/**
??******************************************************************************
??*?@file????system_gd32f1x0.c
??*?@author??MCU?SD
??*?@version?V2.0.0
??*?@date????15-Jan-2016
??*?@brief???CMSIS?Cortex-M3?Device?Peripheral?Access?layer?System?Source?File.
??******************************************************************************
??*/

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

/**?@addtogroup?GD32F1x0_system
??*?@{
??*/??
??
/**?@addtogroup?GD32F1x0_System_Private_Includes
??*?@{
??*/

/*?Includes?------------------------------------------------------------------*/
#include?“gd32f1x0.h“

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

/**?@addtogroup?GD32F1x0_System_Private_Variables
??*?@{
??*/
#ifdef?GD32F170_190
#define?RCC_GCFGR_FREQ_DIVIDE_RESET?????（（uint32_t）0x08FF000C）????/*!???????????????????????????????????????????????????????????????????????CKOUTSRC[2:0]?CKOUTDIV[2:0]?and?PLLDV?bits????????????????????*/
#else

#define?RCC_GCFGR_FREQ_DIVIDE_RESET?????（（uint32_t）0x083F000C）????/*!???????????????????????????????????????????????????????????????????????USBPS[1:0]CKOTUSRC[2:0]?CKOUTDIV?and?PLLDV?bits??????????????*/
#endif?/*?GD32F170_190?*/
#define?RCC_GCCR_CLK_ENABLE_RESET???????（（uint32_t）0xFEF6FFFF）????/*!#define?RCC_GCCR_HSEBPS_RESET???????????（（uint32_t）0xFFFBFFFF）????/*!#define?RCC_GCFGR_CLK_SELECT_RESET??????（（uint32_t）0xF7C0FFFF）????/*!#define?RCC_GCFGR2_HSEPREDV1_RESET??????（（uint32_t）0xFFFFFFF0）????/*!#define?RCC_GCFGR3_RESET????????????????（（uint32_t）0xFFFFFEBC）????/*!#define?RCC_GCCR2_HSI14_RESET???????????（（uint32_t）0xFFFFFFFE）????/*!#define?RCC_GCIR_DISABLE????????????????（（uint32_t）0x00000000）????/*!#define?RCC_GCFGR_PLLMF3_0??????????????（（uint32_t）0x003C0000）????/*!#ifdef?GD32F170_190
#define?RCC_GCFGR4_RESET????????????????（（uint32_t）0x00003F07）????/*!#endif

/*?Uncomment?the?corresponding?line?to?configure?system?clock?that?you?need??*/?
/*?The?clock?is?from?HSE?oscillator?clock??*/
//#define?SYSCLK_FREQ_HSE????HSE_VALUE????????????????????????????/*!//#define?SYSCLK_FREQ_24MHz??24000000?????????????????????????????/*!