/** ****************************************************************************** * @file stm32f4xx_hal_rcc_ex.c * @author MCD Application Team * @version V1.3.2 * @date 26-June-2015 * @brief Extension RCC HAL module driver. * This file provides firmware functions to manage the following * functionalities RCC extension peripheral: * + Extended Peripheral Control functions * ****************************************************************************** * @attention * *

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* * 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 "stm32f4xx_hal.h" /** @addtogroup STM32F4xx_HAL_Driver * @{ */ /** @defgroup RCCEx RCCEx * @brief RCCEx HAL module driver * @{ */ #ifdef HAL_RCC_MODULE_ENABLED /* Private typedef -----------------------------------------------------------*/ /* Private define ------------------------------------------------------------*/ /** @addtogroup RCCEx_Private_Constants * @{ */ /** * @} */ /* Private macro -------------------------------------------------------------*/ /* 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 are set to their reset values. @endverbatim * @{ */ #if defined(STM32F446xx) /** * @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 and TIM). * * @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 are set to their reset values. * * @retval HAL status */ HAL_StatusTypeDef HAL_RCCEx_PeriphCLKConfig(RCC_PeriphCLKInitTypeDef *PeriphClkInit) { uint32_t tickstart = 0; uint32_t tmpreg1 = 0; uint32_t plli2sp = 0; uint32_t plli2sq = 0; uint32_t plli2sr = 0; uint32_t pllsaip = 0; uint32_t pllsaiq = 0; uint32_t plli2sused = 0; uint32_t pllsaiused = 0; /* Check the peripheral clock selection parameters */ assert_param(IS_RCC_PERIPHCLOCK(PeriphClkInit->PeriphClockSelection)); /*----------------------------------- I2S APB1 configuration ----------------------------------*/ if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_I2S_APB1) == (RCC_PERIPHCLK_I2S_APB1)) { /* Check the parameters */ assert_param(IS_RCC_I2SAPB1CLKSOURCE(PeriphClkInit->I2sApb1ClockSelection)); /* Configure I2S Clock source */ __HAL_RCC_I2S_APB1_CONFIG(PeriphClkInit->I2sApb1ClockSelection); /* Enable the PLLI2S when it's used as clock source for I2S */ if(PeriphClkInit->I2sApb1ClockSelection == RCC_I2SAPB1CLKSOURCE_PLLI2S) { plli2sused = 1; } } /*----------------------------------- I2S APB2 configuration -----------------------------------*/ if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_I2S_APB2) == (RCC_PERIPHCLK_I2S_APB2)) { /* Check the parameters */ assert_param(IS_RCC_I2SAPB2CLKSOURCE(PeriphClkInit->I2sApb2ClockSelection)); /* Configure I2S Clock source */ __HAL_RCC_I2S_APB2_CONFIG(PeriphClkInit->I2sApb2ClockSelection); /* Enable the PLLI2S when it's used as clock source for I2S */ if(PeriphClkInit->I2sApb2ClockSelection == RCC_I2SAPB2CLKSOURCE_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; } } /*------------------------------------ RTC configuration --------------------------------------*/ if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_RTC) == (RCC_PERIPHCLK_RTC)) { /* Enable Power Clock*/ __HAL_RCC_PWR_CLK_ENABLE(); /* Enable write access to Backup domain */ PWR->CR |= PWR_CR_DBP; /* Get tick */ tickstart = HAL_GetTick(); while((PWR->CR & PWR_CR_DBP) == RESET) { if((HAL_GetTick() - tickstart ) > RCC_DBP_TIMEOUT_VALUE) { return HAL_TIMEOUT; } } /* Reset the Backup domain only if the RTC Clock source selction is modified */ if((RCC->BDCR & RCC_BDCR_RTCSEL) != (PeriphClkInit->RTCClockSelection & RCC_BDCR_RTCSEL)) { /* Store the content of BDCR register before the reset of Backup Domain */ tmpreg1 = (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 = tmpreg1; /* Wait for LSERDY if LSE was enabled */ if(HAL_IS_BIT_SET(tmpreg1, RCC_BDCR_LSERDY)) { /* Get 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)) { /* Configure Timer Prescaler */ __HAL_RCC_TIMCLKPRESCALER(PeriphClkInit->TIMPresSelection); } /*------------------------------------- FMPI2C1 Configuration ----------------------------------*/ if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_FMPI2C1) == RCC_PERIPHCLK_FMPI2C1) { /* Check the parameters */ assert_param(IS_RCC_FMPI2C1CLKSOURCE(PeriphClkInit->Fmpi2c1ClockSelection)); /* Configure the FMPI2C1 clock source */ __HAL_RCC_FMPI2C1_CONFIG(PeriphClkInit->Fmpi2c1ClockSelection); } /*--------------------------------------- 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_CK48) == RCC_PERIPHCLK_CK48) { /* Check the parameters */ assert_param(IS_RCC_CK48CLKSOURCE(PeriphClkInit->Clk48ClockSelection)); /* Configure the SDIO clock source */ __HAL_RCC_CLK48_CONFIG(PeriphClkInit->Clk48ClockSelection); /* Enable the PLLSAI when it's used as clock source for CK48 */ if(PeriphClkInit->Clk48ClockSelection == RCC_CK48CLKSOURCE_PLLSAIP) { pllsaiused = 1; } } /*------------------------------------- SDIO Configuration ------------------------------------*/ if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_SDIO) == RCC_PERIPHCLK_SDIO) { /* Check the parameters */ assert_param(IS_RCC_SDIOCLKSOURCE(PeriphClkInit->SdioClockSelection)); /* Configure the SDIO clock source */ __HAL_RCC_SDIO_CONFIG(PeriphClkInit->SdioClockSelection); } /*------------------------------------- SPDIFRX Configuration --------------*/ if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_SPDIFRX) == RCC_PERIPHCLK_SPDIFRX) { /* Check the parameters */ assert_param(IS_RCC_SPDIFRXCLKSOURCE(PeriphClkInit->SpdifClockSelection)); /* Configure the SPDIFRX clock source */ __HAL_RCC_SPDIFRX_CONFIG(PeriphClkInit->SpdifClockSelection); /* Enable the PLLI2S when it's used as clock source for SPDIFRX */ if(PeriphClkInit->SpdifClockSelection == RCC_SPDIFRXCLKSOURCE_PLLI2SP) { plli2sused = 1; } } /*-------------------------------------- PLLI2S Configuration --------------*/ /* PLLI2S is configured when a peripheral will use it as source clock : SAI1, SAI2, I2S on APB1, I2S on APB2 or SPDIFRX */ if((plli2sused == 1) || (PeriphClkInit->PeriphClockSelection == RCC_PERIPHCLK_PLLI2S)) { /* Disable the PLLI2S */ __HAL_RCC_PLLI2S_DISABLE(); /* Get 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_PLLI2SM_VALUE(PeriphClkInit->PLLI2S.PLLI2SM)); 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_APB1) == RCC_PERIPHCLK_I2S_APB1) && (PeriphClkInit->I2sApb1ClockSelection == RCC_I2SAPB1CLKSOURCE_PLLI2S)) || ((((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_I2S_APB2) == RCC_PERIPHCLK_I2S_APB2) && (PeriphClkInit->I2sApb2ClockSelection == RCC_I2SAPB2CLKSOURCE_PLLI2S))) { /* check for Parameters */ assert_param(IS_RCC_PLLI2SR_VALUE(PeriphClkInit->PLLI2S.PLLI2SR)); /* Read PLLI2SP/PLLI2SQ value from PLLI2SCFGR register (this value is not needed for I2S configuration) */ plli2sp = ((((RCC->PLLI2SCFGR & RCC_PLLI2SCFGR_PLLI2SP) >> POSITION_VAL(RCC_PLLI2SCFGR_PLLI2SP)) + 1) << 1); plli2sq = ((RCC->PLLI2SCFGR & RCC_PLLI2SCFGR_PLLI2SQ) >> POSITION_VAL(RCC_PLLI2SCFGR_PLLI2SQ)); /* Configure the PLLI2S division factors */ /* PLLI2S_VCO = f(VCO clock) = f(PLLI2S clock input) × (PLLI2SN/PLLI2SM) */ /* I2SCLK = f(PLLI2S clock output) = f(VCO clock) / PLLI2SR */ __HAL_RCC_PLLI2S_CONFIG(PeriphClkInit->PLLI2S.PLLI2SM, PeriphClkInit->PLLI2S.PLLI2SN , plli2sp, plli2sq, 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/PLLI2SR value from PLLI2SCFGR register (this value is not needed for SAI configuration) */ plli2sp = ((((RCC->PLLI2SCFGR & RCC_PLLI2SCFGR_PLLI2SP) >> POSITION_VAL(RCC_PLLI2SCFGR_PLLI2SP)) + 1) << 1); plli2sr = ((RCC->PLLI2SCFGR & RCC_PLLI2SCFGR_PLLI2SR) >> POSITION_VAL(RCC_PLLI2SCFGR_PLLI2SR)); /* Configure the PLLI2S division factors */ /* PLLI2S_VCO Input = PLL_SOURCE/PLLI2SM */ /* PLLI2S_VCO Output = PLLI2S_VCO Input * PLLI2SN */ /* SAI_CLK(first level) = PLLI2S_VCO Output/PLLI2SQ */ __HAL_RCC_PLLI2S_CONFIG(PeriphClkInit->PLLI2S.PLLI2SM, PeriphClkInit->PLLI2S.PLLI2SN , plli2sp, PeriphClkInit->PLLI2S.PLLI2SQ, plli2sr); /* 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 SPDIFRX -------------------*/ if((((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_SPDIFRX) == RCC_PERIPHCLK_SPDIFRX) && (PeriphClkInit->SpdifClockSelection == RCC_SPDIFRXCLKSOURCE_PLLI2SP)) { /* check for Parameters */ assert_param(IS_RCC_PLLI2SP_VALUE(PeriphClkInit->PLLI2S.PLLI2SP)); /* Read PLLI2SR value from PLLI2SCFGR register (this value is not need for SAI configuration) */ plli2sq = ((((RCC->PLLI2SCFGR & RCC_PLLI2SCFGR_PLLI2SP) >> POSITION_VAL(RCC_PLLI2SCFGR_PLLI2SP)) + 1) << 1); plli2sr = ((RCC->PLLI2SCFGR & RCC_PLLI2SCFGR_PLLI2SR) >> POSITION_VAL(RCC_PLLI2SCFGR_PLLI2SR)); /* Configure the PLLI2S division factors */ /* PLLI2S_VCO = f(VCO clock) = f(PLLI2S clock input) × (PLLI2SN/PLLI2SM) */ /* SPDIFRXCLK = f(PLLI2S clock output) = f(VCO clock) / PLLI2SP */ __HAL_RCC_PLLI2S_CONFIG(PeriphClkInit->PLLI2S.PLLI2SM, PeriphClkInit->PLLI2S.PLLI2SN , PeriphClkInit->PLLI2S.PLLI2SP, plli2sq, plli2sr); } /*----------------- 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) × (PLLI2SN/PLLI2SM) */ __HAL_RCC_PLLI2S_CONFIG(PeriphClkInit->PLLI2S.PLLI2SM, PeriphClkInit->PLLI2S.PLLI2SN , PeriphClkInit->PLLI2S.PLLI2SP, PeriphClkInit->PLLI2S.PLLI2SQ, PeriphClkInit->PLLI2S.PLLI2SR); } /* Enable the PLLI2S */ __HAL_RCC_PLLI2S_ENABLE(); /* Get 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, CK48 or SDIO */ if(pllsaiused == 1) { /* Disable PLLSAI Clock */ __HAL_RCC_PLLSAI_DISABLE(); /* Get 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_PLLSAIM_VALUE(PeriphClkInit->PLLSAI.PLLSAIM)); 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) */ pllsaip = ((((RCC->PLLSAICFGR & RCC_PLLSAICFGR_PLLSAIP) >> POSITION_VAL(RCC_PLLSAICFGR_PLLSAIP)) + 1) << 1); /* 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.PLLSAIM, PeriphClkInit->PLLSAI.PLLSAIN , pllsaip, PeriphClkInit->PLLSAI.PLLSAIQ, 0); /* 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 CK48 -------------------*/ /* In Case of PLLI2S is selected as source clock for CK48 */ if((((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_CK48) == RCC_PERIPHCLK_CK48) && (PeriphClkInit->Clk48ClockSelection == RCC_CK48CLKSOURCE_PLLSAIP)) { /* check for Parameters */ assert_param(IS_RCC_PLLSAIP_VALUE(PeriphClkInit->PLLSAI.PLLSAIP)); /* Read PLLSAIQ value from PLLI2SCFGR register (this value is not need for SAI configuration) */ pllsaiq = ((RCC->PLLSAICFGR & RCC_PLLSAICFGR_PLLSAIQ) >> POSITION_VAL(RCC_PLLSAICFGR_PLLSAIQ)); /* Configure the PLLSAI division factors */ /* PLLSAI_VCO = f(VCO clock) = f(PLLSAI clock input) × (PLLI2SN/PLLSAIM) */ /* 48CLK = f(PLLSAI clock output) = f(VCO clock) / PLLSAIP */ __HAL_RCC_PLLSAI_CONFIG(PeriphClkInit->PLLSAI.PLLSAIM, PeriphClkInit->PLLSAI.PLLSAIN , PeriphClkInit->PLLSAI.PLLSAIP, pllsaiq, 0); } /* Enable PLLSAI Clock */ __HAL_RCC_PLLSAI_ENABLE(); /* Get 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 an RCC_PeriphCLKInitTypeDef structure that * will be configured. * @retval None */ void HAL_RCCEx_GetPeriphCLKConfig(RCC_PeriphCLKInitTypeDef *PeriphClkInit) { uint32_t tempreg; /* Set all possible values for the extended clock type parameter------------*/ PeriphClkInit->PeriphClockSelection = RCC_PERIPHCLK_I2S_APB1 | RCC_PERIPHCLK_I2S_APB2 |\ RCC_PERIPHCLK_SAI1 | RCC_PERIPHCLK_SAI2 |\ RCC_PERIPHCLK_TIM | RCC_PERIPHCLK_RTC |\ RCC_PERIPHCLK_CEC | RCC_PERIPHCLK_FMPI2C1 |\ RCC_PERIPHCLK_CK48 | RCC_PERIPHCLK_SDIO |\ RCC_PERIPHCLK_SPDIFRX; /* Get the PLLI2S Clock configuration -----------------------------------------------*/ PeriphClkInit->PLLI2S.PLLI2SM = (uint32_t)((RCC->PLLI2SCFGR & RCC_PLLI2SCFGR_PLLI2SM) >> POSITION_VAL(RCC_PLLI2SCFGR_PLLI2SM)); 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)) + 1) << 1); 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.PLLSAIM = (uint32_t)((RCC->PLLSAICFGR & RCC_PLLSAICFGR_PLLSAIM) >> POSITION_VAL(RCC_PLLSAICFGR_PLLSAIM)); 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)) + 1) << 1); PeriphClkInit->PLLSAI.PLLSAIQ = (uint32_t)((RCC->PLLSAICFGR & RCC_PLLSAICFGR_PLLSAIQ) >> POSITION_VAL(RCC_PLLSAICFGR_PLLSAIQ)); /* Get the PLLSAI/PLLI2S division factors -------------------------------------------*/ PeriphClkInit->PLLI2SDivQ = (uint32_t)((RCC->DCKCFGR & RCC_DCKCFGR_PLLI2SDIVQ) >> POSITION_VAL(RCC_DCKCFGR_PLLI2SDIVQ)); PeriphClkInit->PLLSAIDivQ = (uint32_t)((RCC->DCKCFGR & RCC_DCKCFGR_PLLSAIDIVQ) >> POSITION_VAL(RCC_DCKCFGR_PLLSAIDIVQ)); /* 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 APB1 clock configuration ------------------------------------------*/ PeriphClkInit->I2sApb1ClockSelection = __HAL_RCC_GET_I2S_APB1_SOURCE(); /* Get the I2S APB2 clock configuration ------------------------------------------*/ PeriphClkInit->I2sApb2ClockSelection = __HAL_RCC_GET_I2S_APB2_SOURCE(); /* Get the RTC Clock configuration -----------------------------------------------*/ tempreg = (RCC->CFGR & RCC_CFGR_RTCPRE); PeriphClkInit->RTCClockSelection = (uint32_t)((tempreg) | (RCC->BDCR & RCC_BDCR_RTCSEL)); /* Get the CEC clock configuration -----------------------------------------------*/ PeriphClkInit->CecClockSelection = __HAL_RCC_GET_CEC_SOURCE(); /* Get the FMPI2C1 clock configuration -----------------------------------------------*/ PeriphClkInit->Fmpi2c1ClockSelection = __HAL_RCC_GET_FMPI2C1_SOURCE(); /* Get the CK48 clock configuration -----------------------------------------------*/ PeriphClkInit->Clk48ClockSelection = __HAL_RCC_GET_CLK48_SOURCE(); /* Get the SDIO clock configuration -----------------------------------------------*/ PeriphClkInit->SdioClockSelection = __HAL_RCC_GET_SDIO_SOURCE(); /* Get the SPDIFRX clock configuration ----------------------------------------------*/ PeriphClkInit->SpdifClockSelection = __HAL_RCC_GET_SPDIFRX_SOURCE(); /* Get the TIM Prescaler configuration --------------------------------------------*/ if ((RCC->DCKCFGR & RCC_DCKCFGR_TIMPRE) == RESET) { PeriphClkInit->TIMPresSelection = RCC_TIMPRES_DESACTIVATED; } else { PeriphClkInit->TIMPresSelection = RCC_TIMPRES_ACTIVATED; } } /** * @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 tmpreg1 = 0; /* This variable used to store the SAI clock frequency (value in Hz) */ uint32_t frequency = 0; /* This variable used to store the VCO Input (value in Hz) */ uint32_t vcoinput = 0; /* This variable used to store the SAI clock source */ uint32_t saiclocksource = 0; if ((PeriphClk == RCC_PERIPHCLK_SAI1) || (PeriphClk == RCC_PERIPHCLK_SAI2)) { saiclocksource = RCC->DCKCFGR; saiclocksource &= (RCC_DCKCFGR_SAI1SRC | RCC_DCKCFGR_SAI2SRC); switch (saiclocksource) { case 0: /* PLLSAI is the clock source for SAI*/ { /* Configure the PLLSAI division factor */ /* PLLSAI_VCO Input = PLL_SOURCE/PLLSAIM */ if((RCC->PLLCFGR & RCC_PLLCFGR_PLLSRC) == RCC_PLLSOURCE_HSI) { /* In Case the PLL Source is HSI (Internal Clock) */ vcoinput = (HSI_VALUE / (uint32_t)(RCC->PLLSAICFGR & RCC_PLLSAICFGR_PLLSAIM)); } else { /* In Case the PLL Source is HSE (External Clock) */ vcoinput = ((HSE_VALUE / (uint32_t)(RCC->PLLSAICFGR & RCC_PLLSAICFGR_PLLSAIM))); } /* PLLSAI_VCO Output = PLLSAI_VCO Input * PLLSAIN */ /* SAI_CLK(first level) = PLLSAI_VCO Output/PLLSAIQ */ tmpreg1 = (RCC->PLLSAICFGR & RCC_PLLSAICFGR_PLLSAIQ) >> 24; frequency = (vcoinput * ((RCC->PLLSAICFGR & RCC_PLLSAICFGR_PLLSAIN) >> 6))/(tmpreg1); /* SAI_CLK_x = SAI_CLK(first level)/PLLSAIDIVQ */ tmpreg1 = (((RCC->DCKCFGR & RCC_DCKCFGR_PLLSAIDIVQ) >> 8) + 1); frequency = frequency/(tmpreg1); break; } case RCC_DCKCFGR_SAI1SRC_0: /* PLLI2S is the clock source for SAI*/ case RCC_DCKCFGR_SAI2SRC_0: /* PLLI2S is the clock source for SAI*/ { /* Configure the PLLI2S division factor */ /* PLLI2S_VCO Input = PLL_SOURCE/PLLI2SM */ if((RCC->PLLCFGR & RCC_PLLCFGR_PLLSRC) == RCC_PLLSOURCE_HSI) { /* In Case the PLL Source is HSI (Internal Clock) */ vcoinput = (HSI_VALUE / (uint32_t)(RCC->PLLI2SCFGR & RCC_PLLI2SCFGR_PLLI2SM)); } else { /* In Case the PLL Source is HSE (External Clock) */ vcoinput = ((HSE_VALUE / (uint32_t)(RCC->PLLI2SCFGR & RCC_PLLI2SCFGR_PLLI2SM))); } /* PLLI2S_VCO Output = PLLI2S_VCO Input * PLLI2SN */ /* SAI_CLK(first level) = PLLI2S_VCO Output/PLLI2SQ */ tmpreg1 = (RCC->PLLI2SCFGR & RCC_PLLI2SCFGR_PLLI2SQ) >> 24; frequency = (vcoinput * ((RCC->PLLI2SCFGR & RCC_PLLI2SCFGR_PLLI2SN) >> 6))/(tmpreg1); /* SAI_CLK_x = SAI_CLK(first level)/PLLI2SDIVQ */ tmpreg1 = ((RCC->DCKCFGR & RCC_DCKCFGR_PLLI2SDIVQ) + 1); frequency = frequency/(tmpreg1); break; } case RCC_DCKCFGR_SAI1SRC_1: /* PLLR is the clock source for SAI*/ case RCC_DCKCFGR_SAI2SRC_1: /* PLLR is the clock source for SAI*/ { /* Configure the PLLI2S division factor */ /* PLL_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))); } /* PLL_VCO Output = PLL_VCO Input * PLLN */ /* SAI_CLK_x = PLL_VCO Output/PLLR */ tmpreg1 = (RCC->PLLCFGR & RCC_PLLCFGR_PLLR) >> 28; frequency = (vcoinput * ((RCC->PLLCFGR & RCC_PLLCFGR_PLLN) >> 6))/(tmpreg1); break; } case RCC_DCKCFGR_SAI1SRC: /* External clock is the clock source for SAI*/ { frequency = EXTERNAL_CLOCK_VALUE; break; } case RCC_DCKCFGR_SAI2SRC: /* PLLSRC(HSE or HSI) is the clock source for SAI*/ { if((RCC->PLLCFGR & RCC_PLLCFGR_PLLSRC) == RCC_PLLSOURCE_HSI) { /* In Case the PLL Source is HSI (Internal Clock) */ frequency = (uint32_t)(HSI_VALUE); } else { /* In Case the PLL Source is HSE (External Clock) */ frequency = (uint32_t)(HSE_VALUE); } break; } default : { break; } } } return frequency; } #endif /* STM32F446xx */ #if defined(STM32F427xx) || defined(STM32F437xx) || defined(STM32F429xx) || defined(STM32F439xx) /** * @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 and TIM). * * @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 are set to their reset values. * * @retval HAL status */ HAL_StatusTypeDef HAL_RCCEx_PeriphCLKConfig(RCC_PeriphCLKInitTypeDef *PeriphClkInit) { uint32_t tickstart = 0; uint32_t tmpreg1 = 0; /* Check the parameters */ assert_param(IS_RCC_PERIPHCLOCK(PeriphClkInit->PeriphClockSelection)); /*----------------------- SAI/I2S Configuration (PLLI2S) -------------------------*/ /*----------------------- Common configuration SAI/I2S ---------------------------*/ /* In Case of SAI or I2S Clock Configuration through PLLI2S, PLLI2SN division factor is common parameters for both peripherals */ if((((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_I2S) == RCC_PERIPHCLK_I2S) || (((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_SAI_PLLI2S) == RCC_PERIPHCLK_SAI_PLLI2S)) { /* check for Parameters */ assert_param(IS_RCC_PLLI2SN_VALUE(PeriphClkInit->PLLI2S.PLLI2SN)); /* Disable the PLLI2S */ __HAL_RCC_PLLI2S_DISABLE(); /* Get 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; } } /*---------------------------- I2S configuration -------------------------------*/ /* In Case of I2S Clock Configuration through PLLI2S, PLLI2SR must be added only for I2S configuration */ if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_I2S) == (RCC_PERIPHCLK_I2S)) { /* check for Parameters */ assert_param(IS_RCC_PLLI2SR_VALUE(PeriphClkInit->PLLI2S.PLLI2SR)); /* Configure the PLLI2S division factors */ /* PLLI2S_VCO = f(VCO clock) = f(PLLI2S clock input) × (PLLI2SN/PLLM) */ /* I2SCLK = f(PLLI2S clock output) = f(VCO clock) / PLLI2SR */ __HAL_RCC_PLLI2S_CONFIG(PeriphClkInit->PLLI2S.PLLI2SN , PeriphClkInit->PLLI2S.PLLI2SR); } /*---------------------------- SAI configuration -------------------------------*/ /* In Case of SAI Clock Configuration through PLLI2S, PLLI2SQ and PLLI2S_DIVQ must be added only for SAI configuration */ if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_SAI_PLLI2S) == (RCC_PERIPHCLK_SAI_PLLI2S)) { /* Check the PLLI2S division factors */ assert_param(IS_RCC_PLLI2SQ_VALUE(PeriphClkInit->PLLI2S.PLLI2SQ)); assert_param(IS_RCC_PLLI2S_DIVQ_VALUE(PeriphClkInit->PLLI2SDivQ)); /* Read PLLI2SR value from PLLI2SCFGR register (this value is not need for SAI configuration) */ 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_SAICLK_CONFIG(PeriphClkInit->PLLI2S.PLLI2SN , PeriphClkInit->PLLI2S.PLLI2SQ , tmpreg1); /* SAI_CLK_x = SAI_CLK(first level)/PLLI2SDIVQ */ __HAL_RCC_PLLI2S_PLLSAICLKDIVQ_CONFIG(PeriphClkInit->PLLI2SDivQ); } /* Enable the PLLI2S */ __HAL_RCC_PLLI2S_ENABLE(); /* Get 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; } } } /*----------------------- SAI/LTDC Configuration (PLLSAI) ------------------*/ /*----------------------- Common configuration SAI/LTDC --------------------*/ /* In Case of SAI or LTDC Clock Configuration through PLLSAI, PLLSAIN division factor is common parameters for both peripherals */ if((((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_SAI_PLLSAI) == RCC_PERIPHCLK_SAI_PLLSAI) || (((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_LTDC) == RCC_PERIPHCLK_LTDC)) { /* Check the PLLSAI division factors */ assert_param(IS_RCC_PLLSAIN_VALUE(PeriphClkInit->PLLSAI.PLLSAIN)); /* Disable PLLSAI Clock */ __HAL_RCC_PLLSAI_DISABLE(); /* Get 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; } } /*---------------------------- SAI configuration -------------------------*/ /* In Case of SAI Clock Configuration through PLLSAI, PLLSAIQ and PLLSAI_DIVQ must be added only for SAI configuration */ if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_SAI_PLLSAI) == (RCC_PERIPHCLK_SAI_PLLSAI)) { assert_param(IS_RCC_PLLSAIQ_VALUE(PeriphClkInit->PLLSAI.PLLSAIQ)); assert_param(IS_RCC_PLLSAI_DIVQ_VALUE(PeriphClkInit->PLLSAIDivQ)); /* Read PLLSAIR value from PLLSAICFGR register (this value is not need for SAI configuration) */ tmpreg1 = ((RCC->PLLSAICFGR & RCC_PLLSAICFGR_PLLSAIR) >> 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 , PeriphClkInit->PLLSAI.PLLSAIQ, tmpreg1); /* SAI_CLK_x = SAI_CLK(first level)/PLLSAIDIVQ */ __HAL_RCC_PLLSAI_PLLSAICLKDIVQ_CONFIG(PeriphClkInit->PLLSAIDivQ); } /*---------------------------- 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 PLLSAIR value from PLLSAICFGR register (this value is not need for SAI configuration) */ tmpreg1 = ((RCC->PLLSAICFGR & RCC_PLLSAICFGR_PLLSAIQ) >> POSITION_VAL(RCC_PLLSAICFGR_PLLSAIQ)); /* 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, PeriphClkInit->PLLSAI.PLLSAIR); /* LTDC_CLK = LTDC_CLK(first level)/PLLSAIDIVR */ __HAL_RCC_PLLSAI_PLLSAICLKDIVR_CONFIG(PeriphClkInit->PLLSAIDivR); } /* Enable PLLSAI Clock */ __HAL_RCC_PLLSAI_ENABLE(); /* Get 