/** | |
****************************************************************************** | |
* @file system_stm32l4xx.h | |
* @author MCD Application Team | |
* @version V1.3.1 | |
* @date 21-April-2017 | |
* @brief CMSIS Cortex-M4 Device System Source File for STM32L4xx devices. | |
****************************************************************************** | |
* @attention | |
* | |
* <h2><center>© COPYRIGHT(c) 2017 STMicroelectronics</center></h2> | |
* | |
* Redistribution and use in source and binary forms, with or without modification, | |
* are permitted provided that the following conditions are met: | |
* 1. Redistributions of source code must retain the above copyright notice, | |
* this list of conditions and the following disclaimer. | |
* 2. Redistributions in binary form must reproduce the above copyright notice, | |
* this list of conditions and the following disclaimer in the documentation | |
* and/or other materials provided with the distribution. | |
* 3. Neither the name of STMicroelectronics nor the names of its contributors | |
* may be used to endorse or promote products derived from this software | |
* without specific prior written permission. | |
* | |
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | |
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE | |
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR | |
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER | |
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, | |
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
* | |
****************************************************************************** | |
*/ | |
/** @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****/ |