Few Change
TextLCD.cpp@27:22d5086f6ba6, 2014-06-13 (annotated)
- Committer:
- wim
- Date:
- Fri Jun 13 19:02:26 2014 +0000
- Revision:
- 27:22d5086f6ba6
- Parent:
- 26:bd897a001012
- Child:
- 28:30fa94f7341c
First test of native SPI
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 |
wim | 20:e0da005a777f | 9 | * 2013, v07: WH, Added support for backlight and include portdefinitions for LCD2004 Module from DFROBOT |
wim | 22:35742ec80c24 | 10 | * 2014, v08: WH, Refactored in Base and Derived Classes to deal with mbed lib change regarding 'NC' defined pins |
wim | 25:6162b31128c9 | 11 | * 2014, v09: WH/EO, Added Class for Native SPI controllers such as ST7032 |
wim | 26:bd897a001012 | 12 | * 2014, v10: WH, Added Class for Native I2C controllers such as ST7032i, Added support for MCP23008 I2C portexpander, Added support for Adafruit module |
simon | 1:ac48b187213c | 13 | * |
simon | 1:ac48b187213c | 14 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
simon | 1:ac48b187213c | 15 | * of this software and associated documentation files (the "Software"), to deal |
simon | 1:ac48b187213c | 16 | * in the Software without restriction, including without limitation the rights |
simon | 1:ac48b187213c | 17 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
simon | 1:ac48b187213c | 18 | * copies of the Software, and to permit persons to whom the Software is |
simon | 1:ac48b187213c | 19 | * furnished to do so, subject to the following conditions: |
simon | 1:ac48b187213c | 20 | * |
simon | 1:ac48b187213c | 21 | * The above copyright notice and this permission notice shall be included in |
simon | 1:ac48b187213c | 22 | * all copies or substantial portions of the Software. |
simon | 1:ac48b187213c | 23 | * |
simon | 1:ac48b187213c | 24 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
simon | 1:ac48b187213c | 25 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
simon | 1:ac48b187213c | 26 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
simon | 1:ac48b187213c | 27 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
simon | 1:ac48b187213c | 28 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
simon | 1:ac48b187213c | 29 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
simon | 1:ac48b187213c | 30 | * THE SOFTWARE. |
simon | 1:ac48b187213c | 31 | */ |
simon | 1:ac48b187213c | 32 | |
simon | 1:ac48b187213c | 33 | #include "TextLCD.h" |
simon | 1:ac48b187213c | 34 | #include "mbed.h" |
simon | 1:ac48b187213c | 35 | |
wim | 21:9eb628d9e164 | 36 | /** Create a TextLCD_Base interface |
wim | 15:b70ebfffb258 | 37 | * |
wim | 21:9eb628d9e164 | 38 | * @param type Sets the panel size/addressing mode (default = LCD16x2) |
wim | 21:9eb628d9e164 | 39 | * @param ctrl LCD controller (default = HD44780) |
wim | 15:b70ebfffb258 | 40 | */ |
wim | 21:9eb628d9e164 | 41 | TextLCD_Base::TextLCD_Base(LCDType type, LCDCtrl ctrl) : _type(type), _ctrl(ctrl) { |
wim | 14:0c32b66b14b8 | 42 | } |
wim | 14:0c32b66b14b8 | 43 | |
wim | 14:0c32b66b14b8 | 44 | |
wim | 21:9eb628d9e164 | 45 | /** Init the LCD Controller(s) |
wim | 21:9eb628d9e164 | 46 | * Clear display |
wim | 21:9eb628d9e164 | 47 | */ |
wim | 21:9eb628d9e164 | 48 | void TextLCD_Base::_init() { |
wim | 15:b70ebfffb258 | 49 | |
wim | 15:b70ebfffb258 | 50 | // Select and configure second LCD controller when needed |
wim | 15:b70ebfffb258 | 51 | if(_type==LCD40x4) { |
wim | 27:22d5086f6ba6 | 52 | _ctrl_idx=_LCDCtrl_1; // Select 2nd controller |
wim | 15:b70ebfffb258 | 53 | |
wim | 27:22d5086f6ba6 | 54 | _initCtrl(); // Init 2nd controller |
wim | 15:b70ebfffb258 | 55 | |
wim | 15:b70ebfffb258 | 56 | // Secondary LCD controller Clearscreen |
wim | 27:22d5086f6ba6 | 57 | _writeCommand(0x01); // cls, and set cursor to 0 |
wim | 15:b70ebfffb258 | 58 | wait_ms(10); // The CLS command takes 1.64 ms. |
wim | 27:22d5086f6ba6 | 59 | // Since we are not using the Busy flag, Lets be safe and take 10 ms |
wim | 15:b70ebfffb258 | 60 | } |
wim | 15:b70ebfffb258 | 61 | |
wim | 15:b70ebfffb258 | 62 | // Select and configure primary LCD controller |
wim | 27:22d5086f6ba6 | 63 | _ctrl_idx=_LCDCtrl_0; // Select primary controller |
wim | 13:24506ba22480 | 64 | |
wim | 19:c747b9e2e7b8 | 65 | _initCtrl(); // Init primary controller |
wim | 15:b70ebfffb258 | 66 | |
wim | 15:b70ebfffb258 | 67 | // Primary LCD controller Clearscreen |
wim | 27:22d5086f6ba6 | 68 | _writeCommand(0x01); // cls, and set cursor to 0 |
wim | 15:b70ebfffb258 | 69 | wait_ms(10); // The CLS command takes 1.64 ms. |
wim | 27:22d5086f6ba6 | 70 | // Since we are not using the Busy flag, Lets be safe and take 10 ms |
wim | 15:b70ebfffb258 | 71 | } |
wim | 15:b70ebfffb258 | 72 | |
wim | 21:9eb628d9e164 | 73 | /** Init the LCD controller |
wim | 21:9eb628d9e164 | 74 | * 4-bit mode, number of lines, fonttype, no cursor etc |
wim | 21:9eb628d9e164 | 75 | * |
wim | 21:9eb628d9e164 | 76 | */ |
wim | 21:9eb628d9e164 | 77 | void TextLCD_Base::_initCtrl() { |
wim | 15:b70ebfffb258 | 78 | |
wim | 26:bd897a001012 | 79 | this->_setRS(false); // command mode |
wim | 13:24506ba22480 | 80 | |
wim | 26:bd897a001012 | 81 | wait_ms(20); // Wait 20ms to ensure powered up |
simon | 1:ac48b187213c | 82 | |
wim | 17:652ab113bc2e | 83 | // send "Display Settings" 3 times (Only top nibble of 0x30 as we've got 4-bit bus) |
wim | 17:652ab113bc2e | 84 | for (int i=0; i<3; i++) { |
wim | 17:652ab113bc2e | 85 | _writeNibble(0x3); |
wim | 20:e0da005a777f | 86 | wait_ms(15); // This command takes 1.64ms, so wait for it |
wim | 17:652ab113bc2e | 87 | } |
wim | 17:652ab113bc2e | 88 | _writeNibble(0x2); // 4-bit mode |
wim | 17:652ab113bc2e | 89 | wait_us(40); // most instructions take 40us |
wim | 18:bd65dc10f27f | 90 | |
wim | 18:bd65dc10f27f | 91 | // Display is now in 4-bit mode |
wim | 27:22d5086f6ba6 | 92 | // Note: 4 bit mode is ignored for native SPI and I2C devices |
wim | 25:6162b31128c9 | 93 | |
wim | 19:c747b9e2e7b8 | 94 | // Device specific initialisations for DC/DC converter to generate VLCD or VLED |
wim | 19:c747b9e2e7b8 | 95 | switch (_ctrl) { |
wim | 20:e0da005a777f | 96 | case ST7036: |
wim | 19:c747b9e2e7b8 | 97 | // ST7036 controller: Initialise Voltage booster for VLCD. VDD=5V |
wim | 19:c747b9e2e7b8 | 98 | // Note: supports 1,2 or 3 lines |
wim | 27:22d5086f6ba6 | 99 | _writeByte( 0x29 ); // 4-bit Databus, 2 Lines, Select Instruction Set = 1 |
wim | 20:e0da005a777f | 100 | wait_ms(30); // > 26,3ms |
wim | 19:c747b9e2e7b8 | 101 | _writeByte( 0x14 ); // Bias: 1/5, 2-Lines LCD |
wim | 20:e0da005a777f | 102 | wait_ms(30); // > 26,3ms |
wim | 19:c747b9e2e7b8 | 103 | _writeByte( 0x55 ); // Icon off, Booster on, Set Contrast C5, C4 |
wim | 20:e0da005a777f | 104 | wait_ms(30); // > 26,3ms |
wim | 27:22d5086f6ba6 | 105 | _writeByte( 0x6D ); // Voltagefollower On, Ampl ratio Rab2, Rab1, Rab0 |
wim | 19:c747b9e2e7b8 | 106 | wait_ms(200); // > 200ms! |
wim | 19:c747b9e2e7b8 | 107 | _writeByte( 0x78 ); // Set Contrast C3, C2, C1, C0 |
wim | 20:e0da005a777f | 108 | wait_ms(30); // > 26,3ms |
wim | 27:22d5086f6ba6 | 109 | _writeByte( 0x28 ); // Return to Instruction Set = 0 |
wim | 25:6162b31128c9 | 110 | wait_ms(50); |
wim | 19:c747b9e2e7b8 | 111 | break; |
wim | 25:6162b31128c9 | 112 | |
wim | 26:bd897a001012 | 113 | case ST7032_3V3: |
wim | 26:bd897a001012 | 114 | // ST7032 controller: Initialise Voltage booster for VLCD. VDD=3V3 |
wim | 27:22d5086f6ba6 | 115 | |
wim | 27:22d5086f6ba6 | 116 | // _writeByte( 0x39 ); //FUNCTION SET 8 bit,N=1 2-line display mode,5*7dot, Select Instruction Set = 1 |
wim | 27:22d5086f6ba6 | 117 | _writeByte( 0x29 ); //FUNCTION SET 4 bit, N=1 2-line display mode, 5*7dot, Select Instruction Set = 1 |
wim | 27:22d5086f6ba6 | 118 | //Note: 4 bit mode is ignored for native SPI and I2C devices |
wim | 27:22d5086f6ba6 | 119 | wait_us(30); |
wim | 27:22d5086f6ba6 | 120 | _writeByte( 0x1C ); //Internal OSC frequency adjustment 183HZ, bias will be 1/4 |
Sissors | 24:fb3399713710 | 121 | wait_us(30); |
wim | 26:bd897a001012 | 122 | _writeByte( 0x73 ); //Contrast control low byte |
Sissors | 24:fb3399713710 | 123 | wait_us(30); |
wim | 26:bd897a001012 | 124 | _writeByte( 0x57 ); //booster circuit is turned on. /ICON display off. /Contrast control high byte |
Sissors | 24:fb3399713710 | 125 | wait_us(30); |
wim | 27:22d5086f6ba6 | 126 | _writeByte( 0x6C ); //Follower control |
Sissors | 24:fb3399713710 | 127 | wait_us(50); |
wim | 27:22d5086f6ba6 | 128 | // _writeByte( 0x0C ); //DISPLAY ON, not needed |
wim | 27:22d5086f6ba6 | 129 | // _writeByte( 0x38 ); //FUNCTION SET 8 bit,N=1 2-line display mode,5*7dot, Return to Instruction Set = 0 |
wim | 27:22d5086f6ba6 | 130 | _writeByte( 0x28 ); //FUNCTION SET 4 bit, N=1 2-line display mode, 5*7dot, Return to Instruction Set = 0 |
wim | 27:22d5086f6ba6 | 131 | //Note: 4 bit mode is ignored for native SPI and I2C devices |
wim | 26:bd897a001012 | 132 | wait_us(30); |
wim | 26:bd897a001012 | 133 | break; |
wim | 26:bd897a001012 | 134 | |
wim | 26:bd897a001012 | 135 | //Check and fix booster disable |
wim | 26:bd897a001012 | 136 | case ST7032_5V: |
wim | 26:bd897a001012 | 137 | // ST7032 controller: Disable Voltage booster for VLCD. VDD=5V |
wim | 27:22d5086f6ba6 | 138 | // _writeByte( 0x39 ); //FUNCTION SET 8 bit,N=1 2-line display mode,5*7dot, Instruction Set = 1 |
wim | 27:22d5086f6ba6 | 139 | _writeByte( 0x29 ); //FUNCTION SET 4 bit, N=1 2-line display mode, 5*7dot, Select Instruction Set = 1 |
wim | 27:22d5086f6ba6 | 140 | //Note: 4 bit mode is ignored for native SPI and I2C devices |
wim | 27:22d5086f6ba6 | 141 | wait_us(30); |
wim | 27:22d5086f6ba6 | 142 | _writeByte( 0x1C ); //Internal OSC frequency adjustment 183HZ, bias will be 1/4 |
wim | 26:bd897a001012 | 143 | wait_us(30); |
wim | 26:bd897a001012 | 144 | _writeByte( 0x73 ); //Contrast control low byte |
wim | 26:bd897a001012 | 145 | wait_us(30); |
wim | 26:bd897a001012 | 146 | _writeByte( 0x57 ); //booster circuit is turned on. /ICON display off. /Contrast control high byte |
wim | 26:bd897a001012 | 147 | wait_us(30); |
wim | 27:22d5086f6ba6 | 148 | _writeByte( 0x6C ); //Follower control |
wim | 26:bd897a001012 | 149 | wait_us(50); |
wim | 27:22d5086f6ba6 | 150 | // _writeByte( 0x0C ); //DISPLAY ON --> remove, done later? |
wim | 27:22d5086f6ba6 | 151 | // _writeByte( 0x38 ); //FUNCTION SET 8 bit,N=1 2-line display mode,5*7dot, Instruction Set = 0 |
wim | 27:22d5086f6ba6 | 152 | _writeByte( 0x28 ); //FUNCTION SET 4 bit, N=1 2-line display mode, 5*7dot, Return to Instruction Set = 0 |
wim | 27:22d5086f6ba6 | 153 | //Note: 4 bit mode is ignored for native SPI and I2C devices |
Sissors | 24:fb3399713710 | 154 | wait_us(30); |
Sissors | 24:fb3399713710 | 155 | break; |
wim | 25:6162b31128c9 | 156 | |
wim | 19:c747b9e2e7b8 | 157 | case WS0010: |
wim | 19:c747b9e2e7b8 | 158 | // WS0010 OLED controller: Initialise DC/DC Voltage converter for LEDs |
wim | 19:c747b9e2e7b8 | 159 | // Note: supports 1 or 2 lines (and 16x100 graphics) |
wim | 19:c747b9e2e7b8 | 160 | // supports 4 fonts (English/Japanese (default), Western European-I, English/Russian, Western European-II) |
wim | 19:c747b9e2e7b8 | 161 | // Cursor/Disp shift set 0001 SC RL 0 0 |
wim | 19:c747b9e2e7b8 | 162 | // |
wim | 19:c747b9e2e7b8 | 163 | // Mode en Power set 0001 GC PWR 1 1 |
wim | 19:c747b9e2e7b8 | 164 | // GC = 0 (Graph Mode=1, Char Mode=0) |
wim | 19:c747b9e2e7b8 | 165 | // PWR = (DC/DC On/Off) |
wim | 19:c747b9e2e7b8 | 166 | |
wim | 25:6162b31128c9 | 167 | //_writeCommand(0x13); // DC/DC off |
wim | 19:c747b9e2e7b8 | 168 | _writeCommand(0x17); // DC/DC on |
wim | 25:6162b31128c9 | 169 | |
wim | 19:c747b9e2e7b8 | 170 | wait_ms(10); |
wim | 19:c747b9e2e7b8 | 171 | break; |
wim | 19:c747b9e2e7b8 | 172 | |
wim | 19:c747b9e2e7b8 | 173 | default: |
wim | 19:c747b9e2e7b8 | 174 | // Devices that do not use DC/DC Voltage converters but external VLCD |
wim | 19:c747b9e2e7b8 | 175 | break; |
wim | 19:c747b9e2e7b8 | 176 | } |
wim | 14:0c32b66b14b8 | 177 | |
wim | 18:bd65dc10f27f | 178 | // Initialise Display configuration |
wim | 10:dd9b3a696acd | 179 | switch (_type) { |
wim | 10:dd9b3a696acd | 180 | case LCD8x1: |
wim | 18:bd65dc10f27f | 181 | case LCD8x2B: |
wim | 18:bd65dc10f27f | 182 | //8x1 is a regular 1 line display |
wim | 18:bd65dc10f27f | 183 | //8x2B is a special case of 16x1 |
wim | 15:b70ebfffb258 | 184 | _writeCommand(0x20); // Function set 001 DL N F - - |
wim | 15:b70ebfffb258 | 185 | // DL=0 (4 bits bus) |
wim | 13:24506ba22480 | 186 | // N=0 (1 line) |
wim | 13:24506ba22480 | 187 | // F=0 (5x7 dots font) |
wim | 10:dd9b3a696acd | 188 | break; |
wim | 10:dd9b3a696acd | 189 | |
wim | 10:dd9b3a696acd | 190 | case LCD24x4: |
wim | 10:dd9b3a696acd | 191 | // Special mode for KS0078 |
wim | 15:b70ebfffb258 | 192 | _writeCommand(0x2A); // Function set 001 DL N RE DH REV |
wim | 15:b70ebfffb258 | 193 | // DL=0 (4 bits bus) |
wim | 13:24506ba22480 | 194 | // N=1 (Dont care for KS0078) |
wim | 13:24506ba22480 | 195 | // RE=0 (Extended Regs, special mode for KS0078) |
wim | 13:24506ba22480 | 196 | // DH=1 (Disp shift, special mode for KS0078) |
wim | 13:24506ba22480 | 197 | // REV=0 (Reverse, special mode for KS0078) |
wim | 10:dd9b3a696acd | 198 | |
wim | 15:b70ebfffb258 | 199 | _writeCommand(0x2E); // Function set 001 DL N RE DH REV |
wim | 15:b70ebfffb258 | 200 | // DL=0 (4 bits bus) |
wim | 13:24506ba22480 | 201 | // N=1 (Dont care for KS0078) |
wim | 13:24506ba22480 | 202 | // RE=1 (Ena Extended Regs, special mode for KS0078) |
wim | 13:24506ba22480 | 203 | // DH=1 (Disp shift, special mode for KS0078) |
wim | 13:24506ba22480 | 204 | // REV=0 (Reverse, special mode for KS0078) |
wim | 10:dd9b3a696acd | 205 | |
wim | 13:24506ba22480 | 206 | _writeCommand(0x09); // Ext Function set 0000 1 FW BW NW |
wim | 13:24506ba22480 | 207 | // FW=0 (5-dot font, special mode for KS0078) |
wim | 13:24506ba22480 | 208 | // BW=0 (Cur BW invert disable, special mode for KS0078) |
wim | 13:24506ba22480 | 209 | // NW=1 (4 Line, special mode for KS0078) |
wim | 10:dd9b3a696acd | 210 | |
wim | 15:b70ebfffb258 | 211 | _writeCommand(0x2A); // Function set 001 DL N RE DH REV |
wim | 15:b70ebfffb258 | 212 | // DL=0 (4 bits bus) |
wim | 13:24506ba22480 | 213 | // N=1 (Dont care for KS0078) |
wim | 13:24506ba22480 | 214 | // RE=0 (Dis. Extended Regs, special mode for KS0078) |
wim | 13:24506ba22480 | 215 | // DH=1 (Disp shift, special mode for KS0078) |
wim | 13:24506ba22480 | 216 | // REV=0 (Reverse, special mode for KS0078) |
wim | 10:dd9b3a696acd | 217 | break; |
wim | 10:dd9b3a696acd | 218 | |
wim | 15:b70ebfffb258 | 219 | // All other LCD types are initialised as 2 Line displays (including LCD40x4) |
wim | 10:dd9b3a696acd | 220 | default: |
wim | 15:b70ebfffb258 | 221 | _writeCommand(0x28); // Function set 001 DL N F - - |
wim | 27:22d5086f6ba6 | 222 | // DL=0 (4 bits bus) |
wim | 27:22d5086f6ba6 | 223 | // Note: 4 bit mode is ignored for native SPI and I2C devices |
wim | 13:24506ba22480 | 224 | // N=1 (2 lines) |
wim | 15:b70ebfffb258 | 225 | // F=0 (5x7 dots font, only option for 2 line display) |
wim | 13:24506ba22480 | 226 | // - (Don't care) |
wim | 10:dd9b3a696acd | 227 | |
wim | 10:dd9b3a696acd | 228 | break; |
wim | 10:dd9b3a696acd | 229 | } |
wim | 10:dd9b3a696acd | 230 | |
wim | 13:24506ba22480 | 231 | _writeCommand(0x06); // Entry Mode 0000 01 CD S |
wim | 13:24506ba22480 | 232 | // Cursor Direction and Display Shift |
wim | 13:24506ba22480 | 233 | // CD=1 (Cur incr) |
wim | 13:24506ba22480 | 234 | // S=0 (No display shift) |
wim | 10:dd9b3a696acd | 235 | |
wim | 13:24506ba22480 | 236 | // _writeCommand(0x0C); // Display Ctrl 0000 1 D C B |
wim | 17:652ab113bc2e | 237 | // // Display On, Cursor Off, Blink Off |
wim | 21:9eb628d9e164 | 238 | setCursor(CurOff_BlkOff); |
wim | 21:9eb628d9e164 | 239 | setMode(DispOn); |
simon | 1:ac48b187213c | 240 | } |
simon | 1:ac48b187213c | 241 | |
wim | 8:03116f75b66e | 242 | |
wim | 21:9eb628d9e164 | 243 | /** Clear the screen, Cursor home. |
wim | 21:9eb628d9e164 | 244 | */ |
wim | 21:9eb628d9e164 | 245 | void TextLCD_Base::cls() { |
wim | 15:b70ebfffb258 | 246 | |
wim | 15:b70ebfffb258 | 247 | // Select and configure second LCD controller when needed |
wim | 15:b70ebfffb258 | 248 | if(_type==LCD40x4) { |
wim | 21:9eb628d9e164 | 249 | _ctrl_idx=_LCDCtrl_1; // Select 2nd controller |
wim | 15:b70ebfffb258 | 250 | |
wim | 15:b70ebfffb258 | 251 | // Second LCD controller Cursor always Off |
wim | 21:9eb628d9e164 | 252 | _setCursorAndDisplayMode(_currentMode, CurOff_BlkOff); |
wim | 15:b70ebfffb258 | 253 | |
wim | 15:b70ebfffb258 | 254 | // Second LCD controller Clearscreen |
wim | 27:22d5086f6ba6 | 255 | _writeCommand(0x01); // cls, and set cursor to 0 |
wim | 15:b70ebfffb258 | 256 | wait_ms(10); // The CLS command takes 1.64 ms. |
wim | 15:b70ebfffb258 | 257 | // Since we are not using the Busy flag, Lets be safe and take 10 ms |
wim | 15:b70ebfffb258 | 258 | |
wim | 15:b70ebfffb258 | 259 | |
wim | 21:9eb628d9e164 | 260 | _ctrl_idx=_LCDCtrl_0; // Select primary controller |
wim | 15:b70ebfffb258 | 261 | } |
wim | 15:b70ebfffb258 | 262 | |
wim | 15:b70ebfffb258 | 263 | // Primary LCD controller Clearscreen |
wim | 27:22d5086f6ba6 | 264 | _writeCommand(0x01); // cls, and set cursor to 0 |
wim | 15:b70ebfffb258 | 265 | wait_ms(10); // The CLS command takes 1.64 ms. |
wim | 15:b70ebfffb258 | 266 | // Since we are not using the Busy flag, Lets be safe and take 10 ms |
wim | 15:b70ebfffb258 | 267 | |
wim | 15:b70ebfffb258 | 268 | // Restore cursormode on primary LCD controller when needed |
wim | 15:b70ebfffb258 | 269 | if(_type==LCD40x4) { |
wim | 17:652ab113bc2e | 270 | _setCursorAndDisplayMode(_currentMode,_currentCursor); |
wim | 15:b70ebfffb258 | 271 | } |
wim | 15:b70ebfffb258 | 272 | |
wim | 15:b70ebfffb258 | 273 | _row=0; // Reset Cursor location |
wim | 15:b70ebfffb258 | 274 | _column=0; |
simon | 1:ac48b187213c | 275 | } |
simon | 1:ac48b187213c | 276 | |
wim | 21:9eb628d9e164 | 277 | /** Move cursor to selected row and column |
wim | 21:9eb628d9e164 | 278 | */ |
wim | 21:9eb628d9e164 | 279 | void TextLCD_Base::locate(int column, int row) { |
wim | 15:b70ebfffb258 | 280 | |
wim | 15:b70ebfffb258 | 281 | // setAddress() does all the heavy lifting: |
wim | 15:b70ebfffb258 | 282 | // check column and row sanity, |
wim | 15:b70ebfffb258 | 283 | // switch controllers for LCD40x4 if needed |
wim | 15:b70ebfffb258 | 284 | // switch cursor for LCD40x4 if needed |
wim | 15:b70ebfffb258 | 285 | // set the new memory address to show cursor at correct location |
wim | 15:b70ebfffb258 | 286 | setAddress(column, row); |
wim | 15:b70ebfffb258 | 287 | |
wim | 15:b70ebfffb258 | 288 | } |
wim | 15:b70ebfffb258 | 289 | |
wim | 15:b70ebfffb258 | 290 | |
wim | 21:9eb628d9e164 | 291 | /** Write a single character (Stream implementation) |
wim | 21:9eb628d9e164 | 292 | */ |
wim | 21:9eb628d9e164 | 293 | int TextLCD_Base::_putc(int value) { |
wim | 15:b70ebfffb258 | 294 | int addr; |
wim | 15:b70ebfffb258 | 295 | |
wim | 15:b70ebfffb258 | 296 | if (value == '\n') { |
wim | 15:b70ebfffb258 | 297 | //No character to write |
wim | 15:b70ebfffb258 | 298 | |
wim | 15:b70ebfffb258 | 299 | //Update Cursor |
wim | 15:b70ebfffb258 | 300 | _column = 0; |
wim | 15:b70ebfffb258 | 301 | _row++; |
wim | 15:b70ebfffb258 | 302 | if (_row >= rows()) { |
wim | 15:b70ebfffb258 | 303 | _row = 0; |
wim | 15:b70ebfffb258 | 304 | } |
wim | 15:b70ebfffb258 | 305 | } |
wim | 15:b70ebfffb258 | 306 | else { |
wim | 15:b70ebfffb258 | 307 | //Character to write |
wim | 15:b70ebfffb258 | 308 | _writeData(value); |
wim | 15:b70ebfffb258 | 309 | |
wim | 15:b70ebfffb258 | 310 | //Update Cursor |
wim | 15:b70ebfffb258 | 311 | _column++; |
wim | 15:b70ebfffb258 | 312 | if (_column >= columns()) { |
wim | 15:b70ebfffb258 | 313 | _column = 0; |
wim | 15:b70ebfffb258 | 314 | _row++; |
wim | 15:b70ebfffb258 | 315 | if (_row >= rows()) { |
wim | 15:b70ebfffb258 | 316 | _row = 0; |
wim | 15:b70ebfffb258 | 317 | } |
wim | 15:b70ebfffb258 | 318 | } |
wim | 15:b70ebfffb258 | 319 | } //else |
wim | 15:b70ebfffb258 | 320 | |
wim | 15:b70ebfffb258 | 321 | //Set next memoryaddress, make sure cursor blinks at next location |
wim | 15:b70ebfffb258 | 322 | addr = getAddress(_column, _row); |
wim | 15:b70ebfffb258 | 323 | _writeCommand(0x80 | addr); |
wim | 15:b70ebfffb258 | 324 | |
wim | 15:b70ebfffb258 | 325 | return value; |
wim | 15:b70ebfffb258 | 326 | } |
wim | 15:b70ebfffb258 | 327 | |
wim | 15:b70ebfffb258 | 328 | |
wim | 16:c276b75e6585 | 329 | // get a single character (Stream implementation) |
wim | 21:9eb628d9e164 | 330 | int TextLCD_Base::_getc() { |
simon | 1:ac48b187213c | 331 | return -1; |
simon | 1:ac48b187213c | 332 | } |
simon | 1:ac48b187213c | 333 | |
wim | 14:0c32b66b14b8 | 334 | |
wim | 17:652ab113bc2e | 335 | // Write a nibble using the 4-bit interface |
wim | 21:9eb628d9e164 | 336 | void TextLCD_Base::_writeNibble(int value) { |
wim | 17:652ab113bc2e | 337 | |
wim | 17:652ab113bc2e | 338 | // Enable is Low |
wim | 21:9eb628d9e164 | 339 | this->_setEnable(true); |
wim | 21:9eb628d9e164 | 340 | this->_setData(value & 0x0F); // Low nibble |
wim | 17:652ab113bc2e | 341 | wait_us(1); // Data setup time |
wim | 21:9eb628d9e164 | 342 | this->_setEnable(false); |
wim | 17:652ab113bc2e | 343 | wait_us(1); // Datahold time |
wim | 17:652ab113bc2e | 344 | |
wim | 17:652ab113bc2e | 345 | // Enable is Low |
wim | 17:652ab113bc2e | 346 | |
wim | 17:652ab113bc2e | 347 | } |
wim | 17:652ab113bc2e | 348 | |
wim | 17:652ab113bc2e | 349 | |
wim | 16:c276b75e6585 | 350 | // Write a byte using the 4-bit interface |
wim | 21:9eb628d9e164 | 351 | void TextLCD_Base::_writeByte(int value) { |
wim | 15:b70ebfffb258 | 352 | |
wim | 15:b70ebfffb258 | 353 | // Enable is Low |
wim | 21:9eb628d9e164 | 354 | this->_setEnable(true); |
wim | 21:9eb628d9e164 | 355 | this->_setData(value >> 4); // High nibble |
wim | 15:b70ebfffb258 | 356 | wait_us(1); // Data setup time |
wim | 21:9eb628d9e164 | 357 | this->_setEnable(false); |
wim | 15:b70ebfffb258 | 358 | wait_us(1); // Data hold time |
wim | 15:b70ebfffb258 | 359 | |
wim | 21:9eb628d9e164 | 360 | this->_setEnable(true); |
wim | 21:9eb628d9e164 | 361 | this->_setData(value >> 0); // Low nibble |
wim | 15:b70ebfffb258 | 362 | wait_us(1); // Data setup time |
wim | 21:9eb628d9e164 | 363 | this->_setEnable(false); |
wim | 15:b70ebfffb258 | 364 | wait_us(1); // Datahold time |
wim | 15:b70ebfffb258 | 365 | |
wim | 15:b70ebfffb258 | 366 | // Enable is Low |
wim | 15:b70ebfffb258 | 367 | |
simon | 1:ac48b187213c | 368 | } |
simon | 1:ac48b187213c | 369 | |
wim | 21:9eb628d9e164 | 370 | // Write a command byte to the LCD controller |
wim | 21:9eb628d9e164 | 371 | void TextLCD_Base::_writeCommand(int command) { |
wim | 15:b70ebfffb258 | 372 | |
wim | 21:9eb628d9e164 | 373 | this->_setRS(false); |
wim | 16:c276b75e6585 | 374 | wait_us(1); // Data setup time for RS |
wim | 15:b70ebfffb258 | 375 | |
wim | 21:9eb628d9e164 | 376 | this->_writeByte(command); |
wim | 15:b70ebfffb258 | 377 | wait_us(40); // most instructions take 40us |
simon | 1:ac48b187213c | 378 | } |
simon | 1:ac48b187213c | 379 | |
wim | 21:9eb628d9e164 | 380 | // Write a data byte to the LCD controller |
wim | 21:9eb628d9e164 | 381 | void TextLCD_Base::_writeData(int data) { |
wim | 15:b70ebfffb258 | 382 | |
wim | 21:9eb628d9e164 | 383 | this->_setRS(true); |
wim | 16:c276b75e6585 | 384 | wait_us(1); // Data setup time for RS |
wim | 15:b70ebfffb258 | 385 | |
wim | 21:9eb628d9e164 | 386 | this->_writeByte(data); |
wim | 15:b70ebfffb258 | 387 | wait_us(40); // data writes take 40us |
simon | 1:ac48b187213c | 388 | } |
simon | 1:ac48b187213c | 389 | |
wim | 8:03116f75b66e | 390 | |
wim | 8:03116f75b66e | 391 | #if (0) |
wim | 16:c276b75e6585 | 392 | // This is the original _address() method. |
wim | 8:03116f75b66e | 393 | // It is confusing since it returns the memoryaddress or-ed with the set memorycommand 0x80. |
wim | 8:03116f75b66e | 394 | // Left it in here for compatibility with older code. New applications should use getAddress() instead. |
wim | 8:03116f75b66e | 395 | // |
wim | 21:9eb628d9e164 | 396 | int TextLCD_Base::_address(int column, int row) { |
simon | 1:ac48b187213c | 397 | switch (_type) { |
simon | 1:ac48b187213c | 398 | case LCD20x4: |
simon | 1:ac48b187213c | 399 | switch (row) { |
simon | 1:ac48b187213c | 400 | case 0: |
simon | 1:ac48b187213c | 401 | return 0x80 + column; |
simon | 1:ac48b187213c | 402 | case 1: |
simon | 1:ac48b187213c | 403 | return 0xc0 + column; |
simon | 1:ac48b187213c | 404 | case 2: |
simon | 1:ac48b187213c | 405 | return 0x94 + column; |
simon | 1:ac48b187213c | 406 | case 3: |
simon | 1:ac48b187213c | 407 | return 0xd4 + column; |
simon | 1:ac48b187213c | 408 | } |
simon | 1:ac48b187213c | 409 | case LCD16x2B: |
simon | 4:bf5b706f8d32 | 410 | return 0x80 + (row * 40) + column; |
simon | 1:ac48b187213c | 411 | case LCD16x2: |
simon | 1:ac48b187213c | 412 | case LCD20x2: |
simon | 1:ac48b187213c | 413 | default: |
simon | 4:bf5b706f8d32 | 414 | return 0x80 + (row * 0x40) + column; |
simon | 1:ac48b187213c | 415 | } |
simon | 1:ac48b187213c | 416 | } |
wim | 8:03116f75b66e | 417 | #endif |
wim | 8:03116f75b66e | 418 | |
wim | 8:03116f75b66e | 419 | |
wim | 16:c276b75e6585 | 420 | // This replaces the original _address() method. |
wim | 8:03116f75b66e | 421 | // Left it in here for compatibility with older code. New applications should use getAddress() instead. |
wim | 21:9eb628d9e164 | 422 | int TextLCD_Base::_address(int column, int row) { |
wim | 8:03116f75b66e | 423 | return 0x80 | getAddress(column, row); |
wim | 8:03116f75b66e | 424 | } |
wim | 8:03116f75b66e | 425 | |
wim | 8:03116f75b66e | 426 | // This is new method to return the memory address based on row, column and displaytype. |
wim | 8:03116f75b66e | 427 | // |
wim | 21:9eb628d9e164 | 428 | int TextLCD_Base::getAddress(int column, int row) { |
wim | 8:03116f75b66e | 429 | |
wim | 8:03116f75b66e | 430 | switch (_type) { |
wim | 8:03116f75b66e | 431 | case LCD8x1: |
wim | 8:03116f75b66e | 432 | return 0x00 + column; |
wim | 18:bd65dc10f27f | 433 | |
wim | 18:bd65dc10f27f | 434 | case LCD8x2B: |
wim | 18:bd65dc10f27f | 435 | // LCD8x2B is a special layout of LCD16x1 |
wim | 18:bd65dc10f27f | 436 | if (row==0) |
wim | 18:bd65dc10f27f | 437 | return 0x00 + column; |
wim | 18:bd65dc10f27f | 438 | else |
wim | 18:bd65dc10f27f | 439 | return 0x08 + column; |
wim | 18:bd65dc10f27f | 440 | |
wim | 18:bd65dc10f27f | 441 | |
wim | 13:24506ba22480 | 442 | case LCD16x1: |
wim | 13:24506ba22480 | 443 | // LCD16x1 is a special layout of LCD8x2 |
wim | 13:24506ba22480 | 444 | if (column<8) |
wim | 13:24506ba22480 | 445 | return 0x00 + column; |
wim | 13:24506ba22480 | 446 | else |
wim | 13:24506ba22480 | 447 | return 0x40 + (column - 8); |
wim | 13:24506ba22480 | 448 | |
wim | 15:b70ebfffb258 | 449 | case LCD12x4: |
wim | 15:b70ebfffb258 | 450 | switch (row) { |
wim | 15:b70ebfffb258 | 451 | case 0: |
wim | 15:b70ebfffb258 | 452 | return 0x00 + column; |
wim | 15:b70ebfffb258 | 453 | case 1: |
wim | 15:b70ebfffb258 | 454 | return 0x40 + column; |
wim | 15:b70ebfffb258 | 455 | case 2: |
wim | 15:b70ebfffb258 | 456 | return 0x0C + column; |
wim | 15:b70ebfffb258 | 457 | case 3: |
wim | 15:b70ebfffb258 | 458 | return 0x4C + column; |
wim | 15:b70ebfffb258 | 459 | } |
wim | 15:b70ebfffb258 | 460 | |
wim | 8:03116f75b66e | 461 | case LCD16x4: |
wim | 8:03116f75b66e | 462 | switch (row) { |
wim | 8:03116f75b66e | 463 | case 0: |
wim | 8:03116f75b66e | 464 | return 0x00 + column; |
wim | 8:03116f75b66e | 465 | case 1: |
wim | 8:03116f75b66e | 466 | return 0x40 + column; |
wim | 8:03116f75b66e | 467 | case 2: |
wim | 8:03116f75b66e | 468 | return 0x10 + column; |
wim | 8:03116f75b66e | 469 | case 3: |
wim | 8:03116f75b66e | 470 | return 0x50 + column; |
wim | 8:03116f75b66e | 471 | } |
wim | 8:03116f75b66e | 472 | |
wim | 8:03116f75b66e | 473 | case LCD20x4: |
wim | 8:03116f75b66e | 474 | switch (row) { |
wim | 8:03116f75b66e | 475 | case 0: |
wim | 8:03116f75b66e | 476 | return 0x00 + column; |
wim | 8:03116f75b66e | 477 | case 1: |
wim | 8:03116f75b66e | 478 | return 0x40 + column; |
wim | 8:03116f75b66e | 479 | case 2: |
wim | 8:03116f75b66e | 480 | return 0x14 + column; |
wim | 8:03116f75b66e | 481 | case 3: |
wim | 8:03116f75b66e | 482 | return 0x54 + column; |
wim | 8:03116f75b66e | 483 | } |
wim | 8:03116f75b66e | 484 | |
wim | 10:dd9b3a696acd | 485 | // Special mode for KS0078 |
wim | 10:dd9b3a696acd | 486 | case LCD24x4: |
wim | 10:dd9b3a696acd | 487 | switch (row) { |
wim | 10:dd9b3a696acd | 488 | case 0: |
wim | 10:dd9b3a696acd | 489 | return 0x00 + column; |
wim | 10:dd9b3a696acd | 490 | case 1: |
wim | 10:dd9b3a696acd | 491 | return 0x20 + column; |
wim | 10:dd9b3a696acd | 492 | case 2: |
wim | 10:dd9b3a696acd | 493 | return 0x40 + column; |
wim | 10:dd9b3a696acd | 494 | case 3: |
wim | 10:dd9b3a696acd | 495 | return 0x60 + column; |
wim | 10:dd9b3a696acd | 496 | } |
wim | 10:dd9b3a696acd | 497 | |
wim | 8:03116f75b66e | 498 | // Not sure about this one, seems wrong. |
wim | 8:03116f75b66e | 499 | case LCD16x2B: |
wim | 8:03116f75b66e | 500 | return 0x00 + (row * 40) + column; |
wim | 8:03116f75b66e | 501 | |
wim | 18:bd65dc10f27f | 502 | case LCD8x2: |
wim | 15:b70ebfffb258 | 503 | case LCD12x2: |
wim | 8:03116f75b66e | 504 | case LCD16x2: |
wim | 8:03116f75b66e | 505 | case LCD20x2: |
wim | 8:03116f75b66e | 506 | case LCD24x2: |
wim | 9:0893d986e717 | 507 | case LCD40x2: |
wim | 8:03116f75b66e | 508 | return 0x00 + (row * 0x40) + column; |
wim | 15:b70ebfffb258 | 509 | |
wim | 15:b70ebfffb258 | 510 | case LCD40x4: |
wim | 15:b70ebfffb258 | 511 | // LCD40x4 is a special case since it has 2 controllers |
wim | 15:b70ebfffb258 | 512 | // Each controller is configured as 40x2 |
wim | 15:b70ebfffb258 | 513 | if (row<2) { |
wim | 15:b70ebfffb258 | 514 | // Test to see if we need to switch between controllers |
wim | 19:c747b9e2e7b8 | 515 | if (_ctrl_idx != _LCDCtrl_0) { |
wim | 17:652ab113bc2e | 516 | |
wim | 15:b70ebfffb258 | 517 | // Second LCD controller Cursor Off |
wim | 21:9eb628d9e164 | 518 | _setCursorAndDisplayMode(_currentMode, CurOff_BlkOff); |
wim | 15:b70ebfffb258 | 519 | |
wim | 15:b70ebfffb258 | 520 | // Select primary controller |
wim | 19:c747b9e2e7b8 | 521 | _ctrl_idx = _LCDCtrl_0; |
wim | 15:b70ebfffb258 | 522 | |
wim | 15:b70ebfffb258 | 523 | // Restore cursormode on primary LCD controller |
wim | 17:652ab113bc2e | 524 | _setCursorAndDisplayMode(_currentMode, _currentCursor); |
wim | 15:b70ebfffb258 | 525 | } |
wim | 15:b70ebfffb258 | 526 | |
wim | 15:b70ebfffb258 | 527 | return 0x00 + (row * 0x40) + column; |
wim | 15:b70ebfffb258 | 528 | } |
wim | 15:b70ebfffb258 | 529 | else { |
wim | 15:b70ebfffb258 | 530 | |
wim | 15:b70ebfffb258 | 531 | // Test to see if we need to switch between controllers |
wim | 19:c747b9e2e7b8 | 532 | if (_ctrl_idx != _LCDCtrl_1) { |
wim | 15:b70ebfffb258 | 533 | // Primary LCD controller Cursor Off |
wim | 21:9eb628d9e164 | 534 | _setCursorAndDisplayMode(_currentMode, CurOff_BlkOff); |
wim | 15:b70ebfffb258 | 535 | |
wim | 15:b70ebfffb258 | 536 | // Select secondary controller |
wim | 19:c747b9e2e7b8 | 537 | _ctrl_idx = _LCDCtrl_1; |
wim | 15:b70ebfffb258 | 538 | |
wim | 15:b70ebfffb258 | 539 | // Restore cursormode on secondary LCD controller |
wim | 17:652ab113bc2e | 540 | _setCursorAndDisplayMode(_currentMode, _currentCursor); |
wim | 15:b70ebfffb258 | 541 | } |
wim | 15:b70ebfffb258 | 542 | |
wim | 15:b70ebfffb258 | 543 | return 0x00 + ((row-2) * 0x40) + column; |
wim | 15:b70ebfffb258 | 544 | } |
wim | 8:03116f75b66e | 545 | |
wim | 8:03116f75b66e | 546 | // Should never get here. |
wim | 8:03116f75b66e | 547 | default: |
wim | 8:03116f75b66e | 548 | return 0x00; |
wim | 8:03116f75b66e | 549 | } |
wim | 8:03116f75b66e | 550 | } |
wim | 8:03116f75b66e | 551 | |
wim | 8:03116f75b66e | 552 | |
wim | 15:b70ebfffb258 | 553 | // Set row, column and update memoryaddress. |
wim | 8:03116f75b66e | 554 | // |
wim | 21:9eb628d9e164 | 555 | void TextLCD_Base::setAddress(int column, int row) { |
wim | 15:b70ebfffb258 | 556 | |
wim | 15:b70ebfffb258 | 557 | // Sanity Check column |
wim | 15:b70ebfffb258 | 558 | if (column < 0) { |
wim | 15:b70ebfffb258 | 559 | _column = 0; |
wim | 15:b70ebfffb258 | 560 | } |
wim | 15:b70ebfffb258 | 561 | else if (column >= columns()) { |
wim | 15:b70ebfffb258 | 562 | _column = columns() - 1; |
wim | 15:b70ebfffb258 | 563 | } else _column = column; |
wim | 8:03116f75b66e | 564 | |
wim | 15:b70ebfffb258 | 565 | // Sanity Check row |
wim | 15:b70ebfffb258 | 566 | if (row < 0) { |
wim | 15:b70ebfffb258 | 567 | _row = 0; |
wim | 15:b70ebfffb258 | 568 | } |
wim | 15:b70ebfffb258 | 569 | else if (row >= rows()) { |
wim | 15:b70ebfffb258 | 570 | _row = rows() - 1; |
wim | 15:b70ebfffb258 | 571 | } else _row = row; |
wim | 15:b70ebfffb258 | 572 | |
wim | 15:b70ebfffb258 | 573 | |
wim | 15:b70ebfffb258 | 574 | // Compute the memory address |
wim | 15:b70ebfffb258 | 575 | // For LCD40x4: switch controllers if needed |
wim | 15:b70ebfffb258 | 576 | // switch cursor if needed |
wim | 15:b70ebfffb258 | 577 | int addr = getAddress(_column, _row); |
wim | 8:03116f75b66e | 578 | |
wim | 13:24506ba22480 | 579 | _writeCommand(0x80 | addr); |
wim | 8:03116f75b66e | 580 | } |
simon | 1:ac48b187213c | 581 | |
wim | 21:9eb628d9e164 | 582 | int TextLCD_Base::columns() { |
simon | 1:ac48b187213c | 583 | switch (_type) { |
wim | 8:03116f75b66e | 584 | case LCD8x1: |
wim | 8:03116f75b66e | 585 | case LCD8x2: |
wim | 18:bd65dc10f27f | 586 | case LCD8x2B: |
wim | 8:03116f75b66e | 587 | return 8; |
wim | 15:b70ebfffb258 | 588 | |
wim | 15:b70ebfffb258 | 589 | case LCD12x2: |
wim | 15:b70ebfffb258 | 590 | case LCD12x4: |
wim | 15:b70ebfffb258 | 591 | return 12; |
wim | 8:03116f75b66e | 592 | |
wim | 13:24506ba22480 | 593 | case LCD16x1: |
simon | 1:ac48b187213c | 594 | case LCD16x2: |
simon | 1:ac48b187213c | 595 | case LCD16x2B: |
wim | 8:03116f75b66e | 596 | case LCD16x4: |
wim | 8:03116f75b66e | 597 | return 16; |
wim | 8:03116f75b66e | 598 | |
wim | 8:03116f75b66e | 599 | case LCD20x2: |
wim | 8:03116f75b66e | 600 | case LCD20x4: |
wim | 8:03116f75b66e | 601 | return 20; |
wim | 8:03116f75b66e | 602 | |
wim | 8:03116f75b66e | 603 | case LCD24x2: |
wim | 10:dd9b3a696acd | 604 | case LCD24x4: |
wim | 8:03116f75b66e | 605 | return 24; |
wim | 9:0893d986e717 | 606 | |
wim | 9:0893d986e717 | 607 | case LCD40x2: |
wim | 15:b70ebfffb258 | 608 | case LCD40x4: |
wim | 9:0893d986e717 | 609 | return 40; |
wim | 8:03116f75b66e | 610 | |
wim | 8:03116f75b66e | 611 | // Should never get here. |
simon | 1:ac48b187213c | 612 | default: |
wim | 8:03116f75b66e | 613 | return 0; |
simon | 1:ac48b187213c | 614 | } |
simon | 1:ac48b187213c | 615 | } |
simon | 1:ac48b187213c | 616 | |
wim | 21:9eb628d9e164 | 617 | int TextLCD_Base::rows() { |
simon | 1:ac48b187213c | 618 | switch (_type) { |
wim | 8:03116f75b66e | 619 | case LCD8x1: |
wim | 13:24506ba22480 | 620 | case LCD16x1: |
wim | 8:03116f75b66e | 621 | return 1; |
wim | 8:03116f75b66e | 622 | |
wim | 15:b70ebfffb258 | 623 | case LCD8x2: |
wim | 18:bd65dc10f27f | 624 | case LCD8x2B: |
wim | 15:b70ebfffb258 | 625 | case LCD12x2: |
simon | 1:ac48b187213c | 626 | case LCD16x2: |
simon | 1:ac48b187213c | 627 | case LCD16x2B: |
simon | 1:ac48b187213c | 628 | case LCD20x2: |
wim | 8:03116f75b66e | 629 | case LCD24x2: |
wim | 9:0893d986e717 | 630 | case LCD40x2: |
wim | 8:03116f75b66e | 631 | return 2; |
wim | 8:03116f75b66e | 632 | |
wim | 15:b70ebfffb258 | 633 | case LCD12x4: |
wim | 8:03116f75b66e | 634 | case LCD16x4: |
wim | 8:03116f75b66e | 635 | case LCD20x4: |
wim | 10:dd9b3a696acd | 636 | case LCD24x4: |
wim | 15:b70ebfffb258 | 637 | case LCD40x4: |
wim | 8:03116f75b66e | 638 | return 4; |
wim | 12:6bf9d9957d31 | 639 | |
wim | 12:6bf9d9957d31 | 640 | // Should never get here. |
simon | 1:ac48b187213c | 641 | default: |
wim | 8:03116f75b66e | 642 | return 0; |
simon | 1:ac48b187213c | 643 | } |
simon | 1:ac48b187213c | 644 | } |
wim | 10:dd9b3a696acd | 645 | |
wim | 10:dd9b3a696acd | 646 | |
wim | 17:652ab113bc2e | 647 | // Set the Cursor Mode (Cursor Off & Blink Off, Cursor On & Blink Off, Cursor Off & Blink On, Cursor On & Blink On |
