from machine import Pin
from neopixel import NeoPixel
import time

#主板上RGB LED接口默认为38引脚
pin = Pin(38, Pin.OUT)   
LED = NeoPixel(pin, 1)   

print("Hello, ESP32-S3!")        
while True:
    
    #将引脚设置为“1”输出电平
    LED[0] = (100,0,0) 
    LED.write()  
    
    #延时500ms
    time.sleep(0.5)
    
    #将引脚设置为“0”输出电平
    LED[0] = (0,0,0) 
    LED.write()  
    
    #延时500ms
    time.sleep(0.5)