- 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/GraphicsDisplay.h
- Committer:
- loopsva
- Date:
- 2012-01-31
- Revision:
- 0:fc70640071d2
File content as of revision 0:fc70640071d2:
/* mbed GraphicsDisplay Display Library Base Class * Copyright (c) 2007-2009 sford * Released under the MIT License: http://mbed.org/license/mit * * A library for providing a common base class for Graphics displays * To port a new display, derive from this class and implement * the constructor (setup the display), pixel (put a pixel * at a location), width and height functions. Everything else * (locate, printf, putc, cls, window, putp, fill, blit, blitbit) * will come for free. You can also provide a specialised implementation * of window and putp to speed up the results */ #ifndef MBED_GRAPHICSDISPLAY_H #define MBED_GRAPHICSDISPLAY_H #include "TextDisplay.h" class GraphicsDisplay : public TextDisplay { public: GraphicsDisplay(const char* name); virtual void pixel(int x, int y, int colour) = 0; virtual int width() = 0; virtual int height() = 0; virtual void window(int x, int y, int w, int h); virtual void putp(int colour); virtual void cls(); virtual void fill(int x, int y, int w, int h, int colour); virtual void blit(int x, int y, int w, int h, const int *colour); virtual void blitbit(int x, int y, int w, int h, const char* colour); virtual void character(int column, int row, int value); virtual int columns(); virtual int rows(); protected: // pixel location short _x; short _y; // window location short _x1; short _x2; short _y1; short _y2; }; #endif