Beiträge von Drehknopf

#include "FastLED.h"


#define ANALOG_MODE_AVERAGE  0
#define ANALOG_MODE_LAST_LED 1


/**************************************
S E T U P


set following values to your needs
**************************************/


#define INITIAL_LED_TEST_ENABLED true
#define INITIAL_LED_TEST_BRIGHTNESS 32  // 0..255
#define INITIAL_LED_TEST_TIME_MS 2000  // 10..


// Number of leds in your strip. set to "1" and ANALOG_OUTPUT_ENABLED to "true" to activate analog only
// As of 26/1/2017:
// 582 leaves ZERO bytes free and this
// 410 is ok
// tested with 500 leds and is fine (despite the warning)
#define MAX_LEDS 108


// type of your led controller, possible values, see below
#define LED_TYPE APA102


// 3 wire (pwm): NEOPIXEL BTM1829 TM1812 TM1809 TM1804 TM1803 UCS1903 UCS1903B UCS1904 UCS2903 WS2812 WS2852
//               S2812B SK6812 SK6822 APA106 PL9823 WS2811 WS2813 APA104 WS2811_40 GW6205 GW6205_40 LPD1886 LPD1886_8BIT
// 4 wire (spi): LPD8806 WS2801 WS2803 SM16716 P9813 APA102 SK9822 DOTSTAR


// For 3 wire led stripes line Neopixel/Ws2812, which have a data line, ground, and power, you just need to define DATA_PIN.
// For led chipsets that are SPI based (four wires - data, clock, ground, and power), both defines DATA_PIN and CLOCK_PIN are needed


// DATA_PIN, or DATA_PIN, CLOCK_PIN
//#define LED_PINS 6        // 3 wire leds
#define LED_PINS 6, 8  // 4 wire leds


#define COLOR_ORDER GRB  // colororder of the stripe, set RGB in hyperion


#define OFF_TIMEOUT 0    // ms to switch off after no data was received, set 0 to deactivate


// analog rgb uni color led stripe - using of hyperion smoothing is recommended
// ATTENTION  this pin config is default for atmega328 based arduinos, others might work to
//            if you have flickering analog leds this might be caused by unsynced pwm signals
//            try other pins is more or less the only thing that helps
#define ANALOG_OUTPUT_ENABLED false
#define ANALOG_MODE           ANALOG_MODE_LAST_LED  // use ANALOG_MODE_AVERAGE or ANALOG_MODE_LAST_LED
#define ANALOG_GROUND_PIN     8                     // additional ground pin to make wiring a bit easier
#define ANALOG_RED_PIN        9
#define ANALOG_GREEN_PIN      10
#define ANALOG_BLUE_PIN       11


// overall color adjustments
#define ANALOG_BRIGHTNESS_RED   255              // maximum brightness for analog 0-255
#define ANALOG_BRIGHTNESS_GREEN 255              // maximum brightness for analog 0-255
#define ANALOG_BRIGHTNESS_BLUE  255              // maximum brightness for analog 0-255


#define BRIGHTNESS 255                      // maximum brightness 0-255
#define DITHER_MODE BINARY_DITHER           // BINARY_DITHER or DISABLE_DITHER
#define COLOR_TEMPERATURE CRGB(255,255,255) // RGB value describing the color temperature
#define COLOR_CORRECTION  TypicalLEDStrip   // predefined fastled color correction
//#define COLOR_CORRECTION  CRGB(255,255,255) // or RGB value describing the color correction


// Baudrate, higher rate allows faster refresh rate and more LEDs
//#define serialRate 460800      // use 115200 for ftdi based boards
//#define serialRate 115200     // use 115200 for ftdi based boards
#define serialRate 500000         // use 115200 for ftdi based boards




/**************************************
A D A L I G H T   C O D E


no user changes needed
**************************************/


// Adalight sends a "Magic Word" (defined in /etc/boblight.conf) before sending the pixel data
uint8_t prefix[] = {'A', 'd', 'a'}, hi, lo, chk, i;


unsigned long endTime;


// Define the array of leds
CRGB leds[MAX_LEDS];


// set rgb to analog led stripe
void showAnalogRGB(const CRGB& led) {
if (ANALOG_OUTPUT_ENABLED) {
byte r = map(led.r, 0, 255, 0, ANALOG_BRIGHTNESS_RED);
byte g = map(led.g, 0, 255, 0, ANALOG_BRIGHTNESS_GREEN);
byte b = map(led.b, 0, 255, 0, ANALOG_BRIGHTNESS_BLUE);
analogWrite(ANALOG_RED_PIN  , r);
analogWrite(ANALOG_GREEN_PIN, g);
analogWrite(ANALOG_BLUE_PIN , b);
}
}


// set color to all leds
void showColor(const CRGB& led) {
#if MAX_LEDS > 1 || ANALOG_OUTPUT_ENABLED == false
LEDS.showColor(led);
#endif
showAnalogRGB(led);
}


