madhu sudhana / Mbed 2 deprecated DL144128_LCD_b

output

Dependencies:   images mbed

Fork of display by madhu sudhana

ili9163lcd.cpp@0:c0be4e018a09, 2014-06-14 (annotated)

Committer:
morita
Date:
Sat Jun 14 02:27:06 2014 +0000
Revision:
0:c0be4e018a09
Child:
1:b64c81071d96
DL144128TF driving Test.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
morita 0:c0be4e018a09 1 /**
morita 0:c0be4e018a09 2 * @file ili9163lcd.c
morita 0:c0be4e018a09 3 * @brief ILI9163 128x128 LCD Driver
morita 0:c0be4e018a09 4 *
morita 0:c0be4e018a09 5 * This code has been ported from the ili9163lcd library for mbed
morita 0:c0be4e018a09 6 * made by Jun Morita.
morita 0:c0be4e018a09 7 * Source form <http://files.noccylabs.info/lib430/liblcd/ili9163lcd_8c.html>
morita 0:c0be4e018a09 8 *
morita 0:c0be4e018a09 9 * This code has been ported from the ili9163lcd library for avr made
morita 0:c0be4e018a09 10 * by Simon Inns, to run on a msp430.
morita 0:c0be4e018a09 11 *
morita 0:c0be4e018a09 12 * This program is free software: you can redistribute it and/or modify
morita 0:c0be4e018a09 13 * it under the terms of the GNU General Public License as published by
morita 0:c0be4e018a09 14 * the Free Software Foundation, either version 3 of the License, or
morita 0:c0be4e018a09 15 * (at your option) any later version.
morita 0:c0be4e018a09 16 *
morita 0:c0be4e018a09 17 * This program is distributed in the hope that it will be useful,
morita 0:c0be4e018a09 18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
morita 0:c0be4e018a09 19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
morita 0:c0be4e018a09 20 * GNU General Public License for more details.
morita 0:c0be4e018a09 21 *
morita 0:c0be4e018a09 22 * You should have received a copy of the GNU General Public License
morita 0:c0be4e018a09 23 * along with this program. If not, see <http://www.gnu.org/licenses/>.
morita 0:c0be4e018a09 24 *
morita 0:c0be4e018a09 25 * @author Jun Morita (iccraft)
morita 0:c0be4e018a09 26 * @author Simon Inns <simon.inns@gmail.com>
morita 0:c0be4e018a09 27 * @author Christopher Vagnetoft (NoccyLabs)
morita 0:c0be4e018a09 28 * @copyright (C) 2012 Simon Inns
morita 0:c0be4e018a09 29 * @copyright parts (C) 2012 NoccyLabs
morita 0:c0be4e018a09 30 */
morita 0:c0be4e018a09 31
morita 0:c0be4e018a09 32 #include "mbed.h"
morita 0:c0be4e018a09 33 #include "font5x8.h"
morita 0:c0be4e018a09 34 #include "ili9163lcd.h"
morita 0:c0be4e018a09 35
morita 0:c0be4e018a09 36 // Connection of mbed pins.
morita 0:c0be4e018a09 37 DigitalOut SCK_(D2);
morita 0:c0be4e018a09 38 DigitalOut SDA_(D3);
morita 0:c0be4e018a09 39 DigitalOut A0_(D4);
morita 0:c0be4e018a09 40 DigitalOut RESET_(D5);
morita 0:c0be4e018a09 41 DigitalOut CS_(D6);
morita 0:c0be4e018a09 42
morita 0:c0be4e018a09 43 // Low-level LCD driving functions --------------------------------------------------------------------------
morita 0:c0be4e018a09 44
morita 0:c0be4e018a09 45 // Reset the LCD hardware
morita 0:c0be4e018a09 46 void lcdReset(void)
morita 0:c0be4e018a09 47 {
morita 0:c0be4e018a09 48 // Reset pin is active low (0 = reset, 1 = ready)
morita 0:c0be4e018a09 49 RESET_ = 0;
morita 0:c0be4e018a09 50 wait_ms(50);
morita 0:c0be4e018a09 51
morita 0:c0be4e018a09 52 RESET_ = 1;
morita 0:c0be4e018a09 53 wait_ms(120);
morita 0:c0be4e018a09 54 }
morita 0:c0be4e018a09 55
morita 0:c0be4e018a09 56 void lcdWriteCommand(uint8_t address)
morita 0:c0be4e018a09 57 {
morita 0:c0be4e018a09 58 uint8_t i;
morita 0:c0be4e018a09 59
morita 0:c0be4e018a09 60 CS_ = 0;
morita 0:c0be4e018a09 61 A0_ = 0;
morita 0:c0be4e018a09 62 for(i=0;i<8;i++){
morita 0:c0be4e018a09 63 if(address & 128)SDA_= 1; else SDA_ = 0;
morita 0:c0be4e018a09 64 SCK_ = 1;
morita 0:c0be4e018a09 65 address <<= 1;
morita 0:c0be4e018a09 66 SCK_ = 0;
morita 0:c0be4e018a09 67 }
morita 0:c0be4e018a09 68 wait_us(1);
morita 0:c0be4e018a09 69 CS_ = 1;
morita 0:c0be4e018a09 70 }
morita 0:c0be4e018a09 71
morita 0:c0be4e018a09 72 void lcdWriteParameter(uint8_t parameter)
morita 0:c0be4e018a09 73 {
morita 0:c0be4e018a09 74 uint8_t i;
morita 0:c0be4e018a09 75
morita 0:c0be4e018a09 76 CS_ = 0;
morita 0:c0be4e018a09 77 A0_ = 1;
morita 0:c0be4e018a09 78 for(i=0;i<8;i++){
morita 0:c0be4e018a09 79 if(parameter & 128)SDA_= 1; else SDA_ = 0;
morita 0:c0be4e018a09 80 SCK_ = 1;
morita 0:c0be4e018a09 81 parameter <<= 1;
morita 0:c0be4e018a09 82 SCK_ = 0;
morita 0:c0be4e018a09 83 }
morita 0:c0be4e018a09 84 wait_us(1);
morita 0:c0be4e018a09 85 CS_ = 1;
morita 0:c0be4e018a09 86 }
morita 0:c0be4e018a09 87
morita 0:c0be4e018a09 88 void lcdWriteData(uint8_t dataByte1, uint8_t dataByte2)
morita 0:c0be4e018a09 89 {
morita 0:c0be4e018a09 90 uint8_t i;
morita 0:c0be4e018a09 91
morita 0:c0be4e018a09 92 CS_ = 0;
morita 0:c0be4e018a09 93 A0_ = 1;
morita 0:c0be4e018a09 94 for(i=0;i<8;i++){
morita 0:c0be4e018a09 95 if(dataByte1 & 128)SDA_= 1; else SDA_ = 0;
morita 0:c0be4e018a09 96 SCK_ = 1;
morita 0:c0be4e018a09 97 dataByte1 <<= 1;
morita 0:c0be4e018a09 98 SCK_ = 0;
morita 0:c0be4e018a09 99 }
morita 0:c0be4e018a09 100 wait_us(1);
morita 0:c0be4e018a09 101 for(i=0;i<8;i++){
morita 0:c0be4e018a09 102 if(dataByte2 & 128)SDA_= 1; else SDA_ = 0;
morita 0:c0be4e018a09 103 SCK_ = 1;
morita 0:c0be4e018a09 104 dataByte2 <<= 1;
morita 0:c0be4e018a09 105 SCK_ = 0;
morita 0:c0be4e018a09 106 }
morita 0:c0be4e018a09 107 wait_us(1);
morita 0:c0be4e018a09 108 CS_ = 1;
morita 0:c0be4e018a09 109 }
morita 0:c0be4e018a09 110
morita 0:c0be4e018a09 111 // Initialise the display with the require screen orientation
morita 0:c0be4e018a09 112 void lcdInitialise(uint8_t orientation)
morita 0:c0be4e018a09 113 {
morita 0:c0be4e018a09 114 CS_ = 1;
morita 0:c0be4e018a09 115 SCK_ = 0;
morita 0:c0be4e018a09 116 RESET_ = 1;
morita 0:c0be4e018a09 117
morita 0:c0be4e018a09 118 // Hardware reset the LCD
morita 0:c0be4e018a09 119 lcdReset();
morita 0:c0be4e018a09 120
morita 0:c0be4e018a09 121 lcdWriteCommand(EXIT_SLEEP_MODE);
morita 0:c0be4e018a09 122 wait_ms(5); // Wait for the screen to wake up
morita 0:c0be4e018a09 123
morita 0:c0be4e018a09 124 lcdWriteCommand(SET_PIXEL_FORMAT);
morita 0:c0be4e018a09 125 lcdWriteParameter(0x05); // 16 bits per pixel
morita 0:c0be4e018a09 126
morita 0:c0be4e018a09 127 lcdWriteCommand(SET_GAMMA_CURVE);
morita 0:c0be4e018a09 128 lcdWriteParameter(0x04); // Select gamma curve 3
morita 0:c0be4e018a09 129
morita 0:c0be4e018a09 130 lcdWriteCommand(GAM_R_SEL);
morita 0:c0be4e018a09 131 lcdWriteParameter(0x01); // Gamma adjustment enabled
morita 0:c0be4e018a09 132
morita 0:c0be4e018a09 133 lcdWriteCommand(POSITIVE_GAMMA_CORRECT);
morita 0:c0be4e018a09 134 lcdWriteParameter(0x3f); // 1st Parameter
morita 0:c0be4e018a09 135 lcdWriteParameter(0x25); // 2nd Parameter
morita 0:c0be4e018a09 136 lcdWriteParameter(0x1c); // 3rd Parameter
morita 0:c0be4e018a09 137 lcdWriteParameter(0x1e); // 4th Parameter
morita 0:c0be4e018a09 138 lcdWriteParameter(0x20); // 5th Parameter
morita 0:c0be4e018a09 139 lcdWriteParameter(0x12); // 6th Parameter
morita 0:c0be4e018a09 140 lcdWriteParameter(0x2a); // 7th Parameter
morita 0:c0be4e018a09 141 lcdWriteParameter(0x90); // 8th Parameter
morita 0:c0be4e018a09 142 lcdWriteParameter(0x24); // 9th Parameter
morita 0:c0be4e018a09 143 lcdWriteParameter(0x11); // 10th Parameter
morita 0:c0be4e018a09 144 lcdWriteParameter(0x00); // 11th Parameter
morita 0:c0be4e018a09 145 lcdWriteParameter(0x00); // 12th Parameter
morita 0:c0be4e018a09 146 lcdWriteParameter(0x00); // 13th Parameter
morita 0:c0be4e018a09 147 lcdWriteParameter(0x00); // 14th Parameter
morita 0:c0be4e018a09 148 lcdWriteParameter(0x00); // 15th Parameter
morita 0:c0be4e018a09 149
morita 0:c0be4e018a09 150 lcdWriteCommand(NEGATIVE_GAMMA_CORRECT);
morita 0:c0be4e018a09 151 lcdWriteParameter(0x20); // 1st Parameter
morita 0:c0be4e018a09 152 lcdWriteParameter(0x20); // 2nd Parameter
morita 0:c0be4e018a09 153 lcdWriteParameter(0x20); // 3rd Parameter
morita 0:c0be4e018a09 154 lcdWriteParameter(0x20); // 4th Parameter
morita 0:c0be4e018a09 155 lcdWriteParameter(0x05); // 5th Parameter
morita 0:c0be4e018a09 156 lcdWriteParameter(0x00); // 6th Parameter
morita 0:c0be4e018a09 157 lcdWriteParameter(0x15); // 7th Parameter
morita 0:c0be4e018a09 158 lcdWriteParameter(0xa7); // 8th Parameter
morita 0:c0be4e018a09 159 lcdWriteParameter(0x3d); // 9th Parameter
morita 0:c0be4e018a09 160 lcdWriteParameter(0x18); // 10th Parameter
morita 0:c0be4e018a09 161 lcdWriteParameter(0x25); // 11th Parameter
morita 0:c0be4e018a09 162 lcdWriteParameter(0x2a); // 12th Parameter
morita 0:c0be4e018a09 163 lcdWriteParameter(0x2b); // 13th Parameter
morita 0:c0be4e018a09 164 lcdWriteParameter(0x2b); // 14th Parameter
morita 0:c0be4e018a09 165 lcdWriteParameter(0x3a); // 15th Parameter
morita 0:c0be4e018a09 166
morita 0:c0be4e018a09 167 lcdWriteCommand(FRAME_RATE_CONTROL1);
morita 0:c0be4e018a09 168 lcdWriteParameter(0x08); // DIVA = 8
morita 0:c0be4e018a09 169 lcdWriteParameter(0x08); // VPA = 8
morita 0:c0be4e018a09 170
morita 0:c0be4e018a09 171 lcdWriteCommand(DISPLAY_INVERSION);
morita 0:c0be4e018a09 172 lcdWriteParameter(0x07); // NLA = 1, NLB = 1, NLC = 1 (all on Frame Inversion)
morita 0:c0be4e018a09 173
morita 0:c0be4e018a09 174 lcdWriteCommand(POWER_CONTROL1);
morita 0:c0be4e018a09 175 lcdWriteParameter(0x0a); // VRH = 10: GVDD = 4.30
morita 0:c0be4e018a09 176 lcdWriteParameter(0x02); // VC = 2: VCI1 = 2.65
morita 0:c0be4e018a09 177
morita 0:c0be4e018a09 178 lcdWriteCommand(POWER_CONTROL2);
morita 0:c0be4e018a09 179 lcdWriteParameter(0x02); // BT = 2: AVDD = 2xVCI1, VCL = -1xVCI1, VGH = 5xVCI1, VGL = -2xVCI1
morita 0:c0be4e018a09 180
morita 0:c0be4e018a09 181 lcdWriteCommand(VCOM_CONTROL1);
morita 0:c0be4e018a09 182 lcdWriteParameter(0x50); // VMH = 80: VCOMH voltage = 4.5
morita 0:c0be4e018a09 183 lcdWriteParameter(0x5b); // VML = 91: VCOML voltage = -0.225
morita 0:c0be4e018a09 184
morita 0:c0be4e018a09 185 lcdWriteCommand(VCOM_OFFSET_CONTROL);
morita 0:c0be4e018a09 186 lcdWriteParameter(0x40); // nVM = 0, VMF = 64: VCOMH output = VMH, VCOML output = VML
morita 0:c0be4e018a09 187
morita 0:c0be4e018a09 188 lcdWriteCommand(SET_COLUMN_ADDRESS);
morita 0:c0be4e018a09 189 lcdWriteParameter(0x00); // XSH
morita 0:c0be4e018a09 190 lcdWriteParameter(0x00); // XSL
morita 0:c0be4e018a09 191 lcdWriteParameter(0x00); // XEH
morita 0:c0be4e018a09 192 lcdWriteParameter(0x7f); // XEL (128 pixels x)
morita 0:c0be4e018a09 193
morita 0:c0be4e018a09 194 lcdWriteCommand(SET_PAGE_ADDRESS);
morita 0:c0be4e018a09 195 lcdWriteParameter(0x00);
morita 0:c0be4e018a09 196 lcdWriteParameter(0x00);
morita 0:c0be4e018a09 197 lcdWriteParameter(0x00);
morita 0:c0be4e018a09 198 lcdWriteParameter(0x7f); // 128 pixels y
morita 0:c0be4e018a09 199
morita 0:c0be4e018a09 200 // Select display orientation
morita 0:c0be4e018a09 201 lcdWriteCommand(SET_ADDRESS_MODE);
morita 0:c0be4e018a09 202 lcdWriteParameter(orientation);
morita 0:c0be4e018a09 203
morita 0:c0be4e018a09 204 // Set the display to on
morita 0:c0be4e018a09 205 lcdWriteCommand(SET_DISPLAY_ON);
morita 0:c0be4e018a09 206 lcdWriteCommand(WRITE_MEMORY_START);
morita 0:c0be4e018a09 207 }
morita 0:c0be4e018a09 208
morita 0:c0be4e018a09 209 // LCD graphics functions -----------------------------------------------------------------------------------
morita 0:c0be4e018a09 210
morita 0:c0be4e018a09 211 void lcdClearDisplay(uint16_t colour)
morita 0:c0be4e018a09 212 {
morita 0:c0be4e018a09 213 uint16_t pixel;
morita 0:c0be4e018a09 214
morita 0:c0be4e018a09 215 // Set the column address to 0-127
morita 0:c0be4e018a09 216 lcdWriteCommand(SET_COLUMN_ADDRESS);
morita 0:c0be4e018a09 217 lcdWriteParameter(0x00);
morita 0:c0be4e018a09 218 lcdWriteParameter(0x00);
morita 0:c0be4e018a09 219 lcdWriteParameter(0x00);
morita 0:c0be4e018a09 220 lcdWriteParameter(0x7f);
morita 0:c0be4e018a09 221
morita 0:c0be4e018a09 222 // Set the page address to 0-127
morita 0:c0be4e018a09 223 lcdWriteCommand(SET_PAGE_ADDRESS);
morita 0:c0be4e018a09 224 lcdWriteParameter(0x00);
morita 0:c0be4e018a09 225 lcdWriteParameter(0x00);
morita 0:c0be4e018a09 226 lcdWriteParameter(0x00);
morita 0:c0be4e018a09 227 lcdWriteParameter(0x7f);
morita 0:c0be4e018a09 228
morita 0:c0be4e018a09 229 // Plot the pixels
morita 0:c0be4e018a09 230 lcdWriteCommand(WRITE_MEMORY_START);
morita 0:c0be4e018a09 231 for(pixel = 0; pixel < 16385; pixel++) lcdWriteData(colour >> 8, colour);
morita 0:c0be4e018a09 232 }
morita 0:c0be4e018a09 233
morita 0:c0be4e018a09 234 void lcdPlot(uint8_t x, uint8_t y, uint16_t colour)
morita 0:c0be4e018a09 235 {
morita 0:c0be4e018a09 236 // Horizontal Address Start Position
morita 0:c0be4e018a09 237 lcdWriteCommand(SET_COLUMN_ADDRESS);
morita 0:c0be4e018a09 238 lcdWriteParameter(0x00);
morita 0:c0be4e018a09 239 lcdWriteParameter(x);
morita 0:c0be4e018a09 240 lcdWriteParameter(0x00);
morita 0:c0be4e018a09 241 lcdWriteParameter(0x7f);
morita 0:c0be4e018a09 242
morita 0:c0be4e018a09 243 // Vertical Address end Position
morita 0:c0be4e018a09 244 lcdWriteCommand(SET_PAGE_ADDRESS);
morita 0:c0be4e018a09 245 lcdWriteParameter(0x00);
morita 0:c0be4e018a09 246 lcdWriteParameter(y);
morita 0:c0be4e018a09 247 lcdWriteParameter(0x00);
morita 0:c0be4e018a09 248 lcdWriteParameter(0x7f);
morita 0:c0be4e018a09 249
morita 0:c0be4e018a09 250 // Plot the point
morita 0:c0be4e018a09 251 lcdWriteCommand(WRITE_MEMORY_START);
morita 0:c0be4e018a09 252 lcdWriteData(colour >> 8, colour);
morita 0:c0be4e018a09 253 }
morita 0:c0be4e018a09 254
morita 0:c0be4e018a09 255 // Draw a line from x0, y0 to x1, y1
morita 0:c0be4e018a09 256 // Note: This is a version of Bresenham's line drawing algorithm
morita 0:c0be4e018a09 257 // It only draws lines from left to right!
morita 0:c0be4e018a09 258 void lcdLine(int16_t x0, int16_t y0, int16_t x1, int16_t y1, uint16_t colour)
morita 0:c0be4e018a09 259 {
morita 0:c0be4e018a09 260 int16_t dy = y1 - y0;
morita 0:c0be4e018a09 261 int16_t dx = x1 - x0;
morita 0:c0be4e018a09 262 int16_t stepx, stepy;
morita 0:c0be4e018a09 263
morita 0:c0be4e018a09 264 if (dy < 0)
morita 0:c0be4e018a09 265 {
morita 0:c0be4e018a09 266 dy = -dy; stepy = -1;
morita 0:c0be4e018a09 267 }
morita 0:c0be4e018a09 268 else stepy = 1;
morita 0:c0be4e018a09 269
morita 0:c0be4e018a09 270 if (dx < 0)
morita 0:c0be4e018a09 271 {
morita 0:c0be4e018a09 272 dx = -dx; stepx = -1;
morita 0:c0be4e018a09 273 }
morita 0:c0be4e018a09 274 else stepx = 1;
morita 0:c0be4e018a09 275
morita 0:c0be4e018a09 276 dy <<= 1; // dy is now 2*dy
morita 0:c0be4e018a09 277 dx <<= 1; // dx is now 2*dx
morita 0:c0be4e018a09 278
morita 0:c0be4e018a09 279 lcdPlot(x0, y0, colour);
morita 0:c0be4e018a09 280
morita 0:c0be4e018a09 281 if (dx > dy) {
morita 0:c0be4e018a09 282 int fraction = dy - (dx >> 1); // same as 2*dy - dx
morita 0:c0be4e018a09 283 while (x0 != x1)
morita 0:c0be4e018a09 284 {
morita 0:c0be4e018a09 285 if (fraction >= 0)
morita 0:c0be4e018a09 286 {
morita 0:c0be4e018a09 287 y0 += stepy;
morita 0:c0be4e018a09 288 fraction -= dx; // same as fraction -= 2*dx
morita 0:c0be4e018a09 289 }
morita 0:c0be4e018a09 290
morita 0:c0be4e018a09 291 x0 += stepx;
morita 0:c0be4e018a09 292 fraction += dy; // same as fraction -= 2*dy
morita 0:c0be4e018a09 293 lcdPlot(x0, y0, colour);
morita 0:c0be4e018a09 294 }
morita 0:c0be4e018a09 295 }
morita 0:c0be4e018a09 296 else
morita 0:c0be4e018a09 297 {
morita 0:c0be4e018a09 298 int fraction = dx - (dy >> 1);
morita 0:c0be4e018a09 299 while (y0 != y1)
morita 0:c0be4e018a09 300 {
morita 0:c0be4e018a09 301 if (fraction >= 0)
morita 0:c0be4e018a09 302 {
morita 0:c0be4e018a09 303 x0 += stepx;
morita 0:c0be4e018a09 304 fraction -= dy;
morita 0:c0be4e018a09 305 }
morita 0:c0be4e018a09 306
morita 0:c0be4e018a09 307 y0 += stepy;
morita 0:c0be4e018a09 308 fraction += dx;
morita 0:c0be4e018a09 309 lcdPlot(x0, y0, colour);
morita 0:c0be4e018a09 310 }
morita 0:c0be4e018a09 311 }
morita 0:c0be4e018a09 312 }
morita 0:c0be4e018a09 313
morita 0:c0be4e018a09 314 // Draw a rectangle between x0, y0 and x1, y1
morita 0:c0be4e018a09 315 void lcdRectangle(int16_t x0, int16_t y0, int16_t x1, int16_t y1, uint16_t colour)
morita 0:c0be4e018a09 316 {
morita 0:c0be4e018a09 317 lcdLine(x0, y0, x0, y1, colour);
morita 0:c0be4e018a09 318 lcdLine(x0, y1, x1, y1, colour);
morita 0:c0be4e018a09 319 lcdLine(x1, y0, x1, y1, colour);
morita 0:c0be4e018a09 320 lcdLine(x0, y0, x1, y0, colour);
morita 0:c0be4e018a09 321 }
morita 0:c0be4e018a09 322
morita 0:c0be4e018a09 323 // Draw a filled rectangle
morita 0:c0be4e018a09 324 // Note: y1 must be greater than y0 and x1 must be greater than x0
morita 0:c0be4e018a09 325 // for this to work
morita 0:c0be4e018a09 326 void lcdFilledRectangle(int16_t x0, int16_t y0, int16_t x1, int16_t y1, uint16_t colour)
morita 0:c0be4e018a09 327 {
morita 0:c0be4e018a09 328 uint16_t pixels;
morita 0:c0be4e018a09 329
morita 0:c0be4e018a09 330 // To speed up plotting we define a x window with the width of the
morita 0:c0be4e018a09 331 // rectangle and then just output the required number of bytes to
morita 0:c0be4e018a09 332 // fill down to the end point
morita 0:c0be4e018a09 333
morita 0:c0be4e018a09 334 lcdWriteCommand(SET_COLUMN_ADDRESS); // Horizontal Address Start Position
morita 0:c0be4e018a09 335 lcdWriteParameter(0x00);
morita 0:c0be4e018a09 336 lcdWriteParameter(x0);
morita 0:c0be4e018a09 337 lcdWriteParameter(0x00);
morita 0:c0be4e018a09 338 lcdWriteParameter(x1);
morita 0:c0be4e018a09 339
morita 0:c0be4e018a09 340 lcdWriteCommand(SET_PAGE_ADDRESS); // Vertical Address end Position
morita 0:c0be4e018a09 341 lcdWriteParameter(0x00);
morita 0:c0be4e018a09 342 lcdWriteParameter(y0);
morita 0:c0be4e018a09 343 lcdWriteParameter(0x00);
morita 0:c0be4e018a09 344 lcdWriteParameter(0x7f);
morita 0:c0be4e018a09 345
morita 0:c0be4e018a09 346 lcdWriteCommand(WRITE_MEMORY_START);
morita 0:c0be4e018a09 347
morita 0:c0be4e018a09 348 for (pixels = 0; pixels < (((x1 - x0) + 1) * ((y1 - y0) + 1)); pixels++)
morita 0:c0be4e018a09 349 lcdWriteData(colour >> 8, colour);;
morita 0:c0be4e018a09 350 }
morita 0:c0be4e018a09 351
morita 0:c0be4e018a09 352 // Draw a circle
morita 0:c0be4e018a09 353 // Note: This is another version of Bresenham's line drawing algorithm.
morita 0:c0be4e018a09 354 // There's plenty of documentation on the web if you are curious
morita 0:c0be4e018a09 355 // how this works.
morita 0:c0be4e018a09 356 void lcdCircle(int16_t xCentre, int16_t yCentre, int16_t radius, uint16_t colour)
morita 0:c0be4e018a09 357 {
morita 0:c0be4e018a09 358 int16_t x = 0, y = radius;
morita 0:c0be4e018a09 359 int16_t d = 3 - (2 * radius);
morita 0:c0be4e018a09 360
morita 0:c0be4e018a09 361 while(x <= y)
morita 0:c0be4e018a09 362 {
morita 0:c0be4e018a09 363 lcdPlot(xCentre + x, yCentre + y, colour);
morita 0:c0be4e018a09 364 lcdPlot(xCentre + y, yCentre + x, colour);
morita 0:c0be4e018a09 365 lcdPlot(xCentre - x, yCentre + y, colour);
morita 0:c0be4e018a09 366 lcdPlot(xCentre + y, yCentre - x, colour);
morita 0:c0be4e018a09 367 lcdPlot(xCentre - x, yCentre - y, colour);
morita 0:c0be4e018a09 368 lcdPlot(xCentre - y, yCentre - x, colour);
morita 0:c0be4e018a09 369 lcdPlot(xCentre + x, yCentre - y, colour);
morita 0:c0be4e018a09 370 lcdPlot(xCentre - y, yCentre + x, colour);
morita 0:c0be4e018a09 371
morita 0:c0be4e018a09 372 if (d < 0) d += (4 * x) + 6;
morita 0:c0be4e018a09 373 else
morita 0:c0be4e018a09 374 {
morita 0:c0be4e018a09 375 d += (4 * (x - y)) + 10;
morita 0:c0be4e018a09 376 y -= 1;
morita 0:c0be4e018a09 377 }
morita 0:c0be4e018a09 378
morita 0:c0be4e018a09 379 x++;
morita 0:c0be4e018a09 380 }
morita 0:c0be4e018a09 381 }
morita 0:c0be4e018a09 382
morita 0:c0be4e018a09 383 // LCD text manipulation functions --------------------------------------------------------------------------
morita 0:c0be4e018a09 384
