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Sem-dma/Drivers/STM32F7xx_HAL_Driver/Src/stm32f7xx_ll_rcc.c

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2023-12-11 13:43:05 +00:00
/**
******************************************************************************
* @file stm32f7xx_ll_rcc.c
* @author MCD Application Team
* @brief RCC LL module driver.
******************************************************************************
* @attention
*
* Copyright (c) 2017 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file in
* the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
******************************************************************************
*/
#if defined(USE_FULL_LL_DRIVER)
/* Includes ------------------------------------------------------------------*/
#include "stm32f7xx_ll_rcc.h"
#ifdef USE_FULL_ASSERT
#include "stm32_assert.h"
#else
#define assert_param(expr) ((void)0U)
#endif
/** @addtogroup STM32F7xx_LL_Driver
* @{
*/
#if defined(RCC)
/** @addtogroup RCC_LL
* @{
*/
/* Private types -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private constants ---------------------------------------------------------*/
/* Private macros ------------------------------------------------------------*/
/** @addtogroup RCC_LL_Private_Macros
* @{
*/
#define IS_LL_RCC_USART_CLKSOURCE(__VALUE__) (((__VALUE__) == LL_RCC_USART1_CLKSOURCE) \
|| ((__VALUE__) == LL_RCC_USART2_CLKSOURCE) \
|| ((__VALUE__) == LL_RCC_USART3_CLKSOURCE) \
|| ((__VALUE__) == LL_RCC_USART6_CLKSOURCE))
#define IS_LL_RCC_UART_CLKSOURCE(__VALUE__) (((__VALUE__) == LL_RCC_UART4_CLKSOURCE) \
|| ((__VALUE__) == LL_RCC_UART5_CLKSOURCE) \
|| ((__VALUE__) == LL_RCC_UART7_CLKSOURCE) \
|| ((__VALUE__) == LL_RCC_UART8_CLKSOURCE))
#if defined(I2C4)
#define IS_LL_RCC_I2C_CLKSOURCE(__VALUE__) (((__VALUE__) == LL_RCC_I2C1_CLKSOURCE) \
|| ((__VALUE__) == LL_RCC_I2C2_CLKSOURCE) \
|| ((__VALUE__) == LL_RCC_I2C3_CLKSOURCE) \
|| ((__VALUE__) == LL_RCC_I2C4_CLKSOURCE))
#else
#define IS_LL_RCC_I2C_CLKSOURCE(__VALUE__) (((__VALUE__) == LL_RCC_I2C1_CLKSOURCE) \
|| ((__VALUE__) == LL_RCC_I2C2_CLKSOURCE) \
|| ((__VALUE__) == LL_RCC_I2C3_CLKSOURCE))
#endif /* I2C4 */
#define IS_LL_RCC_LPTIM_CLKSOURCE(__VALUE__) (((__VALUE__) == LL_RCC_LPTIM1_CLKSOURCE))
#define IS_LL_RCC_SAI_CLKSOURCE(__VALUE__) (((__VALUE__) == LL_RCC_SAI1_CLKSOURCE) \
|| ((__VALUE__) == LL_RCC_SAI2_CLKSOURCE))
#if defined(SDMMC2)
#define IS_LL_RCC_SDMMC_CLKSOURCE(__VALUE__) (((__VALUE__) == LL_RCC_SDMMC1_CLKSOURCE) \
|| ((__VALUE__) == LL_RCC_SDMMC2_CLKSOURCE))
#else
#define IS_LL_RCC_SDMMC_CLKSOURCE(__VALUE__) (((__VALUE__) == LL_RCC_SDMMC1_CLKSOURCE))
#endif /* SDMMC2 */
#define IS_LL_RCC_RNG_CLKSOURCE(__VALUE__) (((__VALUE__) == LL_RCC_RNG_CLKSOURCE))
#define IS_LL_RCC_USB_CLKSOURCE(__VALUE__) (((__VALUE__) == LL_RCC_USB_CLKSOURCE))
#if defined(DFSDM1_Channel0)
#define IS_LL_RCC_DFSDM_CLKSOURCE(__VALUE__) (((__VALUE__) == LL_RCC_DFSDM1_CLKSOURCE))
#define IS_LL_RCC_DFSDM_AUDIO_CLKSOURCE(__VALUE__) (((__VALUE__) == LL_RCC_DFSDM1_AUDIO_CLKSOURCE))
#endif /* DFSDM1_Channel0 */
#define IS_LL_RCC_I2S_CLKSOURCE(__VALUE__) (((__VALUE__) == LL_RCC_I2S1_CLKSOURCE))
#if defined(CEC)
#define IS_LL_RCC_CEC_CLKSOURCE(__VALUE__) (((__VALUE__) == LL_RCC_CEC_CLKSOURCE))
#endif /* CEC */
#if defined(DSI)
#define IS_LL_RCC_DSI_CLKSOURCE(__VALUE__) (((__VALUE__) == LL_RCC_DSI_CLKSOURCE))
#endif /* DSI */
#if defined(LTDC)
#define IS_LL_RCC_LTDC_CLKSOURCE(__VALUE__) (((__VALUE__) == LL_RCC_LTDC_CLKSOURCE))
#endif /* LTDC */
#if defined(SPDIFRX)
#define IS_LL_RCC_SPDIFRX_CLKSOURCE(__VALUE__) (((__VALUE__) == LL_RCC_SPDIFRX1_CLKSOURCE))
#endif /* SPDIFRX */
/**
* @}
*/
/* Private function prototypes -----------------------------------------------*/
/** @defgroup RCC_LL_Private_Functions RCC Private functions
* @{
*/
uint32_t RCC_GetSystemClockFreq(void);
uint32_t RCC_GetHCLKClockFreq(uint32_t SYSCLK_Frequency);
uint32_t RCC_GetPCLK1ClockFreq(uint32_t HCLK_Frequency);
uint32_t RCC_GetPCLK2ClockFreq(uint32_t HCLK_Frequency);
uint32_t RCC_PLL_GetFreqDomain_SYS(void);
uint32_t RCC_PLL_GetFreqDomain_SAI(void);
uint32_t RCC_PLL_GetFreqDomain_48M(void);
#if defined(DSI)
uint32_t RCC_PLL_GetFreqDomain_DSI(void);
#endif /* DSI */
uint32_t RCC_PLLSAI_GetFreqDomain_SAI(void);
uint32_t RCC_PLLSAI_GetFreqDomain_48M(void);
#if defined(LTDC)
uint32_t RCC_PLLSAI_GetFreqDomain_LTDC(void);
#endif /* LTDC */
uint32_t RCC_PLLI2S_GetFreqDomain_I2S(void);
uint32_t RCC_PLLI2S_GetFreqDomain_SAI(void);
#if defined(SPDIFRX)
uint32_t RCC_PLLI2S_GetFreqDomain_SPDIFRX(void);
#endif /* SPDIFRX */
/**
* @}
*/
/* Exported functions --------------------------------------------------------*/
/** @addtogroup RCC_LL_Exported_Functions
* @{
*/
/** @addtogroup RCC_LL_EF_Init
* @{
*/
/**
* @brief Reset the RCC clock configuration to the default reset state.
* @note The default reset state of the clock configuration is given below:
* - HSI ON and used as system clock source
* - HSE, PLL, PLLI2S, PLLSAI OFF
* - AHB, APB1 and APB2 prescaler set to 1.
