![](/media/cache/group/default_image.jpg.50x50_q85.jpg)
This is a very simple guide, reviewing the steps required to get Blinky working on an Mbed OS platform.
Dependencies: mbed Adafruit_GFX
WS2812.h
- Committer:
- ParkChunMyong
- Date:
- 2019-06-13
- Revision:
- 96:7465ab270e7a
- Parent:
- 95:250afd53b710
File content as of revision 96:7465ab270e7a:
/* 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 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: enum BrightnessControl { OFF, GLOBAL, PER_PIXEL }; /** * Constructor * * @param pin Output pin. Connect to "Din" on the first WS2812 in the strip * @param size Number of LEDs in your strip * @param zeroHigh How many NOPs to insert to ensure TOH is properly generated. See library description for more information. * @param zeroLow How many NOPs to insert to ensure TOL is properly generated. See library description for more information. * @param oneHigh How many NOPs to insert to ensure T1H is properly generated. See library description for more information. * @param oneLow How many NOPs to insert to ensure T1L is properly generated. See library description for more information. * */ WS2812(PinName pin, int size, int zeroHigh, int zeroLow, int oneHigh, int oneLow); /*! Destroys instance. */ ~WS2812(); /** * Sets the timing parameters for the bit-banged signal * * @param zeroHigh How many NOPs to insert to ensure TOH is properly generated. See library description for more information. * @param zeroLow How many NOPs to insert to ensure TOL is properly generated. See library description for more information. * @param oneHigh How many NOPs to insert to ensure T1H is properly generated. See library description for more information. * @param oneLow How many NOPs to insert to ensure T1L is properly generated. See library description for more information. * */ void setDelays(int zeroHigh, int zeroLow, int oneHigh, int oneLow); /** * Writes the given buffer to the LED strip with the given offsets. * NOTE: This function is timing critical, therefore interrupts are disabled during the transmission section. * * @param buf Pointer to the PixelArray buffer * @param r_offset The offset where each each pixel pulls its red component. Wraps to beginning if end is reached. * @param g_offset The offset where each each pixel pulls its green component. Wraps to beginning if end is reached. * @param b_offset The offset where each each pixel pulls its blue component. Wraps to beginning if end is reached. * */ void write_offsets(int buf[], int r_offset = 0, int g_offset = 0, int b_offset = 0); /** * Writes the given buffer to the LED strip * NOTE: This function is timing critical, therefore interrupts are disabled during the transmission section. * * @param buf Pointer to the PixelArray buffer * */ void write(int buf[]); /** * Sets the brightness mode * * @param bc The brightness control. Defaults to OFF. Possible values include OFF, GLOBAL, and PER_PIXEL * */ void useII(BrightnessControl bc); /** * Sets the global brightness level. * * @param II The brightness level. Possible values include 0 - 255 (0x00 - 0xFF). * */ void setII(unsigned char II); private: int __size; int __zeroHigh, __zeroLow, __oneHigh, __oneLow; unsigned char __II; BrightnessControl __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