Initial commit
Fork of TextLCD by
TextLCD.cpp@19:c747b9e2e7b8, 2013-04-19 (annotated)
- Committer:
- wim
- Date:
- Fri Apr 19 19:36:37 2013 +0000
- Revision:
- 19:c747b9e2e7b8
- Parent:
- 18:bd65dc10f27f
- Child:
- 20:e0da005a777f
Beta version supporting WS0010 and ST7036 DC/DC converters
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
simon | 1:ac48b187213c | 1 | /* mbed TextLCD Library, for a 4-bit LCD based on HD44780 |
simon | 6:e4cb7ddee0d3 | 2 | * Copyright (c) 2007-2010, sford, http://mbed.org |
wim | 14:0c32b66b14b8 | 3 | * 2013, v01: WH, Added LCD types, fixed LCD address issues, added Cursor and UDCs |
wim | 14:0c32b66b14b8 | 4 | * 2013, v02: WH, Added I2C and SPI bus interfaces |
wim | 15:b70ebfffb258 | 5 | * 2013, v03: WH, Added support for LCD40x4 which uses 2 controllers |
wim | 18:bd65dc10f27f | 6 | * 2013, v04: WH, Added support for Display On/Off, improved 4bit bootprocess |
wim | 18:bd65dc10f27f | 7 | * 2013, v05: WH, Added support for 8x2B, added some UDCs |
wim | 19:c747b9e2e7b8 | 8 | * 2013, v06: WH, Added support for devices that use internal DC/DC converters |
simon | 1:ac48b187213c | 9 | * |
simon | 1:ac48b187213c | 10 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
simon | 1:ac48b187213c | 11 | * of this software and associated documentation files (the "Software"), to deal |
simon | 1:ac48b187213c | 12 | * in the Software without restriction, including without limitation the rights |
simon | 1:ac48b187213c | 13 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
simon | 1:ac48b187213c | 14 | * copies of the Software, and to permit persons to whom the Software is |
simon | 1:ac48b187213c | 15 | * furnished to do so, subject to the following conditions: |
simon | 1:ac48b187213c | 16 | * |
simon | 1:ac48b187213c | 17 | * The above copyright notice and this permission notice shall be included in |
simon | 1:ac48b187213c | 18 | * all copies or substantial portions of the Software. |
simon | 1:ac48b187213c | 19 | * |
simon | 1:ac48b187213c | 20 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
simon | 1:ac48b187213c | 21 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
simon | 1:ac48b187213c | 22 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
simon | 1:ac48b187213c | 23 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
simon | 1:ac48b187213c | 24 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
simon | 1:ac48b187213c | 25 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
simon | 1:ac48b187213c | 26 | * THE SOFTWARE. |
simon | 1:ac48b187213c | 27 | */ |
simon | 1:ac48b187213c | 28 | |
simon | 1:ac48b187213c | 29 | #include "TextLCD.h" |
simon | 1:ac48b187213c | 30 | #include "mbed.h" |
simon | 1:ac48b187213c | 31 | |
wim | 15:b70ebfffb258 | 32 | |
wim | 15:b70ebfffb258 | 33 | /* Create a TextLCD interface for using regular mbed pins |
wim | 15:b70ebfffb258 | 34 | * |
wim | 19:c747b9e2e7b8 | 35 | * @param rs Instruction/data control line |
wim | 19:c747b9e2e7b8 | 36 | * @param e Enable line (clock) |
wim | 19:c747b9e2e7b8 | 37 | * @param d4-d7 Data lines for using as a 4-bit interface |
wim | 19:c747b9e2e7b8 | 38 | * @param type Sets the panel size/addressing mode (default = LCD16x2) |
wim | 19:c747b9e2e7b8 | 39 | * @param e2 Enable2 line (clock for second controller, LCD40x4 only) |
wim | 19:c747b9e2e7b8 | 40 | * @param ctrl LCD controller (default = HD44780) |
wim | 15:b70ebfffb258 | 41 | */ |
wim | 13:24506ba22480 | 42 | TextLCD::TextLCD(PinName rs, PinName e, |
wim | 13:24506ba22480 | 43 | PinName d4, PinName d5, PinName d6, PinName d7, |
wim | 19:c747b9e2e7b8 | 44 | LCDType type, PinName e2, LCDCtrl ctrl) : _rs(rs), _e(e), _e2(e2), |
wim | 19:c747b9e2e7b8 | 45 | _d(d4, d5, d6, d7), |
wim | 19:c747b9e2e7b8 | 46 | _cs(NC), |
wim | 19:c747b9e2e7b8 | 47 | _type(type), |
wim | 19:c747b9e2e7b8 | 48 | _ctrl(ctrl) { |
wim | 13:24506ba22480 | 49 | |
wim | 13:24506ba22480 | 50 | _busType = _PinBus; |
wim | 13:24506ba22480 | 51 | |
wim | 13:24506ba22480 | 52 | _init(); |
wim | 13:24506ba22480 | 53 | |
wim | 13:24506ba22480 | 54 | } |
wim | 13:24506ba22480 | 55 | |
wim | 15:b70ebfffb258 | 56 | /* Create a TextLCD interface using an I2C PC8574 portexpander |
wim | 15:b70ebfffb258 | 57 | * |
wim | 15:b70ebfffb258 | 58 | * @param i2c I2C Bus |
wim | 15:b70ebfffb258 | 59 | * @param deviceAddress I2C slave address (PCF8574) |
wim | 15:b70ebfffb258 | 60 | * @param type Sets the panel size/addressing mode (default = LCD16x2) |
wim | 19:c747b9e2e7b8 | 61 | * @param ctrl LCD controller (default = HD44780) |
wim | 15:b70ebfffb258 | 62 | */ |
wim | 19:c747b9e2e7b8 | 63 | TextLCD::TextLCD(I2C *i2c, char deviceAddress, LCDType type, LCDCtrl ctrl) : |
wim | 15:b70ebfffb258 | 64 | _rs(NC), _e(NC), _e2(NC), |
wim | 15:b70ebfffb258 | 65 | _d(NC), |
wim | 15:b70ebfffb258 | 66 | _i2c(i2c), |
wim | 15:b70ebfffb258 | 67 | _cs(NC), |
wim | 19:c747b9e2e7b8 | 68 | _type(type), |
wim | 19:c747b9e2e7b8 | 69 | _ctrl(ctrl) { |
wim | 15:b70ebfffb258 | 70 | |
wim | 13:24506ba22480 | 71 | _slaveAddress = deviceAddress; |
wim | 13:24506ba22480 | 72 | _busType = _I2CBus; |
simon | 1:ac48b187213c | 73 | |
wim | 13:24506ba22480 | 74 | |
wim | 13:24506ba22480 | 75 | // Init the portexpander bus |
wim | 15:b70ebfffb258 | 76 | _lcd_bus = D_LCD_BUS_DEF; |
wim | 13:24506ba22480 | 77 | |
wim | 13:24506ba22480 | 78 | // write the new data to the portexpander |
wim | 13:24506ba22480 | 79 | _i2c->write(_slaveAddress, &_lcd_bus, 1); |
wim | 13:24506ba22480 | 80 | |
wim | 13:24506ba22480 | 81 | _init(); |
wim | 13:24506ba22480 | 82 | |
wim | 13:24506ba22480 | 83 | } |
simon | 1:ac48b187213c | 84 | |
wim | 15:b70ebfffb258 | 85 | /* Create a TextLCD interface using an SPI 74595 portexpander |
wim | 15:b70ebfffb258 | 86 | * |
wim | 15:b70ebfffb258 | 87 | * @param spi SPI Bus |
wim | 15:b70ebfffb258 | 88 | * @param cs chip select pin (active low) |
wim | 15:b70ebfffb258 | 89 | * @param type Sets the panel size/addressing mode (default = LCD16x2) |
wim | 19:c747b9e2e7b8 | 90 | * @param ctrl LCD controller (default = HD44780) |
wim | 15:b70ebfffb258 | 91 | */ |
wim | 19:c747b9e2e7b8 | 92 | TextLCD::TextLCD(SPI *spi, PinName cs, LCDType type, LCDCtrl ctrl) : |
wim | 15:b70ebfffb258 | 93 | _rs(NC), _e(NC), _e2(NC), |
wim | 15:b70ebfffb258 | 94 | _d(NC), |
wim | 15:b70ebfffb258 | 95 | _spi(spi), |
wim | 15:b70ebfffb258 | 96 | _cs(cs), |
wim | 19:c747b9e2e7b8 | 97 | _type(type), |
wim | 19:c747b9e2e7b8 | 98 | _ctrl(ctrl) { |
wim | 14:0c32b66b14b8 | 99 | |
wim | 14:0c32b66b14b8 | 100 | _busType = _SPIBus; |
