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Diffstat (limited to 'Библиотеки/FastLED-master/examples/ColorPalette/ColorPalette.ino')
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diff --git a/Библиотеки/FastLED-master/examples/ColorPalette/ColorPalette.ino b/Библиотеки/FastLED-master/examples/ColorPalette/ColorPalette.ino new file mode 100644 index 0000000..0fdfb59 --- /dev/null +++ b/Библиотеки/FastLED-master/examples/ColorPalette/ColorPalette.ino @@ -0,0 +1,188 @@ +#include <FastLED.h> + +#define LED_PIN 5 +#define NUM_LEDS 50 +#define BRIGHTNESS 64 +#define LED_TYPE WS2811 +#define COLOR_ORDER GRB +CRGB leds[NUM_LEDS]; + +#define UPDATES_PER_SECOND 100 + +// This example shows several ways to set up and use 'palettes' of colors +// with FastLED. +// +// These compact palettes provide an easy way to re-colorize your +// animation on the fly, quickly, easily, and with low overhead. +// +// USING palettes is MUCH simpler in practice than in theory, so first just +// run this sketch, and watch the pretty lights as you then read through +// the code. Although this sketch has eight (or more) different color schemes, +// the entire sketch compiles down to about 6.5K on AVR. +// +// FastLED provides a few pre-configured color palettes, and makes it +// extremely easy to make up your own color schemes with palettes. +// +// Some notes on the more abstract 'theory and practice' of +// FastLED compact palettes are at the bottom of this file. + + + +CRGBPalette16 currentPalette; +TBlendType currentBlending; + +extern CRGBPalette16 myRedWhiteBluePalette; +extern const TProgmemPalette16 myRedWhiteBluePalette_p PROGMEM; + + +void setup() { + delay( 3000 ); // power-up safety delay + FastLED.addLeds<LED_TYPE, LED_PIN, COLOR_ORDER>(leds, NUM_LEDS).setCorrection( TypicalLEDStrip ); + FastLED.setBrightness( BRIGHTNESS ); + + currentPalette = RainbowColors_p; + currentBlending = LINEARBLEND; +} + + +void loop() +{ + ChangePalettePeriodically(); + + static uint8_t startIndex = 0; + startIndex = startIndex + 1; /* motion speed */ + + FillLEDsFromPaletteColors( startIndex); + + FastLED.show(); + FastLED.delay(1000 / UPDATES_PER_SECOND); +} + +void FillLEDsFromPaletteColors( uint8_t colorIndex) +{ + uint8_t brightness = 255; + + for( int i = 0; i < NUM_LEDS; i++) { + leds[i] = ColorFromPalette( currentPalette, colorIndex, brightness, currentBlending); + colorIndex += 3; + } +} + + +// There are several different palettes of colors demonstrated here. +// +// FastLED provides several 'preset' palettes: RainbowColors_p, RainbowStripeColors_p, +// OceanColors_p, CloudColors_p, LavaColors_p, ForestColors_p, and PartyColors_p. +// +// Additionally, you can manually define your own color palettes, or you can write +// code that creates color palettes on the fly. All are shown here. + +void ChangePalettePeriodically() +{ + uint8_t secondHand = (millis() / 1000) % 60; + static uint8_t lastSecond = 99; + + if( lastSecond != secondHand) { + lastSecond = secondHand; + if( secondHand == 0) { currentPalette = RainbowColors_p; currentBlending = LINEARBLEND; } + if( secondHand == 10) { currentPalette = RainbowStripeColors_p; currentBlending = NOBLEND; } + if( secondHand == 15) { currentPalette = RainbowStripeColors_p; currentBlending = LINEARBLEND; } + if( secondHand == 20) { SetupPurpleAndGreenPalette(); currentBlending = LINEARBLEND; } + if( secondHand == 25) { SetupTotallyRandomPalette(); currentBlending = LINEARBLEND; } + if( secondHand == 30) { SetupBlackAndWhiteStripedPalette(); currentBlending = NOBLEND; } + if( secondHand == 35) { SetupBlackAndWhiteStripedPalette(); currentBlending = LINEARBLEND; } + if( secondHand == 40) { currentPalette = CloudColors_p; currentBlending = LINEARBLEND; } + if( secondHand == 45) { currentPalette = PartyColors_p; currentBlending = LINEARBLEND; } + if( secondHand == 50) { currentPalette = myRedWhiteBluePalette_p; currentBlending = NOBLEND; } + if( secondHand == 55) { currentPalette = myRedWhiteBluePalette_p; currentBlending = LINEARBLEND; } + } +} + +// This function fills the palette with totally random colors. +void SetupTotallyRandomPalette() +{ + for( int i = 0; i < 16; i++) { + currentPalette[i] = CHSV( random8(), 255, random8()); + } +} + +// This function sets up a palette of black and white stripes, +// using code. Since the palette is effectively an array of +// sixteen CRGB colors, the various fill_* functions can be used +// to set them up. +void SetupBlackAndWhiteStripedPalette() +{ + // 'black out' all 16 palette entries... + fill_solid( currentPalette, 16, CRGB::Black); + // and set every fourth one to white. + currentPalette[0] = CRGB::White; + currentPalette[4] = CRGB::White; + currentPalette[8] = CRGB::White; + currentPalette[12] = CRGB::White; + +} + +// This function sets up a palette of purple and green stripes. +void SetupPurpleAndGreenPalette() +{ + CRGB purple = CHSV( HUE_PURPLE, 255, 255); + CRGB green = CHSV( HUE_GREEN, 255, 255); + CRGB black = CRGB::Black; + + currentPalette = CRGBPalette16( + green, green, black, black, + purple, purple, black, black, + green, green, black, black, + purple, purple, black, black ); +} + + +// This example shows how to set up a static color palette +// which is stored in PROGMEM (flash), which is almost always more +// plentiful than RAM. A static PROGMEM palette like this +// takes up 64 bytes of flash. +const TProgmemPalette16 myRedWhiteBluePalette_p PROGMEM = +{ + CRGB::Red, + CRGB::Gray, // 'white' is too bright compared to red and blue + CRGB::Blue, + CRGB::Black, + + CRGB::Red, + CRGB::Gray, + CRGB::Blue, + CRGB::Black, + + CRGB::Red, + CRGB::Red, + CRGB::Gray, + CRGB::Gray, + CRGB::Blue, + CRGB::Blue, + CRGB::Black, + CRGB::Black +}; + + + +// Additionl notes on FastLED compact palettes: +// +// Normally, in computer graphics, the palette (or "color lookup table") +// has 256 entries, each containing a specific 24-bit RGB color. You can then +// index into the color palette using a simple 8-bit (one byte) value. +// A 256-entry color palette takes up 768 bytes of RAM, which on Arduino +// is quite possibly "too many" bytes. +// +// FastLED does offer traditional 256-element palettes, for setups that +// can afford the 768-byte cost in RAM. +// +// However, FastLED also offers a compact alternative. FastLED offers +// palettes that store 16 distinct entries, but can be accessed AS IF +// they actually have 256 entries; this is accomplished by interpolating +// between the 16 explicit entries to create fifteen intermediate palette +// entries between each pair. +// +// So for example, if you set the first two explicit entries of a compact +// palette to Green (0,255,0) and Blue (0,0,255), and then retrieved +// the first sixteen entries from the virtual palette (of 256), you'd get +// Green, followed by a smooth gradient from green-to-blue, and then Blue. |