/********************************** (C) COPYRIGHT *******************************
 * File Name          : system_ch32v20x.h
 * Author             : WCH
 * Version            : V1.0.0
 * Date               : 2024/06/26
 * Description        : CH32V20x Device Peripheral Access Layer System Header File.
*********************************************************************************
* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
* Attention: This software (modified or not) and binary are used for 
* microcontroller manufactured by Nanjing Qinheng Microelectronics.
*******************************************************************************/
#ifndef __SYSTEM_ch32v20x_H 
#define __SYSTEM_ch32v20x_H

#ifdef __cplusplus
 extern "C" {
#endif 

#define HSI      0   //HSI
#define HSI_1_2  1   //HSI/2

//#define PLL_Source   HSI
#define PLL_Source   HSI_1_2

extern uint32_t SystemCoreClock;          /* System Clock Frequency (Core Clock) */

/* System_Exported_Functions */  
extern void SystemInit(void);
extern void SystemCoreClockUpdate(void);

#ifdef __cplusplus
}
#endif

#endif /*__CH32V20x_SYSTEM_H */