Sukkin Pang / TextLCD

LCD driver

Dependents:   ecu_reader ecu_reader ecu_simulator regulator_napona

TextLCD.h@0:ec079a141883, 2012-07-27 (annotated)

Committer:
pangsk
Date:
Fri Jul 27 15:06:59 2012 +0000
Revision:
0:ec079a141883
[mbed] converted /ecu_reader/TextLCD

Who changed what in which revision?

UserRevisionLine numberNew contents of line
pangsk 0:ec079a141883 1 /* mbed TextLCD Library
pangsk 0:ec079a141883 2 * Copyright (c) 2007-2009 sford
pangsk 0:ec079a141883 3 * Released under the MIT License: http://mbed.org/license/mit
pangsk 0:ec079a141883 4 */
pangsk 0:ec079a141883 5
pangsk 0:ec079a141883 6 #ifndef MBED_TEXTLCD_H
pangsk 0:ec079a141883 7 #define MBED_TEXTLCD_H
pangsk 0:ec079a141883 8
pangsk 0:ec079a141883 9 #include "Stream.h"
pangsk 0:ec079a141883 10 #include "DigitalOut.h"
pangsk 0:ec079a141883 11 #include "BusOut.h"
pangsk 0:ec079a141883 12
pangsk 0:ec079a141883 13 namespace mbed {
pangsk 0:ec079a141883 14
pangsk 0:ec079a141883 15 /* Class: TextLCD
pangsk 0:ec079a141883 16 * A 16x2 Text LCD controller
pangsk 0:ec079a141883 17 *
pangsk 0:ec079a141883 18 * Allows you to print to a Text LCD screen, and locate/cls. Could be
pangsk 0:ec079a141883 19 * turned in to a more generic libray.
pangsk 0:ec079a141883 20 *
pangsk 0:ec079a141883 21 * If you are connecting multiple displays, you can connect them all in
pangsk 0:ec079a141883 22 * parallel except for the enable (e) pin, which must be unique for each
pangsk 0:ec079a141883 23 * display.
pangsk 0:ec079a141883 24 *
pangsk 0:ec079a141883 25 * Example:
pangsk 0:ec079a141883 26 * > #include "mbed.h"
pangsk 0:ec079a141883 27 * > #include "TextLCD.h"
pangsk 0:ec079a141883 28 * >
pangsk 0:ec079a141883 29 * > TextLCD lcd(p24, p25, p26, p27, p28, p29, p30); // rs, rw, e, d0, d1, d2, d3
pangsk 0:ec079a141883 30 * >
pangsk 0:ec079a141883 31 * > int main() {
pangsk 0:ec079a141883 32 * > lcd.printf("Hello World!");
pangsk 0:ec079a141883 33 * > }
pangsk 0:ec079a141883 34 */
pangsk 0:ec079a141883 35 class TextLCD : public Stream {
pangsk 0:ec079a141883 36
pangsk 0:ec079a141883 37 public:
pangsk 0:ec079a141883 38 /* Constructor: TextLCD
pangsk 0:ec079a141883 39 * Create a TextLCD object, connected to the specified pins
pangsk 0:ec079a141883 40 *
pangsk 0:ec079a141883 41 * All signals must be connected to DigitalIn compatible pins.
pangsk 0:ec079a141883 42 *
pangsk 0:ec079a141883 43 * Variables:
pangsk 0:ec079a141883 44 * rs - Used to specify data or command
pangsk 0:ec079a141883 45 * rw - Used to determine read or write
pangsk 0:ec079a141883 46 * e - enable
pangsk 0:ec079a141883 47 * d0..d3 - The data lines
pangsk 0:ec079a141883 48 */
pangsk 0:ec079a141883 49 TextLCD(PinName rs, PinName rw, PinName e, PinName d0, PinName d1,
pangsk 0:ec079a141883 50 PinName d2, PinName d3, int columns = 16, int rows = 2);
pangsk 0:ec079a141883 51
pangsk 0:ec079a141883 52 #if 0 // Inhereted from Stream, for documentation only
pangsk 0:ec079a141883 53 /* Function: putc
pangsk 0:ec079a141883 54 * Write a character
pangsk 0:ec079a141883 55 *
pangsk 0:ec079a141883 56 * Variables:
pangsk 0:ec079a141883 57 * c - The character to write to the serial port
pangsk 0:ec079a141883 58 */
pangsk 0:ec079a141883 59 int putc(int c);
pangsk 0:ec079a141883 60
pangsk 0:ec079a141883 61 /* Function: printf
pangsk 0:ec079a141883 62 * Write a formated string
pangsk 0:ec079a141883 63 *
pangsk 0:ec079a141883 64 * Variables:
pangsk 0:ec079a141883 65 * format - A printf-style format string, followed by the
pangsk 0:ec079a141883 66 * variables to use in formating the string.
pangsk 0:ec079a141883 67 */
pangsk 0:ec079a141883 68 int printf(const char* format, ...);
pangsk 0:ec079a141883 69 #endif
pangsk 0:ec079a141883 70
pangsk 0:ec079a141883 71 /* Function: locate
pangsk 0:ec079a141883 72 * Locate to a certian position
pangsk 0:ec079a141883 73 *
pangsk 0:ec079a141883 74 * Variables:
pangsk 0:ec079a141883 75 * column - the column to locate to, from 0..15
pangsk 0:ec079a141883 76 * row - the row to locate to, from 0..1
pangsk 0:ec079a141883 77 */
pangsk 0:ec079a141883 78 virtual void locate(int column, int row);
pangsk 0:ec079a141883 79
pangsk 0:ec079a141883 80 /* Function: cls
pangsk 0:ec079a141883 81 * Clear the screen, and locate to 0,0
pangsk 0:ec079a141883 82 */
pangsk 0:ec079a141883 83 virtual void cls();
pangsk 0:ec079a141883 84
pangsk 0:ec079a141883 85 virtual void reset();
pangsk 0:ec079a141883 86
pangsk 0:ec079a141883 87 protected:
pangsk 0:ec079a141883 88
pangsk 0:ec079a141883 89 void clock();
pangsk 0:ec079a141883 90 void writeData(int data);
pangsk 0:ec079a141883 91 void writeCommand(int command);
pangsk 0:ec079a141883 92 void writeByte(int value);
pangsk 0:ec079a141883 93 void writeNibble(int value);
pangsk 0:ec079a141883 94 virtual int _putc(int c);
pangsk 0:ec079a141883 95 virtual int _getc();
pangsk 0:ec079a141883 96 virtual void newline();
pangsk 0:ec079a141883 97
pangsk 0:ec079a141883 98 int _row;
pangsk 0:ec079a141883 99 int _column;
pangsk 0:ec079a141883 100 DigitalOut _rw, _rs, _e;
pangsk 0:ec079a141883 101 BusOut _d;
pangsk 0:ec079a141883 102 int _columns;
pangsk 0:ec079a141883 103 int _rows;
pangsk 0:ec079a141883 104
pangsk 0:ec079a141883 105 };
pangsk 0:ec079a141883 106
pangsk 0:ec079a141883 107 }
pangsk 0:ec079a141883 108
pangsk 0:ec079a141883 109 #endif