en 129
fix LPC812 PWM
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by 
mbed official
Diff: targets/cmsis/TARGET_STM/TARGET_STM32F1/stm32f1xx_hal_rcc_ex.c
- Revision:
- 0:9b334a45a8ff
- Child:
- 124:6a4a5b7d7324
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/cmsis/TARGET_STM/TARGET_STM32F1/stm32f1xx_hal_rcc_ex.c Thu Oct 01 15:25:22 2015 +0300
@@ -0,0 +1,1946 @@
+/**
+ ******************************************************************************
+ * @file stm32f1xx_hal_rcc_ex.c
+ * @author MCD Application Team
+ * @version V1.0.0
+ * @date 15-December-2014
+ * @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) 2014 STMicroelectronics</center></h2>
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 3. Neither the name of STMicroelectronics nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ ******************************************************************************
+ */
+
+/* Includes ------------------------------------------------------------------*/
+#include "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
+ * @{
+ */
+#define PLL2_TIMEOUT_VALUE ((uint32_t)100) /* 100 ms */
+
+/* Alias word address of PLL2ON bit */
+#define PLL2ON_BITNUMBER POSITION_VAL(RCC_CR_PLL2ON)
+#define CR_PLL2ON_BB ((uint32_t)(PERIPH_BB_BASE + (RCC_CR_OFFSET_BB * 32) + (PLL2ON_BITNUMBER * 4)))
+
+
+/**
+ * @}
+ */
+/* Private macro -------------------------------------------------------------*/
+/** @defgroup RCCEx_Private_Macros RCCEx Private Macros
+ * @{
+ */
+/**
+ * @}
+ */
+
+/** @defgroup RCCEx_Private_Macros RCCEx Private Macros
+ * @{
+ */
+
+/**
+ * @}
+ */
+
+
+/* Private variables ---------------------------------------------------------*/
+/* Private function prototypes -----------------------------------------------*/
+/* Private functions ---------------------------------------------------------*/
+
+/**
+ * @}
+ */
+
+/** @addtogroup RCC
+ * @{
+ */
+
+/** @addtogroup RCC_Exported_Functions
+ * @{
+ */
+
+#if defined(STM32F105xC) || defined(STM32F107xC) || defined (STM32F100xB) || defined (STM32F100xE)
+/** @addtogroup RCC_Exported_Functions_Group1
+ * @{
+ */
+
+/**
+ * @brief Resets the RCC clock configuration to the default reset state.
+ * @note The default reset state of the clock configuration is given below:
+ * - HSI ON and used as system clock source
+ * - HSE and PLL OFF
+ * - AHB, APB1 and APB2 prescaler set to 1.
+ * - CSS and MCO1 OFF
+ * - All interrupts disabled
+ * @note This function doesn't modify the configuration of the
+ * - Peripheral clocks
+ * - LSI, LSE and RTC clocks
+ * @retval None
+ */
+void HAL_RCC_DeInit(void)
+{
+ /* Switch SYSCLK to HSI */
+ CLEAR_BIT(RCC->CFGR, RCC_CFGR_SW);
+
+ /* Reset HSEON, CSSON, & PLLON bits */
+ CLEAR_BIT(RCC->CR, RCC_CR_HSEON | RCC_CR_CSSON | RCC_CR_PLLON);
+
+ /* Reset HSEBYP bit */
+ CLEAR_BIT(RCC->CR, RCC_CR_HSEBYP);
+
+ /* Reset CFGR register */
+ CLEAR_REG(RCC->CFGR);
+
+ /* Set HSITRIM bits to the reset value */
+ MODIFY_REG(RCC->CR, RCC_CR_HSITRIM, ((uint32_t)0x10 << POSITION_VAL(RCC_CR_HSITRIM)));
+
+ /* Reset CFGR2 register */
+ CLEAR_REG(RCC->CFGR2);
+
+ /* Disable all interrupts */
+ CLEAR_REG(RCC->CIR);
+}
+/**
+ * @}
+ */
+
+#endif /* STM32F105xC || STM32F107xC || STM32F100xB || STM32F100xE */
+
+#if defined(STM32F105xC) || defined(STM32F107xC)
+/** @addtogroup RCC_Exported_Functions_Group1
+ * @{
+ */
+
+/**
+ * @brief Initializes the RCC Oscillators according to the specified parameters in the
+ * RCC_OscInitTypeDef.