wim | 14:0c32b66b14b8 | 101 | |
wim | 14:0c32b66b14b8 | 102 | // Setup the spi for 8 bit data, low steady state clock, |
wim | 14:0c32b66b14b8 | 103 | // rising edge capture, with a 500KHz or 1MHz clock rate |
wim | 14:0c32b66b14b8 | 104 | _spi->format(8,0); |
wim | 14:0c32b66b14b8 | 105 | _spi->frequency(500000); |
wim | 14:0c32b66b14b8 | 106 | //_spi.frequency(1000000); |
wim | 14:0c32b66b14b8 | 107 | |
wim | 14:0c32b66b14b8 | 108 | |
wim | 14:0c32b66b14b8 | 109 | // Init the portexpander bus |
wim | 15:b70ebfffb258 | 110 | _lcd_bus = D_LCD_BUS_DEF; |
wim | 14:0c32b66b14b8 | 111 | |
wim | 14:0c32b66b14b8 | 112 | // write the new data to the portexpander |
wim | 14:0c32b66b14b8 | 113 | _setCS(false); |
wim | 14:0c32b66b14b8 | 114 | _spi->write(_lcd_bus); |
wim | 14:0c32b66b14b8 | 115 | _setCS(true); |
wim | 14:0c32b66b14b8 | 116 | |
wim | 14:0c32b66b14b8 | 117 | _init(); |
wim | 14:0c32b66b14b8 | 118 | |
wim | 14:0c32b66b14b8 | 119 | } |
wim | 14:0c32b66b14b8 | 120 | |
wim | 14:0c32b66b14b8 | 121 | |
wim | 15:b70ebfffb258 | 122 | /* Init the LCD Controller(s) |
wim | 13:24506ba22480 | 123 | * Clear display |
wim | 13:24506ba22480 | 124 | */ |
wim | 13:24506ba22480 | 125 | void TextLCD::_init() { |
wim | 15:b70ebfffb258 | 126 | |
wim | 15:b70ebfffb258 | 127 | // Select and configure second LCD controller when needed |
wim | 15:b70ebfffb258 | 128 | if(_type==LCD40x4) { |
wim | 19:c747b9e2e7b8 | 129 | _ctrl_idx=TextLCD::_LCDCtrl_1; // Select 2nd controller |
wim | 15:b70ebfffb258 | 130 | |
wim | 19:c747b9e2e7b8 | 131 | _initCtrl(); // Init 2nd controller |
wim | 15:b70ebfffb258 | 132 | |
wim | 15:b70ebfffb258 | 133 | // Secondary LCD controller Clearscreen |
wim | 15:b70ebfffb258 | 134 | _writeCommand(0x01); // cls, and set cursor to 0 |
wim | 15:b70ebfffb258 | 135 | wait_ms(10); // The CLS command takes 1.64 ms. |
wim | 15:b70ebfffb258 | 136 | // Since we are not using the Busy flag, Lets be safe and take 10 ms |
wim | 15:b70ebfffb258 | 137 | |
wim | 15:b70ebfffb258 | 138 | } |
wim | 15:b70ebfffb258 | 139 | |
wim | 15:b70ebfffb258 | 140 | // Select and configure primary LCD controller |
wim | 19:c747b9e2e7b8 | 141 | _ctrl_idx=TextLCD::_LCDCtrl_0; // Select primary controller |
wim | 13:24506ba22480 | 142 | |
wim | 19:c747b9e2e7b8 | 143 | _initCtrl(); // Init primary controller |
wim | 15:b70ebfffb258 | 144 | |
wim | 15:b70ebfffb258 | 145 | // Primary LCD controller Clearscreen |
wim | 15:b70ebfffb258 | 146 | _writeCommand(0x01); // cls, and set cursor to 0 |
wim | 15:b70ebfffb258 | 147 | |
wim | 15:b70ebfffb258 | 148 | wait_ms(10); // The CLS command takes 1.64 ms. |
wim | 15:b70ebfffb258 | 149 | // Since we are not using the Busy flag, Lets be safe and take 10 ms |
wim | 15:b70ebfffb258 | 150 | |
wim | 15:b70ebfffb258 | 151 | } |
wim | 15:b70ebfffb258 | 152 | |
wim | 15:b70ebfffb258 | 153 | /* Init the LCD controller |
wim | 15:b70ebfffb258 | 154 | * 4-bit mode, number of lines, fonttype, no cursor etc |
wim | 15:b70ebfffb258 | 155 | * |
wim | 15:b70ebfffb258 | 156 | */ |
wim | 15:b70ebfffb258 | 157 | void TextLCD::_initCtrl() { |
wim | 15:b70ebfffb258 | 158 | |
wim | 13:24506ba22480 | 159 | _setRS(false); // command mode |
wim | 13:24506ba22480 | 160 | |
wim | 15:b70ebfffb258 | 161 | wait_ms(20); // Wait 20ms to ensure powered up |
simon | 1:ac48b187213c | 162 | |
wim | 17:652ab113bc2e | 163 | // send "Display Settings" 3 times (Only top nibble of 0x30 as we've got 4-bit bus) |
wim | 17:652ab113bc2e | 164 | for (int i=0; i<3; i++) { |
wim | 17:652ab113bc2e | 165 | _writeNibble(0x3); |
wim | 17:652ab113bc2e | 166 | wait_ms(15); // this command takes 1.64ms, so wait for it |
wim | 17:652ab113bc2e | 167 | } |
wim | 17:652ab113bc2e | 168 | _writeNibble(0x2); // 4-bit mode |
wim | 17:652ab113bc2e | 169 | wait_us(40); // most instructions take 40us |
wim | 18:bd65dc10f27f | 170 | |
wim | 18:bd65dc10f27f | 171 | // Display is now in 4-bit mode |
wim | 18:bd65dc10f27f | 172 | |
wim | 19:c747b9e2e7b8 | 173 | |
wim | 19:c747b9e2e7b8 | 174 | // Device specific initialisations for DC/DC converter to generate VLCD or VLED |
wim | 19:c747b9e2e7b8 | 175 | switch (_ctrl) { |
wim | 19:c747b9e2e7b8 | 176 | case ST7063: |
wim | 19:c747b9e2e7b8 | 177 | // ST7036 controller: Initialise Voltage booster for VLCD. VDD=5V |
wim | 19:c747b9e2e7b8 | 178 | // Note: supports 1,2 or 3 lines |
wim | 19:c747b9e2e7b8 | 179 | _writeByte( 0x29 ); // 4-bit Databus, 2 Lines, Select Instruction table 1 |
wim | 19:c747b9e2e7b8 | 180 | wait_us(27); // > 26,3ms |
wim | 19:c747b9e2e7b8 | 181 | _writeByte( 0x14 ); // Bias: 1/5, 2-Lines LCD |
wim | 19:c747b9e2e7b8 | 182 | wait_us(30); // > 26,3ms |
wim | 19:c747b9e2e7b8 | 183 | _writeByte( 0x55 ); // Icon off, Booster on, Set Contrast C5, C4 |
wim | 19:c747b9e2e7b8 | 184 | wait_us(30); // > 26,3ms |
wim | 19:c747b9e2e7b8 | 185 | _writeByte( 0x6d ); // Voltagefollower On, Ampl ratio Rab2, Rab1, Rab0 |
wim | 19:c747b9e2e7b8 | 186 | wait_ms(200); // > 200ms! |
wim | 19:c747b9e2e7b8 | 187 | _writeByte( 0x78 ); // Set Contrast C3, C2, C1, C0 |
wim | 19:c747b9e2e7b8 | 188 | wait_us(30); // > 26,3ms |
wim | 19:c747b9e2e7b8 | 189 | _writeByte( 0x28 ); // Return to Instruction table 0 |
wim | 19:c747b9e2e7b8 | 190 | wait_ms(50); |
wim | 19:c747b9e2e7b8 | 191 | |
wim | 19:c747b9e2e7b8 | 192 | break; |
wim | 19:c747b9e2e7b8 | 193 | |
wim | 19:c747b9e2e7b8 | 194 | case WS0010: |
wim | 19:c747b9e2e7b8 | 195 | // WS0010 OLED controller: Initialise DC/DC Voltage converter for LEDs |
wim | 19:c747b9e2e7b8 | 196 | // Note: supports 1 or 2 lines (and 16x100 graphics) |
wim | 19:c747b9e2e7b8 | 197 | // supports 4 fonts (English/Japanese (default), Western European-I, English/Russian, Western European-II) |
wim | 19:c747b9e2e7b8 | 198 | |
wim | 19:c747b9e2e7b8 | 199 | // Cursor/Disp shift set 0001 SC RL 0 0 |
wim | 19:c747b9e2e7b8 | 200 | // |
wim | 19:c747b9e2e7b8 | 201 | // Mode en Power set 0001 GC PWR 1 1 |
wim | 19:c747b9e2e7b8 | 202 | // GC = 0 (Graph Mode=1, Char Mode=0) |
wim | 19:c747b9e2e7b8 | 203 | // PWR = (DC/DC On/Off) |
wim | 19:c747b9e2e7b8 | 204 | |
wim | 19:c747b9e2e7b8 | 205 | //_writeCommand(0x13); // DC/DC off |
wim | 19:c747b9e2e7b8 | 206 | |
wim | 19:c747b9e2e7b8 | 207 | _writeCommand(0x17); // DC/DC on |
wim | 19:c747b9e2e7b8 | 208 | wait_ms(10); |
wim | 19:c747b9e2e7b8 | 209 | |
wim | 19:c747b9e2e7b8 | 210 | break; |
wim | 19:c747b9e2e7b8 | 211 | |
wim | 19:c747b9e2e7b8 | 212 | default: |
wim | 19:c747b9e2e7b8 | 213 | // Devices that do not use DC/DC Voltage converters but external VLCD |
wim | 19:c747b9e2e7b8 | 214 | break; |
