VGComBoard_3120_Demo/common/system_hc32l130f8ua.c

/******************************************************************************
 * Copyright (C) 2021, Xiaohua Semiconductor Co., Ltd. All rights reserved.
 *
 * This software component is licensed by XHSC under BSD 3-Clause license
 * (the "License"); You may not use this file except in compliance with the
 * License. You may obtain a copy of the License at:
 *                    opensource.org/licenses/BSD-3-Clause
 *
 ******************************************************************************/
 
/******************************************************************************
** @file system_hc32l130f8ua.c
**
** @brief Headerfile for SYSTEM functions
**
** @author MADS Team
**
** - 2022-01-26.
**
******************************************************************************/

/******************************************************************************/
/* Include files                                                              */
/******************************************************************************/
#include "base_types.h"
#include "hc32l130f8ua.h"
#include "system_hc32l130f8ua.h"

/**
 ******************************************************************************
 ** System Clock Frequency (Core Clock) Variable according CMSIS
 ******************************************************************************/
uint32_t SystemCoreClock;


//add clock source.
void SystemCoreClockUpdate (void) // Update SystemCoreClock variable
{
    SystemCoreClock = 4000000;
}

/**
 ******************************************************************************
 ** \brief  Setup the microcontroller system. Initialize the System and update
 ** the SystemCoreClock variable.
 **
 ** \param  none
 ** \return none
 ******************************************************************************/
void SystemInit(void)
{
    // TODO load trim from flash
    //hcr 4MHz manual trim.
    M0P_SYSCTRL->RCH_CR_f.TRIM = (*((volatile uint16_t*) (0x00100C08ul)));    //Loader 4MHz Trimming value                                            

    SystemCoreClockUpdate();

}