diff --git a/Gambal/APP/usart1.c b/Gambal/APP/usart1.c
index eac2a23..20dab26 100644
--- a/Gambal/APP/usart1.c
+++ b/Gambal/APP/usart1.c
@@ -40,9 +40,9 @@ unsigned short USART_RX_STA=0;       //
 //}
 
 u32 RX_CNT = 0;
-u8 f;
-u8 x[12];
-u8 y[12];
+u8 Y_index;
+u8 G_RX_Xerror[12];
+u8 G_RX_Yerror[12];
 void USART1_IRQHandler(void)
 {
 	unsigned char res;
@@ -53,15 +53,15 @@ void USART1_IRQHandler(void)
 		if(res != 0x0d)
 		{
 			USART_RX_BUF[RX_CNT] = res;
-			if(res == 'y')  f = RX_CNT;
+			if(res == 'y')  Y_index = Y_index;
 			USART_RX_STA = 1;
 			RX_CNT++;
 		}
 		
 		else
 		{
-			memcpy(x,USART_RX_BUF,f+1);
-			memcpy(y,USART_RX_BUF+f+1,30-f-1);
+			memcpy(G_RX_Xerror,USART_RX_BUF,Y_index+1);
+			memcpy(G_RX_Yerror,USART_RX_BUF+Y_index+1,30-Y_index-1);
 			memset(USART_RX_BUF,0,30);
 			RX_CNT = 0;
 		}
diff --git a/Gambal/APP/usart1.h b/Gambal/APP/usart1.h
index a07ab19..f0d412c 100644
--- a/Gambal/APP/usart1.h
+++ b/Gambal/APP/usart1.h
@@ -7,13 +7,11 @@
 #define  RX_485  GPIO_ResetBits(GPIOA,GPIO_Pin_8);         
 #define  TX_485  GPIO_SetBits(GPIOA,GPIO_Pin_8);
 
-
-extern float error;
 extern u8 USART_RX_BUF[30];
 //接收到的数据长度		  
 extern unsigned short USART_RX_STA;       //接收状态标志  
-extern u8 x[12];
-extern u8 y[12];
+extern u8 G_RX_Xerror[12];
+extern u8 G_RX_Yerror[12];
 
 void usart1_Init(u32 bound);
 
diff --git a/Gambal/User/main.c b/Gambal/User/main.c
index e48a661..9ad8765 100644
--- a/Gambal/User/main.c
+++ b/Gambal/User/main.c
@@ -129,9 +129,9 @@ int main()
 		
 		
 		PID_ZT(target);
-//		target =atof((const char *)(x));
+//		target =atof((const char *)(G_RX_Xerror));
 
-		target = 0 - atof((const char *)(y));
+		target = 0 - atof((const char *)(G_RX_Yerror));
 //		target =LPF_ZT(target);		
 //	angle_close_loop(3.8);
 //		close_loop(target);