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C++ RCC_LSICmd函数代码示例

本文整理汇总了C++中RCC_LSICmd函数的典型用法代码示例。如果您正苦于以下问题：C++ RCC_LSICmd函数的具体用法？C++ RCC_LSICmd怎么用？C++ RCC_LSICmd使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。


在下文中一共展示了RCC_LSICmd函数的15个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: main

/**
  * @brief   Main program
  * @param  None
  * @retval None
  */
int main(void)
{	
	RCC_Configuration();
	GPIO_Configuration();
	USART_Configuration();	
	SysTick_Config(SystemCoreClock/10);
	// Enable the LSI OSC 
 	RCC_LSICmd(ENABLE);
	// Wait till LSI is ready 
	while (RCC_GetFlagStatus(RCC_FLAG_LSIRDY) == RESET) {};
	
 	IWDG_WriteAccessCmd(IWDG_WriteAccess_Enable);
	// IWDG counter clock: LSI/256 
	IWDG_SetPrescaler(IWDG_Prescaler_256);
	IWDG_SetReload(0x0FFF);
	// Reload IWDG counter 
	IWDG_ReloadCounter();
	// Enable IWDG (the LSI oscillator will be enabled by hardware) 
	IWDG_Enable(); 
	
	// Write memmory
	FLASH_UnlockBank1();
	FLASH_ErasePage(FLAG_ADDR);
	FLASH_ProgramWord(FLAG_ADDR,(u32)FLAG_UPDATED);
	FLASH_LockBank1();
	
	updateFW_control();
}
开发者ID:thaigiang，项目名称:VMS，代码行数:33，代码来源:main.c

示例2: TM_RTC_Config

void TM_RTC_Config(TM_RTC_ClockSource_t source) {
	if (source == TM_RTC_ClockSource_Internal) {
		/* Enable the LSI OSC */
		RCC_LSICmd(ENABLE);

		/* Wait till LSI is ready */
		while (RCC_GetFlagStatus(RCC_FLAG_LSIRDY) == RESET);

		/* Select the RTC Clock Source */
		RCC_RTCCLKConfig(RCC_RTCCLKSource_LSI);
	} else if (source == TM_RTC_ClockSource_External) {
		/* Enable the LSE OSC */
		RCC_LSEConfig(RCC_LSE_ON);

		/* Wait till LSE is ready */ 
		while (RCC_GetFlagStatus(RCC_FLAG_LSERDY) == RESET);

		/* Select the RTC Clock Source */
		RCC_RTCCLKConfig(RCC_RTCCLKSource_LSE);
	}
	
	/* Enable the RTC Clock */
	RCC_RTCCLKCmd(ENABLE);
	
	/* Wait for register synchronization */
	RTC_WaitForSynchro();

	/* Write status */
	RTC_WriteBackupRegister(RTC_STATUS_REG, RTC_STATUS_INIT_OK);
}
开发者ID:Mars55，项目名称:stm32f429，代码行数:30，代码来源:tm_stm32f4_rtc.c

示例3: LCD_Glass_Config

/**
  * @brief  Configures the LCD Glass. LSI is used as LCD clock source
  * @param  None
  * @retval None
  */
void LCD_Glass_Config(void)
{
  /* Enable PWR clock */
  RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE);

  /* Allow access to the RTC */
  PWR_RTCAccessCmd(ENABLE);

  /* Reset Backup Domain */
  RCC_RTCResetCmd(ENABLE);
  RCC_RTCResetCmd(DISABLE);

  /* LSI Enable */
  RCC_LSICmd(ENABLE);

  /* Wait till LSI is ready */
  while (RCC_GetFlagStatus(RCC_FLAG_LSIRDY) == RESET)
  {}

  /* LCD Clock Source Selection: LSI */
  RCC_RTCCLKConfig(RCC_RTCCLKSource_LSI);
#ifdef USE_STM32L152_EVAL
  /* LCD GLASS Initialization */
  LCD_GLASS_Init();
#endif  
}
开发者ID:jongtao，项目名称:stm32l-dev-chain，代码行数:31，代码来源:main.c

示例4: rtc_init

void rtc_init(void) {
    RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE); // Enable PWR clock

    PWR_RTCAccessCmd(ENABLE); // Enable access to RTC

    // Note: the LSI is used as RTC source clock
    // The RTC Clock may vary due to LSI frequency dispersion.  
   
