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@3:9808f63fd2fe, 2013-03-24 (annotated)

Committer:
SomeRandomBloke
Date:
Sun Mar 24 15:15:08 2013 +0000
Revision:
3:9808f63fd2fe
Parent:
1:51961974fe55
Child:
4:90dce6032a37
updated for multiple fonts

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 3:9808f63fd2fe 30 // current cursor postition
SomeRandomBloke 3:9808f63fd2fe 31 static unsigned char cursor_row = 0; /* 0-5 */
SomeRandomBloke 3:9808f63fd2fe 32 static unsigned char cursor_col = 0; /* 0-83 */
SomeRandomBloke 3:9808f63fd2fe 33 unsigned char *fontStart; // Start of font data
SomeRandomBloke 3:9808f63fd2fe 34 int8_t fontWidth; // Font width
SomeRandomBloke 3:9808f63fd2fe 35 int8_t fontHeight; // Font height
SomeRandomBloke 0:7efa6655d94b 36
SomeRandomBloke 1:51961974fe55 37 N3310LCD::N3310LCD (PinName mosi, PinName miso, PinName sck,
SomeRandomBloke 1:51961974fe55 38 PinName ce, PinName dat_cmd, PinName lcd_rst, PinName bl_on) :
SomeRandomBloke 1:51961974fe55 39 lcdPort(mosi, miso, sck),
SomeRandomBloke 1:51961974fe55 40 ceWire(ce), dcWire(dat_cmd), rstWire(lcd_rst), blWire(bl_on)
SomeRandomBloke 0:7efa6655d94b 41 {
SomeRandomBloke 0:7efa6655d94b 42 }
SomeRandomBloke 0:7efa6655d94b 43
SomeRandomBloke 0:7efa6655d94b 44 void N3310LCD::init()
SomeRandomBloke 0:7efa6655d94b 45 {
SomeRandomBloke 0:7efa6655d94b 46 // use default SPI format
SomeRandomBloke 0:7efa6655d94b 47 lcdPort.format(8,0);
SomeRandomBloke 3:9808f63fd2fe 48 lcdPort.frequency(2000000);
SomeRandomBloke 1:51961974fe55 49
SomeRandomBloke 0:7efa6655d94b 50 // lcd reset
SomeRandomBloke 0:7efa6655d94b 51 wait_ms(1);
SomeRandomBloke 0:7efa6655d94b 52 rstWire = 0;
SomeRandomBloke 0:7efa6655d94b 53 wait_ms(1);
SomeRandomBloke 0:7efa6655d94b 54 rstWire = 1;
SomeRandomBloke 1:51961974fe55 55
SomeRandomBloke 3:9808f63fd2fe 56 writeCommand(0x21); // LCD Extended Commands
SomeRandomBloke 3:9808f63fd2fe 57 writeCommand(0xC0); // Set LCD Vop (Contrast)
SomeRandomBloke 3:9808f63fd2fe 58 writeCommand(0x06); // Set temp coefficient
SomeRandomBloke 3:9808f63fd2fe 59 writeCommand(0x13); // LCD bias mode1:48
SomeRandomBloke 3:9808f63fd2fe 60 writeCommand(0x20); // LCD Standard Commands, Horizontal addressing mode
SomeRandomBloke 3:9808f63fd2fe 61 writeCommand(0x0c); // LCD in normal mode
SomeRandomBloke 1:51961974fe55 62 cls();
SomeRandomBloke 3:9808f63fd2fe 63 setFont( FONT_5x7 );
SomeRandomBloke 3:9808f63fd2fe 64 // setFont( FONT_6x8 );
SomeRandomBloke 3:9808f63fd2fe 65
SomeRandomBloke 3:9808f63fd2fe 66 }
SomeRandomBloke 3:9808f63fd2fe 67
SomeRandomBloke 3:9808f63fd2fe 68 void N3310LCD::setFont(BYTE font )
SomeRandomBloke 3:9808f63fd2fe 69 {
SomeRandomBloke 3:9808f63fd2fe 70
SomeRandomBloke 3:9808f63fd2fe 71 switch( font ) {
SomeRandomBloke 3:9808f63fd2fe 72 case FONT_6x8:
SomeRandomBloke 3:9808f63fd2fe 73 fontWidth = 6;
SomeRandomBloke 3:9808f63fd2fe 74 fontHeight = 8;
SomeRandomBloke 3:9808f63fd2fe 75 fontStart = font6_8;
SomeRandomBloke 3:9808f63fd2fe 76 break;
SomeRandomBloke 3:9808f63fd2fe 77 default:
SomeRandomBloke 3:9808f63fd2fe 78 fontWidth = 5;
SomeRandomBloke 3:9808f63fd2fe 79 fontHeight = 7;
SomeRandomBloke 3:9808f63fd2fe 80 fontStart = font5_7;
SomeRandomBloke 3:9808f63fd2fe 81 break;
SomeRandomBloke 3:9808f63fd2fe 82 }
SomeRandomBloke 3:9808f63fd2fe 83
SomeRandomBloke 0:7efa6655d94b 84 }
SomeRandomBloke 0:7efa6655d94b 85
SomeRandomBloke 0:7efa6655d94b 86 void N3310LCD::cls()
SomeRandomBloke 0:7efa6655d94b 87 {
SomeRandomBloke 3:9808f63fd2fe 88 writeCommand(0x40); // column
SomeRandomBloke 3:9808f63fd2fe 89 writeCommand(0x80); // row
SomeRandomBloke 3:9808f63fd2fe 90 for(int i=0; i< LCDROWMAX; i++) {
SomeRandomBloke 3:9808f63fd2fe 91 for(int j=0; j< LCDCOLMAX; j++) {
SomeRandomBloke 3:9808f63fd2fe 92 writeData( 0x00 );
SomeRandomBloke 3:9808f63fd2fe 93 lcd_buffer[i][j] = 0x00;
SomeRandomBloke 3:9808f63fd2fe 94 }
SomeRandomBloke 0:7efa6655d94b 95 }
SomeRandomBloke 0:7efa6655d94b 96 }
SomeRandomBloke 0:7efa6655d94b 97
SomeRandomBloke 0:7efa6655d94b 98 void N3310LCD::backlight(eBacklight state)
SomeRandomBloke 0:7efa6655d94b 99 {
SomeRandomBloke 0:7efa6655d94b 100 // switch off/on back light
SomeRandomBloke 0:7efa6655d94b 101 blWire = state;
SomeRandomBloke 0:7efa6655d94b 102 }
SomeRandomBloke 0:7efa6655d94b 103
SomeRandomBloke 3:9808f63fd2fe 104 void N3310LCD::writeCommand(BYTE data)
SomeRandomBloke 0:7efa6655d94b 105 {
SomeRandomBloke 0:7efa6655d94b 106 // bring CS low for write
SomeRandomBloke 0:7efa6655d94b 107 ceWire = 0;
SomeRandomBloke 3:9808f63fd2fe 108 dcWire = 0;
SomeRandomBloke 1:51961974fe55 109
SomeRandomBloke 3:9808f63fd2fe 110 lcdPort.write(data);
SomeRandomBloke 3:9808f63fd2fe 111
SomeRandomBloke 3:9808f63fd2fe 112 // write finished
SomeRandomBloke 3:9808f63fd2fe 113 ceWire = 1;
SomeRandomBloke 3:9808f63fd2fe 114 }
SomeRandomBloke 3:9808f63fd2fe 115
SomeRandomBloke 3:9808f63fd2fe 116 void N3310LCD::writeData(BYTE data)
SomeRandomBloke 3:9808f63fd2fe 117 {
SomeRandomBloke 3:9808f63fd2fe 118 // bring CS low for write
SomeRandomBloke 3:9808f63fd2fe 119 ceWire = 0;
SomeRandomBloke 3:9808f63fd2fe 120 dcWire = 1;
SomeRandomBloke 1:51961974fe55 121
SomeRandomBloke 0:7efa6655d94b 122 lcdPort.write(data);
SomeRandomBloke 1:51961974fe55 123
SomeRandomBloke 0:7efa6655d94b 124 // write finished
SomeRandomBloke 0:7efa6655d94b 125 ceWire = 1;
SomeRandomBloke 0:7efa6655d94b 126 }
SomeRandomBloke 0:7efa6655d94b 127
SomeRandomBloke 0:7efa6655d94b 128 void N3310LCD::locate(BYTE xPos, BYTE yPos)
SomeRandomBloke 0:7efa6655d94b 129 {
SomeRandomBloke 3:9808f63fd2fe 130 writeCommand(0x40 | yPos); // column
SomeRandomBloke 3:9808f63fd2fe 131 writeCommand(0x80 | xPos); // row
SomeRandomBloke 3:9808f63fd2fe 132 cursor_row = yPos;
SomeRandomBloke 3:9808f63fd2fe 133 cursor_col = xPos;
SomeRandomBloke 0:7efa6655d94b 134 }
SomeRandomBloke 0:7efa6655d94b 135
SomeRandomBloke 0:7efa6655d94b 136 void N3310LCD::drawBitmap(BYTE xPos, BYTE yPos, BYTE* bitmap, BYTE bmpXSize, BYTE bmpYSize)
SomeRandomBloke 0:7efa6655d94b 137 {
SomeRandomBloke 0:7efa6655d94b 138 BYTE row;
SomeRandomBloke 1:51961974fe55 139
SomeRandomBloke 0:7efa6655d94b 140 if (0 == bmpYSize % 8)
SomeRandomBloke 1:51961974fe55 141 row = bmpYSize/8;
SomeRandomBloke 0:7efa6655d94b 142 else
SomeRandomBloke 0:7efa6655d94b 143 row = bmpYSize/8 + 1;
SomeRandomBloke 1:51961974fe55 144
SomeRandomBloke 1:51961974fe55 145 for (BYTE n = 0; n < row; n++) {
SomeRandomBloke 0:7efa6655d94b 146 locate(xPos, yPos);
SomeRandomBloke 1:51961974fe55 147 for(BYTE i = 0; i < bmpXSize; i++) {
SomeRandomBloke 3:9808f63fd2fe 148 writeData(bitmap[i + (n * bmpXSize)]);
SomeRandomBloke 0:7efa6655d94b 149 }
SomeRandomBloke 1:51961974fe55 150 yPos++;
SomeRandomBloke 0:7efa6655d94b 151 }
SomeRandomBloke 0:7efa6655d94b 152 }
SomeRandomBloke 0:7efa6655d94b 153
SomeRandomBloke 0:7efa6655d94b 154 /*
SomeRandomBloke 1:51961974fe55 155 * Name : clearBitmap
SomeRandomBloke 0:7efa6655d94b 156 * Description : Clear an area of the screen, usually to blank out a
SomeRandomBloke 0:7efa6655d94b 157 * previously drawn image or part of image.
SomeRandomBloke 0:7efa6655d94b 158 * Argument(s) : x, y - Position on screen, x 0-83, y 1-6
SomeRandomBloke 0:7efa6655d94b 159 * size_x,size_y - Size of the image in pixels,
SomeRandomBloke 0:7efa6655d94b 160 * size_y is multiple of 8
SomeRandomBloke 1:51961974fe55 161 * Return value : none
SomeRandomBloke 0:7efa6655d94b 162 */
SomeRandomBloke 0:7efa6655d94b 163 void N3310LCD::clearBitmap( unsigned char x,unsigned char y,
SomeRandomBloke 1:51961974fe55 164 unsigned char size_x,unsigned char size_y)
SomeRandomBloke 1:51961974fe55 165 {
SomeRandomBloke 0:7efa6655d94b 166 unsigned int i,n;
SomeRandomBloke 0:7efa6655d94b 167 unsigned char row;
SomeRandomBloke 1:51961974fe55 168
SomeRandomBloke 0:7efa6655d94b 169 row = (size_y % 8 == 0 ) ? size_y / 8 : size_y / 8 + 1;
SomeRandomBloke 1:51961974fe55 170
SomeRandomBloke 1:51961974fe55 171 for (n=0; n<row; n++) {
SomeRandomBloke 0:7efa6655d94b 172 locate(x,y);
SomeRandomBloke 0:7efa6655d94b 173 for(i=0; i<size_x; i++) {
SomeRandomBloke 3:9808f63fd2fe 174 writeData( 0x00 );
SomeRandomBloke 0:7efa6655d94b 175 }
SomeRandomBloke 1:51961974fe55 176 y++;
SomeRandomBloke 1:51961974fe55 177 }
SomeRandomBloke 0:7efa6655d94b 178 }
SomeRandomBloke 0:7efa6655d94b 179
SomeRandomBloke 0:7efa6655d94b 180 void N3310LCD::writeString(BYTE xPos, BYTE yPos, char* string, eDisplayMode mode)
SomeRandomBloke 0:7efa6655d94b 181 {
SomeRandomBloke 0:7efa6655d94b 182 locate(xPos, yPos);
SomeRandomBloke 1:51961974fe55 183
SomeRandomBloke 1:51961974fe55 184 while (*string) {
SomeRandomBloke 0:7efa6655d94b 185 writeChar(*string++, mode);
SomeRandomBloke 0:7efa6655d94b 186 }
SomeRandomBloke 0:7efa6655d94b 187 }
SomeRandomBloke 1:51961974fe55 188
SomeRandomBloke 0:7efa6655d94b 189 void N3310LCD::writeStringBig(BYTE xPos, BYTE yPos, char* string, eDisplayMode mode)
SomeRandomBloke 0:7efa6655d94b 190 {
SomeRandomBloke 1:51961974fe55 191 while (*string) {
SomeRandomBloke 0:7efa6655d94b 192 writeCharBig(xPos, yPos, *string , mode);
SomeRandomBloke 1:51961974fe55 193
SomeRandomBloke 0:7efa6655d94b 194 if('.' == *string++)
SomeRandomBloke 0:7efa6655d94b 195 xPos += 5;
SomeRandomBloke 0:7efa6655d94b 196 else
SomeRandomBloke 0:7efa6655d94b 197 xPos += 12;
SomeRandomBloke 0:7efa6655d94b 198 }
SomeRandomBloke 0:7efa6655d94b 199 }
SomeRandomBloke 0:7efa6655d94b 200
SomeRandomBloke 0:7efa6655d94b 201 void N3310LCD::writeChar(BYTE ch, eDisplayMode mode)
SomeRandomBloke 0:7efa6655d94b 202 {
SomeRandomBloke 3:9808f63fd2fe 203 // BYTE sendByte;
SomeRandomBloke 1:51961974fe55 204
SomeRandomBloke 3:9808f63fd2fe 205 // unsigned char* pFont = (unsigned char*)font6_8;
