| 1 | /**
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| 2 | ******************************************************************************
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| 3 | * @file system_stm32n6xx.h
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| 4 | * @author MCD Application Team
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| 5 | * @brief CMSIS Cortex-M55 Device System Source File for STM32N6xx devices.
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| 6 | ******************************************************************************
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| 7 | * @attention
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| 8 | *
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| 9 | * Copyright (c) 2023 STMicroelectronics.
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| 10 | * All rights reserved.
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| 11 | *
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| 12 | * This software is licensed under terms that can be found in the LICENSE file
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| 13 | * in the root directory of this software component.
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| 14 | * If no LICENSE file comes with this software, it is provided AS-IS.
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| 15 | *
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| 16 | ******************************************************************************
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| 17 | */
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| 18 |
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| 19 | /** @addtogroup CMSIS
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| 20 | * @{
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| 21 | */
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| 22 |
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| 23 | /** @addtogroup STM32N6xx_system
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| 24 | * @{
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| 25 | */
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| 26 |
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| 27 | #ifndef SYSTEM_STM32N6XX_H
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| 28 | #define SYSTEM_STM32N6XX_H
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| 29 |
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| 30 | #ifdef __cplusplus
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| 31 | extern "C" {
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| 32 | #endif /* __cplusplus */
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| 33 |
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| 34 | /** @addtogroup STM32N6xx_System_Includes
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| 35 | * @{
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| 36 | */
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| 37 | #include <stdint.h>
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| 38 | /**
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| 39 | * @}
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| 40 | */
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| 41 |
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| 42 | /** @addtogroup STM32N6xx_System_Exported_Variables
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| 43 | * @{
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| 44 | */
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| 45 | /* The SystemCoreClock variable is updated in three ways:
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| 46 | 1) by calling CMSIS function SystemCoreClockUpdate()
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| 47 | 2) by calling HAL API function HAL_RCC_GetSysClockFreq()
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| 48 | 3) each time HAL_RCC_ClockConfig() is called to configure the system clock frequency
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| 49 | Note: If you use this function to configure the system clock; then there
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| 50 | is no need to call the 2 first functions listed above, since SystemCoreClock
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| 51 | variable is updated automatically.
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| 52 | */
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| 53 | extern uint32_t SystemCoreClock; /*!< System Clock Frequency (Core Clock) */
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| 54 | /**
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| 55 | * @}
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| 56 | */
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| 57 |
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| 58 | /** @addtogroup STM32N6xx_System_Exported_Functions
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| 59 | * @{
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| 60 | */
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| 61 |
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| 62 | /**
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| 63 | \brief Setup the microcontroller system.
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| 64 |
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| 65 | Initialize the System and update the SystemCoreClock variable.
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| 66 | */
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| 67 | extern void SystemInit (void);
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| 68 |
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| 69 |
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| 70 | /**
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| 71 | \brief Update SystemCoreClock variable.
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| 72 |
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| 73 | Updates the SystemCoreClock with current core Clock retrieved from cpu registers.
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| 74 | */
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| 75 | extern void SystemCoreClockUpdate (void);
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| 76 |
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| 77 |
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| 78 | /**
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| 79 | \brief Update SystemCoreClock variable from secure application and return its value
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| 80 | when security is implemented in the system (Non-secure callable function).
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| 81 |
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| 82 | Returns the SystemCoreClock value with current core Clock retrieved from cpu registers.
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| 83 | */
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| 84 | extern uint32_t SECURE_SystemCoreClockUpdate(void);
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| 85 |
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| 86 | /**
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| 87 | * @}
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| 88 | */
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| 89 |
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| 90 | #ifdef __cplusplus
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| 91 | }
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| 92 | #endif /* __cplusplus */
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| 93 |
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| 94 | #endif /* SYSTEM_STM32N6XX_H */
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| 95 |
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| 96 | /**
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| 97 | * @}
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| 98 | */
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| 99 |
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| 100 | /**
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| 101 | * @}
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| 102 | */
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| 103 |
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