Elmicro Computer / Mbed 2 deprecated TestBed-LCD20x4

Example of using a GDM2004D LCD with Elmicro\'s TestBed for mbed carrier board. Uses an altered version of the TextLCD-library.

Dependencies:   mbed

TextLCD/TextLCD.h@0:7c694e032688, 2011-10-11 (annotated)

Committer:
elmicro
Date:
Tue Oct 11 08:13:19 2011 +0000
Revision:
0:7c694e032688
Initial Revision

Who changed what in which revision?

UserRevisionLine numberNew contents of line
elmicro 0:7c694e032688 1 /* mbed TextLCD Library, for a 4-bit LCD based on HD44780
elmicro 0:7c694e032688 2 * Copyright (c) 2007-2010, sford, http://mbed.org
elmicro 0:7c694e032688 3 *
elmicro 0:7c694e032688 4 * Permission is hereby granted, free of charge, to any person obtaining a copy
elmicro 0:7c694e032688 5 * of this software and associated documentation files (the "Software"), to deal
elmicro 0:7c694e032688 6 * in the Software without restriction, including without limitation the rights
elmicro 0:7c694e032688 7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
elmicro 0:7c694e032688 8 * copies of the Software, and to permit persons to whom the Software is
elmicro 0:7c694e032688 9 * furnished to do so, subject to the following conditions:
elmicro 0:7c694e032688 10 *
elmicro 0:7c694e032688 11 * The above copyright notice and this permission notice shall be included in
elmicro 0:7c694e032688 12 * all copies or substantial portions of the Software.
elmicro 0:7c694e032688 13 *
elmicro 0:7c694e032688 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
elmicro 0:7c694e032688 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
elmicro 0:7c694e032688 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
elmicro 0:7c694e032688 17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
elmicro 0:7c694e032688 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
elmicro 0:7c694e032688 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
elmicro 0:7c694e032688 20 * THE SOFTWARE.
elmicro 0:7c694e032688 21 */
elmicro 0:7c694e032688 22
elmicro 0:7c694e032688 23 #ifndef MBED_TEXTLCD_H
elmicro 0:7c694e032688 24 #define MBED_TEXTLCD_H
elmicro 0:7c694e032688 25
elmicro 0:7c694e032688 26 #include "mbed.h"
elmicro 0:7c694e032688 27
elmicro 0:7c694e032688 28 /** A TextLCD interface for driving 4-bit HD44780-based LCDs
elmicro 0:7c694e032688 29 *
elmicro 0:7c694e032688 30 * Currently supports 16x2, 20x2 and 20x4 panels
elmicro 0:7c694e032688 31 *
elmicro 0:7c694e032688 32 * @code
elmicro 0:7c694e032688 33 * #include "mbed.h"
elmicro 0:7c694e032688 34 * #include "TextLCD.h"
elmicro 0:7c694e032688 35 *
elmicro 0:7c694e032688 36 * TextLCD lcd(p10, p12, p15, p16, p29, p30); // rs, e, d4-d7
elmicro 0:7c694e032688 37 *
elmicro 0:7c694e032688 38 * int main() {
elmicro 0:7c694e032688 39 * lcd.printf("Hello World!\n");
elmicro 0:7c694e032688 40 * }
elmicro 0:7c694e032688 41 * @endcode
elmicro 0:7c694e032688 42 */
elmicro 0:7c694e032688 43 class TextLCD : public Stream {
elmicro 0:7c694e032688 44 public:
elmicro 0:7c694e032688 45
elmicro 0:7c694e032688 46 /** LCD panel format */
elmicro 0:7c694e032688 47 enum LCDType {
elmicro 0:7c694e032688 48 LCD16x2 /**< 16x2 LCD panel (default) */
