Chris Styles
This example uses the OLED display and the joystick on the Embedded Artists bseboard
TextDisplay.h@0:6a7d6162034d, 2010-03-02 (annotated)
- Committer:
- chris
- Date:
- Tue Mar 02 07:23:59 2010 +0000
- Revision:
- 0:6a7d6162034d
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| chris | 0:6a7d6162034d | 1 | /* mbed TextDisplay Library Base Class |
| chris | 0:6a7d6162034d | 2 | * Copyright (c) 2007-2009 sford |
| chris | 0:6a7d6162034d | 3 | * Released under the MIT License: http://mbed.org/license/mit |
| chris | 0:6a7d6162034d | 4 | * |
| chris | 0:6a7d6162034d | 5 | * A common base class for Text displays |
| chris | 0:6a7d6162034d | 6 | * To port a new display, derive from this class and implement |
| chris | 0:6a7d6162034d | 7 | * the constructor (setup the display), character (put a character |
| chris | 0:6a7d6162034d | 8 | * at a location), rows and columns (number of rows/cols) functions. |
| chris | 0:6a7d6162034d | 9 | * Everything else (locate, printf, putc, cls) will come for free |
| chris | 0:6a7d6162034d | 10 | * |
| chris | 0:6a7d6162034d | 11 | * The model is the display will wrap at the right and bottom, so you can |
| chris | 0:6a7d6162034d | 12 | * keep writing and will always get valid characters. The location is |
| chris | 0:6a7d6162034d | 13 | * maintained internally to the class to make this easy |
| chris | 0:6a7d6162034d | 14 | */ |
| chris | 0:6a7d6162034d | 15 | |
| chris | 0:6a7d6162034d | 16 | #ifndef MBED_TEXTDISPLAY_H |
| chris | 0:6a7d6162034d | 17 | #define MBED_TEXTDISPLAY_H |
| chris | 0:6a7d6162034d | 18 | |
| chris | 0:6a7d6162034d | 19 | #include "mbed.h" |
| chris | 0:6a7d6162034d | 20 | |
| chris | 0:6a7d6162034d | 21 | class TextDisplay : public Stream { |
| chris | 0:6a7d6162034d | 22 | public: |
| chris | 0:6a7d6162034d | 23 | |
| chris | 0:6a7d6162034d | 24 | // functions needing implementation in derived implementation class |
| chris | 0:6a7d6162034d | 25 | TextDisplay(); |
| chris | 0:6a7d6162034d | 26 | virtual void character(int column, int row, int c) = 0; |
| chris | 0:6a7d6162034d | 27 | virtual int rows() = 0; |
| chris | 0:6a7d6162034d | 28 | virtual int columns() = 0; |
| chris | 0:6a7d6162034d | 29 | |
| chris | 0:6a7d6162034d | 30 | // functions that come for free, but can be overwritten |
| chris | 0:6a7d6162034d | 31 | virtual void cls(); |
| chris | 0:6a7d6162034d | 32 | virtual void locate(int column, int row); |
| chris | 0:6a7d6162034d | 33 | virtual void foreground(int colour); |
| chris | 0:6a7d6162034d | 34 | virtual void background(int colour); |
| chris | 0:6a7d6162034d | 35 | // putc (from Stream) |
| chris | 0:6a7d6162034d | 36 | // printf (from Stream) |
| chris | 0:6a7d6162034d | 37 | |
| chris | 0:6a7d6162034d | 38 | protected: |
| chris | 0:6a7d6162034d | 39 | |
| chris | 0:6a7d6162034d | 40 | virtual int _putc(int value); |
| chris | 0:6a7d6162034d | 41 | virtual int _getc(); |
| chris | 0:6a7d6162034d | 42 | |
| chris | 0:6a7d6162034d | 43 | // character location |
| chris | 0:6a7d6162034d | 44 | short _column; |
| chris | 0:6a7d6162034d | 45 | short _row; |
| chris | 0:6a7d6162034d | 46 | |
| chris | 0:6a7d6162034d | 47 | // colours |
| chris | 0:6a7d6162034d | 48 | int _foreground; |
| chris | 0:6a7d6162034d | 49 | int _background; |
| chris | 0:6a7d6162034d | 50 | }; |
| chris | 0:6a7d6162034d | 51 | |
| chris | 0:6a7d6162034d | 52 | #endif |