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1123 lines
37 KiB
C
1123 lines
37 KiB
C
/**
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******************************************************************************
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* @file stm32f3xx_ll_rcc.c
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* @author MCD Application Team
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* @version V1.3.0
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* @date 01-July-2016
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* @brief RCC LL module driver.
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******************************************************************************
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* @attention
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*
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* <h2><center>© COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. Neither the name of STMicroelectronics nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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******************************************************************************
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*/
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#if defined(USE_FULL_LL_DRIVER)
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/* Includes ------------------------------------------------------------------*/
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#include "stm32f3xx_ll_rcc.h"
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#ifdef USE_FULL_ASSERT
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#include "stm32_assert.h"
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#else
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#define assert_param(expr) ((void)0U)
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#endif /* USE_FULL_ASSERT */
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/** @addtogroup STM32F3xx_LL_Driver
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* @{
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*/
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#if defined(RCC)
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/** @defgroup RCC_LL RCC
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* @{
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*/
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/* Private types -------------------------------------------------------------*/
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/* Private variables ---------------------------------------------------------*/
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/** @addtogroup RCC_LL_Private_Variables
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* @{
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*/
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#if defined(RCC_CFGR2_ADC1PRES) || defined(RCC_CFGR2_ADCPRE12) || defined(RCC_CFGR2_ADCPRE34)
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const uint16_t aADCPrescTable[12] = {1U, 2U, 4U, 6U, 8U, 10U, 12U, 16U, 32U, 64U, 128U, 256U};
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#endif /* RCC_CFGR2_ADC1PRES || RCC_CFGR2_ADCPRE12 || RCC_CFGR2_ADCPRE34 */
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#if defined(RCC_CFGR_SDADCPRE)
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const uint8_t aSDADCPrescTable[16] = {2U, 4U, 6U, 8U, 10U, 12U, 14U, 16U, 20U, 24U, 28U, 32U, 36U, 40U, 44U, 48U};
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#endif /* RCC_CFGR_SDADCPRE */
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/**
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* @}
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*/
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/* Private constants ---------------------------------------------------------*/
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/* Private macros ------------------------------------------------------------*/
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/** @addtogroup RCC_LL_Private_Macros
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* @{
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*/
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#if defined(RCC_CFGR3_USART2SW) && defined(RCC_CFGR3_USART3SW)
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#define IS_LL_RCC_USART_CLKSOURCE(__VALUE__) (((__VALUE__) == LL_RCC_USART1_CLKSOURCE) \
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|| ((__VALUE__) == LL_RCC_USART2_CLKSOURCE) \
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|| ((__VALUE__) == LL_RCC_USART3_CLKSOURCE))
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#elif defined(RCC_CFGR3_USART2SW) && !defined(RCC_CFGR3_USART3SW)
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#define IS_LL_RCC_USART_CLKSOURCE(__VALUE__) (((__VALUE__) == LL_RCC_USART1_CLKSOURCE) \
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|| ((__VALUE__) == LL_RCC_USART2_CLKSOURCE))
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#elif defined(RCC_CFGR3_USART3SW) && !defined(RCC_CFGR3_USART2SW)
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#define IS_LL_RCC_USART_CLKSOURCE(__VALUE__) (((__VALUE__) == LL_RCC_USART1_CLKSOURCE) \
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|| ((__VALUE__) == LL_RCC_USART3_CLKSOURCE))
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#else
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#define IS_LL_RCC_USART_CLKSOURCE(__VALUE__) (((__VALUE__) == LL_RCC_USART1_CLKSOURCE))
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#endif /* RCC_CFGR3_USART2SW && RCC_CFGR3_USART3SW */
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#if defined(UART4) && defined(UART5)
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#define IS_LL_RCC_UART_CLKSOURCE(__VALUE__) (((__VALUE__) == LL_RCC_UART4_CLKSOURCE) \
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|| ((__VALUE__) == LL_RCC_UART5_CLKSOURCE))
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#elif defined(UART4)
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#define IS_LL_RCC_UART_INSTANCE(__VALUE__) ((__VALUE__) == LL_RCC_UART4_CLKSOURCE)
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#elif defined(UART5)
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#define IS_LL_RCC_UART_INSTANCE(__VALUE__) ((__VALUE__) == LL_RCC_UART5_CLKSOURCE)
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#endif /* UART4 && UART5*/
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#if defined(RCC_CFGR3_I2C2SW) && defined(RCC_CFGR3_I2C3SW)
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#define IS_LL_RCC_I2C_CLKSOURCE(__VALUE__) (((__VALUE__) == LL_RCC_I2C1_CLKSOURCE) \
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|| ((__VALUE__) == LL_RCC_I2C2_CLKSOURCE) \
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|| ((__VALUE__) == LL_RCC_I2C3_CLKSOURCE))
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#elif defined(RCC_CFGR3_I2C2SW) && !defined(RCC_CFGR3_I2C3SW)
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#define IS_LL_RCC_I2C_CLKSOURCE(__VALUE__) (((__VALUE__) == LL_RCC_I2C1_CLKSOURCE) \
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|| ((__VALUE__) == LL_RCC_I2C2_CLKSOURCE))
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#elif defined(RCC_CFGR3_I2C3SW) && !defined(RCC_CFGR3_I2C2SW)
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#define IS_LL_RCC_I2C_CLKSOURCE(__VALUE__) (((__VALUE__) == LL_RCC_I2C1_CLKSOURCE) \
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|| ((__VALUE__) == LL_RCC_I2C3_CLKSOURCE))
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#else
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#define IS_LL_RCC_I2C_CLKSOURCE(__VALUE__) ((__VALUE__) == LL_RCC_I2C1_CLKSOURCE)
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#endif /* RCC_CFGR3_I2C2SW && RCC_CFGR3_I2C3SW */
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#define IS_LL_RCC_I2S_CLKSOURCE(__VALUE__) ((__VALUE__) == LL_RCC_I2S_CLKSOURCE)
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#if defined(USB)
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#define IS_LL_RCC_USB_CLKSOURCE(__VALUE__) (((__VALUE__) == LL_RCC_USB_CLKSOURCE))
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#endif /* USB */
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#if defined(RCC_CFGR_ADCPRE)
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#define IS_LL_RCC_ADC_CLKSOURCE(__VALUE__) (((__VALUE__) == LL_RCC_ADC_CLKSOURCE))
