Include/system_stm32l5xx.h

/**
  ******************************************************************************
  * @file    system_stm32l5xx.h
  * @author  MCD Application Team
  * @brief   CMSIS Cortex-M33 Device System Source File for STM32L5xx devices.
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; Copyright (c) 2019 STMicroelectronics.
  * All rights reserved.</center></h2>
  *
  * This software component is licensed by ST under BSD 3-Clause license,
  * the "License"; You may not use this file except in compliance with the
  * License. You may obtain a copy of the License at:
  *                        opensource.org/licenses/BSD-3-Clause
  *
  ******************************************************************************
  */

/** @addtogroup CMSIS
  * @{
  */

/** @addtogroup STM32L5xx_system
  * @{
  */

#ifndef SYSTEM_STM32L5XX_H
#define SYSTEM_STM32L5XX_H

#ifdef __cplusplus
extern "C" {
#endif

/** @addtogroup STM32L5xx_System_Includes
  * @{
  */
#include <stdint.h>
/**
  * @}
  */

/** @addtogroup STM32L5xx_System_Exported_Variables
  * @{
  */
  /* The SystemCoreClock variable is updated in three ways:
      1) by calling CMSIS function SystemCoreClockUpdate()
      2) by calling HAL API function HAL_RCC_GetSysClockFreq()
      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.
  */
extern uint32_t SystemCoreClock;     /*!< System Clock Frequency (Core Clock)  */

extern const uint8_t  AHBPrescTable[16];    /*!< AHB prescalers table values */
extern const uint8_t  APBPrescTable[8];     /*!< APB prescalers table values */
extern const uint32_t MSIRangeTable[16];    /*!< MSI ranges table values     */

/**
  * @}
  */

/** @addtogroup STM32L5xx_System_Exported_Functions
  * @{
  */

/**
  \brief Setup the microcontroller system.

   Initialize the System and update the SystemCoreClock variable.
 */
extern void SystemInit (void);


/**
  \brief  Update SystemCoreClock variable.

   Updates the SystemCoreClock with current core Clock retrieved from cpu registers.
 */
extern void SystemCoreClockUpdate (void);


/**
  \brief  Update SystemCoreClock variable from secure application and return its value
          when security is implemented in the system (Non-secure callable function).

   Returns the SystemCoreClock value with current core Clock retrieved from cpu registers.
 */
extern uint32_t SECURE_SystemCoreClockUpdate(void);

/**
  * @}
  */

#ifdef __cplusplus
}
#endif

#endif /* SYSTEM_STM32L5XX_H */

/**
  * @}
  */

/**
  * @}
  */

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/