diff --git a/test_led.py b/test_led.py
index e0f6193..4eecac1 100644
--- a/test_led.py
+++ b/test_led.py
@@ -16,3 +16,4 @@ while True:
     time.sleep(20)
     led.value = 1  # 输出高电平，点亮板载LED蓝灯
     print("点亮")
+    time.sleep(20)