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#else
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#if defined(RCC_CFGR2_ADC1PRES)
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#define IS_LL_RCC_ADC_CLKSOURCE(__VALUE__) (((__VALUE__) == LL_RCC_ADC1_CLKSOURCE))
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#elif defined(RCC_CFGR2_ADCPRE12) && defined(RCC_CFGR2_ADCPRE34)
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#define IS_LL_RCC_ADC_CLKSOURCE(__VALUE__) (((__VALUE__) == LL_RCC_ADC12_CLKSOURCE) \
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|| ((__VALUE__) == LL_RCC_ADC34_CLKSOURCE))
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#else /* RCC_CFGR2_ADCPRE12 */
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#define IS_LL_RCC_ADC_CLKSOURCE(__VALUE__) (((__VALUE__) == LL_RCC_ADC12_CLKSOURCE))
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#endif /* RCC_CFGR2_ADC1PRES */
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#endif /* RCC_CFGR_ADCPRE */
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#if defined(RCC_CFGR_SDADCPRE)
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#define IS_LL_RCC_SDADC_CLKSOURCE(__VALUE__) (((__VALUE__) == LL_RCC_SDADC_CLKSOURCE))
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#endif /* RCC_CFGR_SDADCPRE */
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#if defined(CEC)
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#define IS_LL_RCC_CEC_CLKSOURCE(__VALUE__) (((__VALUE__) == LL_RCC_CEC_CLKSOURCE))
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#endif /* CEC */
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#if defined(RCC_CFGR3_TIMSW)
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#if defined(RCC_CFGR3_TIM8SW) && defined(RCC_CFGR3_TIM15SW) && defined(RCC_CFGR3_TIM16SW) \
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&& defined(RCC_CFGR3_TIM17SW) && defined(RCC_CFGR3_TIM20SW) && defined(RCC_CFGR3_TIM2SW) \
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&& defined(RCC_CFGR3_TIM34SW)
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#define IS_LL_RCC_TIM_CLKSOURCE(__VALUE__) (((__VALUE__) == LL_RCC_TIM1_CLKSOURCE) \
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|| ((__VALUE__) == LL_RCC_TIM2_CLKSOURCE) \
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|| ((__VALUE__) == LL_RCC_TIM8_CLKSOURCE) \
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|| ((__VALUE__) == LL_RCC_TIM15_CLKSOURCE) \
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|| ((__VALUE__) == LL_RCC_TIM16_CLKSOURCE) \
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|| ((__VALUE__) == LL_RCC_TIM17_CLKSOURCE) \
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|| ((__VALUE__) == LL_RCC_TIM20_CLKSOURCE) \
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|| ((__VALUE__) == LL_RCC_TIM34_CLKSOURCE))
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#elif !defined(RCC_CFGR3_TIM8SW) && defined(RCC_CFGR3_TIM15SW) && defined(RCC_CFGR3_TIM16SW) \
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&& defined(RCC_CFGR3_TIM17SW) && !defined(RCC_CFGR3_TIM20SW) && defined(RCC_CFGR3_TIM2SW) \
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&& defined(RCC_CFGR3_TIM34SW)
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#define IS_LL_RCC_TIM_CLKSOURCE(__VALUE__) (((__VALUE__) == LL_RCC_TIM1_CLKSOURCE) \
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|| ((__VALUE__) == LL_RCC_TIM2_CLKSOURCE) \
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|| ((__VALUE__) == LL_RCC_TIM15_CLKSOURCE) \
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|| ((__VALUE__) == LL_RCC_TIM16_CLKSOURCE) \
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|| ((__VALUE__) == LL_RCC_TIM17_CLKSOURCE) \
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|| ((__VALUE__) == LL_RCC_TIM34_CLKSOURCE))
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#elif defined(RCC_CFGR3_TIM8SW) && !defined(RCC_CFGR3_TIM15SW) && !defined(RCC_CFGR3_TIM16SW) \
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&& !defined(RCC_CFGR3_TIM17SW) && !defined(RCC_CFGR3_TIM20SW) && !defined(RCC_CFGR3_TIM2SW) \
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&& !defined(RCC_CFGR3_TIM34SW)
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#define IS_LL_RCC_TIM_CLKSOURCE(__VALUE__) (((__VALUE__) == LL_RCC_TIM1_CLKSOURCE) \
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|| ((__VALUE__) == LL_RCC_TIM8_CLKSOURCE))
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#elif !defined(RCC_CFGR3_TIM8SW) && defined(RCC_CFGR3_TIM15SW) && defined(RCC_CFGR3_TIM16SW) \
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&& defined(RCC_CFGR3_TIM17SW) && !defined(RCC_CFGR3_TIM20SW) && !defined(RCC_CFGR3_TIM2SW) \
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&& !defined(RCC_CFGR3_TIM34SW)
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#define IS_LL_RCC_TIM_CLKSOURCE(__VALUE__) (((__VALUE__) == LL_RCC_TIM1_CLKSOURCE) \
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|| ((__VALUE__) == LL_RCC_TIM15_CLKSOURCE) \
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|| ((__VALUE__) == LL_RCC_TIM16_CLKSOURCE) \
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|| ((__VALUE__) == LL_RCC_TIM17_CLKSOURCE))
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#elif !defined(RCC_CFGR3_TIM8SW) && !defined(RCC_CFGR3_TIM15SW) && !defined(RCC_CFGR3_TIM16SW) \
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&& !defined(RCC_CFGR3_TIM17SW) && !defined(RCC_CFGR3_TIM20SW) && !defined(RCC_CFGR3_TIM2SW) \
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&& !defined(RCC_CFGR3_TIM34SW)
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#define IS_LL_RCC_TIM_CLKSOURCE(__VALUE__) (((__VALUE__) == LL_RCC_TIM1_CLKSOURCE))
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#else
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#error "Miss macro"
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#endif /* RCC_CFGR3_TIMxSW */
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#endif /* RCC_CFGR3_TIMSW */
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#if defined(HRTIM1)
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#define IS_LL_RCC_HRTIM_CLKSOURCE(__VALUE__) (((__VALUE__) == LL_RCC_HRTIM1_CLKSOURCE))
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#endif /* HRTIM1 */
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/**
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* @}
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*/
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/* Private function prototypes -----------------------------------------------*/
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/** @defgroup RCC_LL_Private_Functions RCC Private functions
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* @{
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*/
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uint32_t RCC_GetSystemClockFreq(void);
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uint32_t RCC_GetHCLKClockFreq(uint32_t SYSCLK_Frequency);
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uint32_t RCC_GetPCLK1ClockFreq(uint32_t HCLK_Frequency);
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uint32_t RCC_GetPCLK2ClockFreq(uint32_t HCLK_Frequency);
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uint32_t RCC_PLL_GetFreqDomain_SYS(void);
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/**
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* @}
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*/
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/* Exported functions --------------------------------------------------------*/
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/** @addtogroup RCC_LL_Exported_Functions
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* @{
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*/
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/** @addtogroup RCC_LL_EF_Init
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* @{
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*/
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/**
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* @brief Reset the RCC clock configuration to the default reset state.
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* @note The default reset state of the clock configuration is given below:
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* - HSI ON and used as system clock source
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* - HSE and PLL OFF
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* - AHB, APB1 and APB2 prescaler set to 1.
