/** | |
****************************************************************************** | |
* @file system_stm32l4xx.h | |
* @author MCD Application Team | |
* @brief CMSIS Cortex-M4 Device System Source File for STM32L4xx devices. | |
****************************************************************************** | |
* @attention | |
* | |
* <h2><center>© Copyright (c) 2017 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 stm32l4xx_system | |
* @{ | |
*/ | |
/** | |
* @brief Define to prevent recursive inclusion | |
*/ | |
#ifndef __SYSTEM_STM32L4XX_H | |
#define __SYSTEM_STM32L4XX_H | |
#ifdef __cplusplus | |
extern "C" { | |
#endif | |
/** @addtogroup STM32L4xx_System_Includes | |
* @{ | |
*/ | |
/** | |
* @} | |
*/ | |
/** @addtogroup STM32L4xx_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[12]; /*!< MSI ranges table values */ | |
/** | |
* @} | |
*/ | |
/** @addtogroup STM32L4xx_System_Exported_Constants | |
* @{ | |
*/ | |
/** | |
* @} | |
*/ | |
/** @addtogroup STM32L4xx_System_Exported_Macros | |
* @{ | |
*/ | |
/** | |
* @} | |
*/ | |
/** @addtogroup STM32L4xx_System_Exported_Functions | |
* @{ | |
*/ | |
extern void SystemInit(void); | |
extern void SystemCoreClockUpdate(void); | |
/** | |
* @} | |
*/ | |
#ifdef __cplusplus | |
} | |
#endif | |
#endif /*__SYSTEM_STM32L4XX_H */ | |
/** | |
* @} | |
*/ | |
/** | |
* @} | |
*/ | |
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |