/** ****************************************************************************** * @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 */