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* - CSS, MCO OFF
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* - All interrupts disabled
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* @note This function doesn't modify the configuration of the
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* - Peripheral clocks
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* - LSI, LSE and RTC clocks
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* @retval An ErrorStatus enumeration value:
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* - SUCCESS: RCC registers are de-initialized
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* - ERROR: not applicable
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*/
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ErrorStatus LL_RCC_DeInit(void)
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{
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uint32_t vl_mask = 0U;
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/* Set HSION bit */
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LL_RCC_HSI_Enable();
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/* Set HSITRIM bits to the reset value*/
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LL_RCC_HSI_SetCalibTrimming(0x10U);
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/* Reset SW, HPRE, PPRE and MCOSEL bits */
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vl_mask = 0xFFFFFFFFU;
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CLEAR_BIT(vl_mask, (RCC_CFGR_SW | RCC_CFGR_HPRE | RCC_CFGR_PPRE1 | RCC_CFGR_PPRE2 | RCC_CFGR_MCOSEL));
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LL_RCC_WriteReg(CFGR, vl_mask);
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/* Reset HSEON, CSSON, PLLON bits */
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vl_mask = 0xFFFFFFFFU;
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CLEAR_BIT(vl_mask, (RCC_CR_PLLON | RCC_CR_CSSON | RCC_CR_HSEON));
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LL_RCC_WriteReg(CR, vl_mask);
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/* Reset HSEBYP bit */
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LL_RCC_HSE_DisableBypass();
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/* Reset CFGR register */
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LL_RCC_WriteReg(CFGR, 0x00000000U);
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/* Reset CFGR2 register */
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LL_RCC_WriteReg(CFGR2, 0x00000000U);
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/* Reset CFGR3 register */
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LL_RCC_WriteReg(CFGR3, 0x00000000U);
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/* Clear pending flags */
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vl_mask = (LL_RCC_CIR_LSIRDYC | LL_RCC_CIR_LSERDYC | LL_RCC_CIR_HSIRDYC | LL_RCC_CIR_HSERDYC | LL_RCC_CIR_PLLRDYC | LL_RCC_CIR_CSSC);
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SET_BIT(RCC->CIR, vl_mask);
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/* Disable all interrupts */
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LL_RCC_WriteReg(CIR, 0x00000000U);
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return SUCCESS;
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}
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/**
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* @}
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*/
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/** @addtogroup RCC_LL_EF_Get_Freq
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* @brief Return the frequencies of different on chip clocks; System, AHB, APB1 and APB2 buses clocks
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* and different peripheral clocks available on the device.
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* @note If SYSCLK source is HSI, function returns values based on HSI_VALUE(**)
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* @note If SYSCLK source is HSE, function returns values based on HSE_VALUE(***)
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* @note If SYSCLK source is PLL, function returns values based on
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* HSI_VALUE(**) or HSE_VALUE(***) multiplied/divided by the PLL factors.
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* @note (**) HSI_VALUE is a defined constant but the real value may vary
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* depending on the variations in voltage and temperature.
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* @note (***) HSE_VALUE is a defined constant, user has to ensure that
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* HSE_VALUE is same as the real frequency of the crystal used.
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* Otherwise, this function may have wrong result.
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* @note The result of this function could be incorrect when using fractional
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* value for HSE crystal.
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* @note This function can be used by the user application to compute the
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* baud-rate for the communication peripherals or configure other parameters.
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* @{
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*/
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/**
