1 /**
2   ******************************************************************************
3   * @file    system_stm32f7xx.h
4   * @author  MCD Application Team
5   * @brief   CMSIS Cortex-M7 Device System Source File for STM32F7xx devices.
6   ******************************************************************************
7   * @attention
8   *
9   * Copyright (c) 2016 STMicroelectronics.
10   * All rights reserved.
11   *
12   * This software is licensed under terms that can be found in the LICENSE file
13   * in the root directory of this software component.
14   * If no LICENSE file comes with this software, it is provided AS-IS.
15   *
16   ******************************************************************************
17   */
18 
19 /** @addtogroup CMSIS
20   * @{
21   */
22 
23 /** @addtogroup stm32f7xx_system
24   * @{
25   */
26 
27 /**
28   * @brief Define to prevent recursive inclusion
29   */
30 #ifndef __SYSTEM_STM32F7XX_H
31 #define __SYSTEM_STM32F7XX_H
32 
33 #ifdef __cplusplus
34  extern "C" {
35 #endif
36 
37 /** @addtogroup STM32F7xx_System_Includes
38   * @{
39   */
40 
41 /**
42   * @}
43   */
44 
45 
46 /** @addtogroup STM32F7xx_System_Exported_Variables
47   * @{
48   */
49   /* The SystemCoreClock variable is updated in three ways:
50       1) by calling CMSIS function SystemCoreClockUpdate()
51       2) by calling HAL API function HAL_RCC_GetSysClockFreq()
52       3) each time HAL_RCC_ClockConfig() is called to configure the system clock frequency
53          Note: If you use this function to configure the system clock; then there
54                is no need to call the 2 first functions listed above, since SystemCoreClock
55                variable is updated automatically.
56     */
57 extern uint32_t SystemCoreClock;          /*!< System Clock Frequency (Core Clock) */
58 
59 extern const uint8_t  AHBPrescTable[16];    /*!< AHB prescalers table values */
60 extern const uint8_t  APBPrescTable[8];     /*!< APB prescalers table values */
61 
62 
63 /**
64   * @}
65   */
66 
67 /** @addtogroup STM32F7xx_System_Exported_Constants
68   * @{
69   */
70 
71 /**
72   * @}
73   */
74 
75 /** @addtogroup STM32F7xx_System_Exported_Macros
76   * @{
77   */
78 
79 /**
80   * @}
81   */
82 
83 /** @addtogroup STM32F7xx_System_Exported_Functions
84   * @{
85   */
86 
87 extern void SystemInit(void);
88 extern void SystemCoreClockUpdate(void);
89 /**
90   * @}
91   */
92 
93 #ifdef __cplusplus
94 }
95 #endif
96 
97 #endif /*__SYSTEM_STM32F7XX_H */
98 
99 /**
100   * @}
101   */
102 
103 /**
104   * @}
105   */
106