mirror of https://github.com/ARMmbed/mbed-os.git
STM32U5 CMSIS update
parent
3a1eb190d1
commit
69c7cb4d59
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/**
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******************************************************************************
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* @file partition_stm32u5xx.h
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* @author MCD Application Team
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* @brief CMSIS STM32U5xx Device Header File for Initial Setup for
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* Secure / Non-Secure Zones based on CMSIS CORE V5.4.0
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*
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* The file is included in system_stm32u5xx_s.c in secure application.
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* It includes the configuration section that allows to select the
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* STM32U5xx device partitioning file for system core secure attributes
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* and interrupt secure and non-secure assignment.
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*
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******************************************************************************
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* @attention
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*
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* Copyright (c) 2021 STMicroelectronics.
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* All rights reserved.
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*
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* This software is licensed under terms that can be found in the LICENSE file
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* in the root directory of this software component.
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* If no LICENSE file comes with this software, it is provided AS-IS.
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*
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******************************************************************************
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*/
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/** @addtogroup CMSIS
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* @{
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*/
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/** @addtogroup stm32u5xx
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* @{
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*/
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#ifndef PARTITION_STM32U5XX_H
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#define PARTITION_STM32U5XX_H
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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/** @addtogroup Secure_configuration_section
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* @{
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*/
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#if defined(STM32U575xx)
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#include "partition_stm32u575xx.h"
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#elif defined(STM32U585xx)
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#include "partition_stm32u585xx.h"
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#else
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#error "Please select first the target STM32U5xx device used in your application (in stm32u5xx.h file)"
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#endif
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#endif /* PARTITION_STM32U5XX_H */
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/**
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* @}
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*/
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/**
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* @}
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*/
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@ -222,7 +222,7 @@ typedef enum
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#define __VTOR_PRESENT 1U /* VTOR present */
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#define __VTOR_PRESENT 1U /* VTOR present */
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#define __NVIC_PRIO_BITS 4U /* Number of Bits used for Priority Levels */
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#define __NVIC_PRIO_BITS 4U /* Number of Bits used for Priority Levels */
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#define __Vendor_SysTickConfig 0U /* Set to 1 if different SysTick Config is used */
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#define __Vendor_SysTickConfig 0U /* Set to 1 if different SysTick Config is used */
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#define __FPU_PRESENT 1 /* FPU present */
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#define __FPU_PRESENT 1U /* FPU present */
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#define __DSP_PRESENT 1U /* DSP extension present */
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#define __DSP_PRESENT 1U /* DSP extension present */
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/** @} */ /* End of group Configuration_of_CMSIS */
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/** @} */ /* End of group Configuration_of_CMSIS */
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/**
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******************************************************************************
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* @file system_stm32u5xx_ns.c
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* @author MCD Application Team
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* @brief CMSIS Cortex-M33 Device Peripheral Access Layer System Source File
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* to be used in non-secure application when the system implements
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* the TrustZone-M security.
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*
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* This file provides two functions and one global variable to be called from
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* user application:
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* - SystemInit(): This function is called at non-secure startup before
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* branch to non-secure main program.
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* This call is made inside the "startup_stm32u5xx.s" file.
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*
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* - SystemCoreClock variable: Contains the core clock (HCLK), it can be used
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* by the user application to setup the SysTick
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* timer or configure other parameters.
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*
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* - SystemCoreClockUpdate(): Updates the variable SystemCoreClock and must
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* be called whenever the core clock is changed
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* during program execution.
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*
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* After each device reset the MSI (4 MHz) is used as system clock source.
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* Then SystemInit() function is called, in "startup_stm32u5xx.s" file, to
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* configure the system clock before to branch to main secure program.
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* Later, when non-secure SystemInit() function is called, in "startup_stm32u5xx.s"
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* file, the system clock may have been updated from reset value by the main
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* secure program.
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*
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******************************************************************************
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* @attention
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*
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* Copyright (c) 2021 STMicroelectronics.
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* All rights reserved.
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*
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* This software is licensed under terms that can be found in the LICENSE file
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* in the root directory of this software component.
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* If no LICENSE file comes with this software, it is provided AS-IS.
