WebSVN – DashDisplay – Diff – /branches/Dashboard_L152_v2/Drivers/STM32L1xx_HAL_Driver/Src/stm32l1xx_ll_rcc.c



/* Private macros ------------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/** @defgroup RCC_LL_Private_Functions RCC Private functions
  * @{
  */
static uint32_t RCC_GetSystemClockFreq(void);
static uint32_t RCC_GetHCLKClockFreq(uint32_t SYSCLK_Frequency);
static uint32_t RCC_GetPCLK1ClockFreq(uint32_t HCLK_Frequency);
static uint32_t RCC_GetPCLK2ClockFreq(uint32_t HCLK_Frequency);
static uint32_t RCC_PLL_GetFreqDomain_SYS(void);
/**
  * @}
  */
 
 

 
/**
  * @brief  Return SYSTEM clock frequency
  * @retval SYSTEM clock frequency (in Hz)
  */
static uint32_t RCC_GetSystemClockFreq(void)
{
  uint32_t frequency;
 
  /* Get SYSCLK source -------------------------------------------------------*/
  switch (LL_RCC_GetSysClkSource())

/**
  * @brief  Return HCLK clock frequency
  * @param  SYSCLK_Frequency SYSCLK clock frequency
  * @retval HCLK clock frequency (in Hz)
  */
static uint32_t RCC_GetHCLKClockFreq(uint32_t SYSCLK_Frequency)
{
  /* HCLK clock frequency */
  return __LL_RCC_CALC_HCLK_FREQ(SYSCLK_Frequency, LL_RCC_GetAHBPrescaler());
}
 
/**
  * @brief  Return PCLK1 clock frequency
  * @param  HCLK_Frequency HCLK clock frequency
  * @retval PCLK1 clock frequency (in Hz)
  */
static uint32_t RCC_GetPCLK1ClockFreq(uint32_t HCLK_Frequency)
{
  /* PCLK1 clock frequency */
  return __LL_RCC_CALC_PCLK1_FREQ(HCLK_Frequency, LL_RCC_GetAPB1Prescaler());
}
 
/**
  * @brief  Return PCLK2 clock frequency
  * @param  HCLK_Frequency HCLK clock frequency
  * @retval PCLK2 clock frequency (in Hz)
  */
static uint32_t RCC_GetPCLK2ClockFreq(uint32_t HCLK_Frequency)
{
  /* PCLK2 clock frequency */
  return __LL_RCC_CALC_PCLK2_FREQ(HCLK_Frequency, LL_RCC_GetAPB2Prescaler());
}
 
/**
  * @brief  Return PLL clock frequency used for system domain
  * @retval PLL clock frequency (in Hz)
  */
static uint32_t RCC_PLL_GetFreqDomain_SYS(void)
{
  uint32_t pllsource, pllinputfreq;
 
  /* PLL_VCO = (HSE_VALUE or HSI_VALUE / PLL divider) * PLL Multiplicator */
 

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(root)/branches/Dashboard_L152_v2/Drivers/STM32L1xx_HAL_Driver/Src/stm32l1xx_ll_rcc.c – Rev 56 → 61

