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Diffstat (limited to 'bsp/radio-controller-1/Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_rcc_ex.c')
| -rw-r--r-- | bsp/radio-controller-1/Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_rcc_ex.c | 870 |
1 files changed, 870 insertions, 0 deletions
diff --git a/bsp/radio-controller-1/Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_rcc_ex.c b/bsp/radio-controller-1/Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_rcc_ex.c new file mode 100644 index 0000000..7f863f5 --- /dev/null +++ b/bsp/radio-controller-1/Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_rcc_ex.c @@ -0,0 +1,870 @@ +/** + ****************************************************************************** + * @file stm32f1xx_hal_rcc_ex.c + * @author MCD Application Team + * @version V1.0.4 + * @date 29-April-2016 + * @brief Extended 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) 2016 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 "stm32f1xx_hal.h" + +/** @addtogroup STM32F1xx_HAL_Driver + * @{ + */ + +#ifdef HAL_RCC_MODULE_ENABLED + +/** @defgroup RCCEx RCCEx + * @brief RCC Extension HAL module driver. + * @{ + */ + +/* Private typedef -----------------------------------------------------------*/ +/* Private define ------------------------------------------------------------*/ +/** @defgroup RCCEx_Private_Constants RCCEx Private Constants + * @{ + */ +/** + * @} + */ + +/* Private macro -------------------------------------------------------------*/ +/** @defgroup RCCEx_Private_Macros RCCEx Private Macros + * @{ + */ +/** + * @} + */ + +/* Private variables ---------------------------------------------------------*/ +/* Private function prototypes -----------------------------------------------*/ +/* Private functions ---------------------------------------------------------*/ + +/** @defgroup RCCEx_Exported_Functions RCCEx Exported Functions + * @{ + */ + +/** @defgroup RCCEx_Exported_Functions_Group1 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(RTC clock). + * + * @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. + * + * @note In case of STM32F105xC or STM32F107xC devices, PLLI2S will be enabled if requested on + * one of 2 I2S interfaces. When PLLI2S is enabled, you need to call HAL_RCCEx_DisablePLLI2S to + * manually disable it. + * + * @retval HAL status + */ +HAL_StatusTypeDef HAL_RCCEx_PeriphCLKConfig(RCC_PeriphCLKInitTypeDef *PeriphClkInit) +{ + uint32_t tickstart = 0, temp_reg = 0; +#if defined(STM32F105xC) || defined(STM32F107xC) + uint32_t pllactive = 0; +#endif /* STM32F105xC || STM32F107xC */ + + /* Check the parameters */ + assert_param(IS_RCC_PERIPHCLOCK(PeriphClkInit->PeriphClockSelection)); + + /*------------------------------- RTC/LCD Configuration ------------------------*/ + if ((((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_RTC) == RCC_PERIPHCLK_RTC)) + { + /* check for RTC Parameters used to output RTCCLK */ + assert_param(IS_RCC_RTCCLKSOURCE(PeriphClkInit->RTCClockSelection)); + + /* Enable Power Clock*/ + __HAL_RCC_PWR_CLK_ENABLE(); + + /* Enable write access to Backup domain */ + SET_BIT(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 