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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,163 @@ | ||
| #include "FastLED.h" | ||
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| #define NUM_LEDS 90 | ||
| #define LED_DATA_PIN 6 | ||
| #define NUM_BYTES ((NUM_LEDS*3) + 1) // 3 colors + 1 for brightness | ||
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| #define BRIGHTNESS 255 | ||
| #define UPDATES_PER_SECOND 60 | ||
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| #define TIMEOUT 3000 | ||
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| #define MODE_ANIMATION 0 | ||
| #define MODE_AMBILIGHT 1 | ||
| #define MODE_BLACK 2 | ||
| uint8_t mode = MODE_ANIMATION; | ||
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| byte MESSAGE_PREAMBLE[] = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09 }; | ||
| uint8_t PREAMBLE_LENGTH = 10; | ||
| uint8_t current_preamble_position = 0; | ||
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| unsigned long last_serial_available = -1L; | ||
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| int led_counter = 0; | ||
| int byte_counter = 0; | ||
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| CRGB leds[NUM_LEDS]; | ||
| byte buffer[NUM_BYTES]; | ||
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| // Filler animation attributes | ||
| CRGBPalette16 currentPalette = RainbowColors_p; | ||
| TBlendType currentBlending = LINEARBLEND; | ||
| uint8_t startIndex = 0; | ||
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| void setup() | ||
| { | ||
| Serial.begin(1000000); // 115200 | ||
| FastLED.clear(true); | ||
| FastLED.addLeds<WS2812B, LED_DATA_PIN, GRB>(leds, NUM_LEDS); | ||
| FastLED.setBrightness(BRIGHTNESS); | ||
| } | ||
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| void loop() | ||
| { | ||
| switch (mode) { | ||
| case MODE_ANIMATION: | ||
| fillLEDsFromPaletteColors(); | ||
| break; | ||
|
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| case MODE_AMBILIGHT: | ||
| processIncomingData(); | ||
| break; | ||
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| case MODE_BLACK: | ||
| showBlack(); | ||
| break; | ||
| } | ||
| } | ||
|
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| void processIncomingData() | ||
| { | ||
| if (waitForPreamble(TIMEOUT)) | ||
| { | ||
| Serial.readBytes(buffer, NUM_BYTES); | ||
| byte brightness; | ||
| //The first byte on the array is the brightness value | ||
| if (buffer[byte_counter++] == 1) | ||
| { | ||
| brightness = (exp(sin(millis() / 2000.0*PI)) - 0.36787944)*108.0; | ||
| byte_counter++; | ||
| } | ||
| else | ||
| { | ||
| brightness = buffer[byte_counter++]; | ||
| } | ||
|
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| //Let's set the brightness only if the value changed to avoid extra delays on effects that don't include breath mode | ||
| FastLED.setBrightness(brightness); | ||
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| while (byte_counter < NUM_BYTES) | ||
| { | ||
| byte blue = buffer[byte_counter++]; | ||
| byte green = buffer[byte_counter++]; | ||
| byte red = buffer[byte_counter++]; | ||
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| leds[led_counter++] = CRGB(red, green, blue); | ||
| } | ||
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| FastLED.show(); | ||
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| // flush the serial buffer to avoid flickering | ||
| while (Serial.available()) { Serial.read(); } | ||
|
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| byte_counter = 0; | ||
| led_counter = 0; | ||
| } | ||
| else | ||
| { | ||
| //if we get here, there must have been data before(so the user already knows, it works!) | ||
| //simply go to black! | ||
| //mode = MODE_BLACK; //If the arduino stops receiving commands, shut down the LEDs | ||
| mode = MODE_ANIMATION; //If the Arduino stops receiving commands, start the rainbow effect | ||
| } | ||
| } | ||
|
|
||
| bool waitForPreamble(int timeout) | ||
| { | ||
| last_serial_available = millis(); | ||
| current_preamble_position = 0; | ||
| while (current_preamble_position < PREAMBLE_LENGTH) | ||
| { | ||
| if (Serial.available() > 0) | ||
| { | ||
| last_serial_available = millis(); | ||
|
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| if (Serial.read() == MESSAGE_PREAMBLE[current_preamble_position]) | ||
| { | ||
| current_preamble_position++; | ||
| } | ||
| else | ||
| { | ||
| current_preamble_position = 0; | ||
| } | ||
| } | ||
|
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| if (millis() - last_serial_available > timeout) | ||
| { | ||
| return false; | ||
| } | ||
| } | ||
| return true; | ||
| } | ||
|
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| void fillLEDsFromPaletteColors() | ||
| { | ||
| startIndex++; | ||
|
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| uint8_t colorIndex = startIndex; | ||
| for (int i = 0; i < NUM_LEDS; i++) { | ||
| leds[i] = ColorFromPalette(currentPalette, colorIndex, BRIGHTNESS, currentBlending); | ||
| colorIndex += 3; | ||
| } | ||
|
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| FastLED.delay(1000 / UPDATES_PER_SECOND); | ||
|
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| if (Serial.available() > 0) | ||
| { | ||
| mode = MODE_AMBILIGHT; | ||
| } | ||
| } | ||
|
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| void showBlack() | ||
| { | ||
| for (int i = 0; i < NUM_LEDS; i++) | ||
| { | ||
| leds[i] = CRGB(0, 0, 0); | ||
| } | ||
| FastLED.delay(1000 / UPDATES_PER_SECOND); | ||
|
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||
| if (Serial.available() > 0) | ||
| { | ||
| mode = MODE_AMBILIGHT; | ||
| } | ||
| } |
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