Dan Searle / N3310LCD

Library for Nuelectronics Nokia 3310/5110 LCD Display and joystick.

Dependents:   LEDFun NetTester

Fork of N3310LCD by Andrew Lindsay

Library for Nuelectronics Nokia 3310/5110 LCD Display and joystick.

N3310LCD.cpp@1:51961974fe55, 2013-03-10 (annotated)

Committer:
SomeRandomBloke
Date:
Sun Mar 10 18:29:09 2013 +0000
Revision:
1:51961974fe55
Parent:
0:7efa6655d94b
Child:
3:9808f63fd2fe
reformatted code

Who changed what in which revision?

UserRevisionLine numberNew contents of line
SomeRandomBloke 0:7efa6655d94b 1 /*
SomeRandomBloke 0:7efa6655d94b 2 * N3310LCD. A program to interface mbed with the nuelectronics
SomeRandomBloke 0:7efa6655d94b 3 * Nokia 3310 LCD shield from www.nuelectronics.com. Ported from
SomeRandomBloke 0:7efa6655d94b 4 * the nuelectronics Arduino code.
SomeRandomBloke 0:7efa6655d94b 5 *
SomeRandomBloke 0:7efa6655d94b 6 * Copyright (C) <2009> Petras Saduikis <petras@petras.co.uk>
SomeRandomBloke 0:7efa6655d94b 7 *
SomeRandomBloke 0:7efa6655d94b 8 * Converted to a mbed library by Andrew D. Lindsay
SomeRandomBloke 0:7efa6655d94b 9 *
SomeRandomBloke 0:7efa6655d94b 10 * This file is part of N3310LCD.
SomeRandomBloke 0:7efa6655d94b 11 *
SomeRandomBloke 0:7efa6655d94b 12 * N3310LCD is free software: you can redistribute it and/or modify
SomeRandomBloke 0:7efa6655d94b 13 * it under the terms of the GNU General Public License as published by
SomeRandomBloke 0:7efa6655d94b 14 * the Free Software Foundation, either version 3 of the License, or
SomeRandomBloke 0:7efa6655d94b 15 * (at your option) any later version.
SomeRandomBloke 1:51961974fe55 16 *
SomeRandomBloke 0:7efa6655d94b 17 * N3310LCD is distributed in the hope that it will be useful,
SomeRandomBloke 0:7efa6655d94b 18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
SomeRandomBloke 0:7efa6655d94b 19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
SomeRandomBloke 0:7efa6655d94b 20 * GNU General Public License for more details.
SomeRandomBloke 0:7efa6655d94b 21 *
SomeRandomBloke 0:7efa6655d94b 22 * You should have received a copy of the GNU General Public License
SomeRandomBloke 0:7efa6655d94b 23 * along with N3310LCD. If not, see <http://www.gnu.org/licenses/>.
SomeRandomBloke 0:7efa6655d94b 24 */
SomeRandomBloke 0:7efa6655d94b 25
SomeRandomBloke 0:7efa6655d94b 26 #include "N3310LCD.h"
SomeRandomBloke 0:7efa6655d94b 27 #include "N3310Fonts.h"
SomeRandomBloke 0:7efa6655d94b 28
SomeRandomBloke 0:7efa6655d94b 29 static unsigned char lcd_buffer[LCDROWMAX][LCDCOLMAX];
SomeRandomBloke 0:7efa6655d94b 30
SomeRandomBloke 1:51961974fe55 31 N3310LCD::N3310LCD (PinName mosi, PinName miso, PinName sck,
SomeRandomBloke 1:51961974fe55 32 PinName ce, PinName dat_cmd, PinName lcd_rst, PinName bl_on) :
SomeRandomBloke 1:51961974fe55 33 lcdPort(mosi, miso, sck),
SomeRandomBloke 1:51961974fe55 34 ceWire(ce), dcWire(dat_cmd), rstWire(lcd_rst), blWire(bl_on)
SomeRandomBloke 0:7efa6655d94b 35 {
SomeRandomBloke 0:7efa6655d94b 36 }
SomeRandomBloke 0:7efa6655d94b 37
SomeRandomBloke 0:7efa6655d94b 38 void N3310LCD::init()
SomeRandomBloke 0:7efa6655d94b 39 {
SomeRandomBloke 0:7efa6655d94b 40 // use default SPI format
SomeRandomBloke 0:7efa6655d94b 41 lcdPort.format(8,0);
SomeRandomBloke 0:7efa6655d94b 42 lcdPort.frequency(1000000);
SomeRandomBloke 1:51961974fe55 43
SomeRandomBloke 0:7efa6655d94b 44 // lcd reset
SomeRandomBloke 0:7efa6655d94b 45 wait_ms(1);
SomeRandomBloke 0:7efa6655d94b 46 rstWire = 0;
SomeRandomBloke 0:7efa6655d94b 47 wait_ms(1);
SomeRandomBloke 0:7efa6655d94b 48 rstWire = 1;
SomeRandomBloke 1:51961974fe55 49
SomeRandomBloke 1:51961974fe55 50 write(0x21, CMD);
SomeRandomBloke 1:51961974fe55 51 write(0xc8, CMD);
SomeRandomBloke 1:51961974fe55 52 write(0x06, CMD);
SomeRandomBloke 1:51961974fe55 53 write(0x13, CMD);
SomeRandomBloke 1:51961974fe55 54 write(0x20, CMD);
SomeRandomBloke 1:51961974fe55 55 cls();
SomeRandomBloke 0:7efa6655d94b 56 write(0x0c, CMD);
SomeRandomBloke 0:7efa6655d94b 57 }
SomeRandomBloke 0:7efa6655d94b 58
SomeRandomBloke 0:7efa6655d94b 59 void N3310LCD::cls()
SomeRandomBloke 0:7efa6655d94b 60 {
SomeRandomBloke 1:51961974fe55 61 write(0x0c, CMD);
SomeRandomBloke 1:51961974fe55 62 write(0x80, CMD);
SomeRandomBloke 0:7efa6655d94b 63
SomeRandomBloke 1:51961974fe55 64 for (int i = 0; i < 504; i++) {
SomeRandomBloke 0:7efa6655d94b 65 write(0, DATA);
SomeRandomBloke 0:7efa6655d94b 66 }
SomeRandomBloke 0:7efa6655d94b 67 }
SomeRandomBloke 0:7efa6655d94b 68
SomeRandomBloke 0:7efa6655d94b 69 void N3310LCD::backlight(eBacklight state)
SomeRandomBloke 0:7efa6655d94b 70 {
SomeRandomBloke 0:7efa6655d94b 71 // switch off/on back light
SomeRandomBloke 0:7efa6655d94b 72 blWire = state;
SomeRandomBloke 0:7efa6655d94b 73 }
SomeRandomBloke 0:7efa6655d94b 74
SomeRandomBloke 0:7efa6655d94b 75 void N3310LCD::write(BYTE data, eRequestType req_type)
SomeRandomBloke 0:7efa6655d94b 76 {
SomeRandomBloke 0:7efa6655d94b 77 // bring CS low for write
SomeRandomBloke 0:7efa6655d94b 78 ceWire = 0;
SomeRandomBloke 1:51961974fe55 79
SomeRandomBloke 0:7efa6655d94b 80 if (CMD == req_type)
SomeRandomBloke 0:7efa6655d94b 81 dcWire = 0;
SomeRandomBloke 0:7efa6655d94b 82 else // DATA
SomeRandomBloke 0:7efa6655d94b 83 dcWire = 1;
SomeRandomBloke 1:51961974fe55 84
SomeRandomBloke 0:7efa6655d94b 85 lcdPort.write(data);
SomeRandomBloke 1:51961974fe55 86
SomeRandomBloke 0:7efa6655d94b 87 // write finished
SomeRandomBloke 0:7efa6655d94b 88 ceWire = 1;
SomeRandomBloke 0:7efa6655d94b 89 }
SomeRandomBloke 0:7efa6655d94b 90
SomeRandomBloke 0:7efa6655d94b 91 void N3310LCD::locate(BYTE xPos, BYTE yPos)
SomeRandomBloke 0:7efa6655d94b 92 {
SomeRandomBloke 0:7efa6655d94b 93 write(0x40 | yPos, CMD); // column
SomeRandomBloke 1:51961974fe55 94 write(0x80 | xPos, CMD); // row
SomeRandomBloke 0:7efa6655d94b 95 }
SomeRandomBloke 0:7efa6655d94b 96
SomeRandomBloke 0:7efa6655d94b 97 void N3310LCD::drawBitmap(BYTE xPos, BYTE yPos, BYTE* bitmap, BYTE bmpXSize, BYTE bmpYSize)
SomeRandomBloke 0:7efa6655d94b 98 {
SomeRandomBloke 0:7efa6655d94b 99 BYTE row;
SomeRandomBloke 1:51961974fe55 100
SomeRandomBloke 0:7efa6655d94b 101 if (0 == bmpYSize % 8)
SomeRandomBloke 1:51961974fe55 102 row = bmpYSize/8;
SomeRandomBloke 0:7efa6655d94b 103 else
SomeRandomBloke 0:7efa6655d94b 104 row = bmpYSize/8 + 1;
SomeRandomBloke 1:51961974fe55 105
SomeRandomBloke 1:51961974fe55 106 for (BYTE n = 0; n < row; n++) {
SomeRandomBloke 0:7efa6655d94b 107 locate(xPos, yPos);
SomeRandomBloke 1:51961974fe55 108 for(BYTE i = 0; i < bmpXSize; i++) {
SomeRandomBloke 0:7efa6655d94b 109 write(bitmap[i + (n * bmpXSize)], DATA);
SomeRandomBloke 0:7efa6655d94b 110 }
SomeRandomBloke 1:51961974fe55 111 yPos++;
SomeRandomBloke 0:7efa6655d94b 112 }
SomeRandomBloke 0:7efa6655d94b 113 }
SomeRandomBloke 0:7efa6655d94b 114
SomeRandomBloke 0:7efa6655d94b 115 /*
SomeRandomBloke 1:51961974fe55 116 * Name : clearBitmap
SomeRandomBloke 0:7efa6655d94b 117 * Description : Clear an area of the screen, usually to blank out a
SomeRandomBloke 0:7efa6655d94b 118 * previously drawn image or part of image.
SomeRandomBloke 0:7efa6655d94b 119 * Argument(s) : x, y - Position on screen, x 0-83, y 1-6
SomeRandomBloke 0:7efa6655d94b 120 * size_x,size_y - Size of the image in pixels,
SomeRandomBloke 0:7efa6655d94b 121 * size_y is multiple of 8
SomeRandomBloke 1:51961974fe55 122 * Return value : none
SomeRandomBloke 0:7efa6655d94b 123 */
SomeRandomBloke 0:7efa6655d94b 124 void N3310LCD::clearBitmap( unsigned char x,unsigned char y,
SomeRandomBloke 1:51961974fe55 125 unsigned char size_x,unsigned char size_y)
SomeRandomBloke 1:51961974fe55 126 {
SomeRandomBloke 0:7efa6655d94b 127 unsigned int i,n;
SomeRandomBloke 0:7efa6655d94b 128 unsigned char row;
SomeRandomBloke 1:51961974fe55 129
SomeRandomBloke 0:7efa6655d94b 130 row = (size_y % 8 == 0 ) ? size_y / 8 : size_y / 8 + 1;
SomeRandomBloke 0:7efa6655d94b 131 // if (size_y % 8==0)
SomeRandomBloke 1:51961974fe55 132 // row=size_y/8;
SomeRandomBloke 0:7efa6655d94b 133 // else
SomeRandomBloke 0:7efa6655d94b 134 // row=size_y/8+1;
SomeRandomBloke 1:51961974fe55 135
SomeRandomBloke 1:51961974fe55 136 for (n=0; n<row; n++) {
SomeRandomBloke 0:7efa6655d94b 137 locate(x,y);
SomeRandomBloke 0:7efa6655d94b 138 for(i=0; i<size_x; i++) {
SomeRandomBloke 0:7efa6655d94b 139 write( 0x00, DATA );
SomeRandomBloke 0:7efa6655d94b 140 }
SomeRandomBloke 1:51961974fe55 141 y++;
SomeRandomBloke 1:51961974fe55 142 }
SomeRandomBloke 0:7efa6655d94b 143 }
SomeRandomBloke 0:7efa6655d94b 144
SomeRandomBloke 0:7efa6655d94b 145 void N3310LCD::writeString(BYTE xPos, BYTE yPos, char* string, eDisplayMode mode)
SomeRandomBloke 0:7efa6655d94b 146 {
SomeRandomBloke 0:7efa6655d94b 147 locate(xPos, yPos);
SomeRandomBloke 1:51961974fe55 148
SomeRandomBloke 1:51961974fe55 149 while (*string) {
SomeRandomBloke 0:7efa6655d94b 150 writeChar(*string++, mode);
SomeRandomBloke 0:7efa6655d94b 151 }
SomeRandomBloke 0:7efa6655d94b 152 }
SomeRandomBloke 1:51961974fe55 153
SomeRandomBloke 0:7efa6655d94b 154 void N3310LCD::writeStringBig(BYTE xPos, BYTE yPos, char* string, eDisplayMode mode)
SomeRandomBloke 0:7efa6655d94b 155 {
SomeRandomBloke 1:51961974fe55 156 while (*string) {
SomeRandomBloke 0:7efa6655d94b 157 writeCharBig(xPos, yPos, *string , mode);
SomeRandomBloke 1:51961974fe55 158
SomeRandomBloke 0:7efa6655d94b 159 if('.' == *string++)
SomeRandomBloke 0:7efa6655d94b 160 xPos += 5;
SomeRandomBloke 0:7efa6655d94b 161 else
SomeRandomBloke 0:7efa6655d94b 162 xPos += 12;
SomeRandomBloke 0:7efa6655d94b 163 }
SomeRandomBloke 0:7efa6655d94b 164 }
SomeRandomBloke 0:7efa6655d94b 165
SomeRandomBloke 0:7efa6655d94b 166 void N3310LCD::writeChar(BYTE ch, eDisplayMode mode)
SomeRandomBloke 0:7efa6655d94b 167 {
SomeRandomBloke 0:7efa6655d94b 168 BYTE sendByte;
SomeRandomBloke 1:51961974fe55 169
SomeRandomBloke 0:7efa6655d94b 170 unsigned char* pFont = (unsigned char*)font6_8;
SomeRandomBloke 0:7efa6655d94b 171 ch -= 32;
SomeRandomBloke 0:7efa6655d94b 172
SomeRandomBloke 1:51961974fe55 173 for (BYTE line = 0; line < 6; line++) {
SomeRandomBloke 0:7efa6655d94b 174 sendByte = *(pFont + ch*6 + line);
SomeRandomBloke 0:7efa6655d94b 175 write((mode == NORMAL)? sendByte: (sendByte ^ 0xff) , DATA);
SomeRandomBloke 0:7efa6655d94b 176 }
SomeRandomBloke 0:7efa6655d94b 177 }
SomeRandomBloke 0:7efa6655d94b 178
SomeRandomBloke 0:7efa6655d94b 179 void N3310LCD::writeCharBig(BYTE xPos, BYTE yPos, BYTE ch, eDisplayMode mode)
SomeRandomBloke 0:7efa6655d94b 180 {
SomeRandomBloke 0:7efa6655d94b 181 BYTE sendByte;
SomeRandomBloke 1:51961974fe55 182
SomeRandomBloke 0:7efa6655d94b 183 unsigned char* pFont = (unsigned char *) big_number;
SomeRandomBloke 1:51961974fe55 184
SomeRandomBloke 0:7efa6655d94b 185 if('.' == ch)
SomeRandomBloke 0:7efa6655d94b 186 ch = 10;
SomeRandomBloke 0:7efa6655d94b 187 else if ('+' == ch)
SomeRandomBloke 0:7efa6655d94b 188 ch = 11;
SomeRandomBloke 0:7efa6655d94b 189 else if ('-' == ch)
SomeRandomBloke 0:7efa6655d94b 190 ch = 12;
SomeRandomBloke 0:7efa6655d94b 191 else
SomeRandomBloke 0:7efa6655d94b 192 ch = ch & 0x0f;
SomeRandomBloke 1:51961974fe55 193
SomeRandomBloke 1:51961974fe55 194 for(BYTE i = 0; i < 3; i++) {
SomeRandomBloke 0:7efa6655d94b 195 locate(xPos, yPos + i);
SomeRandomBloke 1:51961974fe55 196
SomeRandomBloke 1:51961974fe55 197 for(BYTE j = 0; j < 16; j++) {
SomeRandomBloke 0:7efa6655d94b 198 sendByte = *(pFont + ch*48 + i*16 + j);
SomeRandomBloke 0:7efa6655d94b 199 write((mode == NORMAL)? sendByte : (sendByte^0xff), DATA);
SomeRandomBloke 0:7efa6655d94b 200 }
SomeRandomBloke 0:7efa6655d94b 201 }
SomeRandomBloke 0:7efa6655d94b 202 }
SomeRandomBloke 0:7efa6655d94b 203
SomeRandomBloke 0:7efa6655d94b 204 /*
SomeRandomBloke 0:7efa6655d94b 205 * Name : setPixel
SomeRandomBloke 0:7efa6655d94b 206 * Description : Set a single pixel either on or off, update display buffer.
