Diff: ChainableLED.h

Revision:

0:24631ceaa38a

Child:

1:50d0a66599e1

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ChainableLED.h	Fri Aug 02 08:05:28 2013 +0000
@@ -0,0 +1,64 @@
+/*
+Copyright (C) 2013 Seeed Technology Inc.
+Copyright (C) 2012 Paulo Marques (pjp.marques@gmail.com)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of 
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all 
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*/
+
+/* 
+ * Library for controlling a chain of RGB LEDs based on the P9813 protocol.
+ * E.g., supports the Grove Chainable RGB LED product.
+ *
+ * Information about the P9813 protocol obtained from:
+ * http://www.seeedstudio.com/wiki/index.php?title=Twig_-_Chainable_RGB_LED
+ */
+
+
+
+#ifndef __ChainableLED_h__
+#define __ChainableLED_h__
+
+#include "mbed.h"
+
+#define _CL_RED             0
+#define _CL_GREEN           1
+#define _CL_BLUE            2
+#define _CLK_PULSE_DELAY    20
+
+class ChainableLED
+{
+public:
+    ChainableLED(PinName clk_pin, PinName data_pin, unsigned int number_of_leds);
+    ~ChainableLED();
+    
+    void setColorRGB(unsigned int led, uint8_t red, uint8_t green, uint8_t blue);
+    void setColorHSB(unsigned int led, float hue, float saturation, float brightness);
+
+private:
+    DigitalOut _clk_pin;
+    DigitalOut _data_pin;
+    unsigned int _num_leds; 
+
+    uint8_t _led_state[3];
+    
+    void clk(void);
+    void sendByte(uint8_t b);
+    void sendColor(uint8_t red, uint8_t green, uint8_t blue);
+};
+
+#endif