Riko Tandil / i2c_LCD

Trying i2c LCD using TextLCD library

Fork of TextLCD by Wim Huiskamp

TextLCD.h@25:6162b31128c9, 2014-05-10 (annotated)

Committer:
wim
Date:
Sat May 10 21:34:51 2014 +0000
Revision:
25:6162b31128c9
Parent:
24:fb3399713710
Child:
26:bd897a001012
Added support for controllers with native SPI interface.

Who changed what in which revision?

UserRevisionLine numberNew 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 13:24506ba22480 3 * 2013, v01: WH, Added LCD types, fixed LCD address issues, added Cursor and UDCs
wim 15:b70ebfffb258 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 17:652ab113bc2e 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 21:9eb628d9e164 10 * 2014, v08: WH, Refactored in Base and Derived Classes to deal with mbed lib change regarding 'NC' defined DigitalOut pins
wim 25:6162b31128c9 11 * 2014, v09: WH/EO, Added Class for Native SPI controllers such as ST7032
simon 1:ac48b187213c 12 *
simon 1:ac48b187213c 13 * Permission is hereby granted, free of charge, to any person obtaining a copy
simon 1:ac48b187213c 14 * of this software and associated documentation files (the "Software"), to deal
simon 1:ac48b187213c 15 * in the Software without restriction, including without limitation the rights
simon 1:ac48b187213c 16 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
simon 1:ac48b187213c 17 * copies of the Software, and to permit persons to whom the Software is
simon 1:ac48b187213c 18 * furnished to do so, subject to the following conditions:
simon 2:227356c7d12c 19 *
simon 1:ac48b187213c 20 * The above copyright notice and this permission notice shall be included in
simon 1:ac48b187213c 21 * all copies or substantial portions of the Software.
simon 2:227356c7d12c 22 *
simon 1:ac48b187213c 23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
simon 1:ac48b187213c 24 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
simon 1:ac48b187213c 25 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
simon 1:ac48b187213c 26 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
simon 1:ac48b187213c 27 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
simon 1:ac48b187213c 28 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
simon 1:ac48b187213c 29 * THE SOFTWARE.
simon 1:ac48b187213c 30 */
simon 1:ac48b187213c 31
simon 1:ac48b187213c 32 #ifndef MBED_TEXTLCD_H
simon 1:ac48b187213c 33 #define MBED_TEXTLCD_H
simon 1:ac48b187213c 34
simon 1:ac48b187213c 35 #include "mbed.h"
simon 2:227356c7d12c 36
wim 15:b70ebfffb258 37
simon 5:a53b3e2d6f1e 38 /** A TextLCD interface for driving 4-bit HD44780-based LCDs
simon 2:227356c7d12c 39 *
wim 16:c276b75e6585 40 * Currently supports 8x1, 8x2, 12x4, 16x1, 16x2, 16x4, 20x2, 20x4, 24x2, 24x4, 40x2 and 40x4 panels
wim 22:35742ec80c24 41 * Interface options include direct mbed pins, I2C portexpander (PCF8474, PCF8574A) or SPI bus shiftregister (74595)
wim 19:c747b9e2e7b8 42 * Supports some controllers that provide internal DC/DC converters for VLCD or VLED.
simon 2:227356c7d12c 43 *
simon 2:227356c7d12c 44 * @code
simon 2:227356c7d12c 45 * #include "mbed.h"
simon 2:227356c7d12c 46 * #include "TextLCD.h"
simon 5:a53b3e2d6f1e 47 *
wim 16:c276b75e6585 48 * // I2C Communication
wim 16:c276b75e6585 49 * I2C i2c_lcd(p28,p27); // SDA, SCL
wim 16:c276b75e6585 50 *
wim 16:c276b75e6585 51 * // SPI Communication
wim 16:c276b75e6585 52 * SPI spi_lcd(p5, NC, p7); // MOSI, MISO, SCLK
wim 16:c276b75e6585 53 *
wim 22:35742ec80c24 54 * //TextLCD lcd(p15, p16, p17, p18, p19, p20); // RS, E, D4-D7, LCDType=LCD16x2, BL=NC, E2=NC, LCDTCtrl=HD44780
wim 22:35742ec80c24 55 * //TextLCD_SPI lcd(&spi_lcd, p8, TextLCD::LCD40x4); // SPI bus, CS pin, LCD Type
