diff --git a/Demo_C/Demo/LED/LED.c b/Demo_C/Demo/LED/LED.c
index 67f2798..a38a64d 100644
--- a/Demo_C/Demo/LED/LED.c
+++ b/Demo_C/Demo/LED/LED.c
@@ -59,18 +59,18 @@ int PrgTic
 	TA * p_ta = &p_ta_array[TA_LOCAL];
     // Get the current value of the system time
     cur_time = p_ta->hook_table.GetSystemTime(TIMER_UNIT_MILLISECONDS);
-    if(cur_time-prev_time>=wait)
-	{
-		prev_time = cur_time;
-		simple_rgb_test(p_ta_array);
-		update_lights(p_ta_array);
-	}
     // if(cur_time-prev_time>=wait)
 	// {
 	// 	prev_time = cur_time;
-	// 	spectrum();
+	// 	simple_rgb_test(p_ta_array);
 	// 	update_lights(p_ta_array);
 	// }
+    if(cur_time-prev_time>=wait)
+	{
+		prev_time = cur_time;
+		spectrum();
+		update_lights(p_ta_array);
+	}
 	return RC;
 }