    RCC_LSICmd(ENABLE); // Enable LSI
  
    while (RCC_GetFlagStatus(RCC_FLAG_LSIRDY) == RESET) {} // Wait until ready
    
    RCC_RTCCLKConfig(RCC_RTCCLKSource_LSI); // Select LSI as RTC Clock Source
  
    RCC_RTCCLKCmd(ENABLE); // Enable RTC Clock 
      
    RTC_WaitForSynchro(); // Wait for RTC registers synchronization

    uint32_t lsi_freq = 40000; // [TODO] To be measured precisely using a timer input capture

    RTC_InitTypeDef RTC_InitStructure;
    RTC_InitStructure.RTC_AsynchPrediv = 127;
    RTC_InitStructure.RTC_SynchPrediv	 = (lsi_freq / 128) - 1;
    RTC_InitStructure.RTC_HourFormat   = RTC_HourFormat_24;
    RTC_Init(&RTC_InitStructure);
    
    PWR_RTCAccessCmd(DISABLE); // Disable access to RTC
      
    rtc_inited = 1;
}
开发者ID:ElAbbassi，项目名称:mbed，代码行数:30，代码来源:rtc_api.c

示例5: RTC_Configuration

/****************************************************************************
* 名    称：void RTC_Configuration(void)
* 功    能：RTC配置函数
* 入口参数：无
* 出口参数：无
* 说    明：
* 调用方法：
****************************************************************************/
static void RTC_Configuration(void)
{ 
    /* Enable the PWR clock */
    RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE);
    /* Allow access to RTC */
    PWR_RTCAccessCmd(ENABLE);
     /*!< Reset RTC Domain */
    RCC_RTCResetCmd(ENABLE);
    RCC_RTCResetCmd(DISABLE);

#if defined (RTC_CLOCK_SOURCE_LSI)  /* LSI used as RTC source clock*/
    /* The RTC Clock may varies due to LSI frequency dispersion. */   
    /* Enable the LSI OSC */ 
    RCC_LSICmd(ENABLE);
    /* Wait till LSI is ready */  
    while(RCC_GetFlagStatus(RCC_FLAG_LSIRDY) == RESET) {}
    /* Select the RTC Clock Source */
    RCC_RTCCLKConfig(RCC_RTCCLKSource_LSI);
  
#elif defined (RTC_CLOCK_SOURCE_LSE) /* LSE used as RTC source clock *///外部32.378K晶振
    /* Enable the LSE OSC */
    RCC_LSEConfig(RCC_LSE_ON);
    /* Wait till LSE is ready */  
    while(RCC_GetFlagStatus(RCC_FLAG_LSERDY) == RESET) { }
    /* Select the RTC Clock Source */
    RCC_RTCCLKConfig(RCC_RTCCLKSource_LSE);
#else
    #error Please select the RTC Clock source inside the main.c file
#endif /* RTC_CLOCK_SOURCE_LSI */
  
    /* Enable the RTC Clock */
    RCC_RTCCLKCmd(ENABLE);
    /* Wait for RTC APB registers synchronisation */
    RTC_WaitForSynchro();
}
开发者ID:Lejacming，项目名称:The-sea-water-temperature-acquisition-system，代码行数:43，代码来源:RTC.c

示例6: RTC_Configuration

/**
  * @brief  Configures RTC clock source and prescaler.
  * @param  None
  * @retval None
  */
void RTC_Configuration(void)
{
    /* RTC clock source configuration ----------------------------------------*/
	/* Allow access to BKP Domain */
  	PWR_BackupAccessCmd(ENABLE);
	
    /* Reset Backup Domain */
    BKP_DeInit();
  
    /* Enable LSE OSC */
	RCC_LSICmd(ENABLE);
    /* Wait till LSE is ready */
	while(RCC_GetFlagStatus(RCC_FLAG_LSIRDY) == RESET)
    {
    }

    /* Select the RTC Clock Source */
	RCC_RTCCLKConfig(RCC_RTCCLKSource_LSI);

    /* Enable the RTC Clock */
    RCC_RTCCLKCmd(ENABLE);

    /* RTC configuration -----------------------------------------------------*/
    /* Wait for RTC APB registers synchronisation */
    RTC_WaitForSynchro();

    /* Set the RTC time base to 1s */
    RTC_SetPrescaler(32767);  
    /* Wait until last write operation on RTC registers has finished */
    RTC_WaitForLastTask();
	RTC_ITConfig(RTC_IT_ALR, ENABLE);
	RTC_WaitForLastTask();
  
