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// LIBRARIES


#include <Wire.h>
#include "Adafruit_NeoPixel.h"


// DEFINITIONS


#define STARTCOLOR 0x006600  // LED color at startup 0xff8000 is green in hex code
#define BLACK      0x000000  // LED color BLACK


#define DATAPIN    6         // Datapin
#define LEDCOUNT   111       //  Number of LEDs used in your system                         
#define SHOWDELAY  20        // Delay in micro seconds before showing
#define BAUDRATE   460800    // Serial port speed


#define BRIGHTNESS 100        // Max. brightness in %


const char prefix[] = {0x41, 0x64, 0x61, 0x00, 0x6e, 0x3b};  // Prefix at the start of the transmission
char buffer[sizeof(prefix)];                                 // Temporary buffer for receiving the prefix data


// to calculate your prefix, the first 4 bytes will never change: const char prefix[] = {0x41, 0x64, 0x61, 0x00, this never changes.
// the next byte is equal to the number of LED - 1 --> (232-1)=231. 231 transformed in HEX. 231 in hex is E7 (use google)
// the last byte is equal to the XOR value of the calculated value just above and 0x55 (byte just calculated (E7) XORED with 0x55) = B2     use this link http://xor.pw/? and in input 1 put 55 and in input 2 put your HEX value.


// some precalculated values to save some time: 178 leds gives B1 and E4, 180 B3E6, 181 B4E1, 182 B5E0 232 E7B2 230 E5B0


Adafruit_NeoPixel strip = Adafruit_NeoPixel(LEDCOUNT, DATAPIN, NEO_GRB + NEO_KHZ800);
//LiquidCrystal_I2C lcd(0x20,16,2);                            // set the LCD address to 0x20 for a 16 chars and 2 line display


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
const int led_button = 11;                                   // ON/OFF button input
const int status_led = 8;                                    // LED of button
const int ch_2 = A0;                                         // Inputs from HDMI switcher
const int ch_3 = A1;
const int ch_4 = A2;
const int ch_5 = A3;


int curr_source = 0;                                         // Used to store which source is currently displayed
boolean strip_status = true;                                 // Used to chose if the LED strip is ON or OFF (depending on button choice)
unsigned long timeout = 0;                                   // Timeout used to turn LED strip off if no new data has come thorugh after some time


void setup()
{
  pinMode(led_button, INPUT);
  pinMode(ch_2, INPUT);
  pinMode(ch_3, INPUT);
  pinMode(ch_4, INPUT);
  pinMode(ch_5, INPUT);
  pinMode(status_led, OUTPUT);
  digitalWrite(led_button, HIGH);
  digitalWrite(status_led, HIGH);
  delay (15000);                                             // 15 seconds delay at startup to avoid strange behaviours as the PI boots up etc
  strip.begin();                                             // Init LED strand, set all black, then all to startcolor
 
  strip.setBrightness( (255 / 100) * 25 );
 
  setAllLEDs(BLACK, 0);
  setAllLEDs(STARTCOLOR, 10);                                // Will turn ON all LEDS with a 5ms delay between each turn ON creating a snake increasing pattern
 
  Serial.begin(BAUDRATE);                                   // Init serial speed
 
  state = STATE_WAITING;                                    // Initial state: Waiting for prefix
 
//lcd.init();                                                // Initialize the lcd
//lcd.backlight();                                           // Turn ON LCD backlight
//lcd.print(" waiting for PI");                              // Wait for PI to boot up for 5 sec (avoids the Arduino rebooting randomly)
delay(5000);
//lcd.clear();
//lcd.print("**** SOURCE ****");
strip.setBrightness( (255 / 100) * BRIGHTNESS );           // Set the brightness we chose above
}




void loop()
{
  do_strip();                                               // Main part of the code where we look at the data incoming from the PI
  if (state == STATE_WAITING)                               // Only if we are in WAITING state we check the source inputs and our ON/OFF button.
  {
  check_source();
  check_button();
  }
} 


void do_strip(void)
{
  if (strip_status == true)
  {
  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 ***
     timeout = millis();
      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)
}                                                         // if statement
else
{setAllLEDs(BLACK, 0);}
if(millis() > timeout + 5000)                             // If no new incoming data after 5seconds, turn the strip OFF.
{setAllLEDs(BLACK, 0);}
}                                                          // do_strip


void check_source (void)
{
if(digitalRead(ch_2) == HIGH)
{
   if(curr_source != 2)
   {
   //lcd.setCursor(0,1);
   curr_source = 2;
   //lcd.print("      PS_4  ");                             // Channel 2 of HDMI switcher LCD name
   }
}
else if(digitalRead(ch_3) == HIGH)
{
    if(curr_source != 3)
   {
   //lcd.setCursor(0,1);
   curr_source = 3;
   //lcd.print("    NOT USED");                             // Channel 3 of HDMI switcher LCD name
   }
}
else if(digitalRead(ch_4) == HIGH)
{
   if(curr_source != 4)
   {
   //lcd.setCursor(0,1);
   curr_source = 4;
   //lcd.print("     CD/DVD ");                             // Channel 4 of HDMI switcher LCD name
   }
}
else if(digitalRead(ch_5) == HIGH)
{
   if(curr_source != 5)
   {
   //lcd.setCursor(0,1);
   curr_source = 5;
   //lcd.print("    COMPUTER");                             // Channel 5 of HDMI switcher LCD name
   }
}
else

