#include <FastLED.h>
#include <SD.h>

#define LED_PIN     7
#define NUM_LEDS    256

CRGB leds[NUM_LEDS];

void setup() {
  FastLED.addLeds<WS2812B, LED_PIN, GRB>(leds, NUM_LEDS);

  Serial.begin(115200);

  Serial.print("Initializing SD card... ");

  if (!SD.begin(4)) {
    Serial.println("Card initialization failed!");
    return;
  }

  Serial.println("initialization done.");

  Serial.println("opening frame1");
  File file = SD.open("frame1.txt");
  if (!file) {
    Serial.println("Failed to open file");
    return;
  }
  Serial.println("opened frame1");

  int data[NUM_LEDS];
  int count = 0;

  while (file.available()) {
    String line = file.readStringUntil('\n');
//    Serial.println(line);
    data[count] = strtol(line.c_str(), NULL, 0);
    count++;
  }
  file.close();

  // for(int i = 0; i < NUM_LEDS; i++)
  // {
  //   Serial.println(data[i]);
  // }
  
  for (int i = 0; i < NUM_LEDS; i++) {
     leds[i] = data[i];
  }

    FastLED.show();
}

void loop() {
  // do nothing
}