elmicro 0:7c694e032688 49 , LCD16x2B /**< 16x2 LCD panel alternate addressing */
elmicro 0:7c694e032688 50 , LCD20x2 /**< 20x2 LCD panel */
elmicro 0:7c694e032688 51 , LCD20x4 /**< 20x4 LCD panel */
elmicro 0:7c694e032688 52 };
elmicro 0:7c694e032688 53
elmicro 0:7c694e032688 54 /** Create a TextLCD interface
elmicro 0:7c694e032688 55 *
elmicro 0:7c694e032688 56 * @param rs Instruction/data control line
elmicro 0:7c694e032688 57 * @param e Enable line (clock)
elmicro 0:7c694e032688 58 * @param d4-d7 Data lines for using as a 4-bit interface
elmicro 0:7c694e032688 59 * @param type Sets the panel size/addressing mode (default = LCD16x2)
elmicro 0:7c694e032688 60 */
elmicro 0:7c694e032688 61 TextLCD(PinName rs, PinName rw, PinName e, PinName d4, PinName d5, PinName d6, PinName d7, LCDType type = LCD16x2);
elmicro 0:7c694e032688 62
elmicro 0:7c694e032688 63 #if DOXYGEN_ONLY
elmicro 0:7c694e032688 64 /** Write a character to the LCD
elmicro 0:7c694e032688 65 *
elmicro 0:7c694e032688 66 * @param c The character to write to the display
elmicro 0:7c694e032688 67 */
elmicro 0:7c694e032688 68 int putc(int c);
elmicro 0:7c694e032688 69
elmicro 0:7c694e032688 70 /** Write a formated string to the LCD
elmicro 0:7c694e032688 71 *
elmicro 0:7c694e032688 72 * @param format A printf-style format string, followed by the
elmicro 0:7c694e032688 73 * variables to use in formating the string.
elmicro 0:7c694e032688 74 */
elmicro 0:7c694e032688 75 int printf(const char* format, ...);
elmicro 0:7c694e032688 76 #endif
elmicro 0:7c694e032688 77
elmicro 0:7c694e032688 78 /** Locate to a screen column and row
elmicro 0:7c694e032688 79 *
elmicro 0:7c694e032688 80 * @param column The horizontal position from the left, indexed from 0
elmicro 0:7c694e032688 81 * @param row The vertical position from the top, indexed from 0
elmicro 0:7c694e032688 82 */
elmicro 0:7c694e032688 83 void locate(int column, int row);
elmicro 0:7c694e032688 84
elmicro 0:7c694e032688 85 /** Clear the screen and locate to 0,0 */
elmicro 0:7c694e032688 86 void cls();
elmicro 0:7c694e032688 87
elmicro 0:7c694e032688 88 int rows();
elmicro 0:7c694e032688 89 int columns();
elmicro 0:7c694e032688 90
elmicro 0:7c694e032688 91 protected:
elmicro 0:7c694e032688 92
elmicro 0:7c694e032688 93 // Stream implementation functions
elmicro 0:7c694e032688 94 virtual int _putc(int value);
elmicro 0:7c694e032688 95 virtual int _getc();
elmicro 0:7c694e032688 96
elmicro 0:7c694e032688 97 int address(int column, int row);
elmicro 0:7c694e032688 98 void character(int column, int row, int c);
elmicro 0:7c694e032688 99 void writeByte(int value);
elmicro 0:7c694e032688 100 void writeCommand(int command);
elmicro 0:7c694e032688 101 void writeData(int data);
elmicro 0:7c694e032688 102 void writeNibble(int data);
elmicro 0:7c694e032688 103 void clock(void);
elmicro 0:7c694e032688 104
elmicro 0:7c694e032688 105 DigitalOut _rs, _rw, _e;
elmicro 0:7c694e032688 106 BusOut _d;
elmicro 0:7c694e032688 107 LCDType _type;
elmicro 0:7c694e032688 108
elmicro 0:7c694e032688 109 int _column;
elmicro 0:7c694e032688 110 int _row;
elmicro 0:7c694e032688 111 };
elmicro 0:7c694e032688 112
elmicro 0:7c694e032688 113 #endif