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 timeout */ + 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); + } + + /*------------------------------ ADC clock Configuration ------------------*/ + if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_ADC) == RCC_PERIPHCLK_ADC) + { + /* Check the parameters */ + assert_param(IS_RCC_ADCPLLCLK_DIV(PeriphClkInit->AdcClockSelection)); + + /* Configure the ADC clock source */ + __HAL_RCC_ADC_CONFIG(PeriphClkInit->AdcClockSelection); + } + +#if defined(STM32F105xC) || defined(STM32F107xC) + /*------------------------------ I2S2 Configuration ------------------------*/ + if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_I2S2) == RCC_PERIPHCLK_I2S2) + { + /* Check the parameters */ + assert_param(IS_RCC_I2S2CLKSOURCE(PeriphClkInit->I2s2ClockSelection)); + + /* Configure the I2S2 clock source */ + __HAL_RCC_I2S2_CONFIG(PeriphClkInit->I2s2ClockSelection); + } + + /*------------------------------ I2S3 Configuration ------------------------*/ + if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_I2S3) == RCC_PERIPHCLK_I2S3) + { + /* Check the parameters */ + assert_param(IS_RCC_I2S3CLKSOURCE(PeriphClkInit->I2s3ClockSelection)); + + /* Configure the I2S3 clock source */ + __HAL_RCC_I2S3_CONFIG(PeriphClkInit->I2s3ClockSelection); + } + + /*------------------------------ PLL I2S Configuration ----------------------*/ + /* Check that PLLI2S need to be enabled */ + if (HAL_IS_BIT_SET(RCC->CFGR2, RCC_CFGR2_I2S2SRC) || HAL_IS_BIT_SET(RCC->CFGR2, RCC_CFGR2_I2S3SRC)) + { + /* Update flag to indicate that PLL I2S should be active */ + pllactive = 1; + } + + /* Check if PLL I2S need to be enabled */ + if (pllactive == 1) + { + /* Enable PLL I2S only if not active */ + if (HAL_IS_BIT_CLR(RCC->CR, RCC_CR_PLL3ON)) + { + /* Check the parameters */ + assert_param(IS_RCC_PLLI2S_MUL(PeriphClkInit->PLLI2S.PLLI2SMUL)); + assert_param(IS_RCC_HSE_PREDIV2(PeriphClkInit->PLLI2S.HSEPrediv2Value)); + + /* Prediv2 can be written only when the PLL2 is disabled. */ + /* Return an error only if new value is different from the programmed value */ + if (HAL_IS_BIT_SET(RCC->CR,RCC_CR_PLL2ON) && \ + (__HAL_RCC_HSE_GET_PREDIV2() != PeriphClkInit->PLLI2S.HSEPrediv2Value)) + { + return HAL_ERROR; + } + + /* Configure the HSE prediv2 factor --------------------------------*/ + __HAL_RCC_HSE_PREDIV2_CONFIG(PeriphClkInit->PLLI2S.HSEPrediv2Value); + + /* Configure the main PLLI2S multiplication factors. */ + __HAL_RCC_PLLI2S_CONFIG(PeriphClkInit->PLLI2S.PLLI2SMUL); + + /* Enable the main PLLI2S. */ + __HAL_RCC_PLLI2S_ENABLE(); + + /* Get Start Tick*/ + tickstart = HAL_GetTick(); + + /* Wait till PLLI2S is ready */ + while(__HAL_RCC_GET_FLAG(RCC_FLAG_PLLI2SRDY) == RESET) + { + if((HAL_GetTick() - tickstart ) > PLLI2S_TIMEOUT_VALUE) + { + return HAL_TIMEOUT; + } + } + } + else + { + /* Return an error only if user wants to change the PLLI2SMUL whereas PLLI2S is active */ + if (READ_BIT(RCC->CFGR2, RCC_CFGR2_PLL3MUL) != PeriphClkInit->PLLI2S.PLLI2SMUL) + { + return HAL_ERROR; + } + } + } +#endif /* STM32F105xC || STM32F107xC */ + +#if defined(STM32F102x6) || defined(STM32F102xB) || defined(STM32F103x6)\ + || defined(STM32F103xB) || defined(STM32F103xE) || defined(STM32F103xG)\ + || defined(STM32F105xC) || defined(STM32F107xC) + /*------------------------------ USB clock Configuration ------------------*/ + if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_USB) == RCC_PERIPHCLK_USB) + { + /* Check the parameters */ + assert_param(IS_RCC_USBPLLCLK_DIV(PeriphClkInit->UsbClockSelection)); + + /* Configure the USB clock source */ + __HAL_RCC_USB_CONFIG(PeriphClkInit->UsbClockSelection); + } +#endif /* STM32F102x6 || STM32F102xB || STM32F103x6 || STM32F103xB || STM32F103xE || STM32F103xG || STM32F105xC || STM32F107xC */ + + return HAL_OK; +} + +/** + * @brief Get the PeriphClkInit 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(RTC, I2S, ADC clocks). + * @retval None + */ +void HAL_RCCEx_GetPeriphCLKConfig(RCC_PeriphCLKInitTypeDef *PeriphClkInit) +{ + uint32_t srcclk = 0; + + /* Set all possible values for the extended clock type parameter------------*/ + PeriphClkInit->PeriphClockSelection = RCC_PERIPHCLK_RTC; + + /* Get the RTC configuration -----------------------------------------------*/ + srcclk = __HAL_RCC_GET_RTC_SOURCE(); + /* Source clock is LSE or LSI*/ + PeriphClkInit->RTCClockSelection = srcclk; + + /* Get the ADC clock configuration -----------------------------------------*/ + PeriphClkInit->PeriphClockSelection |= RCC_PERIPHCLK_ADC; + PeriphClkInit->AdcClockSelection = __HAL_RCC_GET_ADC_SOURCE(); + +#if defined(STM32F105xC) || defined(STM32F107xC) + /* Get the I2S2 clock configuration -----------------------------------------*/ + PeriphClkInit->PeriphClockSelection |= RCC_PERIPHCLK_I2S2; + PeriphClkInit->I2s2ClockSelection = __HAL_RCC_GET_I2S2_SOURCE(); + + /* Get the I2S3 clock configuration -----------------------------------------*/ + PeriphClkInit->PeriphClockSelection |= RCC_PERIPHCLK_I2S3; + PeriphClkInit->I2s3ClockSelection = __HAL_RCC_GET_I2S3_SOURCE(); + +#endif /* STM32F105xC || STM32F107xC */ + +#if defined(STM32F103xE) || defined(STM32F103xG) + /* Get the I2S2 clock configuration -----------------------------------------*/ + PeriphClkInit->PeriphClockSelection |= RCC_PERIPHCLK_I2S2; + PeriphClkInit->I2s2ClockSelection = RCC_I2S2CLKSOURCE_SYSCLK; + + /* Get the I2S3 clock configuration -----------------------------------------*/ + PeriphClkInit->PeriphClockSelection |= RCC_PERIPHCLK_I2S3; + PeriphClkInit->I2s3ClockSelection = RCC_I2S3CLKSOURCE_SYSCLK; + +#endif /* STM32F103xE || STM32F103xG */ + +#if defined(STM32F102x6) || defined(STM32F102xB) || defined(STM32F103x6)\ + || defined(STM32F103xB) || defined(STM32F103xE) || defined(STM32F103xG)\ + || defined(STM32F105xC) || defined(STM32F107xC) + /* Get the USB clock configuration -----------------------------------------*/ + PeriphClkInit->PeriphClockSelection |= RCC_PERIPHCLK_USB; + PeriphClkInit->UsbClockSelection = __HAL_RCC_GET_USB_SOURCE(); +#endif /* STM32F102x6 || STM32F102xB || STM32F103x6 || STM32F103xB || STM32F103xE || STM32F103xG || STM32F105xC || STM32F107xC */ +} + +/** + * @brief Returns the peripheral clock frequency + * @note Returns 0 if peripheral clock is unknown + * @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_ADC ADC peripheral clock + @if STM32F103xE + * @arg @ref RCC_PERIPHCLK_I2S2 I2S2 peripheral clock + * @arg @ref RCC_PERIPHCLK_I2S3 I2S3 peripheral clock + * @arg @ref RCC_PERIPHCLK_I2S3 I2S3 peripheral clock + @endif + @if STM32F103xG + * @arg @ref RCC_PERIPHCLK_I2S2 I2S2 peripheral clock + * @arg @ref RCC_PERIPHCLK_I2S3 I2S3 peripheral clock + * @arg @ref RCC_PERIPHCLK_I2S3 I2S3 peripheral clock + * @arg @ref RCC_PERIPHCLK_I2S2 I2S2 peripheral clock + @endif + @if STM32F105xC + * @arg @ref RCC_PERIPHCLK_I2S2 I2S2 peripheral clock + * @arg @ref RCC_PERIPHCLK_I2S3 I2S3 peripheral clock + * @arg @ref RCC_PERIPHCLK_I2S3 I2S3 peripheral clock + * @arg @ref RCC_PERIPHCLK_I2S2 I2S2 peripheral clock + * @arg @ref RCC_PERIPHCLK_I2S3 I2S3 peripheral clock + * @arg @ref RCC_PERIPHCLK_I2S3 I2S3 peripheral clock + * @arg @ref RCC_PERIPHCLK_I2S2 I2S2 peripheral clock + * @arg @ref RCC_PERIPHCLK_USB USB peripheral clock + @endif + @if STM32F107xC + * @arg @ref RCC_PERIPHCLK_I2S2 I2S2 peripheral clock + * @arg @ref RCC_PERIPHCLK_I2S3 I2S3 peripheral clock + * @arg @ref RCC_PERIPHCLK_I2S3 I2S3 peripheral clock + * @arg @ref RCC_PERIPHCLK_I2S2 I2S2 peripheral clock + * @arg @ref RCC_PERIPHCLK_I2S3 I2S3 peripheral clock + * @arg @ref RCC_PERIPHCLK_I2S3 I2S3 peripheral clock + * @arg @ref RCC_PERIPHCLK_I2S2 I2S2 peripheral clock + * @arg @ref RCC_PERIPHCLK_USB USB peripheral clock + @endif + @if STM32F102xx + * @arg @ref RCC_PERIPHCLK_USB USB peripheral clock + @endif + @if STM32F103xx + * @arg @ref RCC_PERIPHCLK_USB USB peripheral clock + @endif + * @retval Frequency in Hz (0: means that no available frequency for the peripheral) + */ +uint32_t HAL_RCCEx_GetPeriphCLKFreq(uint32_t PeriphClk) +{ +#if defined(STM32F102x6) || defined(STM32F102xB) || defined(STM32F103x6)\ + || defined(STM32F103xB) || defined(STM32F103xE) || defined(STM32F103xG)\ + || defined(STM32F105xC) || defined(STM32F107xC) +#if defined(STM32F105xC) || defined(STM32F107xC) + const uint8_t aPLLMULFactorTable[12] = {0, 0, 4, 5, 6, 7, 8, 9, 0, 0, 0, 13}; + const uint8_t aPredivFactorTable[16] = { 1, 2, 3, 4, 5, 6, 7, 8, 9,10, 11, 12, 13, 14, 15, 16}; +#else + const uint8_t aPLLMULFactorTable[16] = { 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 16}; + const uint8_t aPredivFactorTable[2] = { 1, 2}; +#endif +#endif + uint32_t temp_reg = 0, frequency = 0; +#if defined(STM32F102x6) || defined(STM32F102xB) || defined(STM32F103x6)\ + || defined(STM32F103xB) || defined(STM32F103xE) || defined(STM32F103xG)\ + || defined(STM32F105xC) || defined(STM32F107xC) + uint32_t prediv1 = 0, pllclk = 0, pllmul = 0; +#endif /* STM32F102x6 || STM32F102xB || STM32F103x6 || STM32F103xB || STM32F103xE || STM32F103xG || STM32F105xC || STM32F107xC */ +#if defined(STM32F105xC) || defined(STM32F107xC) + uint32_t pll2mul = 0, pll3mul = 0, prediv2 = 0; +#endif /* STM32F105xC || STM32F107xC */ + + /* Check the parameters */ + assert_param(IS_RCC_PERIPHCLOCK(PeriphClk)); + + switch (PeriphClk) + { +#if defined(STM32F102x6) || defined(STM32F102xB) || defined(STM32F103x6)\ + || defined(STM32F103xB) || defined(STM32F103xE) || defined(STM32F103xG)\ + || defined(STM32F105xC) || defined(STM32F107xC) + case RCC_PERIPHCLK_USB: + { + /* Get RCC configuration ------------------------------------------------------*/ + temp_reg = RCC->CFGR; + + /* Check if PLL is enabled */ + if (HAL_IS_BIT_SET(RCC->CR,RCC_CR_PLLON)) + { + pllmul = aPLLMULFactorTable[(uint32_t)(temp_reg & RCC_CFGR_PLLMULL) >> POSITION_VAL(RCC_CFGR_PLLMULL)]; + if ((temp_reg & RCC_CFGR_PLLSRC) != RCC_PLLSOURCE_HSI_DIV2) + { +#if defined(STM32F105xC) || defined(STM32F107xC) || defined(STM32F100xB)\ + || defined(STM32F100xE) + prediv1 = aPredivFactorTable[(uint32_t)(RCC->CFGR2 & RCC_CFGR2_PREDIV1) >> POSITION_VAL(RCC_CFGR2_PREDIV1)]; +#else + prediv1 = aPredivFactorTable[(uint32_t)(RCC->CFGR & RCC_CFGR_PLLXTPRE) >> POSITION_VAL(RCC_CFGR_PLLXTPRE)]; +#endif /* STM32F105xC || STM32F107xC || STM32F100xB || STM32F100xE */ + +#if defined(STM32F105xC) || defined(STM32F107xC) + if(HAL_IS_BIT_SET(RCC->CFGR2, RCC_CFGR2_PREDIV1SRC)) + { + /* PLL2 selected as Prediv1 source */ + /* PLLCLK = PLL2CLK / PREDIV1 * PLLMUL with PLL2CLK = HSE/PREDIV2 * PLL2MUL */ + prediv2 = ((RCC->CFGR2 & RCC_CFGR2_PREDIV2) >> POSITION_VAL(RCC_CFGR2_PREDIV2)) + 1; + pll2mul = ((RCC->CFGR2 & RCC_CFGR2_PLL2MUL) >> POSITION_VAL(RCC_CFGR2_PLL2MUL)) + 2; + pllclk = (uint32_t)((((HSE_VALUE / prediv2) * pll2mul) / prediv1) * pllmul); + } + else + { + /* HSE used as PLL clock source : PLLCLK = HSE/PREDIV1 * PLLMUL */ + pllclk = (uint32_t)((HSE_VALUE / prediv1) * pllmul); + } + + /* If PLLMUL was set to 13 means that it was to cover the case PLLMUL 6.5 (avoid using float) */ + /* In this case need to divide pllclk by 2 */ + if (pllmul == aPLLMULFactorTable[(uint32_t)(RCC_CFGR_PLLMULL6_5) >> POSITION_VAL(RCC_CFGR_PLLMULL)]) + { + pllclk = pllclk / 2; + } +#else + if ((temp_reg & RCC_CFGR_PLLSRC) != RCC_PLLSOURCE_HSI_DIV2) + { + /* HSE used as PLL clock source : PLLCLK = HSE/PREDIV1 * PLLMUL */ + pllclk = (uint32_t)((HSE_VALUE / prediv1) * pllmul); + } +#endif /* STM32F105xC || STM32F107xC */ + } + else + { + /* HSI used as PLL clock source : PLLCLK = HSI/2 * PLLMUL */ + pllclk = (uint32_t)((HSI_VALUE >> 1) * pllmul); + } + + /* Calcul of the USB frequency*/ +#if defined(STM32F105xC) || defined(STM32F107xC) + /* USBCLK = PLLVCO = (2 x PLLCLK) / USB prescaler */ + if (__HAL_RCC_GET_USB_SOURCE() == RCC_USBCLKSOURCE_PLL_DIV2) + { + /* Prescaler of 2 selected for USB */ + frequency = pllclk; + } + else + { + /* Prescaler of 3 selected for USB */ + frequency = (2 * pllclk) / 3; + } +#else + /* USBCLK = PLLCLK / USB prescaler */ + if (__HAL_RCC_GET_USB_SOURCE() == RCC_USBCLKSOURCE_PLL) + { + /* No prescaler selected for USB */ + frequency = pllclk; + } + else + { + /* Prescaler of 1.5 selected for USB */ + frequency = (pllclk * 2) / 3; + } +#endif + } + break; + } +#endif /* STM32F102x6 || STM32F102xB || STM32F103x6 || STM32F103xB || STM32F103xE || STM32F103xG || STM32F105xC || STM32F107xC */ +#if defined(STM32F103xE) || defined(STM32F103xG) || defined(STM32F105xC)\ + || defined(STM32F107xC) + case RCC_PERIPHCLK_I2S2: + { +#if defined(STM32F103xE) || defined(STM32F103xG) + /* SYSCLK used as source clock for I2S2 */ + frequency = HAL_RCC_GetSysClockFreq(); +#else + if (__HAL_RCC_GET_I2S2_SOURCE() == RCC_I2S2CLKSOURCE_SYSCLK) + { + /* SYSCLK used as source clock for I2S2 */ + frequency = HAL_RCC_GetSysClockFreq(); + } + else + { + /* Check if PLLI2S is enabled */ + if (HAL_IS_BIT_SET(RCC->CR, RCC_CR_PLL3ON)) + { + /* PLLI2SVCO = 2 * PLLI2SCLK = 2 * (HSE/PREDIV2 * PLL3MUL) */ + prediv2 = ((RCC->CFGR2 & RCC_CFGR2_PREDIV2) >> POSITION_VAL(RCC_CFGR2_PREDIV2)) + 1; + pll3mul = ((RCC->CFGR2 & RCC_CFGR2_PLL3MUL) >> POSITION_VAL(RCC_CFGR2_PLL3MUL)) + 2; + frequency = (uint32_t)(2 * ((HSE_VALUE / prediv2) * pll3mul)); + } + } +#endif /* STM32F103xE || STM32F103xG */ + break; + } + case RCC_PERIPHCLK_I2S3: + { +#if defined(STM32F103xE) || defined(STM32F103xG) + /* SYSCLK used as source clock for I2S3 */ + frequency = HAL_RCC_GetSysClockFreq(); +#else + if (__HAL_RCC_GET_I2S3_SOURCE() == RCC_I2S3CLKSOURCE_SYSCLK) + { + /* SYSCLK used as source clock for I2S3 */ + frequency = HAL_RCC_GetSysClockFreq(); + } + else + { + /* Check if PLLI2S is enabled */ + if (HAL_IS_BIT_SET(RCC->CR, RCC_CR_PLL3ON)) + { + /* PLLI2SVCO = 2 * PLLI2SCLK = 2 * (HSE/PREDIV2 * PLL3MUL) */ + prediv2 = ((RCC->CFGR2 & RCC_CFGR2_PREDIV2) >> POSITION_VAL(RCC_CFGR2_PREDIV2)) + 1; + pll3mul = ((RCC->CFGR2 & RCC_CFGR2_PLL3MUL) >> POSITION_VAL(RCC_CFGR2_PLL3MUL)) + 2; + frequency = (uint32_t)(2 * ((HSE_VALUE / prediv2) * pll3mul)); + } + } +#endif /* STM32F103xE || STM32F103xG */ + break; + } +#endif /* STM32F103xE || STM32F103xG || STM32F105xC || STM32F107xC */ + case RCC_PERIPHCLK_RTC: + { + /* Get RCC BDCR configuration ------------------------------------------------------*/ + temp_reg = RCC->BDCR; + + /* Check if LSE is ready if RTC clock selection is LSE */ + if (((temp_reg & RCC_BDCR_RTCSEL) == RCC_RTCCLKSOURCE_LSE) && (HAL_IS_BIT_SET(temp_reg, RCC_BDCR_LSERDY))) + { + frequency = LSE_VALUE; + } + /* Check if LSI is ready if RTC clock selection is LSI */ + else if (((temp_reg & RCC_BDCR_RTCSEL) == RCC_RTCCLKSOURCE_LSI) && (HAL_IS_BIT_SET(RCC->CSR, RCC_CSR_LSIRDY))) + { + frequency = LSI_VALUE; + } + else if (((temp_reg & RCC_BDCR_RTCSEL) == RCC_RTCCLKSOURCE_HSE_DIV128) && (HAL_IS_BIT_SET(RCC->CR, RCC_CR_HSERDY))) + { + frequency = HSE_VALUE / 128; + } + /* Clock not enabled for RTC*/ + else + { + frequency = 0; + } + break; + } + case RCC_PERIPHCLK_ADC: + { + frequency = HAL_RCC_GetPCLK2Freq() / (((__HAL_RCC_GET_ADC_SOURCE() >> POSITION_VAL(RCC_CFGR_ADCPRE_DIV4)) + 1) * 2); + break; + } + default: + { + break; + } + } + return(frequency); +} + +/** + * @} + */ + +#if defined(STM32F105xC) || defined(STM32F107xC) +/** @defgroup RCCEx_Exported_Functions_Group2 PLLI2S Management function + * @brief PLLI2S Management functions + * +@verbatim + =============================================================================== + ##### Extended PLLI2S Management functions ##### + =============================================================================== + [..] + This subsection provides a set of functions allowing to control the PLLI2S + activation or deactivation +@endverbatim + * @{ + */ + +/** + * @brief Enable PLLI2S + * @param PLLI2SInit pointer to an RCC_PLLI2SInitTypeDef structure that + * contains the configuration information for the PLLI2S + * @note The PLLI2S configuration not modified if used by I2S2 or I2S3 Interface. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_RCCEx_EnablePLLI2S(RCC_PLLI2SInitTypeDef *PLLI2SInit) +{ + uint32_t tickstart = 0; + + /* Check that PLL I2S has not been already enabled by I2S2 or I2S3*/ + if (HAL_IS_BIT_CLR(RCC->CFGR2, RCC_CFGR2_I2S2SRC) && HAL_IS_BIT_CLR(RCC->CFGR2, RCC_CFGR2_I2S3SRC)) + { + /* Check the parameters */ + assert_param(IS_RCC_PLLI2S_MUL(PLLI2SInit->PLLI2SMUL)); + assert_param(IS_RCC_HSE_PREDIV2(PLLI2SInit->HSEPrediv2Value)); + + /* Prediv2 can be written only when the PLL2 is disabled. */ + /* Return an error only if new value is different from the programmed value */ + if (HAL_IS_BIT_SET(RCC->CR,RCC_CR_PLL2ON) && \ + (__HAL_RCC_HSE_GET_PREDIV2() != PLLI2SInit->HSEPrediv2Value)) + { + return HAL_ERROR; + } + + /* Disable the main PLLI2S. */ + __HAL_RCC_PLLI2S_DISABLE(); + + /* Get Start Tick*/ + tickstart = HAL_GetTick(); + + /* Wait till PLLI2S is ready */ + while(__HAL_RCC_GET_FLAG(RCC_FLAG_PLLI2SRDY) != RESET) + { + if((HAL_GetTick() - tickstart ) > PLLI2S_TIMEOUT_VALUE) + { + return HAL_TIMEOUT; + } + } + + /* Configure the HSE prediv2 factor --------------------------------*/ + __HAL_RCC_HSE_PREDIV2_CONFIG(PLLI2SInit->HSEPrediv2Value); + + + /* Configure the main PLLI2S multiplication factors. */ + __HAL_RCC_PLLI2S_CONFIG(PLLI2SInit->PLLI2SMUL); + + /* Enable the main PLLI2S. */ + __HAL_RCC_PLLI2S_ENABLE(); + + /* Get Start Tick*/ + tickstart = HAL_GetTick(); + + /* Wait till PLLI2S is ready */ + while(__HAL_RCC_GET_FLAG(RCC_FLAG_PLLI2SRDY) == RESET) + { + if((HAL_GetTick() - tickstart ) > PLLI2S_TIMEOUT_VALUE) + { + return HAL_TIMEOUT; + } + } + } + else + { + /* PLLI2S cannot be modified as already used by I2S2 or I2S3 */ + return HAL_ERROR; + } + + return HAL_OK; +} + +/** + * @brief Disable PLLI2S + * @note PLLI2S is not disabled if used by I2S2 or I2S3 Interface. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_RCCEx_DisablePLLI2S(void) +{ + uint32_t tickstart = 0; + + /* Disable PLL I2S as not requested by I2S2 or I2S3*/ + if (HAL_IS_BIT_CLR(RCC->CFGR2, RCC_CFGR2_I2S2SRC) && HAL_IS_BIT_CLR(RCC->CFGR2, RCC_CFGR2_I2S3SRC)) + { + /* Disable the main PLLI2S. */ + __HAL_RCC_PLLI2S_DISABLE(); + + /* Get Start Tick*/ + tickstart = HAL_GetTick(); + + /* Wait till PLLI2S is ready */ + while(__HAL_RCC_GET_FLAG(RCC_FLAG_PLLI2SRDY) != RESET) + { + if((HAL_GetTick() - tickstart ) > PLLI2S_TIMEOUT_VALUE) + { + return HAL_TIMEOUT; + } + } + } + else + { + /* PLLI2S is currently used by I2S2 or I2S3. Cannot be disabled.*/ + return HAL_ERROR; + } + + return HAL_OK; +} + +/** + * @} + */ + +/** @defgroup RCCEx_Exported_Functions_Group3 PLL2 Management function + * @brief PLL2 Management functions + * +@verbatim + =============================================================================== + ##### Extended PLL2 Management functions ##### + =============================================================================== + [..] + This subsection provides a set of functions allowing to control the PLL2 + activation or deactivation +@endverbatim + * @{ + */ + +/** + * @brief Enable PLL2 + * @param PLL2Init pointer to an RCC_PLL2InitTypeDef structure that + * contains the configuration information for the PLL2 + * @note The PLL2 configuration not modified if used indirectly as system clock. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_RCCEx_EnablePLL2(RCC_PLL2InitTypeDef *PLL2Init) +{ + uint32_t tickstart = 0; + + /* This bit can not be cleared if the PLL2 clock is used indirectly as system + clock (i.e. it is used as PLL clock entry that is used as system clock). */ + if((__HAL_RCC_GET_PLL_OSCSOURCE() == RCC_PLLSOURCE_HSE) && \ + (__HAL_RCC_GET_SYSCLK_SOURCE() == RCC_SYSCLKSOURCE_STATUS_PLLCLK) && \ + ((READ_BIT(RCC->CFGR2,RCC_CFGR2_PREDIV1SRC)) == RCC_CFGR2_PREDIV1SRC_PLL2)) + { + return HAL_ERROR; + } + else + { + /* Check the parameters */ + assert_param(IS_RCC_PLL2_MUL(PLL2Init->PLL2MUL)); + assert_param(IS_RCC_HSE_PREDIV2(PLL2Init->HSEPrediv2Value)); + + /* Prediv2 can be written only when the PLLI2S is disabled. */ + /* Return an error only if new value is different from the programmed value */ + if (HAL_IS_BIT_SET(RCC->CR,RCC_CR_PLL3ON) && \ + (__HAL_RCC_HSE_GET_PREDIV2() != PLL2Init->HSEPrediv2Value)) + { + return HAL_ERROR; + } + + /* Disable the main PLL2. */ + __HAL_RCC_PLL2_DISABLE(); + + /* Get Start Tick*/ + tickstart = HAL_GetTick(); + + /* Wait till PLL2 is disabled */ + while(__HAL_RCC_GET_FLAG(RCC_FLAG_PLL2RDY) != RESET) + { + if((HAL_GetTick() - tickstart ) > PLL2_TIMEOUT_VALUE) + { + return HAL_TIMEOUT; + } + } + + /* Configure the HSE prediv2 factor --------------------------------*/ + __HAL_RCC_HSE_PREDIV2_CONFIG(PLL2Init->HSEPrediv2Value); + + /* Configure the main PLL2 multiplication factors. */ + __HAL_RCC_PLL2_CONFIG(PLL2Init->PLL2MUL); + + /* Enable the main PLL2. */ + __HAL_RCC_PLL2_ENABLE(); + + /* Get Start Tick*/ + tickstart = HAL_GetTick(); + + /* Wait till PLL2 is ready */ + while(__HAL_RCC_GET_FLAG(RCC_FLAG_PLL2RDY) == RESET) + { + if((HAL_GetTick() - tickstart ) > PLL2_TIMEOUT_VALUE) + { + return HAL_TIMEOUT; + } + } + } + + return HAL_OK; +} + +/** + * @brief Disable PLL2 + * @note PLL2 is not disabled if used indirectly as system clock. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_RCCEx_DisablePLL2(void) +{ + uint32_t tickstart = 0; + + /* This bit can not be cleared if the PLL2 clock is used indirectly as system + clock (i.e. it is used as PLL clock entry that is used as system clock). */ + if((__HAL_RCC_GET_PLL_OSCSOURCE() == RCC_PLLSOURCE_HSE) && \ + (__HAL_RCC_GET_SYSCLK_SOURCE() == RCC_SYSCLKSOURCE_STATUS_PLLCLK) && \ + ((READ_BIT(RCC->CFGR2,RCC_CFGR2_PREDIV1SRC)) == RCC_CFGR2_PREDIV1SRC_PLL2)) + { + return HAL_ERROR; + } + else + { + /* Disable the main PLL2. */ + __HAL_RCC_PLL2_DISABLE(); + + /* Get Start Tick*/ + tickstart = HAL_GetTick(); + + /* Wait till PLL2 is disabled */ + while(__HAL_RCC_GET_FLAG(RCC_FLAG_PLL2RDY) != RESET) + { + if((HAL_GetTick() - tickstart ) > PLL2_TIMEOUT_VALUE) + { + return HAL_TIMEOUT; + } + } + } + + return HAL_OK; +} + +/** + * @} + */ +#endif /* STM32F105xC || STM32F107xC */ + +/** + * @} + */ + +/** + * @} + */ + +#endif /* HAL_RCC_MODULE_ENABLED */ + +/** + * @} + */ + +/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ + |