90 lines
2.6 KiB
C
90 lines
2.6 KiB
C
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/**************************************************************************//**
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* @file system_Mini58Series.c
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* @version V1.00
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* $Revision: 3 $
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* $Date: 15/02/13 9:13a $
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* @brief Mini58 series system clock init code and assert handler
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*
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* @note
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* Copyright (C) 2015 Nuvoton Technology Corp. All rights reserved.
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*****************************************************************************/
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#include <stdint.h>
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#include "Mini58Series.h"
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/*----------------------------------------------------------------------------
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Clock Variable definitions
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*----------------------------------------------------------------------------*/
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uint32_t __HSI = __HIRC; /*!< Factory Default is internal high speed RC 44.2368M divided by 2 */
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uint32_t SystemCoreClock; /*!< System Clock Frequency (Core Clock) */
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uint32_t PllClock = __HIRC; /*!< PLL Output Clock Frequency */
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uint32_t CyclesPerUs; /*!< Cycles per micro second */
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/**
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* @brief Check HIRC clock rate feed to HCLK
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*
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* @return none
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*/
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void SystemInit (void)
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{
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}
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/**
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* @brief This function is used to update the variable SystemCoreClock
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* and must be called whenever the core clock is changed.
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* @param None.
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* @retval None.
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*/
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void SystemCoreClockUpdate (void)
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{
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uint32_t u32CoreFreq, u32ClkSrc;
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/* Update PLL Clock */
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PllClock = CLK_GetPLLClockFreq();
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u32ClkSrc = CLK->CLKSEL0 & CLK_CLKSEL0_HCLKSEL_Msk;
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if (u32ClkSrc == 0)
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u32CoreFreq = __XTAL; /* External crystal clock */
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else if (u32ClkSrc ==2)
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u32CoreFreq = PllClock; /* PLL clock */
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else if (u32ClkSrc == 3)
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u32CoreFreq = __IRC10K; /* Internal 10K crystal clock */
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else if (u32ClkSrc == 7)
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u32CoreFreq = __HIRC; /* Factory Default is internal RC */
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else
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u32CoreFreq = __HIRC; /* unknown value, use Factory Default is internal RC */
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SystemCoreClock = (u32CoreFreq/((CLK->CLKDIV & CLK_CLKDIV_HCLKDIV_Msk) + 1));
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CyclesPerUs = (SystemCoreClock + 500000) / 1000000;
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}
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#if USE_ASSERT
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/**
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* @brief Assert Error Message
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*
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* @param[in] file the source file name
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* @param[in] line line number
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*
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* @return None
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*
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* @details The function prints the source file name and line number where
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* the ASSERT_PARAM() error occurs, and then stops in an infinite loop.
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*/
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void AssertError(uint8_t * file, uint32_t line)
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{
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printf("[%s] line %d : wrong parameters.\r\n", file, line);
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/* Infinite loop */
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while(1) ;
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}
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#endif
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/*** (C) COPYRIGHT 2015 Nuvoton Technology Corp. ***/
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