#include "FastLED.h"

#define NUM_LEDS 1024
#define DATA_PIN 7

CRGB leds[NUM_LEDS];

int colors[8][3]={
    {255,0,0},
    {0,255,0},
    {0,0,255},
    {255,255,0},
    {0,255,255},
    {255,0,255},
    {255,255,255},
    {0,0,0}
  };

void setup() {
  FastLED.addLeds<WS2812B, DATA_PIN, RGB>(leds, NUM_LEDS);
  Serial.begin(1000000);
  bootupColorSequence();
}

void bootupColorSequence(){
  for(int i=0;i<8;i++){
    fill(colors[i][0],colors[i][1],colors[i][2]);
    FastLED.show();
    delay(100);
  }
}


int serialReadBlocking(){
  while(!Serial.available()){}
  return Serial.read();
}
//result code:
//0 = everything fine.
//1 = no data, read timed out
//2 = frame incomplete
//3 = bad header
int numRead = 0;
int readFromSerial2(){
  int result = 0;
  if(numRead!=NUM_LEDS*3)
    Serial.write((byte)1);
  else
    Serial.write((byte)0);
  Serial.flush();
  numRead = Serial.readBytes((char*)leds, NUM_LEDS*3);
  return result;
}

void fill(int r,int g, int b){
  for(long i=0;i<NUM_LEDS;i++)
  {
    leds[i].r = r;
    leds[i].g = g;
    leds[i].b = b;
  }
}

void loop() {
  int status = readFromSerial2();
  FastLED.show();
}