wim | 21:9eb628d9e164 | 648 | void TextLCD_Base::setCursor(LCDCursor cursorMode) { |
wim | 15:b70ebfffb258 | 649 | |
wim | 17:652ab113bc2e | 650 | // Save new cursor mode, needed when 2 controllers are in use or when display is switched off/on |
wim | 17:652ab113bc2e | 651 | _currentCursor = cursorMode; |
wim | 10:dd9b3a696acd | 652 | |
wim | 17:652ab113bc2e | 653 | // Configure only current LCD controller |
wim | 17:652ab113bc2e | 654 | _setCursorAndDisplayMode(_currentMode, _currentCursor); |
wim | 15:b70ebfffb258 | 655 | |
wim | 15:b70ebfffb258 | 656 | } |
wim | 15:b70ebfffb258 | 657 | |
wim | 17:652ab113bc2e | 658 | // Set the Displaymode (On/Off) |
wim | 21:9eb628d9e164 | 659 | void TextLCD_Base::setMode(LCDMode displayMode) { |
wim | 17:652ab113bc2e | 660 | |
wim | 17:652ab113bc2e | 661 | // Save new displayMode, needed when 2 controllers are in use or when cursor is changed |
wim | 17:652ab113bc2e | 662 | _currentMode = displayMode; |
wim | 15:b70ebfffb258 | 663 | |
wim | 17:652ab113bc2e | 664 | // Select and configure second LCD controller when needed |
wim | 17:652ab113bc2e | 665 | if(_type==LCD40x4) { |
wim | 21:9eb628d9e164 | 666 | if (_ctrl_idx==_LCDCtrl_0) { |
wim | 17:652ab113bc2e | 667 | // Configure primary LCD controller |
wim | 17:652ab113bc2e | 668 | _setCursorAndDisplayMode(_currentMode, _currentCursor); |
wim | 11:9ec02df863a1 | 669 | |
wim | 17:652ab113bc2e | 670 | // Select 2nd controller |
wim | 21:9eb628d9e164 | 671 | _ctrl_idx=_LCDCtrl_1; |
wim | 17:652ab113bc2e | 672 | |
wim | 17:652ab113bc2e | 673 | // Configure secondary LCD controller |
wim | 21:9eb628d9e164 | 674 | _setCursorAndDisplayMode(_currentMode, CurOff_BlkOff); |
wim | 11:9ec02df863a1 | 675 | |
wim | 17:652ab113bc2e | 676 | // Restore current controller |
wim | 21:9eb628d9e164 | 677 | _ctrl_idx=_LCDCtrl_0; |
wim | 17:652ab113bc2e | 678 | } |
wim | 17:652ab113bc2e | 679 | else { |
wim | 17:652ab113bc2e | 680 | // Select primary controller |
wim | 21:9eb628d9e164 | 681 | _ctrl_idx=_LCDCtrl_0; |
wim | 17:652ab113bc2e | 682 | |
wim | 17:652ab113bc2e | 683 | // Configure primary LCD controller |
wim | 21:9eb628d9e164 | 684 | _setCursorAndDisplayMode(_currentMode, CurOff_BlkOff); |
wim | 17:652ab113bc2e | 685 | |
wim | 17:652ab113bc2e | 686 | // Restore current controller |
wim | 21:9eb628d9e164 | 687 | _ctrl_idx=_LCDCtrl_1; |
wim | 11:9ec02df863a1 | 688 | |
wim | 17:652ab113bc2e | 689 | // Configure secondary LCD controller |
wim | 17:652ab113bc2e | 690 | _setCursorAndDisplayMode(_currentMode, _currentCursor); |
wim | 11:9ec02df863a1 | 691 | |
wim | 10:dd9b3a696acd | 692 | } |
wim | 17:652ab113bc2e | 693 | } |
wim | 17:652ab113bc2e | 694 | else { |
wim | 17:652ab113bc2e | 695 | // Configure primary LCD controller |
wim | 17:652ab113bc2e | 696 | _setCursorAndDisplayMode(_currentMode, _currentCursor); |
wim | 17:652ab113bc2e | 697 | } |
wim | 17:652ab113bc2e | 698 | |
wim | 17:652ab113bc2e | 699 | } |
wim | 17:652ab113bc2e | 700 | |
wim | 17:652ab113bc2e | 701 | |
wim | 17:652ab113bc2e | 702 | // Set the Displaymode (On/Off) and Cursortype for current controller |
wim | 21:9eb628d9e164 | 703 | void TextLCD_Base::_setCursorAndDisplayMode(LCDMode displayMode, LCDCursor cursorType) { |
wim | 17:652ab113bc2e | 704 | |
wim | 17:652ab113bc2e | 705 | // Configure current LCD controller |
wim | 17:652ab113bc2e | 706 | _writeCommand(0x08 | displayMode | cursorType); |
wim | 10:dd9b3a696acd | 707 | } |
wim | 10:dd9b3a696acd | 708 | |
wim | 20:e0da005a777f | 709 | // Set the Backlight mode (Off/On) |
wim | 21:9eb628d9e164 | 710 | void TextLCD_Base::setBacklight(LCDBacklight backlightMode) { |
wim | 20:e0da005a777f | 711 | |
wim | 20:e0da005a777f | 712 | if (backlightMode == LightOn) { |
wim | 21:9eb628d9e164 | 713 | this->_setBL(true); |
wim | 20:e0da005a777f | 714 | } |
wim | 20:e0da005a777f | 715 | else { |
wim | 21:9eb628d9e164 | 716 | this->_setBL(false); |
wim | 20:e0da005a777f | 717 | } |
wim | 20:e0da005a777f | 718 | } |
wim | 20:e0da005a777f | 719 | |
wim | 10:dd9b3a696acd | 720 | |
wim | 21:9eb628d9e164 | 721 | void TextLCD_Base::setUDC(unsigned char c, char *udc_data) { |
wim | 15:b70ebfffb258 | 722 | |
wim | 15:b70ebfffb258 | 723 | // Select and configure second LCD controller when needed |
wim | 15:b70ebfffb258 | 724 | if(_type==LCD40x4) { |
wim | 19:c747b9e2e7b8 | 725 | _LCDCtrl_Idx current_ctrl_idx = _ctrl_idx; // Temp save current controller |
wim | 15:b70ebfffb258 | 726 | |
wim | 15:b70ebfffb258 | 727 | // Select primary controller |
wim | 21:9eb628d9e164 | 728 | _ctrl_idx=_LCDCtrl_0; |
wim | 15:b70ebfffb258 | 729 | |
wim | 15:b70ebfffb258 | 730 | // Configure primary LCD controller |
wim | 15:b70ebfffb258 | 731 | _setUDC(c, udc_data); |
wim | 15:b70ebfffb258 | 732 | |
wim | 15:b70ebfffb258 | 733 | // Select 2nd controller |
wim | 21:9eb628d9e164 | 734 | _ctrl_idx=_LCDCtrl_1; |
wim | 15:b70ebfffb258 | 735 | |
wim | 15:b70ebfffb258 | 736 | // Configure secondary LCD controller |
wim | 15:b70ebfffb258 | 737 | _setUDC(c, udc_data); |
wim | 11:9ec02df863a1 | 738 | |
wim | 15:b70ebfffb258 | 739 | // Restore current controller |
wim | 19:c747b9e2e7b8 | 740 | _ctrl_idx=current_ctrl_idx; |
wim | 15:b70ebfffb258 | 741 | } |
wim | 15:b70ebfffb258 | 742 | else { |
wim | 15:b70ebfffb258 | 743 | // Configure primary LCD controller |
wim | 15:b70ebfffb258 | 744 | _setUDC(c, udc_data); |
wim | 15:b70ebfffb258 | 745 | } |
wim | 15:b70ebfffb258 | 746 | |
wim | 15:b70ebfffb258 | 747 | } |
wim | 15:b70ebfffb258 | 748 | |
wim | 21:9eb628d9e164 | 749 | void TextLCD_Base::_setUDC(unsigned char c, char *udc_data) { |
wim | 15:b70ebfffb258 | 750 | |
wim | 15:b70ebfffb258 | 751 | // Select CG RAM for current LCD controller |
wim | 15:b70ebfffb258 | 752 | _writeCommand(0x40 + ((c & 0x07) << 3)); //Set CG-RAM address, |
wim | 15:b70ebfffb258 | 753 | //8 sequential locations needed per UDC |
wim | 15:b70ebfffb258 | 754 | // Store UDC pattern |
wim | 11:9ec02df863a1 | 755 | for (int i=0; i<8; i++) { |
wim | 13:24506ba22480 | 756 | _writeData(*udc_data++); |
wim | 11:9ec02df863a1 | 757 | } |
wim | 15:b70ebfffb258 | 758 | |
wim | 15:b70ebfffb258 | 759 | //Select DD RAM again for current LCD controller |
wim | 15:b70ebfffb258 | 760 | int addr = getAddress(_column, _row); |
wim | 15:b70ebfffb258 | 761 | _writeCommand(0x80 | addr); |
wim | 15:b70ebfffb258 | 762 | |
wim | 11:9ec02df863a1 | 763 | } |
wim | 21:9eb628d9e164 | 764 | |
wim | 23:d47f226efb24 | 765 | //--------- End TextLCD_Base ----------- |
wim | 21:9eb628d9e164 | 766 | |
wim | 22:35742ec80c24 | 767 | |
wim | 21:9eb628d9e164 | 768 | |
wim | 23:d47f226efb24 | 769 | //--------- Start TextLCD Bus ----------- |
wim | 21:9eb628d9e164 | 770 | |
wim | 21:9eb628d9e164 | 771 | /* Create a TextLCD interface for using regular mbed pins |
wim | 21:9eb628d9e164 | 772 | * |
wim | 21:9eb628d9e164 | 773 | * @param rs Instruction/data control line |
wim | 21:9eb628d9e164 | 774 | * @param e Enable line (clock) |
wim | 21:9eb628d9e164 | 775 | * @param d4-d7 Data lines for using as a 4-bit interface |
wim | 21:9eb628d9e164 | 776 | * @param type Sets the panel size/addressing mode (default = LCD16x2) |
wim | 21:9eb628d9e164 | 777 | * @param bl Backlight control line (optional, default = NC) |
wim | 21:9eb628d9e164 | 778 | * @param e2 Enable2 line (clock for second controller, LCD40x4 only) |
wim | 21:9eb628d9e164 | 779 | * @param ctrl LCD controller (default = HD44780) |
wim | 21:9eb628d9e164 | 780 | */ |
wim | 21:9eb628d9e164 | 781 | TextLCD::TextLCD(PinName rs, PinName e, |
wim | 21:9eb628d9e164 | 782 | PinName d4, PinName d5, PinName d6, PinName d7, |
wim | 21:9eb628d9e164 | 783 | LCDType type, PinName bl, PinName e2, LCDCtrl ctrl) : |
wim | 21:9eb628d9e164 | 784 | TextLCD_Base(type, ctrl), |
wim | 22:35742ec80c24 | 785 | _rs(rs), _e(e), _d(d4, d5, d6, d7) { |
wim | 22:35742ec80c24 | 786 | |
wim | 22:35742ec80c24 | 787 | // The hardware Backlight pin is optional. Test and make sure whether it exists or not to prevent illegal access. |
wim | 22:35742ec80c24 | 788 | if (bl != NC) { |
wim | 22:35742ec80c24 | 789 | _bl = new DigitalOut(bl); //Construct new pin |
wim | 22:35742ec80c24 | 790 | _bl->write(0); //Deactivate |
wim | 22:35742ec80c24 | 791 | } |
wim | 22:35742ec80c24 | 792 | else { |
wim | 22:35742ec80c24 | 793 | // No Hardware Backlight pin |
wim | 22:35742ec80c24 | 794 | _bl = NULL; //Construct dummy pin |
wim | 22:35742ec80c24 | 795 | } |
wim | 22:35742ec80c24 | 796 | |
wim | 22:35742ec80c24 | 797 | // The hardware Enable2 pin is only needed for LCD40x4. Test and make sure whether it exists or not to prevent illegal access. |
wim | 22:35742ec80c24 | 798 | if (e2 != NC) { |
wim | 22:35742ec80c24 | 799 | _e2 = new DigitalOut(e2); //Construct new pin |
wim | 22:35742ec80c24 | 800 | _e2->write(0); //Deactivate |
wim | 22:35742ec80c24 | 801 | } |
wim | 22:35742ec80c24 | 802 | else { |
wim | 22:35742ec80c24 | 803 | // No Hardware Enable pin |
wim | 22:35742ec80c24 | 804 | _e2 = NULL; //Construct dummy pin |
