- ANALOG METER, initial offering - Emulation of an analog/mechanical meter using the SPI TFT display \"http://mbed.org/cookbook/SPI-driven-QVGA-TFT\" (touch not used) Meter takes an integer number from 0 - 100 and uses that number to position the meter\'s needle - An additional auto-scaling feature allows for + floating numbers from 0.0 - 10000.0 in \"NewfNumb\" Scaling is noted two ways a. Color of the meter body changes b. A text scale factor is displayed in the upper, right-hand corner, near the full scale reading Value of \"NewfNumb\" Meter_Body Scale_Factor < -0.0 Blue 0 0.1 - 9.9 Green x1 10.0 - 99.0 Yellow x10 100.0 - 999.0 Orange x100 1000.0 - 9990.0 Red x1k >= 10000.0 Red peg! - If NewfNumb is > 600.0, a flashing yellow warning message appears in the center of the meter movement - The date and time are displayed in the lower right corner of the display - The value of NewfNumb being shown in the movement is also displayed in the lower left coener of the display - A timer ISR automatically updates the meter\'s movement Other Stuff: - Additional demo test program, walks analog meter up and down through all auto scales by manipulating the value of NewfNumb - USB serial port used to dump a few messages. Not needed, set to 921600 BAUD - LED1 slowly gets brighter and dimmer as main loop runs - If for some reason, the \"MeterNumber\" int register ends up >100 or <0, a Purple display appears at 50% movement with a \"bad#\" scale factor - There is NO provision for setting the RTC. Note that TimeZone and DST are added to the RTC number
SPI_TFT/TextDisplay.h@0:fc70640071d2, 2012-01-31 (annotated)
- Committer:
- loopsva
- Date:
- Tue Jan 31 19:40:57 2012 +0000
- Revision:
- 0:fc70640071d2
100
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
loopsva | 0:fc70640071d2 | 1 | /* mbed TextDisplay Library Base Class |
loopsva | 0:fc70640071d2 | 2 | * Copyright (c) 2007-2009 sford |
loopsva | 0:fc70640071d2 | 3 | * Released under the MIT License: http://mbed.org/license/mit |
loopsva | 0:fc70640071d2 | 4 | * |
loopsva | 0:fc70640071d2 | 5 | * A common base class for Text displays |
loopsva | 0:fc70640071d2 | 6 | * To port a new display, derive from this class and implement |
loopsva | 0:fc70640071d2 | 7 | * the constructor (setup the display), character (put a character |
loopsva | 0:fc70640071d2 | 8 | * at a location), rows and columns (number of rows/cols) functions. |
loopsva | 0:fc70640071d2 | 9 | * Everything else (locate, printf, putc, cls) will come for free |
loopsva | 0:fc70640071d2 | 10 | * |
loopsva | 0:fc70640071d2 | 11 | * The model is the display will wrap at the right and bottom, so you can |
loopsva | 0:fc70640071d2 | 12 | * keep writing and will always get valid characters. The location is |
loopsva | 0:fc70640071d2 | 13 | * maintained internally to the class to make this easy |
loopsva | 0:fc70640071d2 | 14 | */ |
loopsva | 0:fc70640071d2 | 15 | |
loopsva | 0:fc70640071d2 | 16 | #ifndef MBED_TEXTDISPLAY_H |
loopsva | 0:fc70640071d2 | 17 | #define MBED_TEXTDISPLAY_H |
loopsva | 0:fc70640071d2 | 18 | |
loopsva | 0:fc70640071d2 | 19 | #include "mbed.h" |
loopsva | 0:fc70640071d2 | 20 | |
loopsva | 0:fc70640071d2 | 21 | class TextDisplay : public Stream { |
loopsva | 0:fc70640071d2 | 22 | public: |
loopsva | 0:fc70640071d2 | 23 | |
loopsva | 0:fc70640071d2 | 24 | // functions needing implementation in derived implementation class |
loopsva | 0:fc70640071d2 | 25 | /** Create a TextDisplay interface |
loopsva | 0:fc70640071d2 | 26 | * |
loopsva | 0:fc70640071d2 | 27 | * @param name The name used in the path to access the strean through the filesystem |
loopsva | 0:fc70640071d2 | 28 | */ |
loopsva | 0:fc70640071d2 | 29 | TextDisplay(const char *name = NULL); |
loopsva | 0:fc70640071d2 | 30 | |
loopsva | 0:fc70640071d2 | 31 | /** output a character at the given position |
loopsva | 0:fc70640071d2 | 32 | * |
loopsva | 0:fc70640071d2 | 33 | * @param column column where charater must be written |
loopsva | 0:fc70640071d2 | 34 | * @param row where character must be written |
loopsva | 0:fc70640071d2 | 35 | * @param c the character to be written to the TextDisplay |
loopsva | 0:fc70640071d2 | 36 | */ |
loopsva | 0:fc70640071d2 | 37 | virtual void character(int column, int row, int c) = 0; |
loopsva | 0:fc70640071d2 | 38 | |
loopsva | 0:fc70640071d2 | 39 | /** return number if rows on TextDisplay |
loopsva | 0:fc70640071d2 | 40 | * @result number of rows |
loopsva | 0:fc70640071d2 | 41 | */ |
loopsva | 0:fc70640071d2 | 42 | virtual int rows() = 0; |
loopsva | 0:fc70640071d2 | 43 | |
loopsva | 0:fc70640071d2 | 44 | /** return number if columns on TextDisplay |
loopsva | 0:fc70640071d2 | 45 | * @result number of rows |
loopsva | 0:fc70640071d2 | 46 | */ |
loopsva | 0:fc70640071d2 | 47 | virtual int columns() = 0; |
loopsva | 0:fc70640071d2 | 48 | |
loopsva | 0:fc70640071d2 | 49 | // functions that come for free, but can be overwritten |
loopsva | 0:fc70640071d2 | 50 | |
loopsva | 0:fc70640071d2 | 51 | /** redirect output from a stream (stoud, sterr) to display |
loopsva | 0:fc70640071d2 | 52 | * @param stream stream that shall be redirected to the TextDisplay |
loopsva | 0:fc70640071d2 | 53 | */ |
loopsva | 0:fc70640071d2 | 54 | virtual bool claim (FILE *stream); |
loopsva | 0:fc70640071d2 | 55 | |
loopsva | 0:fc70640071d2 | 56 | /** clear screen |
loopsva | 0:fc70640071d2 | 57 | */ |
loopsva | 0:fc70640071d2 | 58 | virtual void cls(); |
loopsva | 0:fc70640071d2 | 59 | virtual void locate(int column, int row); |
loopsva | 0:fc70640071d2 | 60 | virtual void foreground(uint16_t colour); |
loopsva | 0:fc70640071d2 | 61 | virtual void background(uint16_t colour); |
loopsva | 0:fc70640071d2 | 62 | // putc (from Stream) |
loopsva | 0:fc70640071d2 | 63 | // printf (from Stream) |
loopsva | 0:fc70640071d2 | 64 | |
loopsva | 0:fc70640071d2 | 65 | protected: |
loopsva | 0:fc70640071d2 | 66 | |
loopsva | 0:fc70640071d2 | 67 | virtual int _putc(int value); |
loopsva | 0:fc70640071d2 | 68 | virtual int _getc(); |
loopsva | 0:fc70640071d2 | 69 | |
loopsva | 0:fc70640071d2 | 70 | // character location |
loopsva | 0:fc70640071d2 | 71 | uint16_t _column; |
loopsva | 0:fc70640071d2 | 72 | uint16_t _row; |
loopsva | 0:fc70640071d2 | 73 | |
loopsva | 0:fc70640071d2 | 74 | // colours |
loopsva | 0:fc70640071d2 | 75 | uint16_t _foreground; |
loopsva | 0:fc70640071d2 | 76 | uint16_t _background; |
loopsva | 0:fc70640071d2 | 77 | char *_path; |
loopsva | 0:fc70640071d2 | 78 | }; |
loopsva | 0:fc70640071d2 | 79 | |
loopsva | 0:fc70640071d2 | 80 | #endif |