wim 22:35742ec80c24 56 * TextLCD_I2C lcd(&i2c_lcd, 0x42, TextLCD::LCD20x4); // I2C bus, PCF8574 Slaveaddress, LCD Type
wim 21:9eb628d9e164 57 * //TextLCD_I2C lcd(&i2c_lcd, 0x42, TextLCD::LCD16x2, TextLCD::WS0010); // I2C bus, PCF8574 Slaveaddress, LCD Type, Device Type
wim 25:6162b31128c9 58 * //TextLCD_SPI_N lcd(&spi_lcd, p8, p9); // SPI bus, CS pin, RS pin, LCDType=LCD16x2, BL=NC, LCDTCtrl=ST7032
simon 5:a53b3e2d6f1e 59 *
simon 2:227356c7d12c 60 * int main() {
wim 16:c276b75e6585 61 * lcd.printf("Hello World!\n");
simon 2:227356c7d12c 62 * }
simon 2:227356c7d12c 63 * @endcode
simon 2:227356c7d12c 64 */
wim 8:03116f75b66e 65
wim 16:c276b75e6585 66 //Pin Defines for I2C PCF8574 and SPI 74595 Bus interfaces
wim 13:24506ba22480 67 //LCD and serial portexpanders should be wired accordingly
wim 20:e0da005a777f 68 //
wim 20:e0da005a777f 69 #if (1)
wim 20:e0da005a777f 70 //Definitions for hardware used by WH
wim 13:24506ba22480 71 //Note: LCD RW pin must be connected to GND
wim 15:b70ebfffb258 72 // E2 is used for LCD40x4 (second controller)
wim 13:24506ba22480 73 // BL may be used for future expansion to control backlight
wim 15:b70ebfffb258 74 #define D_LCD_PIN_D4 0
wim 15:b70ebfffb258 75 #define D_LCD_PIN_D5 1
wim 15:b70ebfffb258 76 #define D_LCD_PIN_D6 2
wim 15:b70ebfffb258 77 #define D_LCD_PIN_D7 3
wim 15:b70ebfffb258 78 #define D_LCD_PIN_RS 4
wim 15:b70ebfffb258 79 #define D_LCD_PIN_E 5
wim 15:b70ebfffb258 80 #define D_LCD_PIN_E2 6
wim 15:b70ebfffb258 81 #define D_LCD_PIN_BL 7
wim 13:24506ba22480 82
wim 20:e0da005a777f 83 #define D_LCD_PIN_RW D_LCD_PIN_E2
wim 20:e0da005a777f 84
wim 20:e0da005a777f 85 #else
wim 20:e0da005a777f 86
wim 20:e0da005a777f 87 //Definitions for LCD2004 Module from DFROBOT, See http://arduino-info.wikispaces.com/LCD-Blue-I2C
wim 20:e0da005a777f 88 //This hardware is different from earlier/different Arduino I2C LCD displays
wim 20:e0da005a777f 89 //Note: LCD RW pin must be kept LOW
wim 20:e0da005a777f 90 // E2 is not available on default Arduino hardware and does not support LCD40x4 (second controller)
wim 20:e0da005a777f 91 // BL is used to control backlight
wim 20:e0da005a777f 92 #define D_LCD_PIN_RS 0
wim 20:e0da005a777f 93 #define D_LCD_PIN_RW 1
wim 20:e0da005a777f 94 #define D_LCD_PIN_E 2
wim 20:e0da005a777f 95 #define D_LCD_PIN_BL 3
wim 20:e0da005a777f 96 #define D_LCD_PIN_D4 4
wim 20:e0da005a777f 97 #define D_LCD_PIN_D5 5
wim 20:e0da005a777f 98 #define D_LCD_PIN_D6 6
wim 20:e0da005a777f 99 #define D_LCD_PIN_D7 7
wim 20:e0da005a777f 100
wim 20:e0da005a777f 101 #define D_LCD_PIN_E2 D_LCD_PIN_RW
wim 20:e0da005a777f 102 #endif
wim 13:24506ba22480 103
wim 13:24506ba22480 104 //Bitpattern Defines for I2C PCF8574 and SPI 74595 Bus
wim 13:24506ba22480 105 //
wim 13:24506ba22480 106 #define D_LCD_D4 (1<<D_LCD_PIN_D4)
wim 13:24506ba22480 107 #define D_LCD_D5 (1<<D_LCD_PIN_D5)
wim 13:24506ba22480 108 #define D_LCD_D6 (1<<D_LCD_PIN_D6)
wim 13:24506ba22480 109 #define D_LCD_D7 (1<<D_LCD_PIN_D7)
wim 13:24506ba22480 110 #define D_LCD_RS (1<<D_LCD_PIN_RS)
wim 13:24506ba22480 111 #define D_LCD_E (1<<D_LCD_PIN_E)
wim 13:24506ba22480 112 #define D_LCD_E2 (1<<D_LCD_PIN_E2)
wim 13:24506ba22480 113 #define D_LCD_BL (1<<D_LCD_PIN_BL)
wim 20:e0da005a777f 114 //#define D_LCD_RW (1<<D_LCD_PIN_RW)
wim 20:e0da005a777f 115
wim 20:e0da005a777f 116
wim 20:e0da005a777f 117 #define D_LCD_BUS_MSK (D_LCD_D4 | D_LCD_D5 | D_LCD_D6 | D_LCD_D7)
wim 20:e0da005a777f 118 #define D_LCD_BUS_DEF 0x00
wim 13:24506ba22480 119
wim 13:24506ba22480 120
wim 13:24506ba22480 121 /** Some sample User Defined Chars 5x7 dots */
wim 11:9ec02df863a1 122 const char udc_ae[] = {0x00, 0x00, 0x1B, 0x05, 0x1F, 0x14, 0x1F, 0x00}; //æ
wim 11:9ec02df863a1 123 const char udc_0e[] = {0x00, 0x00, 0x0E, 0x13, 0x15, 0x19, 0x0E, 0x00}; //ø
