diff --git a/vd960DBN/BLE/OnlyUpdateApp_Peripheral/APP/dbn_ble_srv.c b/vd960DBN/BLE/OnlyUpdateApp_Peripheral/APP/dbn_ble_srv.c
index b7f16d5..46dd290 100644
--- a/vd960DBN/BLE/OnlyUpdateApp_Peripheral/APP/dbn_ble_srv.c
+++ b/vd960DBN/BLE/OnlyUpdateApp_Peripheral/APP/dbn_ble_srv.c
@@ -1053,8 +1053,17 @@ void poll_dbn_ble(void)
     }
     if(g_notify_buftemp.flag == 0)
     {
-//        report_sens_acs();
-        g_flag_notify_temp = set_response_to_notify(&g_buf_ble_response, &g_notify_buftemp);
+        static uint8_t _last_resp_flag = 0;
+        uint8_t _pull = set_response_to_notify(&g_buf_ble_response, &g_notify_buftemp);
+        g_flag_notify_temp = _pull;
+        if(g_buf_ble_response.flag != _last_resp_flag)
+        {
+            PRINT("BLE resp flag %d->%d (pull=%d amt=%d seq=%d off=%d)\n",
+                   _last_resp_flag, g_buf_ble_response.flag, _pull,
+                   g_buf_ble_response.pkg_amount, g_buf_ble_response.pkg_seq,
+                   g_buf_ble_response.dat_offset);
+            _last_resp_flag = g_buf_ble_response.flag;
+        }
     }
 }
 
diff --git a/vd960DBN/BLE/OnlyUpdateApp_Peripheral/APP/peripheral.c b/vd960DBN/BLE/OnlyUpdateApp_Peripheral/APP/peripheral.c
index 22f9ee6..4190b21 100644
--- a/vd960DBN/BLE/OnlyUpdateApp_Peripheral/APP/peripheral.c
+++ b/vd960DBN/BLE/OnlyUpdateApp_Peripheral/APP/peripheral.c
@@ -695,6 +695,10 @@ static void performPeriodicTask(void)
     }
     if(g_flag_notify_temp){
         g_flag_notify_temp = 0;
+        PRINT("BLE send: len=%d resp=%d amt=%d seq=%d off=%d\n",
+               g_notify_buftemp.len, g_buf_ble_response.flag,
+               g_buf_ble_response.pkg_amount, g_buf_ble_response.pkg_seq,
+               g_buf_ble_response.dat_offset);
         peripheralChar4Notify(g_notify_buftemp.buf, g_notify_buftemp.len);
         clear_ble_notify_buf(&g_notify_buftemp);
     }