/** ****************************************************************************** * @file stm32f7xx_hal_rcc_ex.c * @author MCD Application Team * @version V1.1.2 * @date 23-September-2016 * @brief Extension RCC HAL module driver. * This file provides firmware functions to manage the following * functionalities RCC extension peripheral: * + Extended Peripheral Control functions * ****************************************************************************** * @attention * *

© COPYRIGHT(c) 2016 STMicroelectronics

* * Redistribution and use in source and binary forms, with or without modification, * are permitted provided that the following conditions are met: * 1. Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * 3. Neither the name of STMicroelectronics nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * ****************************************************************************** */ /* Includes ------------------------------------------------------------------*/ #include "stm32f7xx_hal.h" /** @addtogroup STM32F7xx_HAL_Driver * @{ */ /** @defgroup RCCEx RCCEx * @brief RCCEx HAL module driver * @{ */ #ifdef HAL_RCC_MODULE_ENABLED /* Private typedef -----------------------------------------------------------*/ /* Private define ------------------------------------------------------------*/ /** @defgroup RCCEx_Private_Defines RCCEx Private Defines * @{ */ #define PLLI2S_TIMEOUT_VALUE 100 /* Timeout value fixed to 100 ms */ #define PLLSAI_TIMEOUT_VALUE 100 /* Timeout value fixed to 100 ms */ /** * @} */ /* Private macro -------------------------------------------------------------*/ /** @defgroup RCCEx_Private_Macros RCCEx Private Macros * @{ */ /** * @} */ /** @defgroup RCCEx_Private_Macros RCCEx Private Macros * @{ */ /** * @} */ /* Private variables ---------------------------------------------------------*/ /* Private function prototypes -----------------------------------------------*/ /* Private functions ---------------------------------------------------------*/ /** @defgroup RCCEx_Exported_Functions RCCEx Exported Functions * @{ */ /** @defgroup RCCEx_Exported_Functions_Group1 Extended Peripheral Control functions * @brief Extended Peripheral Control functions * @verbatim =============================================================================== ##### Extended Peripheral Control functions ##### =============================================================================== [..] This subsection provides a set of functions allowing to control the RCC Clocks frequencies. [..] (@) Important note: Care must be taken when HAL_RCCEx_PeriphCLKConfig() is used to select the RTC clock source; in this case the Backup domain will be reset in order to modify the RTC Clock source, as consequence RTC registers (including the backup registers) and RCC_BDCR register will be set to their reset values. @endverbatim * @{ */ #if defined (STM32F745xx) || defined (STM32F746xx) || defined (STM32F756xx) || defined (STM32F765xx) || \ defined (STM32F767xx) || defined (STM32F769xx) || defined (STM32F777xx) || defined (STM32F779xx) /** * @brief Initializes the RCC extended peripherals clocks according to the specified * parameters in the RCC_PeriphCLKInitTypeDef. * @param PeriphClkInit: pointer to an RCC_PeriphCLKInitTypeDef structure that * contains the configuration information for the Extended Peripherals * clocks(I2S, SAI, LTDC, RTC, TIM, UARTs, USARTs, LTPIM, SDMMC...). * * @note Care must be taken when HAL_RCCEx_PeriphCLKConfig() is used to select * the RTC clock source; in this case the Backup domain will be reset in * order to modify the RTC Clock source, as consequence RTC registers (including * the backup registers) are set to their reset values. * * @retval HAL status */ HAL_StatusTypeDef HAL_RCCEx_PeriphCLKConfig(RCC_PeriphCLKInitTypeDef *PeriphClkInit) { uint32_t tickstart = 0; uint32_t tmpreg0 = 0; uint32_t tmpreg1 = 0; uint32_t plli2sused = 0; uint32_t pllsaiused = 0; /* Check the parameters */ assert_param(IS_RCC_PERIPHCLOCK(PeriphClkInit->PeriphClockSelection)); /*----------------------------------- I2S configuration ----------------------------------*/ if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_I2S) == (RCC_PERIPHCLK_I2S)) { /* Check the parameters */ assert_param(IS_RCC_I2SCLKSOURCE(PeriphClkInit->I2sClockSelection)); /* Configure I2S Clock source */ __HAL_RCC_I2S_CONFIG(PeriphClkInit->I2sClockSelection); /* Enable the PLLI2S when it's used as clock source for I2S */ if(PeriphClkInit->I2sClockSelection == RCC_I2SCLKSOURCE_PLLI2S) { plli2sused = 1; } } /*------------------------------------ SAI1 configuration --------------------------------------*/ if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_SAI1) == (RCC_PERIPHCLK_SAI1)) { /* Check the parameters */ assert_param(IS_RCC_SAI1CLKSOURCE(PeriphClkInit->Sai1ClockSelection)); /* Configure SAI1 Clock source */ __HAL_RCC_SAI1_CONFIG(PeriphClkInit->Sai1ClockSelection); /* Enable the PLLI2S when it's used as clock source for SAI */ if(PeriphClkInit->Sai1ClockSelection == RCC_SAI1CLKSOURCE_PLLI2S) { plli2sused = 1; } /* Enable the PLLSAI when it's used as clock source for SAI */ if(PeriphClkInit->Sai1ClockSelection == RCC_SAI1CLKSOURCE_PLLSAI) { pllsaiused = 1; } } /*------------------------------------ SAI2 configuration --------------------------------------*/ if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_SAI2) == (RCC_PERIPHCLK_SAI2)) { /* Check the parameters */ assert_param(IS_RCC_SAI2CLKSOURCE(PeriphClkInit->Sai2ClockSelection)); /* Configure SAI2 Clock source */ __HAL_RCC_SAI2_CONFIG(PeriphClkInit->Sai2ClockSelection); /* Enable the PLLI2S when it's used as clock source for SAI */ if(PeriphClkInit->Sai2ClockSelection == RCC_SAI2CLKSOURCE_PLLI2S) { plli2sused = 1; } /* Enable the PLLSAI when it's used as clock source for SAI */ if(PeriphClkInit->Sai2ClockSelection == RCC_SAI2CLKSOURCE_PLLSAI) { pllsaiused = 1; } } /*-------------------------------------- SPDIF-RX Configuration -----------------------------------*/ if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_SPDIFRX) == RCC_PERIPHCLK_SPDIFRX) { plli2sused = 1; } /*------------------------------------ RTC configuration --------------------------------------*/ if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_RTC) == (RCC_PERIPHCLK_RTC)) { /* Check for RTC Parameters used to output RTCCLK */ assert_param(IS_RCC_RTCCLKSOURCE(PeriphClkInit->RTCClockSelection)); /* Enable Power Clock*/ __HAL_RCC_PWR_CLK_ENABLE(); /* Enable write access to Backup domain */ PWR->CR1 |= PWR_CR1_DBP; /* Get Start Tick*/ tickstart = HAL_GetTick(); /* Wait for Backup domain Write protection disable */ while((PWR->CR1 & PWR_CR1_DBP) == RESET) { if((HAL_GetTick() - tickstart) > RCC_DBP_TIMEOUT_VALUE) { return HAL_TIMEOUT; } } /* Reset the Backup domain only if the RTC Clock source selection is modified */ tmpreg0 = (RCC->BDCR & RCC_BDCR_RTCSEL); if((tmpreg0 != 0x00000000U) && (tmpreg0 != (PeriphClkInit->RTCClockSelection & RCC_BDCR_RTCSEL))) { /* Store the content of BDCR register before the reset of Backup Domain */ tmpreg0 = (RCC->BDCR & ~(RCC_BDCR_RTCSEL)); /* RTC Clock selection can be changed only if the Backup Domain is reset */ __HAL_RCC_BACKUPRESET_FORCE(); __HAL_RCC_BACKUPRESET_RELEASE(); /* Restore the Content of BDCR register */ RCC->BDCR = tmpreg0; /* Wait for LSE reactivation if LSE was enable prior to Backup Domain reset */ if (HAL_IS_BIT_SET(RCC->BDCR, RCC_BDCR_LSEON)) { /* Get Start Tick*/ tickstart = HAL_GetTick(); /* Wait till LSE is ready */ while(__HAL_RCC_GET_FLAG(RCC_FLAG_LSERDY) == RESET) { if((HAL_GetTick() - tickstart ) > RCC_LSE_TIMEOUT_VALUE) { return HAL_TIMEOUT; } } } } __HAL_RCC_RTC_CONFIG(PeriphClkInit->RTCClockSelection); } /*------------------------------------ TIM configuration --------------------------------------*/ if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_TIM) == (RCC_PERIPHCLK_TIM)) { /* Check the parameters */ assert_param(IS_RCC_TIMPRES(PeriphClkInit->TIMPresSelection)); /* Configure Timer Prescaler */ __HAL_RCC_TIMCLKPRESCALER(PeriphClkInit->TIMPresSelection); } /*-------------------------------------- I2C1 Configuration -----------------------------------*/ if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_I2C1) == RCC_PERIPHCLK_I2C1) { /* Check the parameters */ assert_param(IS_RCC_I2C1CLKSOURCE(PeriphClkInit->I2c1ClockSelection)); /* Configure the I2C1 clock source */ __HAL_RCC_I2C1_CONFIG(PeriphClkInit->I2c1ClockSelection); } /*-------------------------------------- I2C2 Configuration -----------------------------------*/ if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_I2C2) == RCC_PERIPHCLK_I2C2) { /* Check the parameters */ assert_param(IS_RCC_I2C2CLKSOURCE(PeriphClkInit->I2c2ClockSelection)); /* Configure the I2C2 clock source */ __HAL_RCC_I2C2_CONFIG(PeriphClkInit->I2c2ClockSelection); } /*-------------------------------------- I2C3 Configuration -----------------------------------*/ if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_I2C3) == RCC_PERIPHCLK_I2C3) { /* Check the parameters */ assert_param(IS_RCC_I2C3CLKSOURCE(PeriphClkInit->I2c3ClockSelection)); /* Configure the I2C3 clock source */ __HAL_RCC_I2C3_CONFIG(PeriphClkInit->I2c3ClockSelection); } /*-------------------------------------- I2C4 Configuration -----------------------------------*/ if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_I2C4) == RCC_PERIPHCLK_I2C4) { /* Check the parameters */ assert_param(IS_RCC_I2C4CLKSOURCE(PeriphClkInit->I2c4ClockSelection)); /* Configure the I2C4 clock source */ __HAL_RCC_I2C4_CONFIG(PeriphClkInit->I2c4ClockSelection); } /*-------------------------------------- USART1 Configuration -----------------------------------*/ if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_USART1) == RCC_PERIPHCLK_USART1) { /* Check