In TextLCD_I2C_N Class, added void setContrast(unsigned char c) function as temporary. This is for ST7032i non-volume type contrast control.
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In TextLCD_I2C_N Class, added void setContrast(unsigned char c) function as temporary.
TextLCD.cpp@29:986538f94abe, 2014-06-15 (annotated)
- Committer:
- kenjiArai
- Date:
- Sun Jun 15 03:22:32 2014 +0000
- Revision:
- 29:986538f94abe
- Parent:
- 28:30fa94f7341c
- Child:
- 30:4c57a022a56c
Added setContrast() function for ST7032i
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 |
kenjiArai | 29:986538f94abe | 12 | * 2014, v10: WH, Added Class for Native I2C controllers such as ST7032i, Added support for MCP23008 I2C portexpander, Added support for Adafruit module |
kenjiArai | 29:986538f94abe | 13 | * 2014, v11: SW, added setContrast function for ST7032i only by JH1PJL |
simon | 1:ac48b187213c | 14 | * |
simon | 1:ac48b187213c | 15 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
simon | 1:ac48b187213c | 16 | * of this software and associated documentation files (the "Software"), to deal |
simon | 1:ac48b187213c | 17 | * in the Software without restriction, including without limitation the rights |
simon | 1:ac48b187213c | 18 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
simon | 1:ac48b187213c | 19 | * copies of the Software, and to permit persons to whom the Software is |
simon | 1:ac48b187213c | 20 | * furnished to do so, subject to the following conditions: |
simon | 1:ac48b187213c | 21 | * |
simon | 1:ac48b187213c | 22 | * The above copyright notice and this permission notice shall be included in |
simon | 1:ac48b187213c | 23 | * all copies or substantial portions of the Software. |
simon | 1:ac48b187213c | 24 | * |
simon | 1:ac48b187213c | 25 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
simon | 1:ac48b187213c | 26 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
simon | 1:ac48b187213c | 27 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
simon | 1:ac48b187213c | 28 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
simon | 1:ac48b187213c | 29 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
simon | 1:ac48b187213c | 30 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
simon | 1:ac48b187213c | 31 | * THE SOFTWARE. |
simon | 1:ac48b187213c | 32 | */ |
simon | 1:ac48b187213c | 33 | |
simon | 1:ac48b187213c | 34 | #include "TextLCD.h" |
simon | 1:ac48b187213c | 35 | #include "mbed.h" |
simon | 1:ac48b187213c | 36 | |
wim | 21:9eb628d9e164 | 37 | /** Create a TextLCD_Base interface |
wim | 15:b70ebfffb258 | 38 | * |
wim | 21:9eb628d9e164 | 39 | * @param type Sets the panel size/addressing mode (default = LCD16x2) |
wim | 21:9eb628d9e164 | 40 | * @param ctrl LCD controller (default = HD44780) |
wim | 15:b70ebfffb258 | 41 | */ |
wim | 21:9eb628d9e164 | 42 | TextLCD_Base::TextLCD_Base(LCDType type, LCDCtrl ctrl) : _type(type), _ctrl(ctrl) { |
wim | 14:0c32b66b14b8 | 43 | } |
wim | 14:0c32b66b14b8 | 44 | |
wim | 14:0c32b66b14b8 | 45 | |
wim | 21:9eb628d9e164 | 46 | /** Init the LCD Controller(s) |
wim | 21:9eb628d9e164 | 47 | * Clear display |
wim | 21:9eb628d9e164 | 48 | */ |
wim | 21:9eb628d9e164 | 49 | void TextLCD_Base::_init() { |
wim | 15:b70ebfffb258 | 50 | |
wim | 15:b70ebfffb258 | 51 | // Select and configure second LCD controller when needed |
wim | 15:b70ebfffb258 | 52 | if(_type==LCD40x4) { |
wim | 27:22d5086f6ba6 | 53 | _ctrl_idx=_LCDCtrl_1; // Select 2nd controller |
wim | 15:b70ebfffb258 | 54 | |
wim | 27:22d5086f6ba6 | 55 | _initCtrl(); // Init 2nd controller |
wim | 15:b70ebfffb258 | 56 | |
wim | 15:b70ebfffb258 | 57 | } |
wim | 15:b70ebfffb258 | 58 | |
wim | 15:b70ebfffb258 | 59 | // Select and configure primary LCD controller |
wim | 27:22d5086f6ba6 | 60 | _ctrl_idx=_LCDCtrl_0; // Select primary controller |
wim | 13:24506ba22480 | 61 | |
wim | 19:c747b9e2e7b8 | 62 | _initCtrl(); // Init primary controller |
wim | 28:30fa94f7341c | 63 | |
wim | 28:30fa94f7341c | 64 | // Reset Cursor location |
wim | 28:30fa94f7341c | 65 | _row=0; |
wim | 28:30fa94f7341c | 66 | _column=0; |
wim | 15:b70ebfffb258 | 67 | } |
wim | 15:b70ebfffb258 | 68 | |
wim | 21:9eb628d9e164 | 69 | /** Init the LCD controller |
wim | 21:9eb628d9e164 | 70 | * 4-bit mode, number of lines, fonttype, no cursor etc |
wim | 21:9eb628d9e164 | 71 | * |
wim | 21:9eb628d9e164 | 72 | */ |
wim | 21:9eb628d9e164 | 73 | void TextLCD_Base::_initCtrl() { |
wim | 15:b70ebfffb258 | 74 | |
wim | 26:bd897a001012 | 75 | this->_setRS(false); // command mode |
wim | 13:24506ba22480 | 76 | |
wim | 26:bd897a001012 | 77 | wait_ms(20); // Wait 20ms to ensure powered up |
simon | 1:ac48b187213c | 78 | |
wim | 17:652ab113bc2e | 79 | // send "Display Settings" 3 times (Only top nibble of 0x30 as we've got 4-bit bus) |
wim | 17:652ab113bc2e | 80 | for (int i=0; i<3; i++) { |
wim | 17:652ab113bc2e | 81 | _writeNibble(0x3); |
wim | 20:e0da005a777f | 82 | wait_ms(15); // This command takes 1.64ms, so wait for it |
wim | 17:652ab113bc2e | 83 | } |
wim | 17:652ab113bc2e | 84 | _writeNibble(0x2); // 4-bit mode |
wim | 17:652ab113bc2e | 85 | wait_us(40); // most instructions take 40us |
wim | 18:bd65dc10f27f | 86 | |
wim | 18:bd65dc10f27f | 87 | // Display is now in 4-bit mode |
wim | 27:22d5086f6ba6 | 88 | // Note: 4 bit mode is ignored for native SPI and I2C devices |
wim | 25:6162b31128c9 | 89 | |
wim | 19:c747b9e2e7b8 | 90 | // Device specific initialisations for DC/DC converter to generate VLCD or VLED |
wim | 19:c747b9e2e7b8 | 91 | switch (_ctrl) { |
wim | 20:e0da005a777f | 92 | case ST7036: |
wim | 19:c747b9e2e7b8 | 93 | // ST7036 controller: Initialise Voltage booster for VLCD. VDD=5V |
wim | 19:c747b9e2e7b8 | 94 | // Note: supports 1,2 or 3 lines |
wim | 28:30fa94f7341c | 95 | _writeCommand(0x29); // 4-bit Databus, 2 Lines, Select Instruction Set = 1 |
wim | 28:30fa94f7341c | 96 | wait_ms(30); // > 26,3ms |
wim | 28:30fa94f7341c | 97 | _writeCommand(0x14); // Bias: 1/5, 2-Lines LCD |
wim | 28:30fa94f7341c | 98 | // _writeCommand(0x15); // Bias: 1/5, 3-Lines LCD |
wim | 28:30fa94f7341c | 99 | wait_ms(30); // > 26,3ms |
wim | 28:30fa94f7341c | 100 | _writeCommand(0x55); // Icon off, Booster on, Set Contrast C5, C4 |
wim | 28:30fa94f7341c | 101 | wait_ms(30); // > 26,3ms |
wim | 28:30fa94f7341c | 102 | _writeCommand(0x6D); // Voltagefollower On, Ampl ratio Rab2, Rab1, Rab0 |
wim | 28:30fa94f7341c | 103 | wait_ms(200); // > 200ms! |
wim | 28:30fa94f7341c | 104 | _writeCommand(0x78); // Set Contrast C3, C2, C1, C0 |
wim | 28:30fa94f7341c | 105 | wait_ms(30); // > 26,3ms |
wim | 28:30fa94f7341c | 106 | _writeCommand(0x28); // Return to Instruction Set = 0 |
wim | 25:6162b31128c9 | 107 | wait_ms(50); |
wim | 19:c747b9e2e7b8 | 108 | break; |
wim | 25:6162b31128c9 | 109 | |
wim | 26:bd897a001012 | 110 | case ST7032_3V3: |
wim | 26:bd897a001012 | 111 | // ST7032 controller: Initialise Voltage booster for VLCD. VDD=3V3 |
wim | 27:22d5086f6ba6 | 112 | |
wim | 28:30fa94f7341c | 113 | // _writeCommand(0x39); //FUNCTION SET 8 bit,N=1 2-line display mode,5*7dot, Select Instruction Set = 1 |
wim | 28:30fa94f7341c | 114 | _writeCommand(0x29); //FUNCTION SET 4 bit, N=1 2-line display mode, 5*7dot, Select Instruction Set = 1 |
wim | 28:30fa94f7341c | 115 | //Note: 4 bit mode is ignored for native SPI and I2C devices |
wim | 28:30fa94f7341c | 116 | |
wim | 28:30fa94f7341c | 117 | _writeCommand(0x1C); //Internal OSC frequency adjustment Framefreq=183HZ, bias will be 1/4 |
wim | 28:30fa94f7341c | 118 | |
kenjiArai | 29:986538f94abe | 119 | _writeCommand(0x70); //Contrast control low byte |
wim | 28:30fa94f7341c | 120 | |
wim | 28:30fa94f7341c | 121 | _writeCommand(0x57); //booster circuit is turned on. /ICON display off. /Contrast control high byte |
wim | 28:30fa94f7341c | 122 | wait_ms(10); // Wait 10ms to ensure powered up |
wim | 28:30fa94f7341c | 123 | |
wim | 28:30fa94f7341c | 124 | _writeCommand(0x6C); //Follower control |
wim | 28:30fa94f7341c | 125 | wait_ms(10); // Wait 10ms to ensure powered up |
wim | 28:30fa94f7341c | 126 | |
wim | 28:30fa94f7341c | 127 | // _writeCommand(0x38); //FUNCTION SET 8 bit,N=1 2-line display mode,5*7dot, Return to Instruction Set = 0 |
wim | 28:30fa94f7341c | 128 | _writeCommand(0x28); //FUNCTION SET 4 bit, N=1 2-line display mode, 5*7dot, Return to Instruction Set = 0 |
wim | 28:30fa94f7341c | 129 | //Note: 4 bit mode is ignored for native SPI and I2C devices |
wim | 28:30fa94f7341c | 130 | |
wim | 28:30fa94f7341c | 131 | _writeCommand(0x14); // Cursor or Display shift 0001 S/C R/L x x |
wim | 28:30fa94f7341c | 132 | // S/C=0 Cursor moves |
wim | 28:30fa94f7341c | 133 | // R/L=1 Right |
wim | 28:30fa94f7341c | 134 | // |
wim | 26:bd897a001012 | 135 | break; |
wim | 26:bd897a001012 | 136 | |
wim | 28:30fa94f7341c | 137 | |
wim | 26:bd897a001012 | 138 | case ST7032_5V: |
wim | 26:bd897a001012 | 139 | // ST7032 controller: Disable Voltage booster for VLCD. VDD=5V |
wim | 28:30fa94f7341c | 140 | // _writeCommand(0x39); //FUNCTION SET 8 bit,N=1 2-line display mode,5*7dot, Instruction Set = 1 |
wim | 28:30fa94f7341c | 141 | _writeCommand(0x29); //FUNCTION SET 4 bit, N=1 2-line display mode, 5*7dot, Select Instruction Set = 1 |
wim | 28:30fa94f7341c | 142 | //Note: 4 bit mode is ignored for native SPI and I2C devices |
wim | 28:30fa94f7341c | 143 | |
wim | 28:30fa94f7341c | 144 | _writeCommand(0x1C); //Internal OSC frequency adjustment 183HZ, bias will be 1/4 |
wim | 28:30fa94f7341c | 145 | |
wim | 28:30fa94f7341c | 146 | _writeCommand(0x73); //Contrast control low byte |
wim | 28:30fa94f7341c | 147 | |
wim | 28:30fa94f7341c | 148 | _writeCommand(0x53); //booster circuit is turned off. /ICON display off. /Contrast control high byte |
wim | 28:30fa94f7341c | 149 | wait_ms(10); // Wait 10ms to ensure powered up |
wim | 28:30fa94f7341c | 150 | |
wim | 28:30fa94f7341c | 151 | _writeCommand(0x6C); //Follower control |
wim | 28:30fa94f7341c | 152 | wait_ms(10); // Wait 10ms to ensure powered up |
wim | 28:30fa94f7341c | 153 | |
wim | 28:30fa94f7341c | 154 | // _writeCommand(0x38); //FUNCTION SET 8 bit,N=1 2-line display mode,5*7dot, Instruction Set = 0 |
wim | 28:30fa94f7341c | 155 | _writeCommand(0x28); //FUNCTION SET 4 bit, N=1 2-line display mode, 5*7dot, Return to Instruction Set = 0 |
wim | 28:30fa94f7341c | 156 | //Note: 4 bit mode is ignored for native SPI and I2C devices |
wim | 28:30fa94f7341c | 157 | |
Sissors | 24:fb3399713710 | 158 | break; |
wim | 25:6162b31128c9 | 159 | |
wim | 19:c747b9e2e7b8 | 160 | case WS0010: |
wim | 19:c747b9e2e7b8 | 161 | // WS0010 OLED controller: Initialise DC/DC Voltage converter for LEDs |
wim | 19:c747b9e2e7b8 | 162 | // Note: supports 1 or 2 lines (and 16x100 graphics) |
wim | 19:c747b9e2e7b8 | 163 | // supports 4 fonts (English/Japanese (default), Western European-I, English/Russian, Western European-II) |
wim | 19:c747b9e2e7b8 | 164 | // Cursor/Disp shift set 0001 SC RL 0 0 |
wim | 19:c747b9e2e7b8 | 165 | // |
wim | 19:c747b9e2e7b8 | 166 | // Mode en Power set 0001 GC PWR 1 1 |
wim | 19:c747b9e2e7b8 | 167 | // GC = 0 (Graph Mode=1, Char Mode=0) |
wim | 19:c747b9e2e7b8 | 168 | // PWR = (DC/DC On/Off) |
wim | 19:c747b9e2e7b8 | 169 | |
wim | 25:6162b31128c9 | 170 | //_writeCommand(0x13); // DC/DC off |
wim | 28:30fa94f7341c | 171 | _writeCommand(0x17); // DC/DC on |
wim | 28:30fa94f7341c | 172 | wait_ms(10); // Wait 10ms to ensure powered up |
wim | 25:6162b31128c9 | 173 | |
wim | 19:c747b9e2e7b8 | 174 | break; |
wim | 19:c747b9e2e7b8 | 175 | |
wim | 19:c747b9e2e7b8 | 176 | default: |
wim | 19:c747b9e2e7b8 | 177 | // Devices that do not use DC/DC Voltage converters but external VLCD |
wim | 19:c747b9e2e7b8 | 178 | break; |
wim | 19:c747b9e2e7b8 | 179 | } |
wim | 14:0c32b66b14b8 | 180 | |
wim | 18:bd65dc10f27f | 181 | // Initialise Display configuration |
wim | 10:dd9b3a696acd | 182 | switch (_type) { |
wim | 10:dd9b3a696acd | 183 | case LCD8x1: |
wim | 18:bd65dc10f27f | 184 | case LCD8x2B: |
wim | 18:bd65dc10f27f | 185 | //8x1 is a regular 1 line display |
wim | 18:bd65dc10f27f | 186 | //8x2B is a special case of 16x1 |
wim | 15:b70ebfffb258 | 187 | _writeCommand(0x20); // Function set 001 DL N F - - |
wim | 15:b70ebfffb258 | 188 | // DL=0 (4 bits bus) |
wim | 13:24506ba22480 | 189 | // N=0 (1 line) |
wim | 13:24506ba22480 | 190 | // F=0 (5x7 dots font) |
wim | 10:dd9b3a696acd | 191 | break; |
wim | 10:dd9b3a696acd | 192 | |
wim | 10:dd9b3a696acd | 193 | case LCD24x4: |
wim | 10:dd9b3a696acd | 194 | // Special mode for KS0078 |
wim | 15:b70ebfffb258 | 195 | _writeCommand(0x2A); // Function set 001 DL N RE DH REV |
wim | 15:b70ebfffb258 | 196 | // DL=0 (4 bits bus) |
wim | 13:24506ba22480 | 197 | // N=1 (Dont care for KS0078) |
wim | 13:24506ba22480 | 198 | // RE=0 (Extended Regs, special mode for KS0078) |
wim | 13:24506ba22480 | 199 | // DH=1 (Disp shift, special mode for KS0078) |
wim | 13:24506ba22480 | 200 | // REV=0 (Reverse, special mode for KS0078) |
wim | 10:dd9b3a696acd | 201 | |
wim | 15:b70ebfffb258 | 202 | _writeCommand(0x2E); // Function set 001 DL N RE DH REV |
wim | 15:b70ebfffb258 | 203 | // DL=0 (4 bits bus) |
wim | 13:24506ba22480 | 204 | // N=1 (Dont care for KS0078) |
wim | 13:24506ba22480 | 205 | // RE=1 (Ena Extended Regs, special mode for KS0078) |
wim | 13:24506ba22480 | 206 | // DH=1 (Disp shift, special mode for KS0078) |
wim | 13:24506ba22480 | 207 | // REV=0 (Reverse, special mode for KS0078) |
wim | 10:dd9b3a696acd | 208 | |
wim | 13:24506ba22480 | 209 | _writeCommand(0x09); // Ext Function set 0000 1 FW BW NW |
wim | 13:24506ba22480 | 210 | // FW=0 (5-dot font, special mode for KS0078) |
wim | 13:24506ba22480 | 211 | // BW=0 (Cur BW invert disable, special mode for KS0078) |
wim | 13:24506ba22480 | 212 | // NW=1 (4 Line, special mode for KS0078) |
wim | 10:dd9b3a696acd | 213 | |
wim | 15:b70ebfffb258 | 214 | _writeCommand(0x2A); // Function set 001 DL N RE DH REV |
wim | 15:b70ebfffb258 | 215 | // DL=0 (4 bits bus) |
wim | 13:24506ba22480 | 216 | // N=1 (Dont care for KS0078) |
wim | 13:24506ba22480 | 217 | // RE=0 (Dis. Extended Regs, special mode for KS0078) |
wim | 13:24506ba22480 | 218 | // DH=1 (Disp shift, special mode for KS0078) |
wim | 13:24506ba22480 | 219 | // REV=0 (Reverse, special mode for KS0078) |
wim | 10:dd9b3a696acd | 220 | break; |
wim | 10:dd9b3a696acd | 221 | |
wim | 15:b70ebfffb258 | 222 | // All other LCD types are initialised as 2 Line displays (including LCD40x4) |
wim | 10:dd9b3a696acd | 223 | default: |
wim | 15:b70ebfffb258 | 224 | _writeCommand(0x28); // Function set 001 DL N F - - |
wim | 27:22d5086f6ba6 | 225 | // DL=0 (4 bits bus) |
wim | 27:22d5086f6ba6 | 226 | // Note: 4 bit mode is ignored for native SPI and I2C devices |
wim | 13:24506ba22480 | 227 | // N=1 (2 lines) |
wim | 15:b70ebfffb258 | 228 | // F=0 (5x7 dots font, only option for 2 line display) |
wim | 13:24506ba22480 | 229 | // - (Don't care) |
wim | 10:dd9b3a696acd | 230 | |
wim | 10:dd9b3a696acd | 231 | break; |
wim | 10:dd9b3a696acd | 232 | } |
wim | 10:dd9b3a696acd | 233 | |
wim | 28:30fa94f7341c | 234 | _writeCommand(0x01); // cls, and set cursor to 0 |
wim | 28:30fa94f7341c | 235 | wait_ms(10); // The CLS command takes 1.64 ms. |
wim | 28:30fa94f7341c | 236 | // Since we are not using the Busy flag, Lets be safe and take 10 ms |
wim | 28:30fa94f7341c | 237 | |
wim | 28:30fa94f7341c | 238 | _writeCommand(0x02); // Return Home |
wim | 28:30fa94f7341c | 239 | // Cursor Home, DDRAM Address to Origin |
wim | 28:30fa94f7341c | 240 | |
wim | 28:30fa94f7341c | 241 | _writeCommand(0x06); // Entry Mode 0000 0 1 I/D S |
wim | 13:24506ba22480 | 242 | // Cursor Direction and Display Shift |
wim | 28:30fa94f7341c | 243 | // I/D=1 (Cur incr) |
wim | 28:30fa94f7341c | 244 | // S=0 (No display shift) |
wim | 10:dd9b3a696acd | 245 | |
wim | 13:24506ba22480 | 246 | // _writeCommand(0x0C); // Display Ctrl 0000 1 D C B |
wim | 17:652ab113bc2e | 247 | // // Display On, Cursor Off, Blink Off |
wim | 21:9eb628d9e164 | 248 | setCursor(CurOff_BlkOff); |
wim | 21:9eb628d9e164 | 249 | setMode(DispOn); |
simon | 1:ac48b187213c | 250 | } |
simon | 1:ac48b187213c | 251 | |
wim | 8:03116f75b66e | 252 | |
wim | 21:9eb628d9e164 | 253 | /** Clear the screen, Cursor home. |
wim | 21:9eb628d9e164 | 254 | */ |
wim | 21:9eb628d9e164 | 255 | void TextLCD_Base::cls() { |
wim | 15:b70ebfffb258 | 256 | |
wim | 15:b70ebfffb258 | 257 | // Select and configure second LCD controller when needed |
wim | 15:b70ebfffb258 | 258 | if(_type==LCD40x4) { |
wim | 21:9eb628d9e164 | 259 | _ctrl_idx=_LCDCtrl_1; // Select 2nd controller |
wim | 15:b70ebfffb258 | 260 | |
wim | 15:b70ebfffb258 | 261 | // Second LCD controller Cursor always Off |
wim | 21:9eb628d9e164 | 262 | _setCursorAndDisplayMode(_currentMode, CurOff_BlkOff); |
wim | 15:b70ebfffb258 | 263 | |
wim | 15:b70ebfffb258 | 264 | // Second LCD controller Clearscreen |
wim | 27:22d5086f6ba6 | 265 | _writeCommand(0x01); // cls, and set cursor to 0 |
wim | 15:b70ebfffb258 | 266 | wait_ms(10); // The CLS command takes 1.64 ms. |
wim | 15:b70ebfffb258 | 267 | // Since we are not using the Busy flag, Lets be safe and take 10 ms |
wim | 15:b70ebfffb258 | 268 | |
wim | 21:9eb628d9e164 | 269 | _ctrl_idx=_LCDCtrl_0; // Select primary controller |
wim | 15:b70ebfffb258 | 270 | } |
wim | 15:b70ebfffb258 | 271 | |
wim | 15:b70ebfffb258 | 272 | // Primary LCD controller Clearscreen |
wim | 27:22d5086f6ba6 | 273 | _writeCommand(0x01); // cls, and set cursor to 0 |
wim | 15:b70ebfffb258 | 274 | wait_ms(10); // The CLS command takes 1.64 ms. |
wim | 15:b70ebfffb258 | 275 | // Since we are not using the Busy flag, Lets be safe and take 10 ms |
wim | 15:b70ebfffb258 | 276 | |
wim | 15:b70ebfffb258 | 277 | // Restore cursormode on primary LCD controller when needed |
wim | 15:b70ebfffb258 | 278 | if(_type==LCD40x4) { |
wim | 17:652ab113bc2e | 279 | _setCursorAndDisplayMode(_currentMode,_currentCursor); |
wim | 15:b70ebfffb258 | 280 | } |
wim | 15:b70ebfffb258 | 281 | |
wim | 15:b70ebfffb258 | 282 | _row=0; // Reset Cursor location |
wim | 15:b70ebfffb258 | 283 | _column=0; |
simon | 1:ac48b187213c | 284 | } |
simon | 1:ac48b187213c | 285 | |
wim | 21:9eb628d9e164 | 286 | /** Move cursor to selected row and column |
wim | 21:9eb628d9e164 | 287 | */ |
wim | 21:9eb628d9e164 | 288 | void TextLCD_Base::locate(int column, int row) { |
wim | 15:b70ebfffb258 | 289 | |
wim | 15:b70ebfffb258 | 290 | // setAddress() does all the heavy lifting: |
wim | 15:b70ebfffb258 | 291 | // check column and row sanity, |
wim | 15:b70ebfffb258 | 292 | // switch controllers for LCD40x4 if needed |
wim | 15:b70ebfffb258 | 293 | // switch cursor for LCD40x4 if needed |
wim | 15:b70ebfffb258 | 294 | // set the new memory address to show cursor at correct location |
wim | 15:b70ebfffb258 | 295 | setAddress(column, row); |
wim | 15:b70ebfffb258 | 296 | |
wim | 15:b70ebfffb258 | 297 | } |
wim | 15:b70ebfffb258 | 298 | |
wim | 15:b70ebfffb258 | 299 | |
wim | 21:9eb628d9e164 | 300 | /** Write a single character (Stream implementation) |
wim | 21:9eb628d9e164 | 301 | */ |
wim | 21:9eb628d9e164 | 302 | int TextLCD_Base::_putc(int value) { |
wim | 15:b70ebfffb258 | 303 | int addr; |
wim | 15:b70ebfffb258 | 304 | |
wim | 15:b70ebfffb258 | 305 | if (value == '\n') { |
wim | 15:b70ebfffb258 | 306 | //No character to write |
wim | 15:b70ebfffb258 | 307 | |
wim | 15:b70ebfffb258 | 308 | //Update Cursor |
wim | 15:b70ebfffb258 | 309 | _column = 0; |
wim | 15:b70ebfffb258 | 310 | _row++; |
wim | 15:b70ebfffb258 | 311 | if (_row >= rows()) { |
wim | 15:b70ebfffb258 | 312 | _row = 0; |
wim | 15:b70ebfffb258 | 313 | } |
wim | 15:b70ebfffb258 | 314 | } |
wim | 15:b70ebfffb258 | 315 | else { |
wim | 15:b70ebfffb258 | 316 | //Character to write |
wim | 15:b70ebfffb258 | 317 | _writeData(value); |
wim | 15:b70ebfffb258 | 318 | |
wim | 15:b70ebfffb258 | 319 | //Update Cursor |
wim | 15:b70ebfffb258 | 320 | _column++; |
wim | 15:b70ebfffb258 | 321 | if (_column >= columns()) { |
wim | 15:b70ebfffb258 | 322 | _column = 0; |
wim | 15:b70ebfffb258 | 323 | _row++; |
wim | 15:b70ebfffb258 | 324 | if (_row >= rows()) { |
wim | 15:b70ebfffb258 | 325 | _row = 0; |
wim | 15:b70ebfffb258 | 326 | } |
wim | 15:b70ebfffb258 | 327 | } |
wim | 15:b70ebfffb258 | 328 | } //else |
wim | 15:b70ebfffb258 | 329 | |
wim | 15:b70ebfffb258 | 330 | //Set next memoryaddress, make sure cursor blinks at next location |
wim | 15:b70ebfffb258 | 331 | addr = getAddress(_column, _row); |
wim | 15:b70ebfffb258 | 332 | _writeCommand(0x80 | addr); |
wim | 15:b70ebfffb258 | 333 | |
wim | 15:b70ebfffb258 | 334 | return value; |
wim | 15:b70ebfffb258 | 335 | } |
wim | 15:b70ebfffb258 | 336 | |
wim | 15:b70ebfffb258 | 337 | |
wim | 16:c276b75e6585 | 338 | // get a single character (Stream implementation) |
wim | 21:9eb628d9e164 | 339 | int TextLCD_Base::_getc() { |
simon | 1:ac48b187213c | 340 | return -1; |
simon | 1:ac48b187213c | 341 | } |
simon | 1:ac48b187213c | 342 | |
wim | 14:0c32b66b14b8 | 343 | |
wim | 17:652ab113bc2e | 344 | // Write a nibble using the 4-bit interface |
wim | 21:9eb628d9e164 | 345 | void TextLCD_Base::_writeNibble(int value) { |
wim | 17:652ab113bc2e | 346 | |
wim | 17:652ab113bc2e | 347 | // Enable is Low |
wim | 21:9eb628d9e164 | 348 | this->_setEnable(true); |
wim | 21:9eb628d9e164 | 349 | this->_setData(value & 0x0F); // Low nibble |
wim | 17:652ab113bc2e | 350 | wait_us(1); // Data setup time |
wim | 21:9eb628d9e164 | 351 | this->_setEnable(false); |
wim | 17:652ab113bc2e | 352 | wait_us(1); // Datahold time |
wim | 17:652ab113bc2e | 353 | |
wim | 17:652ab113bc2e | 354 | // Enable is Low |
wim | 17:652ab113bc2e | 355 | |
wim | 17:652ab113bc2e | 356 | } |
wim | 17:652ab113bc2e | 357 | |
wim | 17:652ab113bc2e | 358 | |
wim | 16:c276b75e6585 | 359 | // Write a byte using the 4-bit interface |
wim | 21:9eb628d9e164 | 360 | void TextLCD_Base::_writeByte(int value) { |
wim | 15:b70ebfffb258 | 361 | |
wim | 15:b70ebfffb258 | 362 | // Enable is Low |
wim | 21:9eb628d9e164 | 363 | this->_setEnable(true); |
wim | 21:9eb628d9e164 | 364 | this->_setData(value >> 4); // High nibble |
wim | 15:b70ebfffb258 | 365 | wait_us(1); // Data setup time |
wim | 21:9eb628d9e164 | 366 | this->_setEnable(false); |
wim | 15:b70ebfffb258 | 367 | wait_us(1); // Data hold time |
wim | 15:b70ebfffb258 | 368 | |
wim | 21:9eb628d9e164 | 369 | this->_setEnable(true); |
wim | 21:9eb628d9e164 | 370 | this->_setData(value >> 0); // Low nibble |
wim | 15:b70ebfffb258 | 371 | wait_us(1); // Data setup time |
wim | 21:9eb628d9e164 | 372 | this->_setEnable(false); |
wim | 15:b70ebfffb258 | 373 | wait_us(1); // Datahold time |
wim | 15:b70ebfffb258 | 374 | |
wim | 15:b70ebfffb258 | 375 | // Enable is Low |
wim | 15:b70ebfffb258 | 376 | |
simon | 1:ac48b187213c | 377 | } |
simon | 1:ac48b187213c | 378 | |
wim | 21:9eb628d9e164 | 379 | // Write a command byte to the LCD controller |
wim | 21:9eb628d9e164 | 380 | void TextLCD_Base::_writeCommand(int command) { |
wim | 15:b70ebfffb258 | 381 | |
wim | 21:9eb628d9e164 | 382 | this->_setRS(false); |
wim | 16:c276b75e6585 | 383 | wait_us(1); // Data setup time for RS |
wim | 15:b70ebfffb258 | 384 | |
wim | 21:9eb628d9e164 | 385 | this->_writeByte(command); |
wim | 15:b70ebfffb258 | 386 | wait_us(40); // most instructions take 40us |
simon | 1:ac48b187213c | 387 | } |
simon | 1:ac48b187213c | 388 | |
wim | 21:9eb628d9e164 | 389 | // Write a data byte to the LCD controller |
wim | 21:9eb628d9e164 | 390 | void TextLCD_Base::_writeData(int data) { |
wim | 15:b70ebfffb258 | 391 | |
wim | 21:9eb628d9e164 | 392 | this->_setRS(true); |
wim | 16:c276b75e6585 | 393 | wait_us(1); // Data setup time for RS |
wim | 15:b70ebfffb258 | 394 | |
wim | 21:9eb628d9e164 | 395 | this->_writeByte(data); |
wim | 15:b70ebfffb258 | 396 | wait_us(40); // data writes take 40us |
simon | 1:ac48b187213c | 397 | } |
simon | 1:ac48b187213c | 398 | |
wim | 8:03116f75b66e | 399 | |
wim | 8:03116f75b66e | 400 | #if (0) |
wim | 16:c276b75e6585 | 401 | // This is the original _address() method. |
wim | 8:03116f75b66e | 402 | // It is confusing since it returns the memoryaddress or-ed with the set memorycommand 0x80. |
wim | 8:03116f75b66e | 403 | // Left it in here for compatibility with older code. New applications should use getAddress() instead. |
wim | 8:03116f75b66e | 404 | // |
wim | 21:9eb628d9e164 | 405 | int TextLCD_Base::_address(int column, int row) { |
simon | 1:ac48b187213c | 406 | switch (_type) { |
simon | 1:ac48b187213c | 407 | case LCD20x4: |
simon | 1:ac48b187213c | 408 | switch (row) { |
simon | 1:ac48b187213c | 409 | case 0: |
simon | 1:ac48b187213c | 410 | return 0x80 + column; |
simon | 1:ac48b187213c | 411 | case 1: |
simon | 1:ac48b187213c | 412 | return 0xc0 + column; |
simon | 1:ac48b187213c | 413 | case 2: |
simon | 1:ac48b187213c | 414 | return 0x94 + column; |
simon | 1:ac48b187213c | 415 | case 3: |
simon | 1:ac48b187213c | 416 | return 0xd4 + column; |
simon | 1:ac48b187213c | 417 | } |
simon | 1:ac48b187213c | 418 | case LCD16x2B: |
simon | 4:bf5b706f8d32 | 419 | return 0x80 + (row * 40) + column; |
simon | 1:ac48b187213c | 420 | case LCD16x2: |
simon | 1:ac48b187213c | 421 | case LCD20x2: |
simon | 1:ac48b187213c | 422 | default: |
simon | 4:bf5b706f8d32 | 423 | return 0x80 + (row * 0x40) + column; |
simon | 1:ac48b187213c | 424 | } |
simon | 1:ac48b187213c | 425 | } |
wim | 8:03116f75b66e | 426 | #endif |
wim | 8:03116f75b66e | 427 | |
wim | 8:03116f75b66e | 428 | |
wim | 16:c276b75e6585 | 429 | // This replaces the original _address() method. |
wim | 8:03116f75b66e | 430 | // Left it in here for compatibility with older code. New applications should use getAddress() instead. |
wim | 21:9eb628d9e164 | 431 | int TextLCD_Base::_address(int column, int row) { |
wim | 8:03116f75b66e | 432 | return 0x80 | getAddress(column, row); |
wim | 8:03116f75b66e | 433 | } |
wim | 8:03116f75b66e | 434 | |
wim | 8:03116f75b66e | 435 | // This is new method to return the memory address based on row, column and displaytype. |
wim | 8:03116f75b66e | 436 | // |
wim | 21:9eb628d9e164 | 437 | int TextLCD_Base::getAddress(int column, int row) { |
wim | 8:03116f75b66e | 438 | |
wim | 8:03116f75b66e | 439 | switch (_type) { |
wim | 8:03116f75b66e | 440 | case LCD8x1: |
wim | 8:03116f75b66e | 441 | return 0x00 + column; |
wim | 18:bd65dc10f27f | 442 | |
wim | 18:bd65dc10f27f | 443 | case LCD8x2B: |
wim | 18:bd65dc10f27f | 444 | // LCD8x2B is a special layout of LCD16x1 |
wim | 18:bd65dc10f27f | 445 | if (row==0) |
wim | 18:bd65dc10f27f | 446 | return 0x00 + column; |
wim | 18:bd65dc10f27f | 447 | else |
wim | 18:bd65dc10f27f | 448 | return 0x08 + column; |
wim | 18:bd65dc10f27f | 449 | |
wim | 13:24506ba22480 | 450 | case LCD16x1: |
wim | 13:24506ba22480 | 451 | // LCD16x1 is a special layout of LCD8x2 |
wim | 13:24506ba22480 | 452 | if (column<8) |
wim | 13:24506ba22480 | 453 | return 0x00 + column; |
wim | 13:24506ba22480 | 454 | else |
wim | 13:24506ba22480 | 455 | return 0x40 + (column - 8); |
wim | 13:24506ba22480 | 456 | |
wim | 28:30fa94f7341c | 457 | #if(0) |
wim | 28:30fa94f7341c | 458 | // Special mode for ST7036 |
wim | 28:30fa94f7341c | 459 | // case LCD16x3: |
wim | 28:30fa94f7341c | 460 | |
wim | 28:30fa94f7341c | 461 | // Special mode for PCF2116 (and KS0078) |
wim | 28:30fa94f7341c | 462 | case LCD12x3: |
wim | 28:30fa94f7341c | 463 | switch (row) { |
wim | 28:30fa94f7341c | 464 | case 0: |
wim | 28:30fa94f7341c | 465 | return 0x00 + column; |
wim | 28:30fa94f7341c | 466 | case 1: |
wim | 28:30fa94f7341c | 467 | return 0x20 + column; |
wim | 28:30fa94f7341c | 468 | case 2: |
wim | 28:30fa94f7341c | 469 | return 0x40 + column; |
wim | 28:30fa94f7341c | 470 | } |
wim | 28:30fa94f7341c | 471 | |
wim | 28:30fa94f7341c | 472 | // Special mode for PCF2116 (and KS0078) |
wim | 28:30fa94f7341c | 473 | case LCD12x4B: |
wim | 28:30fa94f7341c | 474 | switch (row) { |
wim | 28:30fa94f7341c | 475 | case 0: |
wim | 28:30fa94f7341c | 476 | return 0x00 + column; |
wim | 28:30fa94f7341c | 477 | case 1: |
wim | 28:30fa94f7341c | 478 | return 0x20 + column; |
wim | 28:30fa94f7341c | 479 | case 2: |
wim | 28:30fa94f7341c | 480 | return 0x40 + column; |
wim | 28:30fa94f7341c | 481 | case 3: |
wim | 28:30fa94f7341c | 482 | return 0x60 + column; |
wim | 28:30fa94f7341c | 483 | } |
wim | 28:30fa94f7341c | 484 | |
wim | 28:30fa94f7341c | 485 | #endif |
wim | 28:30fa94f7341c | 486 | |
wim | 15:b70ebfffb258 | 487 | case LCD12x4: |
wim | 15:b70ebfffb258 | 488 | switch (row) { |
wim | 15:b70ebfffb258 | 489 | case 0: |
wim | 15:b70ebfffb258 | 490 | return 0x00 + column; |
wim | 15:b70ebfffb258 | 491 | case 1: |
wim | 15:b70ebfffb258 | 492 | return 0x40 + column; |
wim | 15:b70ebfffb258 | 493 | case 2: |
wim | 15:b70ebfffb258 | 494 | return 0x0C + column; |
wim | 15:b70ebfffb258 | 495 | case 3: |
wim | 15:b70ebfffb258 | 496 | return 0x4C + column; |
wim | 15:b70ebfffb258 | 497 | } |
wim | 15:b70ebfffb258 | 498 | |
wim | 8:03116f75b66e | 499 | case LCD16x4: |
wim | 8:03116f75b66e | 500 | switch (row) { |
wim | 8:03116f75b66e | 501 | case 0: |
wim | 8:03116f75b66e | 502 | return 0x00 + column; |
wim | 8:03116f75b66e | 503 | case 1: |
wim | 8:03116f75b66e | 504 | return 0x40 + column; |
wim | 8:03116f75b66e | 505 | case 2: |
wim | 8:03116f75b66e | 506 | return 0x10 + column; |
wim | 8:03116f75b66e | 507 | case 3: |
wim | 8:03116f75b66e | 508 | return 0x50 + column; |
wim | 8:03116f75b66e | 509 | } |
wim | 8:03116f75b66e | 510 | |
wim | 8:03116f75b66e | 511 | case LCD20x4: |
wim | 8:03116f75b66e | 512 | switch (row) { |
wim | 8:03116f75b66e | 513 | case 0: |
wim | 8:03116f75b66e | 514 | return 0x00 + column; |
wim | 8:03116f75b66e | 515 | case 1: |
wim | 8:03116f75b66e | 516 | return 0x40 + column; |
wim | 8:03116f75b66e | 517 | case 2: |
wim | 8:03116f75b66e | 518 | return 0x14 + column; |
wim | 8:03116f75b66e | 519 | case 3: |
wim | 8:03116f75b66e | 520 | return 0x54 + column; |
wim | 8:03116f75b66e | 521 | } |