SomeRandomBloke 0:7efa6655d94b 207 * Argument(s) : x,y - position, x = 0-83, y = 0-6
SomeRandomBloke 0:7efa6655d94b 208 * c - colour, either PIXEL_ON, PIXEL_OFF or PIXEL_XOR
SomeRandomBloke 0:7efa6655d94b 209 * Return value : none
SomeRandomBloke 0:7efa6655d94b 210 */
SomeRandomBloke 1:51961974fe55 211 void N3310LCD::setPixel( unsigned char x, unsigned char y, unsigned char c )
SomeRandomBloke 1:51961974fe55 212 {
SomeRandomBloke 1:51961974fe55 213 unsigned char value;
SomeRandomBloke 1:51961974fe55 214 unsigned char row;
SomeRandomBloke 1:51961974fe55 215
SomeRandomBloke 0:7efa6655d94b 216 // if( x < 0 || x >= LCDCOLMAX || y < 0 || y >= LCDPIXELROWMAX ) return;
SomeRandomBloke 0:7efa6655d94b 217 if( x >= LCDCOLMAX || y >= LCDPIXELROWMAX ) return;
SomeRandomBloke 0:7efa6655d94b 218
SomeRandomBloke 0:7efa6655d94b 219 row = y / 8;
SomeRandomBloke 0:7efa6655d94b 220
SomeRandomBloke 0:7efa6655d94b 221 value = lcd_buffer[row][x];
SomeRandomBloke 0:7efa6655d94b 222 if( c == PIXEL_ON ) {
SomeRandomBloke 0:7efa6655d94b 223 value |= (1 << (y % 8));
SomeRandomBloke 0:7efa6655d94b 224 } else if( c == PIXEL_XOR ) {
SomeRandomBloke 0:7efa6655d94b 225 value ^= (1 << (y % 8));
SomeRandomBloke 0:7efa6655d94b 226 } else {
SomeRandomBloke 0:7efa6655d94b 227 value &= ~(1 << (y % 8));
SomeRandomBloke 0:7efa6655d94b 228 }
SomeRandomBloke 0:7efa6655d94b 229
SomeRandomBloke 0:7efa6655d94b 230 lcd_buffer[row][x] = value;
SomeRandomBloke 0:7efa6655d94b 231
SomeRandomBloke 0:7efa6655d94b 232 locate (x,row);
SomeRandomBloke 0:7efa6655d94b 233 write(value, DATA);
SomeRandomBloke 0:7efa6655d94b 234 }
SomeRandomBloke 0:7efa6655d94b 235
SomeRandomBloke 0:7efa6655d94b 236
SomeRandomBloke 0:7efa6655d94b 237 /*
SomeRandomBloke 0:7efa6655d94b 238 * Name : drawLine
SomeRandomBloke 0:7efa6655d94b 239 * Description : Draws a line between two points on the display.
SomeRandomBloke 0:7efa6655d94b 240 * Argument(s) : x1, y1 - Absolute pixel coordinates for line origin.
SomeRandomBloke 0:7efa6655d94b 241 * x2, y2 - Absolute pixel coordinates for line end.