wim 11:9ec02df863a1 124 const char udc_ao[] = {0x0E, 0x0A, 0x0E, 0x01, 0x0F, 0x11, 0x0F, 0x00}; //å
wim 11:9ec02df863a1 125 const char udc_AE[] = {0x0F, 0x14, 0x14, 0x1F, 0x14, 0x14, 0x17, 0x00}; //Æ
wim 11:9ec02df863a1 126 const char udc_0E[] = {0x0E, 0x13, 0x15, 0x15, 0x15, 0x19, 0x0E, 0x00}; //Ø
wim 18:bd65dc10f27f 127 const char udc_Ao[] = {0x0E, 0x0A, 0x0E, 0x11, 0x1F, 0x11, 0x11, 0x00}; //Å
wim 18:bd65dc10f27f 128 const char udc_PO[] = {0x04, 0x0A, 0x0A, 0x1F, 0x1B, 0x1B, 0x1F, 0x00}; //Padlock Open
wim 18:bd65dc10f27f 129 const char udc_PC[] = {0x1C, 0x10, 0x08, 0x1F, 0x1B, 0x1B, 0x1F, 0x00}; //Padlock Closed
wim 11:9ec02df863a1 130
wim 11:9ec02df863a1 131 const char udc_0[] = {0x18, 0x14, 0x12, 0x11, 0x12, 0x14, 0x18, 0x00}; // |>
wim 11:9ec02df863a1 132 const char udc_1[] = {0x03, 0x05, 0x09, 0x11, 0x09, 0x05, 0x03, 0x00}; // <|
wim 11:9ec02df863a1 133 const char udc_2[] = {0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x00}; // |
wim 11:9ec02df863a1 134 const char udc_3[] = {0x14, 0x14, 0x14, 0x14, 0x14, 0x14, 0x14, 0x00}; // ||
wim 11:9ec02df863a1 135 const char udc_4[] = {0x15, 0x15, 0x15, 0x15, 0x15, 0x15, 0x15, 0x00}; // |||
wim 11:9ec02df863a1 136 const char udc_5[] = {0x00, 0x1f, 0x00, 0x1f, 0x00, 0x1f, 0x00, 0x00}; // =
wim 11:9ec02df863a1 137 const char udc_6[] = {0x15, 0x0a, 0x15, 0x0a, 0x15, 0x0a, 0x15, 0x00}; // checkerboard
wim 11:9ec02df863a1 138 const char udc_7[] = {0x10, 0x08, 0x04, 0x02, 0x01, 0x00, 0x10, 0x00}; // \
wim 11:9ec02df863a1 139
wim 13:24506ba22480 140 const char udc_degr[] = {0x06, 0x09, 0x09, 0x06, 0x00, 0x00, 0x00, 0x00}; // Degree symbol
wim 13:24506ba22480 141
wim 13:24506ba22480 142 const char udc_TM_T[] = {0x1F, 0x04, 0x04, 0x04, 0x00, 0x00, 0x00, 0x00}; // Trademark T
wim 13:24506ba22480 143 const char udc_TM_M[] = {0x11, 0x1B, 0x15, 0x11, 0x00, 0x00, 0x00, 0x00}; // Trademark M
wim 13:24506ba22480 144
wim 13:24506ba22480 145 //const char udc_Bat_Hi[] = {0x0E, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x00}; // Battery Full
wim 13:24506ba22480 146 //const char udc_Bat_Ha[] = {0x0E, 0x11, 0x13, 0x17, 0x1F, 0x1F, 0x1F, 0x00}; // Battery Half
wim 13:24506ba22480 147 //const char udc_Bat_Lo[] = {0x0E, 0x11, 0x11, 0x11, 0x11, 0x11, 0x1F, 0x00}; // Battery Low
wim 13:24506ba22480 148 const char udc_Bat_Hi[] = {0x0E, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x00}; // Battery Full
wim 13:24506ba22480 149 const char udc_Bat_Ha[] = {0x0E, 0x11, 0x11, 0x1F, 0x1F, 0x1F, 0x1F, 0x00}; // Battery Half
wim 13:24506ba22480 150 const char udc_Bat_Lo[] = {0x0E, 0x11, 0x11, 0x11, 0x11, 0x1F, 0x1F, 0x00}; // Battery Low
wim 18:bd65dc10f27f 151 const char udc_AC[] = {0x0A, 0x0A, 0x1F, 0x11, 0x0E, 0x04, 0x04, 0x00}; // AC Power
wim 13:24506ba22480 152
wim 18:bd65dc10f27f 153 //const char udc_smiley[] = {0x00, 0x0A, 0x00, 0x04, 0x11, 0x0E, 0x00, 0x00}; // Smiley
wim 18:bd65dc10f27f 154 //const char udc_droopy[] = {0x00, 0x0A, 0x00, 0x04, 0x00, 0x0E, 0x11, 0x00}; // Droopey
wim 18:bd65dc10f27f 155 //const char udc_note[] = {0x01, 0x03, 0x05, 0x09, 0x0B, 0x1B, 0x18, 0x00}; // Note
wim 18:bd65dc10f27f 156
wim 18:bd65dc10f27f 157 //const char udc_bar_1[] = {0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x00}; // Bar 1
wim 18:bd65dc10f27f 158 //const char udc_bar_2[] = {0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x00}; // Bar 11
wim 18:bd65dc10f27f 159 //const char udc_bar_3[] = {0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x00}; // Bar 111
wim 18:bd65dc10f27f 160 //const char udc_bar_4[] = {0x17, 0x17, 0x17, 0x17, 0x17, 0x17, 0x17, 0x00}; // Bar 1111
wim 18:bd65dc10f27f 161 //const char udc_bar_5[] = {0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x00}; // Bar 11111
