Lib for the new LCD Display with ILI9341 controller Modified for huge fonts (>255 bytes/char). Needs modified font.h files with 2-byte size parameter. Window size is set on a per-character basis to minimise the number of pixels written (speed-up, plus better detection of whether one last character will fit on the current line). NUCLEO & NXP DMA-enabled versions are modified but untested.
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TextDisplay.h
- Committer:
- gregeric
- Date:
- 2014-12-08
- Revision:
- 17:8794e2eadd8d
- Parent:
- 0:da1bf437cbc1
File content as of revision 17:8794e2eadd8d:
/* 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 /** Create a TextDisplay interface * * @param name The name used in the path to access the strean through the filesystem */ TextDisplay(const char *name = NULL); /** output a character at the given position * * @param column column where charater must be written * @param row where character must be written * @param c the character to be written to the TextDisplay */ virtual void character(int column, int row, int c) = 0; /** return number if rows on TextDisplay * @result number of rows */ virtual int rows() = 0; /** return number if columns on TextDisplay * @result number of rows */ virtual int columns() = 0; // functions that come for free, but can be overwritten /** redirect output from a stream (stoud, sterr) to display * @param stream stream that shall be redirected to the TextDisplay */ virtual bool claim (FILE *stream); /** clear screen */ virtual void cls(); virtual void locate(int column, int row); virtual void foreground(uint16_t colour); virtual void background(uint16_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 uint16_t _foreground; uint16_t _background; char *_path; }; #endif