/** ****************************************************************************** * @file stm32f3xx_hal_rcc_ex.c * @author MCD Application Team * @brief Extended 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 "stm32f3xx_hal.h" /** @addtogroup STM32F3xx_HAL_Driver * @{ */ #ifdef HAL_RCC_MODULE_ENABLED /** @defgroup RCCEx RCCEx * @brief RCC Extension HAL module driver. * @{ */ /* Private typedef -----------------------------------------------------------*/ /* Private define ------------------------------------------------------------*/ /* Private macro -------------------------------------------------------------*/ /** @defgroup RCCEx_Private_Macros RCCEx Private Macros * @{ */ /** * @} */ /* Private variables ---------------------------------------------------------*/ /* Private function prototypes -----------------------------------------------*/ /* Private functions ---------------------------------------------------------*/ #if defined(RCC_CFGR2_ADC1PRES) || defined(RCC_CFGR2_ADCPRE12) || defined(RCC_CFGR2_ADCPRE34) || defined(RCC_CFGR_USBPRE) \ || defined(RCC_CFGR3_TIM1SW) || defined(RCC_CFGR3_TIM2SW) || defined(RCC_CFGR3_TIM8SW) || defined(RCC_CFGR3_TIM15SW) \ || defined(RCC_CFGR3_TIM16SW) || defined(RCC_CFGR3_TIM17SW) || defined(RCC_CFGR3_TIM20SW) || defined(RCC_CFGR3_TIM34SW) \ || defined(RCC_CFGR3_HRTIM1SW) /** @defgroup RCCEx_Private_Functions RCCEx Private Functions * @{ */ static uint32_t RCC_GetPLLCLKFreq(void); /** * @} */ #endif /* RCC_CFGR2_ADC1PRES || RCC_CFGR2_ADCPRExx || RCC_CFGR3_TIMxSW || RCC_CFGR3_HRTIM1SW || RCC_CFGR_USBPRE */ /** @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) are set to their reset values. @endverbatim * @{ */ /** * @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 * (ADC, CEC, I2C, I2S, SDADC, HRTIM, TIM, USART, RTC and USB). * * @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 = 0U; uint32_t temp_reg = 0U; /* Check the parameters */ assert_param(IS_RCC_PERIPHCLOCK(PeriphClkInit->PeriphClockSelection)); /*---------------------------- 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)); FlagStatus pwrclkchanged = RESET; /* As soon as function is called to change RTC clock source, activation of the power domain is done. */ /* Requires to enable write access to Backup Domain of necessary */ if(__HAL_RCC_PWR_IS_CLK_DISABLED()) { __HAL_RCC_PWR_CLK_ENABLE(); pwrclkchanged = SET; } if(HAL_IS_BIT_CLR(PWR->CR, PWR_CR_DBP)) { /* Enable write access to Backup domain */ SET_BIT(PWR->CR, PWR_CR_DBP); /* Wait for Backup domain Write protection disable */ tickstart = HAL_GetTick(); while(HAL_IS_BIT_CLR(PWR->CR, PWR_CR_DBP)) { if((HAL_GetTick() - tickstart) > RCC_DBP_TIMEOUT_VALUE) { return HAL_TIMEOUT; } } } /* Reset the Backup domain only if the RTC Clock source selection is modified from reset value */ temp_reg = (RCC->BDCR & RCC_BDCR_RTCSEL); if((temp_reg != 0x00000000U) && (temp_reg != (PeriphClkInit->RTCClockSelection & RCC_BDCR_RTCSEL))) { /* Store the content of BDCR register before the reset of Backup Domain */ temp_reg = (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 = temp_reg; /* Wait for LSERDY if LSE was enabled */ if (HAL_IS_BIT_SET(temp_reg, 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); /* Require to disable power clock if necessary */ if(pwrclkchanged == SET) { __HAL_RCC_PWR_CLK_DISABLE(); } } /*------------------------------- 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); } #if defined(RCC_CFGR3_USART2SW) /*----------------------------- 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); } #endif /* RCC_CFGR3_USART2SW */ #if defined(RCC_CFGR3_USART3SW) /*------------------------------ 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); } #endif /* RCC_CFGR3_USART3SW */ /*------------------------------ 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); } #if defined(STM32F302xE) || defined(STM32F303xE)\ || defined(STM32F302xC) || defined(STM32F303xC)\ || defined(STM32F302x8) \ || defined(STM32F373xC) /*------------------------------ USB Configuration ------------------------*/ if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_USB) == RCC_PERIPHCLK_USB) { /* Check the parameters */ assert_param(IS_RCC_USBCLKSOURCE(PeriphClkInit->USBClockSelection)); /* Configure the USB clock source */ __HAL_RCC_USB_CONFIG(PeriphClkInit->USBClockSelection); } #endif /* STM32F302xE || STM32F303xE || */ /* STM32F302xC || STM32F303xC || */ /* STM32F302x8 || */ /* STM32F373xC */ #if defined(STM32F302xE) || defined(STM32F303xE) || defined(STM32F398xx)\ || defined(STM32F302xC) || defined(STM32F303xC) || defined(STM32F358xx)\ || defined(STM32F301x8) || defined(STM32F302x8) || defined(STM32F318xx)\ || defined(STM32F373xC) || defined(STM32F378xx) /*------------------------------ 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); } #endif /* STM32F302xE || STM32F303xE || STM32F398xx || */ /* STM32F302xC || STM32F303xC || STM32F358xx || */ /* STM32F301x8 || STM32F302x8 || STM32F318xx || */ /* STM32F373xC || STM32F378xx */ #if defined(STM32F302xE) || defined(STM32F303xE) || defined(STM32F398xx)\ || defined(STM32F301x8) || defined(STM32F302x8) || defined(STM32F318xx) /*------------------------------ 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); } #endif /* STM32F302xE || STM32F303xE || STM32F398xx || */ /* STM32F301x8 || STM32F302x8 || STM32F318xx */ #if defined(STM32F302xE) || defined(STM32F303xE) || defined(STM32F398xx)\ || defined(STM32F302xC) || defined(STM32F303xC) || defined(STM32F358xx) /*------------------------------ 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); } #endif /* STM32F302xE || STM32F303xE || STM32F398xx || */ /* STM32F302xC || STM32F303xC || STM32F358xx */ #if defined(STM32F302xE) || defined(STM32F303xE) || defined(STM32F398xx)\ || defined(STM32F302xC) || defined(STM32F303xC) || defined(STM32F358xx)\ || defined(STM32F301x8) || defined(STM32F302x8) || defined(STM32F318xx) /*------------------------------ I2S Configuration ------------------------*/ if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_I2S) == RCC_PERIPHCLK_I2S) { /* Check the parameters */ assert_param(IS_RCC_I2SCLKSOURCE(PeriphClkInit->I2sClockSelection)); /* Configure the I2S clock source */ __HAL_RCC_I2S_CONFIG(PeriphClkInit->I2sClockSelection); } #endif /* STM32F302xE || STM32F303xE || STM32F398xx || */ /* STM32F302xC || STM32F303xC || STM32F358xx || */ /* STM32F301x8 || STM32F302x8 || STM32F318xx */ #if defined(STM32F301x8) || defined(STM32F302x8) || defined(STM32F318xx) /*------------------------------ ADC1 clock Configuration ------------------*/ if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_ADC1) == RCC_PERIPHCLK_ADC1) { /* Check the parameters */ assert_param(IS_RCC_ADC1PLLCLK_DIV(PeriphClkInit->Adc1ClockSelection)); /* Configure the ADC1 clock source */ __HAL_RCC_ADC1_CONFIG(PeriphClkInit->Adc1ClockSelection); } #endif /* STM32F301x8 || STM32F302x8 || STM32F318xx */ #if defined(STM32F302xE) || defined(STM32F303xE) || defined(STM32F398xx)\ || defined(STM32F302xC) || defined(STM32F303xC) || defined(STM32F358xx)\ || defined(STM32F303x8) || defined(STM32F334x8) || defined(STM32F328xx) /*------------------------------ ADC1 & ADC2 clock Configuration -------------*/ if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_ADC12) == RCC_PERIPHCLK_ADC12) { /* Check the parameters */ assert_param(IS_RCC_ADC12PLLCLK_DIV(PeriphClkInit->Adc12ClockSelection)); /* Configure the ADC12 clock source */ __HAL_RCC_ADC12_CONFIG(PeriphClkInit->Adc12ClockSelection); } #endif /* STM32F302xE || STM32F303xE || STM32F398xx || */ /* STM32F302xC || STM32F303xC || STM32F358xx || */ /* STM32F303x8 || STM32F334x8 || STM32F328xx */ #if defined(STM32F303xE) || defined(STM32F398xx)\ || defined(STM32F303xC) || defined(STM32F358xx) /*------------------------------ ADC3 & ADC4 clock Configuration -------------*/ if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_ADC34) == RCC_PERIPHCLK_ADC34) { /* Check the parameters */ assert_param(IS_RCC_ADC34PLLCLK_DIV(PeriphClkInit->Adc34ClockSelection)); /* Configure the ADC34 clock source */ __HAL_RCC_ADC34_CONFIG(PeriphClkInit->Adc34ClockSelection); } #endif /* STM32F303xE || STM32F398xx || */ /* STM32F303xC || STM32F358xx */ #if defined(STM32F373xC) || defined(STM32F378xx) /*------------------------------ ADC1 clock Configuration ------------------*/ if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_ADC1) == RCC_PERIPHCLK_ADC1) { /* Check the parameters */ assert_param(IS_RCC_ADC1PCLK2_DIV(PeriphClkInit->Adc1ClockSelection)); /* Configure the ADC1 clock source */ __HAL_RCC_ADC1_CONFIG(PeriphClkInit->Adc1ClockSelection); } #endif /* STM32F373xC || STM32F378xx */ #if defined(STM32F302xE) || defined(STM32F303xE) || defined(STM32F398xx)\ || defined(STM32F302xC) || defined(STM32F303xC) || defined(STM32F358xx)\ || defined(STM32F303x8) || defined(STM32F334x8) || defined(STM32F328xx)\ || defined(STM32F301x8) || defined(STM32F302x8) || defined(STM32F318xx) /*------------------------------ TIM1 clock Configuration ----------------*/ if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_TIM1) == RCC_PERIPHCLK_TIM1) { /* Check the parameters */ assert_param(IS_RCC_TIM1CLKSOURCE(PeriphClkInit->Tim1ClockSelection)); /* Configure the TIM1 clock source */ __HAL_RCC_TIM1_CONFIG(PeriphClkInit->Tim1ClockSelection); } #endif /* STM32F302xE || STM32F303xE || STM32F398xx || */ /* STM32F302xC || STM32F303xC || STM32F358xx || */ /* STM32F303x8 || STM32F334x8 || STM32F328xx || */ /* STM32F301x8 || STM32F302x8 || STM32F318xx */ #if defined(STM32F303xE) || defined(STM32F398xx)\ || defined(STM32F303xC) || defined(STM32F358xx) /*------------------------------ TIM8 clock Configuration ----------------*/ if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_TIM8) == RCC_PERIPHCLK_TIM8) { /* Check the parameters */ assert_param(IS_RCC_TIM8CLKSOURCE(PeriphClkInit->Tim8ClockSelection)); /* Configure the TIM8 clock source */ __HAL_RCC_TIM8_CONFIG(PeriphClkInit->Tim8ClockSelection); } #endif /* STM32F303xE || STM32F398xx || */ /* STM32F303xC || STM32F358xx */ #if defined(STM32F301x8) || defined(STM32F302x8) || defined(STM32F318xx) /*------------------------------ TIM15 clock Configuration ----------------*/ if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_TIM15) == RCC_PERIPHCLK_TIM15) { /* Check the parameters */ assert_param(IS_RCC_TIM15CLKSOURCE(PeriphClkInit->Tim15ClockSelection)); /* Configure the TIM15 clock source */ __HAL_RCC_TIM15_CONFIG(PeriphClkInit->Tim15ClockSelection); } /*------------------------------ TIM16 clock Configuration ----------------*/ if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_TIM16) == RCC_PERIPHCLK_TIM16) { /* Check the parameters */ assert_param(IS_RCC_TIM16CLKSOURCE(PeriphClkInit->Tim16ClockSelection)); /* Configure the TIM16 clock source */ __HAL_RCC_TIM16_CONFIG(PeriphClkInit->Tim16ClockSelection); } /*------------------------------ TIM17 clock Configuration ----------------*/ if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_TIM17) == RCC_PERIPHCLK_TIM17) { /* Check the parameters */ assert_param(IS_RCC_TIM17CLKSOURCE(PeriphClkInit->Tim17ClockSelection)); /* Configure the TIM17 clock source */ __HAL_RCC_TIM17_CONFIG(PeriphClkInit->Tim17ClockSelection); } #endif /* STM32F301x8 || STM32F302x8 || STM32F318xx */ #if defined(STM32F334x8) /*------------------------------ HRTIM1 clock Configuration ----------------*/ if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_HRTIM1) == RCC_PERIPHCLK_HRTIM1) { /* Check the parameters */ assert_param(IS_RCC_HRTIM1CLKSOURCE(PeriphClkInit->Hrtim1ClockSelection)); /* Configure the HRTIM1 clock source */ __HAL_RCC_HRTIM1_CONFIG(PeriphClkInit->Hrtim1ClockSelection); } #endif /* STM32F334x8 */ #if defined(STM32F373xC) || defined(STM32F378xx) /*------------------------------ SDADC clock Configuration -------------------*/ if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_SDADC) == RCC_PERIPHCLK_SDADC) { /* Check the parameters */ assert_param(IS_RCC_SDADCSYSCLK_DIV(PeriphClkInit->SdadcClockSelection)); /* Configure the SDADC clock prescaler */ __HAL_RCC_SDADC_CONFIG(PeriphClkInit->SdadcClockSelection); } /*------------------------------ CEC clock 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); } #endif /* STM32F373xC || STM32F378xx */ #if defined(STM32F302xE) || defined(STM32F303xE) || defined(STM32F398xx) /*------------------------------ TIM2 clock Configuration -------------------*/ if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_TIM2) == RCC_PERIPHCLK_TIM2) { /* Check the parameters */ assert_param(IS_RCC_TIM2CLKSOURCE(PeriphClkInit->Tim2ClockSelection)); /* Configure the CEC clock source */ __HAL_RCC_TIM2_CONFIG(PeriphClkInit->Tim2ClockSelection); } /*------------------------------ TIM3 clock Configuration -------------------*/ if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_TIM34) == RCC_PERIPHCLK_TIM34) { /* Check the parameters */ assert_param(IS_RCC_TIM3CLKSOURCE(PeriphClkInit->Tim34ClockSelection)); /* Configure the CEC clock source */ __HAL_RCC_TIM34_CONFIG(PeriphClkInit->Tim34ClockSelection); } /*------------------------------ TIM15 clock Configuration ------------------*/ if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_TIM15) == RCC_PERIPHCLK_TIM15) { /* Check the parameters */ assert_param(IS_RCC_TIM15CLKSOURCE(PeriphClkInit->Tim15ClockSelection)); /* Configure the CEC clock source */ __HAL_RCC_TIM15_CONFIG(PeriphClkInit->Tim15ClockSelection); } /*------------------------------ TIM16 clock Configuration ------------------*/ if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_TIM16) == RCC_PERIPHCLK_TIM16) { /* Check the parameters */ assert_param(IS_RCC_TIM16CLKSOURCE(PeriphClkInit->Tim16ClockSelection)); /* Configure the CEC clock source */ __HAL_RCC_TIM16_CONFIG(PeriphClkInit->Tim16ClockSelection); } /*------------------------------ TIM17 clock Configuration ------------------*/ if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_TIM17) == RCC_PERIPHCLK_TIM17) { /* Check the parameters */ assert_param(IS_RCC_TIM17CLKSOURCE(PeriphClkInit->Tim17ClockSelection)); /* Configure the CEC clock source */ __HAL_RCC_TIM17_CONFIG(PeriphClkInit->Tim17ClockSelection); } #endif /* STM32F302xE || STM32F303xE || STM32F398xx */ #if defined(STM32F303xE) || defined(STM32F398xx) /*------------------------------ TIM20 clock Configuration ------------------*/ if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_TIM20) == RCC_PERIPHCLK_TIM20) { /* Check the parameters */ assert_param(IS_RCC_TIM20CLKSOURCE(PeriphClkInit->Tim20ClockSelection)); /* Configure the CEC clock source */ __HAL_RCC_TIM20_CONFIG(PeriphClkInit->Tim20ClockSelection); } #endif /* STM32F303xE || STM32F398xx */ return HAL_OK; } /** * @brief Get the RCC_ClkInitStruct according to the internal * RCC configuration registers. * @param PeriphClkInit pointer to an RCC_PeriphCLKInitTypeDef structure that * returns the configuration information for the Extended Peripherals clocks * (ADC, CEC, I2C, I2S, SDADC, HRTIM, TIM, USART, RTC and USB clocks). * @retval None */ void HAL_RCCEx_GetPeriphCLKConfig(RCC_PeriphCLKInitTypeDef *PeriphClkInit) { /* Set all possible values for the extended clock type parameter------------*/ /* Common part first */ #if defined(RCC_CFGR3_USART2SW) && defined(RCC_CFGR3_USART3SW) PeriphClkInit->PeriphClockSelection = RCC_PERIPHCLK_USART1 | RCC_PERIPHCLK_USART2 | RCC_PERIPHCLK_USART3 | \ RCC_PERIPHCLK_I2C1 | RCC_PERIPHCLK_RTC; #else PeriphClkInit->PeriphClockSelection = RCC_PERIPHCLK_USART1 | \ RCC_PERIPHCLK_I2C1 | RCC_PERIPHCLK_RTC; #endif /* RCC_CFGR3_USART2SW && RCC_CFGR3_USART3SW */ /* Get the RTC configuration --------------------------------------------*/ PeriphClkInit->RTCClockSelection = __HAL_RCC_GET_RTC_SOURCE(); /* Get the USART1 clock configuration --------------------------------------------*/ PeriphClkInit->Usart1ClockSelection = __HAL_RCC_GET_USART1_SOURCE(); #if defined(RCC_CFGR3_USART2SW) /* Get the USART2 clock configuration -----------------------------------------*/ PeriphClkInit->Usart2ClockSelection = __HAL_RCC_GET_USART2_SOURCE(); #endif /* RCC_CFGR3_USART2SW */ #if defined(RCC_CFGR3_USART3SW) /* Get the USART3 clock configuration -----------------------------------------*/ PeriphClkInit->Usart3ClockSelection = __HAL_RCC_GET_USART3_SOURCE(); #endif /* RCC_CFGR3_USART3SW */ /* Get the I2C1 clock configuration -----------------------------------------*/ PeriphClkInit->I2c1ClockSelection = __HAL_RCC_GET_I2C1_SOURCE(); #if defined(STM32F302xE) || defined(STM32F303xE)\ || defined(STM32F302xC) || defined(STM32F303xC)\ || defined(STM32F302x8) \ || defined(STM32F373xC) PeriphClkInit->PeriphClockSelection |= RCC_PERIPHCLK_USB; /* Get the USB clock configuration -----------------------------------------*/ PeriphClkInit->USBClockSelection = __HAL_RCC_GET_USB_SOURCE(); #endif /* STM32F302xE || STM32F303xE || */ /* STM32F302xC || STM32F303xC || */ /* STM32F302x8 || */ /* STM32F373xC */ #if defined(STM32F302xE) || defined(STM32F303xE) || defined(STM32F398xx)\ || defined(STM32F302xC) || defined(STM32F303xC) || defined(STM32F358xx)\ || defined(STM32F301x8) || defined(STM32F302x8) || defined(STM32F318xx)\ || defined(STM32F373xC) || defined(STM32F378xx) PeriphClkInit->PeriphClockSelection |= RCC_PERIPHCLK_I2C2; /* Get the I2C2 clock configuration -----------------------------------------*/ PeriphClkInit->I2c2ClockSelection = __HAL_RCC_GET_I2C2_SOURCE(); #endif /* STM32F302xE || STM32F303xE || STM32F398xx || */ /* STM32F302xC || STM32F303xC || STM32F358xx || */ /* STM32F301x8 || STM32F302x8 || STM32F318xx || */ /* STM32F373xC || STM32F378xx */ #if defined(STM32F302xE) || defined(STM32F303xE) || defined(STM32F398xx)\ || defined(STM32F301x8) || defined(STM32F302x8) || defined(STM32F318xx) PeriphClkInit->PeriphClockSelection |= RCC_PERIPHCLK_I2C3; /* Get the I2C3 clock configuration -----------------------------------------*/ PeriphClkInit->I2c3ClockSelection = __HAL_RCC_GET_I2C3_SOURCE(); #endif /* STM32F302xE || STM32F303xE || STM32F398xx || */ /* STM32F301x8 || STM32F302x8 || STM32F318xx */ #if defined(STM32F302xE) || defined(STM32F303xE) || defined(STM32F398xx)\ || defined(STM32F302xC) || defined(STM32F303xC) ||defined(STM32F358xx) PeriphClkInit->PeriphClockSelection |= (RCC_PERIPHCLK_UART4 | RCC_PERIPHCLK_UART5); /* Get the UART4 clock configuration -----------------------------------------*/ PeriphClkInit->Uart4ClockSelection = __HAL_RCC_GET_UART4_SOURCE(); /* Get the UART5 clock configuration -----------------------------------------*/ PeriphClkInit->Uart5ClockSelection = __HAL_RCC_GET_UART5_SOURCE(); #endif /* STM32F302xE || STM32F303xE || STM32F398xx || */ /* STM32F302xC || STM32F303xC || STM32F358xx */ #if defined(STM32F302xE) || defined(STM32F303xE) || defined(STM32F398xx)\ || defined(STM32F302xC) || defined(STM32F303xC) || defined(STM32F358xx)\ || defined(STM32F301x8) || defined(STM32F302x8) || defined(STM32F318xx) PeriphClkInit->PeriphClockSelection |= RCC_PERIPHCLK_I2S; /* Get the I2S clock configuration -----------------------------------------*/ PeriphClkInit->I2sClockSelection = __HAL_RCC_GET_I2S_SOURCE(); #endif /* STM32F302xE || STM32F303xE || STM32F398xx || */ /* STM32F302xC || STM32F303xC || STM32F358xx || */ /* STM32F301x8 || STM32F302x8 || STM32F318xx || */ #if defined(STM32F301x8) || defined(STM32F302x8) || defined(STM32F318xx)\ || defined(STM32F373xC) || defined(STM32F378xx) PeriphClkInit->PeriphClockSelection |= RCC_PERIPHCLK_ADC1; /* Get the ADC1 clock configuration -----------------------------------------*/ PeriphClkInit->Adc1ClockSelection = __HAL_RCC_GET_ADC1_SOURCE(); #endif /* STM32F301x8 || STM32F302x8 || STM32F318xx || */ /* STM32F373xC || STM32F378xx */ #if defined(STM32F302xE) || defined(STM32F303xE) || defined(STM32F398xx)\ || defined(STM32F302xC) || defined(STM32F303xC) || defined(STM32F358xx)\ || defined(STM32F303x8) || defined(STM32F334x8) || defined(STM32F328xx) PeriphClkInit->PeriphClockSelection |= RCC_PERIPHCLK_ADC12; /* Get the ADC1 & ADC2 clock configuration -----------------------------------------*/ PeriphClkInit->Adc12ClockSelection = __HAL_RCC_GET_ADC12_SOURCE(); #endif /* STM32F302xE || STM32F303xE || STM32F398xx || */ /* STM32F302xC || STM32F303xC || STM32F358xx || */ /* STM32F303x8 || STM32F334x8 || STM32F328xx */ #if defined(STM32F303xE) || defined(STM32F398xx)\ || defined(STM32F303xC) || defined(STM32F358xx) PeriphClkInit->PeriphClockSelection |= RCC_PERIPHCLK_ADC34; /* Get the ADC3 & ADC4 clock configuration -----------------------------------------*/ PeriphClkInit->Adc34ClockSelection = __HAL_RCC_GET_ADC34_SOURCE(); #endif /* STM32F303xE || STM32F398xx || */ /* STM32F303xC || STM32F358xx */ #if defined(STM32F302xE) || defined(STM32F303xE) || defined(STM32F398xx)\ || defined(STM32F302xC) || defined(STM32F303xC) || defined(STM32F358xx)\ || defined(STM32F303x8) || defined(STM32F334x8) || defined(STM32F328xx)\ || defined(STM32F301x8) || defined(STM32F302x8) || defined(STM32F318xx) PeriphClkInit->PeriphClockSelection |= RCC_PERIPHCLK_TIM1; /* Get the TIM1 clock configuration -----------------------------------------*/ PeriphClkInit->Tim1ClockSelection = __HAL_RCC_GET_TIM1_SOURCE(); #endif /* STM32F302xE || STM32F303xE || STM32F398xx || */ /* STM32F302xC || STM32F303xC || STM32F358xx || */ /* STM32F303x8 || STM32F334x8 || STM32F328xx || */ /* STM32F301x8 || STM32F302x8 || STM32F318xx */ #if defined(STM32F303xE) || defined(STM32F398xx)\ || defined(STM32F303xC) || defined(STM32F358xx) PeriphClkInit->PeriphClockSelection |= RCC_PERIPHCLK_TIM8; /* Get the TIM8 clock configuration -----------------------------------------*/ PeriphClkInit->Tim8ClockSelection = __HAL_RCC_GET_TIM8_SOURCE(); #endif /* STM32F303xE || STM32F398xx || */ /* STM32F303xC || STM32F358xx */ #if defined(STM32F301x8) || defined(STM32F302x8) || defined(STM32F318xx) PeriphClkInit->PeriphClockSelection |= (RCC_PERIPHCLK_TIM15 | RCC_PERIPHCLK_TIM16 | RCC_PERIPHCLK_TIM17); /* Get the TIM15 clock configuration -----------------------------------------*/ PeriphClkInit->Tim15ClockSelection = __HAL_RCC_GET_TIM15_SOURCE(); /* Get the TIM16 clock configuration -----------------------------------------*/ PeriphClkInit->Tim16ClockSelection = __HAL_RCC_GET_TIM16_SOURCE(); /* Get the TIM17 clock configuration -----------------------------------------*/ PeriphClkInit->Tim17ClockSelection = __HAL_RCC_GET_TIM17_SOURCE(); #endif /* STM32F301x8 || STM32F302x8 || STM32F318xx */ #if defined(STM32F334x8) PeriphClkInit->PeriphClockSelection |= RCC_PERIPHCLK_HRTIM1; /* Get the HRTIM1 clock configuration -----------------------------------------*/ PeriphClkInit->Hrtim1ClockSelection = __HAL_RCC_GET_HRTIM1_SOURCE(); #endif /* STM32F334x8 */ #if defined(STM32F373xC) || defined(STM32F378xx) PeriphClkInit->PeriphClockSelection |= RCC_PERIPHCLK_SDADC; /* Get the SDADC clock configuration -----------------------------------------*/ PeriphClkInit->SdadcClockSelection = __HAL_RCC_GET_SDADC_SOURCE(); PeriphClkInit->PeriphClockSelection |= RCC_PERIPHCLK_CEC; /* Get the CEC clock configuration -----------------------------------------*/ PeriphClkInit->CecClockSelection = __HAL_RCC_GET_CEC_SOURCE(); #endif /* STM32F373xC || STM32F378xx */ #if defined(STM32F302xE) || defined(STM32F303xE) || defined(STM32F398xx) PeriphClkInit->PeriphClockSelection |= RCC_PERIPHCLK_TIM2; /* Get the TIM2 clock configuration -----------------------------------------*/ PeriphClkInit->Tim2ClockSelection = __HAL_RCC_GET_TIM2_SOURCE(); PeriphClkInit->PeriphClockSelection |= RCC_PERIPHCLK_TIM34; /* Get the TIM3 clock configuration -----------------------------------------*/ PeriphClkInit->Tim34ClockSelection = __HAL_RCC_GET_TIM34_SOURCE(); PeriphClkInit->PeriphClockSelection |= RCC_PERIPHCLK_TIM15; /* Get the TIM15 clock configuration -----------------------------------------*/ PeriphClkInit->Tim15ClockSelection = __HAL_RCC_GET_TIM15_SOURCE(); PeriphClkInit->PeriphClockSelection |= RCC_PERIPHCLK_TIM16; /* Get the TIM16 clock configuration -----------------------------------------*/ PeriphClkInit->Tim16ClockSelection = __HAL_RCC_GET_TIM16_SOURCE(); PeriphClkInit->PeriphClockSelection |= RCC_PERIPHCLK_TIM17; /* Get the TIM17 clock configuration -----------------------------------------*/ PeriphClkInit->Tim17ClockSelection = __HAL_RCC_GET_TIM17_SOURCE(); #endif /* STM32F302xE || STM32F303xE || STM32F398xx */ #if defined (STM32F303xE) || defined(STM32F398xx) PeriphClkInit->PeriphClockSelection |= RCC_PERIPHCLK_TIM20; /* Get the TIM20 clock configuration -----------------------------------------*/ PeriphClkInit->Tim20ClockSelection = __HAL_RCC_GET_TIM20_SOURCE(); #endif /* STM32F303xE || STM32F398xx */ } /** * @brief Returns the peripheral clock frequency * @note Returns 0 if peripheral clock is unknown or 0xDEADDEAD if not applicable. * @param PeriphClk Peripheral clock identifier * This parameter can be one of the following values: * @arg @ref RCC_PERIPHCLK_RTC RTC peripheral clock * @arg @ref RCC_PERIPHCLK_USART1 USART1 peripheral clock * @arg @ref RCC_PERIPHCLK_I2C1 I2C1 peripheral clock @if STM32F301x8 * @arg @ref RCC_PERIPHCLK_I2C2 I2C2 peripheral clock * @arg @ref RCC_PERIPHCLK_I2C3 I2C3 peripheral clock * @arg @ref RCC_PERIPHCLK_I2S I2S peripheral clock * @arg @ref RCC_PERIPHCLK_ADC1 ADC1 peripheral clock * @arg @ref RCC_PERIPHCLK_TIM1 TIM1 peripheral clock * @arg @ref RCC_PERIPHCLK_TIM15 TIM15 peripheral clock * @arg @ref RCC_PERIPHCLK_TIM16 TIM16 peripheral clock * @arg @ref RCC_PERIPHCLK_TIM17 TIM17 peripheral clock @endif @if STM32F302x8 * @arg @ref RCC_PERIPHCLK_I2C2 I2C2 peripheral clock * @arg @ref RCC_PERIPHCLK_I2C3 I2C3 peripheral clock * @arg @ref RCC_PERIPHCLK_I2S I2S peripheral clock * @arg @ref RCC_PERIPHCLK_USB USB peripheral clock * @arg @ref RCC_PERIPHCLK_ADC1 ADC1 peripheral clock * @arg @ref RCC_PERIPHCLK_TIM1 TIM1 peripheral clock * @arg @ref RCC_PERIPHCLK_TIM15 TIM15 peripheral clock * @arg @ref RCC_PERIPHCLK_TIM16 TIM16 peripheral clock * @arg @ref RCC_PERIPHCLK_TIM17 TIM17 peripheral clock @endif @if STM32F302xC * @arg @ref RCC_PERIPHCLK_USART2 USART2 peripheral clock * @arg @ref RCC_PERIPHCLK_USART3 USART3 peripheral clock * @arg @ref RCC_PERIPHCLK_UART4 UART4 peripheral clock * @arg @ref RCC_PERIPHCLK_UART5 UART5 peripheral clock * @arg @ref RCC_PERIPHCLK_I2C2 I2C2 peripheral clock * @arg @ref RCC_PERIPHCLK_I2S I2S peripheral clock * @arg @ref RCC_PERIPHCLK_USB USB peripheral clock * @arg @ref RCC_PERIPHCLK_ADC12 ADC12 peripheral clock * @arg @ref RCC_PERIPHCLK_TIM1 TIM1 peripheral clock @endif @if STM32F302xE * @arg @ref RCC_PERIPHCLK_USART2 USART2 peripheral clock * @arg @ref RCC_PERIPHCLK_USART3 USART3 peripheral clock * @arg @ref RCC_PERIPHCLK_UART4 UART4 peripheral clock * @arg @ref RCC_PERIPHCLK_UART5 UART5 peripheral clock * @arg @ref RCC_PERIPHCLK_I2C2 I2C2 peripheral clock * @arg @ref RCC_PERIPHCLK_I2C3 I2C3 peripheral clock * @arg @ref RCC_PERIPHCLK_I2S I2S peripheral clock * @arg @ref RCC_PERIPHCLK_USB USB peripheral clock * @arg @ref RCC_PERIPHCLK_ADC12 ADC12 peripheral clock * @arg @ref RCC_PERIPHCLK_TIM1 TIM1 peripheral clock * @arg @ref RCC_PERIPHCLK_TIM2 TIM2 peripheral clock * @arg @ref RCC_PERIPHCLK_TIM15 TIM15 peripheral clock * @arg @ref RCC_PERIPHCLK_TIM16 TIM16 peripheral clock * @arg @ref RCC_PERIPHCLK_TIM17 TIM17 peripheral clock * @arg @ref RCC_PERIPHCLK_TIM34 TIM34 peripheral clock @endif @if STM32F303x8 * @arg @ref RCC_PERIPHCLK_ADC12 ADC12 peripheral clock * @arg @ref RCC_PERIPHCLK_TIM1 TIM1 peripheral clock @endif @if STM32F303xC * @arg @ref RCC_PERIPHCLK_USART2 USART2 peripheral clock * @arg @ref RCC_PERIPHCLK_USART3 USART3 peripheral clock * @arg @ref RCC_PERIPHCLK_UART4 UART4 peripheral clock * @arg @ref RCC_PERIPHCLK_UART5 UART5 peripheral clock * @arg @ref RCC_PERIPHCLK_I2C2 I2C2 peripheral clock * @arg @ref RCC_PERIPHCLK_I2S I2S peripheral clock * @arg @ref RCC_PERIPHCLK_USB USB peripheral clock * @arg @ref RCC_PERIPHCLK_ADC12 ADC12 peripheral clock * @arg @ref RCC_PERIPHCLK_ADC34 ADC34 peripheral clock * @arg @ref RCC_PERIPHCLK_TIM1 TIM1 peripheral clock * @arg @ref RCC_PERIPHCLK_TIM8 TIM8 peripheral clock @endif @if STM32F303xE * @arg @ref RCC_PERIPHCLK_USART2 USART2 peripheral clock * @arg @ref RCC_PERIPHCLK_USART3 USART3 peripheral clock * @arg @ref RCC_PERIPHCLK_UART4 UART4 peripheral clock * @arg @ref RCC_PERIPHCLK_UART5 UART5 peripheral clock * @arg @ref RCC_PERIPHCLK_I2C2 I2C2 peripheral clock * @arg @ref RCC_PERIPHCLK_I2C3 I2C3 peripheral clock * @arg @ref RCC_PERIPHCLK_I2S I2S peripheral clock * @arg @ref RCC_PERIPHCLK_USB USB peripheral clock * @arg @ref RCC_PERIPHCLK_ADC12 ADC12 peripheral clock * @arg @ref RCC_PERIPHCLK_ADC34 ADC34 peripheral clock * @arg @ref RCC_PERIPHCLK_TIM1 TIM1 peripheral clock * @arg @ref RCC_PERIPHCLK_TIM2 TIM2 peripheral clock * @arg @ref RCC_PERIPHCLK_TIM8 TIM8 peripheral clock * @arg @ref RCC_PERIPHCLK_TIM15 TIM15 peripheral clock * @arg @ref RCC_PERIPHCLK_TIM16 TIM16 peripheral clock * @arg @ref RCC_PERIPHCLK_TIM17 TIM17 peripheral clock * @arg @ref RCC_PERIPHCLK_TIM20 TIM20 peripheral clock * @arg @ref RCC_PERIPHCLK_TIM34 TIM34 peripheral clock @endif @if STM32F318xx * @arg @ref RCC_PERIPHCLK_I2C2 I2C2 peripheral clock * @arg @ref RCC_PERIPHCLK_I2C3 I2C3 peripheral clock * @arg @ref RCC_PERIPHCLK_I2S I2S peripheral clock * @arg @ref RCC_PERIPHCLK_ADC1 ADC1 peripheral clock * @arg @ref RCC_PERIPHCLK_TIM1 TIM1 peripheral clock * @arg @ref RCC_PERIPHCLK_TIM15 TIM15 peripheral clock * @arg @ref RCC_PERIPHCLK_TIM16 TIM16 peripheral clock * @arg @ref RCC_PERIPHCLK_TIM17 TIM17 peripheral clock @endif @if STM32F328xx * @arg @ref RCC_PERIPHCLK_I2C2 I2C2 peripheral clock * @arg @ref RCC_PERIPHCLK_ADC12 ADC12 peripheral clock * @arg @ref RCC_PERIPHCLK_TIM1 TIM1 peripheral clock @endif @if STM32F334x8 * @arg @ref RCC_PERIPHCLK_ADC12 ADC12 peripheral clock * @arg @ref RCC_PERIPHCLK_TIM1 TIM1 peripheral clock * @arg @ref RCC_PERIPHCLK_HRTIM1 HRTIM1 peripheral clock @endif @if STM32F358xx * @arg @ref RCC_PERIPHCLK_USART2 USART2 peripheral clock * @arg @ref RCC_PERIPHCLK_USART3 USART3 peripheral clock * @arg @ref RCC_PERIPHCLK_UART4 UART4 peripheral clock * @arg @ref RCC_PERIPHCLK_UART5 UART5 peripheral clock * @arg @ref RCC_PERIPHCLK_I2S I2S peripheral clock * @arg @ref RCC_PERIPHCLK_ADC12 ADC12 peripheral clock * @arg @ref RCC_PERIPHCLK_ADC34 ADC34 peripheral clock * @arg @ref RCC_PERIPHCLK_TIM1 TIM1 peripheral clock * @arg @ref RCC_PERIPHCLK_TIM8 TIM8 peripheral clock @endif @if STM32F373xC * @arg @ref RCC_PERIPHCLK_USART2 USART2 peripheral clock * @arg @ref RCC_PERIPHCLK_USART3 USART3 peripheral clock * @arg @ref RCC_PERIPHCLK_I2C2 I2C2 peripheral clock * @arg @ref RCC_PERIPHCLK_USB USB peripheral clock * @arg @ref