wim | 8:03116f75b66e | 522 | |
wim | 10:dd9b3a696acd | 523 | // Special mode for KS0078 |
wim | 10:dd9b3a696acd | 524 | case LCD24x4: |
wim | 10:dd9b3a696acd | 525 | switch (row) { |
wim | 10:dd9b3a696acd | 526 | case 0: |
wim | 10:dd9b3a696acd | 527 | return 0x00 + column; |
wim | 10:dd9b3a696acd | 528 | case 1: |
wim | 10:dd9b3a696acd | 529 | return 0x20 + column; |
wim | 10:dd9b3a696acd | 530 | case 2: |
wim | 10:dd9b3a696acd | 531 | return 0x40 + column; |
wim | 10:dd9b3a696acd | 532 | case 3: |
wim | 10:dd9b3a696acd | 533 | return 0x60 + column; |
wim | 10:dd9b3a696acd | 534 | } |
wim | 10:dd9b3a696acd | 535 | |
wim | 8:03116f75b66e | 536 | // Not sure about this one, seems wrong. |
wim | 28:30fa94f7341c | 537 | // Left in for compatibility with original library |
wim | 8:03116f75b66e | 538 | case LCD16x2B: |
wim | 8:03116f75b66e | 539 | return 0x00 + (row * 40) + column; |
wim | 8:03116f75b66e | 540 | |
wim | 18:bd65dc10f27f | 541 | case LCD8x2: |
wim | 15:b70ebfffb258 | 542 | case LCD12x2: |
wim | 8:03116f75b66e | 543 | case LCD16x2: |
wim | 8:03116f75b66e | 544 | case LCD20x2: |
wim | 8:03116f75b66e | 545 | case LCD24x2: |
wim | 9:0893d986e717 | 546 | case LCD40x2: |
wim | 8:03116f75b66e | 547 | return 0x00 + (row * 0x40) + column; |
wim | 15:b70ebfffb258 | 548 | |
wim | 15:b70ebfffb258 | 549 | case LCD40x4: |
wim | 15:b70ebfffb258 | 550 | // LCD40x4 is a special case since it has 2 controllers |
wim | 15:b70ebfffb258 | 551 | // Each controller is configured as 40x2 |
wim | 15:b70ebfffb258 | 552 | if (row<2) { |
wim | 15:b70ebfffb258 | 553 | // Test to see if we need to switch between controllers |
wim | 19:c747b9e2e7b8 | 554 | if (_ctrl_idx != _LCDCtrl_0) { |
wim | 17:652ab113bc2e | 555 | |
wim | 15:b70ebfffb258 | 556 | // Second LCD controller Cursor Off |
wim | 21:9eb628d9e164 | 557 | _setCursorAndDisplayMode(_currentMode, CurOff_BlkOff); |
wim | 15:b70ebfffb258 | 558 | |
wim | 15:b70ebfffb258 | 559 | // Select primary controller |
wim | 19:c747b9e2e7b8 | 560 | _ctrl_idx = _LCDCtrl_0; |
wim | 15:b70ebfffb258 | 561 | |
wim | 15:b70ebfffb258 | 562 | // Restore cursormode on primary LCD controller |
wim | 17:652ab113bc2e | 563 | _setCursorAndDisplayMode(_currentMode, _currentCursor); |
wim | 15:b70ebfffb258 | 564 | } |
wim | 15:b70ebfffb258 | 565 | |
wim | 15:b70ebfffb258 | 566 | return 0x00 + (row * 0x40) + column; |
wim | 15:b70ebfffb258 | 567 | } |
wim | 15:b70ebfffb258 | 568 | else { |
wim | 15:b70ebfffb258 | 569 | |
wim | 15:b70ebfffb258 | 570 | // Test to see if we need to switch between controllers |
wim | 19:c747b9e2e7b8 | 571 | if (_ctrl_idx != _LCDCtrl_1) { |
wim | 15:b70ebfffb258 | 572 | // Primary LCD controller Cursor Off |
wim | 21:9eb628d9e164 | 573 | _setCursorAndDisplayMode(_currentMode, CurOff_BlkOff); |
wim | 15:b70ebfffb258 | 574 | |
wim | 15:b70ebfffb258 | 575 | // Select secondary controller |
wim | 19:c747b9e2e7b8 | 576 | _ctrl_idx = _LCDCtrl_1; |
wim | 15:b70ebfffb258 | 577 | |
wim | 15:b70ebfffb258 | 578 | // Restore cursormode on secondary LCD controller |
wim | 17:652ab113bc2e | 579 | _setCursorAndDisplayMode(_currentMode, _currentCursor); |
wim | 15:b70ebfffb258 | 580 | } |
wim | 15:b70ebfffb258 | 581 | |
wim | 15:b70ebfffb258 | 582 | return 0x00 + ((row-2) * 0x40) + column; |
wim | 15:b70ebfffb258 | 583 | } |
wim | 8:03116f75b66e | 584 | |
wim | 8:03116f75b66e | 585 | // Should never get here. |
wim | 8:03116f75b66e | 586 | default: |
wim | 8:03116f75b66e | 587 | return 0x00; |
wim | 8:03116f75b66e | 588 | } |
wim | 8:03116f75b66e | 589 | } |
wim | 8:03116f75b66e | 590 | |
wim | 8:03116f75b66e | 591 | |
wim | 15:b70ebfffb258 | 592 | // Set row, column and update memoryaddress. |
wim | 8:03116f75b66e | 593 | // |
wim | 21:9eb628d9e164 | 594 | void TextLCD_Base::setAddress(int column, int row) { |
wim | 15:b70ebfffb258 | 595 | |
wim | 15:b70ebfffb258 | 596 | // Sanity Check column |
wim | 15:b70ebfffb258 | 597 | if (column < 0) { |
wim | 15:b70ebfffb258 | 598 | _column = 0; |
wim | 15:b70ebfffb258 | 599 | } |
wim | 15:b70ebfffb258 | 600 | else if (column >= columns()) { |
wim | 15:b70ebfffb258 | 601 | _column = columns() - 1; |
wim | 15:b70ebfffb258 | 602 | } else _column = column; |
wim | 8:03116f75b66e | 603 | |
wim | 15:b70ebfffb258 | 604 | // Sanity Check row |
wim | 15:b70ebfffb258 | 605 | if (row < 0) { |
wim | 15:b70ebfffb258 | 606 | _row = 0; |
wim | 15:b70ebfffb258 | 607 | } |
wim | 15:b70ebfffb258 | 608 | else if (row >= rows()) { |
wim | 15:b70ebfffb258 | 609 | _row = rows() - 1; |
wim | 15:b70ebfffb258 | 610 | } else _row = row; |
wim | 15:b70ebfffb258 | 611 | |
wim | 15:b70ebfffb258 | 612 | |
wim | 15:b70ebfffb258 | 613 | // Compute the memory address |
wim | 15:b70ebfffb258 | 614 | // For LCD40x4: switch controllers if needed |
wim | 15:b70ebfffb258 | 615 | // switch cursor if needed |
wim | 15:b70ebfffb258 | 616 | int addr = getAddress(_column, _row); |
wim | 8:03116f75b66e | 617 | |
wim | 13:24506ba22480 | 618 | _writeCommand(0x80 | addr); |
wim | 8:03116f75b66e | 619 | } |
simon | 1:ac48b187213c | 620 | |
wim | 21:9eb628d9e164 | 621 | int TextLCD_Base::columns() { |
simon | 1:ac48b187213c | 622 | switch (_type) { |
wim | 8:03116f75b66e | 623 | case LCD8x1: |
wim | 8:03116f75b66e | 624 | case LCD8x2: |
wim | 18:bd65dc10f27f | 625 | case LCD8x2B: |
wim | 8:03116f75b66e | 626 | return 8; |
wim | 15:b70ebfffb258 | 627 | |
wim | 15:b70ebfffb258 | 628 | case LCD12x2: |
wim | 28:30fa94f7341c | 629 | // case LCD12x3: |
wim | 15:b70ebfffb258 | 630 | case LCD12x4: |
wim | 28:30fa94f7341c | 631 | // case LCD12x4B: |
wim | 15:b70ebfffb258 | 632 | return 12; |
wim | 8:03116f75b66e | 633 | |
wim | 13:24506ba22480 | 634 | case LCD16x1: |
simon | 1:ac48b187213c | 635 | case LCD16x2: |
simon | 1:ac48b187213c | 636 | case LCD16x2B: |
wim | 28:30fa94f7341c | 637 | // case LCD16x3: |
wim | 8:03116f75b66e | 638 | case LCD16x4: |
wim | 8:03116f75b66e | 639 | return 16; |
wim | 8:03116f75b66e | 640 | |
wim | 8:03116f75b66e | 641 | case LCD20x2: |
wim | 8:03116f75b66e | 642 | case LCD20x4: |
wim | 8:03116f75b66e | 643 | return 20; |
wim | 8:03116f75b66e | 644 | |
wim | 8:03116f75b66e | 645 | case LCD24x2: |
wim | 10:dd9b3a696acd | 646 | case LCD24x4: |
wim | 8:03116f75b66e | 647 | return 24; |
wim | 9:0893d986e717 | 648 | |
wim | 9:0893d986e717 | 649 | case LCD40x2: |
wim | 15:b70ebfffb258 | 650 | case LCD40x4: |
wim | 9:0893d986e717 | 651 | return 40; |
wim | 8:03116f75b66e | 652 | |
wim | 8:03116f75b66e | 653 | // Should never get here. |
simon | 1:ac48b187213c | 654 | default: |
wim | 8:03116f75b66e | 655 | return 0; |
simon | 1:ac48b187213c | 656 | } |
simon | 1:ac48b187213c | 657 | } |
simon | 1:ac48b187213c | 658 | |
wim | 21:9eb628d9e164 | 659 | int TextLCD_Base::rows() { |
simon | 1:ac48b187213c | 660 | switch (_type) { |
wim | 8:03116f75b66e | 661 | case LCD8x1: |
wim | 13:24506ba22480 | 662 | case LCD16x1: |
wim | 8:03116f75b66e | 663 | return 1; |
wim | 8:03116f75b66e | 664 | |
wim | 15:b70ebfffb258 | 665 | case LCD8x2: |
wim | 18:bd65dc10f27f | 666 | case LCD8x2B: |
wim | 15:b70ebfffb258 | 667 | case LCD12x2: |
simon | 1:ac48b187213c | 668 | case LCD16x2: |
simon | 1:ac48b187213c | 669 | case LCD16x2B: |
simon | 1:ac48b187213c | 670 | case LCD20x2: |
wim | 8:03116f75b66e | 671 | case LCD24x2: |
wim | 9:0893d986e717 | 672 | case LCD40x2: |
wim | 8:03116f75b66e | 673 | return 2; |
wim | 28:30fa94f7341c | 674 | |
wim | 28:30fa94f7341c | 675 | // case LCD12x3: |
wim | 28:30fa94f7341c | 676 | // case LCD16x3: |
wim | 28:30fa94f7341c | 677 | // return 3; |
wim | 8:03116f75b66e | 678 | |
wim | 15:b70ebfffb258 | 679 | case LCD12x4: |
wim | 28:30fa94f7341c | 680 | // case LCD12x4B: |
wim | 8:03116f75b66e | 681 | case LCD16x4: |
wim | 8:03116f75b66e | 682 | case LCD20x4: |
wim | 10:dd9b3a696acd | 683 | case LCD24x4: |
wim | 15:b70ebfffb258 | 684 | case LCD40x4: |
wim | 8:03116f75b66e | 685 | return 4; |
wim | 12:6bf9d9957d31 | 686 | |
wim | 12:6bf9d9957d31 | 687 | // Should never get here. |
simon | 1:ac48b187213c | 688 | default: |
wim | 8:03116f75b66e | 689 | return 0; |
simon | 1:ac48b187213c | 690 | } |
simon | 1:ac48b187213c | 691 | } |
wim | 10:dd9b3a696acd | 692 | |
wim | 10:dd9b3a696acd | 693 | |
wim | 17:652ab113bc2e | 694 | // Set the Cursor Mode (Cursor Off & Blink Off, Cursor On & Blink Off, Cursor Off & Blink On, Cursor On & Blink On |
wim | 21:9eb628d9e164 | 695 | void TextLCD_Base::setCursor(LCDCursor cursorMode) { |
wim | 15:b70ebfffb258 | 696 | |
wim | 17:652ab113bc2e | 697 | // Save new cursor mode, needed when 2 controllers are in use or when display is switched off/on |
wim | 17:652ab113bc2e | 698 | _currentCursor = cursorMode; |
wim | 10:dd9b3a696acd | 699 | |
wim | 17:652ab113bc2e | 700 | // Configure only current LCD controller |
wim | 17:652ab113bc2e | 701 | _setCursorAndDisplayMode(_currentMode, _currentCursor); |
wim | 15:b70ebfffb258 | 702 | |
wim | 15:b70ebfffb258 | 703 | } |
wim | 15:b70ebfffb258 | 704 | |
wim | 17:652ab113bc2e | 705 | // Set the Displaymode (On/Off) |
wim | 21:9eb628d9e164 | 706 | void TextLCD_Base::setMode(LCDMode displayMode) { |
wim | 17:652ab113bc2e | 707 | |
wim | 17:652ab113bc2e | 708 | // Save new displayMode, needed when 2 controllers are in use or when cursor is changed |
wim | 17:652ab113bc2e | 709 | _currentMode = displayMode; |
wim | 15:b70ebfffb258 | 710 | |
wim | 17:652ab113bc2e | 711 | // Select and configure second LCD controller when needed |
wim | 17:652ab113bc2e | 712 | if(_type==LCD40x4) { |
wim | 21:9eb628d9e164 | 713 | if (_ctrl_idx==_LCDCtrl_0) { |
wim | 17:652ab113bc2e | 714 | // Configure primary LCD controller |
wim | 17:652ab113bc2e | 715 | _setCursorAndDisplayMode(_currentMode, _currentCursor); |
wim | 11:9ec02df863a1 | 716 | |
wim | 17:652ab113bc2e | 717 | // Select 2nd controller |
wim | 21:9eb628d9e164 | 718 | _ctrl_idx=_LCDCtrl_1; |
wim | 17:652ab113bc2e | 719 | |
wim | 17:652ab113bc2e | 720 | // Configure secondary LCD controller |
