// LED Matrix with SD card

#include <FastLED.h>
#include <SdFat.h>

#define NUM_STRIPS 32
#define NUM_LEDS_PER_STRIP 32

// leds[0][0] is the bottom left corner
// leds[0][31] is the bottom right corner
// leds[31][0] is the top left corner
CRGB leds[NUM_STRIPS][NUM_LEDS_PER_STRIP];

//SD chip select pin
const uint8_t chipSelect = 6;
SdFat sd;
SdFile file;


void setup() {
  // tell FastLED there's 32 WS2812B leds on pins 10-41
  FastLED.addLeds<WS2812B, 10, GRB>(leds[0], NUM_LEDS_PER_STRIP);
  FastLED.addLeds<WS2812B, 11, GRB>(leds[1], NUM_LEDS_PER_STRIP);
  FastLED.addLeds<WS2812B, 12, GRB>(leds[2], NUM_LEDS_PER_STRIP);
  FastLED.addLeds<WS2812B, 13, GRB>(leds[3], NUM_LEDS_PER_STRIP);
  FastLED.addLeds<WS2812B, 14, GRB>(leds[4], NUM_LEDS_PER_STRIP);
  FastLED.addLeds<WS2812B, 15, GRB>(leds[5], NUM_LEDS_PER_STRIP);
  FastLED.addLeds<WS2812B, 16, GRB>(leds[6], NUM_LEDS_PER_STRIP);
  FastLED.addLeds<WS2812B, 17, GRB>(leds[7], NUM_LEDS_PER_STRIP);
  FastLED.addLeds<WS2812B, 18, GRB>(leds[8], NUM_LEDS_PER_STRIP);
  FastLED.addLeds<WS2812B, 19, GRB>(leds[9], NUM_LEDS_PER_STRIP);
  FastLED.addLeds<WS2812B, 20, GRB>(leds[10], NUM_LEDS_PER_STRIP);
  FastLED.addLeds<WS2812B, 21, GRB>(leds[11], NUM_LEDS_PER_STRIP);
  FastLED.addLeds<WS2812B, 22, GRB>(leds[12], NUM_LEDS_PER_STRIP);
  FastLED.addLeds<WS2812B, 23, GRB>(leds[13], NUM_LEDS_PER_STRIP);
  FastLED.addLeds<WS2812B, 24, GRB>(leds[14], NUM_LEDS_PER_STRIP);
  FastLED.addLeds<WS2812B, 25, GRB>(leds[15], NUM_LEDS_PER_STRIP);
  FastLED.addLeds<WS2812B, 26, GRB>(leds[16], NUM_LEDS_PER_STRIP);
  FastLED.addLeds<WS2812B, 27, GRB>(leds[17], NUM_LEDS_PER_STRIP);
  FastLED.addLeds<WS2812B, 28, GRB>(leds[18], NUM_LEDS_PER_STRIP);
  FastLED.addLeds<WS2812B, 29, GRB>(leds[19], NUM_LEDS_PER_STRIP);
  FastLED.addLeds<WS2812B, 30, GRB>(leds[20], NUM_LEDS_PER_STRIP);
  FastLED.addLeds<WS2812B, 31, GRB>(leds[21], NUM_LEDS_PER_STRIP);
  FastLED.addLeds<WS2812B, 32, GRB>(leds[22], NUM_LEDS_PER_STRIP);
  FastLED.addLeds<WS2812B, 33, GRB>(leds[23], NUM_LEDS_PER_STRIP);
  FastLED.addLeds<WS2812B, 34, GRB>(leds[24], NUM_LEDS_PER_STRIP);
  FastLED.addLeds<WS2812B, 35, GRB>(leds[25], NUM_LEDS_PER_STRIP);
  FastLED.addLeds<WS2812B, 36, GRB>(leds[26], NUM_LEDS_PER_STRIP);
  FastLED.addLeds<WS2812B, 37, GRB>(leds[27], NUM_LEDS_PER_STRIP);
  FastLED.addLeds<WS2812B, 38, GRB>(leds[28], NUM_LEDS_PER_STRIP);
  FastLED.addLeds<WS2812B, 39, GRB>(leds[29], NUM_LEDS_PER_STRIP);
  FastLED.addLeds<WS2812B, 40, GRB>(leds[30], NUM_LEDS_PER_STRIP);
  FastLED.addLeds<WS2812B, 41, GRB>(leds[31], NUM_LEDS_PER_STRIP);

  sd.begin(chipSelect, SPI_FULL_SPEED);
}

void loop() {
  // This loop will blink one pixel at a time, iterating over the entire matrix
  // for(int x = 0; x < NUM_STRIPS; x++) {
  //   for(int i = 0; i < NUM_LEDS_PER_STRIP; i++) {
  //     leds[x][i] = CRGB::Red;
  //     FastLED.show();
  //     leds[x][i] = CRGB::Black;
  //   }
  // }
  
  /*******************************************/
  // open first effect file - rainbow.dat
  // file size 70,800 bytes
      //or
  // total leds 118
  // 3 bytes for each rgb color
  // total recorded frames 200
  // 118 x 3 X 200 = 70,800 bytes
  /*******************************************/
  
  //FIXME this file does not exist
   file.open("D0.dat", O_READ); 

   for(int i = 0 ;i<200;i++) // 200 frames
  {
    
    //fix the array indexing here
   file.read((uint8_t*)leds,NUM_LEDS*3); // total bytes(buffer) for each frame 118 x 3 = 354
                         

  FastLED.show();
  delay(40); // delay between each frame 
  }

  file.close();
}