M5Stack LED on and off

#include <M5Stack.h>
#define LED_PIN 16 // 16番ピンにLED接続

// the setup routine runs once when M5Stack starts up
void setup(){
  M5.begin(); // Initialize the M5Stack object
  pinMode(LED_PIN, OUTPUT);
}

// the loop routine runs over and over again forever
void loop() {
  digitalWrite(LED_PIN, HIGH);
  delay(1000);
  digitalWrite(LED_PIN, LOW);
  delay(1000);
}