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*
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******************************************************************************
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*/
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/** @addtogroup CMSIS
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* @{
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*/
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/** @addtogroup STM32U5xx_system
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* @{
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*/
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/** @addtogroup STM32U5xx_System_Private_Includes
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* @{
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*/
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#include "stm32u5xx.h"
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/**
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* @}
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*/
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/** @addtogroup STM32U5xx_System_Private_TypesDefinitions
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* @{
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*/
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/**
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* @}
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*/
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/** @addtogroup STM32U5xx_System_Private_Defines
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* @{
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*/
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#if !defined (HSE_VALUE)
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#define HSE_VALUE 16000000U /*!< Value of the External oscillator in Hz */
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#endif /* HSE_VALUE */
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#if !defined (MSI_VALUE)
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#define MSI_VALUE 4000000U /*!< Value of the Internal oscillator in Hz*/
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#endif /* MSI_VALUE */
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#if !defined (HSI_VALUE)
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#define HSI_VALUE 16000000U /*!< Value of the Internal oscillator in Hz*/
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#endif /* HSI_VALUE */
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/**
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* @}
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*/
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/** @addtogroup STM32U5xx_System_Private_Macros
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* @{
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*/
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/**
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* @}
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*/
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/** @addtogroup STM32U5xx_System_Private_Variables
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* @{
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*/
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/* The SystemCoreClock variable is updated in three ways:
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1) by calling CMSIS function SystemCoreClockUpdate()
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2) by calling HAL API function HAL_RCC_GetHCLKFreq()
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3) each time HAL_RCC_ClockConfig() is called to configure the system clock frequency
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Note: If you use this function to configure the system clock; then there
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is no need to call the 2 first functions listed above, since SystemCoreClock
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variable is updated automatically.
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*/
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uint32_t SystemCoreClock = 4000000U;
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const uint8_t AHBPrescTable[16] = {0U, 0U, 0U, 0U, 0U, 0U, 0U, 0U, 1U, 2U, 3U, 4U, 6U, 7U, 8U, 9U};
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const uint8_t APBPrescTable[8] = {0U, 0U, 0U, 0U, 1U, 2U, 3U, 4U};
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const uint32_t MSIRangeTable[16] = {48000000U,24000000U,16000000U,12000000U, 4000000U, 2000000U, 1500000U,\
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1000000U, 3072000U, 1536000U,1024000U, 768000U, 400000U, 200000U, 150000U, 100000U};
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/**
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* @}
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*/
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/** @addtogroup STM32U5xx_System_Private_FunctionPrototypes
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* @{
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*/
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/**
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* @}
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*/
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/** @addtogroup STM32U5xx_System_Private_Functions
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* @{
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*/
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/**
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* @brief Setup the microcontroller system.
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* @retval None
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*/
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__WEAK void SystemInit(void)
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{
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#include "nvic_addr.h" // MBED
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SCB->VTOR = NVIC_FLASH_VECTOR_ADDRESS; // MBED
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/* Nothing done in non-secure */
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/* Non-secure main application shall call SystemCoreClockUpdate() to update */
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/* the SystemCoreClock variable to insure non-secure application relies on */
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/* the initial clock reference set by secure application. */
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}
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/**
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* @brief Update SystemCoreClock variable according to Clock Register Values.
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* The SystemCoreClock variable contains the core clock (HCLK), it can
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* be used by the user application to setup the SysTick timer or configure
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* other parameters.
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*
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* @note From the non-secure application, the SystemCoreClock value is
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* retrieved from the secure domain via a Non-Secure Callable function
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* since the RCC peripheral may be protected with security attributes
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* that prevent to compute the SystemCoreClock variable from the RCC
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* peripheral registers.
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*
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* @note Each time the core clock (HCLK) changes, this function must be called
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* to update SystemCoreClock variable value. Otherwise, any configuration
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* based on this variable will be incorrect.
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*
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* @note - The system frequency computed by this function is not the real
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* frequency in the chip. It is calculated based on the predefined
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* constant and the selected clock source:
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*
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* - If SYSCLK source is MSI, SystemCoreClock will contain the MSI_VALUE(*)
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*
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* - If SYSCLK source is HSI, SystemCoreClock will contain the HSI_VALUE(**)
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*
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* - If SYSCLK source is HSE, SystemCoreClock will contain the HSE_VALUE(***)
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*
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* - If SYSCLK source is PLL, SystemCoreClock will contain the HSE_VALUE(***)
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* or HSI_VALUE(*) or MSI_VALUE(*) multiplied/divided by the PLL factors.
