stm32h7/include/system_stm32h7xx.h

0001 /**
0002   ******************************************************************************
0003   * @file    system_stm32h7xx.h
0004   * @author  MCD Application Team
0005   * @brief   CMSIS Cortex-Mx Device System Source File for STM32H7xx devices.
0006   ******************************************************************************
0007   * @attention
0008   *
0009   * Copyright (c) 2017 STMicroelectronics.
0010   * All rights reserved.
0011   *
0012   * This software is licensed under terms that can be found in the LICENSE file
0013   * in the root directory of this software component.
0014   * If no LICENSE file comes with this software, it is provided AS-IS.
0015   *
0016   ******************************************************************************
0017   */
0018
0019 /** @addtogroup CMSIS
0020   * @{
0021   */
0022
0023 /** @addtogroup stm32h7xx_system
0024   * @{
0025   */
0026
0027 /**
0028   * @brief Define to prevent recursive inclusion
0029   */
0030 #ifndef SYSTEM_STM32H7XX_H
0031 #define SYSTEM_STM32H7XX_H
0032
0033 #ifdef __cplusplus
0034  extern "C" {
0035 #endif
0036
0037 /** @addtogroup STM32H7xx_System_Includes
0038   * @{
0039   */
0040
0041 /**
0042   * @}
0043   */
0044
0045
0046 /** @addtogroup STM32H7xx_System_Exported_types
0047   * @{
0048   */
0049   /* This variable is updated in three ways:
0050       1) by calling CMSIS function SystemCoreClockUpdate()
0051       2) by calling HAL API function HAL_RCC_GetSysClockFreq()
0052       3) each time HAL_RCC_ClockConfig() is called to configure the system clock frequency
0053          Note: If you use this function to configure the system clock; then there
0054                is no need to call the 2 first functions listed above, since SystemCoreClock
0055                variable is updated automatically.
0056   */
0057 extern uint32_t SystemCoreClock;             /*!< System Domain1 Clock Frequency  */
0058 extern uint32_t SystemD2Clock;               /*!< System Domain2 Clock Frequency  */
0059 extern const  uint8_t D1CorePrescTable[16] ; /*!< D1CorePrescTable prescalers table values */
0060
0061 /**
0062   * @}
0063   */
0064
0065 /** @addtogroup STM32H7xx_System_Exported_Constants
0066   * @{
0067   */
0068
0069 /**
0070   * @}
0071   */
0072
0073 /** @addtogroup STM32H7xx_System_Exported_Macros
0074   * @{
0075   */
0076
0077 /**
0078   * @}
0079   */
0080
0081 /** @addtogroup STM32H7xx_System_Exported_Functions
0082   * @{
0083   */
0084
0085 extern void SystemInit(void);
0086 extern void SystemCoreClockUpdate(void);
0087 /**
0088   * @}
0089   */
0090
0091 #ifdef __cplusplus
0092 }
0093 #endif
0094
0095 #endif /* SYSTEM_STM32H7XX_H */
0096
0097 /**
0098   * @}
0099   */
0100
0101 /**
0102   * @}
0103   */