wim | 21:9eb628d9e164 | 721 | _setCursorAndDisplayMode(_currentMode, CurOff_BlkOff); |
wim | 11:9ec02df863a1 | 722 | |
wim | 17:652ab113bc2e | 723 | // Restore current controller |
wim | 21:9eb628d9e164 | 724 | _ctrl_idx=_LCDCtrl_0; |
wim | 17:652ab113bc2e | 725 | } |
wim | 17:652ab113bc2e | 726 | else { |
wim | 17:652ab113bc2e | 727 | // Select primary controller |
wim | 21:9eb628d9e164 | 728 | _ctrl_idx=_LCDCtrl_0; |
wim | 17:652ab113bc2e | 729 | |
wim | 17:652ab113bc2e | 730 | // Configure primary LCD controller |
wim | 21:9eb628d9e164 | 731 | _setCursorAndDisplayMode(_currentMode, CurOff_BlkOff); |
wim | 17:652ab113bc2e | 732 | |
wim | 17:652ab113bc2e | 733 | // Restore current controller |
wim | 21:9eb628d9e164 | 734 | _ctrl_idx=_LCDCtrl_1; |
wim | 11:9ec02df863a1 | 735 | |
wim | 17:652ab113bc2e | 736 | // Configure secondary LCD controller |
wim | 17:652ab113bc2e | 737 | _setCursorAndDisplayMode(_currentMode, _currentCursor); |
wim | 11:9ec02df863a1 | 738 | |
wim | 10:dd9b3a696acd | 739 | } |
wim | 17:652ab113bc2e | 740 | } |
wim | 17:652ab113bc2e | 741 | else { |
wim | 17:652ab113bc2e | 742 | // Configure primary LCD controller |
wim | 17:652ab113bc2e | 743 | _setCursorAndDisplayMode(_currentMode, _currentCursor); |
wim | 17:652ab113bc2e | 744 | } |
wim | 17:652ab113bc2e | 745 | |
wim | 17:652ab113bc2e | 746 | } |
wim | 17:652ab113bc2e | 747 | |
wim | 17:652ab113bc2e | 748 | |
wim | 17:652ab113bc2e | 749 | // Set the Displaymode (On/Off) and Cursortype for current controller |
wim | 21:9eb628d9e164 | 750 | void TextLCD_Base::_setCursorAndDisplayMode(LCDMode displayMode, LCDCursor cursorType) { |
wim | 17:652ab113bc2e | 751 | |
wim | 17:652ab113bc2e | 752 | // Configure current LCD controller |
wim | 17:652ab113bc2e | 753 | _writeCommand(0x08 | displayMode | cursorType); |
wim | 10:dd9b3a696acd | 754 | } |
wim | 10:dd9b3a696acd | 755 | |
wim | 20:e0da005a777f | 756 | // Set the Backlight mode (Off/On) |
wim | 21:9eb628d9e164 | 757 | void TextLCD_Base::setBacklight(LCDBacklight backlightMode) { |
wim | 20:e0da005a777f | 758 | |
wim | 20:e0da005a777f | 759 | if (backlightMode == LightOn) { |
wim | 21:9eb628d9e164 | 760 | this->_setBL(true); |
wim | 20:e0da005a777f | 761 | } |
wim | 20:e0da005a777f | 762 | else { |
wim | 21:9eb628d9e164 | 763 | this->_setBL(false); |
wim | 20:e0da005a777f | 764 | } |
wim | 20:e0da005a777f | 765 | } |
wim | 20:e0da005a777f | 766 | |
wim | 10:dd9b3a696acd | 767 | |
wim | 21:9eb628d9e164 | 768 | void TextLCD_Base::setUDC(unsigned char c, char *udc_data) { |
wim | 15:b70ebfffb258 | 769 | |
wim | 15:b70ebfffb258 | 770 | // Select and configure second LCD controller when needed |
wim | 15:b70ebfffb258 | 771 | if(_type==LCD40x4) { |
wim | 19:c747b9e2e7b8 | 772 | _LCDCtrl_Idx current_ctrl_idx = _ctrl_idx; // Temp save current controller |
wim | 15:b70ebfffb258 | 773 | |
wim | 15:b70ebfffb258 | 774 | // Select primary controller |
wim | 21:9eb628d9e164 | 775 | _ctrl_idx=_LCDCtrl_0; |
wim | 15:b70ebfffb258 | 776 | |
wim | 15:b70ebfffb258 | 777 | // Configure primary LCD controller |
wim | 15:b70ebfffb258 | 778 | _setUDC(c, udc_data); |
wim | 15:b70ebfffb258 | 779 | |
wim | 15:b70ebfffb258 | 780 | // Select 2nd controller |
wim | 21:9eb628d9e164 | 781 | _ctrl_idx=_LCDCtrl_1; |
wim | 15:b70ebfffb258 | 782 | |
wim | 15:b70ebfffb258 | 783 | // Configure secondary LCD controller |
wim | 15:b70ebfffb258 | 784 | _setUDC(c, udc_data); |
wim | 11:9ec02df863a1 | 785 | |
wim | 15:b70ebfffb258 | 786 | // Restore current controller |
wim | 19:c747b9e2e7b8 | 787 | _ctrl_idx=current_ctrl_idx; |
wim | 15:b70ebfffb258 | 788 | } |
wim | 15:b70ebfffb258 | 789 | else { |
wim | 15:b70ebfffb258 | 790 | // Configure primary LCD controller |
wim | 15:b70ebfffb258 | 791 | _setUDC(c, udc_data); |
wim | 15:b70ebfffb258 | 792 | } |
wim | 15:b70ebfffb258 | 793 | |
wim | 15:b70ebfffb258 | 794 | } |
wim | 15:b70ebfffb258 | 795 | |
wim | 21:9eb628d9e164 | 796 | void TextLCD_Base::_setUDC(unsigned char c, char *udc_data) { |
wim | 15:b70ebfffb258 | 797 | |
wim | 15:b70ebfffb258 | 798 | // Select CG RAM for current LCD controller |
wim | 15:b70ebfffb258 | 799 | _writeCommand(0x40 + ((c & 0x07) << 3)); //Set CG-RAM address, |
wim | 15:b70ebfffb258 | 800 | //8 sequential locations needed per UDC |
wim | 15:b70ebfffb258 | 801 | // Store UDC pattern |
wim | 11:9ec02df863a1 | 802 | for (int i=0; i<8; i++) { |
wim | 13:24506ba22480 | 803 | _writeData(*udc_data++); |
wim | 11:9ec02df863a1 | 804 | } |
wim | 15:b70ebfffb258 | 805 | |
wim | 15:b70ebfffb258 | 806 | //Select DD RAM again for current LCD controller |
wim | 15:b70ebfffb258 | 807 | int addr = getAddress(_column, _row); |
wim | 15:b70ebfffb258 | 808 | _writeCommand(0x80 | addr); |
wim | 15:b70ebfffb258 | 809 | |
wim | 11:9ec02df863a1 | 810 | } |
wim | 21:9eb628d9e164 | 811 | |
kenjiArai | 29:986538f94abe | 812 | // JH1PJL from here -> |
kenjiArai | 29:986538f94abe | 813 | void TextLCD_Base::setContrast(unsigned char c) { |
kenjiArai | 29:986538f94abe | 814 | |
kenjiArai | 29:986538f94abe | 815 | if (_ctrl == ST7032_3V3){ |
kenjiArai | 29:986538f94abe | 816 | _writeCommand(0x39); |
kenjiArai | 29:986538f94abe | 817 | _writeCommand(0x70 | (c & 0x0f)); // contrast Low |
kenjiArai | 29:986538f94abe | 818 | _writeCommand(0x5C | ((c >> 4) & 0x03)); // contast High/icon/power |
kenjiArai | 29:986538f94abe | 819 | _writeCommand(0x38); |
kenjiArai | 29:986538f94abe | 820 | } |
kenjiArai | 29:986538f94abe | 821 | |
kenjiArai | 29:986538f94abe | 822 | } |
kenjiArai | 29:986538f94abe | 823 | // JH1PJL <- to here |
kenjiArai | 29:986538f94abe | 824 | |
wim | 23:d47f226efb24 | 825 | //--------- End TextLCD_Base ----------- |
wim | 21:9eb628d9e164 | 826 | |
wim | 22:35742ec80c24 | 827 | |
wim | 21:9eb628d9e164 | 828 | |
wim | 23:d47f226efb24 | 829 | //--------- Start TextLCD Bus ----------- |
wim | 21:9eb628d9e164 | 830 | |
wim | 21:9eb628d9e164 | 831 | /* Create a TextLCD interface for using regular mbed pins |
wim | 21:9eb628d9e164 | 832 | * |
wim | 21:9eb628d9e164 | 833 | * @param rs Instruction/data control line |
wim | 21:9eb628d9e164 | 834 | * @param e Enable line (clock) |
wim | 21:9eb628d9e164 | 835 | * @param d4-d7 Data lines for using as a 4-bit interface |
wim | 21:9eb628d9e164 | 836 | * @param type Sets the panel size/addressing mode (default = LCD16x2) |
wim | 21:9eb628d9e164 | 837 | * @param bl Backlight control line (optional, default = NC) |
wim | 21:9eb628d9e164 | 838 | * @param e2 Enable2 line (clock for second controller, LCD40x4 only) |
wim | 21:9eb628d9e164 | 839 | * @param ctrl LCD controller (default = HD44780) |
wim | 21:9eb628d9e164 | 840 | */ |
wim | 21:9eb628d9e164 | 841 | TextLCD::TextLCD(PinName rs, PinName e, |
wim | 21:9eb628d9e164 | 842 | PinName d4, PinName d5, PinName d6, PinName d7, |
wim | 21:9eb628d9e164 | 843 | LCDType type, PinName bl, PinName e2, LCDCtrl ctrl) : |
wim | 21:9eb628d9e164 | 844 | TextLCD_Base(type, ctrl), |
wim | 22:35742ec80c24 | 845 | _rs(rs), _e(e), _d(d4, d5, d6, d7) { |
wim | 22:35742ec80c24 | 846 | |
wim | 22:35742ec80c24 | 847 | // The hardware Backlight pin is optional. Test and make sure whether it exists or not to prevent illegal access. |
wim | 22:35742ec80c24 | 848 | if (bl != NC) { |
wim | 22:35742ec80c24 | 849 | _bl = new DigitalOut(bl); //Construct new pin |
wim | 22:35742ec80c24 | 850 | _bl->write(0); //Deactivate |
wim | 22:35742ec80c24 | 851 | } |
wim | 22:35742ec80c24 | 852 | else { |
wim | 22:35742ec80c24 | 853 | // No Hardware Backlight pin |
wim | 22:35742ec80c24 | 854 | _bl = NULL; //Construct dummy pin |
wim | 22:35742ec80c24 | 855 | } |
wim | 22:35742ec80c24 | 856 | |
wim | 22:35742ec80c24 | 857 | // 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 | 858 | if (e2 != NC) { |
wim | 22:35742ec80c24 | 859 | _e2 = new DigitalOut(e2); //Construct new pin |
wim | 22:35742ec80c24 | 860 | _e2->write(0); //Deactivate |
wim | 22:35742ec80c24 | 861 | } |
wim | 22:35742ec80c24 | 862 | else { |
wim | 22:35742ec80c24 | 863 | // No Hardware Enable pin |
wim | 22:35742ec80c24 | 864 | _e2 = NULL; //Construct dummy pin |
wim | 22:35742ec80c24 | 865 | } |
wim | 21:9eb628d9e164 | 866 | |
wim | 21:9eb628d9e164 | 867 | _init(); |
wim | 21:9eb628d9e164 | 868 | |
wim | 21:9eb628d9e164 | 869 | } |
wim | 21:9eb628d9e164 | 870 | |
wim | 22:35742ec80c24 | 871 | /** Set E pin (or E2 pin) |
wim | 22:35742ec80c24 | 872 | * Used for mbed pins, I2C bus expander or SPI shiftregister |
wim | 22:35742ec80c24 | 873 | * Default PinName value for E2 is NC, must be used as pointer to avoid issues with mbed lib and DigitalOut pins |
wim | 22:35742ec80c24 | 874 | * @param value true or false |
wim | 22:35742ec80c24 | 875 | * @return none |
wim | 22:35742ec80c24 | 876 | */ |
wim | 21:9eb628d9e164 | 877 | void TextLCD::_setEnable(bool value) { |
wim | 21:9eb628d9e164 | 878 | |
wim | 22:35742ec80c24 | 879 | if(_ctrl_idx==_LCDCtrl_0) { |
wim | 22:35742ec80c24 | 880 | if (value) { |
wim | 22:35742ec80c24 | 881 | _e = 1; // Set E bit |
wim | 22:35742ec80c24 | 882 | } |
wim | 22:35742ec80c24 | 883 | else { |
wim | 22:35742ec80c24 | 884 | _e = 0; // Reset E bit |
wim | 22:35742ec80c24 | 885 | } |
wim | 22:35742ec80c24 | 886 | } |
wim | 22:35742ec80c24 | 887 | else { |
wim | 22:35742ec80c24 | 888 | if (value) { |
wim | 22:35742ec80c24 | 889 | if (_e2 != NULL) {_e2->write(1);} //Set E2 bit |
wim | 22:35742ec80c24 | 890 | } |
wim | 22:35742ec80c24 | 891 | else { |
wim | 22:35742ec80c24 | 892 | if (_e2 != NULL) {_e2->write(0);} //Reset E2 bit |
wim | 22:35742ec80c24 | 893 | } |
wim | 22:35742ec80c24 | 894 | } |
wim | 21:9eb628d9e164 | 895 | |
wim | 21:9eb628d9e164 | 896 | } |
wim | 21:9eb628d9e164 | 897 | |
wim | 21:9eb628d9e164 | 898 | // Set RS pin |
wim | 21:9eb628d9e164 | 899 | // Used for mbed pins, I2C bus expander or SPI shiftregister |
wim | 21:9eb628d9e164 | 900 | void TextLCD::_setRS(bool value) { |
wim | 21:9eb628d9e164 | 901 | |
wim | 22:35742ec80c24 | 902 | if (value) { |
wim | 21:9eb628d9e164 | 903 | _rs = 1; // Set RS bit |
wim | 22:35742ec80c24 | 904 | } |
wim | 22:35742ec80c24 | 905 | else { |
wim | 21:9eb628d9e164 | 906 | _rs = 0; // Reset RS bit |
wim | 22:35742ec80c24 | 907 | } |
wim | 21:9eb628d9e164 | 908 | |
wim | 21:9eb628d9e164 | 909 | } |
wim | 21:9eb628d9e164 | 910 | |
wim | 22:35742ec80c24 | 911 | /** Set BL pin |
wim | 22:35742ec80c24 | 912 | * Used for mbed pins, I2C bus expander or SPI shiftregister |
wim | 22:35742ec80c24 | 913 | * Default PinName value is NC, must be used as pointer to avoid issues with mbed lib and DigitalOut pins |
wim | 22:35742ec80c24 | 914 | * @param value true or false |
wim | 22:35742ec80c24 | 915 | * @return none |
wim | 22:35742ec80c24 | 916 | */ |
wim | 21:9eb628d9e164 | 917 | void TextLCD::_setBL(bool value) { |
wim | 21:9eb628d9e164 | 918 | |
wim | 22:35742ec80c24 | 919 | if (value) { |
wim | 22:35742ec80c24 | 920 | if (_bl != NULL) {_bl->write(1);} //Set BL bit |
wim | 22:35742ec80c24 | 921 | } |
wim | 22:35742ec80c24 | 922 | else { |
wim | 22:35742ec80c24 | 923 | if (_bl != NULL) {_bl->write(0);} //Reset BL bit |
wim | 22:35742ec80c24 | 924 | } |
wim | 21:9eb628d9e164 | 925 | |
wim | 21:9eb628d9e164 | 926 | } |
wim | 21:9eb628d9e164 | 927 | |
wim | 21:9eb628d9e164 | 928 | // Place the 4bit data on the databus |
wim | 21:9eb628d9e164 | 929 | // Used for mbed pins, I2C bus expander or SPI shifregister |
wim | 21:9eb628d9e164 | 930 | void TextLCD::_setData(int value) { |
wim | 21:9eb628d9e164 | 931 | _d = value & 0x0F; // Write Databits |
wim | 21:9eb628d9e164 | 932 | } |
wim | 21:9eb628d9e164 | 933 | |
wim | 22:35742ec80c24 | 934 | /** Destruct a TextLCD interface for using regular mbed pins |
wim | 22:35742ec80c24 | 935 | * |
wim | 22:35742ec80c24 | 936 | * @param none |
wim | 22:35742ec80c24 | 937 | * @return none |
wim | 22:35742ec80c24 | 938 | */ |
wim | 22:35742ec80c24 | 939 | TextLCD::~TextLCD() { |
wim | 22:35742ec80c24 | 940 | if (_bl != NULL) {delete _bl;} // BL pin |
wim | 22:35742ec80c24 | 941 | if (_e2 != NULL) {delete _e2;} // E2 pin |
wim | 22:35742ec80c24 | 942 | } |
wim | 21:9eb628d9e164 | 943 | |
wim | 22:35742ec80c24 | 944 | |
wim | 23:d47f226efb24 | 945 | //----------- End TextLCD --------------- |
wim | 21:9eb628d9e164 | 946 | |
wim | 21:9eb628d9e164 | 947 | |
wim | 23:d47f226efb24 | 948 | //--------- Start TextLCD_I2C ----------- |
wim | 22:35742ec80c24 | 949 | |
wim | 26:bd897a001012 | 950 | /** Create a TextLCD interface using an I2C PC8574 (or PCF8574A) or MCP23008 portexpander |
wim | 22:35742ec80c24 | 951 | * |
wim | 22:35742ec80c24 | 952 | * @param i2c I2C Bus |
wim | 26:bd897a001012 | 953 | * @param deviceAddress I2C slave address (PCF8574, PCF8574A or MCP23008, default = 0x40) |
wim | 22:35742ec80c24 | 954 | * @param type Sets the panel size/addressing mode (default = LCD16x2) |
wim | 22:35742ec80c24 | 955 | * @param ctrl LCD controller (default = HD44780) |
wim | 22:35742ec80c24 | 956 | */ |
wim | 21:9eb628d9e164 | 957 | TextLCD_I2C::TextLCD_I2C(I2C *i2c, char deviceAddress, LCDType type, LCDCtrl ctrl) : |
wim | 21:9eb628d9e164 | 958 | TextLCD_Base(type, ctrl), |
wim | 21:9eb628d9e164 | 959 | _i2c(i2c){ |
wim | 21:9eb628d9e164 | 960 | |
wim | 22:35742ec80c24 | 961 | _slaveAddress = deviceAddress & 0xFE; |
wim | 28:30fa94f7341c | 962 | |
wim | 28:30fa94f7341c | 963 | |
wim | 28:30fa94f7341c | 964 | // Setup the I2C bus |
wim | 28:30fa94f7341c | 965 | // The max bitrate for PCF8574 is 100kbit, the max bitrate for MCP23008 is 400kbit, |
wim | 28:30fa94f7341c | 966 | // _i2c->frequency(100000); |
wim | 21:9eb628d9e164 | 967 | |
wim | 26:bd897a001012 | 968 | |
wim | 26:bd897a001012 | 969 | #if (MCP23008==1) |
wim | 26:bd897a001012 | 970 | // MCP23008 portexpander Init |
wim | 27:22d5086f6ba6 | 971 | _write_register(IODIR, 0x00); // All outputs |
wim | 27:22d5086f6ba6 | 972 | _write_register(IPOL, 0x00); // No reverse polarity |
wim | 27:22d5086f6ba6 | 973 | _write_register(GPINTEN, 0x00); // No interrupt |
wim | 27:22d5086f6ba6 | 974 | _write_register(DEFVAL, 0x00); // Default value to compare against for interrupts |
wim | 27:22d5086f6ba6 | 975 | _write_register(INTCON, 0x00); // No interrupt on changes |
wim | 27:22d5086f6ba6 | 976 | _write_register(IOCON, 0x00); // Interrupt polarity |
wim | 27:22d5086f6ba6 | 977 | _write_register(GPPU, 0x00); // No Pullup |
wim | 27:22d5086f6ba6 | 978 | _write_register(INTF, 0x00); // |
wim | 27:22d5086f6ba6 | 979 | _write_register(INTCAP, 0x00); // |
wim | 27:22d5086f6ba6 | 980 | _write_register(GPIO, 0x00); // Output/Input pins |
wim | 27:22d5086f6ba6 | 981 | _write_register(OLAT, 0x00); // Output Latch |
wim | 26:bd897a001012 | 982 | |
wim | 21:9eb628d9e164 | 983 | // Init the portexpander bus |
wim | 21:9eb628d9e164 | 984 | _lcd_bus = D_LCD_BUS_DEF; |
wim | 21:9eb628d9e164 | 985 | |
wim | 21:9eb628d9e164 | 986 | // write the new data to the portexpander |
wim | 26:bd897a001012 | 987 | _write_register(GPIO, _lcd_bus); |
wim | 26:bd897a001012 | 988 | #else |
wim | 26:bd897a001012 | 989 | // PCF8574 of PCF8574A portexpander |
wim | 26:bd897a001012 | 990 | |
wim | 26:bd897a001012 | 991 | // Init the portexpander bus |
wim | 26:bd897a001012 | 992 | _lcd_bus = D_LCD_BUS_DEF; |
wim | 26:bd897a001012 | 993 | |
wim | 26:bd897a001012 | 994 | // write the new data to the portexpander |
wim | 21:9eb628d9e164 | 995 | _i2c->write(_slaveAddress, &_lcd_bus, 1); |
wim | 26:bd897a001012 | 996 | #endif |
wim | 21:9eb628d9e164 | 997 | |
wim | 21:9eb628d9e164 | 998 | _init(); |
wim | 21:9eb628d9e164 | 999 | |
wim | 21:9eb628d9e164 | 1000 | } |
wim | 21:9eb628d9e164 | 1001 | |
wim | 21:9eb628d9e164 | 1002 | // Set E pin (or E2 pin) |
wim | 21:9eb628d9e164 | 1003 | // Used for mbed pins, I2C bus expander or SPI shiftregister |
wim | 21:9eb628d9e164 | 1004 | void TextLCD_I2C::_setEnable(bool value) { |
wim | 21:9eb628d9e164 | 1005 | |
wim | 22:35742ec80c24 | 1006 | if(_ctrl_idx==_LCDCtrl_0) { |
wim | 26:bd897a001012 | 1007 | if (value) { |
wim | 22:35742ec80c24 | 1008 | _lcd_bus |= D_LCD_E; // Set E bit |
wim | 26:bd897a001012 | 1009 | } |
wim | 26:bd897a001012 | 1010 | else { |
wim | 22:35742ec80c24 | 1011 | _lcd_bus &= ~D_LCD_E; // Reset E bit |
wim | 26:bd897a001012 | 1012 | } |
wim | 22:35742ec80c24 | 1013 | } |
wim | 22:35742ec80c24 | 1014 | else { |
wim | 26:bd897a001012 | 1015 | if (value) { |
wim | 22:35742ec80c24 | 1016 | _lcd_bus |= D_LCD_E2; // Set E2 bit |
wim | 26:bd897a001012 | 1017 | } |
wim | 26:bd897a001012 | 1018 | else { |
wim | 22:35742ec80c24 | 1019 | _lcd_bus &= ~D_LCD_E2; // Reset E2bit |
wim | 26:bd897a001012 | 1020 | } |
wim | 26:bd897a001012 | 1021 | } |
wim | 26:bd897a001012 | 1022 | |
wim | 26:bd897a001012 | 1023 | |
wim | 26:bd897a001012 | 1024 | #if (MCP23008==1) |
wim | 26:bd897a001012 | 1025 | // MCP23008 portexpander |
wim | 26:bd897a001012 | 1026 | |
wim | 26:bd897a001012 | 1027 | // write the new data to the portexpander |
wim | 26:bd897a001012 | 1028 | _write_register(GPIO, _lcd_bus); |
wim | 26:bd897a001012 | 1029 | #else |
wim | 26:bd897a001012 | 1030 | // PCF8574 of PCF8574A portexpander |
wim | 21:9eb628d9e164 | 1031 | |
wim | 22:35742ec80c24 | 1032 | // write the new data to the I2C portexpander |
wim | 22:35742ec80c24 | 1033 | _i2c->write(_slaveAddress, &_lcd_bus, 1); |
wim | 26:bd897a001012 | 1034 | #endif |
wim | 21:9eb628d9e164 | 1035 | } |
wim | 21:9eb628d9e164 | 1036 | |
wim | 21:9eb628d9e164 | 1037 | // Set RS pin |
wim | 21:9eb628d9e164 | 1038 | // Used for mbed pins, I2C bus expander or SPI shiftregister |
wim | 21:9eb628d9e164 | 1039 | void TextLCD_I2C::_setRS(bool value) { |
wim | 21:9eb628d9e164 | 1040 | |
wim | 26:bd897a001012 | 1041 | if (value) { |
wim | 22:35742ec80c24 | 1042 | _lcd_bus |= D_LCD_RS; // Set RS bit |
wim | 26:bd897a001012 | 1043 | } |
wim | 26:bd897a001012 | 1044 | else { |
wim | 22:35742ec80c24 | 1045 | _lcd_bus &= ~D_LCD_RS; // Reset RS bit |
wim | 26:bd897a001012 | 1046 | } |
wim | 26:bd897a001012 | 1047 | |
wim | 26:bd897a001012 | 1048 | |
wim | 26:bd897a001012 | 1049 | #if (MCP23008==1) |
wim | 26:bd897a001012 | 1050 | // MCP23008 portexpander |
wim | 26:bd897a001012 | 1051 | |
wim | 26:bd897a001012 | 1052 | // write the new data to the portexpander |
wim | 26:bd897a001012 | 1053 | _write_register(GPIO, _lcd_bus); |
wim | 26:bd897a001012 | 1054 | #else |
wim | 26:bd897a001012 | 1055 | // PCF8574 of PCF8574A portexpander |
wim | 21:9eb628d9e164 | 1056 | |
wim | 22:35742ec80c24 | 1057 | // write the new data to the I2C portexpander |
wim | 22:35742ec80c24 | 1058 | _i2c->write(_slaveAddress, &_lcd_bus, 1); |
wim | 26:bd897a001012 | 1059 | #endif |
wim | 21:9eb628d9e164 | 1060 | |
wim | 21:9eb628d9e164 | 1061 | } |
wim | 21:9eb628d9e164 | 1062 | |
wim | 21:9eb628d9e164 | 1063 | // Set BL pin |
wim | 21:9eb628d9e164 | 1064 | // Used for mbed pins, I2C bus expander or SPI shiftregister |
wim | 21:9eb628d9e164 | 1065 | void TextLCD_I2C::_setBL(bool value) { |
wim | 21:9eb628d9e164 | 1066 | |
wim | 26:bd897a001012 | 1067 | if (value) { |
wim | 21:9eb628d9e164 | 1068 | _lcd_bus |= D_LCD_BL; // Set BL bit |
wim | 26:bd897a001012 | 1069 | } |
wim | 26:bd897a001012 | 1070 | else { |
wim | 21:9eb628d9e164 | 1071 | _lcd_bus &= ~D_LCD_BL; // Reset BL bit |
wim | 26:bd897a001012 | 1072 | } |
wim | 26:bd897a001012 | 1073 | |
wim | 26:bd897a001012 | 1074 | #if (MCP23008==1) |
wim | 26:bd897a001012 | 1075 | // MCP23008 portexpander |
wim | 26:bd897a001012 | 1076 | |
wim | 26:bd897a001012 | 1077 | // write the new data to the portexpander |
wim | 26:bd897a001012 | 1078 | _write_register(GPIO, _lcd_bus); |
wim | 26:bd897a001012 | 1079 | #else |
wim | 26:bd897a001012 | 1080 | // PCF8574 of PCF8574A portexpander |
wim | 21:9eb628d9e164 | 1081 | |
wim | 21:9eb628d9e164 | 1082 | // write the new data to the I2C portexpander |
wim | 21:9eb628d9e164 | 1083 | _i2c->write(_slaveAddress, &_lcd_bus, 1); |
wim | 26:bd897a001012 | 1084 | #endif |
wim | 21:9eb628d9e164 | 1085 | |
wim | 21:9eb628d9e164 | 1086 | } |
wim | 21:9eb628d9e164 | 1087 | |
wim | 21:9eb628d9e164 | 1088 | |
wim | 21:9eb628d9e164 | 1089 | |