+ * @param RCC_OscInitStruct: pointer to an RCC_OscInitTypeDef structure that
+ * contains the configuration information for the RCC Oscillators.
+ * @note The PLL is not disabled when used as system clock.
+ * @note The PLL is not disabled when USB OTG FS clock is enabled (specific to devices with USB FS)
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_RCC_OscConfig(RCC_OscInitTypeDef *RCC_OscInitStruct)
+{
+ uint32_t tickstart = 0;
+
+ /* Check the parameters */
+ assert_param(RCC_OscInitStruct != NULL);
+ assert_param(IS_RCC_OSCILLATORTYPE(RCC_OscInitStruct->OscillatorType));
+
+ /*------------------------------- HSE Configuration ------------------------*/
+ if(((RCC_OscInitStruct->OscillatorType) & RCC_OSCILLATORTYPE_HSE) == RCC_OSCILLATORTYPE_HSE)
+ {
+ /* Check the parameters */
+ assert_param(IS_RCC_HSE(RCC_OscInitStruct->HSEState));
+
+ /* When the HSE is used as system clock or clock source for PLL in these cases it is not allowed to be disabled */
+ if((__HAL_RCC_GET_SYSCLK_SOURCE() == RCC_SYSCLKSOURCE_STATUS_HSE)
+ || ((__HAL_RCC_GET_SYSCLK_SOURCE() == RCC_SYSCLKSOURCE_STATUS_PLLCLK) && (__HAL_RCC_GET_PLL_OSCSOURCE() == RCC_PLLSOURCE_HSE)))
+ {
+ if((__HAL_RCC_GET_FLAG(RCC_FLAG_HSERDY) != RESET) && (RCC_OscInitStruct->HSEState != RCC_HSE_ON) && (RCC_OscInitStruct->HSEState != RCC_HSE_BYPASS))
+ {
+ return HAL_ERROR;
+ }
+ }
+ else
+ {
+ /* Reset HSEON and HSEBYP bits before configuring the HSE --------------*/
+ __HAL_RCC_HSE_CONFIG(RCC_HSE_OFF);
+
+ /* Get Start Tick*/
+ tickstart = HAL_GetTick();
+
+ /* Wait till HSE is disabled */
+ while(__HAL_RCC_GET_FLAG(RCC_FLAG_HSERDY) != RESET)
+ {
+ if((HAL_GetTick() - tickstart ) > HSE_TIMEOUT_VALUE)
+ {
+ return HAL_TIMEOUT;
+ }
+ }
+
+ /* Set the new HSE configuration ---------------------------------------*/
+ __HAL_RCC_HSE_CONFIG(RCC_OscInitStruct->HSEState);
+
+ /* Check the HSE State */
+ if(RCC_OscInitStruct->HSEState != RCC_HSE_OFF)
+ {
+ /* Get Start Tick*/
+ tickstart = HAL_GetTick();
+
+ /* Wait till HSE is ready */
+ while(__HAL_RCC_GET_FLAG(RCC_FLAG_HSERDY) == RESET)
+ {
+ if((HAL_GetTick() - tickstart ) > HSE_TIMEOUT_VALUE)
+ {
+ return HAL_TIMEOUT;
+ }
+ }
+ }
+ else
+ {
+ /* Get Start Tick*/
+ tickstart = HAL_GetTick();
+
+ /* Wait till HSE is disabled */
+ while(__HAL_RCC_GET_FLAG(RCC_FLAG_HSERDY) != RESET)
+ {
+ if((HAL_GetTick() - tickstart ) > HSE_TIMEOUT_VALUE)
+ {
+ return HAL_TIMEOUT;
+ }
+ }
+ }
+ }
+ }
+ /*----------------------------- HSI Configuration --------------------------*/
+ if(((RCC_OscInitStruct->OscillatorType) & RCC_OSCILLATORTYPE_HSI) == RCC_OSCILLATORTYPE_HSI)
+ {
+ /* Check the parameters */
+ assert_param(IS_RCC_HSI(RCC_OscInitStruct->HSIState));
+ assert_param(IS_RCC_CALIBRATION_VALUE(RCC_OscInitStruct->HSICalibrationValue));
+
+ /* Check if HSI is used as system clock or as PLL source when PLL is selected as system clock */
+ if((__HAL_RCC_GET_SYSCLK_SOURCE() == RCC_SYSCLKSOURCE_STATUS_HSI)
+ || ((__HAL_RCC_GET_SYSCLK_SOURCE() == RCC_SYSCLKSOURCE_STATUS_PLLCLK) && (__HAL_RCC_GET_PLL_OSCSOURCE() == RCC_PLLSOURCE_HSI_DIV2)))
+ {
+ /* When HSI is used as system clock it will not disabled */
+ if((__HAL_RCC_GET_FLAG(RCC_FLAG_HSIRDY) != RESET) && (RCC_OscInitStruct->HSIState != RCC_HSI_ON))
+ {
+ return HAL_ERROR;
+ }
+ /* Otherwise, just the calibration is allowed */
+ else
+ {
+ /* Adjusts the Internal High Speed oscillator (HSI) calibration value.*/
+ __HAL_RCC_HSI_CALIBRATIONVALUE_ADJUST(RCC_OscInitStruct->HSICalibrationValue);
+ }
+ }
+ else
+ {
+ /* Check the HSI State */
+ if((RCC_OscInitStruct->HSIState)!= RCC_HSI_OFF)
+ {
+ /* Enable the Internal High Speed oscillator (HSI). */
+ __HAL_RCC_HSI_ENABLE();
+
+ /* Get Start Tick*/
+ tickstart = HAL_GetTick();
+
+ /* Wait till HSI is ready */
+ while(__HAL_RCC_GET_FLAG(RCC_FLAG_HSIRDY) == RESET)
+ {
+ if((HAL_GetTick() - tickstart ) > HSI_TIMEOUT_VALUE)
+ {
+ return HAL_TIMEOUT;
+ }
+ }
+
+ /* Adjusts the Internal High Speed oscillator (HSI) calibration value.*/
+ __HAL_RCC_HSI_CALIBRATIONVALUE_ADJUST(RCC_OscInitStruct->HSICalibrationValue);
+ }
+ else
+ {
+ /* Disable the Internal High Speed oscillator (HSI). */
+ __HAL_RCC_HSI_DISABLE();
+
+ /* Get Start Tick*/
+ tickstart = HAL_GetTick();
+
+ /* Wait till HSI is disabled */
+ while(__HAL_RCC_GET_FLAG(RCC_FLAG_HSIRDY) != RESET)
+ {
+ if((HAL_GetTick() - tickstart ) > HSI_TIMEOUT_VALUE)
+ {
+ return HAL_TIMEOUT;
+ }
+ }
+ }
+ }
+ }
+ /*------------------------------ LSI Configuration -------------------------*/
+ if(((RCC_OscInitStruct->OscillatorType) & RCC_OSCILLATORTYPE_LSI) == RCC_OSCILLATORTYPE_LSI)
+ {
+ /* Check the parameters */
+ assert_param(IS_RCC_LSI(RCC_OscInitStruct->LSIState));
+
+ /* Check the LSI State */
+ if((RCC_OscInitStruct->LSIState)!= RCC_LSI_OFF)
+ {
+ /* Enable the Internal Low Speed oscillator (LSI). */
+ __HAL_RCC_LSI_ENABLE();
+
+ /* Get Start Tick*/
+ tickstart = HAL_GetTick();
+
+ /* Wait till LSI is ready */
+ while(__HAL_RCC_GET_FLAG(RCC_FLAG_LSIRDY) == RESET)
+ {
+ if((HAL_GetTick() - tickstart ) > LSI_TIMEOUT_VALUE)
+ {
+ return HAL_TIMEOUT;
+ }
+ }
+ /* To have a fully stabilized clock in the specified range, a software temporization of 1ms
+ should be added.*/
+ HAL_Delay(1);
+ }
+ else
+ {
+ /* Disable the Internal Low Speed oscillator (LSI). */
+ __HAL_RCC_LSI_DISABLE();
+
+ /* Get Start Tick*/
+ tickstart = HAL_GetTick();
+
+ /* Wait till LSI is disabled */
+ while(__HAL_RCC_GET_FLAG(RCC_FLAG_LSIRDY) != RESET)
+ {