}
开发者ID:idaohang，项目名称:stm32gps-stop，代码行数:39，代码来源:stm32gps_config.c

示例7: RTC_SetUp

void RTC_SetUp(void)
{
  /* Allow access to RTC */
	PWR_BackupAccessCmd(ENABLE);
	RCC_LSICmd(ENABLE); // LSI is used as RTC clock source
	while (RCC_GetFlagStatus(RCC_FLAG_LSIRDY) == RESET)
		; // Wait till LSI is ready

	RCC_RTCCLKConfig(RCC_RTCCLKSource_LSI); // Select RTC clock source
// Enable RTC clock
	RCC_RTCCLKCmd(ENABLE);

	RTC_WaitForSynchro(); // Wait until the RTC Time and Date registers (RTC_TR and RTC_DR) are synchronized with RTC APB clock.

	  // Set RTC calendar clock to 1 HZ (1 second)
	RTC_InitStructure.RTC_HourFormat = RTC_HourFormat_24;
	RTC_InitStructure.RTC_AsynchPrediv = 88;
	RTC_InitStructure.RTC_SynchPrediv = 470;
  
	if (RTC_Init(&RTC_InitStructure) == ERROR)
	{
		while (1)
			;
	}
}
开发者ID:Bigboy20769，项目名称:TCode，代码行数:25，代码来源:RTC.cpp

示例8: RTC_Config

/*
*********************************************************************************************************
*	函 数 名: RTC_Config
*	功能说明: 配置RTC用于跑表
*	形    参：无
*	返 回 值: 无
*********************************************************************************************************
*/
static void RTC_Config(void)
{
	/* 使能PWR时钟 */
	RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE);

	/* 允许访问RTC */
	PWR_BackupAccessCmd(ENABLE);

//	/* 复位备份域 */
//	RCC_BackupResetCmd(ENABLE);
//	RCC_BackupResetCmd(DISABLE);
	 
    /* 选择RTC时钟源 LSI或者LSE */	
	#if defined (RTC_CLOCK_SOURCE_LSI) 
		RCC_LSICmd(ENABLE);
		while(RCC_GetFlagStatus(RCC_FLAG_LSIRDY) == RESET)
		{
		}
		RCC_RTCCLKConfig(RCC_RTCCLKSource_LSI);

	#elif defined (RTC_CLOCK_SOURCE_LSE) 
		RCC_LSEConfig(RCC_LSE_ON);
		while(RCC_GetFlagStatus(RCC_FLAG_LSERDY) == RESET)
		{
		}
		RCC_RTCCLKConfig(RCC_RTCCLKSource_LSE);
	#else
		#error Please select the RTC Clock source inside the main.c file
	#endif
}
开发者ID:dasuimao，项目名称:DTS-2500_HMI0030_BOOT，代码行数:38，代码来源:bsp_rtc.c

示例9: RCC_LSICmd

void PhotonWdgs::begin(bool _enableWwdg,bool _enableIwdg,unsigned long _timeout, TIMid id)
{
    if(!_enableWwdg && !_enableIwdg) {
        // nothing to do ...
        return;
    }
    PhotonWdgs::_aliveCount = 0;
    PhotonWdgs::_timeoutval = _timeout / 10;

    RCC_LSICmd(ENABLE); //LSI is needed for Watchdogs

    PhotonWdgs::_wdgTimer.begin(PhotonWdgs::_tickleWDGs, 20, hmSec, id);
    // OTA updates won't work with watchdog enabled
    System.disableUpdates();
    PhotonWdgs::_wwdgRunning = _enableWwdg;
    if(_enableWwdg) {
        RCC_APB1PeriphClockCmd(RCC_APB1Periph_WWDG, ENABLE);
        WWDG_SetPrescaler(WWDG_Prescaler_8);
        WWDG_SetWindowValue(0x7F);
        WWDG_Enable(0x7F);
    }
    PhotonWdgs::_iwdgRunning = _enableIwdg;
    if(_enableIwdg) {
        IWDG_WriteAccessCmd(IWDG_WriteAccess_Enable);
        IWDG_SetPrescaler(IWDG_Prescaler_256);
        IWDG_WriteAccessCmd(IWDG_WriteAccess_Enable);
        IWDG_SetReload(0xFFF);
        IWDG_WriteAccessCmd(IWDG_WriteAccess_Enable);
        IWDG_Enable();
    }
}
开发者ID:specialcircumstances，项目名称:PondTopperUpper，代码行数:31，代码来源:photon-wdgs.cpp