wim | 21:9eb628d9e164 | 1090 | // Place the 4bit data on the databus |
wim | 21:9eb628d9e164 | 1091 | // Used for mbed pins, I2C bus expander or SPI shifregister |
wim | 21:9eb628d9e164 | 1092 | void TextLCD_I2C::_setData(int value) { |
wim | 21:9eb628d9e164 | 1093 | int data; |
wim | 22:35742ec80c24 | 1094 | |
wim | 22:35742ec80c24 | 1095 | // Set bit by bit to support any mapping of expander portpins to LCD pins |
wim | 21:9eb628d9e164 | 1096 | |
wim | 22:35742ec80c24 | 1097 | data = value & 0x0F; |
wim | 26:bd897a001012 | 1098 | if (data & 0x01){ |
wim | 22:35742ec80c24 | 1099 | _lcd_bus |= D_LCD_D4; // Set Databit |
wim | 26:bd897a001012 | 1100 | } |
wim | 26:bd897a001012 | 1101 | else { |
wim | 26:bd897a001012 | 1102 | _lcd_bus &= ~D_LCD_D4; // Reset Databit |
wim | 26:bd897a001012 | 1103 | } |
wim | 21:9eb628d9e164 | 1104 | |
wim | 26:bd897a001012 | 1105 | if (data & 0x02){ |
wim | 22:35742ec80c24 | 1106 | _lcd_bus |= D_LCD_D5; // Set Databit |
wim | 26:bd897a001012 | 1107 | } |
wim | 26:bd897a001012 | 1108 | else { |
wim | 26:bd897a001012 | 1109 | _lcd_bus &= ~D_LCD_D5; // Reset Databit |
wim | 26:bd897a001012 | 1110 | } |
wim | 21:9eb628d9e164 | 1111 | |
wim | 26:bd897a001012 | 1112 | if (data & 0x04) { |
wim | 22:35742ec80c24 | 1113 | _lcd_bus |= D_LCD_D6; // Set Databit |
wim | 26:bd897a001012 | 1114 | } |
wim | 26:bd897a001012 | 1115 | else { |
wim | 26:bd897a001012 | 1116 | _lcd_bus &= ~D_LCD_D6; // Reset Databit |
wim | 26:bd897a001012 | 1117 | } |
wim | 21:9eb628d9e164 | 1118 | |
wim | 26:bd897a001012 | 1119 | if (data & 0x08) { |
wim | 22:35742ec80c24 | 1120 | _lcd_bus |= D_LCD_D7; // Set Databit |
wim | 26:bd897a001012 | 1121 | } |
wim | 26:bd897a001012 | 1122 | else { |
wim | 26:bd897a001012 | 1123 | _lcd_bus &= ~D_LCD_D7; // Reset Databit |
wim | 26:bd897a001012 | 1124 | } |
wim | 21:9eb628d9e164 | 1125 | |
wim | 26:bd897a001012 | 1126 | #if (MCP23008==1) |
wim | 26:bd897a001012 | 1127 | // MCP23008 portexpander |
wim | 26:bd897a001012 | 1128 | |
wim | 26:bd897a001012 | 1129 | // write the new data to the portexpander |
wim | 26:bd897a001012 | 1130 | _write_register(GPIO, _lcd_bus); |
wim | 26:bd897a001012 | 1131 | #else |
wim | 26:bd897a001012 | 1132 | // PCF8574 of PCF8574A portexpander |
wim | 26:bd897a001012 | 1133 | |
wim | 22:35742ec80c24 | 1134 | // write the new data to the I2C portexpander |
wim | 26:bd897a001012 | 1135 | _i2c->write(_slaveAddress, &_lcd_bus, 1); |
wim | 26:bd897a001012 | 1136 | #endif |
wim | 22:35742ec80c24 | 1137 | |
wim | 22:35742ec80c24 | 1138 | } |
wim | 21:9eb628d9e164 | 1139 | |
wim | 26:bd897a001012 | 1140 | // Write data to MCP23008 I2C portexpander |
wim | 26:bd897a001012 | 1141 | void TextLCD_I2C::_write_register (int reg, int value) { |
wim | 26:bd897a001012 | 1142 | char data[] = {reg, value}; |
wim | 26:bd897a001012 | 1143 | |
wim | 26:bd897a001012 | 1144 | _i2c->write(_slaveAddress, data, 2); |
wim | 26:bd897a001012 | 1145 | |
wim | 26:bd897a001012 | 1146 | } |
wim | 26:bd897a001012 | 1147 | |
wim | 23:d47f226efb24 | 1148 | //---------- End TextLCD_I2C ------------ |
wim | 21:9eb628d9e164 | 1149 | |
wim | 21:9eb628d9e164 | 1150 | |
wim | 28:30fa94f7341c | 1151 | //--------- Start TextLCD_I2C_N --------- |
wim | 28:30fa94f7341c | 1152 | |
wim | 28:30fa94f7341c | 1153 | /** Create a TextLCD interface using a controller with native I2C interface |
wim | 28:30fa94f7341c | 1154 | * |
wim | 28:30fa94f7341c | 1155 | * @param i2c I2C Bus |
wim | 28:30fa94f7341c | 1156 | * @param deviceAddress I2C slave address (default = 0x7C) |
wim | 28:30fa94f7341c | 1157 | * @param type Sets the panel size/addressing mode (default = LCD16x2) |
wim | 28:30fa94f7341c | 1158 | * @param bl Backlight control line (optional, default = NC) |
wim | 28:30fa94f7341c | 1159 | * @param ctrl LCD controller (default = ST7032_3V3) |
wim | 28:30fa94f7341c | 1160 | */ |
wim | 28:30fa94f7341c | 1161 | TextLCD_I2C_N::TextLCD_I2C_N(I2C *i2c, char deviceAddress, LCDType type, PinName bl, LCDCtrl ctrl) : |
wim | 28:30fa94f7341c | 1162 | TextLCD_Base(type, ctrl), |
wim | 28:30fa94f7341c | 1163 | _i2c(i2c){ |
wim | 28:30fa94f7341c | 1164 | |
wim | 28:30fa94f7341c | 1165 | _slaveAddress = deviceAddress & 0xFE; |
wim | 28:30fa94f7341c | 1166 | |
wim | 28:30fa94f7341c | 1167 | |
wim | 28:30fa94f7341c | 1168 | // Setup the I2C bus |
wim | 28:30fa94f7341c | 1169 | // The max bitrate for ST7032 is 400kbit, |
wim | 28:30fa94f7341c | 1170 | // _i2c->frequency(100000); |
wim | 28:30fa94f7341c | 1171 | |
wim | 28:30fa94f7341c | 1172 | |
wim | 28:30fa94f7341c | 1173 | // The hardware Backlight pin is optional. Test and make sure whether it exists or not to prevent illegal access. |
wim | 28:30fa94f7341c | 1174 | if (bl != NC) { |
wim | 28:30fa94f7341c | 1175 | _bl = new DigitalOut(bl); //Construct new pin |
wim | 28:30fa94f7341c | 1176 | _bl->write(0); //Deactivate |
wim | 28:30fa94f7341c | 1177 | } |
wim | 28:30fa94f7341c | 1178 | else { |
wim | 28:30fa94f7341c | 1179 | // No Hardware Backlight pin |
wim | 28:30fa94f7341c | 1180 | _bl = NULL; //Construct dummy pin |
wim | 28:30fa94f7341c | 1181 | } |
wim | 28:30fa94f7341c | 1182 | |
wim | 28:30fa94f7341c | 1183 | _init(); |
wim | 28:30fa94f7341c | 1184 | } |
wim | 28:30fa94f7341c | 1185 | |
wim | 28:30fa94f7341c | 1186 | TextLCD_I2C_N::~TextLCD_I2C_N() { |
wim | 28:30fa94f7341c | 1187 | if (_bl != NULL) {delete _bl;} // BL pin |
wim | 28:30fa94f7341c | 1188 | } |
wim | 28:30fa94f7341c | 1189 | |
wim | 28:30fa94f7341c | 1190 | // Not used in this mode |
wim | 28:30fa94f7341c | 1191 | void TextLCD_I2C_N::_setEnable(bool value) { |
wim | 28:30fa94f7341c | 1192 | } |
wim | 28:30fa94f7341c | 1193 | |
wim | 28:30fa94f7341c | 1194 | // Set RS pin |
wim | 28:30fa94f7341c | 1195 | // Used for mbed pins, I2C bus expander or SPI shiftregister and native I2C or SPI |
wim | 28:30fa94f7341c | 1196 | void TextLCD_I2C_N::_setRS(bool value) { |
wim | 28:30fa94f7341c | 1197 | |
wim | 28:30fa94f7341c | 1198 | if (value) { |
wim | 28:30fa94f7341c | 1199 | _controlbyte = 0x40; // Next byte is data, No more control bytes will follow |
wim | 28:30fa94f7341c | 1200 | } |
wim | 28:30fa94f7341c | 1201 | else { |
wim | 28:30fa94f7341c | 1202 | _controlbyte = 0x00; // Next byte is command, No more control bytes will follow |
wim | 28:30fa94f7341c | 1203 | } |
wim | 28:30fa94f7341c | 1204 | } |
wim | 28:30fa94f7341c | 1205 | |
wim | 28:30fa94f7341c | 1206 | // Set BL pin |
wim | 28:30fa94f7341c | 1207 | void TextLCD_I2C_N::_setBL(bool value) { |
wim | 28:30fa94f7341c | 1208 | if (_bl) { |
wim | 28:30fa94f7341c | 1209 | _bl->write(value); |
wim | 28:30fa94f7341c | 1210 | } |
wim | 28:30fa94f7341c | 1211 | } |
wim | 28:30fa94f7341c | 1212 | |
wim | 28:30fa94f7341c | 1213 | // Write a byte using I2C |
wim | 28:30fa94f7341c | 1214 | void TextLCD_I2C_N::_writeByte(int value) { |
wim | 28:30fa94f7341c | 1215 | |
wim | 28:30fa94f7341c | 1216 | char data[] = {_controlbyte, value}; |
wim | 28:30fa94f7341c | 1217 | |
wim | 28:30fa94f7341c | 1218 | _i2c->write(_slaveAddress, data, 2); |
wim | 28:30fa94f7341c | 1219 | |
wim | 28:30fa94f7341c | 1220 | } |
wim | 28:30fa94f7341c | 1221 | |
wim | 28:30fa94f7341c | 1222 | // Not used in this mode |
wim | 28:30fa94f7341c | 1223 | void TextLCD_I2C_N::_setData(int value) { |
wim | 28:30fa94f7341c | 1224 | } |
wim | 28:30fa94f7341c | 1225 | |
wim | 28:30fa94f7341c | 1226 | |
wim | 28:30fa94f7341c | 1227 | //-------- End TextLCD_I2C_N ------------ |
wim | 28:30fa94f7341c | 1228 | |
wim | 28:30fa94f7341c | 1229 | |
wim | 28:30fa94f7341c | 1230 | |
wim | 21:9eb628d9e164 | 1231 | |
wim | 23:d47f226efb24 | 1232 | //--------- Start TextLCD_SPI ----------- |
wim | 21:9eb628d9e164 | 1233 | |
wim | 22:35742ec80c24 | 1234 | /** Create a TextLCD interface using an SPI 74595 portexpander |
wim | 22:35742ec80c24 | 1235 | * |
wim | 22:35742ec80c24 | 1236 | * @param spi SPI Bus |
wim | 22:35742ec80c24 | 1237 | * @param cs chip select pin (active low) |
wim | 22:35742ec80c24 | 1238 | * @param type Sets the panel size/addressing mode (default = LCD16x2) |
wim | 22:35742ec80c24 | 1239 | * @param ctrl LCD controller (default = HD44780) |
wim | 22:35742ec80c24 | 1240 | */ |
wim | 21:9eb628d9e164 | 1241 | TextLCD_SPI::TextLCD_SPI(SPI *spi, PinName cs, LCDType type, LCDCtrl ctrl) : |
wim | 21:9eb628d9e164 | 1242 | TextLCD_Base(type, ctrl), |
wim | 21:9eb628d9e164 | 1243 | _spi(spi), |
wim | 21:9eb628d9e164 | 1244 | _cs(cs) { |
wim | 21:9eb628d9e164 | 1245 | |
wim | 21:9eb628d9e164 | 1246 | // Setup the spi for 8 bit data, low steady state clock, |
wim | 21:9eb628d9e164 | 1247 | // rising edge capture, with a 500KHz or 1MHz clock rate |
wim | 21:9eb628d9e164 | 1248 | _spi->format(8,0); |
wim | 21:9eb628d9e164 | 1249 | _spi->frequency(500000); |
wim | 21:9eb628d9e164 | 1250 | //_spi.frequency(1000000); |
wim | 21:9eb628d9e164 | 1251 | |
wim | 21:9eb628d9e164 | 1252 | |
wim | 21:9eb628d9e164 | 1253 | // Init the portexpander bus |
wim | 21:9eb628d9e164 | 1254 | _lcd_bus = D_LCD_BUS_DEF; |
wim | 21:9eb628d9e164 | 1255 | |
wim | 21:9eb628d9e164 | 1256 | // write the new data to the portexpander |
wim | 21:9eb628d9e164 | 1257 | _setCS(false); |
wim | 21:9eb628d9e164 | 1258 | _spi->write(_lcd_bus); |
wim | 21:9eb628d9e164 | 1259 | _setCS(true); |
wim | 21:9eb628d9e164 | 1260 | |
wim | 21:9eb628d9e164 | 1261 | _init(); |
wim | 21:9eb628d9e164 | 1262 | |
wim | 21:9eb628d9e164 | 1263 | } |
wim | 21:9eb628d9e164 | 1264 | |
wim | 21:9eb628d9e164 | 1265 | // Set E pin (or E2 pin) |
wim | 21:9eb628d9e164 | 1266 | // Used for mbed pins, I2C bus expander or SPI shiftregister |
wim | 21:9eb628d9e164 | 1267 | void TextLCD_SPI::_setEnable(bool value) { |
wim | 21:9eb628d9e164 | 1268 | |
wim | 22:35742ec80c24 | 1269 | if(_ctrl_idx==_LCDCtrl_0) { |
wim | 26:bd897a001012 | 1270 | if (value) { |
wim | 22:35742ec80c24 | 1271 | _lcd_bus |= D_LCD_E; // Set E bit |
wim | 26:bd897a001012 | 1272 | } |
wim | 26:bd897a001012 | 1273 | else { |
wim | 22:35742ec80c24 | 1274 | _lcd_bus &= ~D_LCD_E; // Reset E bit |