wim | 22:35742ec80c24 | 805 | } |
wim | 21:9eb628d9e164 | 806 | |
wim | 21:9eb628d9e164 | 807 | _init(); |
wim | 21:9eb628d9e164 | 808 | |
wim | 21:9eb628d9e164 | 809 | } |
wim | 21:9eb628d9e164 | 810 | |
wim | 22:35742ec80c24 | 811 | /** Set E pin (or E2 pin) |
wim | 22:35742ec80c24 | 812 | * Used for mbed pins, I2C bus expander or SPI shiftregister |
wim | 22:35742ec80c24 | 813 | * Default PinName value for E2 is NC, must be used as pointer to avoid issues with mbed lib and DigitalOut pins |
wim | 22:35742ec80c24 | 814 | * @param value true or false |
wim | 22:35742ec80c24 | 815 | * @return none |
wim | 22:35742ec80c24 | 816 | */ |
wim | 21:9eb628d9e164 | 817 | void TextLCD::_setEnable(bool value) { |
wim | 21:9eb628d9e164 | 818 | |
wim | 22:35742ec80c24 | 819 | if(_ctrl_idx==_LCDCtrl_0) { |
wim | 22:35742ec80c24 | 820 | if (value) { |
wim | 22:35742ec80c24 | 821 | _e = 1; // Set E bit |
wim | 22:35742ec80c24 | 822 | } |
wim | 22:35742ec80c24 | 823 | else { |
wim | 22:35742ec80c24 | 824 | _e = 0; // Reset E bit |
wim | 22:35742ec80c24 | 825 | } |
wim | 22:35742ec80c24 | 826 | } |
wim | 22:35742ec80c24 | 827 | else { |
wim | 22:35742ec80c24 | 828 | if (value) { |
wim | 22:35742ec80c24 | 829 | if (_e2 != NULL) {_e2->write(1);} //Set E2 bit |
wim | 22:35742ec80c24 | 830 | } |
wim | 22:35742ec80c24 | 831 | else { |
wim | 22:35742ec80c24 | 832 | if (_e2 != NULL) {_e2->write(0);} //Reset E2 bit |
wim | 22:35742ec80c24 | 833 | } |
wim | 22:35742ec80c24 | 834 | } |
wim | 21:9eb628d9e164 | 835 | |
wim | 21:9eb628d9e164 | 836 | } |
wim | 21:9eb628d9e164 | 837 | |
wim | 21:9eb628d9e164 | 838 | // Set RS pin |
wim | 21:9eb628d9e164 | 839 | // Used for mbed pins, I2C bus expander or SPI shiftregister |
wim | 21:9eb628d9e164 | 840 | void TextLCD::_setRS(bool value) { |
wim | 21:9eb628d9e164 | 841 | |
wim | 22:35742ec80c24 | 842 | if (value) { |
wim | 21:9eb628d9e164 | 843 | _rs = 1; // Set RS bit |
wim | 22:35742ec80c24 | 844 | } |
wim | 22:35742ec80c24 | 845 | else { |
wim | 21:9eb628d9e164 | 846 | _rs = 0; // Reset RS bit |
wim | 22:35742ec80c24 | 847 | } |
wim | 21:9eb628d9e164 | 848 | |
wim | 21:9eb628d9e164 | 849 | } |
wim | 21:9eb628d9e164 | 850 | |
wim | 22:35742ec80c24 | 851 | /** Set BL pin |
wim | 22:35742ec80c24 | 852 | * Used for mbed pins, I2C bus expander or SPI shiftregister |
wim | 22:35742ec80c24 | 853 | * Default PinName value is NC, must be used as pointer to avoid issues with mbed lib and DigitalOut pins |
wim | 22:35742ec80c24 | 854 | * @param value true or false |
wim | 22:35742ec80c24 | 855 | * @return none |
wim | 22:35742ec80c24 | 856 | */ |
wim | 21:9eb628d9e164 | 857 | void TextLCD::_setBL(bool value) { |
wim | 21:9eb628d9e164 | 858 | |
wim | 22:35742ec80c24 | 859 | if (value) { |
wim | 22:35742ec80c24 | 860 | if (_bl != NULL) {_bl->write(1);} //Set BL bit |
wim | 22:35742ec80c24 | 861 | } |
wim | 22:35742ec80c24 | 862 | else { |
wim | 22:35742ec80c24 | 863 | if (_bl != NULL) {_bl->write(0);} //Reset BL bit |
wim | 22:35742ec80c24 | 864 | } |
wim | 21:9eb628d9e164 | 865 | |
wim | 21:9eb628d9e164 | 866 | } |
wim | 21:9eb628d9e164 | 867 | |
wim | 21:9eb628d9e164 | 868 | // Place the 4bit data on the databus |
wim | 21:9eb628d9e164 | 869 | // Used for mbed pins, I2C bus expander or SPI shifregister |
wim | 21:9eb628d9e164 | 870 | void TextLCD::_setData(int value) { |
wim | 21:9eb628d9e164 | 871 | _d = value & 0x0F; // Write Databits |
wim | 21:9eb628d9e164 | 872 | } |
wim | 21:9eb628d9e164 | 873 | |
wim | 22:35742ec80c24 | 874 | /** Destruct a TextLCD interface for using regular mbed pins |
wim | 22:35742ec80c24 | 875 | * |
wim | 22:35742ec80c24 | 876 | * @param none |
wim | 22:35742ec80c24 | 877 | * @return none |
wim | 22:35742ec80c24 | 878 | */ |
wim | 22:35742ec80c24 | 879 | TextLCD::~TextLCD() { |
wim | 22:35742ec80c24 | 880 | if (_bl != NULL) {delete _bl;} // BL pin |
wim | 22:35742ec80c24 | 881 | if (_e2 != NULL) {delete _e2;} // E2 pin |
wim | 22:35742ec80c24 | 882 | } |
wim | 21:9eb628d9e164 | 883 | |
wim | 22:35742ec80c24 | 884 | |
wim | 23:d47f226efb24 | 885 | //----------- End TextLCD --------------- |
wim | 21:9eb628d9e164 | 886 | |
wim | 21:9eb628d9e164 | 887 | |
wim | 23:d47f226efb24 | 888 | //--------- Start TextLCD_I2C ----------- |
wim | 22:35742ec80c24 | 889 | |
wim | 26:bd897a001012 | 890 | /** Create a TextLCD interface using an I2C PC8574 (or PCF8574A) or MCP23008 portexpander |
wim | 22:35742ec80c24 | 891 | * |
wim | 22:35742ec80c24 | 892 | * @param i2c I2C Bus |
wim | 26:bd897a001012 | 893 | * @param deviceAddress I2C slave address (PCF8574, PCF8574A or MCP23008, default = 0x40) |
wim | 22:35742ec80c24 | 894 | * @param type Sets the panel size/addressing mode (default = LCD16x2) |
wim | 22:35742ec80c24 | 895 | * @param ctrl LCD controller (default = HD44780) |
wim | 22:35742ec80c24 | 896 | */ |
wim | 21:9eb628d9e164 | 897 | TextLCD_I2C::TextLCD_I2C(I2C *i2c, char deviceAddress, LCDType type, LCDCtrl ctrl) : |
wim | 21:9eb628d9e164 | 898 | TextLCD_Base(type, ctrl), |
wim | 21:9eb628d9e164 | 899 | _i2c(i2c){ |
wim | 21:9eb628d9e164 | 900 | |
wim | 22:35742ec80c24 | 901 | _slaveAddress = deviceAddress & 0xFE; |
wim | 21:9eb628d9e164 | 902 | |
wim | 26:bd897a001012 | 903 | |
wim | 26:bd897a001012 | 904 | #if (MCP23008==1) |
wim | 26:bd897a001012 | 905 | // MCP23008 portexpander Init |
wim | 27:22d5086f6ba6 | 906 | _write_register(IODIR, 0x00); // All outputs |
wim | 27:22d5086f6ba6 | 907 | _write_register(IPOL, 0x00); // No reverse polarity |
wim | 27:22d5086f6ba6 | 908 | _write_register(GPINTEN, 0x00); // No interrupt |
wim | 27:22d5086f6ba6 | 909 | _write_register(DEFVAL, 0x00); // Default value to compare against for interrupts |
wim | 27:22d5086f6ba6 | 910 | _write_register(INTCON, 0x00); // No interrupt on changes |
wim | 27:22d5086f6ba6 | 911 | _write_register(IOCON, 0x00); // Interrupt polarity |
wim | 27:22d5086f6ba6 | 912 | _write_register(GPPU, 0x00); // No Pullup |
wim | 27:22d5086f6ba6 | 913 | _write_register(INTF, 0x00); // |
wim | 27:22d5086f6ba6 | 914 | _write_register(INTCAP, 0x00); // |
wim | 27:22d5086f6ba6 | 915 | _write_register(GPIO, 0x00); // Output/Input pins |
wim | 27:22d5086f6ba6 | 916 | _write_register(OLAT, 0x00); // Output Latch |
wim | 26:bd897a001012 | 917 | |
wim | 21:9eb628d9e164 | 918 | // Init the portexpander bus |
wim | 21:9eb628d9e164 | 919 | _lcd_bus = D_LCD_BUS_DEF; |
wim | 21:9eb628d9e164 | 920 | |
wim | 21:9eb628d9e164 | 921 | // write the new data to the portexpander |
wim | 26:bd897a001012 | 922 | _write_register(GPIO, _lcd_bus); |
wim | 26:bd897a001012 | 923 | #else |
wim | 26:bd897a001012 | 924 | // PCF8574 of PCF8574A portexpander |
wim | 26:bd897a001012 | 925 | |
wim | 26:bd897a001012 | 926 | // Init the portexpander bus |
wim | 26:bd897a001012 | 927 | _lcd_bus = D_LCD_BUS_DEF; |
wim | 26:bd897a001012 | 928 | |
wim | 26:bd897a001012 | 929 | // write the new data to the portexpander |
wim | 21:9eb628d9e164 | 930 | _i2c->write(_slaveAddress, &_lcd_bus, 1); |
wim | 26:bd897a001012 | 931 | #endif |
wim | 21:9eb628d9e164 | 932 | |
wim | 21:9eb628d9e164 | 933 | _init(); |
wim | 21:9eb628d9e164 | 934 | |
wim | 21:9eb628d9e164 | 935 | } |
wim | 21:9eb628d9e164 | 936 | |
wim | 21:9eb628d9e164 | 937 | // Set E pin (or E2 pin) |
wim | 21:9eb628d9e164 | 938 | // Used for mbed pins, I2C bus expander or SPI shiftregister |
wim | 21:9eb628d9e164 | 939 | void TextLCD_I2C::_setEnable(bool value) { |
wim | 21:9eb628d9e164 | 940 | |
wim | 22:35742ec80c24 | 941 | if(_ctrl_idx==_LCDCtrl_0) { |
wim | 26:bd897a001012 | 942 | if (value) { |
wim | 22:35742ec80c24 | 943 | _lcd_bus |= D_LCD_E; // Set E bit |
wim | 26:bd897a001012 | 944 | } |
wim | 26:bd897a001012 | 945 | else { |
wim | 22:35742ec80c24 | 946 | _lcd_bus &= ~D_LCD_E; // Reset E bit |
wim | 26:bd897a001012 | 947 | } |
wim | 22:35742ec80c24 | 948 | } |
wim | 22:35742ec80c24 | 949 | else { |
wim | 26:bd897a001012 | 950 | if (value) { |
wim | 22:35742ec80c24 | 951 | _lcd_bus |= D_LCD_E2; // Set E2 bit |
wim | 26:bd897a001012 | 952 | } |
wim | 26:bd897a001012 | 953 | else { |
wim | 22:35742ec80c24 | 954 | _lcd_bus &= ~D_LCD_E2; // Reset E2bit |
wim | 26:bd897a001012 | 955 | } |
wim | 26:bd897a001012 | 956 | } |
wim | 26:bd897a001012 | 957 | |
wim | 26:bd897a001012 | 958 | |
wim | 26:bd897a001012 | 959 | #if (MCP23008==1) |
wim | 26:bd897a001012 | 960 | // MCP23008 portexpander |
wim | 26:bd897a001012 | 961 | |
wim | 26:bd897a001012 | 962 | // write the new data to the portexpander |
wim | 26:bd897a001012 | 963 | _write_register(GPIO, _lcd_bus); |
wim | 26:bd897a001012 | 964 | #else |
wim | 26:bd897a001012 | 965 | // PCF8574 of PCF8574A portexpander |
wim | 21:9eb628d9e164 | 966 | |
wim | 22:35742ec80c24 | 967 | // write the new data to the I2C portexpander |
wim | 22:35742ec80c24 | 968 | _i2c->write(_slaveAddress, &_lcd_bus, 1); |
wim | 26:bd897a001012 | 969 | #endif |
wim | 21:9eb628d9e164 | 970 | } |
wim | 21:9eb628d9e164 | 971 | |
wim | 21:9eb628d9e164 | 972 | // Set RS pin |
wim | 21:9eb628d9e164 | 973 | // Used for mbed pins, I2C bus expander or SPI shiftregister |
