistired 0:9b8df4f9b792 407 DrawPixel(x0+r, y0 , colour);
heroistired 0:9b8df4f9b792 408 DrawPixel(x0-r, y0 , colour);
heroistired 0:9b8df4f9b792 409
heroistired 0:9b8df4f9b792 410 while (x<y) {
heroistired 0:9b8df4f9b792 411 if (f >= 0) {
heroistired 0:9b8df4f9b792 412 y--;
heroistired 0:9b8df4f9b792 413 ddF_y += 2;
heroistired 0:9b8df4f9b792 414 f += ddF_y;
heroistired 0:9b8df4f9b792 415 }
heroistired 0:9b8df4f9b792 416 x++;
heroistired 0:9b8df4f9b792 417 ddF_x += 2;
heroistired 0:9b8df4f9b792 418 f += ddF_x;
heroistired 0:9b8df4f9b792 419
heroistired 0:9b8df4f9b792 420 DrawPixel(x0 + x, y0 + y, colour);
heroistired 0:9b8df4f9b792 421 DrawPixel(x0 - x, y0 + y, colour);
heroistired 0:9b8df4f9b792 422 DrawPixel(x0 + x, y0 - y, colour);
heroistired 0:9b8df4f9b792 423 DrawPixel(x0 - x, y0 - y, colour);
heroistired 0:9b8df4f9b792 424 DrawPixel(x0 + y, y0 + x, colour);
heroistired 0:9b8df4f9b792 425 DrawPixel(x0 - y, y0 + x, colour);
heroistired 0:9b8df4f9b792 426 DrawPixel(x0 + y, y0 - x, colour);
heroistired 0:9b8df4f9b792 427 DrawPixel(x0 - y, y0 - x, colour);
heroistired 0:9b8df4f9b792 428 }
heroistired 0:9b8df4f9b792 429 }
heroistired 0:9b8df4f9b792 430
heroistired 0:9b8df4f9b792 431
heroistired 0:9b8df4f9b792 432
heroistired 0:9b8df4f9b792 433
heroistired 0:9b8df4f9b792 434
heroistired 0:9b8df4f9b792 435 ////////////////////////////////////////////////////////////////////////////////////////////////
heroistired 0:9b8df4f9b792 436 // Draw a filled circle
heroistired 0:9b8df4f9b792 437 ////////////////////////////////////////////////////////////////////////////////////////////////
heroistired 0:9b8df4f9b792 438 void ILI9340_Display::FillCircle(int16_t x0, int16_t y0, int16_t r, uint16_t colour) {
heroistired 0:9b8df4f9b792 439 DrawFastVLine(x0, y0-r, 2*r+1, colour);
heroistired 0:9b8df4f9b792 440 FillCircleHelper(x0, y0, r, 3, 0, colour);
heroistired 0:9b8df4f9b792 441 }
heroistired 0:9b8df4f9b792 442
heroistired 0:9b8df4f9b792 443
heroistired 0:9b8df4f9b792 444
heroistired 0:9b8df4f9b792 445
heroistired 0:9b8df4f9b792 446
heroistired 0:9b8df4f9b792 447 ////////////////////////////////////////////////////////////////////////////////////////////////
heroistired 0:9b8df4f9b792 448 // used to draw circles and roundrects!
