84 lines
2.1 KiB
Arduino
84 lines
2.1 KiB
Arduino
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// NeoPixelBrightness
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// This example will cycle brightness from high to low of
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// three pixels colored Red, Green, Blue.
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// This demonstrates the use of the NeoPixelBrightnessBus
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// with integrated brightness support
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//
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// There is serial output of the current state so you can
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// confirm and follow along
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//
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#include <NeoPixelBrightnessBus.h> // instead of NeoPixelBus.h
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const uint16_t PixelCount = 3; // this example assumes 3 pixels, making it smaller will cause a failure
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const uint8_t PixelPin = 14; // make sure to set this to the correct pin, ignored for Esp8266
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#define colorSaturation 255 // saturation of color constants
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RgbColor red(colorSaturation, 0, 0);
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RgbColor green(0, colorSaturation, 0);
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RgbColor blue(0, 0, colorSaturation);
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// Make sure to provide the correct color order feature
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// for your NeoPixels
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NeoPixelBrightnessBus<NeoRgbFeature, Neo800KbpsMethod> strip(PixelCount, PixelPin);
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// you loose the original color the lower the dim value used
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// here due to quantization
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const uint8_t c_MinBrightness = 8;
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const uint8_t c_MaxBrightness = 255;
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int8_t direction; // current direction of dimming
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void setup()
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{
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Serial.begin(115200);
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while (!Serial); // wait for serial attach
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Serial.println();
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Serial.println("Initializing...");
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Serial.flush();
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// this resets all the neopixels to an off state
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strip.Begin();
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strip.Show();
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direction = -1; // default to dim first
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Serial.println();
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Serial.println("Running...");
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// set our three original colors
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strip.SetPixelColor(0, red);
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strip.SetPixelColor(1, green);
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strip.SetPixelColor(2, blue);
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strip.Show();
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}
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void loop()
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{
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uint8_t brightness = strip.GetBrightness();
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Serial.println(brightness);
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delay(100);
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// swap diection of dim when limits are reached
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//
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if (direction < 0 && brightness <= c_MinBrightness)
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{
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direction = 1;
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}
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else if (direction > 0 && brightness >= c_MaxBrightness)
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{
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direction = -1;
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}
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// apply dimming
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brightness += direction;
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strip.SetBrightness(brightness);
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// show the results
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strip.Show();
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}
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