Library for the WS2812 LED Driver. Uses bit banging and nops for precise timing. Number of nops executed are configurable at run time.
WS2812.h
- Committer:
- bridadan
- Date:
- 2015-02-12
- Revision:
- 0:0b79cafcb387
- Child:
- 1:aadbf08c62a2
File content as of revision 0:0b79cafcb387:
/* Copyright (c) 2012 cstyles, MIT License * * 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. */ #ifndef WS2812_H #define WS2812_H #include "mbed.h" #define WS1 0x38 #define WS0 0x30 #define SPICLK 5000000 #define FRAME_SIZE 24 //!Library for the WS2812 RGB LED with integrated controller /*! The WS2812 is controller that is built into a range of LEDs */ class WS2812 { public: //!Creates an instance of the class. /*! Connect WS2812 address addr using digital pins */ WS2812(PinName d, int size); /*! Destroys instance. */ ~WS2812(); void setDelays(int zeroHigh, int zeroLow, int oneHigh, int oneLow); void write(int buf[]); void write_offsets(int buf[],int r_offset=0, int g_offset=0, int b_offset=0); void useII(int d); void setII(unsigned char II); private: int __size; int __zeroHigh, __zeroLow, __oneHigh, __oneLow; unsigned char __II; int __use_II; bool *__transmitBuf; void __loadBuf(int buf[],int r_offset=0, int g_offset=0, int b_offset=0); PinName __outPin; DigitalOut __gpo; }; #endif