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*
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* (*) MSI_VALUE is a constant defined in stm32u5xx_hal.h file (default value
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* 4 MHz) but the real value may vary depending on the variations
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* in voltage and temperature.
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*
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* (**) HSI_VALUE is a constant defined in stm32u5xx_hal.h file (default value
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* 16 MHz) but the real value may vary depending on the variations
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* in voltage and temperature.
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*
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* (***) HSE_VALUE is a constant defined in stm32u5xx_hal.h file (default value
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* 8 MHz), user has to ensure that HSE_VALUE is same as the real
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* frequency of the crystal used. Otherwise, this function may
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* have wrong result.
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*
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* - The result of this function could be not correct when using fractional
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* value for HSE crystal.
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*
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* @retval None
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*/
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void SystemCoreClockUpdate(void)
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{
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/* Get the SystemCoreClock value from the secure domain */
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SystemCoreClock = SECURE_SystemCoreClockUpdate();
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}
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/**
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* @}
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*/
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/**
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* @}
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*/
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/**
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* @}
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*/
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/**
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******************************************************************************
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* @file system_stm32u5xx_s.c
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* @author MCD Application Team
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* @brief CMSIS Cortex-M33 Device Peripheral Access Layer System Source File
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* to be used in secure application when the system implements
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* the TrustZone-M security.
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*
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* This file provides two functions and one global variable to be called from
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* user application:
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* - SystemInit(): This function is called at secure startup just after reset
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* and before branch to secure main program.
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* This call is made inside the "startup_stm32u5xx.s" file.
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*
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* - SystemCoreClock variable: Contains the core clock (HCLK), it can be used
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* by the user application to setup the SysTick
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* timer or configure other parameters.
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*
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* - SystemCoreClockUpdate(): Updates the variable SystemCoreClock and must
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* be called whenever the core clock is changed
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* during program execution.
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*
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* - SECURE_SystemCoreClockUpdate(): Non-secure callable function to update
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* the variable SystemCoreClock and return
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* its value to the non-secure calling
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* application. It must be called whenever
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* the core clock is changed during program
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* execution.
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*
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* After each device reset the MSI (4 MHz) is used as system clock source.
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* Then SystemInit() function is called, in "startup_stm32u5xx.s" file, to
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* configure the system clock before to branch to main program.
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*
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* This file configures the system clock as follows:
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*=============================================================================
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*-----------------------------------------------------------------------------
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* System Clock source | MSI
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*-----------------------------------------------------------------------------
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* SYSCLK(Hz) | 4000000
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*-----------------------------------------------------------------------------
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* HCLK(Hz) | 4000000
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*-----------------------------------------------------------------------------
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* AHB Prescaler | 1
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*-----------------------------------------------------------------------------
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* APB1 Prescaler | 1
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*-----------------------------------------------------------------------------
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* APB2 Prescaler | 1
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*-----------------------------------------------------------------------------
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* APB3 Prescaler | 1
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*-----------------------------------------------------------------------------
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* PLL1_SRC | No clock
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*-----------------------------------------------------------------------------
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* PLL1_M | 1
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*-----------------------------------------------------------------------------
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* PLL1_N | 8
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*-----------------------------------------------------------------------------
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* PLL1_P | 7
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*-----------------------------------------------------------------------------
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* PLL1_Q | 2
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*-----------------------------------------------------------------------------
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* PLL1_R | 2
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*-----------------------------------------------------------------------------
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* PLL2_SRC | NA
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*-----------------------------------------------------------------------------
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* PLL2_M | NA
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*-----------------------------------------------------------------------------
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* PLL2_N | NA
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*-----------------------------------------------------------------------------
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* PLL2_P | NA
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*-----------------------------------------------------------------------------
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* PLL2_Q | NA
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*-----------------------------------------------------------------------------
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* PLL2_R | NA
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*-----------------------------------------------------------------------------
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* PLL3_SRC | NA
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*-----------------------------------------------------------------------------
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* PLL3_M | NA
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*-----------------------------------------------------------------------------
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* PLL3_N | NA
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*-----------------------------------------------------------------------------
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* PLL3_P | NA
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*-----------------------------------------------------------------------------
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* Require 48MHz for USB FS, | Disabled
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* SDIO and RNG clock |
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*-----------------------------------------------------------------------------
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*=============================================================================
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******************************************************************************
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* @attention
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*
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* Copyright (c) 2021 STMicroelectronics.
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* All rights reserved.
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*
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* This software is licensed under terms that can be found in the LICENSE file
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* in the root directory of this software component.
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* If no LICENSE file comes with this software, it is provided AS-IS.
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*
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******************************************************************************
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*/
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/** @addtogroup CMSIS
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* @{
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*/
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/** @addtogroup STM32U5xx_system
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* @{
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*/
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/** @addtogroup STM32U5xx_System_Private_Includes
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* @{
|
|
||||||
*/
|
|
||||||
|
|
||||||
#include "stm32u5xx.h"
|
|
||||||
#include "partition_stm32u5xx.h" /* Trustzone-M core secure attributes */
|
|
||||||
#include <math.h>
|
|
||||||
|
|
||||||
/**
|
|
||||||
* @}
|
|
||||||
*/
|
|
||||||
|
|
||||||
/** @addtogroup STM32U5xx_System_Private_TypesDefinitions
|
|
||||||
* @{
|
|
||||||
*/
|
|
||||||
|
|
||||||
#if defined ( __ICCARM__ )
|
|
||||||
# define CMSE_NS_ENTRY __cmse_nonsecure_entry
|
|
||||||
#else
|
|
||||||
# define CMSE_NS_ENTRY __attribute((cmse_nonsecure_entry))
|
|
||||||
#endif
|
|
||||||
/**
|
|
||||||
* @}
|
|
||||||
*/
|
|
||||||
|
|
||||||
/** @addtogroup STM32U5xx_System_Private_Defines
|
|
||||||
* @{
|
|
||||||
*/
|
|
||||||
#if !defined (HSE_VALUE)
|
|
||||||
#define HSE_VALUE 16000000U /*!< Value of the External oscillator in Hz */
|
|
||||||
#endif /* HSE_VALUE */
|
|
||||||
|
|
||||||
#if !defined (MSI_VALUE)
|
|
||||||
#define MSI_VALUE 4000000U /*!< Value of the Internal oscillator in Hz*/
|
|
||||||
#endif /* MSI_VALUE */
|
|
||||||
|
|
||||||
#if !defined (HSI_VALUE)
|
|
||||||
#define HSI_VALUE 16000000U /*!< Value of the Internal oscillator in Hz*/
|
|
||||||
#endif /* HSI_VALUE */
|
|
||||||
|
|
||||||
/************************* Miscellaneous Configuration ************************/
|
|
||||||
/*!< Uncomment the following line if you need to relocate your vector Table in
|
|
||||||
Internal SRAM. */
|
|
||||||
/* #define VECT_TAB_SRAM */
|
|
||||||
#define VECT_TAB_OFFSET 0x00000000UL /*!< Vector Table base offset field.
|
|
||||||
This value must be a multiple of 0x200. */
|
|
||||||
/******************************************************************************/
|
|
||||||
/**
|
|
||||||
* @}
|
|
||||||
*/
|
|
||||||
|
|
||||||
/** @addtogroup STM32U5xx_System_Private_Macros
|
|
||||||
* @{
|
|
||||||
*/
|
|
||||||
|
|
||||||
/**
|
|
||||||
* @}
|
|
||||||
*/
|
|
||||||
|
|
||||||
/** @addtogroup STM32U5xx_System_Private_Variables
|
|
||||||
* @{
|
|
||||||
*/
|
|
||||||
/* The SystemCoreClock variable is updated in three ways:
|
|
||||||
1) by calling CMSIS function SystemCoreClockUpdate()
|
|
||||||
2) by calling HAL API function HAL_RCC_GetHCLKFreq()
|
|
||||||
3) each time HAL_RCC_ClockConfig() is called to configure the system clock frequency
|
|
||||||
Note: If you use this function to configure the system clock; then there
|
|
||||||
is no need to call the 2 first functions listed above, since SystemCoreClock
|
|
||||||
variable is updated automatically.