+ if((HAL_GetTick() - tickstart ) > LSI_TIMEOUT_VALUE)
+ {
+ return HAL_TIMEOUT;
+ }
+ }
+ }
+ }
+ /*------------------------------ LSE Configuration -------------------------*/
+ if(((RCC_OscInitStruct->OscillatorType) & RCC_OSCILLATORTYPE_LSE) == RCC_OSCILLATORTYPE_LSE)
+ {
+ /* Check the parameters */
+ assert_param(IS_RCC_LSE(RCC_OscInitStruct->LSEState));
+
+ /* Enable Power Clock*/
+ __HAL_RCC_PWR_CLK_ENABLE();
+
+ /* Enable write access to Backup domain */
+ 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 LSEON and LSEBYP bits before configuring the LSE ----------------*/
+ __HAL_RCC_LSE_CONFIG(RCC_LSE_OFF);
+
+ /* Get Start Tick*/
+ tickstart = HAL_GetTick();
+
+ /* Wait till LSE is disabled */
+ while(__HAL_RCC_GET_FLAG(RCC_FLAG_LSERDY) != RESET)
+ {
+ if((HAL_GetTick() - tickstart ) > RCC_LSE_TIMEOUT_VALUE)
+ {
+ return HAL_TIMEOUT;
+ }
+ }
+
+ /* Set the new LSE configuration -----------------------------------------*/
+ __HAL_RCC_LSE_CONFIG(RCC_OscInitStruct->LSEState);
+ /* Check the LSE State */
+ if((RCC_OscInitStruct->LSEState) == RCC_LSE_ON)
+ {
+ /* Get Start Tick*/
+ tickstart = HAL_GetTick();
+
+ /* Wait till LSE is ready */
+ while(__HAL_RCC_GET_FLAG(RCC_FLAG_LSERDY) == RESET)
+ {
+ if((HAL_GetTick() - tickstart ) > RCC_LSE_TIMEOUT_VALUE)
+ {
+ return HAL_TIMEOUT;
+ }
+ }
+ }
+ else
+ {
+ /* Get Start Tick*/
+ tickstart = HAL_GetTick();
+
+ /* Wait till LSE is disabled */
+ while(__HAL_RCC_GET_FLAG(RCC_FLAG_LSERDY) != RESET)
+ {
+ if((HAL_GetTick() - tickstart ) > RCC_LSE_TIMEOUT_VALUE)
+ {
+ return HAL_TIMEOUT;
+ }
+ }
+ }
+ }
+
+ /*-------------------------------- PLL2 Configuration -----------------------*/
+ /* Check the parameters */
+ assert_param(IS_RCC_PLL2(RCC_OscInitStruct->PLL2.PLL2State));
+ if ((RCC_OscInitStruct->PLL2.PLL2State) != RCC_PLL2_NONE)
+ {
+ /* 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
+ {
+ if((RCC_OscInitStruct->PLL2.PLL2State) == RCC_PLL2_ON)
+ {
+ /* Check the parameters */
+ assert_param(IS_RCC_PLL2_MUL(RCC_OscInitStruct->PLL2.PLL2MUL));
+ assert_param(IS_RCC_HSE_PREDIV2(RCC_OscInitStruct->PLL2.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() != RCC_OscInitStruct->PLL2.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(RCC_OscInitStruct->PLL2.HSEPrediv2Value);
+
+ /* Configure the main PLL2 multiplication factors. */
+ __HAL_RCC_PLL2_CONFIG(RCC_OscInitStruct->PLL2.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;
+ }
+ }
+ }
+ else
+ {
+ /* Set PREDIV1 source to HSE */
+ CLEAR_BIT(RCC->CFGR2, RCC_CFGR2_PREDIV1SRC);
+
+ /* 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;
+ }
+ }
+ }
+ }
+ }
+
+ /*-------------------------------- PLL Configuration -----------------------*/
+ /* Check the parameters */
