/**
??******************************************************************************
??*?@file????system_stm32f10x.c
??*?@author??MCD?Application?Team
??*?@version?V3.4.0
??*?@date????10/15/2010
??*?@brief???CMSIS?Cortex-M3?Device?Peripheral?Access?layer?System?Source?File.
??******************************************************************************??
??*
??*?THE?PRESENT?FIRMWARE?WHICH?IS?FOR?GUIDANCE?ONLY?AIMS?AT?PROVIDING?CUSTOMERS
??*?WITH?CODING?INFORMATION?REGARDING?THEIR?PRODUCTS?IN?ORDER?FOR?THEM?TO?SAVE
??*?TIME.?AS?A?RESULT?STMICROELECTRONICS?SHALL?NOT?BE?HELD?LIABLE?FOR?ANY
??*?DIRECT?INDIRECT?OR?CONSEQUENTIAL?DAMAGES?WITH?RESPECT?TO?ANY?CLAIMS?ARISING
??*?FROM?THE?CONTENT?OF?SUCH?FIRMWARE?AND/OR?THE?USE?MADE?BY?CUSTOMERS?OF?THE
??*?CODING?INFORMATION?CONTAINED?HEREIN?IN?CONNECTION?WITH?THEIR?PRODUCTS.
??*
??*?
©?COPYRIGHT?2010?STMicroelectronics

??******************************************************************************
??*/

/**?@addtogroup?CMSIS
??*?@{
??*/

/**?@addtogroup?stm32f10x_system
??*?@{
??*/??
??
/**?@addtogroup?STM32F10x_System_Private_Includes
??*?@{
??*/

#include?“stm32f10x.h“

/**
??*?@}
??*/

/**?@addtogroup?STM32F10x_System_Private_TypesDefinitions
??*?@{
??*/

/**
??*?@}
??*/

/**?@addtogroup?STM32F10x_System_Private_Defines
??*?@{
??*/

/*!???frequency?（after?reset?the?HSI?is?used?as?SYSCLK?source）
???
???IMPORTANT?NOTE:
???==============?
???1.?After?each?device?reset?the?HSI?is?used?as?System?clock?source.

???2.?Please?make?sure?that?the?selected?System?clock?doesn‘t?exceed?your?device‘s
??????maximum?frequency.
??????
???3.?If?none?of?the?define?below?is?enabled?the?HSI?is?used?as?System?clock
????source.

???4.?The?System?clock?configuration?functions?provided?within?this?file?assume?that:
????????-?For?Low?Medium?and?High?density?Value?line?devices?an?external?8MHz?
??????????crystal?is?used?to?drive?the?System?clock.
????????-?For?Low?Medium?and?High?density?devices?an?external?8MHz?crystal?is
??????????used?to?drive?the?System?clock.
????????-?For?Connectivity?line?devices?an?external?25MHz?crystal?is?used?to?drive
??????????the?System?clock.
?????If?you?are?using?different?crystal?you?have?to?adapt?those?functions?accordingly.
????*/
????
#if?defined?（STM32F10X_LD_VL）?||?（defined?STM32F10X_MD_VL）?||?（defined?STM32F10X_HD_VL）
/*?#define?SYSCLK_FREQ_HSE????HSE_VALUE?*/
???#define?SYSCLK_FREQ_24MHz??24000000
#else
/*?#define?SYSCLK_FREQ_HSE????HSE_VALUE?*/
/*?#define?SYSCLK_FREQ_24MHz??24000000?*/?
/*?#define?SYSCLK_FREQ_36MHz??36000000?*/
/*?#define?SYSCLK_FREQ_48MHz??48000000?*/
/*?#define?SYSCLK_FREQ_56MHz??56000000?*/
#define?SYSCLK_FREQ_72MHz??72000000
#endif

/*!?????on?STM3210E-EVAL?board?（STM32?High?density?and?XL-density?devices）?