536bacd33d2fa8c211c69b832a6fa098498a5269
2 ******************************************************************************
3 * @file system_stm32f7xx.h
4 * @author MCD Application Team
7 * @brief CMSIS Cortex-M7 Device System Source File for STM32F7xx devices.
8 ******************************************************************************
11 * <h2><center>© COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
13 * Redistribution and use in source and binary forms, with or without modification,
14 * are permitted provided that the following conditions are met:
15 * 1. Redistributions of source code must retain the above copyright notice,
16 * this list of conditions and the following disclaimer.
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18 * this list of conditions and the following disclaimer in the documentation
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24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
25 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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33 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
35 ******************************************************************************
42 /** @addtogroup stm32f7xx_system
47 * @brief Define to prevent recursive inclusion
49 #ifndef __SYSTEM_STM32F7XX_H
50 #define __SYSTEM_STM32F7XX_H
56 /** @addtogroup STM32F7xx_System_Includes
65 /** @addtogroup STM32F7xx_System_Exported_Variables
68 /* The SystemCoreClock variable is updated in three ways:
69 1) by calling CMSIS function SystemCoreClockUpdate()
70 2) by calling HAL API function HAL_RCC_GetSysClockFreq()
71 3) each time HAL_RCC_ClockConfig() is called to configure the system clock frequency
72 Note: If you use this function to configure the system clock; then there
73 is no need to call the 2 first functions listed above, since SystemCoreClock
74 variable is updated automatically.
76 extern uint32_t SystemCoreClock
; /*!< System Clock Frequency (Core Clock) */
78 extern const uint8_t AHBPrescTable
[16]; /*!< AHB prescalers table values */
79 extern const uint8_t APBPrescTable
[8]; /*!< APB prescalers table values */
86 /** @addtogroup STM32F7xx_System_Exported_Constants
94 /** @addtogroup STM32F7xx_System_Exported_Macros
102 /** @addtogroup STM32F7xx_System_Exported_Functions
106 extern void SystemInit(void);
107 extern void SystemCoreClockUpdate(void);
116 #endif /*__SYSTEM_STM32F7XX_H */
125 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/