#include <FastLED.h>

#define NUM_LEDS 300
#define DATA_PIN 23
#define CLOCK_PIN 18

CRGB leds[NUM_LEDS];

long startTime = 0;
long endTime = 0;
long ttotaltiem = 0;
int testCount = 0;


void setup() {
  Serial.begin(115200);
  FastLED.addLeds<APA102, DATA_PIN, CLOCK_PIN, GRB>(leds, NUM_LEDS);
  FastLED.setBrightness(100);
}

void loop() {
  startTime = millis();
    leds[0] = CRGB::Black;


  for(int i = 0; i< NUM_LEDS; i++){
  leds[i] = CRGB::White;
  FastLED.show();
  delayMicroseconds(1);
  leds[i] = CRGB::Black;
  }

  endTime = millis();
  ttotaltiem = endTime-startTime;

  // Output in CSV format
  Serial.print(testCount);
  Serial.print(",");
  Serial.println(ttotaltiem);
  
}