* - CSS, MCO OFF
* - All interrupts disabled
* @note This function doesn't modify the configuration of the
* - Peripheral clocks
* - LSI, LSE and RTC clocks
* @retval An ErrorStatus enumeration value:
* - SUCCESS: RCC registers are de-initialized
* - ERROR: not applicable
*/
ErrorStatus LL_RCC_DeInit(void)
{
__IO uint32_t vl_mask;
/* Set HSION bit */
LL_RCC_HSI_Enable();
/* Wait for HSI READY bit */
while(LL_RCC_HSI_IsReady() != 1U)
{}
/* Reset CFGR register */
LL_RCC_WriteReg(CFGR, 0x00000000U);
/* Read CR register */
vl_mask = LL_RCC_ReadReg(CR);
/* Reset HSEON, HSEBYP, PLLON, CSSON, PLLI2SON and PLLSAION bits */
CLEAR_BIT(vl_mask, (RCC_CR_HSEON | RCC_CR_HSEBYP | RCC_CR_PLLON | RCC_CR_CSSON | RCC_CR_PLLSAION | RCC_CR_PLLI2SON));
/* Write new value in CR register */
LL_RCC_WriteReg(CR, vl_mask);
/* Set HSITRIM bits to the reset value*/
LL_RCC_HSI_SetCalibTrimming(0x10U);
/* Wait for PLL READY bit to be reset */
while(LL_RCC_PLL_IsReady() != 0U)
{}
/* Wait for PLLI2S READY bit to be reset */
while(LL_RCC_PLLI2S_IsReady() != 0U)
{}
/* Wait for PLLSAI READY bit to be reset */
while(LL_RCC_PLLSAI_IsReady() != 0U)
{}
/* Reset PLLCFGR register */
LL_RCC_WriteReg(PLLCFGR, 0x24003010U);
/* Reset PLLI2SCFGR register */
LL_RCC_WriteReg(PLLI2SCFGR, 0x24003000U);
/* Reset PLLSAICFGR register */
LL_RCC_WriteReg(PLLSAICFGR, 0x24003000U);
/* Disable all interrupts */
CLEAR_BIT(RCC->CIR, RCC_CIR_LSIRDYIE | RCC_CIR_LSERDYIE | RCC_CIR_HSIRDYIE | RCC_CIR_HSERDYIE | RCC_CIR_PLLRDYIE | RCC_CIR_PLLI2SRDYIE | RCC_CIR_PLLSAIRDYIE);
/* Clear all interrupt flags */
SET_BIT(RCC->CIR, RCC_CIR_LSIRDYC | RCC_CIR_LSERDYC | RCC_CIR_HSIRDYC | RCC_CIR_HSERDYC | RCC_CIR_PLLRDYC | RCC_CIR_PLLI2SRDYC | RCC_CIR_PLLSAIRDYC | RCC_CIR_CSSC);
/* Clear LSION bit */
CLEAR_BIT(RCC->CSR, RCC_CSR_LSION);
/* Reset all CSR flags */
SET_BIT(RCC->CSR, RCC_CSR_RMVF);
return SUCCESS;
}
/**
* @}
*/
/** @addtogroup RCC_LL_EF_Get_Freq
* @brief Return the frequencies of different on chip clocks; System, AHB, APB1 and APB2 buses clocks
* and different peripheral clocks available on the device.
* @note If SYSCLK source is HSI, function returns values based on HSI_VALUE(**)
* @note If SYSCLK source is HSE, function returns values based on HSE_VALUE(***)
* @note If SYSCLK source is PLL, function returns values based on HSE_VALUE(***)
* or HSI_VALUE(**) multiplied/divided by the PLL factors.
* @note (**) HSI_VALUE is a constant defined in this file (default value
* 16 MHz) but the real value may vary depending on the variations
* in voltage and temperature.
* @note (***) HSE_VALUE is a constant defined in this file (default value
* 25 MHz), user has to ensure that HSE_VALUE is same as the real
* frequency of the crystal used. Otherwise, this function may
* have wrong result.
* @note The result of this function could be incorrect when using fractional
* value for HSE crystal.
* @note This function can be used by the user application to compute the
* baud-rate for the communication peripherals or configure other parameters.
* @{
*/
/**
* @brief Return the frequencies of different on chip clocks; System, AHB, APB1 and APB2 buses clocks
* @note Each time SYSCLK, HCLK, PCLK1 and/or PCLK2 clock changes, this function
* must be called to update structure fields. Otherwise, any
* configuration based on this function will be incorrect.
* @param RCC_Clocks pointer to a @ref LL_RCC_ClocksTypeDef structure which will hold the clocks frequencies
* @retval None
*/
void LL_RCC_GetSystemClocksFreq(LL_RCC_ClocksTypeDef *RCC_Clocks)
{
/* Get SYSCLK frequency */
RCC_Clocks->SYSCLK_Frequency = RCC_GetSystemClockFreq();
/* HCLK clock frequency */
RCC_Clocks->HCLK_Frequency = RCC_GetHCLKClockFreq(RCC_Clocks->SYSCLK_Frequency);
/* PCLK1 clock frequency */
RCC_Clocks->PCLK1_Frequency = RCC_GetPCLK1ClockFreq(RCC_Clocks->HCLK_Frequency);
/* PCLK2 clock frequency */
RCC_Clocks->PCLK2_Frequency = RCC_GetPCLK2ClockFreq(RCC_Clocks->HCLK_Frequency);
}
/**
* @brief Return USARTx clock frequency
* @param USARTxSource This parameter can be one of the following values:
* @arg @ref LL_RCC_USART1_CLKSOURCE
* @arg @ref LL_RCC_USART2_CLKSOURCE
* @arg @ref LL_RCC_USART3_CLKSOURCE
* @arg @ref LL_RCC_USART6_CLKSOURCE
* @retval USART clock frequency (in Hz)
* - @ref LL_RCC_PERIPH_FREQUENCY_NO indicates that oscillator (HSI or LSE) is not ready
*/
uint32_t LL_RCC_GetUSARTClockFreq(uint32_t USARTxSource)
{
uint32_t usart_frequency = LL_RCC_PERIPH_FREQUENCY_NO;
/* Check parameter */
assert_param(IS_LL_RCC_USART_CLKSOURCE(USARTxSource));
if (USARTxSource == LL_RCC_USART1_CLKSOURCE)
{
/* USART1CLK clock frequency */
switch (LL_RCC_GetUSARTClockSource(USARTxSource))
{
case LL_RCC_USART1_CLKSOURCE_SYSCLK: /* USART1 Clock is System Clock */
usart_frequency = RCC_GetSystemClockFreq();
break;
case LL_RCC_USART1_CLKSOURCE_HSI: /* USART1 Clock is HSI Osc. */
if (LL_RCC_HSI_IsReady())
{
usart_frequency = HSI_VALUE;
}
break;
case LL_RCC_USART1_CLKSOURCE_LSE: /* USART1 Clock is LSE Osc. */
if (LL_RCC_LSE_IsReady())
{
usart_frequency = LSE_VALUE;
}
break;
case LL_RCC_USART1_CLKSOURCE_PCLK2: /* USART1 Clock is PCLK2 */
default:
usart_frequency = RCC_GetPCLK2ClockFreq(RCC_GetHCLKClockFreq(RCC_GetSystemClockFreq()));
break;
}
}
else if (USARTxSource == LL_RCC_USART2_CLKSOURCE)
{
/* USART2CLK clock frequency */
switch (LL_RCC_GetUSARTClockSource(USARTxSource))
{
case LL_RCC_USART2_CLKSOURCE_SYSCLK: /* USART2 Clock is System Clock */
usart_frequency = RCC_GetSystemClockFreq();
break;
case LL_RCC_USART2_CLKSOURCE_HSI: /* USART2 Clock is HSI Osc. */
if (LL_RCC_HSI_IsReady())
{
usart_frequency = HSI_VALUE;
}
break;
case LL_RCC_USART2_CLKSOURCE_LSE: /* USART2 Clock is LSE Osc. */
if (LL_RCC_LSE_IsReady())
{
usart_frequency = LSE_VALUE;
}
break;
case LL_RCC_USART2_CLKSOURCE_PCLK1: /* USART2 Clock is PCLK1 */
default:
usart_frequency = RCC_GetPCLK1ClockFreq(RCC_GetHCLKClockFreq(RCC_GetSystemClockFreq()));
break;
}
}
else if (USARTxSource == LL_RCC_USART6_CLKSOURCE)
{
/* USART6CLK clock frequency */
switch (LL_RCC_GetUSARTClockSource(USARTxSource))
{
case LL_RCC_USART6_CLKSOURCE_SYSCLK: /* USART6 Clock is System Clock */
usart_frequency = RCC_GetSystemClockFreq();
break;
case LL_RCC_USART6_CLKSOURCE_HSI: /* USART6 Clock is HSI Osc. */
if (LL_RCC_HSI_IsReady())
{
usart_frequency = HSI_VALUE;
}
break;
case LL_RCC_USART6_CLKSOURCE_LSE: /* USART6 Clock is LSE Osc. */
if (LL_RCC_LSE_IsReady())
{
usart_frequency = LSE_VALUE;
}
break;
case LL_RCC_USART6_CLKSOURCE_PCLK2: /* USART6 Clock is PCLK2 */
default:
usart_frequency = RCC_GetPCLK2ClockFreq(RCC_GetHCLKClockFreq(RCC_GetSystemClockFreq()));
break;
}
}
else
{
if (USARTxSource == LL_RCC_USART3_CLKSOURCE)
{
/* USART3CLK clock frequency */
switch (LL_RCC_GetUSARTClockSource(USARTxSource))
{
case LL_RCC_USART3_CLKSOURCE_SYSCLK: /* USART3 Clock is System Clock */
usart_frequency = RCC_GetSystemClockFreq();
break;
case LL_RCC_USART3_CLKSOURCE_HSI: /* USART3 Clock is HSI Osc. */
if (LL_RCC_HSI_IsReady())
{
usart_frequency = HSI_VALUE;
}
break;
case LL_RCC_USART3_CLKSOURCE_LSE: /* USART3 Clock is LSE Osc. */
if (LL_RCC_LSE_IsReady())
{
usart_frequency = LSE_VALUE;
}
break;
case LL_RCC_USART3_CLKSOURCE_PCLK1: /* USART3 Clock is PCLK1 */
default:
usart_frequency = RCC_GetPCLK1ClockFreq(RCC_GetHCLKClockFreq(RCC_GetSystemClockFreq()));
break;
}
}
}
return usart_frequency;
}
/**
* @brief Return UARTx clock frequency
* @param UARTxSource This parameter can be one of the following values:
* @arg @ref LL_RCC_UART4_CLKSOURCE
* @arg @ref LL_RCC_UART5_CLKSOURCE
* @arg @ref LL_RCC_UART7_CLKSOURCE
* @arg @ref LL_RCC_UART8_CLKSOURCE
* @retval UART clock frequency (in Hz)
* - @ref LL_RCC_PERIPH_FREQUENCY_NO indicates that oscillator (HSI or LSE) is not ready
*/
uint32_t LL_RCC_GetUARTClockFreq(uint32_t UARTxSource)
{
uint32_t uart_frequency = LL_RCC_PERIPH_FREQUENCY_NO;
/* Check parameter */
assert_param(IS_LL_RCC_UART_CLKSOURCE(UARTxSource));
if (UARTxSource == LL_RCC_UART4_CLKSOURCE)
{
/* UART4CLK clock frequency */
switch (LL_RCC_GetUARTClockSource(UARTxSource))
{
case LL_RCC_UART4_CLKSOURCE_SYSCLK: /* UART4 Clock is System Clock */
uart_frequency = RCC_GetSystemClockFreq();
break;
case LL_RCC_UART4_CLKSOURCE_HSI: /* UART4 Clock is HSI Osc. */
if (LL_RCC_HSI_IsReady())
{
uart_frequency = HSI_VALUE;
}
break;
case LL_RCC_UART4_CLKSOURCE_LSE: /* UART4 Clock is LSE Osc. */
if (LL_RCC_LSE_IsReady())
{
uart_frequency = LSE_VALUE;
}
break;
case LL_RCC_UART4_CLKSOURCE_PCLK1: /* UART4 Clock is PCLK1 */
default:
uart_frequency = RCC_GetPCLK1ClockFreq(RCC_GetHCLKClockFreq(RCC_GetSystemClockFreq()));
break;
}
}
else if (UARTxSource == LL_RCC_UART5_CLKSOURCE)
{
/* UART5CLK clock frequency */
switch (LL_RCC_GetUARTClockSource(UARTxSource))
{
case LL_RCC_UART5_CLKSOURCE_SYSCLK: /* UART5 Clock is System Clock */
uart_frequency = RCC_GetSystemClockFreq();
break;
case LL_RCC_UART5_CLKSOURCE_HSI: /* UART5 Clock is HSI Osc. */
if (LL_RCC_HSI_IsReady())
{
uart_frequency = HSI_VALUE;
}
break;
case LL_RCC_UART5_CLKSOURCE_LSE: /* UART5 Clock is LSE Osc. */
if (LL_RCC_LSE_IsReady())
{
uart_frequency = LSE_VALUE;
}
break;
case LL_RCC_UART5_CLKSOURCE_PCLK1: /* UART5 Clock is PCLK1 */
default:
uart_frequency = RCC_GetPCLK1ClockFreq(RCC_GetHCLKClockFreq(RCC_GetSystemClockFreq()));
break;
}
}
else if (UARTxSource == LL_RCC_UART7_CLKSOURCE)
{
/* UART7CLK clock frequency */
switch (LL_RCC_GetUARTClockSource(UARTxSource))
{
case LL_RCC_UART7_CLKSOURCE_SYSCLK: /* UART7 Clock is System Clock */
uart_frequency = RCC_GetSystemClockFreq();
break;
case LL_RCC_UART7_CLKSOURCE_HSI: /* UART7 Clock is HSI Osc. */
if (LL_RCC_HSI_IsReady())
{
uart_frequency = HSI_VALUE;
}
break;
case LL_RCC_UART7_CLKSOURCE_LSE: /* UART7 Clock is LSE Osc. */
if (LL_RCC_LSE_IsReady())
{
uart_frequency = LSE_VALUE;
}
break;
case LL_RCC_UART7_CLKSOURCE_PCLK1: /* UART7 Clock is PCLK1 */
default:
uart_frequency = RCC_GetPCLK1ClockFreq(RCC_GetHCLKClockFreq(RCC_GetSystemClockFreq()));
break;
}
}
else
{
if (UARTxSource == LL_RCC_UART8_CLKSOURCE)
{
/* UART8CLK clock frequency */
switch (LL_RCC_GetUARTClockSource(UARTxSource))
{
case LL_RCC_UART8_CLKSOURCE_SYSCLK: /* UART8 Clock is System Clock */
uart_frequency = RCC_GetSystemClockFreq();
break;
case LL_RCC_UART8_CLKSOURCE_HSI: /* UART8 Clock is HSI Osc. */
if (LL_RCC_HSI_IsReady())
{
uart_frequency = HSI_VALUE;
}
break;
case LL_RCC_UART8_CLKSOURCE_LSE: /* UART8 Clock is LSE Osc. */
if (LL_RCC_LSE_IsReady())
{
uart_frequency = LSE_VALUE;
}
break;
case LL_RCC_UART8_CLKSOURCE_PCLK1: /* UART8 Clock is PCLK1 */
default:
uart_frequency = RCC_GetPCLK1ClockFreq(RCC_GetHCLKClockFreq(RCC_GetSystemClockFreq()));
break;
}
}
}
return uart_frequency;
}
/**
* @brief Return I2Cx clock frequency
* @param I2CxSource This parameter can be one of the following values:
* @arg @ref LL_RCC_I2C1_CLKSOURCE
* @arg @ref LL_RCC_I2C2_CLKSOURCE
* @arg @ref LL_RCC_I2C3_CLKSOURCE
* @arg @ref LL_RCC_I2C4_CLKSOURCE (*)
*
* (*) value not defined in all devices.