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* @brief Return the frequencies of different on chip clocks; System, AHB, APB1 and APB2 buses clocks
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* @note Each time SYSCLK, HCLK, PCLK1 and/or PCLK2 clock changes, this function
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* must be called to update structure fields. Otherwise, any
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* configuration based on this function will be incorrect.
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* @param RCC_Clocks pointer to a @ref LL_RCC_ClocksTypeDef structure which will hold the clocks frequencies
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* @retval None
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*/
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void LL_RCC_GetSystemClocksFreq(LL_RCC_ClocksTypeDef *RCC_Clocks)
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{
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/* Get SYSCLK frequency */
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RCC_Clocks->SYSCLK_Frequency = RCC_GetSystemClockFreq();
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/* HCLK clock frequency */
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RCC_Clocks->HCLK_Frequency = RCC_GetHCLKClockFreq(RCC_Clocks->SYSCLK_Frequency);
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/* PCLK1 clock frequency */
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RCC_Clocks->PCLK1_Frequency = RCC_GetPCLK1ClockFreq(RCC_Clocks->HCLK_Frequency);
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/* PCLK2 clock frequency */
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RCC_Clocks->PCLK2_Frequency = RCC_GetPCLK2ClockFreq(RCC_Clocks->HCLK_Frequency);
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}
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/**
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* @brief Return USARTx clock frequency
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* @param USARTxSource This parameter can be one of the following values:
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* @arg @ref LL_RCC_USART1_CLKSOURCE
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* @arg @ref LL_RCC_USART2_CLKSOURCE (*)
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* @arg @ref LL_RCC_USART3_CLKSOURCE (*)
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*
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* (*) value not defined in all devices.
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* @retval USART clock frequency (in Hz)
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* @arg @ref LL_RCC_PERIPH_FREQUENCY_NO indicates that oscillator (HSI or LSE) is not ready
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*/
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uint32_t LL_RCC_GetUSARTClockFreq(uint32_t USARTxSource)
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{
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uint32_t usart_frequency = LL_RCC_PERIPH_FREQUENCY_NO;
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/* Check parameter */
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assert_param(IS_LL_RCC_USART_CLKSOURCE(USARTxSource));
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#if defined(RCC_CFGR3_USART1SW)
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if (USARTxSource == LL_RCC_USART1_CLKSOURCE)
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{
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/* USART1CLK clock frequency */
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switch (LL_RCC_GetUSARTClockSource(USARTxSource))
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{
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case LL_RCC_USART1_CLKSOURCE_SYSCLK: /* USART1 Clock is System Clock */
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usart_frequency = RCC_GetSystemClockFreq();
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break;
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case LL_RCC_USART1_CLKSOURCE_HSI: /* USART1 Clock is HSI Osc. */
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if (LL_RCC_HSI_IsReady())
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{
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usart_frequency = HSI_VALUE;
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}
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break;
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case LL_RCC_USART1_CLKSOURCE_LSE: /* USART1 Clock is LSE Osc. */
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if (LL_RCC_LSE_IsReady())
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{
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usart_frequency = LSE_VALUE;
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}
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break;
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#if defined(RCC_CFGR3_USART1SW_PCLK1)
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case LL_RCC_USART1_CLKSOURCE_PCLK1: /* USART1 Clock is PCLK1 */
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default:
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usart_frequency = RCC_GetPCLK1ClockFreq(RCC_GetHCLKClockFreq(RCC_GetSystemClockFreq()));
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#else
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case LL_RCC_USART1_CLKSOURCE_PCLK2: /* USART1 Clock is PCLK2 */
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default:
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usart_frequency = RCC_GetPCLK2ClockFreq(RCC_GetHCLKClockFreq(RCC_GetSystemClockFreq()));
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#endif /* RCC_CFGR3_USART1SW_PCLK1 */
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break;
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}
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}
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#endif /* RCC_CFGR3_USART1SW */
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#if defined(RCC_CFGR3_USART2SW)
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if (USARTxSource == LL_RCC_USART2_CLKSOURCE)
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{
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/* USART2CLK clock frequency */
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switch (LL_RCC_GetUSARTClockSource(USARTxSource))
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{
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case LL_RCC_USART2_CLKSOURCE_SYSCLK: /* USART2 Clock is System Clock */
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usart_frequency = RCC_GetSystemClockFreq();
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break;
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case LL_RCC_USART2_CLKSOURCE_HSI: /* USART2 Clock is HSI Osc. */
|
|
if (LL_RCC_HSI_IsReady())
|
|
{
|
|
usart_frequency = HSI_VALUE;
|
|
}
|
|
break;
|
|
|
|
case LL_RCC_USART2_CLKSOURCE_LSE: /* USART2 Clock is LSE Osc. */
|
|
if (LL_RCC_LSE_IsReady())
|
|
{
|
|
usart_frequency = LSE_VALUE;
|
|
}
|
|
break;
|
|
|
|
case LL_RCC_USART2_CLKSOURCE_PCLK1: /* USART2 Clock is PCLK1 */
|
|
default:
|
|
usart_frequency = RCC_GetPCLK1ClockFreq(RCC_GetHCLKClockFreq(RCC_GetSystemClockFreq()));
|
|
break;
|
|
}
|
|
}
|
|
#endif /* RCC_CFGR3_USART2SW */
|
|
|
|
#if defined(RCC_CFGR3_USART3SW)
|
|
if (USARTxSource == LL_RCC_USART3_CLKSOURCE)
|
|
{
|
|
/* USART3CLK clock frequency */
|
|
switch (LL_RCC_GetUSARTClockSource(USARTxSource))
|
|
{
|
|
case LL_RCC_USART3_CLKSOURCE_SYSCLK: /* USART3 Clock is System Clock */
|
|
usart_frequency = RCC_GetSystemClockFreq();
|
|
break;
|
|
|
|
case LL_RCC_USART3_CLKSOURCE_HSI: /* USART3 Clock is HSI Osc. */
|
|
if (LL_RCC_HSI_IsReady())
|
|
{
|
|
usart_frequency = HSI_VALUE;
|
|
}
|
|
break;
|
|
|
|
case LL_RCC_USART3_CLKSOURCE_LSE: /* USART3 Clock is LSE Osc. */
|
|
if (LL_RCC_LSE_IsReady())
|
|
{
|
|
usart_frequency = LSE_VALUE;
|
|
}
|
|
break;
|
|
|
|
case LL_RCC_USART3_CLKSOURCE_PCLK1: /* USART3 Clock is PCLK1 */
|
|
default:
|
|
usart_frequency = RCC_GetPCLK1ClockFreq(RCC_GetHCLKClockFreq(RCC_GetSystemClockFreq()));
|
|
break;
|
|
}
|
|
}
|
|
|
|
#endif /* RCC_CFGR3_USART3SW */
|
|
return usart_frequency;
|
|
}
|
|
|
|
#if defined(UART4) || defined(UART5)
|
|
/**
|
|
* @brief Return UARTx clock frequency
|
|
* @param UARTxSource This parameter can be one of the following values:
|
|
* @arg @ref LL_RCC_UART4_CLKSOURCE
|
|
* @arg @ref LL_RCC_UART5_CLKSOURCE
|
|
* @retval UART clock frequency (in Hz)
|
|
* @arg @ref LL_RCC_PERIPH_FREQUENCY_NO indicates that oscillator (HSI or LSE) is not ready
|
|
*/
|
|
uint32_t LL_RCC_GetUARTClockFreq(uint32_t UARTxSource)
|
|
{
|
|
uint32_t uart_frequency = LL_RCC_PERIPH_FREQUENCY_NO;
|
|
|
|
/* Check parameter */
|
|
assert_param(IS_LL_RCC_UART_CLKSOURCE(UARTxSource));
|
|
|
|
#if defined(UART4)
|
|
if (UARTxSource == LL_RCC_UART4_CLKSOURCE)
|
|
{
|
|
/* UART4CLK clock frequency */
|
|
switch (LL_RCC_GetUARTClockSource(UARTxSource))
|
|
{
|
|
case LL_RCC_UART4_CLKSOURCE_SYSCLK: /* UART4 Clock is System Clock */
|
|
uart_frequency = RCC_GetSystemClockFreq();
|
|
break;
|
|
|
|
case LL_RCC_UART4_CLKSOURCE_HSI: /* UART4 Clock is HSI Osc. */
|
|
if (LL_RCC_HSI_IsReady())
|
|
{
|
|
uart_frequency = HSI_VALUE;
|
|
}
|
|
break;
|
|
|
|
case LL_RCC_UART4_CLKSOURCE_LSE: /* UART4 Clock is LSE Osc. */
|
|
if (LL_RCC_LSE_IsReady())
|
|
{
|
|
uart_frequency = LSE_VALUE;
|
|
}
|
|
break;
|
|
|
|
case LL_RCC_UART4_CLKSOURCE_PCLK1: /* UART4 Clock is PCLK1 */
|
|
default:
|
|
uart_frequency = RCC_GetPCLK1ClockFreq(RCC_GetHCLKClockFreq(RCC_GetSystemClockFreq()));
|
|
break;
|
|
}
|
|
}
|
|
#endif /* UART4 */
|
|
|
|
#if defined(UART5)
|
|
if (UARTxSource == LL_RCC_UART5_CLKSOURCE)
|
|
{
|
|
/* UART5CLK clock frequency */
|
|
switch (LL_RCC_GetUARTClockSource(UARTxSource))
|
|
{
|
|
case LL_RCC_UART5_CLKSOURCE_SYSCLK: /* UART5 Clock is System Clock */
|
|
uart_frequency = RCC_GetSystemClockFreq();
|
|
break;
|
|
|
|
case LL_RCC_UART5_CLKSOURCE_HSI: /* UART5 Clock is HSI Osc. */
|
|
if (LL_RCC_HSI_IsReady())
|
|
{
|
|
uart_frequency = HSI_VALUE;
|
|
}
|
|
break;
|
|
|
|
case LL_RCC_UART5_CLKSOURCE_LSE: /* UART5 Clock is LSE Osc. */
|
|
if (LL_RCC_LSE_IsReady())
|
|
{
|
|
uart_frequency = LSE_VALUE;
|
|
}
|
|
break;
|
|
|
|
case LL_RCC_UART5_CLKSOURCE_PCLK1: /* UART5 Clock is PCLK1 */
|
|
default:
|
|
uart_frequency = RCC_GetPCLK1ClockFreq(RCC_GetHCLKClockFreq(RCC_GetSystemClockFreq()));
|
|
break;
|
|
}
|
|
}
|
|
#endif /* UART5 */
|
|
|
|
return uart_frequency;
|
|
}
|
|
#endif /* UART4 || UART5 */
|
|
|
|
/**
|
|
* @brief Return I2Cx clock frequency
|
|
* @param I2CxSource This parameter can be one of the following values:
|
|
* @arg @ref LL_RCC_I2C1_CLKSOURCE
|
|
* @arg @ref LL_RCC_I2C2_CLKSOURCE (*)
|
|
* @arg @ref LL_RCC_I2C3_CLKSOURCE (*)
|
|
*
|
|
* (*) value not defined in all devices
|
|
* @retval I2C clock frequency (in Hz)
|
|
* @arg @ref LL_RCC_PERIPH_FREQUENCY_NO indicates that HSI oscillator is not ready
|
|
*/
|
|
uint32_t LL_RCC_GetI2CClockFreq(uint32_t I2CxSource)
|
|
{
|
|
uint32_t i2c_frequency = LL_RCC_PERIPH_FREQUENCY_NO;
|
|
|
|
/* Check parameter */
|
|
assert_param(IS_LL_RCC_I2C_CLKSOURCE(I2CxSource));
|
|
|
|
/* I2C1 CLK clock frequency */
|
