LED blink using M5Stamp C3

M5StampC3_Test.ino

#include <Adafruit_NeoPixel.h>

const int NUM_LEDS = 1;
const int LED_PIN = 2;

Adafruit_NeoPixel pixels(NUM_LEDS, LED_PIN, NEO_GRB + NEO_KHZ800);

void setup() {
  Serial.begin(115200);

  pixels.begin();
}

void loop() {
  Serial.println("Hello");

  pixels.setPixelColor(0, 100, 0, 0);
  pixels.show();
  delay(500);

  pixels.setPixelColor(0, 0, 0, 0);
  pixels.show();
  delay(500);
}