Andy A / WS2812Text

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

Committer:
AndyA
Date:
2014-11-06
Revision:
1:2014f027ed6f
Parent:
0:bada179a0b70

File content as of revision 1:2014f027ed6f:

#ifndef __miniFont_h__
#define __miniFont_h__

#include "mbed.h"

class miniFont
{
public:

    miniFont();
    uint8_t getPixWidth(char letter);
    uint8_t getPixHeight(char letter);
    bool getChar(char letter, const char **rowArray);
    
    bool isFixedWidth() {return fixedWidth;};
    void setFixedWidth(bool newValue) {fixedWidth = newValue;};
    
    bool isRotated() {return rotate90;};
    void setRotated(bool newValue) {rotate90 = newValue;};

private:


    uint8_t getMinPixWidth(char letter);
    bool getRawChar(char letter, const char **rowArray);
    bool getVerticalChar(char letter, const char **rowArray);

    static const uint8_t maxWidth = 5;
    static const uint8_t maxHeight = 5;

    bool rotate90;
    bool fixedWidth;
    char letterBuffer[5];
    char rotateBuffer[5];


    static const char letters[26][5];

    static const char numbers[10][5];

    static const char dot[5];
    static const char space[5];
    static const char exclam[5];
    static const char quest[5];

};


#endif