heroistired 0:9b8df4f9b792 449 ////////////////////////////////////////////////////////////////////////////////////////////////
heroistired 0:9b8df4f9b792 450 void ILI9340_Display::FillCircleHelper(int16_t x0, int16_t y0, int16_t r, uint8_t cornername, int16_t delta, uint16_t colour) {
heroistired 0:9b8df4f9b792 451
heroistired 0:9b8df4f9b792 452 int16_t f = 1 - r;
heroistired 0:9b8df4f9b792 453 int16_t ddF_x = 1;
heroistired 0:9b8df4f9b792 454 int16_t ddF_y = -2 * r;
heroistired 0:9b8df4f9b792 455 int16_t x = 0;
heroistired 0:9b8df4f9b792 456 int16_t y = r;
heroistired 0:9b8df4f9b792 457
heroistired 0:9b8df4f9b792 458 while (x<y) {
heroistired 0:9b8df4f9b792 459 if (f >= 0) {
heroistired 0:9b8df4f9b792 460 y--;
heroistired 0:9b8df4f9b792 461 ddF_y += 2;
heroistired 0:9b8df4f9b792 462 f += ddF_y;
heroistired 0:9b8df4f9b792 463 }
heroistired 0:9b8df4f9b792 464 x++;
heroistired 0:9b8df4f9b792 465 ddF_x += 2;
heroistired 0:9b8df4f9b792 466 f += ddF_x;
heroistired 0:9b8df4f9b792 467
heroistired 0:9b8df4f9b792 468 if (cornername & 0x1) {
heroistired 0:9b8df4f9b792 469 DrawFastVLine(x0+x, y0-y, 2*y+1+delta, colour);
heroistired 0:9b8df4f9b792 470 DrawFastVLine(x0+y, y0-x, 2*x+1+delta, colour);
heroistired 0:9b8df4f9b792 471 }
heroistired 0:9b8df4f9b792 472 if (cornername & 0x2) {
heroistired 0:9b8df4f9b792 473 DrawFastVLine(x0-x, y0-y, 2*y+1+delta, colour);
heroistired 0:9b8df4f9b792 474 DrawFastVLine(x0-y, y0-x, 2*x+1+delta, colour);
heroistired 0:9b8df4f9b792 475 }
heroistired 0:9b8df4f9b792 476 }
heroistired 0:9b8df4f9b792 477 }
heroistired 0:9b8df4f9b792 478
heroistired 0:9b8df4f9b792 479
heroistired 0:9b8df4f9b792 480
heroistired 0:9b8df4f9b792 481
heroistired 0:9b8df4f9b792 482
heroistired 0:9b8df4f9b792 483 ////////////////////////////////////////////////////////////////////////////////////////////////
heroistired 0:9b8df4f9b792 484 // used for drawing rounded corner radii
heroistired 0:9b8df4f9b792 485 ////////////////////////////////////////////////////////////////////////////////////////////////
heroistired 0:9b8df4f9b792 486 void ILI9340_Display::DrawCircleHelper( int16_t x0, int16_t y0, int16_t r, uint8_t cornername, uint16_t colour) {
heroistired 0:9b8df4f9b792 487 int16_t f = 1 - r;
heroistired 0:9b8df4f9b792 488 int16_t ddF_x = 1;
heroistired 0:9b8df4f9b792 489 int16_t ddF_y = -2 * r;
heroistired 0:9b8df4f9b792 490 int16_t x = 0;
heroistired 0:9b8df4f9b792 491 int16_t y = r;
heroistired 0:9b8df4f9b792 492
heroistired 0:9b8df4f9b792 493 while (x<y) {
heroistired 0:9b8df4f9b792 494 if (f >= 0) {
heroistired 0:9b8df4f9b792 495 y--;
heroistired 0:9b8df4f9b792 496 ddF_y += 2;
heroistired 0:9b8df4f9b792 497 f += ddF_y;
heroistired 0:9b8df4f9b792 498 }
heroistired 0:9b8df4f9b792 499 x++;
heroistired 0:9b8df4f9b792 500 ddF_x += 2;
heroistired 0:9b8df4f9b792 501 f += ddF_x;
heroistired 0:9b8df4f9b792 502 if (cornername & 0x4) {
heroistired 0:9b8df4f9b792 503 DrawPixel(x0 + x, y0 + y, colour);
heroistired 0:9b8df4f9b792 504 DrawPixel(x0 + y, y0 + x, colour);
heroistired 0:9b8df4f9b792 505 }
heroistired 0:9b8df4f9b792 506 if (cornername & 0x2) {
heroistired 0:9b8df4f9b792 507 DrawPixel(x0 + x, y0 - y, colour);
heroistired 0:9b8df4f9b792 508 DrawPixel(x0 + y, y0 - x, colour);
heroistired 0:9b8df4f9b792 509 }
heroistired 0:9b8df4f9b792 510 if (cornername & 0x8) {
heroistired 0:9b8df4f9b792 511 DrawPixel(x0 - y, y0 + x, colour);
heroistired 0:9b8df4f9b792 512 DrawPixel(x0 - x, y0 + y, colour);
heroistired 0:9b8df4f9b792 513 }
heroistired 0:9b8df4f9b792 514 if (cornername & 0x1) {
heroistired 0:9b8df4f9b792 515 DrawPixel(x0 - y, y0 - x, colour);
heroistired 0:9b8df4f9b792 516 DrawPixel(x0 - x, y0 - y, colour);
heroistired 0:9b8df4f9b792 517 }
heroistired 0:9b8df4f9b792 518 }
heroistired 0:9b8df4f9b792 519 }
heroistired 0:9b8df4f9b792 520
heroistired 0:9b8df4f9b792 521
heroistired 0:9b8df4f9b792 522
heroistired 0:9b8df4f9b792 523
heroistired 0:9b8df4f9b792 524 ////////////////////////////////////////////////////////////////////////////////////////////////
heroistired 0:9b8df4f9b792 525 // draw a rounded rectangle!