示例10: RTC_Config

//RTC设置成内部或者外部时钟
void RTC_Config(rtc_clk rtcclk)
{
  RTC_InitTypeDef RTC_InitStructure;
  RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE);
  PWR_BackupAccessCmd(ENABLE);

	if(rtcclk == extrnal)
	{
		/* Enable the LSE OSC */
		RCC_LSEConfig(RCC_LSE_ON);
		/* Wait till LSE is ready */  
		while(RCC_GetFlagStatus(RCC_FLAG_LSERDY) == RESET);
		/* Select the RTC Clock Source */
		RCC_RTCCLKConfig(RCC_RTCCLKSource_LSE);
		/* Enable the RTC Clock */
		RCC_RTCCLKCmd(ENABLE);
		/* Wait for RTC APB registers synchronisation */
		RTC_WaitForSynchro();
	}
	if(rtcclk == inner)
	{
		RCC_LSICmd(ENABLE); //开启内部低速
		while(RCC_GetFlagStatus(RCC_FLAG_LSIRDY) == RESET);

		RCC_RTCCLKConfig(RCC_RTCCLKSource_LSI);
		RCC_RTCCLKCmd(ENABLE);
		RTC_WaitForSynchro();
	}
	
	RTC_InitStructure.RTC_AsynchPrediv = 0x7F;
	RTC_InitStructure.RTC_SynchPrediv = 0xFF;
	RTC_InitStructure.RTC_HourFormat = RTC_HourFormat_24;
	RTC_Init(&RTC_InitStructure);
}
开发者ID:big-big，项目名称:RD15002WV，代码行数:35，代码来源:bsp_rtc.c

示例11: RTC_Configure

// 配置RTC硬件。
void RTC_Configure(void)
{
  	/* Enable PWR and BKP clocks */
  	RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR | RCC_APB1Periph_BKP, ENABLE);
  
  	/* Allow access to BKP Domain */
  	PWR_BackupAccessCmd(ENABLE);
	
	RCC_RTCCLKCmd(ENABLE);

  	/* Reset Backup Domain */
  	BKP_DeInit();
  
  	/* Wait until last write operation on RTC registers has finished */
  	RTC_WaitForLastTask();	

#ifdef RTCClockSource_LSI

  	/* Enable LSI */ 
  	RCC_LSICmd(ENABLE);

  	/* Wait till LSI is ready */
  	while(RCC_GetFlagStatus(RCC_FLAG_LSIRDY) == RESET);
	
  	/* Select LSI as RTC Clock Source */
  	RCC_RTCCLKConfig(RCC_RTCCLKSource_LSI);  

#elif defined	RTCClockSource_LSE  

  	/* Enable LSE */
  	RCC_LSEConfig(RCC_LSE_ON);

	 /* Wait till LSE is ready */
  	while(RCC_GetFlagStatus(RCC_FLAG_LSERDY) == RESET);

  	/* Select LSE as RTC Clock Source */
  	RCC_RTCCLKConfig(RCC_RTCCLKSource_LSE);  
	
#endif

	// 上电后需要校准RTC时钟，也即准确计算出RTC的周期时长。
	RTC_Calibrate();

#ifdef RTCClockOutput_Enable  

  	/* Disable the Tamper Pin */
  	BKP_TamperPinCmd(DISABLE); /* To output RTCCLK/64 on Tamper pin, the tamper functionality must be disabled */
                               
  	/* Enable RTC Clock Output on Tamper Pin */
  	BKP_RTCCalibrationClockOutputCmd(ENABLE);
  
#endif 
  
  	/*允许RTC报警中断*/
	RTC_ITConfig(RTC_IT_ALR, ENABLE); 

  	/* Wait until last write operation on RTC registers has finished */
  	RTC_WaitForLastTask();
}
开发者ID:jianblin，项目名称:learngit，代码行数:60，代码来源:mcu_rtc.c

示例12: RTC_Configuration

void RTC_Configuration(void)
{
	/* Enable PWR and BKP clocks */
  	RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR | RCC_APB1Periph_BKP, ENABLE);

  	/* Allow access to BKP Domain */
  	PWR_BackupAccessCmd(ENABLE);

