Andy A
Displays text on a WS2812 (NeoPixel) matrix display
Dependencies: mbed miniFont wsDrive
Displays text on an array of WS2812 LEDs (NeoPixels)
Text is 5 rows tall so any grid larger than that can be used. The font supports A-Z (capitals only, any lowercase input will be capitalised) numbers and some basic punctuation. Letters are 5 LEDs wide, some numbers and punctuation are smaller but generally you need 6 pixels wide per character you wish to fit. If displaying a string a 1 row space is left between characters, for other spacings either edit the code or print one letter at a time and adjust the offset for the next letter.
LEDs must be connected in horizontal rows, top row first. Rows can be either direction or alternating directions.
NOTE: The testing on this has been fairly minimal. It works with my one physical configuration, I think the logic for other configurations is correct but haven't tested it. If you find a problem please let me know.
miniFont/miniFont.h@1:2014f027ed6f, 2014-11-06 (annotated)
- Committer:
- AndyA
- Date:
- Thu Nov 06 17:32:12 2014 +0000
- Revision:
- 1:2014f027ed6f
- Parent:
- 0:bada179a0b70
Tidied up a bit.; Added option to reverse direction of the top row. ; Added the initGradient function
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| AndyA | 0:bada179a0b70 | 1 | #ifndef __miniFont_h__ |
| AndyA | 0:bada179a0b70 | 2 | #define __miniFont_h__ |
| AndyA | 0:bada179a0b70 | 3 | |
| AndyA | 0:bada179a0b70 | 4 | #include "mbed.h" |
| AndyA | 0:bada179a0b70 | 5 | |
| AndyA | 0:bada179a0b70 | 6 | class miniFont |
| AndyA | 0:bada179a0b70 | 7 | { |
| AndyA | 0:bada179a0b70 | 8 | public: |
| AndyA | 0:bada179a0b70 | 9 | |
| AndyA | 0:bada179a0b70 | 10 | miniFont(); |
| AndyA | 0:bada179a0b70 | 11 | uint8_t getPixWidth(char letter); |
| AndyA | 0:bada179a0b70 | 12 | uint8_t getPixHeight(char letter); |
| AndyA | 0:bada179a0b70 | 13 | bool getChar(char letter, const char **rowArray); |
| AndyA | 0:bada179a0b70 | 14 | |
| AndyA | 0:bada179a0b70 | 15 | bool isFixedWidth() {return fixedWidth;}; |
| AndyA | 0:bada179a0b70 | 16 | void setFixedWidth(bool newValue) {fixedWidth = newValue;}; |
| AndyA | 0:bada179a0b70 | 17 | |
| AndyA | 0:bada179a0b70 | 18 | bool isRotated() {return rotate90;}; |
| AndyA | 0:bada179a0b70 | 19 | void setRotated(bool newValue) {rotate90 = newValue;}; |
| AndyA | 0:bada179a0b70 | 20 | |
| AndyA | 0:bada179a0b70 | 21 | private: |
| AndyA | 0:bada179a0b70 | 22 | |
| AndyA | 0:bada179a0b70 | 23 | |
| AndyA | 0:bada179a0b70 | 24 | uint8_t getMinPixWidth(char letter); |
| AndyA | 0:bada179a0b70 | 25 | bool getRawChar(char letter, const char **rowArray); |
| AndyA | 0:bada179a0b70 | 26 | bool getVerticalChar(char letter, const char **rowArray); |
| AndyA | 0:bada179a0b70 | 27 | |
| AndyA | 0:bada179a0b70 | 28 | static const uint8_t maxWidth = 5; |
| AndyA | 0:bada179a0b70 | 29 | static const uint8_t maxHeight = 5; |
| AndyA | 0:bada179a0b70 | 30 | |
| AndyA | 0:bada179a0b70 | 31 | bool rotate90; |
| AndyA | 0:bada179a0b70 | 32 | bool fixedWidth; |
| AndyA | 0:bada179a0b70 | 33 | char letterBuffer[5]; |
| AndyA | 0:bada179a0b70 | 34 | char rotateBuffer[5]; |
| AndyA | 0:bada179a0b70 | 35 | |
| AndyA | 0:bada179a0b70 | 36 | |
| AndyA | 0:bada179a0b70 | 37 | static const char letters[26][5]; |
| AndyA | 0:bada179a0b70 | 38 | |
| AndyA | 0:bada179a0b70 | 39 | static const char numbers[10][5]; |
| AndyA | 0:bada179a0b70 | 40 | |
| AndyA | 0:bada179a0b70 | 41 | static const char dot[5]; |
| AndyA | 0:bada179a0b70 | 42 | static const char space[5]; |
| AndyA | 0:bada179a0b70 | 43 | static const char exclam[5]; |
| AndyA | 0:bada179a0b70 | 44 | static const char quest[5]; |
| AndyA | 0:bada179a0b70 | 45 | |
| AndyA | 0:bada179a0b70 | 46 | }; |
| AndyA | 0:bada179a0b70 | 47 | |
| AndyA | 0:bada179a0b70 | 48 | |
| AndyA | 0:bada179a0b70 | 49 | #endif |