/**************************************************************************//**
 * @file     system_M2351.c
 * @version  V2.00
 * $Revision: 6 $
 * $Date: 16/12/02 2:01p $
 * @brief    System Setting Source File
 *
 * @note
 * Copyright (C) 2016 Nuvoton Technology Corp. All rights reserved.
 *
 ******************************************************************************/
#include <arm_cmse.h>
#include <stdio.h>
#include <stdint.h>
#include "M2351.h"

#if defined (__ARM_FEATURE_CMSE) &&  (__ARM_FEATURE_CMSE == 3U)
#include "partition_M2351.h"
#endif


#if defined(__ICCARM__)
extern void *__vector_table;                   /* see startup file */
#else
extern void *__vector_handlers;                   /* see startup file */
#endif


/*----------------------------------------------------------------------------
  Clock Variable definitions
 *----------------------------------------------------------------------------*/
uint32_t SystemCoreClock  = __HSI;              /*!< System Clock Frequency (Core Clock) */
uint32_t CyclesPerUs      = (__HSI / 1000000);  /*!< Cycles per micro second             */
uint32_t PllClock         = __HSI;              /*!< PLL Output Clock Frequency          */
const uint32_t gau32ClkSrcTbl[] = {__HXT, __LXT, NULL, __LIRC, NULL, NULL, NULL, __HIRC};


/**
 * @brief    Update the Variable SystemCoreClock
 *
 * @param    None
 *
 * @return   None
 *
 * @details  This function is used to update the variable SystemCoreClock
 *           and must be called whenever the core clock is changed.
 */
void SystemCoreClockUpdate(void)
{
    /* Update PLL Clock */
    PllClock = CLK_GetPLLClockFreq();

    /* Update System Core Clock */
    SystemCoreClock = CLK_GetCPUFreq();

    /* Update Cycles per micro second */    
    CyclesPerUs = (SystemCoreClock + 500000) / 1000000; 
}



/**
 * @brief    System Initialization
 *
 * @param    None
 *
 * @return   None
 *
 * @details  The necessary initialization of system. Global variables are forbidden here.
 */
void SystemInit(void)
{

#if defined (__VTOR_PRESENT) && (__VTOR_PRESENT == 1U)
#if defined(__ICCARM__)
    SCB->VTOR = (uint32_t) &__vector_table;
#else
    SCB->VTOR = (uint32_t) &__vector_handlers;
#endif
#endif

#if defined (__ARM_FEATURE_CMSE) && (__ARM_FEATURE_CMSE == 3U)
    TZ_SAU_Setup();
    SCU_Setup();
    FMC_NSBA_Setup();
#endif
    
#ifdef INIT_SYSCLK_AT_BOOTING

#endif

}


#if USE_ASSERT

/**
 * @brief      Assert Error Message
 *
 * @param[in]  file  the source file name
 * @param[in]  line  line number
 *
 * @return     None
 *
 * @details    The function prints the source file name and line number where
 *             the ASSERT_PARAM() error occurs, and then stops in an infinite loop.
 */
void AssertError(uint8_t * file, uint32_t line)
{

    printf("[%s] line %d : wrong parameters.\r\n", file, line);

    /* Infinite loop */
    while(1) ;
}
#endif