|
|
||||||
*/
|
|
||||||
uint32_t SystemCoreClock = 4000000U;
|
|
||||||
|
|
||||||
const uint8_t AHBPrescTable[16] = {0U, 0U, 0U, 0U, 0U, 0U, 0U, 0U, 1U, 2U, 3U, 4U, 6U, 7U, 8U, 9U};
|
|
||||||
const uint8_t APBPrescTable[8] = {0U, 0U, 0U, 0U, 1U, 2U, 3U, 4U};
|
|
||||||
const uint32_t MSIRangeTable[16] = {48000000U,24000000U,16000000U,12000000U, 4000000U, 2000000U, 1500000U,\
|
|
||||||
1000000U, 3072000U, 1536000U,1024000U, 768000U, 400000U, 200000U, 150000U, 100000U};
|
|
||||||
/**
|
|
||||||
* @}
|
|
||||||
*/
|
|
||||||
|
|
||||||
/** @addtogroup STM32U5xx_System_Private_FunctionPrototypes
|
|
||||||
* @{
|
|
||||||
*/
|
|
||||||
|
|
||||||
/**
|
|
||||||
* @}
|
|
||||||
*/
|
|
||||||
|
|
||||||
/** @addtogroup STM32U5xx_System_Private_Functions
|
|
||||||
* @{
|
|
||||||
*/
|
|
||||||
|
|
||||||
/**
|
|
||||||
* @brief Setup the microcontroller system.
|
|
||||||
* @param None
|
|
||||||
* @retval None
|
|
||||||
*/
|
|
||||||
|
|
||||||
__WEAK void SystemInit(void)
|
|
||||||
{
|
|
||||||
#include "nvic_addr.h" // MBED
|
|
||||||
SCB->VTOR = NVIC_FLASH_VECTOR_ADDRESS; // MBED
|
|
||||||
/* SAU/IDAU, FPU and Interrupts secure/non-secure allocation settings */
|
|
||||||
TZ_SAU_Setup();
|
|
||||||
|
|
||||||
/* FPU settings ------------------------------------------------------------*/
|
|
||||||
#if (__FPU_PRESENT == 1) && (__FPU_USED == 1)
|
|
||||||
SCB->CPACR |= ((3UL << 20U)|(3UL << 22U)); /* set CP10 and CP11 Full Access */
|
|
||||||
|
|
||||||
SCB_NS->CPACR |= ((3UL << 20U)|(3UL << 22U)); /* set CP10 and CP11 Full Access */
|
|
||||||
#endif
|
|
||||||
|
|
||||||
/* Reset the RCC clock configuration to the default reset state ------------*/
|
|
||||||
/* Set MSION bit */
|
|
||||||
RCC->CR = RCC_CR_MSISON;
|
|
||||||
|
|
||||||
/* Reset CFGR register */
|
|
||||||
RCC->CFGR1 = 0U;
|
|
||||||
RCC->CFGR2 = 0U;
|
|
||||||
RCC->CFGR3 = 0U;
|
|
||||||
|
|
||||||
/* Reset HSEON, CSSON , HSION, PLLxON bits */
|
|
||||||
RCC->CR &= ~(RCC_CR_HSEON | RCC_CR_CSSON | RCC_CR_PLL1ON | RCC_CR_PLL2ON | RCC_CR_PLL3ON);
|
|
||||||
|
|
||||||
/* Reset PLLCFGR register */
|
|
||||||
RCC->PLL1CFGR = 0U;
|
|
||||||
|
|
||||||
/* Reset HSEBYP bit */
|
|
||||||
RCC->CR &= ~(RCC_CR_HSEBYP);
|
|
||||||
|
|
||||||
/* Disable all interrupts */
|
|
||||||
RCC->CIER = 0U;
|
|
||||||
|
|
||||||
/* Configure the Vector Table location add offset address ------------------*/
|
|
||||||
#ifdef VECT_TAB_SRAM
|
|
||||||
#else
|
|
||||||
#endif
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* @brief Update SystemCoreClock variable according to Clock Register Values.
|
|
||||||
* The SystemCoreClock variable contains the core clock (HCLK), it can
|
|
||||||
* be used by the user application to setup the SysTick timer or configure
|
|
||||||
* other parameters.