SomeRandomBloke 0:7efa6655d94b 242 * c - either PIXEL_ON, PIXEL_OFF or PIXEL_XOR
SomeRandomBloke 0:7efa6655d94b 243 * Return value : none
SomeRandomBloke 0:7efa6655d94b 244 */
SomeRandomBloke 0:7efa6655d94b 245 void N3310LCD::drawLine(unsigned char x1, unsigned char y1,
SomeRandomBloke 1:51961974fe55 246 unsigned char x2, unsigned char y2, unsigned char c)
SomeRandomBloke 1:51961974fe55 247 {
SomeRandomBloke 0:7efa6655d94b 248 int dx, dy, stepx, stepy, fraction;
SomeRandomBloke 0:7efa6655d94b 249
SomeRandomBloke 0:7efa6655d94b 250 /* Calculate differential form */
SomeRandomBloke 0:7efa6655d94b 251 /* dy y2 - y1 */
SomeRandomBloke 0:7efa6655d94b 252 /* -- = ------- */
SomeRandomBloke 0:7efa6655d94b 253 /* dx x2 - x1 */
SomeRandomBloke 0:7efa6655d94b 254
SomeRandomBloke 0:7efa6655d94b 255 /* Take differences */
SomeRandomBloke 0:7efa6655d94b 256 dy = y2 - y1;
SomeRandomBloke 0:7efa6655d94b 257 dx = x2 - x1;
SomeRandomBloke 0:7efa6655d94b 258
SomeRandomBloke 0:7efa6655d94b 259 /* dy is negative */
SomeRandomBloke 0:7efa6655d94b 260 if ( dy < 0 ) {
SomeRandomBloke 0:7efa6655d94b 261 dy = -dy;
SomeRandomBloke 0:7efa6655d94b 262 stepy = -1;
SomeRandomBloke 0:7efa6655d94b 263 } else {
SomeRandomBloke 0:7efa6655d94b 264 stepy = 1;
SomeRandomBloke 0:7efa6655d94b 265 }
SomeRandomBloke 0:7efa6655d94b 266
SomeRandomBloke 0:7efa6655d94b 267 /* dx is negative */
SomeRandomBloke 0:7efa6655d94b 268 if ( dx < 0 ) {
SomeRandomBloke 0:7efa6655d94b 269 dx = -dx;
SomeRandomBloke 0:7efa6655d94b 270 stepx = -1;
SomeRandomBloke 0:7efa6655d94b 271 } else {
SomeRandomBloke 0:7efa6655d94b 272 stepx = 1;
SomeRandomBloke 0:7efa6655d94b 273 }
SomeRandomBloke 0:7efa6655d94b 274
SomeRandomBloke 0:7efa6655d94b 275 dx <<= 1;
SomeRandomBloke 0:7efa6655d94b 276 dy <<= 1;
SomeRandomBloke 0:7efa6655d94b 277
SomeRandomBloke 0:7efa6655d94b 278 /* Draw initial position */
SomeRandomBloke 0:7efa6655d94b 279 setPixel( x1, y1, c );
SomeRandomBloke 0:7efa6655d94b 280
SomeRandomBloke 0:7efa6655d94b 281 /* Draw next positions until end */
SomeRandomBloke 0:7efa6655d94b 282 if ( dx > dy ) {
SomeRandomBloke 0:7efa6655d94b 283 /* Take fraction */
SomeRandomBloke 0:7efa6655d94b 284 fraction = dy - ( dx >> 1);
SomeRandomBloke 0:7efa6655d94b 285 while ( x1 != x2 ) {
SomeRandomBloke 0:7efa6655d94b 286 if ( fraction >= 0 ) {
SomeRandomBloke 0:7efa6655d94b 287 y1 += stepy;
SomeRandomBloke 0:7efa6655d94b 288 fraction -= dx;
SomeRandomBloke 0:7efa6655d94b 289 }
SomeRandomBloke 0:7efa6655d94b 290 x1 += stepx;
SomeRandomBloke 0:7efa6655d94b 291 fraction += dy;
SomeRandomBloke 0:7efa6655d94b 292
SomeRandomBloke 0:7efa6655d94b 293 /* Draw calculated point */
SomeRandomBloke 0:7efa6655d94b 294 setPixel( x1, y1, c );
SomeRandomBloke 0:7efa6655d94b 295 }
SomeRandomBloke 0:7efa6655d94b 296 } else {
SomeRandomBloke 0:7efa6655d94b 297 /* Take fraction */
SomeRandomBloke 0:7efa6655d94b 298 fraction = dx - ( dy >> 1);
SomeRandomBloke 0:7efa6655d94b 299 while ( y1 != y2 ) {
SomeRandomBloke 0:7efa6655d94b 300 if ( fraction >= 0 ) {
SomeRandomBloke 0:7efa6655d94b 301 x1 += stepx;