{
   if(curr_source != 1)
{
   //lcd.setCursor(0,1);
   curr_source = 1;
   //lcd.print("    AV INPUT");                             // Channel 1 of HDMI switcher LCD name
}
}
}


void check_button (void)                                  // ON/OFF button routine
{
  if(digitalRead(led_button) == LOW)
  {
      if(strip_status == true)
      {
        strip_status = false;
        digitalWrite(status_led, LOW);
      }
      else
      {
        strip_status = true;
        digitalWrite(status_led, HIGH);
      }
    delay(25);
    while(digitalRead(led_button) == LOW)
    {}
  }
}


                                                          // Sets the color of all LEDs in the strip
                                                          // 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

//DATA HOSTED WITH ♥ BY PASTEBIN.COM - DOWNLOAD RAW - SEE ORIGINAL
#include "FastLED.h"


// How many leds in your strip?
#define NUM_LEDS 111


// For led chips like Neopixels, 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), like the LPD8806 define both DATA_PIN and CLOCK_PIN
  #define DATA_PIN 6
//#define CLOCK_PIN 13


#define COLOR_ORDER RGB


// 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;


// Baudrate, higher rate allows faster refresh rate and more LEDs (defined in /etc/boblight.conf)
#define serialRate 460800


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


void setup() {
      // Uncomment/edit one of the following lines for your leds arrangement.
      // FastLED.addLeds<TM1803, DATA_PIN, RGB>(leds, NUM_LEDS);
      // FastLED.addLeds<TM1804, DATA_PIN, RGB>(leds, NUM_LEDS);
      // FastLED.addLeds<TM1809, DATA_PIN, RGB>(leds, NUM_LEDS);
      // FastLED.addLeds<WS2811, DATA_PIN, RGB>(leds, NUM_LEDS);
         FastLED.addLeds<WS2812, DATA_PIN, RGB>(leds, NUM_LEDS);
      // FastLED.addLeds<WS2812B, DATA_PIN, RGB>(leds, NUM_LEDS);
      // FastLED.addLeds<NEOPIXEL, DATA_PIN>(leds, NUM_LEDS);
      // FastLED.addLeds<UCS1903, DATA_PIN, RGB>(leds, NUM_LEDS);
      // FastLED.addLeds<UCS1903B, DATA_PIN, RGB>(leds, NUM_LEDS);
      // FastLED.addLeds<GW6205, DATA_PIN, RGB>(leds, NUM_LEDS);
      // FastLED.addLeds<GW6205_400, DATA_PIN, RGB>(leds, NUM_LEDS);

      // FastLED.addLeds<WS2801, RGB>(leds, NUM_LEDS);
      // FastLED.addLeds<SM16716, RGB>(leds, NUM_LEDS);
      // FastLED.addLeds<LPD8806, RGB>(leds, NUM_LEDS);


      // FastLED.addLeds<WS2801, DATA_PIN, CLOCK_PIN, RGB>(leds, NUM_LEDS);
      // FastLED.addLeds<SM16716, DATA_PIN, CLOCK_PIN, RGB>(leds, NUM_LEDS);
      // FastLED.addLeds<LPD8806, DATA_PIN, CLOCK_PIN, RGB>(leds, NUM_LEDS);

        // initial RGB flash
        LEDS.showColor(CRGB(255, 0, 0));
        delay(500);
        LEDS.showColor(CRGB(0, 255, 0));
        delay(500);
        LEDS.showColor(CRGB(0, 0, 255));
        delay(500);
        LEDS.showColor(CRGB(0, 0, 0));

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


}


void loop() {
  // wait for first byte of Magic Word
  for(i = 0; i < sizeof prefix; ++i) {
    waitLoop: while (!Serial.available()) ;;
    // Check next byte in Magic Word
    if(prefix[i] == Serial.read()) continue;
    // otherwise, start over
    i = 0;
    goto waitLoop;
  }


  // Hi, Lo, Checksum


  while (!Serial.available()) ;;
  hi=Serial.read();
  while (!Serial.available()) ;;
  lo=Serial.read();
  while (!Serial.available()) ;;
  chk=Serial.read();


  // if checksum does not match go back to wait
  if (chk != (hi ^ lo ^ 0x55))
  {
    i=0;
    goto waitLoop;
  }


  memset(leds, 0, NUM_LEDS * sizeof(struct CRGB));
  // read the transmission data and set LED values
  for (uint8_t i = 0; i < NUM_LEDS; i++) {
    byte r, g, b;    
    while(!Serial.available());
    r = Serial.read();
    while(!Serial.available());
    g = Serial.read();
    while(!Serial.available());
    b = Serial.read();
    leds[i].r = r;
    leds[i].g = g;
    leds[i].b = b;
  }
  // shows new values
 FastLED.show();
}

// DEVICE CONFIGURATION
        "device" :
        {
                "name"       : "MyHyperionConfig",
                "type"       : "Adalight",
                "output"     : "/dev/ttyACM0",
                "rate"       : 460800,
                "delayAfterConnect"     : 0,
                "colorOrder" : "rgb"


        },