wim 13:24506ba22480 162
wim 11:9ec02df863a1 163
wim 11:9ec02df863a1 164 /** A TextLCD interface for driving 4-bit HD44780-based LCDs
wim 11:9ec02df863a1 165 *
wim 22:35742ec80c24 166 * @brief Currently supports 8x1, 8x2, 12x2, 12x4, 16x1, 16x2, 16x4, 20x2, 20x4, 24x2, 24x4, 40x2 and 40x4 panels
wim 22:35742ec80c24 167 * Interface options include direct mbed pins, I2C portexpander (PCF8474, PCF8574A) or SPI bus shiftregister (74595)
wim 11:9ec02df863a1 168 *
wim 11:9ec02df863a1 169 */
wim 21:9eb628d9e164 170 class TextLCD_Base : public Stream {
simon 1:ac48b187213c 171 public:
simon 1:ac48b187213c 172
simon 2:227356c7d12c 173 /** LCD panel format */
simon 1:ac48b187213c 174 enum LCDType {
wim 8:03116f75b66e 175 LCD8x1, /**< 8x1 LCD panel */
wim 13:24506ba22480 176 LCD8x2, /**< 8x2 LCD panel */
wim 18:bd65dc10f27f 177 LCD8x2B, /**< 8x2 LCD panel (actually 16x1) */
wim 15:b70ebfffb258 178 LCD12x2, /**< 12x2 LCD panel */
wim 15:b70ebfffb258 179 LCD12x4, /**< 12x4 LCD panel */
wim 13:24506ba22480 180 LCD16x1, /**< 16x1 LCD panel (actually 8x2) */
wim 8:03116f75b66e 181 LCD16x2, /**< 16x2 LCD panel (default) */
wim 8:03116f75b66e 182 LCD16x2B, /**< 16x2 LCD panel alternate addressing */
wim 8:03116f75b66e 183 LCD16x4, /**< 16x4 LCD panel */
wim 8:03116f75b66e 184 LCD20x2, /**< 20x2 LCD panel */
wim 8:03116f75b66e 185 LCD20x4, /**< 20x4 LCD panel */
wim 9:0893d986e717 186 LCD24x2, /**< 24x2 LCD panel */
wim 10:dd9b3a696acd 187 LCD24x4, /**< 24x4 LCD panel, special mode KS0078 */
wim 15:b70ebfffb258 188 LCD40x2, /**< 40x2 LCD panel */
wim 15:b70ebfffb258 189 LCD40x4 /**< 40x4 LCD panel, Two controller version */
simon 1:ac48b187213c 190 };
simon 1:ac48b187213c 191
wim 19:c747b9e2e7b8 192 /** LCD Controller Device */
wim 19:c747b9e2e7b8 193 enum LCDCtrl {
wim 19:c747b9e2e7b8 194 HD44780, /**< HD44780 (default) */
wim 19:c747b9e2e7b8 195 WS0010, /**< WS0010 OLED Controller */
Sissors 24:fb3399713710 196 ST7036, /**< ST7036 */
Sissors 24:fb3399713710 197 ST7032 /**< ST7032 */
wim 19:c747b9e2e7b8 198 };
wim 19:c747b9e2e7b8 199
wim 19:c747b9e2e7b8 200
wim 10:dd9b3a696acd 201 /** LCD Cursor control */
wim 10:dd9b3a696acd 202 enum LCDCursor {
wim 17:652ab113bc2e 203 CurOff_BlkOff = 0x00, /**< Cursor Off, Blinking Char Off */
wim 17:652ab113bc2e 204 CurOn_BlkOff = 0x02, /**< Cursor On, Blinking Char Off */
wim 17:652ab113bc2e 205 CurOff_BlkOn = 0x01, /**< Cursor Off, Blinking Char On */
wim 17:652ab113bc2e 206 CurOn_BlkOn = 0x03 /**< Cursor On, Blinking Char On */
wim 17:652ab113bc2e 207 };
wim 17:652ab113bc2e 208
wim 17:652ab113bc2e 209
wim 17:652ab113bc2e 210 /** LCD Display control */
wim 17:652ab113bc2e 211 enum LCDMode {
wim 17:652ab113bc2e 212 DispOff = 0x00, /**< Display Off */
wim 17:652ab113bc2e 213 DispOn = 0x04 /**< Display On */
wim 10:dd9b3a696acd 214 };
wim 10:dd9b3a696acd 215
wim 20:e0da005a777f 216 /** LCD Backlight control */
wim 20:e0da005a777f 217 enum LCDBacklight {
wim 20:e0da005a777f 218 LightOff, /**< Backlight Off */
wim 20:e0da005a777f 219 LightOn /**< Backlight On */
wim 20:e0da005a777f 220 };
wim 10:dd9b3a696acd 221
simon 2:227356c7d12c 222
simon 2:227356c7d12c 223 #if DOXYGEN_ONLY
simon 2:227356c7d12c 224 /** Write a character to the LCD
simon 2:227356c7d12c 225 *
simon 2:227356c7d12c 226 * @param c The character to write to the display
simon 2:227356c7d12c 227 */
simon 2:227356c7d12c 228 int putc(int c);
simon 2:227356c7d12c 229
simon 2:227356c7d12c 230 /** Write a formated string to the LCD
simon 2:227356c7d12c 231 *
simon 2:227356c7d12c 232 * @param format A printf-style format string, followed by the
simon 2:227356c7d12c 233 * variables to use in formating the string.