* @retval I2C clock frequency (in Hz)
* - @ref LL_RCC_PERIPH_FREQUENCY_NO indicates that HSI oscillator is not ready
*/
uint32_t LL_RCC_GetI2CClockFreq(uint32_t I2CxSource)
{
uint32_t i2c_frequency = LL_RCC_PERIPH_FREQUENCY_NO;
/* Check parameter */
assert_param(IS_LL_RCC_I2C_CLKSOURCE(I2CxSource));
if (I2CxSource == LL_RCC_I2C1_CLKSOURCE)
{
/* I2C1 CLK clock frequency */
switch (LL_RCC_GetI2CClockSource(I2CxSource))
{
case LL_RCC_I2C1_CLKSOURCE_SYSCLK: /* I2C1 Clock is System Clock */
i2c_frequency = RCC_GetSystemClockFreq();
break;
case LL_RCC_I2C1_CLKSOURCE_HSI: /* I2C1 Clock is HSI Osc. */
if (LL_RCC_HSI_IsReady())
{
i2c_frequency = HSI_VALUE;
}
break;
case LL_RCC_I2C1_CLKSOURCE_PCLK1: /* I2C1 Clock is PCLK1 */
default:
i2c_frequency = RCC_GetPCLK1ClockFreq(RCC_GetHCLKClockFreq(RCC_GetSystemClockFreq()));
break;
}
}
else if (I2CxSource == LL_RCC_I2C2_CLKSOURCE)
{
/* I2C2 CLK clock frequency */
switch (LL_RCC_GetI2CClockSource(I2CxSource))
{
case LL_RCC_I2C2_CLKSOURCE_SYSCLK: /* I2C2 Clock is System Clock */
i2c_frequency = RCC_GetSystemClockFreq();
break;
case LL_RCC_I2C2_CLKSOURCE_HSI: /* I2C2 Clock is HSI Osc. */
if (LL_RCC_HSI_IsReady())
{
i2c_frequency = HSI_VALUE;
}
break;
case LL_RCC_I2C2_CLKSOURCE_PCLK1: /* I2C2 Clock is PCLK1 */
default:
i2c_frequency = RCC_GetPCLK1ClockFreq(RCC_GetHCLKClockFreq(RCC_GetSystemClockFreq()));
break;
}
}
else if (I2CxSource == LL_RCC_I2C3_CLKSOURCE)
{
/* I2C3 CLK clock frequency */
switch (LL_RCC_GetI2CClockSource(I2CxSource))
{
case LL_RCC_I2C3_CLKSOURCE_SYSCLK: /* I2C3 Clock is System Clock */
i2c_frequency = RCC_GetSystemClockFreq();
break;
case LL_RCC_I2C3_CLKSOURCE_HSI: /* I2C3 Clock is HSI Osc. */
if (LL_RCC_HSI_IsReady())
{
i2c_frequency = HSI_VALUE;
}
break;
case LL_RCC_I2C3_CLKSOURCE_PCLK1: /* I2C3 Clock is PCLK1 */
default:
i2c_frequency = RCC_GetPCLK1ClockFreq(RCC_GetHCLKClockFreq(RCC_GetSystemClockFreq()));
break;
}
}
#if defined(I2C4)
else
{
if (I2CxSource == LL_RCC_I2C4_CLKSOURCE)
{
/* I2C4 CLK clock frequency */
switch (LL_RCC_GetI2CClockSource(I2CxSource))
{
case LL_RCC_I2C4_CLKSOURCE_SYSCLK: /* I2C4 Clock is System Clock */
i2c_frequency = RCC_GetSystemClockFreq();
break;
case LL_RCC_I2C4_CLKSOURCE_HSI: /* I2C4 Clock is HSI Osc. */
if (LL_RCC_HSI_IsReady())
{
i2c_frequency = HSI_VALUE;
}
break;
case LL_RCC_I2C4_CLKSOURCE_PCLK1: /* I2C4 Clock is PCLK1 */
default:
i2c_frequency = RCC_GetPCLK1ClockFreq(RCC_GetHCLKClockFreq(RCC_GetSystemClockFreq()));
break;
}
}
}
#endif /* I2C4 */
return i2c_frequency;
}
/**
* @brief Return I2Sx clock frequency
* @param I2SxSource This parameter can be one of the following values:
* @arg @ref LL_RCC_I2S1_CLKSOURCE
* @retval I2S clock frequency (in Hz)
* - @ref LL_RCC_PERIPH_FREQUENCY_NO indicates that PLLI2S oscillator is not ready
*/
uint32_t LL_RCC_GetI2SClockFreq(uint32_t I2SxSource)
{
uint32_t i2s_frequency = LL_RCC_PERIPH_FREQUENCY_NO;
/* Check parameter */
assert_param(IS_LL_RCC_I2S_CLKSOURCE(I2SxSource));
if (I2SxSource == LL_RCC_I2S1_CLKSOURCE)
{
/* I2S1 CLK clock frequency */
switch (LL_RCC_GetI2SClockSource(I2SxSource))
{
case LL_RCC_I2S1_CLKSOURCE_PLLI2S: /* I2S1 Clock is PLLI2S */
if (LL_RCC_PLLI2S_IsReady())
{
i2s_frequency = RCC_PLLI2S_GetFreqDomain_I2S();
}
break;
case LL_RCC_I2S1_CLKSOURCE_PIN: /* I2S1 Clock is External clock */
default:
i2s_frequency = EXTERNAL_CLOCK_VALUE;
break;
}
}
return i2s_frequency;
}
/**
* @brief Return LPTIMx clock frequency
* @param LPTIMxSource This parameter can be one of the following values:
* @arg @ref LL_RCC_LPTIM1_CLKSOURCE
* @retval LPTIM clock frequency (in Hz)
* - @ref LL_RCC_PERIPH_FREQUENCY_NO indicates that oscillator (HSI, LSI or LSE) is not ready
*/
uint32_t LL_RCC_GetLPTIMClockFreq(uint32_t LPTIMxSource)
{
uint32_t lptim_frequency = LL_RCC_PERIPH_FREQUENCY_NO;
/* Check parameter */
assert_param(IS_LL_RCC_LPTIM_CLKSOURCE(LPTIMxSource));
if (LPTIMxSource == LL_RCC_LPTIM1_CLKSOURCE)
{
/* LPTIM1CLK clock frequency */
switch (LL_RCC_GetLPTIMClockSource(LPTIMxSource))
{
case LL_RCC_LPTIM1_CLKSOURCE_LSI: /* LPTIM1 Clock is LSI Osc. */
if (LL_RCC_LSI_IsReady())
{
lptim_frequency = LSI_VALUE;
}
break;
case LL_RCC_LPTIM1_CLKSOURCE_HSI: /* LPTIM1 Clock is HSI Osc. */
if (LL_RCC_HSI_IsReady())
{
lptim_frequency = HSI_VALUE;
}
break;
case LL_RCC_LPTIM1_CLKSOURCE_LSE: /* LPTIM1 Clock is LSE Osc. */
if (LL_RCC_LSE_IsReady())
{
lptim_frequency = LSE_VALUE;
}
break;
case LL_RCC_LPTIM1_CLKSOURCE_PCLK1: /* LPTIM1 Clock is PCLK1 */
default:
lptim_frequency = RCC_GetPCLK1ClockFreq(RCC_GetHCLKClockFreq(RCC_GetSystemClockFreq()));
break;
}
}
return lptim_frequency;
}
/**
* @brief Return SAIx clock frequency
* @param SAIxSource This parameter can be one of the following values:
* @arg @ref LL_RCC_SAI1_CLKSOURCE
* @arg @ref LL_RCC_SAI2_CLKSOURCE
* @retval SAI clock frequency (in Hz)
* - @ref LL_RCC_PERIPH_FREQUENCY_NO indicates that PLL is not ready
*/
uint32_t LL_RCC_GetSAIClockFreq(uint32_t SAIxSource)
{
uint32_t sai_frequency = LL_RCC_PERIPH_FREQUENCY_NO;
/* Check parameter */
assert_param(IS_LL_RCC_SAI_CLKSOURCE(SAIxSource));
if (SAIxSource == LL_RCC_SAI1_CLKSOURCE)
{
/* SAI1CLK clock frequency */
switch (LL_RCC_GetSAIClockSource(SAIxSource))
{
case LL_RCC_SAI1_CLKSOURCE_PLLSAI: /* PLLSAI clock used as SAI1 clock source */
if (LL_RCC_PLLSAI_IsReady())
{
sai_frequency = RCC_PLLSAI_GetFreqDomain_SAI();
}
break;
case LL_RCC_SAI1_CLKSOURCE_PLLI2S: /* PLLI2S clock used as SAI1 clock source */
if (LL_RCC_PLLI2S_IsReady())
{
sai_frequency = RCC_PLLI2S_GetFreqDomain_SAI();
}
break;
#if defined(RCC_SAI1SEL_PLLSRC_SUPPORT)
case LL_RCC_SAI1_CLKSOURCE_PLLSRC:
switch (LL_RCC_PLL_GetMainSource())
{
case LL_RCC_PLLSOURCE_HSE: /* HSE clock used as SAI1 clock source */
if (LL_RCC_HSE_IsReady())
{
sai_frequency = HSE_VALUE;
}
break;
case LL_RCC_PLLSOURCE_HSI: /* HSI clock used as SAI1 clock source */
default:
if (LL_RCC_HSI_IsReady())
{
sai_frequency = HSI_VALUE;
}
break;
}
break;
#endif /* RCC_SAI1SEL_PLLSRC_SUPPORT */
case LL_RCC_SAI1_CLKSOURCE_PIN: /* External input clock used as SAI1 clock source */
sai_frequency = EXTERNAL_SAI1_CLOCK_VALUE;
break;
default:
break;
}
}
else
{
if (SAIxSource == LL_RCC_SAI2_CLKSOURCE)
{
/* SAI2CLK clock frequency */
switch (LL_RCC_GetSAIClockSource(SAIxSource))
{
case LL_RCC_SAI2_CLKSOURCE_PLLSAI: /* PLLSAI clock used as SAI2 clock source */
if (LL_RCC_PLLSAI_IsReady())
{
sai_frequency = RCC_PLLSAI_GetFreqDomain_SAI();
}
break;
case LL_RCC_SAI2_CLKSOURCE_PLLI2S: /* PLLI2S clock used as SAI2 clock source */
if (LL_RCC_PLLI2S_IsReady())
{
sai_frequency = RCC_PLLI2S_GetFreqDomain_SAI();
}
break;
#if defined(RCC_SAI2SEL_PLLSRC_SUPPORT)
case LL_RCC_SAI2_CLKSOURCE_PLLSRC:
switch (LL_RCC_PLL_GetMainSource())
{
case LL_RCC_PLLSOURCE_HSE: /* HSE clock used as SAI2 clock source */
if (LL_RCC_HSE_IsReady())
{
sai_frequency = HSE_VALUE;
}
break;
case LL_RCC_PLLSOURCE_HSI: /* HSI clock used as SAI2 clock source */
default:
if (LL_RCC_HSI_IsReady())
{
sai_frequency = HSI_VALUE;
}
break;
}
break;
#endif /* RCC_SAI2SEL_PLLSRC_SUPPORT */
case LL_RCC_SAI2_CLKSOURCE_PIN: /* External input clock used as SAI2 clock source */
sai_frequency = EXTERNAL_SAI2_CLOCK_VALUE;
break;
default:
break;
}
}
}
return sai_frequency;
}
/**
* @brief Return SDMMCx clock frequency
* @param SDMMCxSource This parameter can be one of the following values:
* @arg @ref LL_RCC_SDMMC1_CLKSOURCE
* @arg @ref LL_RCC_SDMMC2_CLKSOURCE (*)
*
* (*) value not defined in all devices.