wim | 19:c747b9e2e7b8 | 215 | } |
wim | 14:0c32b66b14b8 | 216 | |
wim | 18:bd65dc10f27f | 217 | // Initialise Display configuration |
wim | 10:dd9b3a696acd | 218 | switch (_type) { |
wim | 10:dd9b3a696acd | 219 | case LCD8x1: |
wim | 18:bd65dc10f27f | 220 | case LCD8x2B: |
wim | 18:bd65dc10f27f | 221 | //8x1 is a regular 1 line display |
wim | 18:bd65dc10f27f | 222 | //8x2B is a special case of 16x1 |
wim | 15:b70ebfffb258 | 223 | _writeCommand(0x20); // Function set 001 DL N F - - |
wim | 15:b70ebfffb258 | 224 | // DL=0 (4 bits bus) |
wim | 13:24506ba22480 | 225 | // N=0 (1 line) |
wim | 13:24506ba22480 | 226 | // F=0 (5x7 dots font) |
wim | 10:dd9b3a696acd | 227 | break; |
wim | 10:dd9b3a696acd | 228 | |
wim | 10:dd9b3a696acd | 229 | case LCD24x4: |
wim | 10:dd9b3a696acd | 230 | // Special mode for KS0078 |
wim | 15:b70ebfffb258 | 231 | _writeCommand(0x2A); // Function set 001 DL N RE DH REV |
wim | 15:b70ebfffb258 | 232 | // DL=0 (4 bits bus) |
wim | 13:24506ba22480 | 233 | // N=1 (Dont care for KS0078) |
wim | 13:24506ba22480 | 234 | // RE=0 (Extended Regs, special mode for KS0078) |
wim | 13:24506ba22480 | 235 | // DH=1 (Disp shift, special mode for KS0078) |
wim | 13:24506ba22480 | 236 | // REV=0 (Reverse, special mode for KS0078) |
wim | 10:dd9b3a696acd | 237 | |
wim | 15:b70ebfffb258 | 238 | _writeCommand(0x2E); // Function set 001 DL N RE DH REV |
wim | 15:b70ebfffb258 | 239 | // DL=0 (4 bits bus) |
wim | 13:24506ba22480 | 240 | // N=1 (Dont care for KS0078) |
wim | 13:24506ba22480 | 241 | // RE=1 (Ena Extended Regs, special mode for KS0078) |
wim | 13:24506ba22480 | 242 | // DH=1 (Disp shift, special mode for KS0078) |
wim | 13:24506ba22480 | 243 | // REV=0 (Reverse, special mode for KS0078) |
wim | 10:dd9b3a696acd | 244 | |
wim | 13:24506ba22480 | 245 | _writeCommand(0x09); // Ext Function set 0000 1 FW BW NW |
wim | 13:24506ba22480 | 246 | // FW=0 (5-dot font, special mode for KS0078) |
wim | 13:24506ba22480 | 247 | // BW=0 (Cur BW invert disable, special mode for KS0078) |
wim | 13:24506ba22480 | 248 | // NW=1 (4 Line, special mode for KS0078) |
wim | 10:dd9b3a696acd | 249 | |
wim | 15:b70ebfffb258 | 250 | _writeCommand(0x2A); // Function set 001 DL N RE DH REV |
wim | 15:b70ebfffb258 | 251 | // DL=0 (4 bits bus) |
wim | 13:24506ba22480 | 252 | // N=1 (Dont care for KS0078) |
wim | 13:24506ba22480 | 253 | // RE=0 (Dis. Extended Regs, special mode for KS0078) |
wim | 13:24506ba22480 | 254 | // DH=1 (Disp shift, special mode for KS0078) |
wim | 13:24506ba22480 | 255 | // REV=0 (Reverse, special mode for KS0078) |
wim | 10:dd9b3a696acd | 256 | break; |
wim | 10:dd9b3a696acd | 257 | |
wim | 15:b70ebfffb258 | 258 | // All other LCD types are initialised as 2 Line displays (including LCD40x4) |
wim | 10:dd9b3a696acd | 259 | default: |
wim | 15:b70ebfffb258 | 260 | _writeCommand(0x28); // Function set 001 DL N F - - |
wim | 15:b70ebfffb258 | 261 | // DL=0 (4 bits bus) |
wim | 13:24506ba22480 | 262 | // N=1 (2 lines) |
wim | 15:b70ebfffb258 | 263 | // F=0 (5x7 dots font, only option for 2 line display) |
wim | 13:24506ba22480 | 264 | // - (Don't care) |
wim | 10:dd9b3a696acd | 265 | |
wim | 10:dd9b3a696acd | 266 | break; |
wim | 10:dd9b3a696acd | 267 | } |
wim | 10:dd9b3a696acd | 268 | |
wim | 13:24506ba22480 | 269 | _writeCommand(0x06); // Entry Mode 0000 01 CD S |
wim | 13:24506ba22480 | 270 | // Cursor Direction and Display Shift |
wim | 13:24506ba22480 | 271 | // CD=1 (Cur incr) |
wim | 13:24506ba22480 | 272 | // S=0 (No display shift) |
wim | 10:dd9b3a696acd | 273 | |
wim | 13:24506ba22480 | 274 | // _writeCommand(0x0C); // Display Ctrl 0000 1 D C B |
wim | 17:652ab113bc2e | 275 | // // Display On, Cursor Off, Blink Off |
wim | 15:b70ebfffb258 | 276 | setCursor(TextLCD::CurOff_BlkOff); |
wim | 17:652ab113bc2e | 277 | setMode(TextLCD::DispOn); |
simon | 1:ac48b187213c | 278 | } |
simon | 1:ac48b187213c | 279 | |
wim | 8:03116f75b66e | 280 | |
wim | 16:c276b75e6585 | 281 | // Clear the screen, Cursor home. |
wim | 15:b70ebfffb258 | 282 | void TextLCD::cls() { |
wim | 15:b70ebfffb258 | 283 | |
wim | 15:b70ebfffb258 | 284 | // Select and configure second LCD controller when needed |
wim | 15:b70ebfffb258 | 285 | if(_type==LCD40x4) { |
wim | 19:c747b9e2e7b8 | 286 | _ctrl_idx=TextLCD::_LCDCtrl_1; // Select 2nd controller |
wim | 15:b70ebfffb258 | 287 | |
wim | 15:b70ebfffb258 | 288 | // Second LCD controller Cursor always Off |
wim | 17:652ab113bc2e | 289 | _setCursorAndDisplayMode(_currentMode, TextLCD::CurOff_BlkOff); |
wim | 15:b70ebfffb258 | 290 | |
wim | 15:b70ebfffb258 | 291 | // Second LCD controller Clearscreen |
wim | 15:b70ebfffb258 | 292 | _writeCommand(0x01); // cls, and set cursor to 0 |
wim | 15:b70ebfffb258 | 293 | |
wim | 15:b70ebfffb258 | 294 | wait_ms(10); // The CLS command takes 1.64 ms. |
wim | 15:b70ebfffb258 | 295 | // Since we are not using the Busy flag, Lets be safe and take 10 ms |
wim | 15:b70ebfffb258 | 296 | |
wim | 15:b70ebfffb258 | 297 | |
wim | 19:c747b9e2e7b8 | 298 | _ctrl_idx=TextLCD::_LCDCtrl_0; // Select primary controller |
wim | 15:b70ebfffb258 | 299 | } |
wim | 15:b70ebfffb258 | 300 | |
wim | 15:b70ebfffb258 | 301 | // Primary LCD controller Clearscreen |
wim | 15:b70ebfffb258 | 302 | _writeCommand(0x01); // cls, and set cursor to 0 |
wim | 15:b70ebfffb258 | 303 | |
wim | 15:b70ebfffb258 | 304 | wait_ms(10); // The CLS command takes 1.64 ms. |
wim | 15:b70ebfffb258 | 305 | // Since we are not using the Busy flag, Lets be safe and take 10 ms |
wim | 15:b70ebfffb258 | 306 | |
wim | 15:b70ebfffb258 | 307 | // Restore cursormode on primary LCD controller when needed |
wim | 15:b70ebfffb258 | 308 | if(_type==LCD40x4) { |
wim | 17:652ab113bc2e | 309 | _setCursorAndDisplayMode(_currentMode,_currentCursor); |
wim | 15:b70ebfffb258 | 310 | } |
wim | 15:b70ebfffb258 | 311 | |
wim | 15:b70ebfffb258 | 312 | _row=0; // Reset Cursor location |
wim | 15:b70ebfffb258 | 313 | _column=0; |
simon | 1:ac48b187213c | 314 | } |
simon | 1:ac48b187213c | 315 | |
wim | 16:c276b75e6585 | 316 | // Move cursor to selected row and column |
simon | 1:ac48b187213c | 317 | void TextLCD::locate(int column, int row) { |
wim | 15:b70ebfffb258 | 318 | |
wim | 15:b70ebfffb258 | 319 | // setAddress() does all the heavy lifting: |
wim | 15:b70ebfffb258 | 320 | // check column and row sanity, |
wim | 15:b70ebfffb258 | 321 | // switch controllers for LCD40x4 if needed |
wim | 15:b70ebfffb258 | 322 | // switch cursor for LCD40x4 if needed |
wim | 15:b70ebfffb258 | 323 | // set the new memory address to show cursor at correct location |