simon 2:227356c7d12c 234 */
simon 2:227356c7d12c 235 int printf(const char* format, ...);
simon 2:227356c7d12c 236 #endif
simon 2:227356c7d12c 237
simon 2:227356c7d12c 238 /** Locate to a screen column and row
simon 2:227356c7d12c 239 *
simon 2:227356c7d12c 240 * @param column The horizontal position from the left, indexed from 0
simon 2:227356c7d12c 241 * @param row The vertical position from the top, indexed from 0
simon 2:227356c7d12c 242 */
simon 1:ac48b187213c 243 void locate(int column, int row);
simon 2:227356c7d12c 244
wim 10:dd9b3a696acd 245
wim 10:dd9b3a696acd 246 /** Return the memoryaddress of screen column and row location
wim 10:dd9b3a696acd 247 *
wim 10:dd9b3a696acd 248 * @param column The horizontal position from the left, indexed from 0
wim 10:dd9b3a696acd 249 * @param row The vertical position from the top, indexed from 0
wim 10:dd9b3a696acd 250 * @param return The memoryaddress of screen column and row location
wim 10:dd9b3a696acd 251 */
wim 9:0893d986e717 252 int getAddress(int column, int row);
wim 10:dd9b3a696acd 253
wim 10:dd9b3a696acd 254
wim 10:dd9b3a696acd 255 /** Set the memoryaddress of screen column and row location
wim 10:dd9b3a696acd 256 *
wim 10:dd9b3a696acd 257 * @param column The horizontal position from the left, indexed from 0
wim 10:dd9b3a696acd 258 * @param row The vertical position from the top, indexed from 0
wim 10:dd9b3a696acd 259 */
wim 9:0893d986e717 260 void setAddress(int column, int row);
wim 9:0893d986e717 261
wim 10:dd9b3a696acd 262
wim 22:35742ec80c24 263 /** Clear the screen and locate to 0,0
wim 22:35742ec80c24 264 */
simon 1:ac48b187213c 265 void cls();
simon 2:227356c7d12c 266
wim 10:dd9b3a696acd 267 /** Return the number of rows
wim 10:dd9b3a696acd 268 *
wim 10:dd9b3a696acd 269 * @param return The number of rows
wim 10:dd9b3a696acd 270 */
simon 1:ac48b187213c 271 int rows();
wim 10:dd9b3a696acd 272
wim 10:dd9b3a696acd 273 /** Return the number of columns
wim 10:dd9b3a696acd 274 *
wim 10:dd9b3a696acd 275 * @param return The number of columns
wim 10:dd9b3a696acd 276 */
wim 10:dd9b3a696acd 277 int columns();
simon 2:227356c7d12c 278
wim 11:9ec02df863a1 279 /** Set the Cursormode
wim 11:9ec02df863a1 280 *
wim 17:652ab113bc2e 281 * @param cursorMode The Cursor mode (CurOff_BlkOff, CurOn_BlkOff, CurOff_BlkOn, CurOn_BlkOn)
wim 11:9ec02df863a1 282 */
wim 17:652ab113bc2e 283 void setCursor(LCDCursor cursorMode);
wim 17:652ab113bc2e 284
wim 17:652ab113bc2e 285
wim 17:652ab113bc2e 286 /** Set the Displaymode
wim 17:652ab113bc2e 287 *
wim 17:652ab113bc2e 288 * @param displayMode The Display mode (DispOff, DispOn)
wim 17:652ab113bc2e 289 */
wim 21:9eb628d9e164 290 void setMode(LCDMode displayMode);
wim 11:9ec02df863a1 291
wim 20:e0da005a777f 292 /** Set the Backlight mode
wim 20:e0da005a777f 293 *
wim 21:9eb628d9e164 294 * @param backlightMode The Backlight mode (LightOff, LightOn)
wim 20:e0da005a777f 295 */
wim 21:9eb628d9e164 296 void setBacklight(LCDBacklight backlightMode);
wim 20:e0da005a777f 297
wim 11:9ec02df863a1 298
wim 11:9ec02df863a1 299 /** Set User Defined Characters
wim 11:9ec02df863a1 300 *
wim 11:9ec02df863a1 301 * @param unsigned char c The Index of the UDC (0..7)
wim 12:6bf9d9957d31 302 * @param char *udc_data The bitpatterns for the UDC (8 bytes of 5 significant bits)
wim 11:9ec02df863a1 303 */
wim 11:9ec02df863a1 304 void setUDC(unsigned char c, char *udc_data);
wim 11:9ec02df863a1 305
wim 20:e0da005a777f 306
simon 1:ac48b187213c 307 protected:
wim 13:24506ba22480 308
wim 21:9eb628d9e164 309 /** LCD controller select, mainly used for LCD40x4
wim 21:9eb628d9e164 310 */
wim 19:c747b9e2e7b8 311 enum _LCDCtrl_Idx {
wim 15:b70ebfffb258 312 _LCDCtrl_0, /*< Primary */