SomeRandomBloke 0:7efa6655d94b 302 fraction -= dy;
SomeRandomBloke 0:7efa6655d94b 303 }
SomeRandomBloke 0:7efa6655d94b 304 y1 += stepy;
SomeRandomBloke 0:7efa6655d94b 305 fraction += dx;
SomeRandomBloke 0:7efa6655d94b 306
SomeRandomBloke 0:7efa6655d94b 307 /* Draw calculated point */
SomeRandomBloke 0:7efa6655d94b 308 setPixel( x1, y1, c );
SomeRandomBloke 0:7efa6655d94b 309 }
SomeRandomBloke 0:7efa6655d94b 310 }
SomeRandomBloke 0:7efa6655d94b 311 }
SomeRandomBloke 0:7efa6655d94b 312
SomeRandomBloke 0:7efa6655d94b 313
SomeRandomBloke 0:7efa6655d94b 314 /*
SomeRandomBloke 0:7efa6655d94b 315 * Name : drawRectangle
SomeRandomBloke 0:7efa6655d94b 316 * Description : Draw a rectangle given to top left and bottom right points
SomeRandomBloke 0:7efa6655d94b 317 * Argument(s) : x1, y1 - Absolute pixel coordinates for top left corner
SomeRandomBloke 0:7efa6655d94b 318 * x2, y2 - Absolute pixel coordinates for bottom right corner
SomeRandomBloke 0:7efa6655d94b 319 * c - either PIXEL_ON, PIXEL_OFF or PIXEL_XOR
SomeRandomBloke 0:7efa6655d94b 320 * Return value : none
SomeRandomBloke 0:7efa6655d94b 321 */
SomeRandomBloke 0:7efa6655d94b 322 void N3310LCD::drawRectangle(unsigned char x1, unsigned char y1,
SomeRandomBloke 1:51961974fe55 323 unsigned char x2, unsigned char y2, unsigned char c)
SomeRandomBloke 1:51961974fe55 324 {
SomeRandomBloke 0:7efa6655d94b 325 drawLine( x1, y1, x2, y1, c );
SomeRandomBloke 0:7efa6655d94b 326 drawLine( x1, y1, x1, y2, c );
SomeRandomBloke 0:7efa6655d94b 327 drawLine( x1, y2, x2, y2, c );
SomeRandomBloke 0:7efa6655d94b 328 drawLine( x2, y1, x2, y2, c );
SomeRandomBloke 0:7efa6655d94b 329 }
SomeRandomBloke 0:7efa6655d94b 330
SomeRandomBloke 0:7efa6655d94b 331
SomeRandomBloke 0:7efa6655d94b 332 /*
SomeRandomBloke 0:7efa6655d94b 333 * Name : drawFilledRectangle
SomeRandomBloke 0:7efa6655d94b 334 * Description : Draw a filled rectangle given to top left and bottom right points
SomeRandomBloke 0:7efa6655d94b 335 * just simply draws horizontal lines where the rectangle would be
SomeRandomBloke 0:7efa6655d94b 336 * Argument(s) : x1, y1 - Absolute pixel coordinates for top left corner
SomeRandomBloke 0:7efa6655d94b 337 * x2, y2 - Absolute pixel coordinates for bottom right corner
SomeRandomBloke 0:7efa6655d94b 338 * c - either PIXEL_ON, PIXEL_OFF or PIXEL_XOR
SomeRandomBloke 0:7efa6655d94b 339 * Return value : none
SomeRandomBloke 0:7efa6655d94b 340 */
SomeRandomBloke 0:7efa6655d94b 341 void N3310LCD::drawFilledRectangle(unsigned char x1, unsigned char y1,
SomeRandomBloke 1:51961974fe55 342 unsigned char x2, unsigned char y2, unsigned char c)
SomeRandomBloke 1:51961974fe55 343 {
SomeRandomBloke 0:7efa6655d94b 344 for(int i=y1; i <= y2; i++ ) {
SomeRandomBloke 0:7efa6655d94b 345 drawLine( x1, i, x2, i, c );
SomeRandomBloke 0:7efa6655d94b 346 }
SomeRandomBloke 0:7efa6655d94b 347 }
SomeRandomBloke 0:7efa6655d94b 348
SomeRandomBloke 0:7efa6655d94b 349
SomeRandomBloke 0:7efa6655d94b 350 /*
SomeRandomBloke 0:7efa6655d94b 351 * Name : drawCircle
SomeRandomBloke 1:51961974fe55 352 * Description : Draw a circle using Bresenham's algorithm.