wim | 15:b70ebfffb258 | 324 | setAddress(column, row); |
wim | 15:b70ebfffb258 | 325 | |
wim | 15:b70ebfffb258 | 326 | } |
wim | 15:b70ebfffb258 | 327 | |
wim | 15:b70ebfffb258 | 328 | |
wim | 16:c276b75e6585 | 329 | // Write a single character (Stream implementation) |
wim | 15:b70ebfffb258 | 330 | int TextLCD::_putc(int value) { |
wim | 15:b70ebfffb258 | 331 | int addr; |
wim | 15:b70ebfffb258 | 332 | |
wim | 15:b70ebfffb258 | 333 | if (value == '\n') { |
wim | 15:b70ebfffb258 | 334 | //No character to write |
wim | 15:b70ebfffb258 | 335 | |
wim | 15:b70ebfffb258 | 336 | //Update Cursor |
wim | 15:b70ebfffb258 | 337 | _column = 0; |
wim | 15:b70ebfffb258 | 338 | _row++; |
wim | 15:b70ebfffb258 | 339 | if (_row >= rows()) { |
wim | 15:b70ebfffb258 | 340 | _row = 0; |
wim | 15:b70ebfffb258 | 341 | } |
wim | 15:b70ebfffb258 | 342 | } |
wim | 15:b70ebfffb258 | 343 | else { |
wim | 15:b70ebfffb258 | 344 | //Character to write |
wim | 15:b70ebfffb258 | 345 | _writeData(value); |
wim | 15:b70ebfffb258 | 346 | |
wim | 15:b70ebfffb258 | 347 | //Update Cursor |
wim | 15:b70ebfffb258 | 348 | _column++; |
wim | 15:b70ebfffb258 | 349 | if (_column >= columns()) { |
wim | 15:b70ebfffb258 | 350 | _column = 0; |
wim | 15:b70ebfffb258 | 351 | _row++; |
wim | 15:b70ebfffb258 | 352 | if (_row >= rows()) { |
wim | 15:b70ebfffb258 | 353 | _row = 0; |
wim | 15:b70ebfffb258 | 354 | } |
wim | 15:b70ebfffb258 | 355 | } |
wim | 15:b70ebfffb258 | 356 | } //else |
wim | 15:b70ebfffb258 | 357 | |
wim | 15:b70ebfffb258 | 358 | //Set next memoryaddress, make sure cursor blinks at next location |
wim | 15:b70ebfffb258 | 359 | addr = getAddress(_column, _row); |
wim | 15:b70ebfffb258 | 360 | _writeCommand(0x80 | addr); |
wim | 15:b70ebfffb258 | 361 | |
wim | 15:b70ebfffb258 | 362 | return value; |
wim | 15:b70ebfffb258 | 363 | } |
wim | 15:b70ebfffb258 | 364 | |
wim | 15:b70ebfffb258 | 365 | |
wim | 16:c276b75e6585 | 366 | // get a single character (Stream implementation) |
simon | 1:ac48b187213c | 367 | int TextLCD::_getc() { |
simon | 1:ac48b187213c | 368 | return -1; |
simon | 1:ac48b187213c | 369 | } |
simon | 1:ac48b187213c | 370 | |
wim | 16:c276b75e6585 | 371 | // Set E pin (or E2 pin) |
wim | 16:c276b75e6585 | 372 | // Used for mbed pins, I2C bus expander or SPI shifregister |
wim | 13:24506ba22480 | 373 | void TextLCD::_setEnable(bool value) { |
wim | 13:24506ba22480 | 374 | |
wim | 13:24506ba22480 | 375 | switch(_busType) { |
wim | 13:24506ba22480 | 376 | case _PinBus : |
wim | 19:c747b9e2e7b8 | 377 | if(_ctrl_idx==TextLCD::_LCDCtrl_0) { |
wim | 15:b70ebfffb258 | 378 | if (value) |
wim | 15:b70ebfffb258 | 379 | _e = 1; // Set E bit |
wim | 15:b70ebfffb258 | 380 | else |
wim | 15:b70ebfffb258 | 381 | _e = 0; // Reset E bit |
wim | 15:b70ebfffb258 | 382 | } |
wim | 15:b70ebfffb258 | 383 | else { |
wim | 15:b70ebfffb258 | 384 | if (value) |
wim | 15:b70ebfffb258 | 385 | _e2 = 1; // Set E2 bit |
wim | 15:b70ebfffb258 | 386 | else |
wim | 15:b70ebfffb258 | 387 | _e2 = 0; // Reset E2 bit |
wim | 15:b70ebfffb258 | 388 | } |
wim | 15:b70ebfffb258 | 389 | |
wim | 13:24506ba22480 | 390 | break; |
wim | 13:24506ba22480 | 391 | |
wim | 13:24506ba22480 | 392 | case _I2CBus : |
wim | 15:b70ebfffb258 | 393 | |
wim | 19:c747b9e2e7b8 | 394 | if(_ctrl_idx==TextLCD::_LCDCtrl_0) { |
wim | 15:b70ebfffb258 | 395 | if (value) |
wim | 15:b70ebfffb258 | 396 | _lcd_bus |= D_LCD_E; // Set E bit |
wim | 15:b70ebfffb258 | 397 | else |
wim | 15:b70ebfffb258 | 398 | _lcd_bus &= ~D_LCD_E; // Reset E bit |
wim | 15:b70ebfffb258 | 399 | } |
wim | 15:b70ebfffb258 | 400 | else { |
wim | 15:b70ebfffb258 | 401 | if (value) |
wim | 15:b70ebfffb258 | 402 | _lcd_bus |= D_LCD_E2; // Set E2 bit |
wim | 15:b70ebfffb258 | 403 | else |
wim | 15:b70ebfffb258 | 404 | _lcd_bus &= ~D_LCD_E2; // Reset E2bit |
wim | 15:b70ebfffb258 | 405 | } |
wim | 15:b70ebfffb258 | 406 | |
wim | 15:b70ebfffb258 | 407 | // write the new data to the I2C portexpander |
wim | 14:0c32b66b14b8 | 408 | _i2c->write(_slaveAddress, &_lcd_bus, 1); |
wim | 15:b70ebfffb258 | 409 | |
wim | 13:24506ba22480 | 410 | break; |
wim | 13:24506ba22480 | 411 | |
wim | 13:24506ba22480 | 412 | case _SPIBus : |
wim | 19:c747b9e2e7b8 | 413 | if(_ctrl_idx==TextLCD::_LCDCtrl_0) { |
wim | 15:b70ebfffb258 | 414 | if (value) |
wim | 15:b70ebfffb258 | 415 | _lcd_bus |= D_LCD_E; // Set E bit |
wim | 15:b70ebfffb258 | 416 | else |
wim | 15:b70ebfffb258 | 417 | _lcd_bus &= ~D_LCD_E; // Reset E bit |
wim | 15:b70ebfffb258 | 418 | } |
wim | 15:b70ebfffb258 | 419 | else { |
wim | 15:b70ebfffb258 | 420 | if (value) |
wim | 15:b70ebfffb258 | 421 | _lcd_bus |= D_LCD_E2; // Set E2 bit |
wim | 15:b70ebfffb258 | 422 | else |
wim | 15:b70ebfffb258 | 423 | _lcd_bus &= ~D_LCD_E2; // Reset E2 bit |
wim | 15:b70ebfffb258 | 424 | } |
wim | 15:b70ebfffb258 | 425 | |
wim | 15:b70ebfffb258 | 426 | // write the new data to the SPI portexpander |
wim | 14:0c32b66b14b8 | 427 | _setCS(false); |
wim | 14:0c32b66b14b8 | 428 | _spi->write(_lcd_bus); |
wim | 14:0c32b66b14b8 | 429 | _setCS(true); |
wim | 14:0c32b66b14b8 | 430 | |
wim | 13:24506ba22480 | 431 | break; |
wim | 13:24506ba22480 | 432 | } |
wim | 13:24506ba22480 | 433 | } |
wim | 13:24506ba22480 | 434 | |
wim | 16:c276b75e6585 | 435 | // Set RS pin |
wim | 16:c276b75e6585 | 436 | // Used for mbed pins, I2C bus expander or SPI shifregister |
wim | 13:24506ba22480 | 437 | void TextLCD::_setRS(bool value) { |
wim | 13:24506ba22480 | 438 | |
wim | 13:24506ba22480 | 439 | switch(_busType) { |
wim | 13:24506ba22480 | 440 | case _PinBus : |
wim | 13:24506ba22480 | 441 | if (value) |
wim | 13:24506ba22480 | 442 | _rs = 1; // Set RS bit |
wim | 13:24506ba22480 | 443 | else |
wim | 13:24506ba22480 | 444 | _rs = 0; // Reset RS bit |
wim | 13:24506ba22480 | 445 | |
wim | 13:24506ba22480 | 446 | break; |
wim | 13:24506ba22480 | 447 | |
wim | 13:24506ba22480 | 448 | case _I2CBus : |
wim | 14:0c32b66b14b8 | 449 | if (value) |
wim | 14:0c32b66b14b8 | 450 | _lcd_bus |= D_LCD_RS; // Set RS bit |
wim | 14:0c32b66b14b8 | 451 | else |
wim | 14:0c32b66b14b8 | 452 | _lcd_bus &= ~D_LCD_RS; // Reset RS bit |
wim | 13:24506ba22480 | 453 | |
wim | 15:b70ebfffb258 | 454 | // write the new data to the I2C portexpander |
wim | 14:0c32b66b14b8 | 455 | _i2c->write(_slaveAddress, &_lcd_bus, 1); |
wim | 13:24506ba22480 | 456 | |
wim | 13:24506ba22480 | 457 | break; |
wim | 13:24506ba22480 | 458 | |
wim | 13:24506ba22480 | 459 | case _SPIBus : |
wim | 14:0c32b66b14b8 | 460 | if (value) |