|
|
||||||
*
|
|
||||||
* @note Depending on secure or non-secure compilation, the adequate RCC peripheral
|
|
||||||
* memory are is accessed thanks to RCC alias defined in stm32u5xxxx.h device file
|
|
||||||
* so either from RCC_S peripheral register mapped memory in secure or from
|
|
||||||
* RCC_NS peripheral register mapped memory in non-secure.
|
|
||||||
*
|
|
||||||
* @note Each time the core clock (HCLK) changes, this function must be called
|
|
||||||
* to update SystemCoreClock variable value. Otherwise, any configuration
|
|
||||||
* based on this variable will be incorrect.
|
|
||||||
*
|
|
||||||
* @note - The system frequency computed by this function is not the real
|
|
||||||
* frequency in the chip. It is calculated based on the predefined
|
|
||||||
* constant and the selected clock source:
|
|
||||||
*
|
|
||||||
* - If SYSCLK source is MSI, SystemCoreClock will contain the MSI_VALUE(*)
|
|
||||||
*
|
|
||||||
* - If SYSCLK source is HSI, SystemCoreClock will contain the HSI_VALUE(**)
|
|
||||||
*
|
|
||||||
* - If SYSCLK source is HSE, SystemCoreClock will contain the HSE_VALUE(***)
|
|
||||||
*
|
|
||||||
* - If SYSCLK source is PLL, SystemCoreClock will contain the HSE_VALUE(***)
|
|
||||||
* or HSI_VALUE(*) or MSI_VALUE(*) multiplied/divided by the PLL factors.
|
|
||||||
*
|
|
||||||
* (*) MSI_VALUE is a constant defined in stm32u5xx_hal.h file (default value
|
|
||||||
* 4 MHz) but the real value may vary depending on the variations
|
|
||||||
* in voltage and temperature.
|
|
||||||
*
|
|
||||||
* (**) HSI_VALUE is a constant defined in stm32u5xx_hal.h file (default value
|
|
||||||
* 16 MHz) but the real value may vary depending on the variations
|
|
||||||
* in voltage and temperature.
|
|
||||||
*
|
|
||||||
* (***) HSE_VALUE is a constant defined in stm32u5xx_hal.h file (default value
|
|
||||||
* 8 MHz), user has to ensure that HSE_VALUE is same as the real
|
|
||||||
* frequency of the crystal used. Otherwise, this function may
|
|
||||||
* have wrong result.
|
|
||||||
*
|
|
||||||
* - The result of this function could be not correct when using fractional
|
|
||||||
* value for HSE crystal.
|
|
||||||
*
|
|
||||||
* @param None
|
|
||||||
* @retval None
|
|
||||||
*/
|
|
||||||
void SystemCoreClockUpdate(void)
|
|
||||||
{
|
|
||||||
uint32_t pllr, pllsource, pllm , tmp, pllfracen, msirange;
|
|
||||||
float_t fracn1, pllvco;
|
|
||||||
|
|
||||||
/* Get MSI Range frequency--------------------------------------------------*/
|
|
||||||
if(READ_BIT(RCC->ICSCR1, RCC_ICSCR1_MSIRGSEL) == 0U)
|
|
||||||
{
|
|
||||||
/* MSISRANGE from RCC_CSR applies */
|
|
||||||
msirange = (RCC->CSR & RCC_CSR_MSISSRANGE) >> RCC_CSR_MSISSRANGE_Pos;
|
|
||||||
}
|
|
||||||
else
|
|
||||||
{
|
|
||||||
/* MSIRANGE from RCC_CR applies */
|
|
||||||
msirange = (RCC->ICSCR1 & RCC_ICSCR1_MSISRANGE) >> RCC_ICSCR1_MSISRANGE_Pos;
|
|
||||||
}
|
|
||||||
|
|
||||||
/*MSI frequency range in HZ*/
|
|
||||||
msirange = MSIRangeTable[msirange];
|
|
||||||
|
|
||||||
/* Get SYSCLK source -------------------------------------------------------*/
|
|
||||||
switch (RCC->CFGR1 & RCC_CFGR1_SWS)
