# ------------------------------------------------------------
from machine import Pin
import time

# ===== CẤU HÌNH =====
CHAN_LED = 23             # LED cam o GPIO23
THOI_GIAN_SANG = 1000     # ms - LED sang bao lau
THOI_GIAN_TAT = 1000      # ms - LED tat bao lau
# ====================

led = Pin(CHAN_LED, Pin.OUT)

while True:
    led.on()
    time.sleep_ms(THOI_GIAN_SANG)

    led.off()
    time.sleep_ms(THOI_GIAN_TAT)