wim | 21:9eb628d9e164 | 974 | void TextLCD_I2C::_setRS(bool value) { |
wim | 21:9eb628d9e164 | 975 | |
wim | 26:bd897a001012 | 976 | if (value) { |
wim | 22:35742ec80c24 | 977 | _lcd_bus |= D_LCD_RS; // Set RS bit |
wim | 26:bd897a001012 | 978 | } |
wim | 26:bd897a001012 | 979 | else { |
wim | 22:35742ec80c24 | 980 | _lcd_bus &= ~D_LCD_RS; // Reset RS bit |
wim | 26:bd897a001012 | 981 | } |
wim | 26:bd897a001012 | 982 | |
wim | 26:bd897a001012 | 983 | |
wim | 26:bd897a001012 | 984 | #if (MCP23008==1) |
wim | 26:bd897a001012 | 985 | // MCP23008 portexpander |
wim | 26:bd897a001012 | 986 | |
wim | 26:bd897a001012 | 987 | // write the new data to the portexpander |
wim | 26:bd897a001012 | 988 | _write_register(GPIO, _lcd_bus); |
wim | 26:bd897a001012 | 989 | #else |
wim | 26:bd897a001012 | 990 | // PCF8574 of PCF8574A portexpander |
wim | 21:9eb628d9e164 | 991 | |
wim | 22:35742ec80c24 | 992 | // write the new data to the I2C portexpander |
wim | 22:35742ec80c24 | 993 | _i2c->write(_slaveAddress, &_lcd_bus, 1); |
wim | 26:bd897a001012 | 994 | #endif |
wim | 21:9eb628d9e164 | 995 | |
wim | 21:9eb628d9e164 | 996 | } |
wim | 21:9eb628d9e164 | 997 | |
wim | 21:9eb628d9e164 | 998 | // Set BL pin |
wim | 21:9eb628d9e164 | 999 | // Used for mbed pins, I2C bus expander or SPI shiftregister |
wim | 21:9eb628d9e164 | 1000 | void TextLCD_I2C::_setBL(bool value) { |
wim | 21:9eb628d9e164 | 1001 | |
wim | 26:bd897a001012 | 1002 | if (value) { |
wim | 21:9eb628d9e164 | 1003 | _lcd_bus |= D_LCD_BL; // Set BL bit |
wim | 26:bd897a001012 | 1004 | } |
wim | 26:bd897a001012 | 1005 | else { |
wim | 21:9eb628d9e164 | 1006 | _lcd_bus &= ~D_LCD_BL; // Reset BL bit |
wim | 26:bd897a001012 | 1007 | } |
wim | 26:bd897a001012 | 1008 | |
wim | 26:bd897a001012 | 1009 | #if (MCP23008==1) |
wim | 26:bd897a001012 | 1010 | // MCP23008 portexpander |
wim | 26:bd897a001012 | 1011 | |
wim | 26:bd897a001012 | 1012 | // write the new data to the portexpander |
wim | 26:bd897a001012 | 1013 | _write_register(GPIO, _lcd_bus); |
wim | 26:bd897a001012 | 1014 | #else |
wim | 26:bd897a001012 | 1015 | // PCF8574 of PCF8574A portexpander |
wim | 21:9eb628d9e164 | 1016 | |
wim | 21:9eb628d9e164 | 1017 | // write the new data to the I2C portexpander |
wim | 21:9eb628d9e164 | 1018 | _i2c->write(_slaveAddress, &_lcd_bus, 1); |
wim | 26:bd897a001012 | 1019 | #endif |
wim | 21:9eb628d9e164 | 1020 | |
wim | 21:9eb628d9e164 | 1021 | } |
wim | 21:9eb628d9e164 | 1022 | |
wim | 21:9eb628d9e164 | 1023 | |
wim | 21:9eb628d9e164 | 1024 | |
wim | 21:9eb628d9e164 | 1025 | // Place the 4bit data on the databus |
wim | 21:9eb628d9e164 | 1026 | // Used for mbed pins, I2C bus expander or SPI shifregister |
wim | 21:9eb628d9e164 | 1027 | void TextLCD_I2C::_setData(int value) { |
wim | 21:9eb628d9e164 | 1028 | int data; |
wim | 22:35742ec80c24 | 1029 | |
wim | 22:35742ec80c24 | 1030 | // Set bit by bit to support any mapping of expander portpins to LCD pins |
wim | 21:9eb628d9e164 | 1031 | |
wim | 22:35742ec80c24 | 1032 | data = value & 0x0F; |
wim | 26:bd897a001012 | 1033 | if (data & 0x01){ |
wim | 22:35742ec80c24 | 1034 | _lcd_bus |= D_LCD_D4; // Set Databit |
wim | 26:bd897a001012 | 1035 | } |
wim | 26:bd897a001012 | 1036 | else { |
wim | 26:bd897a001012 | 1037 | _lcd_bus &= ~D_LCD_D4; // Reset Databit |
wim | 26:bd897a001012 | 1038 | } |
wim | 21:9eb628d9e164 | 1039 | |
wim | 26:bd897a001012 | 1040 | if (data & 0x02){ |
wim | 22:35742ec80c24 | 1041 | _lcd_bus |= D_LCD_D5; // Set Databit |
wim | 26:bd897a001012 | 1042 | } |
wim | 26:bd897a001012 | 1043 | else { |
wim | 26:bd897a001012 | 1044 | _lcd_bus &= ~D_LCD_D5; // Reset Databit |
wim | 26:bd897a001012 | 1045 | } |
wim | 21:9eb628d9e164 | 1046 | |
wim | 26:bd897a001012 | 1047 | if (data & 0x04) { |
wim | 22:35742ec80c24 | 1048 | _lcd_bus |= D_LCD_D6; // Set Databit |
wim | 26:bd897a001012 | 1049 | } |
wim | 26:bd897a001012 | 1050 | else { |
wim | 26:bd897a001012 | 1051 | _lcd_bus &= ~D_LCD_D6; // Reset Databit |
wim | 26:bd897a001012 | 1052 | } |
wim | 21:9eb628d9e164 | 1053 | |
wim | 26:bd897a001012 | 1054 | if (data & 0x08) { |
wim | 22:35742ec80c24 | 1055 | _lcd_bus |= D_LCD_D7; // Set Databit |
wim | 26:bd897a001012 | 1056 | } |
wim | 26:bd897a001012 | 1057 | else { |
wim | 26:bd897a001012 | 1058 | _lcd_bus &= ~D_LCD_D7; // Reset Databit |
wim | 26:bd897a001012 | 1059 | } |
wim | 21:9eb628d9e164 | 1060 | |
wim | 26:bd897a001012 | 1061 | #if (MCP23008==1) |
wim | 26:bd897a001012 | 1062 | // MCP23008 portexpander |
wim | 26:bd897a001012 | 1063 | |
wim | 26:bd897a001012 | 1064 | // write the new data to the portexpander |
wim | 26:bd897a001012 | 1065 | _write_register(GPIO, _lcd_bus); |
wim | 26:bd897a001012 | 1066 | #else |
wim | 26:bd897a001012 | 1067 | // PCF8574 of PCF8574A portexpander |
wim | 26:bd897a001012 | 1068 | |
wim | 22:35742ec80c24 | 1069 | // write the new data to the I2C portexpander |
wim | 26:bd897a001012 | 1070 | _i2c->write(_slaveAddress, &_lcd_bus, 1); |
wim | 26:bd897a001012 | 1071 | #endif |
wim | 22:35742ec80c24 | 1072 | |
wim | 22:35742ec80c24 | 1073 | } |
wim | 21:9eb628d9e164 | 1074 | |
wim | 26:bd897a001012 | 1075 | // Write data to MCP23008 I2C portexpander |
wim | 26:bd897a001012 | 1076 | void TextLCD_I2C::_write_register (int reg, int value) { |
wim | 26:bd897a001012 | 1077 | char data[] = {reg, value}; |
wim | 26:bd897a001012 | 1078 | |
wim | 26:bd897a001012 | 1079 | _i2c->write(_slaveAddress, data, 2); |
wim | 26:bd897a001012 | 1080 | |
wim | 26:bd897a001012 | 1081 | } |
wim | 26:bd897a001012 | 1082 | |
wim | 23:d47f226efb24 | 1083 | //---------- End TextLCD_I2C ------------ |
wim | 21:9eb628d9e164 | 1084 | |
wim | 21:9eb628d9e164 | 1085 | |
wim | 21:9eb628d9e164 | 1086 | |
wim | 23:d47f226efb24 | 1087 | //--------- Start TextLCD_SPI ----------- |
wim | 21:9eb628d9e164 | 1088 | |
wim | 22:35742ec80c24 | 1089 | /** Create a TextLCD interface using an SPI 74595 portexpander |
wim | 22:35742ec80c24 | 1090 | * |
wim | 22:35742ec80c24 | 1091 | * @param spi SPI Bus |
wim | 22:35742ec80c24 | 1092 | * @param cs chip select pin (active low) |
wim | 22:35742ec80c24 | 1093 | * @param type Sets the panel size/addressing mode (default = LCD16x2) |
wim | 22:35742ec80c24 | 1094 | * @param ctrl LCD controller (default = HD44780) |
wim | 22:35742ec80c24 | 1095 | */ |
wim | 21:9eb628d9e164 | 1096 | TextLCD_SPI::TextLCD_SPI(SPI *spi, PinName cs, LCDType type, LCDCtrl ctrl) : |
wim | 21:9eb628d9e164 | 1097 | TextLCD_Base(type, ctrl), |
wim | 21:9eb628d9e164 | 1098 | _spi(spi), |
wim | 21:9eb628d9e164 | 1099 | _cs(cs) { |
wim | 21:9eb628d9e164 | 1100 | |
wim | 21:9eb628d9e164 | 1101 | // Setup the spi for 8 bit data, low steady state clock, |
wim | 21:9eb628d9e164 | 1102 | // rising edge capture, with a 500KHz or 1MHz clock rate |
wim | 21:9eb628d9e164 | 1103 | _spi->format(8,0); |
wim | 21:9eb628d9e164 | 1104 | _spi->frequency(500000); |
wim | 21:9eb628d9e164 | 1105 | //_spi.frequency(1000000); |
wim | 21:9eb628d9e164 | 1106 | |
wim | 21:9eb628d9e164 | 1107 | |
wim | 21:9eb628d9e164 | 1108 | // Init the portexpander bus |
wim | 21:9eb628d9e164 | 1109 | _lcd_bus = D_LCD_BUS_DEF; |
wim | 21:9eb628d9e164 | 1110 | |
wim | 21:9eb628d9e164 | 1111 | // write the new data to the portexpander |
wim | 21:9eb628d9e164 | 1112 | _setCS(false); |
wim | 21:9eb628d9e164 | 1113 | _spi->write(_lcd_bus); |
wim | 21:9eb628d9e164 | 1114 | _setCS(true); |
wim | 21:9eb628d9e164 | 1115 | |
wim | 21:9eb628d9e164 | 1116 | _init(); |
wim | 21:9eb628d9e164 | 1117 | |
wim | 21:9eb628d9e164 | 1118 | } |
wim | 21:9eb628d9e164 | 1119 | |
wim | 21:9eb628d9e164 | 1120 | // Set E pin (or E2 pin) |
wim | 21:9eb628d9e164 | 1121 | // Used for mbed pins, I2C bus expander or SPI shiftregister |
wim | 21:9eb628d9e164 | 1122 | void TextLCD_SPI::_setEnable(bool value) { |
wim | 21:9eb628d9e164 | 1123 | |
wim | 22:35742ec80c24 | 1124 | if(_ctrl_idx==_LCDCtrl_0) { |
wim | 26:bd897a001012 | 1125 | if (value) { |
wim | 22:35742ec80c24 | 1126 | _lcd_bus |= D_LCD_E; // Set E bit |
wim | 26:bd897a001012 | 1127 | } |
wim | 26:bd897a001012 | 1128 | else { |
wim | 22:35742ec80c24 | 1129 | _lcd_bus &= ~D_LCD_E; // Reset E bit |
wim | 26:bd897a001012 | 1130 | } |
wim | 22:35742ec80c24 | 1131 | } |
wim | 22:35742ec80c24 | 1132 | else { |
wim | 26:bd897a001012 | 1133 | if (value) { |
wim | 22:35742ec80c24 | 1134 | _lcd_bus |= D_LCD_E2; // Set E2 bit |
wim | 26:bd897a001012 | 1135 | } |
wim | 26:bd897a001012 | 1136 | else { |
wim | 22:35742ec80c24 | 1137 | _lcd_bus &= ~D_LCD_E2; // Reset E2 bit |
wim | 26:bd897a001012 | 1138 | } |
wim | 22:35742ec80c24 | 1139 | } |
wim | 21:9eb628d9e164 | 1140 | |
wim | 22:35742ec80c24 | 1141 | // write the new data to the SPI portexpander |
wim | 22:35742ec80c24 | 1142 | _setCS(false); |
wim | 22:35742ec80c24 | 1143 | _spi->write(_lcd_bus); |
wim | 22:35742ec80c24 | 1144 | _setCS(true); |
wim | 21:9eb628d9e164 | 1145 | |
wim | 21:9eb628d9e164 | 1146 | } |
wim | 21:9eb628d9e164 | 1147 | |
wim | 21:9eb628d9e164 | 1148 | // Set RS pin |
wim | 21:9eb628d9e164 | 1149 | // Used for mbed pins, I2C bus expander or SPI shiftregister |