RCC_PERIPHCLK_ADC1 ADC1 peripheral clock * @arg @ref RCC_PERIPHCLK_SDADC SDADC peripheral clock * @arg @ref RCC_PERIPHCLK_CEC CEC peripheral clock @endif @if STM32F378xx * @arg @ref RCC_PERIPHCLK_USART2 USART2 peripheral clock * @arg @ref RCC_PERIPHCLK_USART3 USART3 peripheral clock * @arg @ref RCC_PERIPHCLK_I2C2 I2C2 peripheral clock * @arg @ref RCC_PERIPHCLK_ADC1 ADC1 peripheral clock * @arg @ref RCC_PERIPHCLK_SDADC SDADC peripheral clock * @arg @ref RCC_PERIPHCLK_CEC CEC peripheral clock @endif @if STM32F398xx * @arg @ref RCC_PERIPHCLK_USART2 USART2 peripheral clock * @arg @ref RCC_PERIPHCLK_USART3 USART3 peripheral clock * @arg @ref RCC_PERIPHCLK_UART4 UART4 peripheral clock * @arg @ref RCC_PERIPHCLK_UART5 UART5 peripheral clock * @arg @ref RCC_PERIPHCLK_I2C2 I2C2 peripheral clock * @arg @ref RCC_PERIPHCLK_I2C3 I2C3 peripheral clock * @arg @ref RCC_PERIPHCLK_I2S I2S peripheral clock * @arg @ref RCC_PERIPHCLK_ADC12 ADC12 peripheral clock * @arg @ref RCC_PERIPHCLK_ADC34 ADC34 peripheral clock * @arg @ref RCC_PERIPHCLK_TIM1 TIM1 peripheral clock * @arg @ref RCC_PERIPHCLK_TIM2 TIM2 peripheral clock * @arg @ref RCC_PERIPHCLK_TIM8 TIM8 peripheral clock * @arg @ref RCC_PERIPHCLK_TIM15 TIM15 peripheral clock * @arg @ref RCC_PERIPHCLK_TIM16 TIM16 peripheral clock * @arg @ref RCC_PERIPHCLK_TIM17 TIM17 peripheral clock * @arg @ref RCC_PERIPHCLK_TIM20 TIM20 peripheral clock * @arg @ref RCC_PERIPHCLK_TIM34 TIM34 peripheral clock @endif * @retval Frequency in Hz (0: means that no available frequency for the peripheral) */ uint32_t HAL_RCCEx_GetPeriphCLKFreq(uint32_t PeriphClk) { /* frequency == 0 : means that no available frequency for the peripheral */ uint32_t frequency = 0U; uint32_t srcclk = 0U; #if defined(RCC_CFGR2_ADC1PRES) || defined(RCC_CFGR2_ADCPRE12) || defined(RCC_CFGR2_ADCPRE34) uint16_t adc_pll_prediv_table[16] = { 1U, 2U, 4U, 6U, 8U, 10U, 12U, 16U, 32U, 64U, 128U, 256U, 256U, 256U, 256U, 256U}; #endif /* RCC_CFGR2_ADC1PRES || RCC_CFGR2_ADCPRE12 || RCC_CFGR2_ADCPRE34 */ #if defined(RCC_CFGR_SDPRE) uint8_t sdadc_prescaler_table[16] = { 2U, 4U, 6U, 8U, 10U, 12U, 14U, 16U, 20U, 24U, 28U, 32U, 36U, 40U, 44U, 48U}; #endif /* RCC_CFGR_SDPRE */ /* Check the parameters */ assert_param(IS_RCC_PERIPHCLOCK(PeriphClk)); switch (PeriphClk) { case RCC_PERIPHCLK_RTC: { /* Get the current RTC source */ srcclk = __HAL_RCC_GET_RTC_SOURCE(); /* Check if LSE is ready and if RTC clock selection is LSE */ if ((srcclk == RCC_RTCCLKSOURCE_LSE) && (HAL_IS_BIT_SET(RCC->BDCR, RCC_BDCR_LSERDY))) { frequency = LSE_VALUE; } /* Check if LSI is ready and if RTC clock selection is LSI */ else if ((srcclk == RCC_RTCCLKSOURCE_LSI) && (HAL_IS_BIT_SET(RCC->CSR, RCC_CSR_LSIRDY))) { frequency = LSI_VALUE; } /* Check if HSE is ready and if RTC clock selection is HSI_DIV32*/ else if ((srcclk == RCC_RTCCLKSOURCE_HSE_DIV32) && (HAL_IS_BIT_SET(RCC->CR, RCC_CR_HSERDY))) { frequency = HSE_VALUE / 32U; } break; } case RCC_PERIPHCLK_USART1: { /* Get the current USART1 source */ srcclk = __HAL_RCC_GET_USART1_SOURCE(); /* Check if USART1 clock selection is PCLK1 */ #if defined(RCC_USART1CLKSOURCE_PCLK2) if (srcclk == RCC_USART1CLKSOURCE_PCLK2) { frequency = HAL_RCC_GetPCLK2Freq(); } #else if (srcclk == RCC_USART1CLKSOURCE_PCLK1) { frequency = HAL_RCC_GetPCLK1Freq(); } #endif /* RCC_USART1CLKSOURCE_PCLK2 */ /* Check if HSI is ready and if USART1 clock selection is HSI */ else if ((srcclk == RCC_USART1CLKSOURCE_HSI) && (HAL_IS_BIT_SET(RCC->CR, RCC_CR_HSIRDY))) { frequency = HSI_VALUE; } /* Check if USART1 clock selection is SYSCLK */ else if (srcclk == RCC_USART1CLKSOURCE_SYSCLK) { frequency = HAL_RCC_GetSysClockFreq(); } /* Check if LSE is ready and if USART1 clock selection is LSE */ else if ((srcclk == RCC_USART1CLKSOURCE_LSE) && (HAL_IS_BIT_SET(RCC->BDCR, RCC_BDCR_LSERDY))) { frequency = LSE_VALUE; } break; } #if defined(RCC_CFGR3_USART2SW) case RCC_PERIPHCLK_USART2: { /* Get the current USART2 source */ srcclk = __HAL_RCC_GET_USART2_SOURCE(); /* Check if USART2 clock selection is PCLK1 */ if (srcclk == RCC_USART2CLKSOURCE_PCLK1) { frequency = HAL_RCC_GetPCLK1Freq(); } /* Check if HSI is ready and if USART2 clock selection is HSI */ else if ((srcclk == RCC_USART2CLKSOURCE_HSI) && (HAL_IS_BIT_SET(RCC->CR, RCC_CR_HSIRDY))) { frequency = HSI_VALUE; } /* Check if USART2 clock selection is SYSCLK */ else if (srcclk == RCC_USART2CLKSOURCE_SYSCLK) { frequency = HAL_RCC_GetSysClockFreq(); } /* Check if LSE is ready and if USART2 clock selection is LSE */ else if ((srcclk == RCC_USART2CLKSOURCE_LSE) && (HAL_IS_BIT_SET(RCC->BDCR, RCC_BDCR_LSERDY))) { frequency = LSE_VALUE; } break; } #endif /* RCC_CFGR3_USART2SW */ #if defined(RCC_CFGR3_USART3SW) case RCC_PERIPHCLK_USART3: { /* Get the current USART3 source */ srcclk = __HAL_RCC_GET_USART3_SOURCE(); /* Check if USART3 clock selection is PCLK1 */ if (srcclk == RCC_USART3CLKSOURCE_PCLK1) { frequency = HAL_RCC_GetPCLK1Freq(); } /* Check if HSI is ready and if USART3 clock selection is HSI */ else if ((srcclk == RCC_USART3CLKSOURCE_HSI) && (HAL_IS_BIT_SET(RCC->CR, RCC_CR_HSIRDY))) { frequency = HSI_VALUE; } /* Check if USART3 clock selection is SYSCLK */ else if (srcclk == RCC_USART3CLKSOURCE_SYSCLK) { frequency = HAL_RCC_GetSysClockFreq(); } /* Check if LSE is ready and if USART3 clock selection is LSE */ else if ((srcclk == RCC_USART3CLKSOURCE_LSE) && (HAL_IS_BIT_SET(RCC->BDCR, RCC_BDCR_LSERDY))) { frequency = LSE_VALUE; } break; } #endif /* RCC_CFGR3_USART3SW */ #if defined(RCC_CFGR3_UART4SW) case RCC_PERIPHCLK_UART4: { /* Get the current UART4 source */ srcclk = __HAL_RCC_GET_UART4_SOURCE(); /* Check if UART4 clock selection is PCLK1 */ if (srcclk == RCC_UART4CLKSOURCE_PCLK1) { frequency = HAL_RCC_GetPCLK1Freq(); } /* Check if HSI is ready and if UART4 clock selection is HSI */ else if ((srcclk == RCC_UART4CLKSOURCE_HSI) && (HAL_IS_BIT_SET(RCC->CR, RCC_CR_HSIRDY))) { frequency = HSI_VALUE; } /* Check if UART4 clock selection is SYSCLK */ else if (srcclk == RCC_UART4CLKSOURCE_SYSCLK) { frequency = HAL_RCC_GetSysClockFreq(); } /* Check if LSE is ready and if UART4 clock selection is LSE */ else if ((srcclk == RCC_UART4CLKSOURCE_LSE) && (HAL_IS_BIT_SET(RCC->BDCR, RCC_BDCR_LSERDY))) { frequency = LSE_VALUE; } break; } #endif /* RCC_CFGR3_UART4SW */ #if defined(RCC_CFGR3_UART5SW) case RCC_PERIPHCLK_UART5: { /* Get the current UART5 source */ srcclk = __HAL_RCC_GET_UART5_SOURCE(); /* Check if UART5 clock selection is PCLK1 */ if (srcclk == RCC_UART5CLKSOURCE_PCLK1) { frequency = HAL_RCC_GetPCLK1Freq(); } /* Check if HSI is ready and if UART5 clock selection is HSI */ else if ((srcclk == RCC_UART5CLKSOURCE_HSI) && (HAL_IS_BIT_SET(RCC->CR, RCC_CR_HSIRDY))) { frequency = HSI_VALUE; } /* Check if UART5 clock selection is SYSCLK */ else if (srcclk == RCC_UART5CLKSOURCE_SYSCLK) { frequency = HAL_RCC_GetSysClockFreq(); } /* Check if LSE is ready and if UART5 clock selection is LSE */ else if ((srcclk == RCC_UART5CLKSOURCE_LSE) && (HAL_IS_BIT_SET(RCC->BDCR, RCC_BDCR_LSERDY))) { frequency = LSE_VALUE; } break; } #endif /* RCC_CFGR3_UART5SW */ case RCC_PERIPHCLK_I2C1: { /* Get the current I2C1 source */ srcclk = __HAL_RCC_GET_I2C1_SOURCE(); /* Check if HSI is ready and if I2C1 clock selection is HSI */ if ((srcclk == RCC_I2C1CLKSOURCE_HSI) && (HAL_IS_BIT_SET(RCC->CR, RCC_CR_HSIRDY))) { frequency = HSI_VALUE; } /* Check if I2C1 clock selection is SYSCLK */ else if (srcclk == RCC_I2C1CLKSOURCE_SYSCLK) { frequency = HAL_RCC_GetSysClockFreq(); } break; } #if defined(RCC_CFGR3_I2C2SW) case RCC_PERIPHCLK_I2C2: { /* Get the current I2C2 source */ srcclk = __HAL_RCC_GET_I2C2_SOURCE(); /* Check if HSI is ready and if I2C2 clock selection is HSI */ if ((srcclk == RCC_I2C2CLKSOURCE_HSI) && (HAL_IS_BIT_SET(RCC->CR, RCC_CR_HSIRDY))) { frequency = HSI_VALUE; } /* Check if I2C2 clock selection is SYSCLK */ else if (srcclk == RCC_I2C2CLKSOURCE_SYSCLK) { frequency = HAL_RCC_GetSysClockFreq(); } break; } #endif /* RCC_CFGR3_I2C2SW */ #if defined(RCC_CFGR3_I2C3SW) case RCC_PERIPHCLK_I2C3: { /* Get the current I2C3 source */ srcclk = __HAL_RCC_GET_I2C3_SOURCE(); /* Check if HSI is ready and if I2C3 clock selection is HSI */ if ((srcclk == RCC_I2C3CLKSOURCE_HSI) && (HAL_IS_BIT_SET(RCC->CR, RCC_CR_HSIRDY))) { frequency = HSI_VALUE; } /* Check if I2C3 clock selection is SYSCLK */ else if (srcclk == RCC_I2C3CLKSOURCE_SYSCLK) { frequency = HAL_RCC_GetSysClockFreq(); } break; } #endif /* RCC_CFGR3_I2C3SW */ #if defined(RCC_CFGR_I2SSRC) case RCC_PERIPHCLK_I2S: { /* Get the current I2S source */ srcclk = __HAL_RCC_GET_I2S_SOURCE(); /* Check if I2S clock selection is External clock mapped on the I2S_CKIN pin */ if (srcclk == RCC_I2SCLKSOURCE_EXT) { /* External clock used. Frequency cannot be returned.*/ frequency = 0xDEADDEADU; } /* Check if I2S clock selection is SYSCLK */ else if (srcclk == RCC_I2SCLKSOURCE_SYSCLK) { frequency = HAL_RCC_GetSysClockFreq(); } break; } #endif /* RCC_CFGR_I2SSRC */ #if defined(RCC_CFGR_USBPRE) case RCC_PERIPHCLK_USB: { /* Check if PLL is ready */ if (HAL_IS_BIT_SET(RCC->CR, RCC_CR_PLLRDY)) { /* Get the current USB source */ srcclk = __HAL_RCC_GET_USB_SOURCE(); /* Check if USB clock selection is not divided */ if (srcclk == RCC_USBCLKSOURCE_PLL) { frequency = RCC_GetPLLCLKFreq(); } /* Check if USB clock selection is divided by 1.5 */ else /* RCC_USBCLKSOURCE_PLL_DIV1_5 */ { frequency = (RCC_GetPLLCLKFreq() * 3U) / 2U; } } break; } #endif /* RCC_CFGR_USBPRE */ #if defined(RCC_CFGR2_ADC1PRES) || defined(RCC_CFGR_ADCPRE) case RCC_PERIPHCLK_ADC1: { /* Get the current ADC1 source */ srcclk = __HAL_RCC_GET_ADC1_SOURCE(); #if defined(RCC_CFGR2_ADC1PRES) /* Check if ADC1 clock selection is AHB */ if (srcclk == RCC_ADC1PLLCLK_OFF) { frequency = SystemCoreClock; } /* PLL clock has been selected */ else { /* Check if PLL is ready */ if (HAL_IS_BIT_SET(RCC->CR, RCC_CR_PLLRDY)) { /* Frequency is the PLL frequency divided by ADC prescaler (1U/2U/4U/6U/8U/10U/12U/16U/32U/64U/128U/256U) */ frequency = RCC_GetPLLCLKFreq() / adc_pll_prediv_table[(srcclk >> POSITION_VAL(RCC_CFGR2_ADC1PRES)) & 0xFU]; } } #else /* RCC_CFGR_ADCPRE */ /* ADC1 is set to PLCK2 frequency divided by 2U/4U/6U/8U */ frequency = HAL_RCC_GetPCLK2Freq() / (((srcclk >> POSITION_VAL(RCC_CFGR_ADCPRE)) + 1U) * 2U); #endif /* RCC_CFGR2_ADC1PRES */ break; } #endif /* RCC_CFGR2_ADC1PRES || RCC_CFGR_ADCPRE */ #if defined(RCC_CFGR2_ADCPRE12) case RCC_PERIPHCLK_ADC12: { /* Get the current ADC12 source */ srcclk = __HAL_RCC_GET_ADC12_SOURCE(); /* Check if ADC12 clock selection is AHB */ if (srcclk == RCC_ADC12PLLCLK_OFF) { frequency = SystemCoreClock; } /* PLL clock has been selected */ else { /* Check if PLL is ready */ if (HAL_IS_BIT_SET(RCC->CR, RCC_CR_PLLRDY)) { /* Frequency is the PLL frequency divided by ADC prescaler (1U/2U/4U/6/8U/10U/12U/16U/32U/64U/128U/256U) */ frequency = RCC_GetPLLCLKFreq() / adc_pll_prediv_table[(srcclk >> POSITION_VAL(RCC_CFGR2_ADCPRE12)) & 0xF]; } } break; } #endif /* RCC_CFGR2_ADCPRE12 */ #if defined(RCC_CFGR2_ADCPRE34) case RCC_PERIPHCLK_ADC34: { /* Get the current ADC34 source */ srcclk = __HAL_RCC_GET_ADC34_SOURCE(); /* Check if ADC34 clock selection is AHB */ if (srcclk == RCC_ADC34PLLCLK_OFF) { frequency = SystemCoreClock; } /* PLL clock has been selected */ else { /* Check if PLL is ready */ if (HAL_IS_BIT_SET(RCC->CR, RCC_CR_PLLRDY)) { /* Frequency is the PLL frequency divided by ADC prescaler (1U/2U/4U/6U/8U/10U/12U/16U/32U/64U/128U/256U) */ frequency = RCC_GetPLLCLKFreq() / adc_pll_prediv_table[(srcclk >> POSITION_VAL(RCC_CFGR2_ADCPRE34)) & 0xF]; } } break; } #endif /* RCC_CFGR2_ADCPRE34 */ #if defined(RCC_CFGR3_TIM1SW) case RCC_PERIPHCLK_TIM1: { /* Get the current TIM1 source */ srcclk = __HAL_RCC_GET_TIM1_SOURCE(); /* Check if PLL is ready and if TIM1 clock selection is PLL */ if ((srcclk == RCC_TIM1CLK_PLLCLK) && (HAL_IS_BIT_SET(RCC->CR, RCC_CR_PLLRDY))) { frequency = RCC_GetPLLCLKFreq(); } /* Check if TIM1 clock selection is SYSCLK */ else if (srcclk == RCC_TIM1CLK_HCLK) { frequency = SystemCoreClock; } break; } #endif /* RCC_CFGR3_TIM1SW */ #if defined(RCC_CFGR3_TIM2SW) case RCC_PERIPHCLK_TIM2: { /* Get the current TIM2 source */ srcclk = __HAL_RCC_GET_TIM2_SOURCE(); /* Check if PLL is ready and if TIM2 clock selection is PLL */ if ((srcclk == RCC_TIM2CLK_PLLCLK) && (HAL_IS_BIT_SET(RCC->CR, RCC_CR_PLLRDY))) { frequency = RCC_GetPLLCLKFreq(); } /* Check if TIM2 clock selection is SYSCLK */ else if (srcclk == RCC_TIM2CLK_HCLK) { frequency = SystemCoreClock; } break; } #endif /* RCC_CFGR3_TIM2SW */ #if defined(RCC_CFGR3_TIM8SW) case RCC_PERIPHCLK_TIM8: { /* Get the current TIM8 source */ srcclk = __HAL_RCC_GET_TIM8_SOURCE(); /* Check if PLL is ready and if TIM8 clock selection is PLL */ if ((srcclk == RCC_TIM8CLK_PLLCLK) && (HAL_IS_BIT_SET(RCC->CR, RCC_CR_PLLRDY))) { frequency = RCC_GetPLLCLKFreq(); } /* Check if TIM8 clock selection is SYSCLK */ else if (srcclk == RCC_TIM8CLK_HCLK) { frequency = SystemCoreClock; } break; } #endif /* RCC_CFGR3_TIM8SW */ #if defined(RCC_CFGR3_TIM15SW) case RCC_PERIPHCLK_TIM15: { /* Get the current TIM15 source */ srcclk = __HAL_RCC_GET_TIM15_SOURCE(); /* Check if PLL is ready and if TIM15 clock selection is PLL */ if ((srcclk == RCC_TIM15CLK_PLLCLK) && (HAL_IS_BIT_SET(RCC->CR, RCC_CR_PLLRDY))) { frequency = RCC_GetPLLCLKFreq(); } /* Check if TIM15 clock selection is SYSCLK */ else if (srcclk == RCC_TIM15CLK_HCLK) { frequency = SystemCoreClock; } break; } #endif /* RCC_CFGR3_TIM15SW */ #if defined(RCC_CFGR3_TIM16SW) case RCC_PERIPHCLK_TIM16: { /* Get the current TIM16 source */ srcclk = __HAL_RCC_GET_TIM16_SOURCE(); /* Check if PLL is ready and if TIM16 clock selection is PLL */ if ((srcclk == RCC_TIM16CLK_PLLCLK) && (HAL_IS_BIT_SET(RCC->CR, RCC_CR_PLLRDY))) { frequency = RCC_GetPLLCLKFreq(); } /* Check if TIM16 clock selection is SYSCLK */ else if (srcclk == RCC_TIM16CLK_HCLK) { frequency = SystemCoreClock; } break; } #endif /* RCC_CFGR3_TIM16SW */ #if defined(RCC_CFGR3_TIM17SW) case RCC_PERIPHCLK_TIM17: { /* Get the current TIM17 source */ srcclk = __HAL_RCC_GET_TIM17_SOURCE(); /* Check if PLL is ready and if TIM17 clock selection is PLL */ if ((srcclk == RCC_TIM17CLK_PLLCLK) && (HAL_IS_BIT_SET(RCC->CR, RCC_CR_PLLRDY))) { frequency = RCC_GetPLLCLKFreq(); } /* Check if TIM17 clock selection is SYSCLK */ else if (srcclk == RCC_TIM17CLK_HCLK) { frequency = SystemCoreClock; } break; } #endif /* RCC_CFGR3_TIM17SW */ #if defined(RCC_CFGR3_TIM20SW) case RCC_PERIPHCLK_TIM20: { /* Get the current TIM20 source */ srcclk = __HAL_RCC_GET_TIM20_SOURCE(); /* Check if PLL is ready and if TIM20 clock selection is PLL */ if ((srcclk == RCC_TIM20CLK_PLLCLK) && (HAL_IS_BIT_SET(RCC->CR, RCC_CR_PLLRDY))) { frequency = RCC_GetPLLCLKFreq(); } /* Check if TIM20 clock selection is SYSCLK */ else if (srcclk == RCC_TIM20CLK_HCLK) { frequency = SystemCoreClock; } break; } #endif /* RCC_CFGR3_TIM20SW */ #if defined(RCC_CFGR3_TIM34SW) case RCC_PERIPHCLK_TIM34: { /* Get the current TIM34 source */ srcclk = __HAL_RCC_GET_TIM34_SOURCE(); /* Check if PLL is ready and if TIM34 clock selection is PLL */ if ((srcclk == RCC_TIM34CLK_PLLCLK) && (HAL_IS_BIT_SET(RCC->CR, RCC_CR_PLLRDY))) { frequency = RCC_GetPLLCLKFreq(); } /* Check if TIM34 clock selection is SYSCLK */ else if (srcclk == RCC_TIM34CLK_HCLK) { frequency = SystemCoreClock; } break; } #endif /* RCC_CFGR3_TIM34SW */ #if defined(RCC_CFGR3_HRTIM1SW) case RCC_PERIPHCLK_HRTIM1: { /* Get the current HRTIM1 source */ srcclk = __HAL_RCC_GET_HRTIM1_SOURCE(); /* Check if PLL is ready and if HRTIM1 clock selection is PLL */ if ((srcclk == RCC_HRTIM1CLK_PLLCLK) && (HAL_IS_BIT_SET(RCC->CR, RCC_CR_PLLRDY))) { frequency = RCC_GetPLLCLKFreq(); } /* Check if HRTIM1 clock selection is SYSCLK */ else if (srcclk == RCC_HRTIM1CLK_HCLK) { frequency = SystemCoreClock; } break; } #endif /* RCC_CFGR3_HRTIM1SW */ #if defined(RCC_CFGR_SDPRE) case RCC_PERIPHCLK_SDADC: { /* Get the current SDADC source */ srcclk = __HAL_RCC_GET_SDADC_SOURCE(); /* Frequency is the system frequency divided by SDADC prescaler (2U/4U/6U/8U/10U/12U/14U/16U/20U/24U/28U/32U/36U/40U/44U/48U) */ frequency = SystemCoreClock / sdadc_prescaler_table[(srcclk >> POSITION_VAL(RCC_CFGR_SDPRE)) & 0xF]; break; } #endif /* RCC_CFGR_SDPRE */ #if defined(RCC_CFGR3_CECSW) case RCC_PERIPHCLK_CEC: { /* Get the current CEC source */ srcclk = __HAL_RCC_GET_CEC_SOURCE(); /* Check if HSI is ready and if CEC clock selection is HSI */ if ((srcclk == RCC_CECCLKSOURCE_HSI) && (HAL_IS_BIT_SET(RCC->CR, RCC_CR_HSIRDY))) { frequency = HSI_VALUE; } /* Check if LSE is ready and if CEC clock selection is LSE */ else if ((srcclk == RCC_CECCLKSOURCE_LSE) && (HAL_IS_BIT_SET(RCC->BDCR, RCC_BDCR_LSERDY))) { frequency = LSE_VALUE; } break; } #endif /* RCC_CFGR3_CECSW */ default: { break; } } return(frequency); } /** * @} */ /** * @} */ #if defined(RCC_CFGR2_ADC1PRES) || defined(RCC_CFGR2_ADCPRE12) || defined(RCC_CFGR2_ADCPRE34) || defined(RCC_CFGR_USBPRE) \ || defined(RCC_CFGR3_TIM1SW) || defined(RCC_CFGR3_TIM2SW) || defined(RCC_CFGR3_TIM8SW) || defined(RCC_CFGR3_TIM15SW) \ || defined(RCC_CFGR3_TIM16SW) || defined(RCC_CFGR3_TIM17SW) || defined(RCC_CFGR3_TIM20SW) || defined(RCC_CFGR3_TIM34SW) \ || defined(RCC_CFGR3_HRTIM1SW) /** @addtogroup RCCEx_Private_Functions * @{ */ static uint32_t RCC_GetPLLCLKFreq(void) { uint32_t pllmul = 0U, pllsource = 0U, prediv = 0U, pllclk = 0U; pllmul = RCC->CFGR & RCC_CFGR_PLLMUL; pllmul = ( pllmul >> 18U) + 2U; pllsource = RCC->CFGR & RCC_CFGR_PLLSRC; #if defined(RCC_CFGR_PLLSRC_HSI_DIV2) if (pllsource != RCC_PLLSOURCE_HSI) { prediv = (RCC->CFGR2 & RCC_CFGR2_PREDIV) + 1U; /* HSE used as PLL clock source : PLLCLK = HSE/PREDIV * PLLMUL */ pllclk = (HSE_VALUE/prediv) * pllmul; } else { /* HSI used as PLL clock source : PLLCLK = HSI/2U * PLLMUL */ pllclk = (HSI_VALUE >> 1U) * pllmul; } #else prediv = (RCC->CFGR2 & RCC_CFGR2_PREDIV) + 1U; if (pllsource == RCC_CFGR_PLLSRC_HSE_PREDIV) { /* HSE used as PLL clock source : PLLCLK = HSE/PREDIV * PLLMUL */ pllclk = (HSE_VALUE/prediv) * pllmul; } else { /* HSI used as PLL clock source : PLLCLK = HSI/PREDIV * PLLMUL */ pllclk = (HSI_VALUE/prediv) * pllmul; } #endif /* RCC_CFGR_PLLSRC_HSI_DIV2 */ return pllclk; } /** * @} */ #endif /* RCC_CFGR2_ADC1PRES || RCC_CFGR2_ADCPRExx || RCC_CFGR3_TIMxSW || RCC_CFGR3_HRTIM1SW || RCC_CFGR_USBPRE */ /** * @} */ #endif /* HAL_RCC_MODULE_ENABLED */ /** * @} */ /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/