diff --git a/project/example/ble/ble_peripheral/app/src/Rf433.c b/project/example/ble/ble_peripheral/app/src/Rf433.c
index 6902477..41d735e 100644
--- a/project/example/ble/ble_peripheral/app/src/Rf433.c
+++ b/project/example/ble/ble_peripheral/app/src/Rf433.c
@@ -105,18 +105,58 @@ uint8_t long_flag_s=0;
 
 void _433_fun(void);
 
-// 在固定大小数组中添加新元素（滑动窗口）
-void addToFixedArray(uint8_t arr[], uint8_t newValue) {
-	uint8_t i;
-    // 所有元素向后移动一位
-    for( i = 4; i > 0; i--) {
-        arr[i] = arr[i - 1];
-    }
-    
-    // 在头部插入新值
-    arr[0] = newValue;
+// Keep paired addresses ordered from oldest to newest.
+static uint8_t Pairing_Address_IsEmpty(uint8_t high, uint8_t low)
+{
+    return ((high == 0U && low == 0U) ||
+            (high == 0xffU && low == 0xffU));
 }
 
+static void Pairing_Address_Touch(uint8_t high, uint8_t low)
+{
+    uint8_t next_h[5];
+    uint8_t next_l[5];
+    uint8_t count = 0U;
+    uint8_t i;
+
+    for(i = 0U; i < 5U; i++)
+    {
+        if(Pairing_Address_IsEmpty(adress_H_array[i], adress_L_array[i])) continue;
+        if(adress_H_array[i] == high && adress_L_array[i] == low) continue;
+
+        next_h[count] = adress_H_array[i];
+        next_l[count] = adress_L_array[i];
+        count++;
+    }
+
+    if(count >= 5U)
+    {
+        for(i = 0U; i < 4U; i++)
+        {
+            next_h[i] = next_h[i + 1U];
+            next_l[i] = next_l[i + 1U];
+        }
+        count = 4U;
+    }
+
+    next_h[count] = high;
+    next_l[count] = low;
+    count++;
+
+    for(i = 0U; i < 5U; i++)
+    {
+        if(i < count)
+        {
+            adress_H_array[i] = next_h[i];
+            adress_L_array[i] = next_l[i];
+        }
+        else
+        {
+            adress_H_array[i] = 0xffU;
+            adress_L_array[i] = 0xffU;
+        }
+    }
+}
 static void Pairing_Feedback_Apply(uint8_t on)
 {
     Light_Transition_SetFeedback(1U, on);
@@ -206,7 +246,6 @@ static void Pairing_Candidate_Reset(void)
 
 
 static void Encoder_key_NoCode(){
-   uint8_t i=0,j=0,isok=0,updata=0; 
 	 uint16_t times_s=0; 
 	
 		if(pair_frame_silence_ticks < 0xffU) pair_frame_silence_ticks++;
@@ -271,52 +310,13 @@ static void Encoder_key_NoCode(){
                 pair_deferred_command=0U;
 	
 				if(res_data==Brightness_H||res_data==B_Brightness_H||res_data==F_Brightness_10){
-					  adress=receive_data >>8;
-					  adress_H = (receive_data >> 16) & 0xff;
-            adress_L = (receive_data >> 8) & 0xff;
-				// 第一步：检查是否已存在
-							for(j = 0; j <5; j++) {
-									if(adress_H_array[j] == adress_H && adress_L_array[j] == adress_L) { 
-										  isok=1;
-											break;
-									}		
-									
-							}
-								// 如果不存在，找空位添加
-								if(j==5) {  // 循环完整结束，说明不存在
-										// 寻找空位置（值为0的位置）
-										for(i = 0; i <=4; i++) {
-												if(adress_H_array[i] == 0 && adress_L_array[i] == 0) {
-														adress_H_array[i] = adress_H;
-														adress_L_array[i] = adress_L;
-													
-														isok=1;
-														break;
-												}
-												if(i==4){
-												for(j = 0; j <5; j++) {
-															if(adress_H_array[j] == adress_H && adress_L_array[j] == adress_L) { 
-																	updata=1;																
-																	break;
-															}
-													}
-												if(updata==0){
-													addToFixedArray(adress_H_array,adress_H); 
-													addToFixedArray(adress_L_array,adress_L); 	
-												}
-	
-												}
-												
-										}	
-								}		
-								times_s=300;	
-								match_success=1;
-								
-							   /// EA=0;
-									isok=0;
-									Pairing_Feedback_Start(times_s);
-
-	
+					adress=receive_data >>8;
+					adress_H = (receive_data >> 16) & 0xff;
+					adress_L = (receive_data >> 8) & 0xff;
+					Pairing_Address_Touch(adress_H, adress_L);
+					times_s=300;
+					match_success=1;
+					Pairing_Feedback_Start(times_s);
 				}
 				   else if(res_data==Brightness_L||res_data==B_Brightness_L||res_data==F_Brightness_100){
                 	  adress_H_array[0] = 0xff;