wim | 26:bd897a001012 | 1275 | } |
wim | 22:35742ec80c24 | 1276 | } |
wim | 22:35742ec80c24 | 1277 | else { |
wim | 26:bd897a001012 | 1278 | if (value) { |
wim | 22:35742ec80c24 | 1279 | _lcd_bus |= D_LCD_E2; // Set E2 bit |
wim | 26:bd897a001012 | 1280 | } |
wim | 26:bd897a001012 | 1281 | else { |
wim | 22:35742ec80c24 | 1282 | _lcd_bus &= ~D_LCD_E2; // Reset E2 bit |
wim | 26:bd897a001012 | 1283 | } |
wim | 22:35742ec80c24 | 1284 | } |
wim | 21:9eb628d9e164 | 1285 | |
wim | 22:35742ec80c24 | 1286 | // write the new data to the SPI portexpander |
wim | 22:35742ec80c24 | 1287 | _setCS(false); |
wim | 22:35742ec80c24 | 1288 | _spi->write(_lcd_bus); |
wim | 22:35742ec80c24 | 1289 | _setCS(true); |
wim | 21:9eb628d9e164 | 1290 | |
wim | 21:9eb628d9e164 | 1291 | } |
wim | 21:9eb628d9e164 | 1292 | |
wim | 21:9eb628d9e164 | 1293 | // Set RS pin |
wim | 21:9eb628d9e164 | 1294 | // Used for mbed pins, I2C bus expander or SPI shiftregister |
wim | 21:9eb628d9e164 | 1295 | void TextLCD_SPI::_setRS(bool value) { |
wim | 21:9eb628d9e164 | 1296 | |
wim | 22:35742ec80c24 | 1297 | if (value) { |
wim | 21:9eb628d9e164 | 1298 | _lcd_bus |= D_LCD_RS; // Set RS bit |
wim | 22:35742ec80c24 | 1299 | } |
wim | 22:35742ec80c24 | 1300 | else { |
wim | 21:9eb628d9e164 | 1301 | _lcd_bus &= ~D_LCD_RS; // Reset RS bit |
wim | 22:35742ec80c24 | 1302 | } |
wim | 21:9eb628d9e164 | 1303 | |
wim | 21:9eb628d9e164 | 1304 | // write the new data to the SPI portexpander |
wim | 21:9eb628d9e164 | 1305 | _setCS(false); |
wim | 21:9eb628d9e164 | 1306 | _spi->write(_lcd_bus); |
wim | 21:9eb628d9e164 | 1307 | _setCS(true); |
wim | 21:9eb628d9e164 | 1308 | |
wim | 21:9eb628d9e164 | 1309 | } |
wim | 21:9eb628d9e164 | 1310 | |
wim | 21:9eb628d9e164 | 1311 | // Set BL pin |
wim | 21:9eb628d9e164 | 1312 | // Used for mbed pins, I2C bus expander or SPI shiftregister |
wim | 21:9eb628d9e164 | 1313 | void TextLCD_SPI::_setBL(bool value) { |
wim | 21:9eb628d9e164 | 1314 | |
wim | 22:35742ec80c24 | 1315 | if (value) { |
wim | 21:9eb628d9e164 | 1316 | _lcd_bus |= D_LCD_BL; // Set BL bit |
wim | 22:35742ec80c24 | 1317 | } |
wim | 22:35742ec80c24 | 1318 | else { |
wim | 21:9eb628d9e164 | 1319 | _lcd_bus &= ~D_LCD_BL; // Reset BL bit |
wim | 22:35742ec80c24 | 1320 | } |
wim | 21:9eb628d9e164 | 1321 | |
wim | 21:9eb628d9e164 | 1322 | // write the new data to the SPI portexpander |
wim | 21:9eb628d9e164 | 1323 | _setCS(false); |
wim | 21:9eb628d9e164 | 1324 | _spi->write(_lcd_bus); |
wim | 21:9eb628d9e164 | 1325 | _setCS(true); |
wim | 21:9eb628d9e164 | 1326 | |
wim | 21:9eb628d9e164 | 1327 | } |
wim | 21:9eb628d9e164 | 1328 | |
wim | 21:9eb628d9e164 | 1329 | |
wim | 21:9eb628d9e164 | 1330 | |
wim | 21:9eb628d9e164 | 1331 | // Place the 4bit data on the databus |
wim | 21:9eb628d9e164 | 1332 | // Used for mbed pins, I2C bus expander or SPI shiftregister |
wim | 21:9eb628d9e164 | 1333 | void TextLCD_SPI::_setData(int value) { |
wim | 21:9eb628d9e164 | 1334 | int data; |
wim | 21:9eb628d9e164 | 1335 | |
wim | 22:35742ec80c24 | 1336 | // Set bit by bit to support any mapping of expander portpins to LCD pins |
wim | 22:35742ec80c24 | 1337 | |
wim | 22:35742ec80c24 | 1338 | data = value & 0x0F; |
wim | 26:bd897a001012 | 1339 | if (data & 0x01) { |
wim | 22:35742ec80c24 | 1340 | _lcd_bus |= D_LCD_D4; // Set Databit |
wim | 26:bd897a001012 | 1341 | } |
wim | 26:bd897a001012 | 1342 | else { |
wim | 22:35742ec80c24 | 1343 | _lcd_bus &= ~D_LCD_D4; // Reset Databit |
wim | 26:bd897a001012 | 1344 | } |
wim | 26:bd897a001012 | 1345 | |
wim | 26:bd897a001012 | 1346 | if (data & 0x02) { |
wim | 22:35742ec80c24 | 1347 | _lcd_bus |= D_LCD_D5; // Set Databit |
wim | 26:bd897a001012 | 1348 | } |
wim | 26:bd897a001012 | 1349 | else { |
wim | 22:35742ec80c24 | 1350 | _lcd_bus &= ~D_LCD_D5; // Reset Databit |
wim | 26:bd897a001012 | 1351 | } |
wim | 26:bd897a001012 | 1352 | |
wim | 26:bd897a001012 | 1353 | if (data & 0x04) { |
wim | 22:35742ec80c24 | 1354 | _lcd_bus |= D_LCD_D6; // Set Databit |
wim | 26:bd897a001012 | 1355 | } |
wim | 26:bd897a001012 | 1356 | else { |
wim | 22:35742ec80c24 | 1357 | _lcd_bus &= ~D_LCD_D6; // Reset Databit |
wim | 26:bd897a001012 | 1358 | } |
wim | 26:bd897a001012 | 1359 | |
wim | 26:bd897a001012 | 1360 | if (data & 0x08) { |
wim | 22:35742ec80c24 | 1361 | _lcd_bus |= D_LCD_D7; // Set Databit |
wim | 26:bd897a001012 | 1362 | } |
wim | 26:bd897a001012 | 1363 | else { |
wim | 26:bd897a001012 | 1364 | _lcd_bus &= ~D_LCD_D7; // Reset Databit |
wim | 26:bd897a001012 | 1365 | } |
wim | 21:9eb628d9e164 | 1366 | |
wim | 22:35742ec80c24 | 1367 | // write the new data to the SPI portexpander |
wim | 22:35742ec80c24 | 1368 | _setCS(false); |
wim | 22:35742ec80c24 | 1369 | _spi->write(_lcd_bus); |
wim | 22:35742ec80c24 | 1370 | _setCS(true); |
wim | 21:9eb628d9e164 | 1371 | |
wim | 21:9eb628d9e164 | 1372 | } |
wim | 21:9eb628d9e164 | 1373 | |
wim | 21:9eb628d9e164 | 1374 | |
wim | 21:9eb628d9e164 | 1375 | // Set CS line. |
wim | 21:9eb628d9e164 | 1376 | // Only used for SPI bus |
wim | 21:9eb628d9e164 | 1377 | void TextLCD_SPI::_setCS(bool value) { |
wim | 21:9eb628d9e164 | 1378 | |
wim | 21:9eb628d9e164 | 1379 | if (value) { |
wim | 21:9eb628d9e164 | 1380 | _cs = 1; // Set CS pin |
wim | 21:9eb628d9e164 | 1381 | } |
wim | 22:35742ec80c24 | 1382 | else { |
wim | 21:9eb628d9e164 | 1383 | _cs = 0; // Reset CS pin |
wim | 22:35742ec80c24 | 1384 | } |
wim | 21:9eb628d9e164 | 1385 | } |
wim | 21:9eb628d9e164 | 1386 | |
wim | 23:d47f226efb24 | 1387 | //---------- End TextLCD_SPI ------------ |
wim | 22:35742ec80c24 | 1388 | |
wim | 22:35742ec80c24 | 1389 | |
wim | 25:6162b31128c9 | 1390 | //--------- Start TextLCD_SPI_N --------- |
Sissors | 24:fb3399713710 | 1391 | |
wim | 25:6162b31128c9 | 1392 | /** Create a TextLCD interface using a controller with a native SPI interface |
Sissors | 24:fb3399713710 | 1393 | * |
Sissors | 24:fb3399713710 | 1394 | * @param spi SPI Bus |
Sissors | 24:fb3399713710 | 1395 | * @param cs chip select pin (active low) |
wim | 25:6162b31128c9 | 1396 | * @param rs Instruction/data control line |
Sissors | 24:fb3399713710 | 1397 | * @param type Sets the panel size/addressing mode (default = LCD16x2) |
wim | 25:6162b31128c9 | 1398 | * @param bl Backlight control line (optional, default = NC) |
wim | 26:bd897a001012 | 1399 | * @param ctrl LCD controller (default = ST7032_3V3) |
wim | 25:6162b31128c9 | 1400 | */ |
wim | 25:6162b31128c9 | 1401 | TextLCD_SPI_N::TextLCD_SPI_N(SPI *spi, PinName cs, PinName rs, LCDType type, PinName bl, LCDCtrl ctrl) : |
wim | 25:6162b31128c9 | 1402 | TextLCD_Base(type, ctrl), |
wim | 25:6162b31128c9 | 1403 | _spi(spi), |
wim | 25:6162b31128c9 | 1404 | _cs(cs), |
wim | 25:6162b31128c9 | 1405 | _rs(rs) { |
Sissors | 24:fb3399713710 | 1406 | |
Sissors | 24:fb3399713710 | 1407 | // Setup the spi for 8 bit data, low steady state clock, |
Sissors | 24:fb3399713710 | 1408 | // rising edge capture, with a 500KHz or 1MHz clock rate |
Sissors | 24:fb3399713710 | 1409 | _spi->format(8,0); |
Sissors | 24:fb3399713710 | 1410 | _spi->frequency(1000000); |
Sissors | 24:fb3399713710 | 1411 | |
Sissors | 24:fb3399713710 | 1412 | // The hardware Backlight pin is optional. Test and make sure whether it exists or not to prevent illegal access. |
Sissors | 24:fb3399713710 | 1413 | if (bl != NC) { |
Sissors | 24:fb3399713710 | 1414 | _bl = new DigitalOut(bl); //Construct new pin |
Sissors | 24:fb3399713710 | 1415 | _bl->write(0); //Deactivate |
Sissors | 24:fb3399713710 | 1416 | } |
Sissors | 24:fb3399713710 | 1417 | else { |
Sissors | 24:fb3399713710 | 1418 | // No Hardware Backlight pin |
Sissors | 24:fb3399713710 | 1419 | _bl = NULL; //Construct dummy pin |
Sissors | 24:fb3399713710 | 1420 | } |
Sissors | 24:fb3399713710 | 1421 | |
Sissors | 24:fb3399713710 | 1422 | _init(); |
Sissors | 24:fb3399713710 | 1423 | } |
Sissors | 24:fb3399713710 | 1424 | |
wim | 25:6162b31128c9 | 1425 | TextLCD_SPI_N::~TextLCD_SPI_N() { |
Sissors | 24:fb3399713710 | 1426 | if (_bl != NULL) {delete _bl;} // BL pin |
Sissors | 24:fb3399713710 | 1427 | } |
Sissors | 24:fb3399713710 | 1428 | |
Sissors | 24:fb3399713710 | 1429 | // Not used in this mode |
wim | 25:6162b31128c9 | 1430 | void TextLCD_SPI_N::_setEnable(bool value) { |
Sissors | 24:fb3399713710 | 1431 | } |
Sissors | 24:fb3399713710 | 1432 | |
Sissors | 24:fb3399713710 | 1433 | // Set RS pin |
Sissors | 24:fb3399713710 | 1434 | // Used for mbed pins, I2C bus expander or SPI shiftregister |
wim | 25:6162b31128c9 | 1435 | void TextLCD_SPI_N::_setRS(bool value) { |
Sissors | 24:fb3399713710 | 1436 | _rs = value; |
Sissors | 24:fb3399713710 | 1437 | } |
Sissors | 24:fb3399713710 | 1438 | |
Sissors | 24:fb3399713710 | 1439 | // Set BL pin |
wim | 25:6162b31128c9 | 1440 | void TextLCD_SPI_N::_setBL(bool value) { |
wim | 26:bd897a001012 | 1441 | if (_bl) { |
Sissors | 24:fb3399713710 | 1442 | _bl->write(value); |
wim | 26:bd897a001012 | 1443 | } |
Sissors | 24:fb3399713710 | 1444 | } |
Sissors | 24:fb3399713710 | 1445 | |
Sissors | 24:fb3399713710 | 1446 | // Write a byte using SPI |
wim | 25:6162b31128c9 | 1447 | void TextLCD_SPI_N::_writeByte(int value) { |
Sissors | 24:fb3399713710 | 1448 | _cs = 0; |
Sissors | 24:fb3399713710 | 1449 | wait_us(1); |
Sissors | 24:fb3399713710 | 1450 | _spi->write(value); |
Sissors | 24:fb3399713710 | 1451 | wait_us(1); |
Sissors | 24:fb3399713710 | 1452 | _cs = 1; |
Sissors | 24:fb3399713710 | 1453 | } |
Sissors | 24:fb3399713710 | 1454 | |
Sissors | 24:fb3399713710 | 1455 | // Not used in this mode |
wim | 25:6162b31128c9 | 1456 | void TextLCD_SPI_N::_setData(int value) { |
Sissors | 24:fb3399713710 | 1457 | } |
Sissors | 24:fb3399713710 | 1458 | |
Sissors | 24:fb3399713710 | 1459 | |
wim | 25:6162b31128c9 | 1460 | //-------- End TextLCD_SPI_N ------------ |
wim | 21:9eb628d9e164 | 1461 | |
wim | 21:9eb628d9e164 | 1462 | |
wim | 21:9eb628d9e164 | 1463 | |
wim | 21:9eb628d9e164 | 1464 | |
wim | 21:9eb628d9e164 | 1465 |