morita 0:c0be4e018a09 385 // Plot a character at the specified x, y co-ordinates (top left hand corner of character)
morita 0:c0be4e018a09 386 void lcdPutCh(unsigned char character, uint8_t x, uint8_t y, uint16_t fgColour, uint16_t bgColour)
morita 0:c0be4e018a09 387 {
morita 0:c0be4e018a09 388 uint8_t row, column;
morita 0:c0be4e018a09 389
morita 0:c0be4e018a09 390 // To speed up plotting we define a x window of 6 pixels and then
morita 0:c0be4e018a09 391 // write out one row at a time. This means the LCD will correctly
morita 0:c0be4e018a09 392 // update the memory pointer saving us a good few bytes
morita 0:c0be4e018a09 393
morita 0:c0be4e018a09 394 lcdWriteCommand(SET_COLUMN_ADDRESS); // Horizontal Address Start Position
morita 0:c0be4e018a09 395 lcdWriteParameter(0x00);
morita 0:c0be4e018a09 396 lcdWriteParameter(x);
morita 0:c0be4e018a09 397 lcdWriteParameter(0x00);
morita 0:c0be4e018a09 398 lcdWriteParameter(x+5);
morita 0:c0be4e018a09 399
morita 0:c0be4e018a09 400 lcdWriteCommand(SET_PAGE_ADDRESS); // Vertical Address end Position
morita 0:c0be4e018a09 401 lcdWriteParameter(0x00);
morita 0:c0be4e018a09 402 lcdWriteParameter(y);
morita 0:c0be4e018a09 403 lcdWriteParameter(0x00);
morita 0:c0be4e018a09 404 lcdWriteParameter(0x7f);
morita 0:c0be4e018a09 405
morita 0:c0be4e018a09 406 lcdWriteCommand(WRITE_MEMORY_START);
morita 0:c0be4e018a09 407
morita 0:c0be4e018a09 408 // Plot the font data
morita 0:c0be4e018a09 409 for (row = 0; row < 8; row++)
morita 0:c0be4e018a09 410 {
morita 0:c0be4e018a09 411 for (column = 0; column < 6; column++)
morita 0:c0be4e018a09 412 {
morita 0:c0be4e018a09 413 if ((font5x8[character][column]) & (1 << row))
morita 0:c0be4e018a09 414 lcdWriteData(fgColour >> 8, fgColour);
morita 0:c0be4e018a09 415 else lcdWriteData(bgColour >> 8, bgColour);
morita 0:c0be4e018a09 416 }
morita 0:c0be4e018a09 417 }
morita 0:c0be4e018a09 418 }
morita 0:c0be4e018a09 419
morita 0:c0be4e018a09 420 // Plot a string of characters to the LCD
morita 0:c0be4e018a09 421 void lcdPutS(const char *string, uint8_t x, uint8_t y, uint16_t fgColour, uint16_t bgColour)
morita 0:c0be4e018a09 422 {
morita 0:c0be4e018a09 423 uint8_t origin = x;
morita 0:c0be4e018a09 424
morita 0:c0be4e018a09 425 for (uint8_t characterNumber = 0; characterNumber < strlen(string); characterNumber++)
morita 0:c0be4e018a09 426 {
morita 0:c0be4e018a09 427 // Check if we are out of bounds and move to
morita 0:c0be4e018a09 428 // the next line if we are
morita 0:c0be4e018a09 429 if (x > 121)
morita 0:c0be4e018a09 430 {
morita 0:c0be4e018a09 431 x = origin;
morita 0:c0be4e018a09 432 y += 8;
morita 0:c0be4e018a09 433 }
morita 0:c0be4e018a09 434
morita 0:c0be4e018a09 435 // If we move past the bottom of the screen just exit
morita 0:c0be4e018a09 436 if (y > 120) break;
morita 0:c0be4e018a09 437
morita 0:c0be4e018a09 438 // Plot the current character
morita 0:c0be4e018a09 439 lcdPutCh(string[characterNumber], x, y, fgColour, bgColour);
morita 0:c0be4e018a09 440 x += 6;
morita 0:c0be4e018a09 441 }
morita 0:c0be4e018a09 442 }