wim 15:b70ebfffb258 313 _LCDCtrl_1, /*< Secondary */
wim 15:b70ebfffb258 314 };
wim 21:9eb628d9e164 315
wim 21:9eb628d9e164 316 /** Create a TextLCD_Base interface
wim 21:9eb628d9e164 317 * @brief Base class, can not be instantiated
wim 21:9eb628d9e164 318 *
wim 21:9eb628d9e164 319 * @param type Sets the panel size/addressing mode (default = LCD16x2)
wim 21:9eb628d9e164 320 * @param ctrl LCD controller (default = HD44780)
wim 21:9eb628d9e164 321 */
wim 21:9eb628d9e164 322 TextLCD_Base(LCDType type = LCD16x2, LCDCtrl ctrl = HD44780);
wim 21:9eb628d9e164 323
wim 15:b70ebfffb258 324
simon 1:ac48b187213c 325 // Stream implementation functions
simon 1:ac48b187213c 326 virtual int _putc(int value);
simon 1:ac48b187213c 327 virtual int _getc();
simon 1:ac48b187213c 328
wim 21:9eb628d9e164 329 /** Low level methods for LCD controller
wim 21:9eb628d9e164 330 */
wim 13:24506ba22480 331 void _init();
wim 15:b70ebfffb258 332 void _initCtrl();
wim 13:24506ba22480 333 int _address(int column, int row);
wim 21:9eb628d9e164 334 void _setCursor(LCDCursor show);
wim 17:652ab113bc2e 335 void _setUDC(unsigned char c, char *udc_data);
wim 21:9eb628d9e164 336 void _setCursorAndDisplayMode(LCDMode displayMode, LCDCursor cursorType);
wim 13:24506ba22480 337
wim 21:9eb628d9e164 338 /** Low level write operations to LCD controller
wim 21:9eb628d9e164 339 */
wim 17:652ab113bc2e 340 void _writeNibble(int value);
Sissors 24:fb3399713710 341 virtual void _writeByte(int value);
wim 15:b70ebfffb258 342 void _writeCommand(int command);
wim 15:b70ebfffb258 343 void _writeData(int data);
wim 15:b70ebfffb258 344
wim 21:9eb628d9e164 345 /** Pure Virtual Low level writes to LCD Bus (serial or parallel)
wim 21:9eb628d9e164 346 */
wim 21:9eb628d9e164 347 virtual void _setEnable(bool value) = 0;
wim 21:9eb628d9e164 348 virtual void _setRS(bool value) = 0;
wim 21:9eb628d9e164 349 virtual void _setBL(bool value) = 0;
wim 21:9eb628d9e164 350 virtual void _setData(int value) = 0;
wim 13:24506ba22480 351
wim 13:24506ba22480 352
wim 13:24506ba22480 353 //Display type
simon 1:ac48b187213c 354 LCDType _type;
simon 1:ac48b187213c 355
wim 21:9eb628d9e164 356 //Display mode
wim 17:652ab113bc2e 357 LCDMode _currentMode;
wim 17:652ab113bc2e 358
wim 19:c747b9e2e7b8 359 //Controller type
wim 19:c747b9e2e7b8 360 LCDCtrl _ctrl;
wim 19:c747b9e2e7b8 361
wim 15:b70ebfffb258 362 //Controller select, mainly used for LCD40x4
wim 19:c747b9e2e7b8 363 _LCDCtrl_Idx _ctrl_idx;
wim 15:b70ebfffb258 364
wim 13:24506ba22480 365 // Cursor
simon 1:ac48b187213c 366 int _column;
simon 1:ac48b187213c 367 int _row;
wim 15:b70ebfffb258 368 LCDCursor _currentCursor;
simon 1:ac48b187213c 369 };
simon 1:ac48b187213c 370
wim 23:d47f226efb24 371 //--------- End TextLCD_Base -----------
wim 22:35742ec80c24 372
wim 22:35742ec80c24 373
wim 22:35742ec80c24 374
wim 23:d47f226efb24 375 //--------- Start TextLCD Bus -----------
wim 21:9eb628d9e164 376
wim 21:9eb628d9e164 377 /** Create a TextLCD interface for using regular mbed pins
wim 21:9eb628d9e164 378 *
wim 21:9eb628d9e164 379 */
wim 21:9eb628d9e164 380 class TextLCD : public TextLCD_Base {
wim 21:9eb628d9e164 381 public:
wim 21:9eb628d9e164 382 /** Create a TextLCD interface for using regular mbed pins
wim 21:9eb628d9e164 383 *
wim 21:9eb628d9e164 384 * @param rs Instruction/data control line
wim 21:9eb628d9e164 385 * @param e Enable line (clock)
wim 21:9eb628d9e164 386 * @param d4-d7 Data lines for using as a 4-bit interface
wim 21:9eb628d9e164 387 * @param type Sets the panel size/addressing mode (default = LCD16x2)
wim 21:9eb628d9e164 388 * @param bl Backlight control line (optional, default = NC)
wim 21:9eb628d9e164 389 * @param e2 Enable2 line (clock for second controller, LCD40x4 only)