heroistired 0:9b8df4f9b792 526 ////////////////////////////////////////////////////////////////////////////////////////////////
heroistired 0:9b8df4f9b792 527 void ILI9340_Display::DrawRoundRect(int16_t x, int16_t y, int16_t w, int16_t h, int16_t r, uint16_t colour) {
heroistired 0:9b8df4f9b792 528 // smarter version
heroistired 0:9b8df4f9b792 529 DrawFastHLine(x+r , y , w-2*r, colour); // Top
heroistired 0:9b8df4f9b792 530 DrawFastHLine(x+r , y+h-1, w-2*r, colour); // Bottom
heroistired 0:9b8df4f9b792 531 DrawFastVLine( x , y+r , h-2*r, colour); // Left
heroistired 0:9b8df4f9b792 532 DrawFastVLine( x+w-1, y+r , h-2*r, colour); // Right
heroistired 0:9b8df4f9b792 533 // draw four corners
heroistired 0:9b8df4f9b792 534 DrawCircleHelper(x+r , y+r , r, 1, colour);
heroistired 0:9b8df4f9b792 535 DrawCircleHelper(x+w-r-1, y+r , r, 2, colour);
heroistired 0:9b8df4f9b792 536 DrawCircleHelper(x+w-r-1, y+h-r-1, r, 4, colour);
heroistired 0:9b8df4f9b792 537 DrawCircleHelper(x+r , y+h-r-1, r, 8, colour);
heroistired 0:9b8df4f9b792 538 }
heroistired 0:9b8df4f9b792 539
heroistired 0:9b8df4f9b792 540
heroistired 0:9b8df4f9b792 541
heroistired 0:9b8df4f9b792 542
heroistired 0:9b8df4f9b792 543
heroistired 0:9b8df4f9b792 544 ////////////////////////////////////////////////////////////////////////////////////////////////
heroistired 0:9b8df4f9b792 545 // fill a rounded rectangle!
heroistired 0:9b8df4f9b792 546 ////////////////////////////////////////////////////////////////////////////////////////////////
heroistired 0:9b8df4f9b792 547 void ILI9340_Display::FillRoundRect(int16_t x, int16_t y, int16_t w, int16_t h, int16_t r, uint16_t colour) {
heroistired 0:9b8df4f9b792 548 // smarter version
heroistired 0:9b8df4f9b792 549 FillRect(x+r, y, w-2*r, h, colour);
heroistired 0:9b8df4f9b792 550
heroistired 0:9b8df4f9b792 551 // draw four corners
heroistired 0:9b8df4f9b792 552 FillCircleHelper(x+w-r-1, y+r, r, 1, h-2*r-1, colour);
heroistired 0:9b8df4f9b792 553 FillCircleHelper(x+r , y+r, r, 2, h-2*r-1, colour);
heroistired 0:9b8df4f9b792 554 }
heroistired 0:9b8df4f9b792 555
heroistired 0:9b8df4f9b792 556
heroistired 0:9b8df4f9b792 557
heroistired 0:9b8df4f9b792 558
heroistired 0:9b8df4f9b792 559
heroistired 0:9b8df4f9b792 560 ////////////////////////////////////////////////////////////////////////////////////////////////
heroistired 0:9b8df4f9b792 561 // Pass 8-bit (each) R,G,B, get back 16-bit packed color
heroistired 0:9b8df4f9b792 562 ////////////////////////////////////////////////////////////////////////////////////////////////
heroistired 0:9b8df4f9b792 563 uint16_t ILI9340_Display::Colour565(uint8_t r, uint8_t g, uint8_t b) {
heroistired 0:9b8df4f9b792 564 return ((r & 0xF8) << 8) | ((g & 0xFC) << 3) | (b >> 3);
heroistired 0:9b8df4f9b792 565 }
heroistired 0:9b8df4f9b792 566
heroistired 0:9b8df4f9b792 567
heroistired 0:9b8df4f9b792 568
heroistired 0:9b8df4f9b792 569
heroistired 0:9b8df4f9b792 570 ////////////////////////////////////////////////////////////////////////////////////////////////
heroistired 0:9b8df4f9b792 571 // Writes an ascii character to the display
heroistired 0:9b8df4f9b792 572 ////////////////////////////////////////////////////////////////////////////////////////////////
heroistired 0:9b8df4f9b792 573 void ILI9340_Display::DrawAscii(unsigned char ascii, uint16_t x, uint16_t y, uint16_t size, uint16_t colour) {
heroistired 0:9b8df4f9b792 574 SetAddrWindow(x, y, x+size, y+size);
heroistired 0:9b8df4f9b792 575
heroistired 0:9b8df4f9b792 576 if( (ascii < 0x20) || (ascii > 0x7e) ) //check for valid ASCII char
heroistired 0:9b8df4f9b792 577 {
heroistired 0:9b8df4f9b792 578 ascii = '?'; //char not supported
heroistired 0:9b8df4f9b792 579 }
heroistired 0:9b8df4f9b792 580 for(unsigned char i=0; i<8; i++)
heroistired 0:9b8df4f9b792 581 {
heroistired 0:9b8df4f9b792 582 unsigned char temp = simpleFont[ascii - 0x20][i];
heroistired 0:9b8df4f9b792 583 for(unsigned char f=0; f<8; f++)
heroistired 0:9b8df4f9b792 584 {
heroistired 0:9b8df4f9b792 585 if( (temp>>f) & 0x01 )
heroistired 0:9b8df4f9b792 586 {
heroistired 0:9b8df4f9b792 587 switch(orientation)
heroistired 0:9b8df4f9b792 588 {
heroistired 0:9b8df4f9b792 589 case '0':
heroistired 0:9b8df4f9b792 590 FillRect(x+f*size, y-i*size, size, size, colour);
heroistired 0:9b8df4f9b792 591 break;
heroistired 0:9b8df4f9b792 592 case '1':
heroistired 0:9b8df4f9b792 593 FillRect(x-i*size, x-f*size, size, size, colour);
heroistired 0:9b8df4f9b792 594 break;
heroistired 0:9b8df4f9b792 595 case '2':
heroistired 0:9b8df4f9b792 596 FillRect(x-f*size, y+i*size, size, size, colour);
heroistired 0:9b8df4f9b792 597 break;
heroistired 0:9b8df4f9b792 598 case '3':
heroistired 0:9b8df4f9b792 599 default:
heroistired 0:9b8df4f9b792 600 FillRect(x+i*size, y+f*size, size, size, colour);
heroistired 0:9b8df4f9b792 601 }
heroistired 0:9b8df4f9b792 602 }
heroistired 0:9b8df4f9b792 603 }
heroistired 0:9b8df4f9b792 604 }
heroistired 0:9b8df4f9b792 605 }
heroistired 0:9b8df4f9b792 606
heroistired 0:9b8df4f9b792 607
heroistired 0:9b8df4f9b792 608
heroistired 0:9b8df4f9b792 609
heroistired 0:9b8df4f9b792 610
heroistired 0:9b8df4f9b792 611 //////////////////////////////////////////////////////////////////////////////////
heroistired 0:9b8df4f9b792 612 //功能 : 将一个字符串显示屏幕上
heroistired 0:9b8df4f9b792 613 //参数 : string 要显示的字符串
heroistired 0:9b8df4f9b792 614 // x,y 字符串中第一个字符的左上角像素的坐标值
heroistired 0:9b8df4f9b792 615 // size 字号 可选 1 2 3
heroistired 0:9b8df4f9b792 616 // colour 像素颜色
heroistired 0:9b8df4f9b792 617 //返回值 : 无
heroistired 0:9b8df4f9b792 618 //////////////////////////////////////////////////////////////////////////////////
heroistired 0:9b8df4f9b792 619 void ILI9340_Display::DrawString(char *string, uint16_t x, uint16_t y, uint8_t size, uint16_t colour)
heroistired 0:9b8df4f9b792 620 {
heroistired 0:9b8df4f9b792 621 while(*string)
heroistired 0:9b8df4f9b792 622 {
heroistired 0:9b8df4f9b792 623 DrawAscii(*string, x, y, size, colour);
heroistired 0:9b8df4f9b792 624 *string++;
heroistired 0:9b8df4f9b792 625 switch(orientation)
heroistired 0:9b8df4f9b792 626 {
heroistired 0:9b8df4f9b792 627 case '0':
heroistired 0:9b8df4f9b792 628 if(y > 0) y-=8*size; //Change position to next char
heroistired 0:9b8df4f9b792 629 break;
heroistired 0:9b8df4f9b792 630 case '1':
heroistired 0:9b8df4f9b792 631 if(x > 0) x-=8*size;
heroistired 0:9b8df4f9b792 632 break;
heroistired 0:9b8df4f9b792 633 case '2':
heroistired 0:9b8df4f9b792 634 if(y < _height) y+=8*size;
heroistired 0:9b8df4f9b792 635 break;
heroistired 0:9b8df4f9b792 636 case '3':
heroistired 0:9b8df4f9b792 637 default:
heroistired 0:9b8df4f9b792 638 if(x < _width) x+=8*size;
heroistired 0:9b8df4f9b792 639 }
heroistired 0:9b8df4f9b792 640 }
heroistired 0:9b8df4f9b792 641 }
heroistired 0:9b8df4f9b792 642
heroistired 0:9b8df4f9b792 643
heroistired 0:9b8df4f9b792 644 //////////////////////////////////////////////////////////////////////////////////
heroistired 0:9b8df4f9b792 645 //功能 : 将一个整数数据显示屏幕上
heroistired 0:9b8df4f9b792 646 //参数 : buffer 显示数据的字符串形式(输出量)
heroistired 0:9b8df4f9b792 647 // value 要显示的整数
heroistired 0:9b8df4f9b792 648 // spaceonbuffer 对整数的位数限制
heroistired 0:9b8df4f9b792 649 // countbase 计数进制
heroistired 0:9b8df4f9b792 650 // x,y 最高位数字的左上角像素的坐标值 如spaceonbuffer为5,则是万位数字的相应坐标,不论实际上该位有无数字
heroistired 0:9b8df4f9b792 651 // size 字号 可选 1 2 3
heroistired 0:9b8df4f9b792 652 // colour 像素颜色
heroistired 0:9b8df4f9b792 653 //返回值 : 无
heroistired 0:9b8df4f9b792 654 //////////////////////////////////////////////////////////////////////////////////
heroistired 0:9b8df4f9b792 655 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) {
heroistired 0:9b8df4f9b792 656 int workvalue = value;
heroistired 0:9b8df4f9b792 657 int i;
heroistired 0:9b8df4f9b792 658 int valuetowrite;
heroistired 0:9b8df4f9b792 659 int end_i = 0;
heroistired 0:9b8df4f9b792 660
heroistired 0:9b8df4f9b792 661 if (value < 0)
heroistired 0:9b8df4f9b792 662 {
heroistired 0:9b8df4f9b792 663 workvalue = -value;
heroistired 0:9b8df4f9b792 664 end_i = 1;
heroistired 0:9b8df4f9b792 665 buffer[0] = '-';
heroistired 0:9b8df4f9b792 666 }
heroistired 0:9b8df4f9b792 667
heroistired 0:9b8df4f9b792 668 for (i = spaceonbuffer - 1; i >= end_i; i--)
heroistired 0:9b8df4f9b792 669 {
heroistired 0:9b8df4f9b792 670 valuetowrite = (workvalue % countbase);
heroistired 0:9b8df4f9b792 671 if (workvalue == 0)
heroistired 0:9b8df4f9b792 672 {
heroistired 0:9b8df4f9b792 673 if (i == (spaceonbuffer - 1))
heroistired 0:9b8df4f9b792 674 {
heroistired 0:9b8df4f9b792 675 buffer[i] = 48; // ASCII 0
heroistired 0:9b8df4f9b792 676 } else {
heroistired 0:9b8df4f9b792 677 buffer[i] = 32; // ASCII SPACE
heroistired 0:9b8df4f9b792 678 }
heroistired 0:9b8df4f9b792 679 } else {
heroistired 0:9b8df4f9b792 680 if (valuetowrite > 9)
heroistired 0:9b8df4f9b792 681 {
heroistired 0:9b8df4f9b792 682 buffer[i] = valuetowrite + 55; // ASCII A-Z
heroistired 0:9b8df4f9b792 683 } else {
heroistired 0:9b8df4f9b792 684 buffer[i] = valuetowrite + 48; // ASCII of that character
heroistired 0:9b8df4f9b792 685 }
heroistired 0:9b8df4f9b792 686 };
heroistired 0:9b8df4f9b792 687 workvalue = (workvalue - valuetowrite) / countbase;
heroistired 0:9b8df4f9b792 688 }
heroistired 0:9b8df4f9b792 689