|
if (I2CxSource == LL_RCC_I2C1_CLKSOURCE)
|
|
{
|
|
switch (LL_RCC_GetI2CClockSource(I2CxSource))
|
|
{
|
|
case LL_RCC_I2C1_CLKSOURCE_SYSCLK: /* I2C1 Clock is System Clock */
|
|
i2c_frequency = RCC_GetSystemClockFreq();
|
|
break;
|
|
|
|
case LL_RCC_I2C1_CLKSOURCE_HSI: /* I2C1 Clock is HSI Osc. */
|
|
default:
|
|
if (LL_RCC_HSI_IsReady())
|
|
{
|
|
i2c_frequency = HSI_VALUE;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
#if defined(RCC_CFGR3_I2C2SW)
|
|
/* I2C2 CLK clock frequency */
|
|
if (I2CxSource == LL_RCC_I2C2_CLKSOURCE)
|
|
{
|
|
switch (LL_RCC_GetI2CClockSource(I2CxSource))
|
|
{
|
|
case LL_RCC_I2C2_CLKSOURCE_SYSCLK: /* I2C2 Clock is System Clock */
|
|
i2c_frequency = RCC_GetSystemClockFreq();
|
|
break;
|
|
|
|
case LL_RCC_I2C2_CLKSOURCE_HSI: /* I2C2 Clock is HSI Osc. */
|
|
default:
|
|
if (LL_RCC_HSI_IsReady())
|
|
{
|
|
i2c_frequency = HSI_VALUE;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
#endif /*RCC_CFGR3_I2C2SW*/
|
|
|
|
#if defined(RCC_CFGR3_I2C3SW)
|
|
/* I2C3 CLK clock frequency */
|
|
if (I2CxSource == LL_RCC_I2C3_CLKSOURCE)
|
|
{
|
|
switch (LL_RCC_GetI2CClockSource(I2CxSource))
|
|
{
|
|
case LL_RCC_I2C3_CLKSOURCE_SYSCLK: /* I2C3 Clock is System Clock */
|
|
i2c_frequency = RCC_GetSystemClockFreq();
|
|
break;
|
|
|
|
case LL_RCC_I2C3_CLKSOURCE_HSI: /* I2C3 Clock is HSI Osc. */
|
|
default:
|
|
if (LL_RCC_HSI_IsReady())
|
|
{
|
|
i2c_frequency = HSI_VALUE;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
#endif /*RCC_CFGR3_I2C3SW*/
|
|
|
|
return i2c_frequency;
|
|
}
|
|
|
|
#if defined(RCC_CFGR_I2SSRC)
|
|
/**
|
|
* @brief Return I2Sx clock frequency
|
|
* @param I2SxSource This parameter can be one of the following values:
|
|
* @arg @ref LL_RCC_I2S_CLKSOURCE
|
|
* @retval I2S clock frequency (in Hz)
|
|
* @arg @ref LL_RCC_PERIPH_FREQUENCY_NA indicates that external clock is used */
|
|
uint32_t LL_RCC_GetI2SClockFreq(uint32_t I2SxSource)
|
|
{
|
|
uint32_t i2s_frequency = LL_RCC_PERIPH_FREQUENCY_NO;
|
|
|
|
/* Check parameter */
|
|
assert_param(IS_LL_RCC_I2S_CLKSOURCE(I2SxSource));
|
|
|
|
/* I2S1CLK clock frequency */
|
|
switch (LL_RCC_GetI2SClockSource(I2SxSource))
|
|
{
|
|
case LL_RCC_I2S_CLKSOURCE_SYSCLK: /*!< System clock selected as I2S clock source */
|
|
i2s_frequency = RCC_GetSystemClockFreq();
|
|
break;
|
|
|
|
case LL_RCC_I2S_CLKSOURCE_PIN: /*!< External clock selected as I2S clock source */
|
|
default:
|
|
i2s_frequency = LL_RCC_PERIPH_FREQUENCY_NA;
|
|
break;
|
|
}
|
|
|
|
return i2s_frequency;
|
|
}
|
|
#endif /*RCC_CFGR_I2SSRC*/
|
|
|
|
#if defined(USB)
|
|
/**
|
|
* @brief Return USBx clock frequency
|
|
* @param USBxSource This parameter can be one of the following values:
|
|
* @arg @ref LL_RCC_USB_CLKSOURCE
|
|
* @retval USB clock frequency (in Hz)
|
|
* @arg @ref LL_RCC_PERIPH_FREQUENCY_NO indicates that oscillator (HSI48) or PLL is not ready
|
|
* @arg @ref LL_RCC_PERIPH_FREQUENCY_NA indicates that no clock source selected
|
|
*/
|
|
uint32_t LL_RCC_GetUSBClockFreq(uint32_t USBxSource)
|
|
{
|
|
uint32_t usb_frequency = LL_RCC_PERIPH_FREQUENCY_NO;
|
|
|
|
/* Check parameter */
|
|
assert_param(IS_LL_RCC_USB_CLKSOURCE(USBxSource));
|
|
|
|
/* USBCLK clock frequency */
|
|
switch (LL_RCC_GetUSBClockSource(USBxSource))
|
|
{
|
|
case LL_RCC_USB_CLKSOURCE_PLL: /* PLL clock used as USB clock source */
|
|
if (LL_RCC_PLL_IsReady())
|
|
{
|
|
usb_frequency = RCC_PLL_GetFreqDomain_SYS();
|
|
}
|
|
break;
|
|
|
|
case LL_RCC_USB_CLKSOURCE_PLL_DIV_1_5: /* PLL clock used as USB clock source */
|
|
default:
|
|
if (LL_RCC_PLL_IsReady())
|
|
{
|
|
usb_frequency = (RCC_PLL_GetFreqDomain_SYS() * 3) / 2;
|
|
}
|
|
break;
|
|
}
|
|
|
|
return usb_frequency;
|
|
}
|
|
#endif /* USB */
|
|
|
|
#if defined(RCC_CFGR_ADCPRE) || defined(RCC_CFGR2_ADC1PRES) || defined(RCC_CFGR2_ADCPRE12) || defined(RCC_CFGR2_ADCPRE34)
|
|
/**
|
|
* @brief Return ADCx clock frequency
|
|
* @param ADCxSource This parameter can be one of the following values:
|
|
* @arg @ref LL_RCC_ADC_CLKSOURCE (*)
|
|
* @arg @ref LL_RCC_ADC1_CLKSOURCE (*)
|
|
* @arg @ref LL_RCC_ADC12_CLKSOURCE (*)
|
|
* @arg @ref LL_RCC_ADC34_CLKSOURCE (*)
|
|
*
|
|
* (*) value not defined in all devices
|
|
* @retval ADC clock frequency (in Hz)
|
|
*/
|
|
uint32_t LL_RCC_GetADCClockFreq(uint32_t ADCxSource)
|
|
{
|
|
uint32_t adc_prescaler = 0U;
|
|
uint32_t adc_frequency = LL_RCC_PERIPH_FREQUENCY_NO;
|
|
|
|
/* Check parameter */
|
|
assert_param(IS_LL_RCC_ADC_CLKSOURCE(ADCxSource));
|
|
|
|
/* Get ADC prescaler */
|
|
adc_prescaler = LL_RCC_GetADCClockSource(ADCxSource);
|
|
|
|
#if defined(RCC_CFGR_ADCPRE)
|
|
/* ADC frequency = PCLK2 frequency / ADC prescaler (2, 4, 6 or 8) */
|
|
adc_frequency = RCC_GetPCLK2ClockFreq(RCC_GetHCLKClockFreq(RCC_GetSystemClockFreq()))
|
|
/ (((adc_prescaler >> POSITION_VAL(ADCxSource)) + 1U) * 2U);
|
|
#else
|
|
if ((adc_prescaler & 0x0000FFFFU) == ((uint32_t)0x00000000U))
|
|
{
|
|
/* ADC frequency = HCLK frequency */
|
|
adc_frequency = RCC_GetHCLKClockFreq(RCC_GetSystemClockFreq());
|
|
}
|
|
else
|
|
{
|
|
/* ADC frequency = PCLK2 frequency / ADC prescaler (from 1 to 256) */
|
|
adc_frequency = RCC_GetPCLK2ClockFreq(RCC_GetHCLKClockFreq(RCC_GetSystemClockFreq()))
|
|
/ (aADCPrescTable[((adc_prescaler & 0x0000FFFFU) >> POSITION_VAL(ADCxSource)) & 0xFU]);
|
|
}
|
|
#endif /* RCC_CFGR_ADCPRE */
|
|
|
|
return adc_frequency;
|
|
}
|
|
#endif /*RCC_CFGR_ADCPRE || RCC_CFGR2_ADC1PRES || RCC_CFGR2_ADCPRE12 || RCC_CFGR2_ADCPRE34 */
|
|
|
|
#if defined(RCC_CFGR_SDADCPRE)
|
|
/**
|
|
* @brief Return SDADCx clock frequency
|
|
* @param SDADCxSource This parameter can be one of the following values:
|
|
* @arg @ref LL_RCC_SDADC_CLKSOURCE
|
|