the parameters */ assert_param(IS_RCC_USART1CLKSOURCE(PeriphClkInit->Usart1ClockSelection)); /* Configure the USART1 clock source */ __HAL_RCC_USART1_CONFIG(PeriphClkInit->Usart1ClockSelection); } /*-------------------------------------- USART2 Configuration -----------------------------------*/ if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_USART2) == RCC_PERIPHCLK_USART2) { /* Check the parameters */ assert_param(IS_RCC_USART2CLKSOURCE(PeriphClkInit->Usart2ClockSelection)); /* Configure the USART2 clock source */ __HAL_RCC_USART2_CONFIG(PeriphClkInit->Usart2ClockSelection); } /*-------------------------------------- USART3 Configuration -----------------------------------*/ if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_USART3) == RCC_PERIPHCLK_USART3) { /* Check the parameters */ assert_param(IS_RCC_USART3CLKSOURCE(PeriphClkInit->Usart3ClockSelection)); /* Configure the USART3 clock source */ __HAL_RCC_USART3_CONFIG(PeriphClkInit->Usart3ClockSelection); } /*-------------------------------------- UART4 Configuration -----------------------------------*/ if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_UART4) == RCC_PERIPHCLK_UART4) { /* Check the parameters */ assert_param(IS_RCC_UART4CLKSOURCE(PeriphClkInit->Uart4ClockSelection)); /* Configure the UART4 clock source */ __HAL_RCC_UART4_CONFIG(PeriphClkInit->Uart4ClockSelection); } /*-------------------------------------- UART5 Configuration -----------------------------------*/ if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_UART5) == RCC_PERIPHCLK_UART5) { /* Check the parameters */ assert_param(IS_RCC_UART5CLKSOURCE(PeriphClkInit->Uart5ClockSelection)); /* Configure the UART5 clock source */ __HAL_RCC_UART5_CONFIG(PeriphClkInit->Uart5ClockSelection); } /*-------------------------------------- USART6 Configuration -----------------------------------*/ if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_USART6) == RCC_PERIPHCLK_USART6) { /* Check the parameters */ assert_param(IS_RCC_USART6CLKSOURCE(PeriphClkInit->Usart6ClockSelection)); /* Configure the USART6 clock source */ __HAL_RCC_USART6_CONFIG(PeriphClkInit->Usart6ClockSelection); } /*-------------------------------------- UART7 Configuration -----------------------------------*/ if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_UART7) == RCC_PERIPHCLK_UART7) { /* Check the parameters */ assert_param(IS_RCC_UART7CLKSOURCE(PeriphClkInit->Uart7ClockSelection)); /* Configure the UART7 clock source */ __HAL_RCC_UART7_CONFIG(PeriphClkInit->Uart7ClockSelection); } /*-------------------------------------- UART8 Configuration -----------------------------------*/ if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_UART8) == RCC_PERIPHCLK_UART8) { /* Check the parameters */ assert_param(IS_RCC_UART8CLKSOURCE(PeriphClkInit->Uart8ClockSelection)); /* Configure the UART8 clock source */ __HAL_RCC_UART8_CONFIG(PeriphClkInit->Uart8ClockSelection); } /*--------------------------------------- CEC Configuration -----------------------------------*/ if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_CEC) == RCC_PERIPHCLK_CEC) { /* Check the parameters */ assert_param(IS_RCC_CECCLKSOURCE(PeriphClkInit->CecClockSelection)); /* Configure the CEC clock source */ __HAL_RCC_CEC_CONFIG(PeriphClkInit->CecClockSelection); } /*-------------------------------------- CK48 Configuration -----------------------------------*/ if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_CLK48) == RCC_PERIPHCLK_CLK48) { /* Check the parameters */ assert_param(IS_RCC_CLK48SOURCE(PeriphClkInit->Clk48ClockSelection)); /* Configure the CLK48 source */ __HAL_RCC_CLK48_CONFIG(PeriphClkInit->Clk48ClockSelection); /* Enable the PLLSAI when it's used as clock source for CK48 */ if(PeriphClkInit->Clk48ClockSelection == RCC_CLK48SOURCE_PLLSAIP) { pllsaiused = 1; } } /*-------------------------------------- LTDC Configuration -----------------------------------*/ #if defined(STM32F746xx) || defined(STM32F756xx) || defined (STM32F767xx) || defined (STM32F769xx) || defined (STM32F777xx) || defined (STM32F779xx) if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_LTDC) == RCC_PERIPHCLK_LTDC) { pllsaiused = 1; } #endif /* STM32F746xx || STM32F756xx || STM32F767xx || STM32F769xx || STM32F777xx || STM32F779xx */ /*-------------------------------------- LPTIM1 Configuration -----------------------------------*/ if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_LPTIM1) == RCC_PERIPHCLK_LPTIM1) { /* Check the parameters */ assert_param(IS_RCC_LPTIM1CLK(PeriphClkInit->Lptim1ClockSelection)); /* Configure the LTPIM1 clock source */ __HAL_RCC_LPTIM1_CONFIG(PeriphClkInit->Lptim1ClockSelection); } /*------------------------------------- SDMMC1 Configuration ------------------------------------*/ if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_SDMMC1) == RCC_PERIPHCLK_SDMMC1) { /* Check