SomeRandomBloke 3:9808f63fd2fe 206 // ch -= 32;
SomeRandomBloke 3:9808f63fd2fe 207 /*
SomeRandomBloke 3:9808f63fd2fe 208 for (BYTE line = 0; line < 6; line++) {
SomeRandomBloke 3:9808f63fd2fe 209 sendByte = *(pFont + ch*6 + line);
SomeRandomBloke 3:9808f63fd2fe 210 writeData((mode == NORMAL)? sendByte: (sendByte ^ 0xff));
SomeRandomBloke 3:9808f63fd2fe 211 }
SomeRandomBloke 3:9808f63fd2fe 212 */
SomeRandomBloke 0:7efa6655d94b 213
SomeRandomBloke 3:9808f63fd2fe 214 if (cursor_col > LCDCOLMAX - (fontWidth+1)) cursor_col = LCDCOLMAX - (fontWidth+1); // ensure space is available for the character
SomeRandomBloke 3:9808f63fd2fe 215 if (cursor_row > LCDROWMAX - 1) cursor_row = LCDROWMAX - 1; // ensure space is available for the character
SomeRandomBloke 3:9808f63fd2fe 216 lcd_buffer[cursor_row][cursor_col] = 0x00;
SomeRandomBloke 3:9808f63fd2fe 217 for(int8_t j=0; j< fontHeight; j++) {
SomeRandomBloke 3:9808f63fd2fe 218 lcd_buffer[cursor_row][cursor_col + j] = fontStart[(ch-32)*fontWidth + j];
SomeRandomBloke 0:7efa6655d94b 219 }
SomeRandomBloke 3:9808f63fd2fe 220
SomeRandomBloke 3:9808f63fd2fe 221 lcd_buffer[cursor_row][cursor_col + fontWidth] = 0x00;
SomeRandomBloke 3:9808f63fd2fe 222
SomeRandomBloke 3:9808f63fd2fe 223 for(int8_t j=0; j< (fontWidth+1); j++) {
SomeRandomBloke 3:9808f63fd2fe 224 if( mode == NORMAL )
SomeRandomBloke 3:9808f63fd2fe 225 writeData(lcd_buffer[cursor_row][cursor_col++]);
SomeRandomBloke 3:9808f63fd2fe 226 else
SomeRandomBloke 3:9808f63fd2fe 227 writeData(lcd_buffer[cursor_row][cursor_col++] ^ 0xff);
SomeRandomBloke 3:9808f63fd2fe 228 if (cursor_col >= LCDCOLMAX) {
SomeRandomBloke 3:9808f63fd2fe 229 cursor_col=0;
SomeRandomBloke 3:9808f63fd2fe 230 cursor_row++;
SomeRandomBloke 3:9808f63fd2fe 231 if (cursor_row >= LCDROWMAX) cursor_row=0;
SomeRandomBloke 3:9808f63fd2fe 232 }
SomeRandomBloke 3:9808f63fd2fe 233 }
SomeRandomBloke 3:9808f63fd2fe 234
SomeRandomBloke 3:9808f63fd2fe 235
SomeRandomBloke 0:7efa6655d94b 236 }
SomeRandomBloke 0:7efa6655d94b 237
SomeRandomBloke 0:7efa6655d94b 238 void N3310LCD::writeCharBig(BYTE xPos, BYTE yPos, BYTE ch, eDisplayMode mode)
SomeRandomBloke 0:7efa6655d94b 239 {
SomeRandomBloke 0:7efa6655d94b 240 BYTE sendByte;
SomeRandomBloke 3:9808f63fd2fe 241 int8_t colsUsed = 12;
SomeRandomBloke 0:7efa6655d94b 242 unsigned char* pFont = (unsigned char *) big_number;
SomeRandomBloke 1:51961974fe55 243
SomeRandomBloke 3:9808f63fd2fe 244
SomeRandomBloke 3:9808f63fd2fe 245 if(ch == '.') {
SomeRandomBloke 0:7efa6655d94b 246 ch = 10;
SomeRandomBloke 3:9808f63fd2fe 247 colsUsed=5;
SomeRandomBloke 3:9808f63fd2fe 248 } else if (ch == '+')
SomeRandomBloke 0:7efa6655d94b 249 ch = 11;
SomeRandomBloke 3:9808f63fd2fe 250 else if (ch == '-')
SomeRandomBloke 0:7efa6655d94b 251 ch = 12;
SomeRandomBloke 3:9808f63fd2fe 252 else if (ch == ':')
SomeRandomBloke 3:9808f63fd2fe 253 ch = 13;
SomeRandomBloke 3:9808f63fd2fe 254 else if (ch == '/')
SomeRandomBloke 3:9808f63fd2fe 255 ch = 14;
SomeRandomBloke 0:7efa6655d94b 256 else
SomeRandomBloke 0:7efa6655d94b 257 ch = ch & 0x0f;
SomeRandomBloke 1:51961974fe55 258
SomeRandomBloke 3:9808f63fd2fe 259 /*
SomeRandomBloke 3:9808f63fd2fe 260 for(BYTE i = 0; i < 3; i++) {
SomeRandomBloke 3:9808f63fd2fe 261 locate(xPos, yPos + i);
SomeRandomBloke 1:51961974fe55 262
SomeRandomBloke 3:9808f63fd2fe 263 for(BYTE j = 0; j < 16; j++) {
SomeRandomBloke 3:9808f63fd2fe 264 sendByte = *(pFont + ch*48 + i*16 + j);
SomeRandomBloke 3:9808f63fd2fe 265 writeData((mode == NORMAL)? sendByte : (sendByte^0xff));
SomeRandomBloke 3:9808f63fd2fe 266 }
SomeRandomBloke 3:9808f63fd2fe 267 }
SomeRandomBloke 3:9808f63fd2fe 268 */
SomeRandomBloke 3:9808f63fd2fe 269 if (xPos > LCDCOLMAX - colsUsed) xPos = LCDCOLMAX - colsUsed ; // ensure space is available for the character
SomeRandomBloke 3:9808f63fd2fe 270 if (yPos > LCDROWMAX - 3) yPos = LCDROWMAX - 3 ; // ensure space is available for the character
SomeRandomBloke 3:9808f63fd2fe 271
SomeRandomBloke 3:9808f63fd2fe 272 for(int8_t i=0; i<3; i++) {
SomeRandomBloke 3:9808f63fd2fe 273 locate( xPos, yPos + i);
SomeRandomBloke 3:9808f63fd2fe 274
SomeRandomBloke 3:9808f63fd2fe 275 for(int8_t j=0; j<colsUsed; j++) {
SomeRandomBloke 0:7efa6655d94b 276 sendByte = *(pFont + ch*48 + i*16 + j);
SomeRandomBloke 3:9808f63fd2fe 277 // ch_dat = pFont[ch*48 + i*16 +j]; // 16 cols in data for char even if we use fewer.
SomeRandomBloke 3:9808f63fd2fe 278 //ch_dat = pgm_read_byte(pFont+ch*48 + i*12 +j); // 12 cols in data for char even if we use fewer.
SomeRandomBloke 3:9808f63fd2fe 279 lcd_buffer[cursor_row][cursor_col + j] = (mode == NORMAL)? sendByte : (sendByte^0xff);
SomeRandomBloke 3:9808f63fd2fe 280
SomeRandomBloke 3:9808f63fd2fe 281 writeData( (mode == NORMAL)? sendByte : (sendByte^0xff));
SomeRandomBloke 0:7efa6655d94b 282 }
SomeRandomBloke 0:7efa6655d94b 283 }
SomeRandomBloke 3:9808f63fd2fe 284
SomeRandomBloke 3:9808f63fd2fe 285
SomeRandomBloke 3:9808f63fd2fe 286
SomeRandomBloke 0:7efa6655d94b 287 }
SomeRandomBloke 0:7efa6655d94b 288
SomeRandomBloke 0:7efa6655d94b 289 /*
SomeRandomBloke 0:7efa6655d94b 290 * Name : setPixel
SomeRandomBloke 0:7efa6655d94b 291 * Description : Set a single pixel either on or off, update display buffer.
