/**
??******************************************************************************
??*?@file????system_stm32f1xx.c
??*?@author??MCD?Application?Team
??*?@version?V4.2.0
??*?@date????31-March-2017
??*?@brief???CMSIS?Cortex-M3?Device?Peripheral?Access?layer?System?Source?File.
??*?
??*?1.??This?file?provides?two?functions?and?one?global?variable?to?be?called?from?
??*?????user?application:
??*??????-?SystemInit（）:?Setups?the?system?clock?（System?clock?source?PLL?Multiplier
??*??????????????????????factors?AHB/APBx?prescalers?and?Flash?settings）.?
??*??????????????????????This?function?is?called?at?startup?just?after?reset?and?
??*??????????????????????before?branch?to?main?program.?This?call?is?made?inside
??*??????????????????????the?“startup_stm32f1xx_xx.s“?file.
??*
??*??????-?SystemCoreClock?variable:?Contains?the?core?clock?（HCLK）?it?can?be?used
??*??????????????????????????????????by?the?user?application?to?setup?the?SysTick?
??*??????????????????????????????????timer?or?configure?other?parameters.
??*?????????????????????????????????????
??*??????-?SystemCoreClockUpdate（）:?Updates?the?variable?SystemCoreClock?and?must
??*?????????????????????????????????be?called?whenever?the?core?clock?is?changed
??*?????????????????????????????????during?program?execution.
??*
??*?2.?After?each?device?reset?the?HSI?（8?MHz）?is?used?as?system?clock?source.
??*????Then?SystemInit（）?function?is?called?in?“startup_stm32f1xx_xx.s“?file?to
??*????configure?the?system?clock?before?to?branch?to?main?program.
??*
??*?4.?The?default?value?of?HSE?crystal?is?set?to?8?MHz?（or?25?MHz?depending?on
??*????the?product?used）?refer?to?“HSE_VALUE“.?
??*????When?HSE?is?used?as?system?clock?source?directly?or?through?PLL?and?you
??*????are?using?different?crystal?you?have?to?adapt?the?HSE?value?to?your?own
??*????configuration.
??*????????
??******************************************************************************
??*?@attention
??*
??*?
©?COPYRIGHT（c）?2017?STMicroelectronics

??*
??*?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?WARRANTIE

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2019-01-09?22:03??uart_and_ad\
?????文件????????8165??2019-01-09?21:37??uart_and_ad\.mxproject
?????目錄???????????0??2019-01-09?11:06??uart_and_ad\Drivers\
?????目錄???????????0??2019-01-09?11:07??uart_and_ad\Drivers\CMSIS\
?????目錄???????????0??2019-01-09?11:06??uart_and_ad\Drivers\CMSIS\Device\
?????目錄???????????0??2019-01-09?11:06??uart_and_ad\Drivers\CMSIS\Device\ST\
?????目錄???????????0??2019-01-09?11:06??uart_and_ad\Drivers\CMSIS\Device\ST\STM32F1xx\
?????目錄???????????0??2019-01-09?11:06??uart_and_ad\Drivers\CMSIS\Device\ST\STM32F1xx\Include\
?????文件??????499462??2019-01-08?10:33??uart_and_ad\Drivers\CMSIS\Device\ST\STM32F1xx\Include\stm32f100xb.h
?????文件??????544671??2019-01-08?10:33??uart_and_ad\Drivers\CMSIS\Device\ST\STM32F1xx\Include\stm32f100xe.h
?????文件??????450133??2019-01-08?10:33??uart_and_ad\Drivers\CMSIS\Device\ST\STM32F1xx\Include\stm32f101x6.h
?????文件??????460506??2019-01-08?10:33??uart_and_ad\Drivers\CMSIS\Device\ST\STM32F1xx\Include\stm32f101xb.h
?????文件??????538320??2019-01-08?10:33??uart_and_ad\Drivers\CMSIS\Device\ST\STM32F1xx\Include\stm32f101xe.h
?????文件??????553362??2019-01-08?10:33??uart_and_ad\Drivers\CMSIS\Device\ST\STM32F1xx\Include\stm32f101xg.h
?????文件??????542861??2019-01-08?10:33??uart_and_ad\Drivers\CMSIS\Device\ST\STM32F1xx\Include\stm32f102x6.h
?????文件??????552467??2019-01-08?10:33??uart_and_ad\Drivers\CMSIS\Device\ST\STM32F1xx\Include\stm32f102xb.h
?????文件??????874522??2019-01-08?10:33??uart_and_ad\Drivers\CMSIS\Device\ST\STM32F1xx\Include\stm32f103x6.h
?????文件??????884899??2019-01-08?10:33??uart_and_ad\Drivers\CMSIS\Device\ST\STM32F1xx\Include\stm32f103xb.h
?????文件??????971936??2019-01-08?10:33??uart_and_ad\Drivers\CMSIS\Device\ST\STM32F1xx\Include\stm32f103xe.h
?????文件??????986030??2019-01-08?10:33??uart_and_ad\Drivers\CMSIS\Device\ST\STM32F1xx\Include\stm32f103xg.h
?????文件?????1261567??2019-01-08?10:33??uart_and_ad\Drivers\CMSIS\Device\ST\STM32F1xx\Include\stm32f105xc.h
?????文件?????1342402??2019-01-08?10:33??uart_and_ad\Drivers\CMSIS\Device\ST\STM32F1xx\Include\stm32f107xc.h
?????文件????????8788??2019-01-08?10:33??uart_and_ad\Drivers\CMSIS\Device\ST\STM32F1xx\Include\stm32f1xx.h
?????文件????????3337??2019-01-08?10:33??uart_and_ad\Drivers\CMSIS\Device\ST\STM32F1xx\Include\system_stm32f1xx.h
?????目錄???????????0??2019-01-09?11:06??uart_and_ad\Drivers\CMSIS\Device\ST\STM32F1xx\Source\
?????目錄???????????0??2019-01-09?11:07??uart_and_ad\Drivers\CMSIS\Device\ST\STM32F1xx\Source\Templates\
?????目錄???????????0??2019-01-09?11:07??uart_and_ad\Drivers\CMSIS\Device\ST\STM32F1xx\Source\Templates\arm\
?????文件???????15127??2019-01-08?10:33??uart_and_ad\Drivers\CMSIS\Device\ST\STM32F1xx\Source\Templates\arm\startup_stm32f100xb.s
?????文件???????16715??2019-01-08?10:33??uart_and_ad\Drivers\CMSIS\Device\ST\STM32F1xx\Source\Templates\arm\startup_stm32f100xe.s
?????文件???????12564??2019-01-08?10:33??uart_and_ad\Drivers\CMSIS\Device\ST\STM32F1xx\Source\Templates\arm\startup_stm32f101x6.s
?????文件???????12937??2019-01-08?10:33??uart_and_ad\Drivers\CMSIS\Device\ST\STM32F1xx\Source\Templates\arm\startup_stm32f101xb.s
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