wim | 14:0c32b66b14b8 | 461 | _lcd_bus |= D_LCD_RS; // Set RS bit |
wim | 14:0c32b66b14b8 | 462 | else |
wim | 14:0c32b66b14b8 | 463 | _lcd_bus &= ~D_LCD_RS; // Reset RS bit |
wim | 14:0c32b66b14b8 | 464 | |
wim | 15:b70ebfffb258 | 465 | // write the new data to the SPI portexpander |
wim | 14:0c32b66b14b8 | 466 | _setCS(false); |
wim | 14:0c32b66b14b8 | 467 | _spi->write(_lcd_bus); |
wim | 14:0c32b66b14b8 | 468 | _setCS(true); |
wim | 14:0c32b66b14b8 | 469 | |
wim | 13:24506ba22480 | 470 | break; |
wim | 13:24506ba22480 | 471 | } |
wim | 13:24506ba22480 | 472 | |
wim | 13:24506ba22480 | 473 | } |
wim | 13:24506ba22480 | 474 | |
wim | 16:c276b75e6585 | 475 | // Place the 4bit data on the databus |
wim | 16:c276b75e6585 | 476 | // Used for mbed pins, I2C bus expander or SPI shifregister |
wim | 13:24506ba22480 | 477 | void TextLCD::_setData(int value) { |
wim | 13:24506ba22480 | 478 | int data; |
wim | 13:24506ba22480 | 479 | |
wim | 13:24506ba22480 | 480 | switch(_busType) { |
wim | 13:24506ba22480 | 481 | case _PinBus : |
wim | 13:24506ba22480 | 482 | _d = value & 0x0F; // Write Databits |
wim | 13:24506ba22480 | 483 | |
wim | 13:24506ba22480 | 484 | break; |
wim | 13:24506ba22480 | 485 | |
wim | 13:24506ba22480 | 486 | case _I2CBus : |
wim | 13:24506ba22480 | 487 | data = value & 0x0F; |
wim | 13:24506ba22480 | 488 | if (data & 0x01) |
wim | 13:24506ba22480 | 489 | _lcd_bus |= D_LCD_D4; // Set Databit |
wim | 13:24506ba22480 | 490 | else |
wim | 13:24506ba22480 | 491 | _lcd_bus &= ~D_LCD_D4; // Reset Databit |
wim | 13:24506ba22480 | 492 | |
wim | 13:24506ba22480 | 493 | if (data & 0x02) |
wim | 13:24506ba22480 | 494 | _lcd_bus |= D_LCD_D5; // Set Databit |
wim | 13:24506ba22480 | 495 | else |
wim | 13:24506ba22480 | 496 | _lcd_bus &= ~D_LCD_D5; // Reset Databit |
wim | 13:24506ba22480 | 497 | |
wim | 13:24506ba22480 | 498 | if (data & 0x04) |
wim | 13:24506ba22480 | 499 | _lcd_bus |= D_LCD_D6; // Set Databit |
wim | 13:24506ba22480 | 500 | else |
wim | 13:24506ba22480 | 501 | _lcd_bus &= ~D_LCD_D6; // Reset Databit |
wim | 13:24506ba22480 | 502 | |
wim | 13:24506ba22480 | 503 | if (data & 0x08) |
wim | 13:24506ba22480 | 504 | _lcd_bus |= D_LCD_D7; // Set Databit |
wim | 13:24506ba22480 | 505 | else |
wim | 13:24506ba22480 | 506 | _lcd_bus &= ~D_LCD_D7; // Reset Databit |
wim | 13:24506ba22480 | 507 | |
wim | 15:b70ebfffb258 | 508 | // write the new data to the I2C portexpander |
wim | 13:24506ba22480 | 509 | _i2c->write(_slaveAddress, &_lcd_bus, 1); |
wim | 13:24506ba22480 | 510 | |
wim | 13:24506ba22480 | 511 | break; |
wim | 13:24506ba22480 | 512 | |
wim | 13:24506ba22480 | 513 | case _SPIBus : |
wim | 14:0c32b66b14b8 | 514 | |
wim | 14:0c32b66b14b8 | 515 | data = value & 0x0F; |
wim | 14:0c32b66b14b8 | 516 | if (data & 0x01) |
wim | 14:0c32b66b14b8 | 517 | _lcd_bus |= D_LCD_D4; // Set Databit |
wim | 14:0c32b66b14b8 | 518 | else |
wim | 14:0c32b66b14b8 | 519 | _lcd_bus &= ~D_LCD_D4; // Reset Databit |
wim | 14:0c32b66b14b8 | 520 | |
wim | 14:0c32b66b14b8 | 521 | if (data & 0x02) |
wim | 14:0c32b66b14b8 | 522 | _lcd_bus |= D_LCD_D5; // Set Databit |
wim | 14:0c32b66b14b8 | 523 | else |
wim | 14:0c32b66b14b8 | 524 | _lcd_bus &= ~D_LCD_D5; // Reset Databit |
wim | 14:0c32b66b14b8 | 525 | |
wim | 14:0c32b66b14b8 | 526 | if (data & 0x04) |
wim | 14:0c32b66b14b8 | 527 | _lcd_bus |= D_LCD_D6; // Set Databit |
wim | 14:0c32b66b14b8 | 528 | else |
wim | 14:0c32b66b14b8 | 529 | _lcd_bus &= ~D_LCD_D6; // Reset Databit |
wim | 14:0c32b66b14b8 | 530 | |
wim | 14:0c32b66b14b8 | 531 | if (data & 0x08) |
wim | 14:0c32b66b14b8 | 532 | _lcd_bus |= D_LCD_D7; // Set Databit |
wim | 14:0c32b66b14b8 | 533 | else |
wim | 14:0c32b66b14b8 | 534 | _lcd_bus &= ~D_LCD_D7; // Reset Databit |
wim | 14:0c32b66b14b8 | 535 | |
wim | 15:b70ebfffb258 | 536 | // write the new data to the SPI portexpander |
wim | 14:0c32b66b14b8 | 537 | _setCS(false); |
wim | 14:0c32b66b14b8 | 538 | _spi->write(_lcd_bus); |
wim | 14:0c32b66b14b8 | 539 | _setCS(true); |
wim | 14:0c32b66b14b8 | 540 | |
wim | 14:0c32b66b14b8 | 541 | break; |
wim | 13:24506ba22480 | 542 | } |
wim | 13:24506ba22480 | 543 | |
wim | 13:24506ba22480 | 544 | } |
wim | 13:24506ba22480 | 545 | |
wim | 13:24506ba22480 | 546 | |
wim | 16:c276b75e6585 | 547 | // Set CS line. |
wim | 16:c276b75e6585 | 548 | // Only used for SPI bus |
wim | 14:0c32b66b14b8 | 549 | void TextLCD::_setCS(bool value) { |
wim | 14:0c32b66b14b8 | 550 | |
wim | 15:b70ebfffb258 | 551 | if (value) { |
wim | 14:0c32b66b14b8 | 552 | _cs = 1; // Set CS pin |
wim | 15:b70ebfffb258 | 553 | } |
wim | 14:0c32b66b14b8 | 554 | else |
wim | 14:0c32b66b14b8 | 555 | _cs = 0; // Reset CS pin |
wim | 15:b70ebfffb258 | 556 | |
wim | 14:0c32b66b14b8 | 557 | } |
wim | 14:0c32b66b14b8 | 558 | |
wim | 14:0c32b66b14b8 | 559 | |
wim | 17:652ab113bc2e | 560 | // Write a nibble using the 4-bit interface |
wim | 17:652ab113bc2e | 561 | // Used for mbed pins, I2C bus expander or SPI shifregister |
wim | 17:652ab113bc2e | 562 | void TextLCD::_writeNibble(int value) { |
wim | 17:652ab113bc2e | 563 | |
wim | 17:652ab113bc2e | 564 | // Enable is Low |
wim | 17:652ab113bc2e | 565 | _setEnable(true); |
wim | 17:652ab113bc2e | 566 | _setData(value & 0x0F); // Low nibble |
wim | 17:652ab113bc2e | 567 | wait_us(1); // Data setup time |
wim | 17:652ab113bc2e | 568 | _setEnable(false); |
wim | 17:652ab113bc2e | 569 | wait_us(1); // Datahold time |
wim | 17:652ab113bc2e | 570 | |
wim | 17:652ab113bc2e | 571 | // Enable is Low |
wim | 17:652ab113bc2e | 572 | |
wim | 17:652ab113bc2e | 573 | } |
wim | 17:652ab113bc2e | 574 | |
wim | 17:652ab113bc2e | 575 | |
wim | 16:c276b75e6585 | 576 | // Write a byte using the 4-bit interface |
wim | 16:c276b75e6585 | 577 | // Used for mbed pins, I2C bus expander or SPI shifregister |
wim | 13:24506ba22480 | 578 | void TextLCD::_writeByte(int value) { |
wim | 15:b70ebfffb258 | 579 | |
wim | 15:b70ebfffb258 | 580 | // Enable is Low |
wim | 15:b70ebfffb258 | 581 | _setEnable(true); |
wim | 16:c276b75e6585 | 582 | _setData(value >> 4); // High nibble |
wim | 15:b70ebfffb258 | 583 | wait_us(1); // Data setup time |
wim | 15:b70ebfffb258 | 584 | _setEnable(false); |
wim | 15:b70ebfffb258 | 585 | wait_us(1); // Data hold time |
wim | 15:b70ebfffb258 | 586 | |
wim | 13:24506ba22480 | 587 | _setEnable(true); |
wim | 16:c276b75e6585 | 588 | _setData(value >> 0); // Low nibble |
wim | 15:b70ebfffb258 | 589 | wait_us(1); // Data setup time |
wim | 13:24506ba22480 | 590 | _setEnable(false); |
wim | 15:b70ebfffb258 | 591 | wait_us(1); // Datahold time |