* @retval SDADC clock frequency (in Hz)
|
|
*/
|
|
uint32_t LL_RCC_GetSDADCClockFreq(uint32_t SDADCxSource)
|
|
{
|
|
uint32_t sdadc_prescaler = 0U;
|
|
uint32_t sdadc_frequency = LL_RCC_PERIPH_FREQUENCY_NO;
|
|
|
|
/* Check parameter */
|
|
assert_param(IS_LL_RCC_SDADC_CLKSOURCE(SDADCxSource));
|
|
|
|
/* Get SDADC prescaler */
|
|
sdadc_prescaler = LL_RCC_GetSDADCClockSource(SDADCxSource);
|
|
|
|
/* SDADC frequency = SYSTEM frequency / SDADC prescaler (from 2 to 48) */
|
|
sdadc_frequency = RCC_GetSystemClockFreq()
|
|
/ (aSDADCPrescTable[(sdadc_prescaler >> POSITION_VAL(SDADCxSource)) & 0xFU]);
|
|
|
|
return sdadc_frequency;
|
|
}
|
|
#endif /*RCC_CFGR_SDADCPRE */
|
|
|
|
#if defined(CEC)
|
|
/**
|
|
* @brief Return CECx clock frequency
|
|
* @param CECxSource This parameter can be one of the following values:
|
|
* @arg @ref LL_RCC_CEC_CLKSOURCE
|
|
* @retval CEC clock frequency (in Hz)
|
|
* @arg @ref LL_RCC_PERIPH_FREQUENCY_NO indicates that oscillators (HSI or LSE) are not ready
|
|
*/
|
|
uint32_t LL_RCC_GetCECClockFreq(uint32_t CECxSource)
|
|
{
|
|
uint32_t cec_frequency = LL_RCC_PERIPH_FREQUENCY_NO;
|
|
|
|
/* Check parameter */
|
|
assert_param(IS_LL_RCC_CEC_CLKSOURCE(CECxSource));
|
|
|
|
/* CECCLK clock frequency */
|
|
switch (LL_RCC_GetCECClockSource(CECxSource))
|
|
{
|
|
case LL_RCC_CEC_CLKSOURCE_HSI_DIV244: /* HSI / 244 clock used as CEC clock source */
|
|
if (LL_RCC_HSI_IsReady())
|
|
{
|
|
cec_frequency = HSI_VALUE / 244U;
|
|
}
|
|
break;
|
|
|
|
case LL_RCC_CEC_CLKSOURCE_LSE: /* LSE clock used as CEC clock source */
|
|
default:
|
|
if (LL_RCC_LSE_IsReady())
|
|
{
|
|
cec_frequency = LSE_VALUE;
|
|
}
|
|
break;
|
|
}
|
|
|
|
return cec_frequency;
|
|
}
|
|
#endif /* CEC */
|
|
|
|
#if defined(RCC_CFGR3_TIMSW)
|
|
/**
|
|
* @brief Return TIMx clock frequency
|
|
* @param TIMxSource This parameter can be one of the following values:
|
|
* @arg @ref LL_RCC_TIM1_CLKSOURCE
|
|
* @arg @ref LL_RCC_TIM8_CLKSOURCE (*)
|
|
* @arg @ref LL_RCC_TIM15_CLKSOURCE (*)
|
|
* @arg @ref LL_RCC_TIM16_CLKSOURCE (*)
|
|
* @arg @ref LL_RCC_TIM17_CLKSOURCE (*)
|
|
* @arg @ref LL_RCC_TIM20_CLKSOURCE (*)
|
|
* @arg @ref LL_RCC_TIM2_CLKSOURCE (*)
|
|
* @arg @ref LL_RCC_TIM34_CLKSOURCE (*)
|
|
*
|
|
* (*) value not defined in all devices
|
|
* @retval TIM clock frequency (in Hz)
|
|
*/
|
|
uint32_t LL_RCC_GetTIMClockFreq(uint32_t TIMxSource)
|
|
{
|
|
uint32_t tim_frequency = LL_RCC_PERIPH_FREQUENCY_NO;
|
|
|
|
/* Check parameter */
|
|
assert_param(IS_LL_RCC_TIM_CLKSOURCE(TIMxSource));
|
|
|
|
if (TIMxSource == LL_RCC_TIM1_CLKSOURCE)
|
|
{
|
|
/* TIM1CLK clock frequency */
|
|
if (LL_RCC_GetTIMClockSource(LL_RCC_TIM1_CLKSOURCE) == LL_RCC_TIM1_CLKSOURCE_PCLK2)
|
|
{
|
|
/* PCLK2 used as TIM1 clock source */
|
|
tim_frequency = RCC_GetPCLK2ClockFreq(RCC_GetHCLKClockFreq(RCC_GetSystemClockFreq()));
|
|
}
|
|
else /* LL_RCC_TIM1_CLKSOURCE_PLL */
|
|
{
|
|
/* PLL clock used as TIM1 clock source */
|
|
tim_frequency = RCC_PLL_GetFreqDomain_SYS();
|
|
}
|
|
}
|
|
|
|
#if defined(RCC_CFGR3_TIM8SW)
|
|
if (TIMxSource == LL_RCC_TIM8_CLKSOURCE)
|
|
{
|
|
/* TIM8CLK clock frequency */
|
|
if (LL_RCC_GetTIMClockSource(LL_RCC_TIM8_CLKSOURCE) == LL_RCC_TIM8_CLKSOURCE_PCLK2)
|
|
{
|
|
/* PCLK2 used as TIM8 clock source */
|
|
tim_frequency = RCC_GetPCLK2ClockFreq(RCC_GetHCLKClockFreq(RCC_GetSystemClockFreq()));
|
|
}
|
|
else /* LL_RCC_TIM8_CLKSOURCE_PLL */
|
|
{
|
|
/* PLL clock used as TIM8 clock source */
|
|
tim_frequency = RCC_PLL_GetFreqDomain_SYS();
|
|
}
|
|
}
|
|
#endif /*RCC_CFGR3_TIM8SW*/
|
|
|
|
#if defined(RCC_CFGR3_TIM15SW)
|
|
if (TIMxSource == LL_RCC_TIM15_CLKSOURCE)
|
|
{
|
|
/* TIM15CLK clock frequency */
|
|
if (LL_RCC_GetTIMClockSource(LL_RCC_TIM15_CLKSOURCE) == LL_RCC_TIM15_CLKSOURCE_PCLK2)
|
|
{
|
|
/* PCLK2 used as TIM15 clock source */
|
|
tim_frequency = RCC_GetPCLK2ClockFreq(RCC_GetHCLKClockFreq(RCC_GetSystemClockFreq()));
|
|
}
|
|
else /* LL_RCC_TIM15_CLKSOURCE_PLL */
|
|
{
|
|
/* PLL clock used as TIM15 clock source */
|
|
tim_frequency = RCC_PLL_GetFreqDomain_SYS();
|
|
}
|
|
}
|
|
#endif /*RCC_CFGR3_TIM15SW*/
|
|
|
|
#if defined(RCC_CFGR3_TIM16SW)
|
|
if (TIMxSource == LL_RCC_TIM16_CLKSOURCE)
|
|
{
|
|
/* TIM16CLK clock frequency */
|
|
if (LL_RCC_GetTIMClockSource(LL_RCC_TIM16_CLKSOURCE) == LL_RCC_TIM16_CLKSOURCE_PCLK2)
|
|
{
|
|
/* PCLK2 used as TIM16 clock source */
|
|
tim_frequency = RCC_GetPCLK2ClockFreq(RCC_GetHCLKClockFreq(RCC_GetSystemClockFreq()));
|
|
}
|
|
else /* LL_RCC_TIM16_CLKSOURCE_PLL */
|
|
{
|
|
/* PLL clock used as TIM16 clock source */
|
|
tim_frequency = RCC_PLL_GetFreqDomain_SYS();
|
|
}
|
|
}
|
|
#endif /*RCC_CFGR3_TIM16SW*/
|
|
|
|
#if defined(RCC_CFGR3_TIM17SW)
|
|
if (TIMxSource == LL_RCC_TIM17_CLKSOURCE)
|
|
{
|
|
/* TIM17CLK clock frequency */
|
|
if (LL_RCC_GetTIMClockSource(LL_RCC_TIM17_CLKSOURCE) == LL_RCC_TIM17_CLKSOURCE_PCLK2)
|
|
{
|
|
/* PCLK2 used as TIM17 clock source */
|
|
tim_frequency = RCC_GetPCLK2ClockFreq(RCC_GetHCLKClockFreq(RCC_GetSystemClockFreq()));
|
|
}
|
|
else /* LL_RCC_TIM17_CLKSOURCE_PLL */
|
|
{
|
|
/* PLL clock used as TIM17 clock source */
|
|
tim_frequency = RCC_PLL_GetFreqDomain_SYS();
|
|
}
|
|
}
|
|
#endif /*RCC_CFGR3_TIM17SW*/
|
|
|
|
#if defined(RCC_CFGR3_TIM20SW)
|
|
if (TIMxSource == LL_RCC_TIM20_CLKSOURCE)
|
|
{
|
|
/* TIM20CLK clock frequency */
|
|
if (LL_RCC_GetTIMClockSource(LL_RCC_TIM20_CLKSOURCE) == LL_RCC_TIM20_CLKSOURCE_PCLK2)
|
|
{
|
|
/* PCLK2 used as TIM20 clock source */
|
|
tim_frequency = RCC_GetPCLK2ClockFreq(RCC_GetHCLKClockFreq(RCC_GetSystemClockFreq()));
|
|
}
|
|
else /* LL_RCC_TIM20_CLKSOURCE_PLL */
|
|
{
|
|
/* PLL clock used as TIM20 clock source */
|
|
tim_frequency = RCC_PLL_GetFreqDomain_SYS();