the parameters */ assert_param(IS_RCC_SDMMC1CLKSOURCE(PeriphClkInit->Sdmmc1ClockSelection)); /* Configure the SDMMC1 clock source */ __HAL_RCC_SDMMC1_CONFIG(PeriphClkInit->Sdmmc1ClockSelection); } #if defined (STM32F765xx) || defined (STM32F767xx) || defined (STM32F769xx) || defined (STM32F777xx) || defined (STM32F779xx) /*------------------------------------- SDMMC2 Configuration ------------------------------------*/ if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_SDMMC2) == RCC_PERIPHCLK_SDMMC2) { /* Check the parameters */ assert_param(IS_RCC_SDMMC2CLKSOURCE(PeriphClkInit->Sdmmc2ClockSelection)); /* Configure the SDMMC2 clock source */ __HAL_RCC_SDMMC2_CONFIG(PeriphClkInit->Sdmmc2ClockSelection); } /*------------------------------------- DFSDM1 Configuration -------------------------------------*/ if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_DFSDM1) == RCC_PERIPHCLK_DFSDM1) { /* Check the parameters */ assert_param(IS_RCC_DFSDM1CLKSOURCE(PeriphClkInit->Dfsdm1ClockSelection)); /* Configure the DFSDM1 interface clock source */ __HAL_RCC_DFSDM1_CONFIG(PeriphClkInit->Dfsdm1ClockSelection); } /*------------------------------------- DFSDM AUDIO Configuration -------------------------------------*/ if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_DFSDM1_AUDIO) == RCC_PERIPHCLK_DFSDM1_AUDIO) { /* Check the parameters */ assert_param(IS_RCC_DFSDM1AUDIOCLKSOURCE(PeriphClkInit->Dfsdm1AudioClockSelection)); /* Configure the DFSDM interface clock source */ __HAL_RCC_DFSDM1AUDIO_CONFIG(PeriphClkInit->Dfsdm1AudioClockSelection); } #endif /* STM32F767xx || STM32F769xx || STM32F777xx || STM32F779xx */ /*-------------------------------------- PLLI2S Configuration ---------------------------------*/ /* PLLI2S is configured when a peripheral will use it as source clock : SAI1, SAI2, I2S or SPDIF-RX */ if((plli2sused == 1) || (PeriphClkInit->PeriphClockSelection == RCC_PERIPHCLK_PLLI2S)) { /* Disable the PLLI2S */ __HAL_RCC_PLLI2S_DISABLE(); /* Get Start Tick*/ tickstart = HAL_GetTick(); /* Wait till PLLI2S is disabled */ while(__HAL_RCC_GET_FLAG(RCC_FLAG_PLLI2SRDY) != RESET) { if((HAL_GetTick() - tickstart) > PLLI2S_TIMEOUT_VALUE) { /* return in case of Timeout detected */ return HAL_TIMEOUT; } } /* check for common PLLI2S Parameters */ assert_param(IS_RCC_PLLI2SN_VALUE(PeriphClkInit->PLLI2S.PLLI2SN)); /*----------------- In Case of PLLI2S is selected as source clock for I2S -------------------*/ if(((((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_I2S) == RCC_PERIPHCLK_I2S) && (PeriphClkInit->I2sClockSelection == RCC_I2SCLKSOURCE_PLLI2S))) { /* check for Parameters */ assert_param(IS_RCC_PLLI2SR_VALUE(PeriphClkInit->PLLI2S.PLLI2SR)); /* Read PLLI2SP and PLLI2SQ value from PLLI2SCFGR register (this value is not needed for I2S configuration) */ tmpreg0 = ((RCC->PLLI2SCFGR & RCC_PLLI2SCFGR_PLLI2SP) >> POSITION_VAL(RCC_PLLI2SCFGR_PLLI2SP)); tmpreg1 = ((RCC->PLLI2SCFGR & RCC_PLLI2SCFGR_PLLI2SQ) >> POSITION_VAL(RCC_PLLI2SCFGR_PLLI2SQ)); /* Configure the PLLI2S division factors */ /* PLLI2S_VCO = f(VCO clock) = f(PLLI2S clock input) x (PLLI2SN/PLLM) */ /* I2SCLK = f(PLLI2S clock output) = f(VCO clock) / PLLI2SR */ __HAL_RCC_PLLI2S_CONFIG(PeriphClkInit->PLLI2S.PLLI2SN , tmpreg0, tmpreg1, PeriphClkInit->PLLI2S.PLLI2SR); } /*----------------- In Case of PLLI2S is selected as source clock for SAI -------------------*/ if(((((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_SAI1) == RCC_PERIPHCLK_SAI1) && (PeriphClkInit->Sai1ClockSelection == RCC_SAI1CLKSOURCE_PLLI2S)) || ((((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_SAI2) == RCC_PERIPHCLK_SAI2) && (PeriphClkInit->Sai2ClockSelection == RCC_SAI2CLKSOURCE_PLLI2S))) { /* Check for PLLI2S Parameters */ assert_param(IS_RCC_PLLI2SQ_VALUE(PeriphClkInit->PLLI2S.PLLI2SQ)); /* Check for PLLI2S/DIVQ parameters */ assert_param(IS_RCC_PLLI2S_DIVQ_VALUE(PeriphClkInit->PLLI2SDivQ)); /* Read PLLI2SP and PLLI2SR values from PLLI2SCFGR register (this value is not needed for SAI configuration) */ tmpreg0 = ((RCC->PLLI2SCFGR & RCC_PLLI2SCFGR_PLLI2SP) >> POSITION_VAL(RCC_PLLI2SCFGR_PLLI2SP)); tmpreg1 = ((RCC->PLLI2SCFGR & RCC_PLLI2SCFGR_PLLI2SR) >> POSITION_VAL(RCC_PLLI2SCFGR_PLLI2SR)); /* Configure the PLLI2S division factors */ /* PLLI2S_VCO Input = PLL_SOURCE/PLLM */ /* PLLI2S_VCO Output = PLLI2S_VCO Input * PLLI2SN */ /* SAI_CLK(first level) = PLLI2S_VCO Output/PLLI2SQ */ __HAL_RCC_PLLI2S_CONFIG(PeriphClkInit->PLLI2S.PLLI2SN, tmpreg0, PeriphClkInit->PLLI2S.PLLI2SQ, tmpreg1); /* SAI_CLK_x = SAI_CLK(first level)/PLLI2SDIVQ */ __HAL_RCC_PLLI2S_PLLSAICLKDIVQ_CONFIG(PeriphClkInit->PLLI2SDivQ); } /*----------------- In Case of PLLI2S is selected as source clock for SPDIF-RX -------------------*/ if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_SPDIFRX) == RCC_PERIPHCLK_SPDIFRX) { /* check for Parameters */ assert_param(IS_RCC_PLLI2SP_VALUE(PeriphClkInit->PLLI2S.PLLI2SP)); /* Read PLLI2SR value from PLLI2SCFGR register (this value is not needed for SPDIF-RX configuration) */ tmpreg0 = ((RCC->PLLI2SCFGR & RCC_PLLI2SCFGR_PLLI2SQ) >> POSITION_VAL(RCC_PLLI2SCFGR_PLLI2SQ)); tmpreg1 = ((RCC->PLLI2SCFGR & RCC_PLLI2SCFGR_PLLI2SR) >> POSITION_VAL(RCC_PLLI2SCFGR_PLLI2SR)); /* Configure the PLLI2S division factors */ /* PLLI2S_VCO = f(VCO clock) = f(PLLI2S clock input) x (PLLI2SN/PLLM) */ /* SPDIFCLK = f(PLLI2S clock output) = f(VCO clock) / PLLI2SP */ __HAL_RCC_PLLI2S_CONFIG(PeriphClkInit->PLLI2S.PLLI2SN , PeriphClkInit->PLLI2S.PLLI2SP, tmpreg0, tmpreg1); } /*----------------- In Case of PLLI2S is just selected -----------------*/ if((PeriphClkInit->PeriphClockSelection & RCC_PERIPHCLK_PLLI2S) == RCC_PERIPHCLK_PLLI2S) { /* Check for Parameters */ assert_param(IS_RCC_PLLI2SP_VALUE(PeriphClkInit->PLLI2S.PLLI2SP)); assert_param(IS_RCC_PLLI2SR_VALUE(PeriphClkInit->PLLI2S.PLLI2SR)); assert_param(IS_RCC_PLLI2SQ_VALUE(PeriphClkInit->PLLI2S.PLLI2SQ)); /* Configure the PLLI2S division factors */ /* PLLI2S_VCO = f(VCO clock) = f(PLLI2S clock input) x (PLLI2SN/PLLI2SM) */ /* SPDIFRXCLK = f(PLLI2S clock output) = f(VCO clock) / PLLI2SP */ __HAL_RCC_PLLI2S_CONFIG(PeriphClkInit->PLLI2S.PLLI2SN , PeriphClkInit->PLLI2S.PLLI2SP, PeriphClkInit->PLLI2S.PLLI2SQ, PeriphClkInit->PLLI2S.PLLI2SR); } /* Enable the PLLI2S */ __HAL_RCC_PLLI2S_ENABLE(); /* Get Start Tick*/ tickstart = HAL_GetTick(); /* Wait till PLLI2S is ready */ while(__HAL_RCC_GET_FLAG(RCC_FLAG_PLLI2SRDY) == RESET) { if((HAL_GetTick() - tickstart) > PLLI2S_TIMEOUT_VALUE) { /* return in case of Timeout detected */ return HAL_TIMEOUT; } } } /*-------------------------------------- PLLSAI Configuration ---------------------------------*/ /* PLLSAI is configured when a peripheral will use it as source clock : SAI1, SAI2, LTDC or CK48 */ if(pllsaiused == 1) { /* Disable PLLSAI Clock */ __HAL_RCC_PLLSAI_DISABLE(); /* Get Start Tick*/ tickstart = HAL_GetTick(); /* Wait till PLLSAI is disabled */ while(__HAL_RCC_PLLSAI_GET_FLAG() != RESET) { if((HAL_GetTick() - tickstart) > PLLSAI_TIMEOUT_VALUE) { /* return in case of Timeout detected */ return HAL_TIMEOUT; } } /* Check the PLLSAI division factors */ assert_param(IS_RCC_PLLSAIN_VALUE(PeriphClkInit->PLLSAI.PLLSAIN)); /*----------------- In Case of PLLSAI is selected as source clock for SAI -------------------*/ if(((((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_SAI1) == RCC_PERIPHCLK_SAI1) && (PeriphClkInit->Sai1ClockSelection == RCC_SAI1CLKSOURCE_PLLSAI)) ||\ ((((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_SAI2) == RCC_PERIPHCLK_SAI2) && (PeriphClkInit->Sai2ClockSelection == RCC_SAI2CLKSOURCE_PLLSAI))) { /* check for PLLSAIQ Parameter */ assert_param(IS_RCC_PLLSAIQ_VALUE(PeriphClkInit->PLLSAI.PLLSAIQ)); /* check for PLLSAI/DIVQ Parameter */ assert_param(IS_RCC_PLLSAI_DIVQ_VALUE(PeriphClkInit->PLLSAIDivQ)); /* Read PLLSAIP value from PLLSAICFGR register (this value is not needed for SAI configuration) */ tmpreg0 = ((RCC->PLLSAICFGR & RCC_PLLSAICFGR_PLLSAIP) >> POSITION_VAL(RCC_PLLSAICFGR_PLLSAIP)); tmpreg1 = ((RCC->PLLSAICFGR & RCC_PLLI2SCFGR_PLLI2SR) >> POSITION_VAL(RCC_PLLSAICFGR_PLLSAIR)); /* PLLSAI_VCO Input = PLL_SOURCE/PLLM */ /* PLLSAI_VCO Output = PLLSAI_VCO Input * PLLSAIN */ /* SAI_CLK(first level) = PLLSAI_VCO Output/PLLSAIQ */ __HAL_RCC_PLLSAI_CONFIG(PeriphClkInit->PLLSAI.PLLSAIN , tmpreg0, PeriphClkInit->PLLSAI.PLLSAIQ, tmpreg1); /* SAI_CLK_x = SAI_CLK(first level)/PLLSAIDIVQ */ __HAL_RCC_PLLSAI_PLLSAICLKDIVQ_CONFIG(PeriphClkInit->PLLSAIDivQ); } /*----------------- In Case of PLLSAI is selected as source clock for CLK48 -------------------*/ /* In Case of PLLI2S is selected as source clock for CK48 */ if((((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_CLK48) == RCC_PERIPHCLK_CLK48) && (PeriphClkInit->Clk48ClockSelection == RCC_CLK48SOURCE_PLLSAIP)) { /* check for Parameters */ assert_param(IS_RCC_PLLSAIP_VALUE(PeriphClkInit->PLLSAI.PLLSAIP)); /* Read PLLSAIQ and PLLSAIR value from PLLSAICFGR register (this value is not needed for CK48 configuration) */ tmpreg0 = ((RCC->PLLSAICFGR & RCC_PLLSAICFGR_PLLSAIQ) >> POSITION_VAL(RCC_PLLSAICFGR_PLLSAIQ)); tmpreg1 = ((RCC->PLLSAICFGR & RCC_PLLSAICFGR_PLLSAIR) >> POSITION_VAL(RCC_PLLSAICFGR_PLLSAIR)); /* Configure the PLLSAI division factors */ /* PLLSAI_VCO = f(VCO clock) = f(PLLSAI clock input) x (PLLI2SN/PLLM) */ /* 48CLK = f(PLLSAI clock output) = f(VCO clock) / PLLSAIP */ __HAL_RCC_PLLSAI_CONFIG(PeriphClkInit->PLLSAI.PLLSAIN , PeriphClkInit->PLLSAI.PLLSAIP, tmpreg0, tmpreg1); } #if defined(STM32F746xx) || defined(STM32F756xx) || defined (STM32F767xx) || defined (STM32F769xx) || defined (STM32F777xx) || defined (STM32F779xx) /*---------------------------- LTDC configuration -------------------------------*/ if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_LTDC) == (RCC_PERIPHCLK_LTDC)) { assert_param(IS_RCC_PLLSAIR_VALUE(PeriphClkInit->PLLSAI.PLLSAIR)); assert_param(IS_RCC_PLLSAI_DIVR_VALUE(PeriphClkInit->PLLSAIDivR)); /* Read PLLSAIP and PLLSAIQ value from PLLSAICFGR register (these value are not needed for LTDC configuration) */ tmpreg0 = ((RCC->PLLSAICFGR & RCC_PLLSAICFGR_PLLSAIQ) >> POSITION_VAL(RCC_PLLSAICFGR_PLLSAIQ)); tmpreg1 = ((RCC->PLLSAICFGR & RCC_PLLSAICFGR_PLLSAIP) >> POSITION_VAL(RCC_PLLSAICFGR_PLLSAIP)); /* PLLSAI_VCO Input = PLL_SOURCE/PLLM */ /* PLLSAI_VCO Output = PLLSAI_VCO Input * PLLSAIN */ /* LTDC_CLK(first level) = PLLSAI_VCO Output/PLLSAIR */ __HAL_RCC_PLLSAI_CONFIG(PeriphClkInit->PLLSAI.PLLSAIN , tmpreg1, tmpreg0, PeriphClkInit->PLLSAI.PLLSAIR); /* LTDC_CLK = LTDC_CLK(first level)/PLLSAIDIVR */ __HAL_RCC_PLLSAI_PLLSAICLKDIVR_CONFIG(PeriphClkInit->PLLSAIDivR); } #endif /* STM32F746xx || STM32F756xx || STM32F767xx || STM32F769xx || STM32F777xx || STM32F779xx */ /* Enable PLLSAI Clock */ __HAL_RCC_PLLSAI_ENABLE(); /* Get Start Tick*/ tickstart = HAL_GetTick(); /* Wait till PLLSAI is ready */ while(__HAL_RCC_PLLSAI_GET_FLAG() == RESET) { if((HAL_GetTick() - tickstart) > PLLSAI_TIMEOUT_VALUE) { /* return in case of Timeout detected */ return HAL_TIMEOUT; } } } return HAL_OK; } /** * @brief Get the RCC_PeriphCLKInitTypeDef according to the internal * RCC configuration registers. * @param PeriphClkInit: pointer to the configured RCC_PeriphCLKInitTypeDef structure * @retval None */ void HAL_RCCEx_GetPeriphCLKConfig(RCC_PeriphCLKInitTypeDef *PeriphClkInit) { uint32_t tempreg = 0; /* Set all possible values for the extended clock type parameter------------*/ #if defined (STM32F765xx) || defined (STM32F767xx) || defined (STM32F769xx) || defined (STM32F777xx) || defined (STM32F779xx) PeriphClkInit->PeriphClockSelection = RCC_PERIPHCLK_I2S | RCC_PERIPHCLK_LPTIM1 |\ RCC_PERIPHCLK_SAI1 | RCC_PERIPHCLK_SAI2 |\ RCC_PERIPHCLK_TIM | RCC_PERIPHCLK_RTC |\ RCC_PERIPHCLK_CEC | RCC_PERIPHCLK_I2C4 |\ RCC_PERIPHCLK_I2C1 | RCC_PERIPHCLK_I2C2 |\ RCC_PERIPHCLK_I2C3 | RCC_PERIPHCLK_USART1 |\ RCC_PERIPHCLK_USART2 | RCC_PERIPHCLK_USART3 |\ RCC_PERIPHCLK_UART4 | RCC_PERIPHCLK_UART5 |\ RCC_PERIPHCLK_USART6 | RCC_PERIPHCLK_UART7 |\ RCC_PERIPHCLK_UART8 | RCC_PERIPHCLK_SDMMC1 |\ RCC_PERIPHCLK_CLK48 | RCC_PERIPHCLK_SDMMC2 |\ RCC_PERIPHCLK_DFSDM1 | RCC_PERIPHCLK_DFSDM1_AUDIO; #else PeriphClkInit->PeriphClockSelection = RCC_PERIPHCLK_I2S | RCC_PERIPHCLK_LPTIM1 |\ RCC_PERIPHCLK_SAI1 | RCC_PERIPHCLK_SAI2 |\ RCC_PERIPHCLK_TIM | RCC_PERIPHCLK_RTC |\ RCC_PERIPHCLK_CEC | RCC_PERIPHCLK_I2C4 |\ RCC_PERIPHCLK_I2C1 | RCC_PERIPHCLK_I2C2 |\ RCC_PERIPHCLK_I2C3 | RCC_PERIPHCLK_USART1 |\ RCC_PERIPHCLK_USART2 | RCC_PERIPHCLK_USART3 |\ RCC_PERIPHCLK_UART4 | RCC_PERIPHCLK_UART5 |\ RCC_PERIPHCLK_USART6 | RCC_PERIPHCLK_UART7 |\ RCC_PERIPHCLK_UART8 | RCC_PERIPHCLK_SDMMC1 |\ RCC_PERIPHCLK_CLK48; #endif /* STM32F767xx || STM32F769xx || STM32F777xx || STM32F779xx */ /* Get the PLLI2S Clock configuration -----------------------------------------------*/ PeriphClkInit->PLLI2S.PLLI2SN = (uint32_t)((RCC->PLLI2SCFGR & RCC_PLLI2SCFGR_PLLI2SN) >> POSITION_VAL(RCC_PLLI2SCFGR_PLLI2SN)); PeriphClkInit->PLLI2S.PLLI2SP = (uint32_t)((RCC->PLLI2SCFGR & RCC_PLLI2SCFGR_PLLI2SP) >> POSITION_VAL(RCC_PLLI2SCFGR_PLLI2SP)); PeriphClkInit->PLLI2S.PLLI2SQ = (uint32_t)((RCC->PLLI2SCFGR & RCC_PLLI2SCFGR_PLLI2SQ) >> POSITION_VAL(RCC_PLLI2SCFGR_PLLI2SQ)); PeriphClkInit->PLLI2S.PLLI2SR = (uint32_t)((RCC->PLLI2SCFGR & RCC_PLLI2SCFGR_PLLI2SR) >> POSITION_VAL(RCC_PLLI2SCFGR_PLLI2SR)); /* Get the PLLSAI Clock configuration -----------------------------------------------*/ PeriphClkInit->PLLSAI.PLLSAIN = (uint32_t)((RCC->PLLSAICFGR & RCC_PLLSAICFGR_PLLSAIN) >> POSITION_VAL(RCC_PLLSAICFGR_PLLSAIN)); PeriphClkInit->PLLSAI.PLLSAIP = (uint32_t)((RCC->PLLSAICFGR & RCC_PLLSAICFGR_PLLSAIP) >> POSITION_VAL(RCC_PLLSAICFGR_PLLSAIP)); PeriphClkInit->PLLSAI.PLLSAIQ = (uint32_t)((RCC->PLLSAICFGR & RCC_PLLSAICFGR_PLLSAIQ) >> POSITION_VAL(RCC_PLLSAICFGR_PLLSAIQ)); PeriphClkInit->PLLSAI.PLLSAIR = (uint32_t)((RCC->PLLSAICFGR & RCC_PLLSAICFGR_PLLSAIR) >> POSITION_VAL(RCC_PLLSAICFGR_PLLSAIR)); /* Get the PLLSAI/PLLI2S division factors -------------------------------------------*/ PeriphClkInit->PLLI2SDivQ = (uint32_t)((RCC->DCKCFGR1 & RCC_DCKCFGR1_PLLI2SDIVQ) >> POSITION_VAL(RCC_DCKCFGR1_PLLI2SDIVQ)); PeriphClkInit->PLLSAIDivQ = (uint32_t)((RCC->DCKCFGR1 & RCC_DCKCFGR1_PLLSAIDIVQ) >> POSITION_VAL(RCC_DCKCFGR1_PLLSAIDIVQ)); PeriphClkInit->PLLSAIDivR = (uint32_t)((RCC->DCKCFGR1 & RCC_DCKCFGR1_PLLSAIDIVR) >> POSITION_VAL(RCC_DCKCFGR1_PLLSAIDIVR)); /* Get the SAI1 clock configuration ----------------------------------------------*/ PeriphClkInit->Sai1ClockSelection = __HAL_RCC_GET_SAI1_SOURCE(); /* Get the SAI2 clock configuration ----------------------------------------------*/ PeriphClkInit->Sai2ClockSelection = __HAL_RCC_GET_SAI2_SOURCE(); /* Get the I2S clock configuration ------------------------------------------*/ PeriphClkInit->I2sClockSelection = __HAL_RCC_GET_I2SCLKSOURCE(); /* Get the I2C1 clock configuration ------------------------------------------*/ PeriphClkInit->I2c1ClockSelection = __HAL_RCC_GET_I2C1_SOURCE(); /* Get the I2C2 clock configuration ------------------------------------------*/ PeriphClkInit->I2c2ClockSelection = __HAL_RCC_GET_I2C2_SOURCE(); /* Get the I2C3 clock configuration ------------------------------------------*/ PeriphClkInit->I2c3ClockSelection = __HAL_RCC_GET_I2C3_SOURCE(); /* Get the I2C4 clock configuration ------------------------------------------*/ PeriphClkInit->I2c4ClockSelection = __HAL_RCC_GET_I2C4_SOURCE(); /* Get the USART1 clock configuration ------------------------------------------*/ PeriphClkInit->Usart1ClockSelection = __HAL_RCC_GET_USART1_SOURCE(); /* Get the USART2 clock configuration ------------------------------------------*/ PeriphClkInit->Usart2ClockSelection = __HAL_RCC_GET_USART2_SOURCE(); /* Get the USART3 clock configuration ------------------------------------------*/ PeriphClkInit->Usart3ClockSelection = __HAL_RCC_GET_USART3_SOURCE(); /* Get the UART4 clock configuration ------------------------------------------*/ PeriphClkInit->Uart4ClockSelection = __HAL_RCC_GET_UART4_SOURCE(); /* Get the UART5 clock configuration ------------------------------------------*/ PeriphClkInit->Uart5ClockSelection = __HAL_RCC_GET_UART5_SOURCE(); /* Get the USART6 clock configuration ------------------------------------------*/ PeriphClkInit->Usart6ClockSelection = __HAL_RCC_GET_USART6_SOURCE(); /* Get the UART7 clock configuration ------------------------------------------*/ PeriphClkInit->Uart7ClockSelection = __HAL_RCC_GET_UART7_SOURCE(); /* Get the UART8 clock configuration ------------------------------------------*/ PeriphClkInit->Uart8ClockSelection = __HAL_RCC_GET_UART8_SOURCE(); /* Get the LPTIM1 clock configuration ------------------------------------------*/ PeriphClkInit->Lptim1ClockSelection = __HAL_RCC_GET_LPTIM1_SOURCE(); /* Get the CEC clock configuration -----------------------------------------------*/ PeriphClkInit->CecClockSelection = __HAL_RCC_GET_CEC_SOURCE(); /* Get the CK48 clock configuration -----------------------------------------------*/ PeriphClkInit->Clk48ClockSelection = __HAL_RCC_GET_CLK48_SOURCE(); /* Get the SDMMC1 clock configuration -----------------------------------------------*/ PeriphClkInit->Sdmmc1ClockSelection = __HAL_RCC_GET_SDMMC1_SOURCE(); #if defined (STM32F765xx) || defined (STM32F767xx) || defined (STM32F769xx) || defined (STM32F777xx) || defined (STM32F779xx) /* Get the SDMMC2 clock configuration -----------------------------------------------*/ PeriphClkInit->Sdmmc2ClockSelection = __HAL_RCC_GET_SDMMC2_SOURCE(); /* Get the DFSDM clock configuration -----------------------------------------------*/ PeriphClkInit->Dfsdm1ClockSelection = __HAL_RCC_GET_DFSDM1_SOURCE(); /* Get the DFSDM AUDIO clock configuration -----------------------------------------------*/ PeriphClkInit->Dfsdm1AudioClockSelection = __HAL_RCC_GET_DFSDM1AUDIO_SOURCE(); #endif /* STM32F767xx || STM32F769xx || STM32F777xx || STM32F779xx */ /* Get the RTC Clock configuration -----------------------------------------------*/ tempreg = (RCC->CFGR & RCC_CFGR_RTCPRE); PeriphClkInit->RTCClockSelection = (uint32_t)((tempreg) | (RCC->BDCR & RCC_BDCR_RTCSEL)); /* Get the TIM Prescaler configuration --------------------------------------------*/ if ((RCC->DCKCFGR1 & RCC_DCKCFGR1_TIMPRE) == RESET) { PeriphClkInit->TIMPresSelection = RCC_TIMPRES_DESACTIVATED; } else { PeriphClkInit->TIMPresSelection = RCC_TIMPRES_ACTIVATED; } } #endif /* STM32F745xx || STM32F746xx || STM32F756xx || STM32F765xx || STM32F767xx || STM32F769xx || STM32F777xx || STM32F779xx */ /** * @brief Return the peripheral clock frequency for a given peripheral(SAI..) * @note Return 0 if peripheral clock identifier not managed by this API * @param PeriphClk: Peripheral clock identifier * This parameter can be one of the following values: * @arg RCC_PERIPHCLK_SAI1: SAI1 peripheral clock * @arg RCC_PERIPHCLK_SAI2: SAI2 peripheral clock * @retval Frequency in KHz */ uint32_t HAL_RCCEx_GetPeriphCLKFreq(uint32_t PeriphClk) { uint32_t tmpreg = 0; /* This variable is used to store the SAI clock frequency (value in Hz) */ uint32_t frequency = 0; /* This variable is used to store the VCO Input (value in Hz) */ uint32_t vcoinput = 0; /* This variable is used to store the SAI clock source */ uint32_t saiclocksource = 0; if (PeriphClk == RCC_PERIPHCLK_SAI1) { saiclocksource = RCC->DCKCFGR1; saiclocksource &= RCC_DCKCFGR1_SAI1SEL; switch (saiclocksource) { case 0: /* PLLSAI is the clock source for SAI1 */ { /* Configure the PLLSAI division factor */ /* PLLSAI_VCO Input = PLL_SOURCE/PLLM */ if((RCC->PLLCFGR & RCC_PLLCFGR_PLLSRC) == RCC_PLLSOURCE_HSI) { /* In Case the PLL Source is HSI (Internal Clock) */ vcoinput = (HSI_VALUE / (uint32_t)(RCC->PLLCFGR & RCC_PLLCFGR_PLLM)); } else { /* In Case the PLL Source is HSE (External Clock) */ vcoinput = ((HSE_VALUE / (uint32_t)(RCC->PLLCFGR & RCC_PLLCFGR_PLLM))); } /* PLLSAI_VCO Output = PLLSAI_VCO Input * PLLSAIN */ /* SAI_CLK(first level) = PLLSAI_VCO Output/PLLSAIQ */ tmpreg = (RCC->PLLSAICFGR & RCC_PLLSAICFGR_PLLSAIQ) >> 24; frequency = (vcoinput * ((RCC->PLLSAICFGR & RCC_PLLSAICFGR_PLLSAIN) >> 6))/(tmpreg); /* SAI_CLK_x = SAI_CLK(first level)/PLLSAIDIVQ */ tmpreg = (((RCC->DCKCFGR1 & RCC_DCKCFGR1_PLLSAIDIVQ) >> 8) + 1); frequency = frequency/(tmpreg); break; } case RCC_DCKCFGR1_SAI1SEL_0: /* PLLI2S is the clock source for SAI1 */ { /* Configure the PLLI2S division factor */ /* PLLI2S_VCO Input = PLL_SOURCE/PLLM */ if((RCC->PLLCFGR & RCC_PLLCFGR_PLLSRC) == RCC_PLLSOURCE_HSI) { /* In Case the PLL Source is HSI (Internal Clock) */ vcoinput = (HSI_VALUE / (uint32_t)(RCC->PLLCFGR & RCC_PLLCFGR_PLLM)); } else { /* In Case the PLL Source is HSE (External Clock) */ vcoinput = ((HSE_VALUE / (uint32_t)(RCC->PLLCFGR & RCC_PLLCFGR_PLLM))); } /* PLLI2S_VCO Output = PLLI2S_VCO Input * PLLI2SN */ /* SAI_CLK(first level) = PLLI2S_VCO Output/PLLI2SQ */ tmpreg = (RCC->PLLI2SCFGR & RCC_PLLI2SCFGR_PLLI2SQ) >> 24; frequency = (vcoinput * ((RCC->PLLI2SCFGR & RCC_PLLI2SCFGR_PLLI2SN) >> 6))/(tmpreg); /* SAI_CLK_x = SAI_CLK(first level)/PLLI2SDIVQ */ tmpreg = ((RCC->DCKCFGR1 & RCC_DCKCFGR1_PLLI2SDIVQ) + 1); frequency = frequency/(tmpreg); break; } case RCC_DCKCFGR1_SAI1SEL_1: /* External clock is the clock source for SAI1 */ { frequency = EXTERNAL_CLOCK_VALUE; break; } #if defined (STM32F765xx) || defined (STM32F767xx) || defined (STM32F769xx) || defined (STM32F777xx) || defined (STM32F779xx) case RCC_DCKCFGR1_SAI1SEL: /* HSI or HSE is the clock source for SAI*/ { if((RCC->PLLCFGR & RCC_PLLCFGR_PLLSRC) == RCC_PLLSOURCE_HSI) { /* In Case the main PLL Source is HSI */ frequency = HSI_VALUE; } else { /* In Case the main PLL Source is HSE */ frequency = HSE_VALUE; } break; } #endif /* STM32F767xx || STM32F769xx || STM32F777xx || STM32F779xx */ default : { break; } } } if (PeriphClk == RCC_PERIPHCLK_SAI2) { saiclocksource = RCC->DCKCFGR1; saiclocksource &= RCC_DCKCFGR1_SAI2SEL; switch (saiclocksource) { case 0: /* PLLSAI is the clock source for SAI*/ { /* Configure the PLLSAI division factor */ /* PLLSAI_VCO Input = PLL_SOURCE/PLLM */ if((RCC->PLLCFGR & RCC_PLLCFGR_PLLSRC) == RCC_PLLSOURCE_HSI) { /* In Case the PLL Source is HSI (Internal Clock) */ vcoinput = (HSI_VALUE / (uint32_t)(RCC->PLLCFGR & RCC_PLLCFGR_PLLM)); } else { /* In Case the PLL Source is HSE (External Clock) */ vcoinput = ((HSE_VALUE / (uint32_t)(RCC->PLLCFGR & RCC_PLLCFGR_PLLM))); } /* PLLSAI_VCO Output = PLLSAI_VCO Input * PLLSAIN */ /* SAI_CLK(first level) = PLLSAI_VCO Output/PLLSAIQ */ tmpreg = (RCC->PLLSAICFGR & RCC_PLLSAICFGR_PLLSAIQ) >> 24; frequency = (vcoinput * ((RCC->PLLSAICFGR & RCC_PLLSAICFGR_PLLSAIN) >> 6))/(tmpreg); /* SAI_CLK_x = SAI_CLK(first level)/PLLSAIDIVQ */ tmpreg = (((RCC->DCKCFGR1 & RCC_DCKCFGR1_PLLSAIDIVQ) >> 8) + 1); frequency = frequency/(tmpreg); break; } case RCC_DCKCFGR1_SAI2SEL_0: /* PLLI2S is the clock source for SAI2 */ { /* Configure the PLLI2S division factor */ /* PLLI2S_VCO Input = PLL_SOURCE/PLLM */ if((RCC->PLLCFGR & RCC_PLLCFGR_PLLSRC) == RCC_PLLSOURCE_HSI) { /* In Case the PLL Source is HSI (Internal Clock) */ vcoinput = (HSI_VALUE / (uint32_t)(RCC->PLLCFGR & RCC_PLLCFGR_PLLM)); } else { /* In Case the PLL Source is HSE (External Clock) */ vcoinput = ((HSE_VALUE / (uint32_t)(RCC->PLLCFGR & RCC_PLLCFGR_PLLM))); } /* PLLI2S_VCO Output = PLLI2S_VCO Input * PLLI2SN */ /* SAI_CLK(first level) = PLLI2S_VCO Output/PLLI2SQ */ tmpreg = (RCC->PLLI2SCFGR & RCC_PLLI2SCFGR_PLLI2SQ) >> 24; frequency = (vcoinput * ((RCC->PLLI2SCFGR & RCC_PLLI2SCFGR_PLLI2SN) >> 6))/(tmpreg); /* SAI_CLK_x = SAI_CLK(first level)/PLLI2SDIVQ */ tmpreg = ((RCC->DCKCFGR1 & RCC_DCKCFGR1_PLLI2SDIVQ) + 1); frequency = frequency/(tmpreg); break; } case RCC_DCKCFGR1_SAI2SEL_1: /* External clock is the clock source for SAI2 */ { frequency = EXTERNAL_CLOCK_VALUE; break; } #if defined (STM32F765xx) || defined (STM32F767xx) || defined (STM32F769xx) || defined (STM32F777xx) || defined (STM32F779xx) case RCC_DCKCFGR1_SAI2SEL: /* HSI or HSE is the clock source for SAI2 */ { if((RCC->PLLCFGR & RCC_PLLCFGR_PLLSRC) == RCC_PLLSOURCE_HSI) { /* In Case the main PLL Source is HSI */ frequency = HSI_VALUE; } else { /* In Case the main PLL Source is HSE */ frequency = HSE_VALUE; } break; } #endif /* STM32F767xx || STM32F769xx || STM32F777xx || STM32F779xx */ default : { break; } } } return frequency; } /** * @} */ /** * @} */ #endif /* HAL_RCC_MODULE_ENABLED */ /** * @} */ /** * @} */ /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/