I'm trying to port GRBL 1.1 to the STM32F746 chip. Tell me the solution, thanks.

Revision:
0:f1834a63f7c1
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/stm_usb_fs_lib/inc/usb_int.h	Mon Sep 04 12:03:42 2017 +0000
@@ -0,0 +1,33 @@
+/******************** (C) COPYRIGHT 2010 STMicroelectronics ********************
+* File Name          : usb_int.h
+* Author             : MCD Application Team
+* Version            : V3.2.1
+* Date               : 07/05/2010
+* Description        : Endpoint CTR (Low and High) interrupt's service routines
+*                      prototypes
+********************************************************************************
+* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
+* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME.
+* AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT,
+* INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE
+* CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING
+* INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
+*******************************************************************************/
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __USB_INT_H
+#define __USB_INT_H
+
+/* Includes ------------------------------------------------------------------*/
+/* Exported types ------------------------------------------------------------*/
+/* Exported constants --------------------------------------------------------*/
+/* Exported macro ------------------------------------------------------------*/
+/* Exported functions ------------------------------------------------------- */
+void CTR_LP(void);
+void CTR_HP(void);
+
+/* External variables --------------------------------------------------------*/
+
+#endif /* __USB_INT_H */
+
+/******************* (C) COPYRIGHT 2010 STMicroelectronics *****END OF FILE****/