  	/* Reset Backup Domain */
  	BKP_DeInit();

#ifdef RTCClockSource_LSI
  /* Enable LSI */ 
  RCC_LSICmd(ENABLE);
  /* Wait till LSI is ready */
  while(RCC_GetFlagStatus(RCC_FLAG_LSIRDY) == RESET)
  {
  }

  /* Select LSI as RTC Clock Source */
  RCC_RTCCLKConfig(RCC_RTCCLKSource_LSI);  
#elif defined	RTCClockSource_LSE
  	/* Enable LSE */
  	RCC_LSEConfig(RCC_LSE_ON);
  	/* Wait till LSE is ready */
  	while (RCC_GetFlagStatus(RCC_FLAG_LSERDY) == RESET)
  	{}

  	/* Select LSE as RTC Clock Source */
  	RCC_RTCCLKConfig(RCC_RTCCLKSource_LSE);
#endif
  	/* Enable RTC Clock */
  	RCC_RTCCLKCmd(ENABLE);

  	/* Wait for RTC registers synchronization */
  	RTC_WaitForSynchro();

  	/* Wait until last write operation on RTC registers has finished */
  	RTC_WaitForLastTask();

  	/* Enable the RTC Second */
  	RTC_ITConfig(RTC_IT_SEC, ENABLE);

  	/* Wait until last write operation on RTC registers has finished */
  	RTC_WaitForLastTask();

  	/* Set RTC prescaler: set RTC period to 1sec */
      /* Set RTC prescaler: set RTC period to 1sec */
#ifdef RTCClockSource_LSI
  		RTC_SetPrescaler(31999); /* RTC period = RTCCLK/RTC_PR = (32.000 KHz)/(31999+1) */
#elif defined	RTCClockSource_LSE
  		RTC_SetPrescaler(32767); /* RTC period = RTCCLK/RTC_PR = (32.768 KHz)/(32767+1) */
#endif

  //	RTC_SetPrescaler(32767); /* RTC period = RTCCLK/RTC_PR = (32.768 KHz)/(32767+1) */

  	/* Wait until last write operation on RTC registers has finished */
  	RTC_WaitForLastTask();
}
开发者ID:weimingtom，项目名称:stm32-gui，代码行数:59，代码来源:rtc.c

示例13: SetRtcTime

void SetRtcTime(void)
{
		/* Enable PWR and BKP clocks */
		RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR | RCC_APB1Periph_BKP, ENABLE);

		/* Allow access to BKP Domain */
		PWR_BackupAccessCmd(ENABLE);

		/* Reset Backup Domain */
		BKP_DeInit();

		#ifdef RTC_LSE
		/* Enable LSE */
		RCC_LSEConfig(RCC_LSE_ON);
		/* Wait till LSE is ready */
		while (RCC_GetFlagStatus(RCC_FLAG_LSERDY) == RESET)
		{}

		/* Select LSE as RTC Clock Source */
		RCC_RTCCLKConfig(RCC_RTCCLKSource_LSE);
		#else
		/* Enable the LSI OSC */
		RCC_LSICmd(ENABLE);
		/* Wait till LSI is ready */
		while (RCC_GetFlagStatus(RCC_FLAG_LSIRDY) == RESET)
		{}
		/* Select the RTC Clock Source */
		RCC_RTCCLKConfig(RCC_RTCCLKSource_LSI);
		#endif

		/* Enable RTC Clock */
		RCC_RTCCLKCmd(ENABLE);

		/* Wait for RTC registers synchronization */
		RTC_WaitForSynchro();

		/* Wait until last write operation on RTC registers has finished */
		RTC_WaitForLastTask();

		/* Enable the RTC Second */
		RTC_ITConfig(RTC_IT_SEC, ENABLE);

		/* Wait until last write operation on RTC registers has finished */
		RTC_WaitForLastTask();


		printf("\r\n RTC configured....");

		/* Adjust time by values entred by the user on the hyperterminal */
//		Time_Adjust();
		Time_SetCalendarTime(time_set);

		BKP_WriteBackupRegister(BKP_DR1, 0xA5A5);
		/* Wait until last write operation on RTC registers has finished */
		RTC_WaitForLastTask();
}
开发者ID:MaxStudio，项目名称:GPS_TRACER_CODE，代码行数:56，代码来源:rtc.c

