1 /*******************************************************************************
2 * Copyright (C) 2019, Huada Semiconductor Co.,Ltd All rights reserved.
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10 * This software contains source code for use with HDSC
11 * components. This software is licensed by HDSC to be adapted only
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41 */
42 /******************************************************************************/
43 /** \file system_hc32l13x.c
44 **
45 ** System clock initialization.
46 ** @link SampleGroup Some description @endlink
47 **
48 ** - 2019-03-01 1.0 Lux First version.
49 **
50 ******************************************************************************/
51
52 /******************************************************************************/
53 /* Include files */
54 /******************************************************************************/
55 #include "base_types.h"
56 #include "hc32l136.h"
57 #include "system_hc32l13x.h"
58 #include "sysctrl.h"
59
60 /**
61 ******************************************************************************
62 ** System Clock Frequency (Core Clock) Variable according CMSIS
63 ******************************************************************************/
64 uint32_t SystemCoreClock = 4000000;
65
66
67 //add clock source.
SystemCoreClockUpdate(void)68 void SystemCoreClockUpdate (void) // Update SystemCoreClock variable
69 {
70 SystemCoreClock = Sysctrl_GetHClkFreq();
71 }
72
73 /**
74 ******************************************************************************
75 ** \brief Setup the microcontroller system. Initialize the System and update
76 ** the SystemCoreClock variable.
77 **
78 ** \param none
79 ** \return none
80 ******************************************************************************/
SystemInit(void)81 void SystemInit(void)
82 {
83 SystemCoreClockUpdate();
84
85 }
86
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92