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.
Diff: miniFont/miniFont.h
- Revision:
- 0:bada179a0b70
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/miniFont/miniFont.h Thu Nov 06 13:55:51 2014 +0000
@@ -0,0 +1,49 @@
+#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