示例14: SetHSICLKToMSI

/**
  * @brief  To select MSI as System clock source 
  * @caller ADC_Icc_Test
  * @param Frequence, DIV by 2 ot not , With or without RTC
  * @retval None
  */
void SetHSICLKToMSI(uint32_t freq,bool div2,bool With_RTC)
{
  
  /* RCC system reset */
  RCC_DeInit();

  /* Flash 1 wait state */
  FLASH_SetLatency(FLASH_Latency_0);
  
  /* Disable Prefetch Buffer */
  FLASH_PrefetchBufferCmd(DISABLE);

  /* Disable 64-bit access */
  FLASH_ReadAccess64Cmd(DISABLE);
         
  /* Disable FLASH during SLeep  */
  FLASH_SLEEPPowerDownCmd(ENABLE);
 
  /* Enable the PWR APB1 Clock */
  RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE);

  /* Select the Voltage Range 3 (1.2V) */
  PWR_VoltageScalingConfig(PWR_VoltageScaling_Range3);

  /* Wait Until the Voltage Regulator is ready */
  while (PWR_GetFlagStatus(PWR_FLAG_VOS) != RESET)
  {}

  /* To configure the MSI frequency */
  RCC_MSIRangeConfig(freq);
  
  /* Select MSI as system clock source */
  RCC_SYSCLKConfig(RCC_SYSCLKSource_MSI);

  /* Wait till MSI is used as system clock source */
  while (RCC_GetSYSCLKSource() != 0x00)
  {}
  
  if (div2)
  {
    RCC_HCLKConfig(RCC_SYSCLK_Div2);    
  }

  RCC_HSICmd(DISABLE);

  /* Disable HSE clock */
  RCC_HSEConfig(RCC_HSE_OFF);

  /* Disable LSE clock */
  if (! With_RTC)
    RCC_LSEConfig(RCC_LSE_OFF);

  /* Disable LSI clock */
  RCC_LSICmd(DISABLE);  

}
开发者ID:nullsub，项目名称:stm32l-democode，代码行数:62，代码来源:icc_measure.c

示例15: rcc_init

/*==================================================================================
* 函 数 名： rcc_init
* 参    数： None
* 功能描述:  rcc初始化
* 返 回 值： None
* 备    注： 初始化系统时钟，需要注意stm32f10x.h中对系统时钟的定义
* 作    者： gaodb
* 创建时间： 2012.10
==================================================================================*/ 
static void rcc_init(void)
{
    ErrorStatus HSEStartUpStatus;

		RCC_DeInit();
		
		wait_sys_peri_ready();
		
    /* Enable HSE */  
    RCC_HSEConfig(RCC_HSE_ON);
    RCC_HSEConfig(RCC_HSE_Bypass);//外部晶振为24M有源晶振
    
    /* Wait till HSE is ready */
    HSEStartUpStatus = RCC_WaitForHSEStartUp(); 
    
    if (HSEStartUpStatus == SUCCESS)
    {    
				FLASH_PrefetchBufferCmd(FLASH_PrefetchBuffer_Enable);
				
				FLASH_SetLatency(FLASH_Latency_2);
				
				RCC_HCLKConfig(RCC_SYSCLK_Div1); 
				
				RCC_PCLK1Config(RCC_HCLK_Div2);//低速时钟最高36M
				
				RCC_PCLK2Config(RCC_HCLK_Div1);
				
				RCC_ADCCLKConfig(RCC_PCLK2_Div6);
		
        /* PLLCLK = 24MHz * 3 = 72 MHz */
        RCC_PLLConfig(RCC_PLLSource_HSE_Div1, RCC_PLLMul_3);
        
        /* Enable PLL */
        RCC_PLLCmd(ENABLE);
        
        /* Wait till PLL is ready */
        while (RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET)
        {}
        
        /* Select PLL as system clock source */
        RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);
        
        /* Wait till PLL is used as system clock source */
        while (RCC_GetSYSCLKSource() != 0x08)
        {}
    }
    RCC_ClockSecuritySystemCmd(ENABLE);  //Enable CSSON（Clock securuty system）  
    
		/* Enable the LSI OSC */
	  RCC_LSICmd(ENABLE);									 //为独立看门狗提供时钟
	  
	  /* Wait till LSI is ready */
	  while (RCC_GetFlagStatus(RCC_FLAG_LSIRDY) == RESET)
	  {}
}
开发者ID:gaodebang，项目名称:stm32f103-eval，代码行数:64，代码来源:sys_peripheral.c


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