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90 lines
2.9 KiB
C++
90 lines
2.9 KiB
C++
/* WS2812Serial - Non-blocking WS2812 LED Display Library
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https://github.com/PaulStoffregen/WS2812Serial
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Copyright (c) 2017 Paul Stoffregen, PJRC.COM, LLC
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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*/
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#ifndef WS2812Serial_h_
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#define WS2812Serial_h_
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#include <Arduino.h>
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#include "DMAChannel.h"
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#define WS2812_RGB 0 // The WS2811 datasheet documents this way
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#define WS2812_RBG 1
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#define WS2812_GRB 2 // Most LED strips are wired this way
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#define WS2812_GBR 3
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#define WS2812_BRG 4
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#define WS2812_BGR 5
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class WS2812Serial {
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public:
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constexpr WS2812Serial(uint16_t num, void *fb, void *db, uint8_t pin, uint8_t cfg) :
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numled(num), pin(pin), config(cfg),
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frameBuffer((uint8_t *)fb), drawBuffer((uint8_t *)db) {
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}
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bool begin();
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void setPixel(uint32_t num, int color) {
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if (num >= numled) return;
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num *= 3;
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drawBuffer[num+0] = color & 255;
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drawBuffer[num+1] = (color >> 8) & 255;
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drawBuffer[num+2] = (color >> 16) & 255;
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}
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void setPixel(uint32_t num, uint8_t red, uint8_t green, uint8_t blue) {
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if (num >= numled) return;
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num *= 3;
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drawBuffer[num+0] = blue;
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drawBuffer[num+1] = green;
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drawBuffer[num+2] = red;
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}
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void clear() {
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memset(drawBuffer, 0, numled * 3);
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}
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void show();
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void busy();
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uint16_t numPixels() {
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return numled;
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}
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// Functions for compatibility with Adafruit_NeoPixel
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void setPixelColor(uint16_t num, uint32_t color) {
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setPixel(num, color);
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}
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void setPixelColor(uint16_t num, uint8_t red, uint8_t green, uint8_t blue) {
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setPixel(num, red, green, blue);
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}
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uint32_t Color(uint8_t red, uint8_t green, uint8_t blue) {
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return (red << 16) | (green << 8) | blue;
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}
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private:
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const uint16_t numled;
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const uint8_t pin;
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const uint8_t config;
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uint8_t *frameBuffer;
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uint8_t *drawBuffer;
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DMAChannel *dma = nullptr;
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uint32_t prior_micros = 0;
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#if defined(__IMXRT1062__) // Teensy 3.x
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IMXRT_LPUART_t *uart = nullptr;
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#endif
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};
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#endif
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