wim | 15:b70ebfffb258 | 592 | |
wim | 15:b70ebfffb258 | 593 | // Enable is Low |
wim | 15:b70ebfffb258 | 594 | |
simon | 1:ac48b187213c | 595 | } |
simon | 1:ac48b187213c | 596 | |
wim | 13:24506ba22480 | 597 | void TextLCD::_writeCommand(int command) { |
wim | 15:b70ebfffb258 | 598 | |
wim | 13:24506ba22480 | 599 | _setRS(false); |
wim | 16:c276b75e6585 | 600 | wait_us(1); // Data setup time for RS |
wim | 15:b70ebfffb258 | 601 | |
wim | 15:b70ebfffb258 | 602 | _writeByte(command); |
wim | 15:b70ebfffb258 | 603 | wait_us(40); // most instructions take 40us |
simon | 1:ac48b187213c | 604 | } |
simon | 1:ac48b187213c | 605 | |
wim | 13:24506ba22480 | 606 | void TextLCD::_writeData(int data) { |
wim | 15:b70ebfffb258 | 607 | |
wim | 13:24506ba22480 | 608 | _setRS(true); |
wim | 16:c276b75e6585 | 609 | wait_us(1); // Data setup time for RS |
wim | 15:b70ebfffb258 | 610 | |
wim | 13:24506ba22480 | 611 | _writeByte(data); |
wim | 15:b70ebfffb258 | 612 | wait_us(40); // data writes take 40us |
simon | 1:ac48b187213c | 613 | } |
simon | 1:ac48b187213c | 614 | |
wim | 8:03116f75b66e | 615 | |
wim | 8:03116f75b66e | 616 | #if (0) |
wim | 16:c276b75e6585 | 617 | // This is the original _address() method. |
wim | 8:03116f75b66e | 618 | // It is confusing since it returns the memoryaddress or-ed with the set memorycommand 0x80. |
wim | 8:03116f75b66e | 619 | // Left it in here for compatibility with older code. New applications should use getAddress() instead. |
wim | 8:03116f75b66e | 620 | // |
wim | 13:24506ba22480 | 621 | int TextLCD::_address(int column, int row) { |
simon | 1:ac48b187213c | 622 | switch (_type) { |
simon | 1:ac48b187213c | 623 | case LCD20x4: |
simon | 1:ac48b187213c | 624 | switch (row) { |
simon | 1:ac48b187213c | 625 | case 0: |
simon | 1:ac48b187213c | 626 | return 0x80 + column; |
simon | 1:ac48b187213c | 627 | case 1: |
simon | 1:ac48b187213c | 628 | return 0xc0 + column; |
simon | 1:ac48b187213c | 629 | case 2: |
simon | 1:ac48b187213c | 630 | return 0x94 + column; |
simon | 1:ac48b187213c | 631 | case 3: |
simon | 1:ac48b187213c | 632 | return 0xd4 + column; |
simon | 1:ac48b187213c | 633 | } |
simon | 1:ac48b187213c | 634 | case LCD16x2B: |
simon | 4:bf5b706f8d32 | 635 | return 0x80 + (row * 40) + column; |
simon | 1:ac48b187213c | 636 | case LCD16x2: |
simon | 1:ac48b187213c | 637 | case LCD20x2: |
simon | 1:ac48b187213c | 638 | default: |
simon | 4:bf5b706f8d32 | 639 | return 0x80 + (row * 0x40) + column; |
simon | 1:ac48b187213c | 640 | } |
simon | 1:ac48b187213c | 641 | } |
wim | 8:03116f75b66e | 642 | #endif |
wim | 8:03116f75b66e | 643 | |
wim | 8:03116f75b66e | 644 | |
wim | 16:c276b75e6585 | 645 | // This replaces the original _address() method. |
wim | 8:03116f75b66e | 646 | // Left it in here for compatibility with older code. New applications should use getAddress() instead. |
wim | 13:24506ba22480 | 647 | int TextLCD::_address(int column, int row) { |
wim | 8:03116f75b66e | 648 | return 0x80 | getAddress(column, row); |
wim | 8:03116f75b66e | 649 | } |
wim | 8:03116f75b66e | 650 | |
wim | 8:03116f75b66e | 651 | // This is new method to return the memory address based on row, column and displaytype. |
wim | 8:03116f75b66e | 652 | // |
wim | 8:03116f75b66e | 653 | int TextLCD::getAddress(int column, int row) { |
wim | 8:03116f75b66e | 654 | |
wim | 8:03116f75b66e | 655 | switch (_type) { |
wim | 8:03116f75b66e | 656 | case LCD8x1: |
wim | 8:03116f75b66e | 657 | return 0x00 + column; |
wim | 18:bd65dc10f27f | 658 | |
wim | 18:bd65dc10f27f | 659 | case LCD8x2B: |
wim | 18:bd65dc10f27f | 660 | // LCD8x2B is a special layout of LCD16x1 |
wim | 18:bd65dc10f27f | 661 | if (row==0) |
wim | 18:bd65dc10f27f | 662 | return 0x00 + column; |
wim | 18:bd65dc10f27f | 663 | else |
wim | 18:bd65dc10f27f | 664 | return 0x08 + column; |
wim | 18:bd65dc10f27f | 665 | |
wim | 18:bd65dc10f27f | 666 | |
wim | 13:24506ba22480 | 667 | case LCD16x1: |
wim | 13:24506ba22480 | 668 | // LCD16x1 is a special layout of LCD8x2 |
wim | 13:24506ba22480 | 669 | if (column<8) |
wim | 13:24506ba22480 | 670 | return 0x00 + column; |
wim | 13:24506ba22480 | 671 | else |
wim | 13:24506ba22480 | 672 | return 0x40 + (column - 8); |
wim | 13:24506ba22480 | 673 | |
wim | 15:b70ebfffb258 | 674 | case LCD12x4: |
wim | 15:b70ebfffb258 | 675 | switch (row) { |
wim | 15:b70ebfffb258 | 676 | case 0: |
wim | 15:b70ebfffb258 | 677 | return 0x00 + column; |
wim | 15:b70ebfffb258 | 678 | case 1: |
wim | 15:b70ebfffb258 | 679 | return 0x40 + column; |
wim | 15:b70ebfffb258 | 680 | case 2: |
wim | 15:b70ebfffb258 | 681 | return 0x0C + column; |
wim | 15:b70ebfffb258 | 682 | case 3: |
wim | 15:b70ebfffb258 | 683 | return 0x4C + column; |
wim | 15:b70ebfffb258 | 684 | } |
wim | 15:b70ebfffb258 | 685 | |
wim | 8:03116f75b66e | 686 | case LCD16x4: |
wim | 8:03116f75b66e | 687 | switch (row) { |
wim | 8:03116f75b66e | 688 | case 0: |
wim | 8:03116f75b66e | 689 | return 0x00 + column; |
wim | 8:03116f75b66e | 690 | case 1: |
wim | 8:03116f75b66e | 691 | return 0x40 + column; |
wim | 8:03116f75b66e | 692 | case 2: |
wim | 8:03116f75b66e | 693 | return 0x10 + column; |
wim | 8:03116f75b66e | 694 | case 3: |
wim | 8:03116f75b66e | 695 | return 0x50 + column; |
wim | 8:03116f75b66e | 696 | } |
wim | 8:03116f75b66e | 697 | |
wim | 8:03116f75b66e | 698 | case LCD20x4: |
wim | 8:03116f75b66e | 699 | switch (row) { |
wim | 8:03116f75b66e | 700 | case 0: |
wim | 8:03116f75b66e | 701 | return 0x00 + column; |
wim | 8:03116f75b66e | 702 | case 1: |
wim | 8:03116f75b66e | 703 | return 0x40 + column; |
wim | 8:03116f75b66e | 704 | case 2: |
wim | 8:03116f75b66e | 705 | return 0x14 + column; |
wim | 8:03116f75b66e | 706 | case 3: |
wim | 8:03116f75b66e | 707 | return 0x54 + column; |
wim | 8:03116f75b66e | 708 | } |
wim | 8:03116f75b66e | 709 | |
wim | 10:dd9b3a696acd | 710 | // Special mode for KS0078 |
wim | 10:dd9b3a696acd | 711 | case LCD24x4: |
wim | 10:dd9b3a696acd | 712 | switch (row) { |
wim | 10:dd9b3a696acd | 713 | case 0: |
wim | 10:dd9b3a696acd | 714 | return 0x00 + column; |
wim | 10:dd9b3a696acd | 715 | case 1: |
wim | 10:dd9b3a696acd | 716 | return 0x20 + column; |
wim | 10:dd9b3a696acd | 717 | case 2: |
wim | 10:dd9b3a696acd | 718 | return 0x40 + column; |
wim | 10:dd9b3a696acd | 719 | case 3: |
wim | 10:dd9b3a696acd | 720 | return 0x60 + column; |
wim | 10:dd9b3a696acd | 721 | } |
wim | 10:dd9b3a696acd | 722 | |
wim | 8:03116f75b66e | 723 | // Not sure about this one, seems wrong. |
wim | 8:03116f75b66e | 724 | case LCD16x2B: |
wim | 8:03116f75b66e | 725 | return 0x00 + (row * 40) + column; |
wim | 8:03116f75b66e | 726 | |
wim | 18:bd65dc10f27f | 727 | case LCD8x2: |
wim | 15:b70ebfffb258 | 728 | case LCD12x2: |
wim | 8:03116f75b66e | 729 | case LCD16x2: |
wim | 8:03116f75b66e | 730 | case LCD20x2: |
wim | 8:03116f75b66e | 731 | case LCD24x2: |
wim | 9:0893d986e717 | 732 | case LCD40x2: |
wim | 8:03116f75b66e | 733 | return 0x00 + (row * 0x40) + column; |
wim | 15:b70ebfffb258 | 734 | |
wim | 15:b70ebfffb258 | 735 | case LCD40x4: |
wim | 15:b70ebfffb258 | 736 | // LCD40x4 is a special case since it has 2 controllers |
wim | 15:b70ebfffb258 | 737 | // Each controller is configured as 40x2 |
wim | 15:b70ebfffb258 | 738 | if (row<2) { |
wim | 15:b70ebfffb258 | 739 | // Test to see if we need to switch between controllers |
wim | 19:c747b9e2e7b8 | 740 | if (_ctrl_idx != _LCDCtrl_0) { |
wim | 17:652ab113bc2e | 741 | |
wim | 15:b70ebfffb258 | 742 | // Second LCD controller Cursor Off |
wim | 17:652ab113bc2e | 743 | _setCursorAndDisplayMode(_currentMode, TextLCD::CurOff_BlkOff); |
wim | 15:b70ebfffb258 | 744 | |
wim | 15:b70ebfffb258 | 745 | // Select primary controller |
wim | 19:c747b9e2e7b8 | 746 | _ctrl_idx = _LCDCtrl_0; |
wim | 15:b70ebfffb258 | 747 | |
wim | 15:b70ebfffb258 | 748 | // Restore cursormode on primary LCD controller |
wim | 17:652ab113bc2e | 749 | _setCursorAndDisplayMode(_currentMode, _currentCursor); |
wim | 15:b70ebfffb258 | 750 | } |
wim | 15:b70ebfffb258 | 751 | |
wim | 15:b70ebfffb258 | 752 | return 0x00 + (row * 0x40) + column; |
wim | 15:b70ebfffb258 | 753 | } |
wim | 15:b70ebfffb258 | 754 | else { |
wim | 15:b70ebfffb258 | 755 | |
wim | 15:b70ebfffb258 | 756 | // Test to see if we need to switch between controllers |
wim | 19:c747b9e2e7b8 | 757 | if (_ctrl_idx != _LCDCtrl_1) { |
wim | 15:b70ebfffb258 | 758 | // Primary LCD controller Cursor Off |
wim | 17:652ab113bc2e | 759 | _setCursorAndDisplayMode(_currentMode, TextLCD::CurOff_BlkOff); |
wim | 15:b70ebfffb258 | 760 | |
wim | 15:b70ebfffb258 | 761 | // Select secondary controller |
wim | 19:c747b9e2e7b8 | 762 | _ctrl_idx = _LCDCtrl_1; |
wim | 15:b70ebfffb258 | 763 | |
wim | 15:b70ebfffb258 | 764 | // Restore cursormode on secondary LCD controller |
wim | 17:652ab113bc2e | 765 | _setCursorAndDisplayMode(_currentMode, _currentCursor); |
wim | 15:b70ebfffb258 | 766 | } |
wim | 15:b70ebfffb258 | 767 | |
wim | 15:b70ebfffb258 | 768 | return 0x00 + ((row-2) * 0x40) + column; |
wim | 15:b70ebfffb258 | 769 | } |
wim | 8:03116f75b66e | 770 | |
wim | 8:03116f75b66e | 771 | // Should never get here. |
wim | 8:03116f75b66e | 772 | default: |
wim | 8:03116f75b66e | 773 | return 0x00; |
wim | 8:03116f75b66e | 774 | } |
wim | 8:03116f75b66e | 775 | } |
wim | 8:03116f75b66e | 776 | |
wim | 8:03116f75b66e | 777 | |
wim | 15:b70ebfffb258 | 778 | // Set row, column and update memoryaddress. |
wim | 8:03116f75b66e | 779 | // |
wim | 8:03116f75b66e | 780 | void TextLCD::setAddress(int column, int row) { |
wim | 15:b70ebfffb258 | 781 | |
wim | 15:b70ebfffb258 | 782 | // Sanity Check column |
wim | 15:b70ebfffb258 | 783 | if (column < 0) { |
wim | 15:b70ebfffb258 | 784 | _column = 0; |
wim | 15:b70ebfffb258 | 785 | } |
wim | 15:b70ebfffb258 | 786 | else if (column >= columns()) { |
wim | 15:b70ebfffb258 | 787 | _column = columns() - 1; |
wim | 15:b70ebfffb258 | 788 | } else _column = column; |
wim | 8:03116f75b66e | 789 | |
wim | 15:b70ebfffb258 | 790 | // Sanity Check row |
wim | 15:b70ebfffb258 | 791 | if (row < 0) { |
wim | 15:b70ebfffb258 | 792 | _row = 0; |
wim | 15:b70ebfffb258 | 793 | } |
wim | 15:b70ebfffb258 | 794 | else if (row >= rows()) { |
wim | 15:b70ebfffb258 | 795 | _row = rows() - 1; |
wim | 15:b70ebfffb258 | 796 | } else _row = row; |
wim | 15:b70ebfffb258 | 797 | |
wim | 15:b70ebfffb258 | 798 | |
wim | 15:b70ebfffb258 | 799 | // Compute the memory address |
wim | 15:b70ebfffb258 | 800 | // For LCD40x4: switch controllers if needed |
wim | 15:b70ebfffb258 | 801 | // switch cursor if needed |
wim | 15:b70ebfffb258 | 802 | int addr = getAddress(_column, _row); |
wim | 8:03116f75b66e | 803 | |
wim | 13:24506ba22480 | 804 | _writeCommand(0x80 | addr); |
wim | 8:03116f75b66e | 805 | } |
simon | 1:ac48b187213c | 806 | |
simon | 1:ac48b187213c | 807 | int TextLCD::columns() { |
simon | 1:ac48b187213c | 808 | switch (_type) { |
wim | 8:03116f75b66e | 809 | case LCD8x1: |
wim | 8:03116f75b66e | 810 | case LCD8x2: |
wim | 18:bd65dc10f27f | 811 | case LCD8x2B: |
wim | 8:03116f75b66e | 812 | return 8; |
wim | 15:b70ebfffb258 | 813 | |
wim | 15:b70ebfffb258 | 814 | case LCD12x2: |
wim | 15:b70ebfffb258 | 815 | case LCD12x4: |
wim | 15:b70ebfffb258 | 816 | return 12; |
wim | 8:03116f75b66e | 817 | |
wim | 13:24506ba22480 | 818 | case LCD16x1: |
simon | 1:ac48b187213c | 819 | case LCD16x2: |
simon | 1:ac48b187213c | 820 | case LCD16x2B: |
wim | 8:03116f75b66e | 821 | case LCD16x4: |
wim | 8:03116f75b66e | 822 | return 16; |
wim | 8:03116f75b66e | 823 | |
wim | 8:03116f75b66e | 824 | case LCD20x2: |
wim | 8:03116f75b66e | 825 | case LCD20x4: |
wim | 8:03116f75b66e | 826 | return 20; |
wim | 8:03116f75b66e | 827 | |
wim | 8:03116f75b66e | 828 | case LCD24x2: |
wim | 10:dd9b3a696acd | 829 | case LCD24x4: |
wim | 8:03116f75b66e | 830 | return 24; |
wim | 9:0893d986e717 | 831 | |
wim | 9:0893d986e717 | 832 | case LCD40x2: |
wim | 15:b70ebfffb258 | 833 | case LCD40x4: |
wim | 9:0893d986e717 | 834 | return 40; |
wim | 8:03116f75b66e | 835 | |
wim | 8:03116f75b66e | 836 | // Should never get here. |
simon | 1:ac48b187213c | 837 | default: |
wim | 8:03116f75b66e | 838 | return 0; |
simon | 1:ac48b187213c | 839 | } |
simon | 1:ac48b187213c | 840 | } |
simon | 1:ac48b187213c | 841 | |
simon | 1:ac48b187213c | 842 | int TextLCD::rows() { |
simon | 1:ac48b187213c | 843 | switch (_type) { |
wim | 8:03116f75b66e | 844 | case LCD8x1: |
wim | 13:24506ba22480 | 845 | case LCD16x1: |
wim | 8:03116f75b66e | 846 | return 1; |
wim | 8:03116f75b66e | 847 | |
wim | 15:b70ebfffb258 | 848 | case LCD8x2: |
wim | 18:bd65dc10f27f | 849 | case LCD8x2B: |
wim | 15:b70ebfffb258 | 850 | case LCD12x2: |
simon | 1:ac48b187213c | 851 | case LCD16x2: |
simon | 1:ac48b187213c | 852 | case LCD16x2B: |
simon | 1:ac48b187213c | 853 | case LCD20x2: |
wim | 8:03116f75b66e | 854 | case LCD24x2: |
wim | 9:0893d986e717 | 855 | case LCD40x2: |
wim | 8:03116f75b66e | 856 | return 2; |
wim | 8:03116f75b66e | 857 | |
wim | 15:b70ebfffb258 | 858 | case LCD12x4: |
wim | 8:03116f75b66e | 859 | case LCD16x4: |
wim | 8:03116f75b66e | 860 | case LCD20x4: |
wim | 10:dd9b3a696acd | 861 | case LCD24x4: |
wim | 15:b70ebfffb258 | 862 | case LCD40x4: |
wim | 8:03116f75b66e | 863 | return 4; |
wim | 12:6bf9d9957d31 | 864 | |
wim | 12:6bf9d9957d31 | 865 | // Should never get here. |
simon | 1:ac48b187213c | 866 | default: |
wim | 8:03116f75b66e | 867 | return 0; |
simon | 1:ac48b187213c | 868 | } |
simon | 1:ac48b187213c | 869 | } |
wim | 10:dd9b3a696acd | 870 | |
wim | 10:dd9b3a696acd | 871 | |
wim | 17:652ab113bc2e | 872 | // Set the Cursor Mode (Cursor Off & Blink Off, Cursor On & Blink Off, Cursor Off & Blink On, Cursor On & Blink On |
wim | 17:652ab113bc2e | 873 | void TextLCD::setCursor(TextLCD::LCDCursor cursorMode) { |
wim | 15:b70ebfffb258 | 874 | |
wim | 17:652ab113bc2e | 875 | // Save new cursor mode, needed when 2 controllers are in use or when display is switched off/on |
wim | 17:652ab113bc2e | 876 | _currentCursor = cursorMode; |
wim | 10:dd9b3a696acd | 877 | |
wim | 17:652ab113bc2e | 878 | // Configure only current LCD controller |
wim | 17:652ab113bc2e | 879 | _setCursorAndDisplayMode(_currentMode, _currentCursor); |
wim | 15:b70ebfffb258 | 880 | |
wim | 15:b70ebfffb258 | 881 | } |
wim | 15:b70ebfffb258 | 882 | |
wim | 17:652ab113bc2e | 883 | // Set the Displaymode (On/Off) |
wim | 17:652ab113bc2e | 884 | void TextLCD::setMode(TextLCD::LCDMode displayMode) { |
wim | 17:652ab113bc2e | 885 | |
wim | 17:652ab113bc2e | 886 | // Save new displayMode, needed when 2 controllers are in use or when cursor is changed |
wim | 17:652ab113bc2e | 887 | _currentMode = displayMode; |
wim | 15:b70ebfffb258 | 888 | |
wim | 17:652ab113bc2e | 889 | // Select and configure second LCD controller when needed |
wim | 17:652ab113bc2e | 890 | if(_type==LCD40x4) { |
wim | 19:c747b9e2e7b8 | 891 | if (_ctrl_idx==TextLCD::_LCDCtrl_0) { |
wim | 17:652ab113bc2e | 892 | // Configure primary LCD controller |
wim | 17:652ab113bc2e | 893 | _setCursorAndDisplayMode(_currentMode, _currentCursor); |
wim | 11:9ec02df863a1 | 894 | |
wim | 17:652ab113bc2e | 895 | // Select 2nd controller |
wim | 19:c747b9e2e7b8 | 896 | _ctrl_idx=TextLCD::_LCDCtrl_1; |
wim | 17:652ab113bc2e | 897 | |
wim | 17:652ab113bc2e | 898 | // Configure secondary LCD controller |
wim | 17:652ab113bc2e | 899 | _setCursorAndDisplayMode(_currentMode, TextLCD::CurOff_BlkOff); |
wim | 11:9ec02df863a1 | 900 | |
wim | 17:652ab113bc2e | 901 | // Restore current controller |
wim | 19:c747b9e2e7b8 | 902 | _ctrl_idx=TextLCD::_LCDCtrl_0; |
wim | 17:652ab113bc2e | 903 | } |
wim | 17:652ab113bc2e | 904 | else { |
wim | 17:652ab113bc2e | 905 | // Select primary controller |
wim | 19:c747b9e2e7b8 | 906 | _ctrl_idx=TextLCD::_LCDCtrl_0; |
wim | 17:652ab113bc2e | 907 | |
wim | 17:652ab113bc2e | 908 | // Configure primary LCD controller |
wim | 17:652ab113bc2e | 909 | _setCursorAndDisplayMode(_currentMode, TextLCD::CurOff_BlkOff); |
wim | 17:652ab113bc2e | 910 | |
wim | 17:652ab113bc2e | 911 | // Restore current controller |
wim | 19:c747b9e2e7b8 | 912 | _ctrl_idx=TextLCD::_LCDCtrl_1; |
wim | 11:9ec02df863a1 | 913 | |
wim | 17:652ab113bc2e | 914 | // Configure secondary LCD controller |
wim | 17:652ab113bc2e | 915 | _setCursorAndDisplayMode(_currentMode, _currentCursor); |
wim | 11:9ec02df863a1 | 916 | |
wim | 10:dd9b3a696acd | 917 | } |
wim | 17:652ab113bc2e | 918 | } |
wim | 17:652ab113bc2e | 919 | else { |
wim | 17:652ab113bc2e | 920 | // Configure primary LCD controller |
wim | 17:652ab113bc2e | 921 | _setCursorAndDisplayMode(_currentMode, _currentCursor); |
wim | 17:652ab113bc2e | 922 | } |
wim | 17:652ab113bc2e | 923 | |
wim | 17:652ab113bc2e | 924 | } |
wim | 17:652ab113bc2e | 925 | |
wim | 17:652ab113bc2e | 926 | |
wim | 17:652ab113bc2e | 927 | // Set the Displaymode (On/Off) and Cursortype for current controller |
wim | 17:652ab113bc2e | 928 | void TextLCD::_setCursorAndDisplayMode(TextLCD::LCDMode displayMode, TextLCD::LCDCursor cursorType) { |
wim | 17:652ab113bc2e | 929 | |
wim | 17:652ab113bc2e | 930 | // Configure current LCD controller |
wim | 17:652ab113bc2e | 931 | _writeCommand(0x08 | displayMode | cursorType); |
wim | 10:dd9b3a696acd | 932 | } |
wim | 10:dd9b3a696acd | 933 | |
wim | 10:dd9b3a696acd | 934 | |
wim | 11:9ec02df863a1 | 935 | void TextLCD::setUDC(unsigned char c, char *udc_data) { |
wim | 15:b70ebfffb258 | 936 | |
wim | 15:b70ebfffb258 | 937 | // Select and configure second LCD controller when needed |
wim | 15:b70ebfffb258 | 938 | if(_type==LCD40x4) { |
wim | 19:c747b9e2e7b8 | 939 | _LCDCtrl_Idx current_ctrl_idx = _ctrl_idx; // Temp save current controller |
wim | 15:b70ebfffb258 | 940 | |
wim | 15:b70ebfffb258 | 941 | // Select primary controller |
wim | 19:c747b9e2e7b8 | 942 | _ctrl_idx=TextLCD::_LCDCtrl_0; |
wim | 15:b70ebfffb258 | 943 | |
wim | 15:b70ebfffb258 | 944 | // Configure primary LCD controller |
wim | 15:b70ebfffb258 | 945 | _setUDC(c, udc_data); |
wim | 15:b70ebfffb258 | 946 | |
wim | 15:b70ebfffb258 | 947 | // Select 2nd controller |
wim | 19:c747b9e2e7b8 | 948 | _ctrl_idx=TextLCD::_LCDCtrl_1; |
wim | 15:b70ebfffb258 | 949 | |
wim | 15:b70ebfffb258 | 950 | // Configure secondary LCD controller |
wim | 15:b70ebfffb258 | 951 | _setUDC(c, udc_data); |
wim | 11:9ec02df863a1 | 952 | |
wim | 15:b70ebfffb258 | 953 | // Restore current controller |
wim | 19:c747b9e2e7b8 | 954 | _ctrl_idx=current_ctrl_idx; |
wim | 15:b70ebfffb258 | 955 | } |
wim | 15:b70ebfffb258 | 956 | else { |
wim | 15:b70ebfffb258 | 957 | // Configure primary LCD controller |
wim | 15:b70ebfffb258 | 958 | _setUDC(c, udc_data); |
wim | 15:b70ebfffb258 | 959 | } |
wim | 15:b70ebfffb258 | 960 | |
wim | 15:b70ebfffb258 | 961 | } |
wim | 15:b70ebfffb258 | 962 | |
wim | 15:b70ebfffb258 | 963 | void TextLCD::_setUDC(unsigned char c, char *udc_data) { |
wim | 15:b70ebfffb258 | 964 | |
wim | 15:b70ebfffb258 | 965 | // Select CG RAM for current LCD controller |
wim | 15:b70ebfffb258 | 966 | _writeCommand(0x40 + ((c & 0x07) << 3)); //Set CG-RAM address, |
wim | 15:b70ebfffb258 | 967 | //8 sequential locations needed per UDC |
wim | 15:b70ebfffb258 | 968 | // Store UDC pattern |
wim | 11:9ec02df863a1 | 969 | for (int i=0; i<8; i++) { |
wim | 13:24506ba22480 | 970 | _writeData(*udc_data++); |
wim | 11:9ec02df863a1 | 971 | } |
wim | 15:b70ebfffb258 | 972 | |
wim | 15:b70ebfffb258 | 973 | //Select DD RAM again for current LCD controller |
wim | 15:b70ebfffb258 | 974 | int addr = getAddress(_column, _row); |
wim | 15:b70ebfffb258 | 975 | _writeCommand(0x80 | addr); |
wim | 15:b70ebfffb258 | 976 | |
wim | 11:9ec02df863a1 | 977 | } |