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; } } } /*---------------------------- RTC configuration ---------------------------*/ if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_RTC) == (RCC_PERIPHCLK_RTC)) { /* Enable Power Clock*/ __HAL_RCC_PWR_CLK_ENABLE(); /* Enable write access to Backup domain */ PWR->CR |= PWR_CR_DBP; /* Get tick */ tickstart = HAL_GetTick(); while((PWR->CR & PWR_CR_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 */ if((RCC->BDCR & RCC_BDCR_RTCSEL) != (PeriphClkInit->RTCClockSelection & RCC_BDCR_RTCSEL)) { /* Store the content of BDCR register before the reset of Backup Domain */ tmpreg1 = (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 = tmpreg1; /* Wait for LSERDY if LSE was enabled */ if(HAL_IS_BIT_SET(tmpreg1, RCC_BDCR_LSERDY)) { /* Get 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)) { __HAL_RCC_TIMCLKPRESCALER(PeriphClkInit->TIMPresSelection); } return HAL_OK; } /** * @brief Configures the RCC_OscInitStruct according to the internal * RCC configuration registers. * @param PeriphClkInit: pointer to an RCC_PeriphCLKInitTypeDef structure that * will be configured. * @retval None */ void HAL_RCCEx_GetPeriphCLKConfig(RCC_PeriphCLKInitTypeDef *PeriphClkInit) { uint32_t tempreg; /* Set all possible values for the extended clock type parameter------------*/ PeriphClkInit->PeriphClockSelection = RCC_PERIPHCLK_I2S | RCC_PERIPHCLK_SAI_PLLSAI | RCC_PERIPHCLK_SAI_PLLI2S | RCC_PERIPHCLK_LTDC | RCC_PERIPHCLK_TIM | RCC_PERIPHCLK_RTC; /* Get the PLLI2S Clock configuration -----------------------------------------------*/ PeriphClkInit->PLLI2S.PLLI2SN = (uint32_t)((RCC->PLLI2SCFGR & RCC_PLLI2SCFGR_PLLI2SN) >> POSITION_VAL(RCC_PLLI2SCFGR_PLLI2SN)); PeriphClkInit->PLLI2S.PLLI2SR = (uint32_t)((RCC->PLLI2SCFGR & RCC_PLLI2SCFGR_PLLI2SR) >> POSITION_VAL(RCC_PLLI2SCFGR_PLLI2SR)); PeriphClkInit->PLLI2S.PLLI2SQ = (uint32_t)((RCC->PLLI2SCFGR & RCC_PLLI2SCFGR_PLLI2SQ) >> POSITION_VAL(RCC_PLLI2SCFGR_PLLI2SQ)); /* Get the PLLSAI Clock configuration -----------------------------------------------*/ PeriphClkInit->PLLSAI.PLLSAIN = (uint32_t)((RCC->PLLSAICFGR & RCC_PLLSAICFGR_PLLSAIN) >> POSITION_VAL(RCC_PLLSAICFGR_PLLSAIN)); PeriphClkInit->PLLSAI.PLLSAIR = (uint32_t)((RCC->PLLSAICFGR & RCC_PLLSAICFGR_PLLSAIR) >> POSITION_VAL(RCC_PLLSAICFGR_PLLSAIR)); PeriphClkInit->PLLSAI.PLLSAIQ = (uint32_t)((RCC->PLLSAICFGR & RCC_PLLSAICFGR_PLLSAIQ) >> POSITION_VAL(RCC_PLLSAICFGR_PLLSAIQ)); /* Get the PLLSAI/PLLI2S division factors -----------------------------------------------*/ PeriphClkInit->PLLI2SDivQ = (uint32_t)((RCC->DCKCFGR & RCC_DCKCFGR_PLLI2SDIVQ) >> POSITION_VAL(RCC_DCKCFGR_PLLI2SDIVQ)); PeriphClkInit->PLLSAIDivQ = (uint32_t)((RCC->DCKCFGR & RCC_DCKCFGR_PLLSAIDIVQ) >> POSITION_VAL(RCC_DCKCFGR_PLLSAIDIVQ)); PeriphClkInit->PLLSAIDivR = (uint32_t)(RCC->DCKCFGR & RCC_DCKCFGR_PLLSAIDIVR); /* Get the RTC Clock configuration -----------------------------------------------*/ tempreg = (RCC->CFGR & RCC_CFGR_RTCPRE); PeriphClkInit->RTCClockSelection = (uint32_t)((tempreg) | (RCC->BDCR & RCC_BDCR_RTCSEL)); if ((RCC->DCKCFGR & RCC_DCKCFGR_TIMPRE) == RESET) { PeriphClkInit->TIMPresSelection = RCC_TIMPRES_DESACTIVATED; } else { PeriphClkInit->TIMPresSelection = RCC_TIMPRES_ACTIVATED; } } #endif /* STM32F427xx || STM32F437xx || STM32F429xx || STM32F439xx */ #if defined(STM32F405xx) || defined(STM32F415xx) || defined(STM32F407xx)|| defined(STM32F417xx) ||\ defined(STM32F401xC) || defined(STM32F401xE) || defined(STM32F411xE) /** * @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 and RTC clocks). * * @note A caution to be taken when HAL_RCCEx_PeriphCLKConfig() is used to select RTC clock selection, in this case * the Reset of Backup domain will be applied in order to modify the RTC Clock source as consequence all backup * domain (RTC and RCC_BDCR register expect BKPSRAM) will be reset * * @retval HAL status */ HAL_StatusTypeDef HAL_RCCEx_PeriphCLKConfig(RCC_PeriphCLKInitTypeDef *PeriphClkInit) { uint32_t tickstart = 0; uint32_t tmpreg1 = 0; /* Check the parameters */ assert_param(IS_RCC_PERIPHCLOCK(PeriphClkInit->PeriphClockSelection)); /*---------------------------- I2S configuration ---------------------------*/ if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_I2S) == (RCC_PERIPHCLK_I2S)) { /* check for Parameters */ assert_param(IS_RCC_PLLI2SR_VALUE(PeriphClkInit->PLLI2S.PLLI2SR)); assert_param(IS_RCC_PLLI2SN_VALUE(PeriphClkInit->PLLI2S.PLLI2SN)); #if defined(STM32F411xE) assert_param(IS_RCC_PLLI2SM_VALUE(PeriphClkInit->PLLI2S.PLLI2SM)); #endif /* STM32F411xE */ /* Disable the PLLI2S */ __HAL_RCC_PLLI2S_DISABLE(); /* Get 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; } } #if defined(STM32F411xE) /* Configure the PLLI2S division factors */ /* PLLI2S_VCO = f(VCO clock) = f(PLLI2S clock input) × (PLLI2SN/PLLI2SM) */ /* I2SCLK = f(PLLI2S clock output) = f(VCO clock) / PLLI2SR */ __HAL_RCC_PLLI2S_I2SCLK_CONFIG(PeriphClkInit->PLLI2S.PLLI2SM, PeriphClkInit->PLLI2S.PLLI2SN, PeriphClkInit->PLLI2S.PLLI2SR); #else /* Configure the PLLI2S division factors */ /* PLLI2S_VCO = f(VCO clock) = f(PLLI2S clock input) × (PLLI2SN/PLLM) */ /* I2SCLK = f(PLLI2S clock output) = f(VCO clock) / PLLI2SR */ __HAL_RCC_PLLI2S_CONFIG(PeriphClkInit->PLLI2S.PLLI2SN , PeriphClkInit->PLLI2S.PLLI2SR); #endif /* STM32F411xE */ /* Enable the PLLI2S */ __HAL_RCC_PLLI2S_ENABLE(); /* Get 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; } } } /*---------------------------- RTC configuration ---------------------------*/ if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_RTC) == (RCC_PERIPHCLK_RTC)) { /* Enable Power Clock*/ __HAL_RCC_PWR_CLK_ENABLE(); /* Enable write access to Backup domain */ PWR->CR |= PWR_CR_DBP; /* Get tick */ tickstart = HAL_GetTick(); while((PWR->CR & PWR_CR_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 */ if((RCC->BDCR & RCC_BDCR_RTCSEL) != (PeriphClkInit->RTCClockSelection & RCC_BDCR_RTCSEL)) { /* Store the content of BDCR register before the reset of Backup Domain */ tmpreg1 = (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 = tmpreg1; /* Wait for LSERDY if LSE was enabled */ if(HAL_IS_BIT_SET(tmpreg1, RCC_BDCR_LSERDY)) { /* Get 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); } } return HAL_OK; } /** * @brief Configures the RCC_OscInitStruct according to the internal * RCC configuration registers. * @param PeriphClkInit: pointer to an RCC_PeriphCLKInitTypeDef structure that * will be configured. * @retval None */ void HAL_RCCEx_GetPeriphCLKConfig(RCC_PeriphCLKInitTypeDef *PeriphClkInit) { uint32_t tempreg; /* Set all possible values for the extended clock type parameter------------*/ PeriphClkInit->PeriphClockSelection = RCC_PERIPHCLK_I2S | RCC_PERIPHCLK_RTC; /* Get the PLLI2S Clock configuration -----------------------------------------------*/ PeriphClkInit->PLLI2S.PLLI2SN = (uint32_t)((RCC->PLLI2SCFGR & RCC_PLLI2SCFGR_PLLI2SN) >> POSITION_VAL(RCC_PLLI2SCFGR_PLLI2SN)); PeriphClkInit->PLLI2S.PLLI2SR = (uint32_t)((RCC->PLLI2SCFGR & RCC_PLLI2SCFGR_PLLI2SR) >> POSITION_VAL(RCC_PLLI2SCFGR_PLLI2SR)); #if defined(STM32F411xE) PeriphClkInit->PLLI2S.PLLI2SM = (uint32_t)(RCC->PLLI2SCFGR & RCC_PLLI2SCFGR_PLLI2SM); #endif /* STM32F411xE */ /* Get the RTC Clock configuration -----------------------------------------------*/ tempreg = (RCC->CFGR & RCC_CFGR_RTCPRE); PeriphClkInit->RTCClockSelection = (uint32_t)((tempreg) | (RCC->BDCR & RCC_BDCR_RTCSEL)); } #endif /* STM32F405xx || STM32F415xx || STM32F407xx || STM32F417xx || STM32F401xC || STM32F401xE || STM32F411xE */ #if defined(STM32F411xE) || defined(STM32F446xx) /** * @brief Select LSE mode * * @note This mode is only available for STM32F411xx devices. * * @param Mode: specifies the LSE mode. * This parameter can be one of the following values: * @arg RCC_LSE_LOWPOWER_MODE: LSE oscillator in low power mode selection * @arg RCC_LSE_HIGHDRIVE_MODE: LSE oscillator in High Drive mode selection * @retval None */ void HAL_RCCEx_SelectLSEMode(uint8_t Mode) { /* Check the parameters */ assert_param(IS_RCC_LSE_MODE(Mode)); if(Mode == RCC_LSE_HIGHDRIVE_MODE) { SET_BIT(RCC->BDCR, RCC_BDCR_LSEMOD); } else { CLEAR_BIT(RCC->BDCR, RCC_BDCR_LSEMOD); } } #endif /* STM32F411xE || STM32F446xx */ #if defined(STM32F446xx) /** * @brief Initializes the RCC Oscillators according to the specified parameters in the * RCC_OscInitTypeDef. * @param RCC_OscInitStruct: pointer to an RCC_OscInitTypeDef structure that * contains the configuration information for the RCC Oscillators. * @note The PLL is not disabled when used as system clock. * @note This function add the PLL/PLLR factor management during PLL configuration this feature is only available in STM32F446xx devices * @retval HAL status */ HAL_StatusTypeDef HAL_RCC_OscConfig(RCC_OscInitTypeDef *RCC_OscInitStruct) { uint32_t tickstart = 0; /* Check the parameters */ assert_param(IS_RCC_OSCILLATORTYPE(RCC_OscInitStruct->OscillatorType)); /*------------------------------- HSE Configuration ------------------------*/ if(((RCC_OscInitStruct->OscillatorType) & RCC_OSCILLATORTYPE_HSE) == RCC_OSCILLATORTYPE_HSE) { /* Check the parameters */ assert_param(IS_RCC_HSE(RCC_OscInitStruct->HSEState)); /* When the HSE is used as system clock or clock source for PLL in these cases HSE will not disabled */ if((__HAL_RCC_GET_SYSCLK_SOURCE() == RCC_CFGR_SWS_HSE) ||\ ((__HAL_RCC_GET_SYSCLK_SOURCE() == RCC_CFGR_SWS_PLL) && ((RCC->PLLCFGR & RCC_PLLCFGR_PLLSRC) == RCC_PLLCFGR_PLLSRC_HSE)) ||\ ((__HAL_RCC_GET_SYSCLK_SOURCE() == RCC_CFGR_SWS_PLLR) && ((RCC->PLLCFGR & RCC_PLLCFGR_PLLSRC) == RCC_PLLCFGR_PLLSRC_HSE))) { if((__HAL_RCC_GET_FLAG(RCC_FLAG_HSERDY) != RESET) && (RCC_OscInitStruct->HSEState == RCC_HSE_OFF)) { return HAL_ERROR; } } else { /* Reset HSEON and HSEBYP bits before configuring the HSE --------------*/ __HAL_RCC_HSE_CONFIG(RCC_HSE_OFF); /* Get Start Tick*/ tickstart = HAL_GetTick(); /* Wait till HSE is disabled */ while(__HAL_RCC_GET_FLAG(RCC_FLAG_HSERDY) != RESET) { if((HAL_GetTick() - tickstart ) > HSE_TIMEOUT_VALUE) { return HAL_TIMEOUT; } } /* Set the new HSE configuration ---------------------------------------*/ __HAL_RCC_HSE_CONFIG(RCC_OscInitStruct->HSEState); /* Check the HSE State */ if((RCC_OscInitStruct->HSEState) != RCC_HSE_OFF) { /* Get Start Tick*/ tickstart = HAL_GetTick(); /* Wait till HSE is ready */ while(__HAL_RCC_GET_FLAG(RCC_FLAG_HSERDY) == RESET) { if((HAL_GetTick() - tickstart ) > HSE_TIMEOUT_VALUE) { return HAL_TIMEOUT; } } } else { /* Get Start Tick*/ tickstart = HAL_GetTick(); /* Wait till HSE is bypassed or disabled */ while(__HAL_RCC_GET_FLAG(RCC_FLAG_HSERDY) != RESET) { if((HAL_GetTick() - tickstart ) > HSE_TIMEOUT_VALUE) { return HAL_TIMEOUT; } } } } } /*----------------------------- HSI Configuration --------------------------*/ if(((RCC_OscInitStruct->OscillatorType) & RCC_OSCILLATORTYPE_HSI) == RCC_OSCILLATORTYPE_HSI) { /* Check the parameters */ assert_param(IS_RCC_HSI(RCC_OscInitStruct->HSIState)); assert_param(IS_RCC_CALIBRATION_VALUE(RCC_OscInitStruct->HSICalibrationValue)); /* Check if HSI is used as system clock or as PLL source when PLL is selected as system clock */ if((__HAL_RCC_GET_SYSCLK_SOURCE() == RCC_CFGR_SWS_HSI) ||\ ((__HAL_RCC_GET_SYSCLK_SOURCE() == RCC_CFGR_SWS_PLL) && ((RCC->PLLCFGR & RCC_PLLCFGR_PLLSRC) == RCC_PLLCFGR_PLLSRC_HSI)) ||\ ((__HAL_RCC_GET_SYSCLK_SOURCE() == RCC_CFGR_SWS_PLLR) && ((RCC->PLLCFGR & RCC_PLLCFGR_PLLSRC) == RCC_PLLCFGR_PLLSRC_HSI))) { /* When HSI is used as system clock it will not disabled */ if((__HAL_RCC_GET_FLAG(RCC_FLAG_HSIRDY) != RESET) && (RCC_OscInitStruct->HSIState != RCC_HSI_ON)) { return HAL_ERROR; } /* Otherwise, just the calibration is allowed */ else { /* Adjusts the Internal High Speed oscillator (HSI) calibration value.*/ __HAL_RCC_HSI_CALIBRATIONVALUE_ADJUST(RCC_OscInitStruct->HSICalibrationValue); } } else { /* Check the HSI State */ if((RCC_OscInitStruct->HSIState)!= RCC_HSI_OFF) { /* Enable the Internal High Speed oscillator (HSI). */ __HAL_RCC_HSI_ENABLE(); /* Get Start Tick*/ tickstart = HAL_GetTick(); /* Wait till HSI is ready */ while(__HAL_RCC_GET_FLAG(RCC_FLAG_HSIRDY) == RESET) { if((HAL_GetTick() - tickstart ) > HSI_TIMEOUT_VALUE) { return HAL_TIMEOUT; } } /* Adjusts the Internal High Speed oscillator (HSI) calibration value.*/ __HAL_RCC_HSI_CALIBRATIONVALUE_ADJUST(RCC_OscInitStruct->HSICalibrationValue); } else { /* Disable the Internal High Speed oscillator (HSI). */ __HAL_RCC_HSI_DISABLE(); /* Get Start Tick*/ tickstart = HAL_GetTick(); /* Wait till HSI is ready */ while(__HAL_RCC_GET_FLAG(RCC_FLAG_HSIRDY) != RESET) { if((HAL_GetTick() - tickstart ) > HSI_TIMEOUT_VALUE) { return HAL_TIMEOUT; } } } } } /*------------------------------ LSI Configuration -------------------------*/ if(((RCC_OscInitStruct->OscillatorType) & RCC_OSCILLATORTYPE_LSI) == RCC_OSCILLATORTYPE_LSI) { /* Check the parameters */ assert_param(IS_RCC_LSI(RCC_OscInitStruct->LSIState)); /* Check the LSI State */ if((RCC_OscInitStruct->LSIState)!= RCC_LSI_OFF) { /* Enable the Internal Low Speed oscillator (LSI). */ __HAL_RCC_LSI_ENABLE(); /* Get Start Tick*/ tickstart = HAL_GetTick(); /* Wait till LSI is ready */ while(__HAL_RCC_GET_FLAG(RCC_FLAG_LSIRDY) == RESET) { if((HAL_GetTick() - tickstart ) > LSI_TIMEOUT_VALUE) { return HAL_TIMEOUT; } } } else { /* Disable the Internal Low Speed oscillator (LSI). */ __HAL_RCC_LSI_DISABLE(); /* Get Start Tick*/ tickstart = HAL_GetTick(); /* Wait till LSI is ready */ while(__HAL_RCC_GET_FLAG(RCC_FLAG_LSIRDY) != RESET) { if((HAL_GetTick() - tickstart ) > LSI_TIMEOUT_VALUE) { return HAL_TIMEOUT; } } } } /*------------------------------ LSE Configuration -------------------------*/ if(((RCC_OscInitStruct->OscillatorType) & RCC_OSCILLATORTYPE_LSE) == RCC_OSCILLATORTYPE_LSE) { /* Check the parameters */ assert_param(IS_RCC_LSE(RCC_OscInitStruct->LSEState)); /* Enable Power Clock*/ __HAL_RCC_PWR_CLK_ENABLE(); /* Enable write access to Backup domain */ PWR->CR |= PWR_CR_DBP; /* Wait for Backup domain Write protection disable */ tickstart = HAL_GetTick(); while((PWR->CR & PWR_CR_DBP) == RESET) { if((HAL_GetTick() - tickstart ) > RCC_DBP_TIMEOUT_VALUE) { return HAL_TIMEOUT; } } /* Reset LSEON and LSEBYP bits before configuring the LSE ----------------*/ __HAL_RCC_LSE_CONFIG(RCC_LSE_OFF); /* 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; } } /* Set the new LSE configuration -----------------------------------------*/ __HAL_RCC_LSE_CONFIG(RCC_OscInitStruct->LSEState); /* Check the LSE State */ if((RCC_OscInitStruct->LSEState) != RCC_LSE_OFF) { /* 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; } } } else { /* 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; } } } } /*-------------------------------- PLL Configuration -----------------------*/ /* Check the parameters */ assert_param(IS_RCC_PLL(RCC_OscInitStruct->PLL.PLLState)); if ((RCC_OscInitStruct->PLL.PLLState) != RCC_PLL_NONE) { /* Check if the PLL is used as system clock or not */ if(__HAL_RCC_GET_SYSCLK_SOURCE() != RCC_CFGR_SWS_PLL) { if((RCC_OscInitStruct->PLL.PLLState) == RCC_PLL_ON) { /* Check the parameters */ assert_param(IS_RCC_PLLSOURCE(RCC_OscInitStruct->PLL.PLLSource)); assert_param(IS_RCC_PLLM_VALUE(RCC_OscInitStruct->PLL.PLLM)); assert_param(IS_RCC_PLLN_VALUE(RCC_OscInitStruct->PLL.PLLN)); assert_param(IS_RCC_PLLP_VALUE(RCC_OscInitStruct->PLL.PLLP)); assert_param(IS_RCC_PLLQ_VALUE(RCC_OscInitStruct->PLL.PLLQ)); assert_param(IS_RCC_PLLR_VALUE(RCC_OscInitStruct->PLL.PLLR)); /* Disable the main PLL. */ __HAL_RCC_PLL_DISABLE(); /* Get Start Tick*/ tickstart = HAL_GetTick(); /* Wait till PLL is ready */ while(__HAL_RCC_GET_FLAG(RCC_FLAG_PLLRDY) != RESET) { if((HAL_GetTick() - tickstart ) > PLL_TIMEOUT_VALUE) { return HAL_TIMEOUT; } } /* Configure the main PLL clock source, multiplication and division factors. */ __HAL_RCC_PLL_CONFIG(RCC_OscInitStruct->PLL.PLLSource, RCC_OscInitStruct->PLL.PLLM, RCC_OscInitStruct->PLL.PLLN, RCC_OscInitStruct->PLL.PLLP, RCC_OscInitStruct->PLL.PLLQ, RCC_OscInitStruct->PLL.PLLR); /* Enable the main PLL. */ __HAL_RCC_PLL_ENABLE(); /* Get Start Tick*/ tickstart = HAL_GetTick(); /* Wait till PLL is ready */ while(__HAL_RCC_GET_FLAG(RCC_FLAG_PLLRDY) == RESET) { if((HAL_GetTick() - tickstart ) > PLL_TIMEOUT_VALUE) { return HAL_TIMEOUT; } } } else { /* Disable the main PLL. */ __HAL_RCC_PLL_DISABLE(); /* Get Start Tick*/ tickstart = HAL_GetTick(); /* Wait till PLL is ready */ while(__HAL_RCC_GET_FLAG(RCC_FLAG_PLLRDY) != RESET) { if((HAL_GetTick() - tickstart ) > PLL_TIMEOUT_VALUE) { return HAL_TIMEOUT; } } } } else { return HAL_ERROR; } } return HAL_OK; } /** * @brief Configures the RCC_OscInitStruct according to the internal * RCC configuration registers. * @param RCC_OscInitStruct: pointer to an RCC_OscInitTypeDef structure that will be configured. * * @note This function is only available in case of STM32F446xx devices. * @note This function add the PLL/PLLR factor management * @retval None */ void HAL_RCC_GetOscConfig(RCC_OscInitTypeDef *RCC_OscInitStruct) { /* Set all possible values for the Oscillator type parameter ---------------*/ RCC_OscInitStruct->OscillatorType = RCC_OSCILLATORTYPE_HSE | RCC_OSCILLATORTYPE_HSI | RCC_OSCILLATORTYPE_LSE | RCC_OSCILLATORTYPE_LSI; /* Get the HSE configuration -----------------------------------------------*/ if((RCC->CR &RCC_CR_HSEBYP) == RCC_CR_HSEBYP) { RCC_OscInitStruct->HSEState = RCC_HSE_BYPASS; } else if((RCC->CR &RCC_CR_HSEON) == RCC_CR_HSEON) { RCC_OscInitStruct->HSEState = RCC_HSE_ON; } else { RCC_OscInitStruct->HSEState = RCC_HSE_OFF; } /* Get the HSI configuration -----------------------------------------------*/ if((RCC->CR &RCC_CR_HSION) == RCC_CR_HSION) { RCC_OscInitStruct->HSIState = RCC_HSI_ON; } else { RCC_OscInitStruct->HSIState = RCC_HSI_OFF; } RCC_OscInitStruct->HSICalibrationValue = (uint32_t)((RCC->CR &RCC_CR_HSITRIM) >> POSITION_VAL(RCC_CR_HSITRIM)); /* Get the LSE configuration -----------------------------------------------*/ if((RCC->BDCR &RCC_BDCR_LSEBYP) == RCC_BDCR_LSEBYP) { RCC_OscInitStruct->LSEState = RCC_LSE_BYPASS; } else if((RCC->BDCR &RCC_BDCR_LSEON) == RCC_BDCR_LSEON) { RCC_OscInitStruct->LSEState = RCC_LSE_ON; } else { RCC_OscInitStruct->LSEState = RCC_LSE_OFF; } /* Get the LSI configuration -----------------------------------------------*/ if((RCC->CSR &RCC_CSR_LSION) == RCC_CSR_LSION) { RCC_OscInitStruct->LSIState = RCC_LSI_ON; } else { RCC_OscInitStruct->LSIState = RCC_LSI_OFF; } /* Get the PLL configuration -----------------------------------------------*/ if((RCC->CR &RCC_CR_PLLON) == RCC_CR_PLLON) { RCC_OscInitStruct->PLL.PLLState = RCC_PLL_ON; } else { RCC_OscInitStruct->PLL.PLLState = RCC_PLL_OFF; } RCC_OscInitStruct->PLL.PLLSource = (uint32_t)(RCC->PLLCFGR & RCC_PLLCFGR_PLLSRC); RCC_OscInitStruct->PLL.PLLM = (uint32_t)(RCC->PLLCFGR & RCC_PLLCFGR_PLLM); RCC_OscInitStruct->PLL.PLLN = (uint32_t)((RCC->PLLCFGR & RCC_PLLCFGR_PLLN) >> POSITION_VAL(RCC_PLLCFGR_PLLN)); RCC_OscInitStruct->PLL.PLLP = (uint32_t)((((RCC->PLLCFGR & RCC_PLLCFGR_PLLP) + RCC_PLLCFGR_PLLP_0) << 1) >> POSITION_VAL(RCC_PLLCFGR_PLLP)); RCC_OscInitStruct->PLL.PLLQ = (uint32_t)((RCC->PLLCFGR & RCC_PLLCFGR_PLLQ) >> POSITION_VAL(RCC_PLLCFGR_PLLQ)); RCC_OscInitStruct->PLL.PLLR = (uint32_t)((RCC->PLLCFGR & RCC_PLLCFGR_PLLR) >> POSITION_VAL(RCC_PLLCFGR_PLLR)); } /** * @brief Returns the SYSCLK frequency * * @note This function is only available in case of STM32F446xx devices. * @note This function add the PLL/PLLR System clock source * * @note The system frequency computed by this function is not the real * frequency in the chip. It is calculated based on the predefined * constant and the selected clock source: * @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 stm32f4xx_hal_conf.h 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 stm32f4xx_hal_conf.h 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 not correct when using fractional * value for HSE crystal. * * @note This function can be used by the user application to compute the * baudrate for the communication peripherals or configure other parameters. * * @note Each time SYSCLK changes, this function must be called to update the * right SYSCLK value. Otherwise, any configuration based on this function will be incorrect. * * * @retval SYSCLK frequency */ uint32_t HAL_RCC_GetSysClockFreq(void) { uint32_t pllm = 0; uint32_t pllvco = 0; uint32_t pllp = 0; uint32_t pllr = 0; uint32_t sysclockfreq = 0; /* Get SYSCLK source -------------------------------------------------------*/ switch (RCC->CFGR & RCC_CFGR_SWS) { case RCC_CFGR_SWS_HSI: /* HSI used as system clock source */ { sysclockfreq = HSI_VALUE; break; } case RCC_CFGR_SWS_HSE: /* HSE used as system clock source */ { sysclockfreq = HSE_VALUE; break; } case RCC_CFGR_SWS_PLL: /* PLL/PLLP used as system clock source */ { /* PLL_VCO = (HSE_VALUE or HSI_VALUE / PLLM) * PLLN SYSCLK = PLL_VCO / PLLP */ pllm = RCC->PLLCFGR & RCC_PLLCFGR_PLLM; if(__HAL_RCC_GET_PLL_OSCSOURCE() != RCC_PLLSOURCE_HSI) { /* HSE used as PLL clock source */ pllvco = ((HSE_VALUE / pllm) * ((RCC->PLLCFGR & RCC_PLLCFGR_PLLN) >> POSITION_VAL(RCC_PLLCFGR_PLLN))); } else { /* HSI used as PLL clock source */ pllvco = ((HSI_VALUE / pllm) * ((RCC->PLLCFGR & RCC_PLLCFGR_PLLN) >> POSITION_VAL(RCC_PLLCFGR_PLLN))); } pllp = ((((RCC->PLLCFGR & RCC_PLLCFGR_PLLP) >> POSITION_VAL(RCC_PLLCFGR_PLLP)) + 1 ) *2); sysclockfreq = pllvco/pllp; break; } case RCC_CFGR_SWS_PLLR: /* PLL/PLLR used as system clock source */ { /* PLL_VCO = (HSE_VALUE or HSI_VALUE / PLLM) * PLLN SYSCLK = PLL_VCO / PLLR */ pllm = RCC->PLLCFGR & RCC_PLLCFGR_PLLM; if(__HAL_RCC_GET_PLL_OSCSOURCE() != RCC_PLLSOURCE_HSI) { /* HSE used as PLL clock source */ pllvco = ((HSE_VALUE / pllm) * ((RCC->PLLCFGR & RCC_PLLCFGR_PLLN) >> POSITION_VAL(RCC_PLLCFGR_PLLN))); } else { /* HSI used as PLL clock source */ pllvco = ((HSI_VALUE / pllm) * ((RCC->PLLCFGR & RCC_PLLCFGR_PLLN) >> POSITION_VAL(RCC_PLLCFGR_PLLN))); } pllr = ((RCC->PLLCFGR & RCC_PLLCFGR_PLLR) >> POSITION_VAL(RCC_PLLCFGR_PLLR)); sysclockfreq = pllvco/pllr; break; } default: { sysclockfreq = HSI_VALUE; break; } } return sysclockfreq; } #endif /* STM32F446xx */ /** * @} */ /** * @} */ #endif /* HAL_RCC_MODULE_ENABLED */ /** * @} */ /** * @} */ /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/