SomeRandomBloke 0:7efa6655d94b 292 * Argument(s) : x,y - position, x = 0-83, y = 0-6
SomeRandomBloke 0:7efa6655d94b 293 * c - colour, either PIXEL_ON, PIXEL_OFF or PIXEL_XOR
SomeRandomBloke 0:7efa6655d94b 294 * Return value : none
SomeRandomBloke 0:7efa6655d94b 295 */
SomeRandomBloke 1:51961974fe55 296 void N3310LCD::setPixel( unsigned char x, unsigned char y, unsigned char c )
SomeRandomBloke 1:51961974fe55 297 {
SomeRandomBloke 1:51961974fe55 298 unsigned char value;
SomeRandomBloke 1:51961974fe55 299 unsigned char row;
SomeRandomBloke 1:51961974fe55 300
SomeRandomBloke 0:7efa6655d94b 301 // if( x < 0 || x >= LCDCOLMAX || y < 0 || y >= LCDPIXELROWMAX ) return;
SomeRandomBloke 0:7efa6655d94b 302 if( x >= LCDCOLMAX || y >= LCDPIXELROWMAX ) return;
SomeRandomBloke 0:7efa6655d94b 303
SomeRandomBloke 0:7efa6655d94b 304 row = y / 8;
SomeRandomBloke 0:7efa6655d94b 305
SomeRandomBloke 0:7efa6655d94b 306 value = lcd_buffer[row][x];
SomeRandomBloke 0:7efa6655d94b 307 if( c == PIXEL_ON ) {
SomeRandomBloke 0:7efa6655d94b 308 value |= (1 << (y % 8));
SomeRandomBloke 0:7efa6655d94b 309 } else if( c == PIXEL_XOR ) {
SomeRandomBloke 0:7efa6655d94b 310 value ^= (1 << (y % 8));
SomeRandomBloke 0:7efa6655d94b 311 } else {
SomeRandomBloke 0:7efa6655d94b 312 value &= ~(1 << (y % 8));
SomeRandomBloke 0:7efa6655d94b 313 }
SomeRandomBloke 0:7efa6655d94b 314
SomeRandomBloke 0:7efa6655d94b 315 lcd_buffer[row][x] = value;
SomeRandomBloke 0:7efa6655d94b 316
SomeRandomBloke 0:7efa6655d94b 317 locate (x,row);
SomeRandomBloke 3:9808f63fd2fe 318 writeData(value);
SomeRandomBloke 0:7efa6655d94b 319 }
SomeRandomBloke 0:7efa6655d94b 320
SomeRandomBloke 0:7efa6655d94b 321
SomeRandomBloke 0:7efa6655d94b 322 /*
SomeRandomBloke 0:7efa6655d94b 323 * Name : drawLine
SomeRandomBloke 0:7efa6655d94b 324 * Description : Draws a line between two points on the display.
SomeRandomBloke 0:7efa6655d94b 325 * Argument(s) : x1, y1 - Absolute pixel coordinates for line origin.
SomeRandomBloke 0:7efa6655d94b 326 * x2, y2 - Absolute pixel coordinates for line end.
SomeRandomBloke 0:7efa6655d94b 327 * c - either PIXEL_ON, PIXEL_OFF or PIXEL_XOR
SomeRandomBloke 0:7efa6655d94b 328 * Return value : none
SomeRandomBloke 0:7efa6655d94b 329 */
SomeRandomBloke 0:7efa6655d94b 330 void N3310LCD::drawLine(unsigned char x1, unsigned char y1,
SomeRandomBloke 1:51961974fe55 331 unsigned char x2, unsigned char y2, unsigned char c)
SomeRandomBloke 1:51961974fe55 332 {
SomeRandomBloke 0:7efa6655d94b 333 int dx, dy, stepx, stepy, fraction;
SomeRandomBloke 0:7efa6655d94b 334
SomeRandomBloke 0:7efa6655d94b 335 /* Calculate differential form */
SomeRandomBloke 0:7efa6655d94b 336 /* dy y2 - y1 */
SomeRandomBloke 0:7efa6655d94b 337 /* -- = ------- */
SomeRandomBloke 0:7efa6655d94b 338 /* dx x2 - x1 */
SomeRandomBloke 0:7efa6655d94b 339
SomeRandomBloke 0:7efa6655d94b 340 /* Take differences */
SomeRandomBloke 0:7efa6655d94b 341 dy = y2 - y1;
SomeRandomBloke 0:7efa6655d94b 342 dx = x2 - x1;
SomeRandomBloke 0:7efa6655d94b 343
SomeRandomBloke 0:7efa6655d94b 344 /* dy is negative */
SomeRandomBloke 0:7efa6655d94b 345 if ( dy < 0 ) {
SomeRandomBloke 0:7efa6655d94b 346 dy = -dy;
SomeRandomBloke 0:7efa6655d94b 347 stepy = -1;
SomeRandomBloke 0:7efa6655d94b 348 } else {
SomeRandomBloke 0:7efa6655d94b 349 stepy = 1;
SomeRandomBloke 0:7efa6655d94b 350 }
SomeRandomBloke 0:7efa6655d94b 351
SomeRandomBloke 0:7efa6655d94b 352 /* dx is negative */