wim | 21:9eb628d9e164 | 1150 | void TextLCD_SPI::_setRS(bool value) { |
wim | 21:9eb628d9e164 | 1151 | |
wim | 22:35742ec80c24 | 1152 | if (value) { |
wim | 21:9eb628d9e164 | 1153 | _lcd_bus |= D_LCD_RS; // Set RS bit |
wim | 22:35742ec80c24 | 1154 | } |
wim | 22:35742ec80c24 | 1155 | else { |
wim | 21:9eb628d9e164 | 1156 | _lcd_bus &= ~D_LCD_RS; // Reset RS bit |
wim | 22:35742ec80c24 | 1157 | } |
wim | 21:9eb628d9e164 | 1158 | |
wim | 21:9eb628d9e164 | 1159 | // write the new data to the SPI portexpander |
wim | 21:9eb628d9e164 | 1160 | _setCS(false); |
wim | 21:9eb628d9e164 | 1161 | _spi->write(_lcd_bus); |
wim | 21:9eb628d9e164 | 1162 | _setCS(true); |
wim | 21:9eb628d9e164 | 1163 | |
wim | 21:9eb628d9e164 | 1164 | } |
wim | 21:9eb628d9e164 | 1165 | |
wim | 21:9eb628d9e164 | 1166 | // Set BL pin |
wim | 21:9eb628d9e164 | 1167 | // Used for mbed pins, I2C bus expander or SPI shiftregister |
wim | 21:9eb628d9e164 | 1168 | void TextLCD_SPI::_setBL(bool value) { |
wim | 21:9eb628d9e164 | 1169 | |
wim | 22:35742ec80c24 | 1170 | if (value) { |
wim | 21:9eb628d9e164 | 1171 | _lcd_bus |= D_LCD_BL; // Set BL bit |
wim | 22:35742ec80c24 | 1172 | } |
wim | 22:35742ec80c24 | 1173 | else { |
wim | 21:9eb628d9e164 | 1174 | _lcd_bus &= ~D_LCD_BL; // Reset BL bit |
wim | 22:35742ec80c24 | 1175 | } |
wim | 21:9eb628d9e164 | 1176 | |
wim | 21:9eb628d9e164 | 1177 | // write the new data to the SPI portexpander |
wim | 21:9eb628d9e164 | 1178 | _setCS(false); |
wim | 21:9eb628d9e164 | 1179 | _spi->write(_lcd_bus); |
wim | 21:9eb628d9e164 | 1180 | _setCS(true); |
wim | 21:9eb628d9e164 | 1181 | |
wim | 21:9eb628d9e164 | 1182 | } |
wim | 21:9eb628d9e164 | 1183 | |
wim | 21:9eb628d9e164 | 1184 | |
wim | 21:9eb628d9e164 | 1185 | |
wim | 21:9eb628d9e164 | 1186 | // Place the 4bit data on the databus |
wim | 21:9eb628d9e164 | 1187 | // Used for mbed pins, I2C bus expander or SPI shiftregister |
wim | 21:9eb628d9e164 | 1188 | void TextLCD_SPI::_setData(int value) { |
wim | 21:9eb628d9e164 | 1189 | int data; |
wim | 21:9eb628d9e164 | 1190 | |
wim | 22:35742ec80c24 | 1191 | // Set bit by bit to support any mapping of expander portpins to LCD pins |
wim | 22:35742ec80c24 | 1192 | |
wim | 22:35742ec80c24 | 1193 | data = value & 0x0F; |
wim | 26:bd897a001012 | 1194 | if (data & 0x01) { |
wim | 22:35742ec80c24 | 1195 | _lcd_bus |= D_LCD_D4; // Set Databit |
wim | 26:bd897a001012 | 1196 | } |
wim | 26:bd897a001012 | 1197 | else { |
wim | 22:35742ec80c24 | 1198 | _lcd_bus &= ~D_LCD_D4; // Reset Databit |
wim | 26:bd897a001012 | 1199 | } |
wim | 26:bd897a001012 | 1200 | |
wim | 26:bd897a001012 | 1201 | if (data & 0x02) { |
wim | 22:35742ec80c24 | 1202 | _lcd_bus |= D_LCD_D5; // Set Databit |
wim | 26:bd897a001012 | 1203 | } |
wim | 26:bd897a001012 | 1204 | else { |
wim | 22:35742ec80c24 | 1205 | _lcd_bus &= ~D_LCD_D5; // Reset Databit |
wim | 26:bd897a001012 | 1206 | } |
wim | 26:bd897a001012 | 1207 | |
wim | 26:bd897a001012 | 1208 | if (data & 0x04) { |
wim | 22:35742ec80c24 | 1209 | _lcd_bus |= D_LCD_D6; // Set Databit |
wim | 26:bd897a001012 | 1210 | } |
wim | 26:bd897a001012 | 1211 | else { |
wim | 22:35742ec80c24 | 1212 | _lcd_bus &= ~D_LCD_D6; // Reset Databit |
wim | 26:bd897a001012 | 1213 | } |
wim | 26:bd897a001012 | 1214 | |
wim | 26:bd897a001012 | 1215 | if (data & 0x08) { |
wim | 22:35742ec80c24 | 1216 | _lcd_bus |= D_LCD_D7; // Set Databit |
wim | 26:bd897a001012 | 1217 | } |
wim | 26:bd897a001012 | 1218 | else { |
wim | 26:bd897a001012 | 1219 | _lcd_bus &= ~D_LCD_D7; // Reset Databit |
wim | 26:bd897a001012 | 1220 | } |
wim | 21:9eb628d9e164 | 1221 | |
wim | 22:35742ec80c24 | 1222 | // write the new data to the SPI portexpander |
wim | 22:35742ec80c24 | 1223 | _setCS(false); |
wim | 22:35742ec80c24 | 1224 | _spi->write(_lcd_bus); |
wim | 22:35742ec80c24 | 1225 | _setCS(true); |
wim | 21:9eb628d9e164 | 1226 | |
wim | 21:9eb628d9e164 | 1227 | } |
wim | 21:9eb628d9e164 | 1228 | |
wim | 21:9eb628d9e164 | 1229 | |
wim | 21:9eb628d9e164 | 1230 | // Set CS line. |
wim | 21:9eb628d9e164 | 1231 | // Only used for SPI bus |
wim | 21:9eb628d9e164 | 1232 | void TextLCD_SPI::_setCS(bool value) { |
wim | 21:9eb628d9e164 | 1233 | |
wim | 21:9eb628d9e164 | 1234 | if (value) { |
wim | 21:9eb628d9e164 | 1235 | _cs = 1; // Set CS pin |
wim | 21:9eb628d9e164 | 1236 | } |
wim | 22:35742ec80c24 | 1237 | else { |
wim | 21:9eb628d9e164 | 1238 | _cs = 0; // Reset CS pin |
wim | 22:35742ec80c24 | 1239 | } |
wim | 21:9eb628d9e164 | 1240 | } |
wim | 21:9eb628d9e164 | 1241 | |
wim | 23:d47f226efb24 | 1242 | //---------- End TextLCD_SPI ------------ |
wim | 22:35742ec80c24 | 1243 | |
wim | 22:35742ec80c24 | 1244 | |
wim | 25:6162b31128c9 | 1245 | //--------- Start TextLCD_SPI_N --------- |
Sissors | 24:fb3399713710 | 1246 | |
wim | 25:6162b31128c9 | 1247 | /** Create a TextLCD interface using a controller with a native SPI interface |
Sissors | 24:fb3399713710 | 1248 | * |
Sissors | 24:fb3399713710 | 1249 | * @param spi SPI Bus |
Sissors | 24:fb3399713710 | 1250 | * @param cs chip select pin (active low) |
wim | 25:6162b31128c9 | 1251 | * @param rs Instruction/data control line |
Sissors | 24:fb3399713710 | 1252 | * @param type Sets the panel size/addressing mode (default = LCD16x2) |
wim | 25:6162b31128c9 | 1253 | * @param bl Backlight control line (optional, default = NC) |
wim | 26:bd897a001012 | 1254 | * @param ctrl LCD controller (default = ST7032_3V3) |
wim | 25:6162b31128c9 | 1255 | */ |
wim | 25:6162b31128c9 | 1256 | TextLCD_SPI_N::TextLCD_SPI_N(SPI *spi, PinName cs, PinName rs, LCDType type, PinName bl, LCDCtrl ctrl) : |
wim | 25:6162b31128c9 | 1257 | TextLCD_Base(type, ctrl), |
wim | 25:6162b31128c9 | 1258 | _spi(spi), |
wim | 25:6162b31128c9 | 1259 | _cs(cs), |
wim | 25:6162b31128c9 | 1260 | _rs(rs) { |
Sissors | 24:fb3399713710 | 1261 | |
Sissors | 24:fb3399713710 | 1262 | // Setup the spi for 8 bit data, low steady state clock, |
Sissors | 24:fb3399713710 | 1263 | // rising edge capture, with a 500KHz or 1MHz clock rate |
Sissors | 24:fb3399713710 | 1264 | _spi->format(8,0); |
Sissors | 24:fb3399713710 | 1265 | _spi->frequency(1000000); |
Sissors | 24:fb3399713710 | 1266 | |
Sissors | 24:fb3399713710 | 1267 | // The hardware Backlight pin is optional. Test and make sure whether it exists or not to prevent illegal access. |
Sissors | 24:fb3399713710 | 1268 | if (bl != NC) { |
Sissors | 24:fb3399713710 | 1269 | _bl = new DigitalOut(bl); //Construct new pin |
Sissors | 24:fb3399713710 | 1270 | _bl->write(0); //Deactivate |
Sissors | 24:fb3399713710 | 1271 | } |
Sissors | 24:fb3399713710 | 1272 | else { |
Sissors | 24:fb3399713710 | 1273 | // No Hardware Backlight pin |
Sissors | 24:fb3399713710 | 1274 | _bl = NULL; //Construct dummy pin |
Sissors | 24:fb3399713710 | 1275 | } |
Sissors | 24:fb3399713710 | 1276 | |
Sissors | 24:fb3399713710 | 1277 | _init(); |
Sissors | 24:fb3399713710 | 1278 | } |
Sissors | 24:fb3399713710 | 1279 | |
wim | 25:6162b31128c9 | 1280 | TextLCD_SPI_N::~TextLCD_SPI_N() { |
Sissors | 24:fb3399713710 | 1281 | if (_bl != NULL) {delete _bl;} // BL pin |
Sissors | 24:fb3399713710 | 1282 | } |
Sissors | 24:fb3399713710 | 1283 | |
Sissors | 24:fb3399713710 | 1284 | // Not used in this mode |
wim | 25:6162b31128c9 | 1285 | void TextLCD_SPI_N::_setEnable(bool value) { |
Sissors | 24:fb3399713710 | 1286 | } |
Sissors | 24:fb3399713710 | 1287 | |
Sissors | 24:fb3399713710 | 1288 | // Set RS pin |
Sissors | 24:fb3399713710 | 1289 | // Used for mbed pins, I2C bus expander or SPI shiftregister |
wim | 25:6162b31128c9 | 1290 | void TextLCD_SPI_N::_setRS(bool value) { |
Sissors | 24:fb3399713710 | 1291 | _rs = value; |
Sissors | 24:fb3399713710 | 1292 | } |
Sissors | 24:fb3399713710 | 1293 | |
Sissors | 24:fb3399713710 | 1294 | // Set BL pin |
wim | 25:6162b31128c9 | 1295 | void TextLCD_SPI_N::_setBL(bool value) { |
wim | 26:bd897a001012 | 1296 | if (_bl) { |
Sissors | 24:fb3399713710 | 1297 | _bl->write(value); |
wim | 26:bd897a001012 | 1298 | } |
Sissors | 24:fb3399713710 | 1299 | } |
Sissors | 24:fb3399713710 | 1300 | |
Sissors | 24:fb3399713710 | 1301 | // Write a byte using SPI |
wim | 25:6162b31128c9 | 1302 | void TextLCD_SPI_N::_writeByte(int value) { |
Sissors | 24:fb3399713710 | 1303 | _cs = 0; |
Sissors | 24:fb3399713710 | 1304 | wait_us(1); |
Sissors | 24:fb3399713710 | 1305 | _spi->write(value); |
Sissors | 24:fb3399713710 | 1306 | wait_us(1); |
Sissors | 24:fb3399713710 | 1307 | _cs = 1; |
Sissors | 24:fb3399713710 | 1308 | } |
Sissors | 24:fb3399713710 | 1309 | |
Sissors | 24:fb3399713710 | 1310 | // Not used in this mode |
wim | 25:6162b31128c9 | 1311 | void TextLCD_SPI_N::_setData(int value) { |
Sissors | 24:fb3399713710 | 1312 | } |
Sissors | 24:fb3399713710 | 1313 | |
Sissors | 24:fb3399713710 | 1314 | |
wim | 25:6162b31128c9 | 1315 | //-------- End TextLCD_SPI_N ------------ |
wim | 21:9eb628d9e164 | 1316 | |
wim | 21:9eb628d9e164 | 1317 | |
wim | 21:9eb628d9e164 | 1318 | |
wim | 21:9eb628d9e164 | 1319 | |
wim | 21:9eb628d9e164 | 1320 |