Rev 56		Rev 61
Line 37...		Line 37...
37	/* Private macros ------------------------------------------------------------*/	37	/* Private macros ------------------------------------------------------------*/
38	/* Private function prototypes -----------------------------------------------*/	38	/* Private function prototypes -----------------------------------------------*/
39	/** @defgroup RCC_LL_Private_Functions RCC Private functions	39	/** @defgroup RCC_LL_Private_Functions RCC Private functions
40	* @{	40	* @{
41	*/	41	*/
42	uint32_t RCC_GetSystemClockFreq(void);	42	static uint32_t RCC_GetSystemClockFreq(void);
43	uint32_t RCC_GetHCLKClockFreq(uint32_t SYSCLK_Frequency);	43	static uint32_t RCC_GetHCLKClockFreq(uint32_t SYSCLK_Frequency);
44	uint32_t RCC_GetPCLK1ClockFreq(uint32_t HCLK_Frequency);	44	static uint32_t RCC_GetPCLK1ClockFreq(uint32_t HCLK_Frequency);
45	uint32_t RCC_GetPCLK2ClockFreq(uint32_t HCLK_Frequency);	45	static uint32_t RCC_GetPCLK2ClockFreq(uint32_t HCLK_Frequency);
46	uint32_t RCC_PLL_GetFreqDomain_SYS(void);	46	static uint32_t RCC_PLL_GetFreqDomain_SYS(void);
47	/**	47	/**
48	* @}	48	* @}
49	*/	49	*/
50		50
51		51
Line 197...		Line 197...
197		197
198	/**	198	/**
199	* @brief Return SYSTEM clock frequency	199	* @brief Return SYSTEM clock frequency
200	* @retval SYSTEM clock frequency (in Hz)	200	* @retval SYSTEM clock frequency (in Hz)
201	*/	201	*/
202	uint32_t RCC_GetSystemClockFreq(void)	202	static uint32_t RCC_GetSystemClockFreq(void)
203	{	203	{
204	uint32_t frequency;	204	uint32_t frequency;
205		205
206	/* Get SYSCLK source -------------------------------------------------------*/	206	/* Get SYSCLK source -------------------------------------------------------*/
207	switch (LL_RCC_GetSysClkSource())	207	switch (LL_RCC_GetSysClkSource())
Line 233...		Line 233...
233	/**	233	/**
234	* @brief Return HCLK clock frequency	234	* @brief Return HCLK clock frequency
235	* @param SYSCLK_Frequency SYSCLK clock frequency	235	* @param SYSCLK_Frequency SYSCLK clock frequency
236	* @retval HCLK clock frequency (in Hz)	236	* @retval HCLK clock frequency (in Hz)
237	*/	237	*/
238	uint32_t RCC_GetHCLKClockFreq(uint32_t SYSCLK_Frequency)	238	static uint32_t RCC_GetHCLKClockFreq(uint32_t SYSCLK_Frequency)
239	{	239	{
240	/* HCLK clock frequency */	240	/* HCLK clock frequency */
241	return __LL_RCC_CALC_HCLK_FREQ(SYSCLK_Frequency, LL_RCC_GetAHBPrescaler());	241	return __LL_RCC_CALC_HCLK_FREQ(SYSCLK_Frequency, LL_RCC_GetAHBPrescaler());
242	}	242	}
243		243
244	/**	244	/**
245	* @brief Return PCLK1 clock frequency	245	* @brief Return PCLK1 clock frequency
246	* @param HCLK_Frequency HCLK clock frequency	246	* @param HCLK_Frequency HCLK clock frequency
247	* @retval PCLK1 clock frequency (in Hz)	247	* @retval PCLK1 clock frequency (in Hz)
248	*/	248	*/
249	uint32_t RCC_GetPCLK1ClockFreq(uint32_t HCLK_Frequency)	249	static uint32_t RCC_GetPCLK1ClockFreq(uint32_t HCLK_Frequency)
250	{	250	{
251	/* PCLK1 clock frequency */	251	/* PCLK1 clock frequency */
252	return __LL_RCC_CALC_PCLK1_FREQ(HCLK_Frequency, LL_RCC_GetAPB1Prescaler());	252	return __LL_RCC_CALC_PCLK1_FREQ(HCLK_Frequency, LL_RCC_GetAPB1Prescaler());
253	}	253	}
254		254
255	/**	255	/**
256	* @brief Return PCLK2 clock frequency	256	* @brief Return PCLK2 clock frequency
257	* @param HCLK_Frequency HCLK clock frequency	257	* @param HCLK_Frequency HCLK clock frequency
258	* @retval PCLK2 clock frequency (in Hz)	258	* @retval PCLK2 clock frequency (in Hz)
259	*/	259	*/
260	uint32_t RCC_GetPCLK2ClockFreq(uint32_t HCLK_Frequency)	260	static uint32_t RCC_GetPCLK2ClockFreq(uint32_t HCLK_Frequency)
261	{	261	{
262	/* PCLK2 clock frequency */	262	/* PCLK2 clock frequency */
263	return __LL_RCC_CALC_PCLK2_FREQ(HCLK_Frequency, LL_RCC_GetAPB2Prescaler());	263	return __LL_RCC_CALC_PCLK2_FREQ(HCLK_Frequency, LL_RCC_GetAPB2Prescaler());
264	}	264	}
265		265
266	/**	266	/**
267	* @brief Return PLL clock frequency used for system domain	267	* @brief Return PLL clock frequency used for system domain
268	* @retval PLL clock frequency (in Hz)	268	* @retval PLL clock frequency (in Hz)
269	*/	269	*/
270	uint32_t RCC_PLL_GetFreqDomain_SYS(void)	270	static uint32_t RCC_PLL_GetFreqDomain_SYS(void)
271	{	271	{
272	uint32_t pllsource, pllinputfreq;	272	uint32_t pllsource, pllinputfreq;
273		273
274	/* PLL_VCO = (HSE_VALUE or HSI_VALUE / PLL divider) * PLL Multiplicator */	274	/* PLL_VCO = (HSE_VALUE or HSI_VALUE / PLL divider) * PLL Multiplicator */
275		275