diff --git a/project/RBcore/drv_interface.c b/project/RBcore/drv_interface.c
index 6c4843f..c187faa 100644
--- a/project/RBcore/drv_interface.c
+++ b/project/RBcore/drv_interface.c
@@ -140,8 +140,11 @@ void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart)
 	}
     else if (huart->Instance == USART3)
     {
-        //UART_RX_IRQHandler(g_ptRS485_2);
-        UART_RX_IRQHandler(g_ptUartCtrl);
+#ifdef USE_PRINT
+    	UART_RX_IRQHandler(g_ptUartCtrl);
+#else
+        UART_RX_IRQHandler(g_ptRS485_2);
+#endif
     }
     else if (huart->Instance == UART4)
 	{
@@ -229,8 +232,11 @@ void SendAll_Task(void *argument)
     {
         rd_ComSendProc(g_ptRS485_1);
         Rd_Delay(1);
-        //rd_ComSendProc(g_ptRS485_2);
+#ifdef USE_PRINT
         rd_ComSendProc(g_ptUartCtrl);
+#else
+        rd_ComSendProc(g_ptRS485_2);
+#endif
         Rd_Delay(1);
         rd_ComSendProc(g_ptRS485_3);
         Rd_Delay(1);