|
|
}
|
|
}
|
|
#endif /*RCC_CFGR3_TIM20SW*/
|
|
|
|
#if defined(RCC_CFGR3_TIM2SW)
|
|
if (TIMxSource == LL_RCC_TIM2_CLKSOURCE)
|
|
{
|
|
/* TIM2CLK clock frequency */
|
|
if (LL_RCC_GetTIMClockSource(LL_RCC_TIM2_CLKSOURCE) == LL_RCC_TIM2_CLKSOURCE_PCLK1)
|
|
{
|
|
/* PCLK1 used as TIM2 clock source */
|
|
tim_frequency = RCC_GetPCLK1ClockFreq(RCC_GetHCLKClockFreq(RCC_GetSystemClockFreq()));
|
|
}
|
|
else /* LL_RCC_TIM2_CLKSOURCE_PLL */
|
|
{
|
|
/* PLL clock used as TIM2 clock source */
|
|
tim_frequency = RCC_PLL_GetFreqDomain_SYS();
|
|
}
|
|
}
|
|
#endif /*RCC_CFGR3_TIM2SW*/
|
|
|
|
#if defined(RCC_CFGR3_TIM34SW)
|
|
if (TIMxSource == LL_RCC_TIM34_CLKSOURCE)
|
|
{
|
|
/* TIM3/4 CLK clock frequency */
|
|
if (LL_RCC_GetTIMClockSource(LL_RCC_TIM34_CLKSOURCE) == LL_RCC_TIM34_CLKSOURCE_PCLK1)
|
|
{
|
|
/* PCLK1 used as TIM3/4 clock source */
|
|
tim_frequency = RCC_GetPCLK1ClockFreq(RCC_GetHCLKClockFreq(RCC_GetSystemClockFreq()));
|
|
}
|
|
else /* LL_RCC_TIM34_CLKSOURCE_PLL */
|
|
{
|
|
/* PLL clock used as TIM3/4 clock source */
|
|
tim_frequency = RCC_PLL_GetFreqDomain_SYS();
|
|
}
|
|
}
|
|
#endif /*RCC_CFGR3_TIM34SW*/
|
|
|
|
return tim_frequency;
|
|
}
|
|
#endif /*RCC_CFGR3_TIMSW*/
|
|
|
|
#if defined(HRTIM1)
|
|
/**
|
|
* @brief Return HRTIMx clock frequency
|
|
* @param HRTIMxSource This parameter can be one of the following values:
|
|
* @arg @ref LL_RCC_HRTIM1_CLKSOURCE
|
|
* @retval HRTIM clock frequency (in Hz)
|
|
*/
|
|
uint32_t LL_RCC_GetHRTIMClockFreq(uint32_t HRTIMxSource)
|
|
{
|
|
uint32_t hrtim_frequency = LL_RCC_PERIPH_FREQUENCY_NO;
|
|
|
|
/* Check parameter */
|
|
assert_param(IS_LL_RCC_HRTIM_CLKSOURCE(HRTIMxSource));
|
|
|
|
/* HRTIM1CLK clock frequency */
|
|
if (LL_RCC_GetTIMClockSource(LL_RCC_HRTIM1_CLKSOURCE) == LL_RCC_HRTIM1_CLKSOURCE_PCLK2)
|
|
{
|
|
/* PCLK2 used as HRTIM1 clock source */
|
|
hrtim_frequency = RCC_GetPCLK2ClockFreq(RCC_GetHCLKClockFreq(RCC_GetSystemClockFreq()));
|
|
}
|
|
else /* LL_RCC_HRTIM1_CLKSOURCE_PLL */
|
|
{
|
|
/* PLL clock used as HRTIM1 clock source */
|
|
hrtim_frequency = RCC_PLL_GetFreqDomain_SYS();
|
|
}
|
|
|
|
return hrtim_frequency;
|
|
}
|
|
#endif /* HRTIM1 */
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/** @addtogroup RCC_LL_Private_Functions
|
|
* @{
|
|
*/
|
|
|
|
/**
|
|
* @brief Return SYSTEM clock frequency
|
|
* @retval SYSTEM clock frequency (in Hz)
|
|
*/
|
|
uint32_t RCC_GetSystemClockFreq(void)
|
|
{
|
|
uint32_t frequency = 0U;
|
|
|
|
/* Get SYSCLK source -------------------------------------------------------*/
|
|
switch (LL_RCC_GetSysClkSource())
|
|
{
|
|
case LL_RCC_SYS_CLKSOURCE_STATUS_HSI: /* HSI used as system clock source */
|
|
frequency = HSI_VALUE;
|
|
break;
|
|
|
|
case LL_RCC_SYS_CLKSOURCE_STATUS_HSE: /* HSE used as system clock source */
|
|
frequency = HSE_VALUE;
|
|
break;
|
|
|
|
case LL_RCC_SYS_CLKSOURCE_STATUS_PLL: /* PLL used as system clock source */
|
|
frequency = RCC_PLL_GetFreqDomain_SYS();
|
|
break;
|
|
|
|
default:
|
|
frequency = HSI_VALUE;
|
|
break;
|
|
}
|
|
|
|
return frequency;
|
|
}
|
|
|
|
/**
|
|
* @brief Return HCLK clock frequency
|
|
* @param SYSCLK_Frequency SYSCLK clock frequency
|
|
* @retval HCLK clock frequency (in Hz)
|
|
*/
|
|
uint32_t RCC_GetHCLKClockFreq(uint32_t SYSCLK_Frequency)
|
|
{
|
|
/* HCLK clock frequency */
|
|
return __LL_RCC_CALC_HCLK_FREQ(SYSCLK_Frequency, LL_RCC_GetAHBPrescaler());
|
|
}
|
|
|
|
/**
|
|
* @brief Return PCLK1 clock frequency
|
|
* @param HCLK_Frequency HCLK clock frequency
|
|
* @retval PCLK1 clock frequency (in Hz)
|
|
*/
|
|
uint32_t RCC_GetPCLK1ClockFreq(uint32_t HCLK_Frequency)
|
|
{
|
|
/* PCLK1 clock frequency */
|
|
return __LL_RCC_CALC_PCLK1_FREQ(HCLK_Frequency, LL_RCC_GetAPB1Prescaler());
|
|
}
|
|
|
|
/**
|
|
* @brief Return PCLK2 clock frequency
|
|
* @param HCLK_Frequency HCLK clock frequency
|
|
* @retval PCLK2 clock frequency (in Hz)
|
|
*/
|
|
uint32_t RCC_GetPCLK2ClockFreq(uint32_t HCLK_Frequency)
|
|
{
|
|
/* PCLK2 clock frequency */
|
|
return __LL_RCC_CALC_PCLK2_FREQ(HCLK_Frequency, LL_RCC_GetAPB2Prescaler());
|
|
}
|
|
|
|
/**
|
|
* @brief Return PLL clock frequency used for system domain
|
|
* @retval PLL clock frequency (in Hz)
|
|
*/
|
|
uint32_t RCC_PLL_GetFreqDomain_SYS(void)
|
|
{
|
|
uint32_t pllinputfreq = 0U, pllsource = 0U;
|
|
|
|
/* PLL_VCO = (HSE_VALUE or HSI_VALUE / PLL divider) * PLL Multiplicator */
|
|
|
|
/* Get PLL source */
|
|
pllsource = LL_RCC_PLL_GetMainSource();
|
|
|
|
switch (pllsource)
|
|
{
|
|
#if defined(RCC_PLLSRC_PREDIV1_SUPPORT)
|
|
case LL_RCC_PLLSOURCE_HSI: /* HSI used as PLL clock source */
|
|
pllinputfreq = HSI_VALUE;
|
|
#else
|
|
case LL_RCC_PLLSOURCE_HSI_DIV_2: /* HSI used as PLL clock source */
|
|
pllinputfreq = HSI_VALUE / 2;
|
|
#endif /* RCC_PLLSRC_PREDIV1_SUPPORT */
|
|
break;
|
|
|
|
case LL_RCC_PLLSOURCE_HSE: /* HSE used as PLL clock source */
|
|
pllinputfreq = HSE_VALUE;
|
|
break;
|
|
|
|
default:
|
|
#if defined(RCC_PLLSRC_PREDIV1_SUPPORT)
|
|
pllinputfreq = HSI_VALUE;
|
|
#else
|
|
pllinputfreq = HSI_VALUE / 2;
|
|
#endif /* RCC_PLLSRC_PREDIV1_SUPPORT */
|
|
break;
|
|
}
|
|
#if defined(RCC_PLLSRC_PREDIV1_SUPPORT)
|
|
return __LL_RCC_CALC_PLLCLK_FREQ(pllinputfreq, LL_RCC_PLL_GetMultiplicator(), LL_RCC_PLL_GetPrediv());
|
|
#else
|
|
return __LL_RCC_CALC_PLLCLK_FREQ((pllinputfreq / (LL_RCC_PLL_GetPrediv() + 1U)), LL_RCC_PLL_GetMultiplicator());
|
|
#endif /* RCC_PLLSRC_PREDIV1_SUPPORT */
|
|
}
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
#endif /* defined(RCC) */
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
#endif /* USE_FULL_LL_DRIVER */
|
|
|
|
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
|