#include <FastLED.h>


 #define LED_PIN     5
 #define COLOR_ORDER GRB
 #define CHIPSET     WS2811
 #define NUM_LEDS    (kMatrixWidth * kMatrixHeight)
 #define FRAMES_PER_SECOND 60
 //////////////////////////////////////////////////////
 const uint8_t kMatrixWidth  = 15;
 const uint8_t kMatrixHeight = 4;
 const bool    kMatrixSerpentineLayout = true;
 //////////////////
 int BRIGHTNESS = 250;

//////////////////////////////////////////////////
bool gReverseDirection = false;

CRGB leds[NUM_LEDS];

void setup() {
Serial.begin(115200);
Serial.println("*** Inicialization");
///////////////////////////////////////////////
delay(3000); // sanity delay
FastLED.addLeds<CHIPSET, LED_PIN, COLOR_ORDER>(leds, NUM_LEDS);
FastLED.setBrightness( BRIGHTNESS );
}
/////////////////////////////////// end setup

void loop()
{

 Fire2012();
 FastLED.show(); // display this frame
 FastLED.delay(1000 / FRAMES_PER_SECOND);
 FastLED.setBrightness( BRIGHTNESS );
 }


 void Fire2012()
 {
  int COOLING = 90;
  int SPARKING = 100;
   // Array of temperature readings at each simulation cell

    static byte heat[kMatrixWidth] [kMatrixHeight];

    // Step 1.  Cool down every cell a little
    for (int n = 0; n< kMatrixHeight; n++)
   {

     for ( int i = 0; i < kMatrixWidth; i++) {
       heat[i][n] = qsub8( heat[i][n],  random8(0, 
       ((COOLING * 10) / (kMatrixWidth)) + 2));
       }

       // Step 2. 
      for ( int k = (kMatrixWidth) - 1; k >= 2; k--) {
      heat[k][n] = (heat[k - 1][n] + heat[k - 2][n] + 
      heat[k - 2][n] ) / 3;
      }

       // Step 3. 
      if ( random8() < SPARKING ) {
       int y = random8(3);
       heat[y][n] = qadd8( heat[y][n], random8(160, 255) );
      }
     }

  // Step 4.  Map from heat cells to LED colors

for ( int i= 0; i < kMatrixWidth; i++) {
  for (int j = 0; j < kMatrixHeight; j++) {
    
    CRGB color = HeatColor(heat[i][j]);
    leds[XY(i, j)] = color;

  }
}



 
    }

   /////////////
    uint16_t XY( uint8_t x, uint8_t y)
    {
    uint16_t i;
    if ( kMatrixSerpentineLayout == false) {
    i = (y * kMatrixWidth) + x;
    }
    if ( kMatrixSerpentineLayout == true) {
    if ( y & 0x01) {
     // Odd rows run backwards
     uint8_t reverseX = (kMatrixWidth - 1) - x;
     i = (y * kMatrixWidth) + reverseX;
     } else {
    // Even rows run forwards
      i = (y * kMatrixWidth) + x;
     }
    }

    return i;

     }/////

#include <FastLED.h>


 #define LED_PIN     5
 #define COLOR_ORDER GRB
 #define CHIPSET     WS2811
 #define NUM_LEDS    (kMatrixWidth * kMatrixHeight)
 #define FRAMES_PER_SECOND 60
 //////////////////////////////////////////////////////
 const uint8_t kMatrixWidth  = 15;
 const uint8_t kMatrixHeight = 4;
 const bool    kMatrixSerpentineLayout = true;
 //////////////////
 int BRIGHTNESS = 250;

//////////////////////////////////////////////////
bool gReverseDirection = false;

CRGB leds[NUM_LEDS];

void setup() {
Serial.begin(115200);
Serial.println("*** Inicialization");
///////////////////////////////////////////////
delay(3000); // sanity delay
FastLED.addLeds<CHIPSET, LED_PIN, COLOR_ORDER>(leds, NUM_LEDS);
FastLED.setBrightness( BRIGHTNESS );
}
/////////////////////////////////// end setup

void loop()
{

 Fire2012();
 FastLED.show(); // display this frame
 FastLED.delay(1000 / FRAMES_PER_SECOND);
 FastLED.setBrightness( BRIGHTNESS );
 }


 void Fire2012()
 {
  int COOLING = 90;
  int SPARKING = 100;
   // Array of temperature readings at each simulation cell

    static byte heat[kMatrixWidth] [kMatrixHeight];

    // Step 1.  Cool down every cell a little
    for (int n = 0; n< kMatrixHeight; n++)
   {

     for ( int i = 0; i < kMatrixWidth; i++) {
       heat[i][n] = qsub8( heat[i][n],  random8(0, 
       ((COOLING * 10) / (kMatrixWidth)) + 2));
       }

       // Step 2. 
      for ( int k = (kMatrixWidth- 1); k >= 2; k--) {
      heat[k][n] = (heat[k - 1][n] + heat[k - 2][n] + 
      heat[k - 2][n] ) / 3;
      }

       // Step 3. 
      if ( random8() < SPARKING ) {
       int y = random8(3);
       heat[y][n] = qadd8( heat[y][n], random8(160, 255) );
      }
     }

  // Step 4.  Map from heat cells to LED colors

for ( int i= 0; i < kMatrixWidth; i++) {
  for (int j = 0; j < kMatrixHeight; j++) {
    
    CRGB color = HeatColor(heat[i][j]);
    leds[XY(i, j)] = color;

     }
   }

 }

   /////////////
    uint16_t XY( uint8_t x, uint8_t y)
    {
    uint16_t i;
    if ( kMatrixSerpentineLayout == false) {
    i = (y * kMatrixWidth) + x;
    }
    if ( kMatrixSerpentineLayout == true) {
    if ( y & 0x01) {
     // Odd rows run backwards
     uint8_t reverseX = (kMatrixWidth - 1) - x;
     i = (y * kMatrixWidth) + reverseX;
     } else {
    // Even rows run forwards
      i = (y * kMatrixWidth) + x;
     }
    }

    return i;

   }/////