wim 21:9eb628d9e164 390 * @param ctrl LCD controller (default = HD44780)
wim 21:9eb628d9e164 391 */
wim 21:9eb628d9e164 392 TextLCD(PinName rs, PinName e, PinName d4, PinName d5, PinName d6, PinName d7, LCDType type = LCD16x2, PinName bl = NC, PinName e2 = NC, LCDCtrl ctrl = HD44780);
wim 21:9eb628d9e164 393
wim 22:35742ec80c24 394
wim 22:35742ec80c24 395 /** Destruct a TextLCD interface for using regular mbed pins
wim 22:35742ec80c24 396 *
wim 22:35742ec80c24 397 * @param none
wim 22:35742ec80c24 398 * @return none
wim 22:35742ec80c24 399 */
wim 22:35742ec80c24 400 virtual ~TextLCD();
wim 22:35742ec80c24 401
wim 21:9eb628d9e164 402 private:
wim 21:9eb628d9e164 403 //Low level writes to LCD Bus (serial or parallel)
wim 21:9eb628d9e164 404 virtual void _setEnable(bool value);
wim 21:9eb628d9e164 405 virtual void _setRS(bool value);
wim 21:9eb628d9e164 406 virtual void _setBL(bool value);
wim 21:9eb628d9e164 407 virtual void _setData(int value);
wim 21:9eb628d9e164 408
wim 22:35742ec80c24 409 /** Regular mbed pins bus
wim 22:35742ec80c24 410 */
wim 22:35742ec80c24 411 DigitalOut _rs, _e;
wim 22:35742ec80c24 412 BusOut _d;
wim 22:35742ec80c24 413
wim 22:35742ec80c24 414 /** Optional Hardware pins for the Backlight and LCD40x4 device
wim 22:35742ec80c24 415 * Default PinName value is NC, must be used as pointer to avoid issues with mbed lib and DigitalOut pins
wim 22:35742ec80c24 416 */
wim 22:35742ec80c24 417 DigitalOut *_bl, *_e2;
wim 21:9eb628d9e164 418 };
wim 21:9eb628d9e164 419
wim 22:35742ec80c24 420
wim 23:d47f226efb24 421 //----------- End TextLCD ---------------
wim 21:9eb628d9e164 422
wim 21:9eb628d9e164 423
wim 23:d47f226efb24 424 //--------- Start TextLCD_I2C -----------
wim 22:35742ec80c24 425
wim 22:35742ec80c24 426
wim 22:35742ec80c24 427 /** Create a TextLCD interface using an I2C PC8574 or PCF8574A portexpander
wim 21:9eb628d9e164 428 *
wim 21:9eb628d9e164 429 */
wim 21:9eb628d9e164 430 class TextLCD_I2C : public TextLCD_Base {
wim 21:9eb628d9e164 431 public:
wim 22:35742ec80c24 432 /** Create a TextLCD interface using an I2C PC8574 or PCF8574A portexpander
wim 21:9eb628d9e164 433 *
wim 21:9eb628d9e164 434 * @param i2c I2C Bus
wim 22:35742ec80c24 435 * @param deviceAddress I2C slave address (PCF8574 or PCF8574A, default = 0x40)
wim 21:9eb628d9e164 436 * @param type Sets the panel size/addressing mode (default = LCD16x2)
wim 21:9eb628d9e164 437 * @param ctrl LCD controller (default = HD44780)
wim 21:9eb628d9e164 438 */
wim 22:35742ec80c24 439 TextLCD_I2C(I2C *i2c, char deviceAddress = 0x40, LCDType type = LCD16x2, LCDCtrl ctrl = HD44780);
wim 21:9eb628d9e164 440
wim 21:9eb628d9e164 441 private:
wim 21:9eb628d9e164 442 //Low level writes to LCD Bus (serial or parallel)
wim 21:9eb628d9e164 443 virtual void _setEnable(bool value);
wim 21:9eb628d9e164 444 virtual void _setRS(bool value);
wim 21:9eb628d9e164 445 virtual void _setBL(bool value);
wim 21:9eb628d9e164 446 virtual void _setData(int value);
wim 21:9eb628d9e164 447
wim 21:9eb628d9e164 448 //I2C bus
wim 21:9eb628d9e164 449 I2C *_i2c;
wim 21:9eb628d9e164 450 char _slaveAddress;
wim 21:9eb628d9e164 451
wim 21:9eb628d9e164 452 // Internal bus mirror value for serial bus only
wim 21:9eb628d9e164 453 char _lcd_bus;
wim 21:9eb628d9e164 454
wim 21:9eb628d9e164 455 };
wim 21:9eb628d9e164 456
wim 21:9eb628d9e164 457
wim 23:d47f226efb24 458 //---------- End TextLCD_I2C ------------
wim 22:35742ec80c24 459
wim 22:35742ec80c24 460
wim 22:35742ec80c24 461
wim 23:d47f226efb24 462 //--------- Start TextLCD_SPI -----------
wim 22:35742ec80c24 463
wim 21:9eb628d9e164 464
wim 21:9eb628d9e164 465 /** Create a TextLCD interface using an SPI 74595 portexpander
wim 21:9eb628d9e164 466 *
