diff --git a/code/application/source/sf_app/code/source/ttyusb/sf_hal_ttyusb.c b/code/application/source/sf_app/code/source/ttyusb/sf_hal_ttyusb.c
index 44714cea7..0f41aeb39 100755
--- a/code/application/source/sf_app/code/source/ttyusb/sf_hal_ttyusb.c
+++ b/code/application/source/sf_app/code/source/ttyusb/sf_hal_ttyusb.c
@@ -252,26 +252,37 @@ static SINT32 hal_ttyusb_read(SINT32 fd, SF_CHAR *recvBuf, SINT32 waitTime)
 static SINT32 hal_ttyusb_read(SINT32 fd, SF_CHAR *recvBuf, SINT32 waitTime)
 {
 	//SF_PDT_PARAM_CFG_S *sfParam = sf_customer_param_get();
-	SINT32 s32ret = 0;
+    SF_TTY_DATA_TYPE_S ttyData = { .waitMs = 1000, .len = 255/*Must wait for OK or error.*/, .lenMax = (GPRS_INFO_LINE_MAX-1), .cmp = "OK", .cmperr = "ERROR", .data = recvBuf};
+	if(fd < 0)
+    {
+        MLOGE(" fd read fail!\n");
+        return SF_FAILURE;
+    }
+    sf_hal_ttyusb2_read_buf(&ttyData);
+    return SF_SUCCESS;
+    #if 0
+    SINT32 s32ret = 0;
 	fd_set read_fds;
 	struct timeval TimeoutVal;
-	//if(waitTime > 0)
-	//	sf_sleep_ms(waitTime);
+	if(waitTime > 0)
+    {
+        sf_sleep_ms(waitTime);
+        // waitTime = 10;//200ms*10=2s
+    }
 	
     if(fd < 0)
     {
         MLOGE(" fd read fail!\n");
         return SF_FAILURE;
     }
-	//while(waitTime--)
+	// while(waitTime--)
     {
 		
-		
 		FD_ZERO(&read_fds);
 		FD_SET(fd, &read_fds);
 	
 		TimeoutVal.tv_sec  = 0;
-		TimeoutVal.tv_usec = 200000;
+		TimeoutVal.tv_usec = 10000;
 
 		s32ret = select(fd + 1, &read_fds, NULL, NULL, &TimeoutVal);
 		if (s32ret > 0) {
@@ -287,17 +298,18 @@ static SINT32 hal_ttyusb_read(SINT32 fd, SF_CHAR *recvBuf, SINT32 waitTime)
 		else if (s32ret < 0) {
 			//MLOGE(" select failed\n");
             return SF_FAILURE;
-			//continue;
+			// continue;
 		} 
 		else if (0 == s32ret) {
 			//MLOGW("FIFO select timeout [%d]\n",waitTime);
             return SF_FAILURE;
-			//continue;
+			// continue;
 		}
 		
 	}
 
 	return SF_SUCCESS;
+    #endif
 }
 #endif