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Diffstat (limited to 'Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_rcc_ex.c')
| -rw-r--r-- | Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_rcc_ex.c | 512 |
1 files changed, 512 insertions, 0 deletions
diff --git a/Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_rcc_ex.c b/Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_rcc_ex.c new file mode 100644 index 0000000..c6808c3 --- /dev/null +++ b/Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_rcc_ex.c @@ -0,0 +1,512 @@ +/** + ****************************************************************************** + * @file stm32f4xx_hal_rcc_ex.c + * @author MCD Application Team + * @version V1.0.0 + * @date 18-February-2014 + * @brief Extension RCC HAL module driver. + * This file provides firmware functions to manage the following + * functionalities RCC extension peripheral: + * + Extended Peripheral Control functions + * + ****************************************************************************** + * @attention + * + * <h2><center>© COPYRIGHT(c) 2014 STMicroelectronics</center></h2> + * + * 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 RCC + * @brief RCC HAL module driver + * @{ + */ + +#ifdef HAL_RCC_MODULE_ENABLED + +/* Private typedef -----------------------------------------------------------*/ +/* Private define ------------------------------------------------------------*/ +#define PLLI2S_TIMEOUT_VALUE 100 /* Timeout value fixed to 100 ms */ +#define PLLSAI_TIMEOUT_VALUE 100 /* Timeout value fixed to 100 ms */ +/* Private macro -------------------------------------------------------------*/ +/* Private variables ---------------------------------------------------------*/ +/* Private function prototypes -----------------------------------------------*/ +/* Private functions ---------------------------------------------------------*/ + +/** @defgroup RCCEx_Private_Functions + * @{ + */ + +/** @defgroup RCCEx_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(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 timeout = 0; + uint32_t tmpreg = 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 new Timeout value */ + timeout = HAL_GetTick() + PLLI2S_TIMEOUT_VALUE; + /* Wait till PLLI2S is disabled */ + while(__HAL_RCC_GET_FLAG(RCC_FLAG_PLLI2SRDY) != RESET) + { + if(HAL_GetTick() >= timeout) + { + /* 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) */ + tmpreg = ((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 , tmpreg); + /* SAI_CLK_x = SAI_CLK(first level)/PLLI2SDIVQ */ + __HAL_RCC_PLLI2S_PLLSAICLKDIVQ_CONFIG(PeriphClkInit->PLLI2SDivQ); + } + + /* Enable the PLLI2S */ + __HAL_RCC_PLLI2S_ENABLE(); + /* Get new Timeout value */ + timeout = HAL_GetTick() + PLLI2S_TIMEOUT_VALUE; + /* Wait till PLLI2S is ready */ + while(__HAL_RCC_GET_FLAG(RCC_FLAG_PLLI2SRDY) == RESET) + { + if(HAL_GetTick() >= timeout) + { + /* 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 new Timeout value */ + timeout = HAL_GetTick() + PLLSAI_TIMEOUT_VALUE; + /* Wait till PLLSAI is disabled */ + while(__HAL_RCC_PLLSAI_GET_FLAG() != RESET) + { + if(HAL_GetTick() >= timeout) + { + /* 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) */ + tmpreg = ((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, tmpreg); + /* 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) */ + tmpreg = ((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 , tmpreg, 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 new Timeout value */ + timeout = HAL_GetTick() + PLLSAI_TIMEOUT_VALUE; + /* Wait till PLLSAI is ready */ + while(__HAL_RCC_PLLSAI_GET_FLAG() == RESET) + { + if(HAL_GetTick() >= timeout) + { + /* return in case of Timeout detected */ + return HAL_TIMEOUT; + } + } + } + + + /*---------------------------- RTC configuration -------------------------------*/ + if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_RTC) == (RCC_PERIPHCLK_RTC)) + { + /* Enable Power Clock*/ + __PWR_CLK_ENABLE(); + + /* Enable write access to Backup domain */ + PWR->CR |= PWR_CR_DBP; + + /* Wait for Backup domain Write protection disable */ + timeout = HAL_GetTick() + DBP_TIMEOUT_VALUE; + + while((PWR->CR & PWR_CR_DBP) == RESET) + { + if(HAL_GetTick() >= timeout) + { + 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 */ + tmpreg = (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 = tmpreg; + } + + /* If LSE is selected as RTC clock source, wait for LSE reactivation */ + if(PeriphClkInit->RTCClockSelection == RCC_RTCCLKSOURCE_LSE) + { + /* Get timeout */ + timeout = HAL_GetTick() + LSE_TIMEOUT_VALUE; + + /* Wait till LSE is ready */ + while(__HAL_RCC_GET_FLAG(RCC_FLAG_LSERDY) == RESET) + { + if(HAL_GetTick() >= timeout) + { + 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 RCC_OscInitStruct: pointer to an RCC_OscInitTypeDef 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) +/** + * @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 timeout = 0; + uint32_t tmpreg = 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)); + + /* Disable the PLLI2S */ + __HAL_RCC_PLLI2S_DISABLE(); + /* Get new Timeout value */ + timeout = HAL_GetTick() + PLLI2S_TIMEOUT_VALUE; + /* Wait till PLLI2S is disabled */ + while(__HAL_RCC_GET_FLAG(RCC_FLAG_PLLI2SRDY) != RESET) + { + if(HAL_GetTick() >= timeout) + { + /* return in case of Timeout detected */ + return HAL_TIMEOUT; + } + } + /* 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); + + /* Enable the PLLI2S */ + __HAL_RCC_PLLI2S_ENABLE(); + /* Get new Timeout value */ + timeout = HAL_GetTick() + PLLI2S_TIMEOUT_VALUE; + /* Wait till PLLI2S is ready */ + while(__HAL_RCC_GET_FLAG(RCC_FLAG_PLLI2SRDY) == RESET) + { + if(HAL_GetTick() >= timeout) + { + /* return in case of Timeout detected */ + return HAL_TIMEOUT; + } + } + } + + /*---------------------------- RTC configuration -------------------------------*/ + if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_RTC) == (RCC_PERIPHCLK_RTC)) + { + /* Enable Power Clock*/ + __PWR_CLK_ENABLE(); + + /* Enable write access to Backup domain */ + PWR->CR |= PWR_CR_DBP; + + /* Wait for Backup domain Write protection disable */ + timeout = HAL_GetTick() + DBP_TIMEOUT_VALUE; + + while((PWR->CR & PWR_CR_DBP) == RESET) + { + if(HAL_GetTick() >= timeout) + { + 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 */ + tmpreg = (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 = tmpreg; + } + + /* If LSE is selected as RTC clock source, wait for LSE reactivation */ + if(PeriphClkInit->RTCClockSelection == RCC_RTCCLKSOURCE_LSE) + { + /* Get timeout */ + timeout = HAL_GetTick() + LSE_TIMEOUT_VALUE; + + /* Wait till LSE is ready */ + while(__HAL_RCC_GET_FLAG(RCC_FLAG_LSERDY) == RESET) + { + if(HAL_GetTick() >= timeout) + { + 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 RCC_OscInitStruct: pointer to an RCC_OscInitTypeDef 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)); + + /* 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 */ +/** + * @} + */ + +/** + * @} + */ + +#endif /* HAL_RCC_MODULE_ENABLED */ +/** + * @} + */ + +/** + * @} + */ + +/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |