diff --git a/Demo_C/Demo/LED/LED.c b/Demo_C/Demo/LED/LED.c
index 5ef6e98..3779e45 100644
--- a/Demo_C/Demo/LED/LED.c
+++ b/Demo_C/Demo/LED/LED.c
@@ -9,7 +9,7 @@
 
 static unsigned long cur_time;
 static unsigned long prev_time;
-static enum {ON_1, PAUSE_1, ON_2, PAUSE_2} stage;
+static enum {GREEN, RED, BLUE} stage;
 static int lamp_idx;
 static int n_loops;
 static int wait;
@@ -21,7 +21,7 @@ void PrgInit
 )
 {
     prev_time = 0;
-    stage = ON_2;
+    stage = GREEN;
     lamp_idx = BEG_LAMP_IDX;
     n_loops = 10;
     wait = 1000;
@@ -46,12 +46,28 @@ int PrgTic
         if(cur_time-prev_time>=wait)
         {
             prev_time = cur_time;
-            p_ta->output.duty[lamp_idx-1] = LIGHT_OFF;
-            p_ta->output.duty[lamp_idx] = LIGHT_MAX;
-            p_ta->hook_table.DisplayMsg(p_ta, "Test");
-            if(++lamp_idx>END_LAMP_IDX)
+            p_ta->output.duty[stage-1] = LIGHT_OFF;
+            p_ta->output.duty[stage] = LIGHT_MAX;
+            p_ta->hook_table.DisplayMsg(p_ta, NULL);
+
+            switch(stage)
             {
-                lamp_idx = 0;
+                case GREEN:
+                    p_ta->hook_table.DisplayMsg(p_ta, "GREEN");
+                    break;
+                case RED:
+                    p_ta->hook_table.DisplayMsg(p_ta, "RED");
+                    break;
+                case BLUE:
+                    p_ta->hook_table.DisplayMsg(p_ta, "BLUE");
+                    break;
+                default:
+                    p_ta->hook_table.DisplayMsg(p_ta, NULL);
+            }
+
+            if(++stage>END_LAMP_IDX)
+            {
+                stage = 0;
                 p_ta->output.duty[END_LAMP_IDX] = LIGHT_OFF;
                 // p_ta->output.duty[lamp_idx] = LIGHT_MAX;
                 return rc;