heroistired 0:9b8df4f9b792 690 DrawString(buffer, x, y, size, colour);
heroistired 0:9b8df4f9b792 691 }
heroistired 0:9b8df4f9b792 692
heroistired 0:9b8df4f9b792 693
heroistired 0:9b8df4f9b792 694
heroistired 0:9b8df4f9b792 695
heroistired 0:9b8df4f9b792 696
heroistired 0:9b8df4f9b792 697 ////////////////////////////////////////////////////////////////////////////////////////////////
heroistired 0:9b8df4f9b792 698 // Functional code to swap data contents of 16bit registers
heroistired 0:9b8df4f9b792 699 ////////////////////////////////////////////////////////////////////////////////////////////////
heroistired 0:9b8df4f9b792 700 void ILI9340_Display::Swap(int16_t *a, int16_t *b) {
heroistired 0:9b8df4f9b792 701
heroistired 0:9b8df4f9b792 702 int16_t x = *a;
heroistired 0:9b8df4f9b792 703 *a = *b;
heroistired 0:9b8df4f9b792 704 *b = x;
heroistired 0:9b8df4f9b792 705 }
heroistired 0:9b8df4f9b792 706
heroistired 0:9b8df4f9b792 707
heroistired 0:9b8df4f9b792 708
heroistired 0:9b8df4f9b792 709
heroistired 0:9b8df4f9b792 710 ////////////////////////////////////////////////////////////////////////////////////////////////
heroistired 0:9b8df4f9b792 711 // Draws a line with any length and orientation
heroistired 0:9b8df4f9b792 712 ////////////////////////////////////////////////////////////////////////////////////////////////
heroistired 0:9b8df4f9b792 713 void ILI9340_Display::DrawLine(int16_t x0, int16_t y0, int16_t x1, int16_t y1, uint16_t colour){
heroistired 0:9b8df4f9b792 714 int16_t steep = abs(y1 - y0) > abs(x1 - x0);
heroistired 0:9b8df4f9b792 715 if (steep) {
heroistired 0:9b8df4f9b792 716 Swap(&x0, &y0);
heroistired 0:9b8df4f9b792 717 Swap(&x1, &y1);
heroistired 0:9b8df4f9b792 718 }
heroistired 0:9b8df4f9b792 719
heroistired 0:9b8df4f9b792 720 if (x0 > x1) {
heroistired 0:9b8df4f9b792 721 Swap(&x0, &x1);
heroistired 0:9b8df4f9b792 722 Swap(&y0, &y1);
heroistired 0:9b8df4f9b792 723 }
heroistired 0:9b8df4f9b792 724
heroistired 0:9b8df4f9b792 725 int16_t dx, dy;
heroistired 0:9b8df4f9b792 726 dx = x1 - x0;
heroistired 0:9b8df4f9b792 727 dy = abs(y1 - y0);
heroistired 0:9b8df4f9b792 728
heroistired 0:9b8df4f9b792 729 int16_t err = dx / 2;
heroistired 0:9b8df4f9b792 730 int16_t ystep;
heroistired 0:9b8df4f9b792 731
heroistired 0:9b8df4f9b792 732 if (y0 < y1) {
heroistired 0:9b8df4f9b792 733 ystep = 1;
heroistired 0:9b8df4f9b792 734 } else {
heroistired 0:9b8df4f9b792 735 ystep = -1;
heroistired 0:9b8df4f9b792 736 }
heroistired 0:9b8df4f9b792 737
heroistired 0:9b8df4f9b792 738 for (; x0<=x1; x0++) {
heroistired 0:9b8df4f9b792 739 if (steep) {
heroistired 0:9b8df4f9b792 740 DrawPixel(y0, x0, colour);
heroistired 0:9b8df4f9b792 741 } else {
heroistired 0:9b8df4f9b792 742 DrawPixel(x0, y0, colour);
heroistired 0:9b8df4f9b792 743 }
heroistired 0:9b8df4f9b792 744 err -= dy;
heroistired 0:9b8df4f9b792 745 if (err < 0) {
heroistired 0:9b8df4f9b792 746 y0 += ystep;
heroistired 0:9b8df4f9b792 747 err += dx;
heroistired 0:9b8df4f9b792 748 }
heroistired 0:9b8df4f9b792 749 }
heroistired 0:9b8df4f9b792 750 }
heroistired 0:9b8df4f9b792 751