1 | /*
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2 | Copyright (C) 2012 Paulo Marques (pjp.marques@gmail.com)
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3 |
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4 | Permission is hereby granted, free of charge, to any person obtaining a copy of
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5 | this software and associated documentation files (the "Software"), to deal in
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6 | the Software without restriction, including without limitation the rights to
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7 | use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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8 | the Software, and to permit persons to whom the Software is furnished to do so,
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9 | subject to the following conditions:
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10 |
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11 | The above copyright notice and this permission notice shall be included in all
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12 | copies or substantial portions of the Software.
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13 |
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14 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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15 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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16 | FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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17 | COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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18 | IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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19 | CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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20 | */
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21 |
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22 | /*
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23 | * Library for controlling a chain of RGB LEDs based on the P9813 protocol.
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24 | * E.g., supports the Grove Chainable RGB LED product.
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25 | *
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26 | * Information about the P9813 protocol obtained from:
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27 | * http://www.seeedstudio.com/wiki/index.php?title=Twig_-_Chainable_RGB_LED
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28 | */
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29 |
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30 |
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31 |
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32 | #ifndef __ChainableLED_h__
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33 | #define __ChainableLED_h__
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34 |
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35 | #if defined (SPARK)
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36 | #include "application.h"
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37 | #else
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38 | #include "Arduino.h"
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39 | #endif
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40 |
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41 | #define _CL_RED 0
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42 | #define _CL_GREEN 1
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43 | #define _CL_BLUE 2
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44 | #define _CLK_PULSE_DELAY 20
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45 |
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46 | class ChainableLED
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47 | {
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48 | public:
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49 | ChainableLED(byte clk_pin, byte data_pin, byte number_of_leds);
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50 | ~ChainableLED();
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51 |
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52 | void init();
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53 | void setColorRGB(byte led, byte red, byte green, byte blue);
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54 | void setColorHSB(byte led, float hue, float saturation, float brightness);
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55 |
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56 | private:
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57 | byte _clk_pin;
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58 | byte _data_pin;
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59 | byte _num_leds;
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60 |
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61 | byte* _led_state;
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62 |
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63 | void clk(void);
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64 | void sendByte(byte b);
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65 | void sendColor(byte red, byte green, byte blue);
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66 | };
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67 |
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68 | #endif
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69 |
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