304 lines
7.5 KiB
C++
304 lines
7.5 KiB
C++
#include <WS2812B.h>
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#define NUM_LEDS 30
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/*
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* Note. Library uses SPI1
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* Connect the WS2812B data input to MOSI on your board.
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*
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*/
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WS2812B strip = WS2812B(NUM_LEDS);
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// Note. Gamma is not really supported in the library, its only included as some functions used in this example require Gamma
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uint8_t LEDGamma[] = {
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1,
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1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2,
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2, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 5, 5, 5,
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5, 6, 6, 6, 6, 7, 7, 7, 7, 8, 8, 8, 9, 9, 9, 10,
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10, 10, 11, 11, 11, 12, 12, 13, 13, 13, 14, 14, 15, 15, 16, 16,
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17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 22, 22, 23, 24, 24, 25,
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25, 26, 27, 27, 28, 29, 29, 30, 31, 32, 32, 33, 34, 35, 35, 36,
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37, 38, 39, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 50,
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51, 52, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 66, 67, 68,
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69, 70, 72, 73, 74, 75, 77, 78, 79, 81, 82, 83, 85, 86, 87, 89,
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90, 92, 93, 95, 96, 98, 99,101,102,104,105,107,109,110,112,114,
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115,117,119,120,122,124,126,127,129,131,133,135,137,138,140,142,
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144,146,148,150,152,154,156,158,160,162,164,167,169,171,173,175,
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177,180,182,184,186,189,191,193,196,198,200,203,205,208,210,213,
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215,218,220,223,225,228,231,233,236,239,241,244,247,249,252,255 };
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void setup()
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{
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strip.begin();// Sets up the SPI
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strip.show();// Clears the strip, as by default the strip data is set to all LED's off.
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// strip.setBrightness(8);
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}
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void loop()
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{
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colorWipe(strip.Color(0, 255, 0), 20); // Green
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colorWipe(strip.Color(255, 0, 0), 20); // Red
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colorWipe(strip.Color(0, 0, 255), 20); // Blue
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rainbow(10);
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rainbowCycle(10);
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theaterChase(strip.Color(255, 0, 0), 20); // Red
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theaterChase(strip.Color(0, 255, 0), 20); // Green
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theaterChase(strip.Color(0, 0, 255), 20); // Blue
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theaterChaseRainbow(10);
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whiteOverRainbow(20,75,5);
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pulseWhite(5);
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delay(250);
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fullWhite();
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delay(250);
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rainbowFade2White(3,3,1);
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}
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// Fill the dots one after the other with a color
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void colorWipe(uint32_t c, uint8_t wait)
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{
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for(uint16_t i=0; i<strip.numPixels(); i++)
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{
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strip.setPixelColor(i, c);
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strip.show();
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delay(wait);
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}
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}
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void rainbow(uint8_t wait) {
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uint16_t i, j;
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for(j=0; j<256; j++) {
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for(i=0; i<strip.numPixels(); i++)
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{
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strip.setPixelColor(i, Wheel((i+j) & 255));
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}
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strip.show();
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delay(wait);
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}
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}
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// Slightly different, this makes the rainbow equally distributed throughout
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void rainbowCycle(uint8_t wait)
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{
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uint16_t i, j;
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for(j=0; j<256*5; j++)
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{ // 5 cycles of all colors on wheel
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for(i=0; i< strip.numPixels(); i++)
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{
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strip.setPixelColor(i, Wheel(((i * 256 / strip.numPixels()) + j) & 255));
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}
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strip.show();
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delay(wait);
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}
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}
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// Input a value 0 to 255 to get a color value.
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// The colours are a transition r - g - b - back to r.
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uint32_t Wheel(byte WheelPos)
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{
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if(WheelPos < 85)
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{
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return strip.Color(WheelPos * 3, 255 - WheelPos * 3, 0);
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}
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else
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{
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if(WheelPos < 170)
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{
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WheelPos -= 85;
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return strip.Color(255 - WheelPos * 3, 0, WheelPos * 3);
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}
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else
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{
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WheelPos -= 170;
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return strip.Color(0, WheelPos * 3, 255 - WheelPos * 3);
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}
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}
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}
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//Theatre-style crawling lights.
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void theaterChase(uint32_t c, uint8_t wait) {
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for (int j=0; j<10; j++) { //do 10 cycles of chasing
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for (int q=0; q < 3; q++) {
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for (uint16_t i=0; i < strip.numPixels(); i=i+3) {
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strip.setPixelColor(i+q, c); //turn every third pixel on
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}
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strip.show();
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delay(wait);
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for (uint16_t i=0; i < strip.numPixels(); i=i+3) {
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strip.setPixelColor(i+q, 0); //turn every third pixel off
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}
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}
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}
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}
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//Theatre-style crawling lights with rainbow effect
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void theaterChaseRainbow(uint8_t wait) {
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for (int j=0; j < 256; j++) { // cycle all 256 colors in the wheel
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for (int q=0; q < 3; q++) {
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for (uint16_t i=0; i < strip.numPixels(); i=i+3) {
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strip.setPixelColor(i+q, Wheel( (i+j) % 255)); //turn every third pixel on
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}
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strip.show();
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delay(wait);
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for (uint16_t i=0; i < strip.numPixels(); i=i+3) {
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strip.setPixelColor(i+q, 0); //turn every third pixel off
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}
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}
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}
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}
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void pulseWhite(uint8_t wait) {
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for(int j = 0; j < 256 ; j++){
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for(uint16_t i=0; i<strip.numPixels(); i++) {
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strip.setPixelColor(i, strip.Color(0,0,0, LEDGamma[j] ) );
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}
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delay(wait);
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strip.show();
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}
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for(int j = 255; j >= 0 ; j--){
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for(uint16_t i=0; i<strip.numPixels(); i++) {
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strip.setPixelColor(i, strip.Color(0,0,0, LEDGamma[j] ) );
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}
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delay(wait);
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strip.show();
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}
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}
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void rainbowFade2White(uint8_t wait, int rainbowLoops, int whiteLoops) {
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float fadeMax = 100.0;
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int fadeVal = 0;
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uint32_t wheelVal;
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int redVal, greenVal, blueVal;
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for(int k = 0 ; k < rainbowLoops ; k ++){
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for(int j=0; j<256; j++) { // 5 cycles of all colors on wheel
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for(int i=0; i< strip.numPixels(); i++) {
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wheelVal = Wheel(((i * 256 / strip.numPixels()) + j) & 255);
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redVal = red(wheelVal) * float(fadeVal/fadeMax);
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greenVal = green(wheelVal) * float(fadeVal/fadeMax);
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blueVal = blue(wheelVal) * float(fadeVal/fadeMax);
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strip.setPixelColor( i, strip.Color( redVal, greenVal, blueVal ) );
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}
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//First loop, fade in!
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if(k == 0 && fadeVal < fadeMax-1) {
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fadeVal++;
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}
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//Last loop, fade out!
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else if(k == rainbowLoops - 1 && j > 255 - fadeMax ){
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fadeVal--;
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}
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strip.show();
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delay(wait);
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}
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}
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delay(500);
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for(int k = 0 ; k < whiteLoops ; k ++){
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for(int j = 0; j < 256 ; j++){
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for(uint16_t i=0; i < strip.numPixels(); i++) {
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strip.setPixelColor(i, strip.Color(0,0,0, LEDGamma[j] ) );
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}
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strip.show();
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}
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delay(2000);
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for(int j = 255; j >= 0 ; j--){
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for(uint16_t i=0; i < strip.numPixels(); i++) {
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strip.setPixelColor(i, strip.Color(0,0,0, LEDGamma[j] ) );
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}
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strip.show();
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}
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}
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delay(500);
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}
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void whiteOverRainbow(uint8_t wait, uint8_t whiteSpeed, uint8_t whiteLength ) {
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if(whiteLength >= strip.numPixels()) whiteLength = strip.numPixels() - 1;
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int head = whiteLength - 1;
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int tail = 0;
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int loops = 3;
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int loopNum = 0;
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static unsigned long lastTime = 0;
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while(true){
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for(int j=0; j<256; j++) {
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for(uint16_t i=0; i<strip.numPixels(); i++) {
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if((i >= tail && i <= head) || (tail > head && i >= tail) || (tail > head && i <= head) ){
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strip.setPixelColor(i, strip.Color(0,0,0, 255 ) );
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}
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else{
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strip.setPixelColor(i, Wheel(((i * 256 / strip.numPixels()) + j) & 255));
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}
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}
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if(millis() - lastTime > whiteSpeed) {
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head++;
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tail++;
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if(head == strip.numPixels()){
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loopNum++;
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}
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lastTime = millis();
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}
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if(loopNum == loops) return;
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head%=strip.numPixels();
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tail%=strip.numPixels();
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strip.show();
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delay(wait);
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}
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}
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}
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void fullWhite() {
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for(uint16_t i=0; i<strip.numPixels(); i++) {
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strip.setPixelColor(i, strip.Color(0,0,0, 255 ) );
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}
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strip.show();
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}
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uint8_t red(uint32_t c) {
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return (c >> 16);
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}
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uint8_t green(uint32_t c) {
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return (c >> 8);
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}
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uint8_t blue(uint32_t c) {
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return (c);
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}
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