Thomas Olsson
Library for controlling LED strips or arrays based on the WS2801 3-Channel Constant Current LED Driver, like the SF 32LED/m addressable LED strip. Any two digital out capable pins can be used for clock & data. also includes a header that defines the standart HTML color names
Revision 0:b964d673c7db, committed 2011-06-14
- Comitter:
- wertyfrog
- Date:
- Tue Jun 14 19:20:50 2011 +0000
- Child:
- 1:363dd100d793
- Commit message:
- documentation test 1
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/HTML_color.h Tue Jun 14 19:20:50 2011 +0000 @@ -0,0 +1,145 @@ +#ifndef HTML_color_H +#define HTML_color_H + +#define ALICEBLUE 0xF0F8FF +#define ANTIQUEWHITE 0xFAEBD7 +#define AQUA 0x00FFFF +#define AQUAMARINE 0x7FFFD4 +#define AZURE 0xF0FFFF +#define BEIGE 0xF5F5DC +#define BISQUE 0xFFE4C4 +#define BLACK 0x000000 +#define BLANCHEDALMOND 0xFFEBCD +#define BLUE 0x0000FF +#define BLUEVIOLET 0x8A2BE2 +#define BROWN 0xA52A2A +#define BURLYWOOD 0xDEB887 +#define CADETBLUE 0x5F9EA0 +#define CHARTREUSE 0x7FFF00 +#define CHOCOLATE 0xD2691E +#define CORAL 0xFF7F50 +#define CORNFLOWERBLUE 0x6495ED +#define CORNSILK 0xFFF8DC +#define CRIMSON 0xDC143C +#define CYAN 0x00FFFF +#define DARKBLUE 0x00008B +#define DARKCYAN 0x008B8B +#define DARKGOLDENROD 0xB8860B +#define DARKGRAY 0xA9A9A9 +#define DARKGREEN 0x006400 +#define DARKKHAKI 0xBDB76B +#define DARKMAGENTA 0x8B008B +#define DARKOLIVEGREEN 0x556B2F +#define DARKORANGE 0xFF8C00 +#define DARKORCHID 0x9932CC +#define DARKRED 0x8B0000 +#define DARKSALMON 0xE9967A +#define DARKSEAGREEN 0x8FBC8F +#define DARKSLATEBLUE 0x483D8B +#define DARKSLATEGRAY 0x2F4F4F +#define DARKTURQUOISE 0x00CED1 +#define DARKVIOLET 0x9400D3 +#define DEEPPINK 0xFF1493 +#define DEEPSKYBLUE 0x00BFFF +#define DIMGRAY 0x696969 +#define DODGERBLUE 0x1E90FF +#define FIREBRICK 0xB22222 +#define FLORALWHITE 0xFFFAF0 +#define FORESTGREEN 0x228B22 +#define FUCHSIA 0xFF00FF +#define GAINSBORO 0xDCDCDC +#define GHOSTWHITE 0xF8F8FF +#define GOLD 0xFFD700 +#define GOLDENROD 0xDAA520 +#define GRAY 0xBEBEBE +#define GREEN 0x008000 +#define GREENYELLOW 0xADFF2F +#define HONEYDEW 0xF0FFF0 +#define HOTPINK 0xFF69B4 +#define INDIANRED 0xCD5C5C +#define INDIGO 0x4B0082 +#define IVORY 0xFFFFF0 +#define KHAKI 0xF0D58C +#define LAVENDER 0xE6E6FA +#define LAVENDERBLUSH 0xFFF0F5 +#define LAWNGREEN 0x7CFC00 +#define LEMONCHIFFON 0xFFFACD +#define LIGHTBLUE 0xADD8E6 +#define LIGHTCORAL 0xF08080 +#define LIGHTCYAN 0xE0FFFF +#define LIGHTGOLDENRODYELLOW 0xFAFAD2 +#define LIGHTGREEN 0x90EE90 +#define LIGHTGREY 0xD3D3D3 +#define LIGHTPINK 0xFFB6C1 +#define LIGHTSALMON 0xFFA07A +#define LIGHTSEAGREEN 0x20B2AA +#define LIGHTSKYBLUE 0x87CEFA +#define LIGHTSLATEGRAY 0x778899 +#define LIGHTSTEELBLUE 0xB0C4DE +#define LIGHTYELLOW 0xFFFFE0 +#define LIME 0x00FF00 +#define LIMEGREEN 0x32CD32 +#define LINEN 0xFAF0E6 +#define MAGENTA 0xFF00FF +#define MAROON 0x800000 +#define MEDIUMAQUAMARINE 0x66CDAA +#define MEDIUMBLUE 0x0000CD +#define MEDIUMORCHID 0xBA55D3 +#define MEDIUMPURPLE 0x9370DB +#define MEDIUMSEAGREEN 0x3CB371 +#define MEDIUMSLATEBLUE 0x7B68EE +#define MEDIUMSPRINGGREEN 0x00FA9A +#define MEDIUMTURQUOISE 0x48D1CC +#define MEDIUMVIOLETRED 0xC71585 +#define MIDNIGHTBLUE 0x191970 +#define MINTCREAM 0xF5FFFA +#define MISTYROSE 0xFFE4E1 +#define MOCCASIN 0xFFE4B5 +#define NAVAJOWHITE 0xFFDEAD +#define NAVY 0x000080 +#define OLDLACE 0xFDF5E6 +#define OLIVE 0x808000 +#define OLIVEDRAB 0x6B8E23 +#define ORANGE 0xFFA500 +#define ORANGERED 0xFF4500 +#define ORCHID 0xDA70D6 +#define PALEGOLDENROD 0xEEE8AA +#define PALEGREEN 0x98FB98 +#define PALETURQUOISE 0xAFEEEE +#define PALEVIOLET xDB7093 +#define PAPAYAWHIP 0xFFEFD5 +#define PEACHPUFF 0xFFDAB9 +#define PERU 0xCD853F +#define PINK 0xFFC0CB +#define PLUM 0xDDA0DD +#define POWDERBLUE 0xB0E0E6 +#define PURPLE 0x800080 +#define RED 0xFF0000 +#define ROSYBROWN 0xBC8F8F +#define ROYALBLUE 0x4169E1 +#define SADDLEBROWN 0x8B4513 +#define SALMON 0xFA8072 +#define SANDYBROWN 0xF4A460 +#define SEAGREEN 0x2E8B57 +#define SEASHELL 0xFFF5EE +#define SIENNA 0xA0522D +#define SILVER 0xC0C0C0 +#define SKYBLUE 0x87CEEB +#define SLATEBLUE 0x6A5ACD +#define SLATEGRAY 0x708090 +#define SNOW 0xFFFAFA +#define SPRINGGREEN 0x00FF7F +#define STEELBLUE 0x4682B4 +#define TAN 0xD2B48C +#define TEAL 0x008080 +#define THISTLE 0xD8BFD8 +#define TOMATO 0xFF6347 +#define TURQUOISE 0x40E0D0 +#define VIOLET 0xEE82EE +#define WHEAT 0xF5DEB3 +#define WHITE 0xFFFFFF +#define WHITESMOKE 0xF5F5F5 +#define YELLOW 0xFFFF00 +#define YELLOWGREEN 0x9ACD32 + +#endif \ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/ws2801.cpp Tue Jun 14 19:20:50 2011 +0000
@@ -0,0 +1,78 @@
+#include "ws2801.h"
+#include "mbed.h"
+
+
+//------------------------------------------------------------------------------------------------------------
+ws2801::ws2801(PinName CKI, PinName SDI, int STRIP_LENGTH, int reset_delay) : _CKI(CKI), _SDI(SDI), _STRIP_LENGTH(STRIP_LENGTH), _reset_delay(reset_delay)
+{
+_level=100;
+//ws2801.clear();
+for(int bits = 0; bits <= _STRIP_LENGTH*24; bits++)
+ {
+ _CKI = 0;
+ _SDI = 0;
+ _CKI = 1;
+ }
+_CKI = 0;
+wait_us(_reset_delay);
+}
+//------------------------------------------------------------------------------------------------------------
+void ws2801::post(int *strip_colors)
+{
+
+int strip_colors_leveled[_STRIP_LENGTH];
+uint32_t mask;
+
+for(int LED_number = 0 ; LED_number < _STRIP_LENGTH ; LED_number++)
+ {
+ if(_level != 100)
+ {
+ int R = ((strip_colors[LED_number] & 0x00ff0000) >> 16)*_level/100;
+ int G = ((strip_colors[LED_number] & 0x0000ff00) >> 8)*_level/100;
+ int B = (strip_colors[LED_number] & 0x000000ff)*_level/100;
+ strip_colors_leveled[LED_number] = (R << 16)|(G << 8)|B;
+ }
+ else strip_colors_leveled[LED_number] = strip_colors[LED_number];
+ int this_led_color = strip_colors_leveled[LED_number]; //24 bits of color data
+ for(char color_bit = 23 ; color_bit != 255 ; color_bit--)
+ {
+ _CKI = 0;
+ mask = 1 << color_bit;
+ if(this_led_color & mask)_SDI = 1;
+ else _SDI = 0;
+ _CKI = 1; //Data is latched when clock goes high
+ }
+ }
+_CKI = 0;
+wait_us(_reset_delay); //Wait for 1ms to go into reset
+}
+//------------------------------------------------------------------------------------------------------------
+void ws2801::clear(void)
+{
+for(int bits = 0; bits <= _STRIP_LENGTH*24; bits++)
+ {
+ _CKI = 0;
+ _SDI = 0;
+ _CKI = 1;
+ }
+_CKI = 0;
+wait_us(_reset_delay);
+}
+//------------------------------------------------------------------------------------------------------------
+int ws2801::setlevel(int level)
+{
+if((level <= 100) && level)
+ {
+ _level = level;
+ return _level;
+ }
+return 0;
+}
+
+//------------------------------------------------------------------------------------------------------------
+int ws2801::setdelay(int reset_delay)
+{
+if(reset_delay <= 0x0fffffff)_reset_delay = reset_delay;
+return _reset_delay;
+}
+//---------EOF---------------EOF------------------------------------------------------------------------------
\ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/ws2801.h Tue Jun 14 19:20:50 2011 +0000
@@ -0,0 +1,64 @@
+#ifndef WS2801_H
+#define WS2801_H
+
+#include "mbed.h"
+#include "HTML_color.h"
+
+class ws2801
+{
+public:
+ /** Create a new ws2801 object
+ *
+ * More details about the function goes here
+ * and here
+ *
+ * @param CKI clock pin
+ * @param SDI data pin
+ * @param STRIP_LENGTH number of ws2801 IC's i strip or array
+ * @param reset_delay delay in us to allow latching data
+ * @returns nothing
+ */
+ ws2801(PinName CKI, PinName SDI, int STRIP_LENGTH = 32, int reset_delay = 800);
+ /** write RGB color data to strip or array
+ *
+ * More details about the function goes here
+ * and here
+ *
+ * @param strip_colors array of color data, size must be 24xSTRIP_LENGHT bits
+ */
+ void post(int *strip_colors);
+ /** clears the array or strip (all off)
+ *
+ * More details about the function goes here
+ * and here
+ *
+ */
+ void clear(void);
+ /** dimms the entire array
+ *
+ * More details about the function goes here
+ * and here
+ *
+ * @param level level in percent
+ * @returns current level
+ */
+ int setlevel(int level=100);
+ /** set reset/write delay
+ *
+ * More details about the function goes here
+ * and here
+ *
+ * @param delay delay in us
+ * @returns delay in us
+ */
+ int setdelay(int reset_delay=800);
+
+private:
+ DigitalOut _CKI;
+ DigitalOut _SDI;
+ int _STRIP_LENGTH;
+ int _level;
+ int _reset_delay;
+};
+
+#endif
\ No newline at end of file