* @retval SDMMC clock frequency (in Hz)
* - @ref LL_RCC_PERIPH_FREQUENCY_NO indicates that oscillator PLL is not ready
*/
uint32_t LL_RCC_GetSDMMCClockFreq(uint32_t SDMMCxSource)
{
uint32_t sdmmc_frequency = LL_RCC_PERIPH_FREQUENCY_NO;
/* Check parameter */
assert_param(IS_LL_RCC_SDMMC_CLKSOURCE(SDMMCxSource));
if (SDMMCxSource == LL_RCC_SDMMC1_CLKSOURCE)
{
/* SDMMC1CLK clock frequency */
switch (LL_RCC_GetSDMMCClockSource(SDMMCxSource))
{
case LL_RCC_SDMMC1_CLKSOURCE_PLL48CLK: /* PLL48 clock used as SDMMC1 clock source */
switch (LL_RCC_GetCK48MClockSource(LL_RCC_CK48M_CLKSOURCE))
{
case LL_RCC_CK48M_CLKSOURCE_PLL: /* PLL clock used as 48Mhz domain clock */
if (LL_RCC_PLL_IsReady())
{
sdmmc_frequency = RCC_PLL_GetFreqDomain_48M();
}
break;
case LL_RCC_CK48M_CLKSOURCE_PLLSAI: /* PLLSAI clock used as 48Mhz domain clock */
default:
if (LL_RCC_PLLSAI_IsReady())
{
sdmmc_frequency = RCC_PLLSAI_GetFreqDomain_48M();
}
break;
}
break;
case LL_RCC_SDMMC1_CLKSOURCE_SYSCLK: /* PLL clock used as SDMMC1 clock source */
default:
sdmmc_frequency = RCC_GetSystemClockFreq();
break;
}
}
#if defined(SDMMC2)
else
{
/* SDMMC2CLK clock frequency */
switch (LL_RCC_GetSDMMCClockSource(SDMMCxSource))
{
case LL_RCC_SDMMC2_CLKSOURCE_PLL48CLK: /* PLL48 clock used as SDMMC2 clock source */
switch (LL_RCC_GetCK48MClockSource(LL_RCC_CK48M_CLKSOURCE))
{
case LL_RCC_CK48M_CLKSOURCE_PLL: /* PLL clock used as 48Mhz domain clock */
if (LL_RCC_PLL_IsReady())
{
sdmmc_frequency = RCC_PLL_GetFreqDomain_48M();
}
break;
case LL_RCC_CK48M_CLKSOURCE_PLLSAI: /* PLLSAI clock used as 48Mhz domain clock */
default:
if (LL_RCC_PLLSAI_IsReady())
{
sdmmc_frequency = RCC_PLLSAI_GetFreqDomain_48M();
}
break;
}
break;
case LL_RCC_SDMMC2_CLKSOURCE_SYSCLK: /* PLL clock used as SDMMC2 clock source */
default:
sdmmc_frequency = RCC_GetSystemClockFreq();
break;
}
}
#endif /* SDMMC2 */
return sdmmc_frequency;
}
/**
* @brief Return RNGx clock frequency
* @param RNGxSource This parameter can be one of the following values:
* @arg @ref LL_RCC_RNG_CLKSOURCE
* @retval RNG clock frequency (in Hz)
* - @ref LL_RCC_PERIPH_FREQUENCY_NO indicates that oscillator is not ready
*/
uint32_t LL_RCC_GetRNGClockFreq(uint32_t RNGxSource)
{
uint32_t rng_frequency = LL_RCC_PERIPH_FREQUENCY_NO;
/* Check parameter */
assert_param(IS_LL_RCC_RNG_CLKSOURCE(RNGxSource));
/* RNGCLK clock frequency */
switch (LL_RCC_GetRNGClockSource(RNGxSource))
{
case LL_RCC_RNG_CLKSOURCE_PLL: /* PLL clock used as RNG clock source */
if (LL_RCC_PLL_IsReady())
{
rng_frequency = RCC_PLL_GetFreqDomain_48M();
}
break;
case LL_RCC_RNG_CLKSOURCE_PLLSAI: /* PLLSAI clock used as RNG clock source */
default:
if (LL_RCC_PLLSAI_IsReady())
{
rng_frequency = RCC_PLLSAI_GetFreqDomain_48M();
}
break;
}
return rng_frequency;
}
#if defined(CEC)
/**
* @brief Return CEC clock frequency
* @param CECxSource This parameter can be one of the following values:
* @arg @ref LL_RCC_CEC_CLKSOURCE
* @retval CEC clock frequency (in Hz)
* - @ref LL_RCC_PERIPH_FREQUENCY_NO indicates that oscillator (HSI or LSE) is not ready
*/
uint32_t LL_RCC_GetCECClockFreq(uint32_t CECxSource)
{
uint32_t cec_frequency = LL_RCC_PERIPH_FREQUENCY_NO;
/* Check parameter */
assert_param(IS_LL_RCC_CEC_CLKSOURCE(CECxSource));
/* CECCLK clock frequency */
switch (LL_RCC_GetCECClockSource(CECxSource))
{
case LL_RCC_CEC_CLKSOURCE_LSE: /* CEC Clock is LSE Osc. */
if (LL_RCC_LSE_IsReady())
{
cec_frequency = LSE_VALUE;
}
break;
case LL_RCC_CEC_CLKSOURCE_HSI_DIV488: /* CEC Clock is HSI Osc. */
default:
if (LL_RCC_HSI_IsReady())
{
cec_frequency = HSI_VALUE/488U;
}
break;
}
return cec_frequency;
}
#endif /* CEC */
/**
* @brief Return USBx clock frequency
* @param USBxSource This parameter can be one of the following values:
* @arg @ref LL_RCC_USB_CLKSOURCE
* @retval USB clock frequency (in Hz)
*/
uint32_t LL_RCC_GetUSBClockFreq(uint32_t USBxSource)
{
uint32_t usb_frequency = LL_RCC_PERIPH_FREQUENCY_NO;
/* Check parameter */
assert_param(IS_LL_RCC_USB_CLKSOURCE(USBxSource));
/* USBCLK clock frequency */
switch (LL_RCC_GetUSBClockSource(USBxSource))
{
case LL_RCC_USB_CLKSOURCE_PLL: /* PLL clock used as USB clock source */
if (LL_RCC_PLL_IsReady())
{
usb_frequency = RCC_PLL_GetFreqDomain_48M();
}
break;
case LL_RCC_USB_CLKSOURCE_PLLSAI: /* PLLSAI clock used as USB clock source */
default:
if (LL_RCC_PLLSAI_IsReady())
{
usb_frequency = RCC_PLLSAI_GetFreqDomain_48M();
}
break;
}
return usb_frequency;
}
#if defined(DFSDM1_Channel0)
/**
* @brief Return DFSDMx clock frequency
* @param DFSDMxSource This parameter can be one of the following values:
* @arg @ref LL_RCC_DFSDM1_CLKSOURCE
* @retval DFSDM clock frequency (in Hz)
*/
uint32_t LL_RCC_GetDFSDMClockFreq(uint32_t DFSDMxSource)
{
uint32_t dfsdm_frequency = LL_RCC_PERIPH_FREQUENCY_NO;
/* Check parameter */
assert_param(IS_LL_RCC_DFSDM_CLKSOURCE(DFSDMxSource));
/* DFSDM1CLK clock frequency */
switch (LL_RCC_GetDFSDMClockSource(DFSDMxSource))
{
case LL_RCC_DFSDM1_CLKSOURCE_SYSCLK: /* DFSDM1 Clock is SYSCLK */
dfsdm_frequency = RCC_GetSystemClockFreq();
break;
case LL_RCC_DFSDM1_CLKSOURCE_PCLK2: /* DFSDM1 Clock is PCLK2 */
default:
dfsdm_frequency = RCC_GetPCLK2ClockFreq(RCC_GetHCLKClockFreq(RCC_GetSystemClockFreq()));
break;
}
return dfsdm_frequency;
}
/**
* @brief Return DFSDMx Audio clock frequency
* @param DFSDMxSource This parameter can be one of the following values:
* @arg @ref LL_RCC_DFSDM1_AUDIO_CLKSOURCE
* @retval DFSDM clock frequency (in Hz)
* - @ref LL_RCC_PERIPH_FREQUENCY_NO indicates that oscillator is not ready
*/
uint32_t LL_RCC_GetDFSDMAudioClockFreq(uint32_t DFSDMxSource)
{
uint32_t dfsdm_frequency = LL_RCC_PERIPH_FREQUENCY_NO;
/* Check parameter */
assert_param(IS_LL_RCC_DFSDM_AUDIO_CLKSOURCE(DFSDMxSource));
/* DFSDM1CLK clock frequency */
switch (LL_RCC_GetDFSDMAudioClockSource(DFSDMxSource))
{
case LL_RCC_DFSDM1_AUDIO_CLKSOURCE_SAI1: /* SAI1 clock used as DFSDM1 audio clock */
dfsdm_frequency = LL_RCC_GetSAIClockFreq(LL_RCC_SAI1_CLKSOURCE);
break;
case LL_RCC_DFSDM1_AUDIO_CLKSOURCE_SAI2: /* SAI2 clock used as DFSDM1 audio clock */
default:
dfsdm_frequency = LL_RCC_GetSAIClockFreq(LL_RCC_SAI2_CLKSOURCE);
break;
}
return dfsdm_frequency;
}
#endif /* DFSDM1_Channel0 */
#if defined(DSI)
/**
* @brief Return DSI clock frequency
* @param DSIxSource This parameter can be one of the following values:
* @arg @ref LL_RCC_DSI_CLKSOURCE
* @retval DSI clock frequency (in Hz)
* - @ref LL_RCC_PERIPH_FREQUENCY_NO indicates that oscillator is not ready
* - @ref LL_RCC_PERIPH_FREQUENCY_NA indicates that external clock is used
*/
uint32_t LL_RCC_GetDSIClockFreq(uint32_t DSIxSource)
{
uint32_t dsi_frequency = LL_RCC_PERIPH_FREQUENCY_NO;
/* Check parameter */
assert_param(IS_LL_RCC_DSI_CLKSOURCE(DSIxSource));
/* DSICLK clock frequency */
switch (LL_RCC_GetDSIClockSource(DSIxSource))
{
case LL_RCC_DSI_CLKSOURCE_PLL: /* DSI Clock is PLL Osc. */
if (LL_RCC_PLL_IsReady())
{
dsi_frequency = RCC_PLL_GetFreqDomain_DSI();
}
break;
case LL_RCC_DSI_CLKSOURCE_PHY: /* DSI Clock is DSI physical clock. */
default:
dsi_frequency = LL_RCC_PERIPH_FREQUENCY_NA;
break;
}
return dsi_frequency;
}
#endif /* DSI */
#if defined(LTDC)
/**
* @brief Return LTDC clock frequency
* @param LTDCxSource This parameter can be one of the following values:
* @arg @ref LL_RCC_LTDC_CLKSOURCE
* @retval LTDC clock frequency (in Hz)
* - @ref LL_RCC_PERIPH_FREQUENCY_NO indicates that oscillator PLLSAI is not ready
*/
uint32_t LL_RCC_GetLTDCClockFreq(uint32_t LTDCxSource)
{
uint32_t ltdc_frequency = LL_RCC_PERIPH_FREQUENCY_NO;
/* Check parameter */
assert_param(IS_LL_RCC_LTDC_CLKSOURCE(LTDCxSource));
if (LL_RCC_PLLSAI_IsReady())
{
ltdc_frequency = RCC_PLLSAI_GetFreqDomain_LTDC();
}
return ltdc_frequency;
}
#endif /* LTDC */
#if defined(SPDIFRX)
/**
* @brief Return SPDIFRX clock frequency
* @param SPDIFRXxSource This parameter can be one of the following values:
* @arg @ref LL_RCC_SPDIFRX1_CLKSOURCE
* @retval SPDIFRX clock frequency (in Hz)
* - @ref LL_RCC_PERIPH_FREQUENCY_NO indicates that oscillator is not ready
*/
uint32_t LL_RCC_GetSPDIFRXClockFreq(uint32_t SPDIFRXxSource)
{
uint32_t spdifrx_frequency = LL_RCC_PERIPH_FREQUENCY_NO;
/* Check parameter */
assert_param(IS_LL_RCC_SPDIFRX_CLKSOURCE(SPDIFRXxSource));
if (LL_RCC_PLLI2S_IsReady())
{
spdifrx_frequency = RCC_PLLI2S_GetFreqDomain_SPDIFRX();
}
return spdifrx_frequency;
}
#endif /* SPDIFRX */
/**
* @}
*/
/**
* @}
*/
/** @addtogroup RCC_LL_Private_Functions
* @{
*/
/**
* @brief Return SYSTEM clock frequency
* @retval SYSTEM clock frequency (in Hz)
*/
uint32_t RCC_GetSystemClockFreq(void)
{
uint32_t frequency = 0U;
/* Get SYSCLK source -------------------------------------------------------*/
switch (LL_RCC_GetSysClkSource())
{
case LL_RCC_SYS_CLKSOURCE_STATUS_HSI: /* HSI used as system clock source */
frequency = HSI_VALUE;
break;
case LL_RCC_SYS_CLKSOURCE_STATUS_HSE: /* HSE used as system clock source */
frequency = HSE_VALUE;
break;
case LL_RCC_SYS_CLKSOURCE_STATUS_PLL: /* PLL used as system clock source */
frequency = RCC_PLL_GetFreqDomain_SYS();
break;
default:
frequency = HSI_VALUE;
break;
}
return frequency;
}
/**
* @brief Return HCLK clock frequency
* @param SYSCLK_Frequency SYSCLK clock frequency
* @retval HCLK clock frequency (in Hz)
*/
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)
*/
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)
*/
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)
*/
uint32_t RCC_PLL_GetFreqDomain_SYS(void)
{
uint32_t pllinputfreq = 0U, pllsource = 0U;
/* PLL_VCO = (HSE_VALUE or HSI_VALUE / PLLM) * PLLN
SYSCLK = PLL_VCO / PLLP
*/
pllsource = LL_RCC_PLL_GetMainSource();
switch (pllsource)
{
case LL_RCC_PLLSOURCE_HSI: /* HSI used as PLL clock source */
pllinputfreq = HSI_VALUE;
break;
case LL_RCC_PLLSOURCE_HSE: /* HSE used as PLL clock source */
pllinputfreq = HSE_VALUE;
break;
default:
pllinputfreq = HSI_VALUE;
break;
}
return __LL_RCC_CALC_PLLCLK_FREQ(pllinputfreq, LL_RCC_PLL_GetDivider(),
LL_RCC_PLL_GetN(), LL_RCC_PLL_GetP());
}
/**
* @brief Return PLL clock frequency used for 48 MHz domain
* @retval PLL clock frequency (in Hz)
*/
uint32_t RCC_PLL_GetFreqDomain_48M(void)
{
uint32_t pllinputfreq = 0U, pllsource = 0U;
/* PLL_VCO = (HSE_VALUE or HSI_VALUE / PLLM ) * PLLN
48M Domain clock = PLL_VCO / PLLQ
*/
pllsource = LL_RCC_PLL_GetMainSource();
switch (pllsource)
{
case LL_RCC_PLLSOURCE_HSI: /* HSI used as PLL clock source */
pllinputfreq = HSI_VALUE;
break;
case LL_RCC_PLLSOURCE_HSE: /* HSE used as PLL clock source */
pllinputfreq = HSE_VALUE;
break;
default:
pllinputfreq = HSI_VALUE;
break;
}
return __LL_RCC_CALC_PLLCLK_48M_FREQ(pllinputfreq, LL_RCC_PLL_GetDivider(),
LL_RCC_PLL_GetN(), LL_RCC_PLL_GetQ());
}
#if defined(DSI)
/**
* @brief Return PLL clock frequency used for DSI clock
* @retval PLL clock frequency (in Hz)
*/
uint32_t RCC_PLL_GetFreqDomain_DSI(void)
{
uint32_t pllinputfreq = 0U, pllsource = 0U;
/* PLL_VCO = (HSE_VALUE or HSI_VALUE / PLLM) * PLLN
DSICLK = PLL_VCO / PLLR
*/
pllsource = LL_RCC_PLL_GetMainSource();
switch (pllsource)
{
case LL_RCC_PLLSOURCE_HSE: /* HSE used as PLL clock source */
pllinputfreq = HSE_VALUE;
break;
case LL_RCC_PLLSOURCE_HSI: /* HSI used as PLL clock source */
default:
pllinputfreq = HSI_VALUE;
break;
}
return __LL_RCC_CALC_PLLCLK_DSI_FREQ(pllinputfreq, LL_RCC_PLL_GetDivider(),
LL_RCC_PLL_GetN(), LL_RCC_PLL_GetR());
}
#endif /* DSI */
/**
* @brief Return PLLSAI clock frequency used for SAI1 and SAI2 domains
* @retval PLLSAI clock frequency (in Hz)
*/
uint32_t RCC_PLLSAI_GetFreqDomain_SAI(void)
{
uint32_t pllinputfreq = 0U, pllsource = 0U;
/* PLLSAI_VCO = (HSE_VALUE or HSI_VALUE / PLLM) * PLLSAIN
SAI1 and SAI2 domains clock = (PLLSAI_VCO / PLLSAIQ) / PLLSAIDIVQ
*/
pllsource = LL_RCC_PLL_GetMainSource();
switch (pllsource)
{
case LL_RCC_PLLSOURCE_HSI: /* HSI used as PLLSAI clock source */
pllinputfreq = HSI_VALUE;
break;
case LL_RCC_PLLSOURCE_HSE: /* HSE used as PLLSAI clock source */
pllinputfreq = HSE_VALUE;
break;
default:
pllinputfreq = HSI_VALUE;
break;
}
return __LL_RCC_CALC_PLLSAI_SAI_FREQ(pllinputfreq, LL_RCC_PLL_GetDivider(),
LL_RCC_PLLSAI_GetN(), LL_RCC_PLLSAI_GetQ(), LL_RCC_PLLSAI_GetDIVQ());
}
/**
* @brief Return PLLSAI clock frequency used for 48Mhz domain
* @retval PLLSAI clock frequency (in Hz)
*/
uint32_t RCC_PLLSAI_GetFreqDomain_48M(void)
{
uint32_t pllinputfreq = 0U, pllsource = 0U;
/* PLLSAI_VCO = (HSE_VALUE or HSI_VALUE / PLLM) * PLLSAIN
48M Domain clock = PLLSAI_VCO / PLLSAIP
*/
pllsource = LL_RCC_PLL_GetMainSource();
switch (pllsource)
{
case LL_RCC_PLLSOURCE_HSI: /* HSI used as PLLSAI clock source */
pllinputfreq = HSI_VALUE;
break;
case LL_RCC_PLLSOURCE_HSE: /* HSE used as PLLSAI clock source */
pllinputfreq = HSE_VALUE;
break;
default:
pllinputfreq = HSI_VALUE;
break;
}
return __LL_RCC_CALC_PLLSAI_48M_FREQ(pllinputfreq, LL_RCC_PLL_GetDivider(),
LL_RCC_PLLSAI_GetN(), LL_RCC_PLLSAI_GetP());
}
#if defined(LTDC)
/**
* @brief Return PLLSAI clock frequency used for LTDC domain
* @retval PLLSAI clock frequency (in Hz)
*/
uint32_t RCC_PLLSAI_GetFreqDomain_LTDC(void)
{
uint32_t pllinputfreq = 0U, pllsource = 0U;
/* PLLSAI_VCO = (HSE_VALUE or HSI_VALUE / PLLM) * PLLSAIN
LTDC Domain clock = (PLLSAI_VCO / PLLSAIR) / PLLSAIDIVR
*/
pllsource = LL_RCC_PLL_GetMainSource();
switch (pllsource)
{
case LL_RCC_PLLSOURCE_HSI: /* HSI used as PLLSAI clock source */
pllinputfreq = HSI_VALUE;
break;
case LL_RCC_PLLSOURCE_HSE: /* HSE used as PLLSAI clock source */
pllinputfreq = HSE_VALUE;
break;
default:
pllinputfreq = HSI_VALUE;
break;
}
return __LL_RCC_CALC_PLLSAI_LTDC_FREQ(pllinputfreq, LL_RCC_PLL_GetDivider(),
LL_RCC_PLLSAI_GetN(), LL_RCC_PLLSAI_GetR(), LL_RCC_PLLSAI_GetDIVR());
}
#endif /* LTDC */
/**
* @brief Return PLLI2S clock frequency used for SAI1 and SAI2 domains
* @retval PLLI2S clock frequency (in Hz)
*/
uint32_t RCC_PLLI2S_GetFreqDomain_SAI(void)
{
uint32_t pllinputfreq = 0U, pllsource = 0U;
/* PLLI2S_VCO = (HSE_VALUE or HSI_VALUE / PLLM) * PLLI2SN
SAI1 and SAI2 domains clock = (PLLI2S_VCO / PLLI2SQ) / PLLI2SDIVQ
*/
pllsource = LL_RCC_PLL_GetMainSource();
switch (pllsource)
{
case LL_RCC_PLLSOURCE_HSI: /* HSI used as PLLI2S clock source */
pllinputfreq = HSI_VALUE;
break;
case LL_RCC_PLLSOURCE_HSE: /* HSE used as PLLI2S clock source */
pllinputfreq = HSE_VALUE;
break;
default:
pllinputfreq = HSI_VALUE;
break;
}
return __LL_RCC_CALC_PLLI2S_SAI_FREQ(pllinputfreq, LL_RCC_PLL_GetDivider(),
LL_RCC_PLLI2S_GetN(), LL_RCC_PLLI2S_GetQ(), LL_RCC_PLLI2S_GetDIVQ());
}
#if defined(SPDIFRX)
/**
* @brief Return PLLI2S clock frequency used for SPDIFRX domain
* @retval PLLI2S clock frequency (in Hz)
*/
uint32_t RCC_PLLI2S_GetFreqDomain_SPDIFRX(void)
{
uint32_t pllinputfreq = 0U, pllsource = 0U;
/* PLLI2S_VCO = (HSE_VALUE or HSI_VALUE / PLLM) * PLLI2SN
SPDIFRX Domain clock = PLLI2S_VCO / PLLI2SP
*/
pllsource = LL_RCC_PLL_GetMainSource();
switch (pllsource)
{
case LL_RCC_PLLSOURCE_HSI: /* HSI used as PLLI2S clock source */
pllinputfreq = HSI_VALUE;
break;
case LL_RCC_PLLSOURCE_HSE: /* HSE used as PLLI2S clock source */
pllinputfreq = HSE_VALUE;
break;
default:
pllinputfreq = HSI_VALUE;
break;
}
return __LL_RCC_CALC_PLLI2S_SPDIFRX_FREQ(pllinputfreq, LL_RCC_PLL_GetDivider(),
LL_RCC_PLLI2S_GetN(), LL_RCC_PLLI2S_GetP());
}
#endif /* SPDIFRX */
/**
* @brief Return PLLI2S clock frequency used for I2S domain
* @retval PLLI2S clock frequency (in Hz)
*/
uint32_t RCC_PLLI2S_GetFreqDomain_I2S(void)
{
uint32_t pllinputfreq = 0U, pllsource = 0U;
/* PLLI2S_VCO = (HSE_VALUE or HSI_VALUE / PLLM) * PLLI2SN
I2S Domain clock = PLLI2S_VCO / PLLI2SR
*/
pllsource = LL_RCC_PLL_GetMainSource();
switch (pllsource)
{
case LL_RCC_PLLSOURCE_HSE: /* HSE used as PLLI2S clock source */
pllinputfreq = HSE_VALUE;
break;
case LL_RCC_PLLSOURCE_HSI: /* HSI used as PLLI2S clock source */
default:
pllinputfreq = HSI_VALUE;
break;
}
return __LL_RCC_CALC_PLLI2S_I2S_FREQ(pllinputfreq, LL_RCC_PLL_GetDivider(),
LL_RCC_PLLI2S_GetN(), LL_RCC_PLLI2S_GetR());
}
/**
* @}
*/
/**
* @}
*/
#endif /* defined(RCC) */
/**
* @}
*/
#endif /* USE_FULL_LL_DRIVER */
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