// switch of digital and analog leds
void switchOff() {
#if MAX_LEDS > 1 || ANALOG_OUTPUT_ENABLED == false
memset(leds, 0, MAX_LEDS * sizeof(struct CRGB));
FastLED.show();
#endif
showAnalogRGB(leds[0]);
}


// function to check if serial data is available
// if timeout occured leds switch of, if configured
bool checkIncommingData() {
boolean dataAvailable = true;
while (!Serial.available()) {
if ( OFF_TIMEOUT > 0 && endTime < millis()) {
switchOff();
dataAvailable = false;
endTime = millis() + OFF_TIMEOUT;
}
}


return dataAvailable;
}


// main function that setups and runs the code
void setup() {
Serial.begin(serialRate);


// analog output
if (ANALOG_OUTPUT_ENABLED) {
// additional ground pin to make wiring a bit easier
pinMode(ANALOG_GROUND_PIN, OUTPUT);
digitalWrite(ANALOG_GROUND_PIN, LOW);
pinMode(ANALOG_BLUE_PIN , OUTPUT);
pinMode(ANALOG_RED_PIN  , OUTPUT);
pinMode(ANALOG_GREEN_PIN, OUTPUT);
}


int ledCount = MAX_LEDS;
if (ANALOG_MODE == ANALOG_MODE_LAST_LED) {
ledCount--;
}


#if MAX_LEDS > 1 || ANALOG_OUTPUT_ENABLED == false
FastLED.addLeds<LED_TYPE, LED_PINS, COLOR_ORDER>(leds, ledCount);
#endif


// color adjustments
FastLED.setBrightness ( BRIGHTNESS );
FastLED.setTemperature( COLOR_TEMPERATURE );
FastLED.setCorrection ( COLOR_CORRECTION );
FastLED.setDither     ( DITHER_MODE );


// initial RGB flash
#if INITIAL_LED_TEST_ENABLED == true
for (int v = 0; v < INITIAL_LED_TEST_BRIGHTNESS; v++)
{
showColor(CRGB(v, v, v));
delay(INITIAL_LED_TEST_TIME_MS / 2 / INITIAL_LED_TEST_BRIGHTNESS);
}


for (int v = 0; v < INITIAL_LED_TEST_BRIGHTNESS; v++)
{
showColor(CRGB(v, v, v));
delay(INITIAL_LED_TEST_TIME_MS / 2 / INITIAL_LED_TEST_BRIGHTNESS);
}
#endif
showColor(CRGB(0, 0, 0));


Serial.print("Ada\n"); // Send "Magic Word" string to host




boolean transmissionSuccess;
unsigned long sum_r, sum_g, sum_b;


// loop() is avoided as even that small bit of function overhead
// has a measurable impact on this code's overall throughput.
for (;;) {
// wait for first byte of Magic Word
for (i = 0; i < sizeof prefix; ++i) {
// If next byte is not in Magic Word, the start over
if (!checkIncommingData() || prefix[i] != Serial.read()) {
i = 0;
}
}


// Hi, Lo, Checksum
if (!checkIncommingData()) continue;
hi = Serial.read();
if (!checkIncommingData()) continue;
lo = Serial.read();
if (!checkIncommingData()) continue;
chk = Serial.read();


// if checksum does not match go back to wait
if (chk != (hi ^ lo ^ 0x55)) continue;


memset(leds, 0, MAX_LEDS * sizeof(struct CRGB));
transmissionSuccess = true;
sum_r = 0;
sum_g = 0;
sum_b = 0;


int num_leds = min ( MAX_LEDS, (hi << 8) + lo + 1 );


// read the transmission data and set LED values
for (int idx = 0; idx < num_leds; idx++) {
byte r, g, b;
if (!checkIncommingData()) {
transmissionSuccess = false;
break;
}
r = Serial.read();
if (!checkIncommingData()) {
transmissionSuccess = false;
break;
}
g = Serial.read();
if (!checkIncommingData()) {
transmissionSuccess = false;
break;
}
b = Serial.read();
leds[idx].r = r;
leds[idx].g = g;
leds[idx].b = b;
#if ANALOG_OUTPUT_ENABLED == true && ANALOG_MODE == ANALOG_MODE_AVERAGE
sum_r += r;
sum_g += g;
sum_b += b;
#endif
}


// shows new values
if (transmissionSuccess) {
endTime = millis() + OFF_TIMEOUT;
#if MAX_LEDS > 1 || ANALOG_OUTPUT_ENABLED == false
FastLED.show();
#endif


#if ANALOG_OUTPUT_ENABLED == true
#if ANALOG_MODE == ANALOG_MODE_LAST_LED
showAnalogRGB(leds[MAX_LEDS - 1]);
#else
showAnalogRGB(CRGB(sum_r / MAX_LEDS, sum_g / MAX_LEDS, sum_b / MAX_LEDS));
#endif
#endif
}
}
} // end of setup


void loop() {
// Not used. See note in setup() function.
}