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- /* t4a_boblight
- * (C) 2014 Hans Luijten, www.tweaking4all.com
- *
- * t4a_boblight is free software and can be distributed and/or modified
- * freely as long as the copyright notice remains in place.
- * Nobody is allowed to charge you for this code.
- * Use of this code is entirely at your own risk.
- */
- #include "Adafruit_NeoPixel.h"
- // DEFINITIONS
- #define STARTCOLOR 0xFFFFFF // LED colors at start
- #define BLACK 0x000000 // LED color BLACK
- #define DATAPIN 5 // Datapin
- #define LEDCOUNT 176 // Number of LEDs used for boblight
- #define SHOWDELAY 200 // Delay in micro seconds before showing
- #define BAUDRATE 460800 // Serial port speed, 460800 tested with Arduino Uno R3
- #define BRIGHTNESS 100 // Max. brightness in %
- const char prefix[] = {0x41, 0x64, 0x61, 0x00, 0x18, 0x4D}; // Start prefix
- char buffer[sizeof(prefix)]; // Temp buffer for receiving prefix data
- // Init LED strand, WS2811/WS2912 specific
- // These might work for other configurations:
- // NEO_KHZ800 800 KHz bitstream (most NeoPixel products w/WS2812 LEDs)
- // NEO_KHZ400 400 KHz (classic 'v1' (not v2) FLORA pixels, WS2811 drivers)
- // NEO_GRB Pixels are wired for GRB bitstream (most NeoPixel products)
- // NEO_RGB Pixels are wired for RGB bitstream (v1 FLORA pixels, not v2)
- Adafruit_NeoPixel strip = Adafruit_NeoPixel(LEDCOUNT, DATAPIN, NEO_GRB + NEO_KHZ800);
- int state; // Define current state
- #define STATE_WAITING 1 // - Waiting for prefix
- #define STATE_DO_PREFIX 2 // - Processing prefix
- #define STATE_DO_DATA 3 // - Handling incoming LED colors
- int readSerial; // Read Serial data (1)
- int currentLED; // Needed for assigning the color to the right LED
- void setup()
- {
- strip.begin(); // Init LED strand, set all black, then all to startcolor
- strip.setBrightness( (255 / 100) * BRIGHTNESS );
- setAllLEDs(BLACK, 0);
- setAllLEDs(STARTCOLOR, 5);
- Serial.begin(BAUDRATE); // Init serial speed
- state = STATE_WAITING; // Initial state: Waiting for prefix
- }
- void loop()
- {
- switch(state)
- {
- case STATE_WAITING: // *** Waiting for prefix ***
- if( Serial.available()>0 )
- {
- readSerial = Serial.read(); // Read one character
- if ( readSerial == prefix[0] ) // if this character is 1st prefix char
- { state = STATE_DO_PREFIX; } // then set state to handle prefix
- }
- break;
- case STATE_DO_PREFIX: // *** Processing Prefix ***
- if( Serial.available() > sizeof(prefix) - 2 )
- {
- Serial.readBytes(buffer, sizeof(prefix) - 1);
- for( int Counter = 0; Counter < sizeof(prefix) - 1; Counter++)
- {
- if( buffer[Counter] == prefix[Counter+1] )
- {
- state = STATE_DO_DATA; // Received character is in prefix, continue
- currentLED = 0; // Set current LED to the first one
- }
- else
- {
- state = STATE_WAITING; // Crap, one of the received chars is NOT in the prefix
- break; // Exit, to go back to waiting for the prefix
- } // end if buffer
- } // end for Counter
- } // end if Serial
- break;
- case STATE_DO_DATA: // *** Process incoming color data ***
- if( Serial.available() > 2 ) // if we receive more than 2 chars
- {
- Serial.readBytes( buffer, 3 ); // Abuse buffer to temp store 3 charaters
- strip.setPixelColor( currentLED++, buffer[0], buffer[1], buffer[2]); // and assing to LEDs
- }
- if( currentLED > LEDCOUNT ) // Reached the last LED? Display it!
- {
- strip.show(); // Make colors visible
- delayMicroseconds(SHOWDELAY); // Wait a few micro seconds
- state = STATE_WAITING; // Reset to waiting ...
- currentLED = 0; // and go to LED one
- break; // and exit ... and do it all over again
- }
- break;
- } // switch(state)
- } // loop
- // Sets the color of all LEDs in the strand to 'color'
- // If 'wait'>0 then it will show a swipe from start to end
- void setAllLEDs(uint32_t color, int wait)
- {
- for ( int Counter=0; Counter < LEDCOUNT; Counter++ ) // For each LED
- {
- strip.setPixelColor( Counter, color ); // .. set the color
- if( wait > 0 ) // if a wait time was set then
- {
- strip.show(); // Show the LED color
- delay(wait); // and wait before we do the next LED
- } // if wait
- } // for Counter
- strip.show(); // Show all LEDs
- } // setAllLEDs
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