|
|
||||||
{
|
|
||||||
case 0x00: /* MSI used as system clock source */
|
|
||||||
SystemCoreClock = msirange;
|
|
||||||
break;
|
|
||||||
|
|
||||||
case 0x04: /* HSI used as system clock source */
|
|
||||||
SystemCoreClock = HSI_VALUE;
|
|
||||||
break;
|
|
||||||
|
|
||||||
case 0x08: /* HSE used as system clock source */
|
|
||||||
SystemCoreClock = HSE_VALUE;
|
|
||||||
break;
|
|
||||||
|
|
||||||
case 0x0C: /* PLL used as system clock source */
|
|
||||||
/* PLL_VCO = (HSE_VALUE or HSI_VALUE or MSI_VALUE/ PLLM) * PLLN
|
|
||||||
SYSCLK = PLL_VCO / PLLR
|
|
||||||
*/
|
|
||||||
pllsource = (RCC->PLL1CFGR & RCC_PLL1CFGR_PLL1SRC);
|
|
||||||
pllm = ((RCC->PLL1CFGR & RCC_PLL1CFGR_PLL1M)>> RCC_PLL1CFGR_PLL1M_Pos) + 1U;
|
|
||||||
pllfracen = ((RCC->PLL1CFGR & RCC_PLL1CFGR_PLL1FRACEN)>>RCC_PLL1CFGR_PLL1FRACEN_Pos);
|
|
||||||
fracn1 = (float_t)(uint32_t)(pllfracen* ((RCC->PLL1FRACR & RCC_PLL1FRACR_PLL1FRACN)>> RCC_PLL1FRACR_PLL1FRACN_Pos));
|
|
||||||
|
|
||||||
switch (pllsource)
|
|
||||||
{
|
|
||||||
case 0x00: /* No clock sent to PLL*/
|
|
||||||
pllvco = (float_t)0U;
|
|
||||||
break;
|
|
||||||
|
|
||||||
case 0x02: /* HSI used as PLL clock source */
|
|
||||||
pllvco = ((float_t)HSI_VALUE / (float_t)pllm);
|
|
||||||
break;
|
|
||||||
|
|
||||||
case 0x03: /* HSE used as PLL clock source */
|
|
||||||
pllvco = ((float_t)HSE_VALUE / (float_t)pllm);
|
|
||||||
break;
|
|
||||||
|
|
||||||
default: /* MSI used as PLL clock source */
|
|
||||||
pllvco = ((float_t)msirange / (float_t)pllm);
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
|
|
||||||
pllvco = pllvco * ((float_t)(uint32_t)(RCC->PLL1DIVR & RCC_PLL1DIVR_PLL1N) + (fracn1/(float_t)0x2000) + (float_t)1U);
|
|
||||||
pllr = (((RCC->PLL1DIVR & RCC_PLL1DIVR_PLL1R) >> RCC_PLL1DIVR_PLL1R_Pos) + 1U );
|
|
||||||
SystemCoreClock = (uint32_t)((uint32_t)pllvco/pllr);
|
|
||||||
break;
|
|
||||||
|
|
||||||
default:
|
|
||||||
SystemCoreClock = msirange;
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
/* Compute HCLK clock frequency --------------------------------------------*/
|
|
||||||
/* Get HCLK prescaler */
|
|
||||||
tmp = AHBPrescTable[((RCC->CFGR2 & RCC_CFGR2_HPRE) >> RCC_CFGR2_HPRE_Pos)];
|
|
||||||
/* HCLK clock frequency */
|
|
||||||
SystemCoreClock >>= tmp;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* @brief Secure Non-Secure-Callable function to return the current
|
|
||||||
* SystemCoreClock value after SystemCoreClock update.
|
|
||||||
* The SystemCoreClock variable contains the core clock (HCLK), it can
|
|
||||||
* be used by the user application to setup the SysTick timer or configure
|
|
||||||
* other parameters.
|
|
||||||
* @retval SystemCoreClock value (HCLK)
|
|
||||||
*/
|
|
||||||
CMSE_NS_ENTRY uint32_t SECURE_SystemCoreClockUpdate(void)
|
|
||||||
{
|
|
||||||
SystemCoreClockUpdate();
|
|
||||||
|
|
||||||
return SystemCoreClock;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* @}
|
|
||||||
*/
|
|
||||||
|
|
||||||
/**
|
|
||||||
* @}
|
|
||||||
*/
|
|
||||||
|
|
||||||
/**
|
|
||||||
* @}
|
|
||||||
*/
|
|
||||||
|
|
Loading…
Reference in New Issue