Improved version of Simon Ford's TextDisplay library, with addressing and timing fixes. Supports up to 20x4 text displays.
TextDisplay.h
- Committer:
- bikeNomad
- Date:
- 2010-02-14
- Revision:
- 0:2c5bba968d7c
File content as of revision 0:2c5bba968d7c:
/* mbed TextDisplay Library Base Class * Copyright (c) 2007-2009 sford * Released under the MIT License: http://mbed.org/license/mit * * A common base class for Text displays * To port a new display, derive from this class and implement * the constructor (setup the display), character (put a character * at a location), rows and columns (number of rows/cols) functions. * Everything else (locate, printf, putc, cls) will come for free * * The model is the display will wrap at the right and bottom, so you can * keep writing and will always get valid characters. The location is * maintained internally to the class to make this easy */ #ifndef MBED_TEXTDISPLAY_H #define MBED_TEXTDISPLAY_H #include "mbed.h" class TextDisplay : public Stream { public: // functions needing implementation in derived implementation class TextDisplay(); virtual void character(uint16_t column, uint16_t row, int c) = 0; virtual uint16_t rows() = 0; virtual uint16_t columns() = 0; // functions that come for free, but can be overwritten virtual void cls(); virtual void locate(uint16_t column, uint16_t row); virtual void foreground(uint32_t colour); virtual void background(uint32_t colour); // putc (from Stream) // printf (from Stream) protected: virtual int _putc(int value); virtual int _getc(); // character location uint16_t _column; uint16_t _row; // colours uint32_t _foreground; uint32_t _background; }; #endif