77 lines
2.2 KiB
C
77 lines
2.2 KiB
C
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/***************************************************************
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*Copyright (C), 2017, Shanghai Eastsoft Microelectronics Co., Ltd
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*<EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> system_ES8P508x.c
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*<EFBFBD><EFBFBD> <EFBFBD>ߣ<EFBFBD> Liut
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*<EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD> V1.00
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*<EFBFBD><EFBFBD> <EFBFBD>ڣ<EFBFBD> 2017/07/14
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*<EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD>⺯<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD>
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*<EFBFBD><EFBFBD> ע<EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> ES8P508xоƬ
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<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ѧϰ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʾʹ<EFBFBD>ã<EFBFBD><EFBFBD><EFBFBD><EFBFBD>û<EFBFBD>ֱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ô<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ķ<EFBFBD><EFBFBD>ջ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>е<EFBFBD><EFBFBD>κη<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ρ<EFBFBD>
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***************************************************************/
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#include "system_ES8P508x.h"
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#include "lib_config.h"
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uint32_t SystemCoreClock = 48000000;
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/***************************************************************
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<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>SystemCoreClockUpdate
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<EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD>ϵͳʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ<EFBFBD>ڲ<EFBFBD>ʱ<EFBFBD><EFBFBD>20MHZ<EFBFBD><EFBFBD>ͬʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>SystemCoreClock
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<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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***************************************************************/
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void SystemCoreClockUpdate (void)
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{
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uint32_t Prot_Temp;
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uint16_t Count=0;
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SystemClockSelect(SCU_SysClk_HRC , CLK_SEL_HRC); //ѡ<><D1A1>ϵͳʱ<CDB3><CAB1>ΪHRCʱ<43><CAB1>
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PLLClock_Config(DISABLE, SCU_PLL_HRC, SCU_PLL_48M,ENABLE); //PLL<4C><4C>ֹ
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Prot_Temp = SCU->PROT.PROT;
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if(Prot_Temp != 0) //д<><D0B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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{SCU->PROT.Word = 0x55AA6996;} //<2F><><EFBFBD><EFBFBD>
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SCU->SCLKEN1.HRC_EN = 1; //ʹ<><CAB9><EFBFBD>ڲ<EFBFBD>20MHZ
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do
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{
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Count++;
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}
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while((SCU->SCLKEN1.HRC_RDY == 0)&&(Count != 0xFFF)); //<2F>ȴ<EFBFBD>ʱ<EFBFBD>ӿ<EFBFBD><D3BF><EFBFBD>
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if(Count == 0xFFF)
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{
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return ;
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}
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SCU->SCLKEN0.SYSCLK_DIV = 0; //ϵͳʱ<CDB3>Ӻ<EFBFBD><D3BA><EFBFBD>Ƶ1:1
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switch(SCU->SCLKEN0.CLK_SEL)
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{
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case 0:
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SystemCoreClock = 20000000; //HRC
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break;
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case 1:
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SystemCoreClock = 32000; //LRC
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break;
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default:
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break;
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}
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if(Prot_Temp != 0) //д<><D0B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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{SCU->PROT.Word = 0x00000000;} //<2F><><EFBFBD><EFBFBD>д<EFBFBD><D0B4><EFBFBD><EFBFBD>
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}
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/***************************************************************
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<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>SystemInit
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<EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD>ϵͳ<EFBFBD><EFBFBD>ʼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD>
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<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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***************************************************************/
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void SystemInit (void)
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{
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SystemCoreClockUpdate();
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}
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/*************************END OF FILE**********************/
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