SomeRandomBloke 0:7efa6655d94b 353 * Some small circles will look like squares!!
SomeRandomBloke 0:7efa6655d94b 354 * Argument(s) : xc, yc - Centre of circle
SomeRandomBloke 0:7efa6655d94b 355 * r - Radius
SomeRandomBloke 0:7efa6655d94b 356 * c - either PIXEL_ON, PIXEL_OFF or PIXEL_XOR
SomeRandomBloke 1:51961974fe55 357 * Return value : None
SomeRandomBloke 0:7efa6655d94b 358 */
SomeRandomBloke 0:7efa6655d94b 359 void N3310LCD::drawCircle(unsigned char xc, unsigned char yc,
SomeRandomBloke 1:51961974fe55 360 unsigned char r, unsigned char c)
SomeRandomBloke 1:51961974fe55 361 {
SomeRandomBloke 0:7efa6655d94b 362 int x=0;
SomeRandomBloke 0:7efa6655d94b 363 int y=r;
SomeRandomBloke 0:7efa6655d94b 364 int p=3-(2*r);
SomeRandomBloke 0:7efa6655d94b 365
SomeRandomBloke 1:51961974fe55 366 setPixel( (uint8_t)(xc+x),(uint8_t)(yc-y), c);
SomeRandomBloke 0:7efa6655d94b 367
SomeRandomBloke 1:51961974fe55 368 for(x=0; x<=y; x++) {
SomeRandomBloke 0:7efa6655d94b 369 if (p<0) {
SomeRandomBloke 0:7efa6655d94b 370 y=y;
SomeRandomBloke 0:7efa6655d94b 371 p=(p+(4*x)+6);
SomeRandomBloke 0:7efa6655d94b 372 } else {
SomeRandomBloke 0:7efa6655d94b 373 y=y-1;
SomeRandomBloke 0:7efa6655d94b 374 p=p+((4*(x-y)+10));
SomeRandomBloke 0:7efa6655d94b 375 }
SomeRandomBloke 0:7efa6655d94b 376
SomeRandomBloke 0:7efa6655d94b 377 setPixel((uint8_t)(xc+x),(uint8_t)(yc-y), c);
SomeRandomBloke 0:7efa6655d94b 378 setPixel((uint8_t)(xc-x),(uint8_t)(yc-y), c);
SomeRandomBloke 0:7efa6655d94b 379 setPixel((uint8_t)(xc+x),(uint8_t)(yc+y), c);
SomeRandomBloke 0:7efa6655d94b 380 setPixel((uint8_t)(xc-x),(uint8_t)(yc+y), c);
SomeRandomBloke 0:7efa6655d94b 381 setPixel((uint8_t)(xc+y),(uint8_t)(yc-x), c);
SomeRandomBloke 0:7efa6655d94b 382 setPixel((uint8_t)(xc-y),(uint8_t)(yc-x), c);
SomeRandomBloke 0:7efa6655d94b 383 setPixel((uint8_t)(xc+y),(uint8_t)(yc+x), c);
SomeRandomBloke 0:7efa6655d94b 384 setPixel((uint8_t)(xc-y),(uint8_t)(yc+x), c);
SomeRandomBloke 0:7efa6655d94b 385 }
SomeRandomBloke 0:7efa6655d94b 386 }