SomeRandomBloke 0:7efa6655d94b 353 if ( dx < 0 ) {
SomeRandomBloke 0:7efa6655d94b 354 dx = -dx;
SomeRandomBloke 0:7efa6655d94b 355 stepx = -1;
SomeRandomBloke 0:7efa6655d94b 356 } else {
SomeRandomBloke 0:7efa6655d94b 357 stepx = 1;
SomeRandomBloke 0:7efa6655d94b 358 }
SomeRandomBloke 0:7efa6655d94b 359
SomeRandomBloke 0:7efa6655d94b 360 dx <<= 1;
SomeRandomBloke 0:7efa6655d94b 361 dy <<= 1;
SomeRandomBloke 0:7efa6655d94b 362
SomeRandomBloke 0:7efa6655d94b 363 /* Draw initial position */
SomeRandomBloke 0:7efa6655d94b 364 setPixel( x1, y1, c );
SomeRandomBloke 0:7efa6655d94b 365
SomeRandomBloke 0:7efa6655d94b 366 /* Draw next positions until end */
SomeRandomBloke 0:7efa6655d94b 367 if ( dx > dy ) {
SomeRandomBloke 0:7efa6655d94b 368 /* Take fraction */
SomeRandomBloke 0:7efa6655d94b 369 fraction = dy - ( dx >> 1);
SomeRandomBloke 0:7efa6655d94b 370 while ( x1 != x2 ) {
SomeRandomBloke 0:7efa6655d94b 371 if ( fraction >= 0 ) {
SomeRandomBloke 0:7efa6655d94b 372 y1 += stepy;
SomeRandomBloke 0:7efa6655d94b 373 fraction -= dx;
SomeRandomBloke 0:7efa6655d94b 374 }
SomeRandomBloke 0:7efa6655d94b 375 x1 += stepx;
SomeRandomBloke 0:7efa6655d94b 376 fraction += dy;
SomeRandomBloke 0:7efa6655d94b 377
SomeRandomBloke 0:7efa6655d94b 378 /* Draw calculated point */
SomeRandomBloke 0:7efa6655d94b 379 setPixel( x1, y1, c );
SomeRandomBloke 0:7efa6655d94b 380 }
SomeRandomBloke 0:7efa6655d94b 381 } else {
SomeRandomBloke 0:7efa6655d94b 382 /* Take fraction */
SomeRandomBloke 0:7efa6655d94b 383 fraction = dx - ( dy >> 1);
SomeRandomBloke 0:7efa6655d94b 384 while ( y1 != y2 ) {
SomeRandomBloke 0:7efa6655d94b 385 if ( fraction >= 0 ) {
SomeRandomBloke 0:7efa6655d94b 386 x1 += stepx;
SomeRandomBloke 0:7efa6655d94b 387 fraction -= dy;
SomeRandomBloke 0:7efa6655d94b 388 }
SomeRandomBloke 0:7efa6655d94b 389 y1 += stepy;
SomeRandomBloke 0:7efa6655d94b 390 fraction += dx;
SomeRandomBloke 0:7efa6655d94b 391
SomeRandomBloke 0:7efa6655d94b 392 /* Draw calculated point */
SomeRandomBloke 0:7efa6655d94b 393 setPixel( x1, y1, c );
SomeRandomBloke 0:7efa6655d94b 394 }
SomeRandomBloke 0:7efa6655d94b 395 }
SomeRandomBloke 0:7efa6655d94b 396 }
SomeRandomBloke 0:7efa6655d94b 397
SomeRandomBloke 0:7efa6655d94b 398
SomeRandomBloke 0:7efa6655d94b 399 /*
SomeRandomBloke 0:7efa6655d94b 400 * Name : drawRectangle
SomeRandomBloke 0:7efa6655d94b 401 * Description : Draw a rectangle given to top left and bottom right points
SomeRandomBloke 0:7efa6655d94b 402 * Argument(s) : x1, y1 - Absolute pixel coordinates for top left corner
SomeRandomBloke 0:7efa6655d94b 403 * x2, y2 - Absolute pixel coordinates for bottom right corner
SomeRandomBloke 0:7efa6655d94b 404 * c - either PIXEL_ON, PIXEL_OFF or PIXEL_XOR
SomeRandomBloke 0:7efa6655d94b 405 * Return value : none
SomeRandomBloke 0:7efa6655d94b 406 */
SomeRandomBloke 0:7efa6655d94b 407 void N3310LCD::drawRectangle(unsigned char x1, unsigned char y1,
SomeRandomBloke 1:51961974fe55 408 unsigned char x2, unsigned char y2, unsigned char c)
SomeRandomBloke 1:51961974fe55 409 {
SomeRandomBloke 0:7efa6655d94b 410 drawLine( x1, y1, x2, y1, c );
SomeRandomBloke 0:7efa6655d94b 411 drawLine( x1, y1, x1, y2, c );
SomeRandomBloke 0:7efa6655d94b 412 drawLine( x1, y2, x2, y2, c );
SomeRandomBloke 0:7efa6655d94b 413 drawLine( x2, y1, x2, y2, c );
SomeRandomBloke 0:7efa6655d94b 414 }
SomeRandomBloke 0:7efa6655d94b 415
SomeRandomBloke 0:7efa6655d94b 416
SomeRandomBloke 0:7efa6655d94b 417 /*
SomeRandomBloke 0:7efa6655d94b 418 * Name : drawFilledRectangle
SomeRandomBloke 0:7efa6655d94b 419 * Description : Draw a filled rectangle given to top left and bottom right points
SomeRandomBloke 0:7efa6655d94b 420 * just simply draws horizontal lines where the rectangle would be
SomeRandomBloke 0:7efa6655d94b 421 * Argument(s) : x1, y1 - Absolute pixel coordinates for top left corner
SomeRandomBloke 0:7efa6655d94b 422 * x2, y2 - Absolute pixel coordinates for bottom right corner
SomeRandomBloke 0:7efa6655d94b 423 * c - either PIXEL_ON, PIXEL_OFF or PIXEL_XOR
SomeRandomBloke 0:7efa6655d94b 424 * Return value : none
SomeRandomBloke 0:7efa6655d94b 425 */
SomeRandomBloke 0:7efa6655d94b 426 void N3310LCD::drawFilledRectangle(unsigned char x1, unsigned char y1,
SomeRandomBloke 1:51961974fe55 427 unsigned char x2, unsigned char y2, unsigned char c)
SomeRandomBloke 1:51961974fe55 428 {
SomeRandomBloke 0:7efa6655d94b 429 for(int i=y1; i <= y2; i++ ) {
SomeRandomBloke 0:7efa6655d94b 430 drawLine( x1, i, x2, i, c );
SomeRandomBloke 0:7efa6655d94b 431 }
SomeRandomBloke 0:7efa6655d94b 432 }
SomeRandomBloke 0:7efa6655d94b 433
SomeRandomBloke 0:7efa6655d94b 434
SomeRandomBloke 0:7efa6655d94b 435 /*
SomeRandomBloke 0:7efa6655d94b 436 * Name : drawCircle
SomeRandomBloke 1:51961974fe55 437 * Description : Draw a circle using Bresenham's algorithm.
SomeRandomBloke 0:7efa6655d94b 438 * Some small circles will look like squares!!
SomeRandomBloke 0:7efa6655d94b 439 * Argument(s) : xc, yc - Centre of circle
SomeRandomBloke 0:7efa6655d94b 440 * r - Radius
SomeRandomBloke 0:7efa6655d94b 441 * c - either PIXEL_ON, PIXEL_OFF or PIXEL_XOR
SomeRandomBloke 1:51961974fe55 442 * Return value : None
SomeRandomBloke 0:7efa6655d94b 443 */
SomeRandomBloke 0:7efa6655d94b 444 void N3310LCD::drawCircle(unsigned char xc, unsigned char yc,
SomeRandomBloke 1:51961974fe55 445 unsigned char r, unsigned char c)
SomeRandomBloke 1:51961974fe55 446 {
SomeRandomBloke 0:7efa6655d94b 447 int x=0;
SomeRandomBloke 0:7efa6655d94b 448 int y=r;
SomeRandomBloke 0:7efa6655d94b 449 int p=3-(2*r);
SomeRandomBloke 0:7efa6655d94b 450
SomeRandomBloke 1:51961974fe55 451 setPixel( (uint8_t)(xc+x),(uint8_t)(yc-y), c);
SomeRandomBloke 0:7efa6655d94b 452
SomeRandomBloke 1:51961974fe55 453 for(x=0; x<=y; x++) {
SomeRandomBloke 0:7efa6655d94b 454 if (p<0) {
SomeRandomBloke 0:7efa6655d94b 455 y=y;
SomeRandomBloke 0:7efa6655d94b 456 p=(p+(4*x)+6);
SomeRandomBloke 0:7efa6655d94b 457 } else {
SomeRandomBloke 0:7efa6655d94b 458 y=y-1;
SomeRandomBloke 0:7efa6655d94b 459 p=p+((4*(x-y)+10));
SomeRandomBloke 0:7efa6655d94b 460 }
SomeRandomBloke 0:7efa6655d94b 461
SomeRandomBloke 0:7efa6655d94b 462 setPixel((uint8_t)(xc+x),(uint8_t)(yc-y), c);
SomeRandomBloke 0:7efa6655d94b 463 setPixel((uint8_t)(xc-x),(uint8_t)(yc-y), c);
SomeRandomBloke 0:7efa6655d94b 464 setPixel((uint8_t)(xc+x),(uint8_t)(yc+y), c);
SomeRandomBloke 0:7efa6655d94b 465 setPixel((uint8_t)(xc-x),(uint8_t)(yc+y), c);
SomeRandomBloke 0:7efa6655d94b 466 setPixel((uint8_t)(xc+y),(uint8_t)(yc-x), c);
SomeRandomBloke 0:7efa6655d94b 467 setPixel((uint8_t)(xc-y),(uint8_t)(yc-x), c);
SomeRandomBloke 0:7efa6655d94b 468 setPixel((uint8_t)(xc+y),(uint8_t)(yc+x), c);
SomeRandomBloke 0:7efa6655d94b 469 setPixel((uint8_t)(xc-y),(uint8_t)(yc+x), c);
SomeRandomBloke 0:7efa6655d94b 470 }
SomeRandomBloke 0:7efa6655d94b 471 }