wim 21:9eb628d9e164 467 */
wim 21:9eb628d9e164 468 class TextLCD_SPI : public TextLCD_Base {
wim 21:9eb628d9e164 469 public:
wim 21:9eb628d9e164 470 /** Create a TextLCD interface using an SPI 74595 portexpander
wim 21:9eb628d9e164 471 *
wim 21:9eb628d9e164 472 * @param spi SPI Bus
wim 21:9eb628d9e164 473 * @param cs chip select pin (active low)
wim 21:9eb628d9e164 474 * @param type Sets the panel size/addressing mode (default = LCD16x2)
wim 21:9eb628d9e164 475 * @param ctrl LCD controller (default = HD44780)
wim 21:9eb628d9e164 476 */
wim 21:9eb628d9e164 477 TextLCD_SPI(SPI *spi, PinName cs, LCDType type = LCD16x2, LCDCtrl ctrl = HD44780);
wim 21:9eb628d9e164 478
wim 21:9eb628d9e164 479
wim 21:9eb628d9e164 480 private:
wim 21:9eb628d9e164 481 //Low level writes to LCD Bus (serial or parallel)
wim 21:9eb628d9e164 482 virtual void _setEnable(bool value);
wim 21:9eb628d9e164 483 virtual void _setRS(bool value);
wim 21:9eb628d9e164 484 virtual void _setBL(bool value);
wim 21:9eb628d9e164 485 virtual void _setData(int value);
wim 21:9eb628d9e164 486 virtual void _setCS(bool value);
wim 21:9eb628d9e164 487
wim 21:9eb628d9e164 488 //Low level writes to LCD serial bus only
wim 21:9eb628d9e164 489 void _writeBus();
wim 21:9eb628d9e164 490
wim 21:9eb628d9e164 491 // SPI bus
wim 21:9eb628d9e164 492 SPI *_spi;
wim 21:9eb628d9e164 493 DigitalOut _cs;
wim 21:9eb628d9e164 494
wim 21:9eb628d9e164 495 // Internal bus mirror value for serial bus only
wim 21:9eb628d9e164 496 char _lcd_bus;
wim 21:9eb628d9e164 497
wim 21:9eb628d9e164 498 };
wim 21:9eb628d9e164 499
wim 23:d47f226efb24 500 //---------- End TextLCD_SPI ------------
wim 21:9eb628d9e164 501
Sissors 24:fb3399713710 502
Sissors 24:fb3399713710 503 //--------- Start TextLCD_NativeSPI -----------
Sissors 24:fb3399713710 504
Sissors 24:fb3399713710 505
wim 25:6162b31128c9 506 /** Create a TextLCD interface using a controller with native SPI interface
Sissors 24:fb3399713710 507 *
Sissors 24:fb3399713710 508 */
wim 25:6162b31128c9 509 class TextLCD_SPI_N : public TextLCD_Base {
Sissors 24:fb3399713710 510 public:
wim 25:6162b31128c9 511 /** Create a TextLCD interface using a controller with native SPI interface
Sissors 24:fb3399713710 512 *
Sissors 24:fb3399713710 513 * @param spi SPI Bus
Sissors 24:fb3399713710 514 * @param cs chip select pin (active low)
Sissors 24:fb3399713710 515 * @param rs Instruction/data control line
Sissors 24:fb3399713710 516 * @param type Sets the panel size/addressing mode (default = LCD16x2)
Sissors 24:fb3399713710 517 * @param bl Backlight control line (optional, default = NC)
Sissors 24:fb3399713710 518 * @param ctrl LCD controller (default = ST7032)
Sissors 24:fb3399713710 519 */
wim 25:6162b31128c9 520 TextLCD_SPI_N(SPI *spi, PinName cs, PinName rs, LCDType type = LCD16x2, PinName bl = NC, LCDCtrl ctrl = ST7032);
wim 25:6162b31128c9 521 virtual ~TextLCD_SPI_N(void);
Sissors 24:fb3399713710 522
Sissors 24:fb3399713710 523 private:
Sissors 24:fb3399713710 524 virtual void _setEnable(bool value);
Sissors 24:fb3399713710 525 virtual void _setRS(bool value);
Sissors 24:fb3399713710 526 virtual void _setBL(bool value);
Sissors 24:fb3399713710 527 virtual void _setData(int value);
Sissors 24:fb3399713710 528 virtual void _writeByte(int value);
Sissors 24:fb3399713710 529
Sissors 24:fb3399713710 530 // SPI bus
Sissors 24:fb3399713710 531 SPI *_spi;
Sissors 24:fb3399713710 532 DigitalOut _cs;
Sissors 24:fb3399713710 533 DigitalOut _rs;
Sissors 24:fb3399713710 534 DigitalOut *_bl;
Sissors 24:fb3399713710 535
Sissors 24:fb3399713710 536 };
Sissors 24:fb3399713710 537
wim 25:6162b31128c9 538 //---------- End TextLCD_SPI_N ------------
Sissors 24:fb3399713710 539
simon 1:ac48b187213c 540 #endif