+ assert_param(IS_RCC_PLL(RCC_OscInitStruct->PLL.PLLState));
+ if ((RCC_OscInitStruct->PLL.PLLState) != RCC_PLL_NONE)
+ {
+ /* Check if the PLL is used as system clock or not */
+ if(__HAL_RCC_GET_SYSCLK_SOURCE() != RCC_SYSCLKSOURCE_STATUS_PLLCLK)
+ {
+ if((RCC_OscInitStruct->PLL.PLLState) == RCC_PLL_ON)
+ {
+ /* Check the parameters */
+ assert_param(IS_RCC_PLLSOURCE(RCC_OscInitStruct->PLL.PLLSource));
+ assert_param(IS_RCC_PLL_MUL(RCC_OscInitStruct->PLL.PLLMUL));
+
+ /* Disable the main PLL. */
+ __HAL_RCC_PLL_DISABLE();
+
+ /* Get Start Tick*/
+ tickstart = HAL_GetTick();
+
+ /* Wait till PLL is disabled */
+ while(__HAL_RCC_GET_FLAG(RCC_FLAG_PLLRDY) != RESET)
+ {
+ if((HAL_GetTick() - tickstart ) > PLL_TIMEOUT_VALUE)
+ {
+ return HAL_TIMEOUT;
+ }
+ }
+
+ /* Configure the HSE prediv1 factor and source --------------------------------*/
+ /* It can be written only when the PLL is disabled. Not used in PLL source is different than HSE */
+ if(RCC_OscInitStruct->PLL.PLLSource == RCC_PLLSOURCE_HSE)
+ {
+ /* Check the parameter */
+ assert_param(IS_RCC_PREDIV1_SOURCE(RCC_OscInitStruct->Prediv1Source));
+ assert_param(IS_RCC_HSE_PREDIV(RCC_OscInitStruct->HSEPredivValue));
+
+ /* Set PREDIV1 source */
+ SET_BIT(RCC->CFGR2, RCC_OscInitStruct->Prediv1Source);
+
+ /* Set PREDIV1 Value */
+ __HAL_RCC_HSE_PREDIV_CONFIG(RCC_OscInitStruct->HSEPredivValue);
+ }
+
+ /* Configure the main PLL clock source and multiplication factors. */
+ __HAL_RCC_PLL_CONFIG(RCC_OscInitStruct->PLL.PLLSource,
+ RCC_OscInitStruct->PLL.PLLMUL);
+ /* Enable the main PLL. */
+ __HAL_RCC_PLL_ENABLE();
+
+ /* Get Start Tick*/
+ tickstart = HAL_GetTick();
+
+ /* Wait till PLL is ready */
+ while(__HAL_RCC_GET_FLAG(RCC_FLAG_PLLRDY) == RESET)
+ {
+ if((HAL_GetTick() - tickstart ) > PLL_TIMEOUT_VALUE)
+ {
+ return HAL_TIMEOUT;
+ }
+ }
+ }
+ else
+ {
+ /* Disable the main PLL. */
+ __HAL_RCC_PLL_DISABLE();
+
+ /* Get Start Tick*/
+ tickstart = HAL_GetTick();
+
+ /* Wait till PLL is disabled */
+ while(__HAL_RCC_GET_FLAG(RCC_FLAG_PLLRDY) != RESET)
+ {
+ if((HAL_GetTick() - tickstart ) > PLL_TIMEOUT_VALUE)
+ {
+ return HAL_TIMEOUT;
+ }
+ }
+ }
+ }
+ else
+ {
+ return HAL_ERROR;
+ }
+ }
+
+ return HAL_OK;
+}
+/**
+ * @}
+ */
+
+#endif /* STM32F105xC STM32F107xC */
+
+#if defined(STM32F101x6) || defined(STM32F101xB) || defined(STM32F101xE) || defined(STM32F101xG) || \
+ defined(STM32F102x6) || defined(STM32F102xB) || defined(STM32F103x6) || defined(STM32F103xB) || \
+ defined(STM32F103xE) || defined(STM32F103xG) || defined(STM32F105xC) || defined(STM32F107xC)
+/** @addtogroup RCC_Exported_Functions_Group1
+ * @{
+ */
+
+/**
+ * @brief Initializes the CPU, AHB and APB busses clocks according to the specified
+ * parameters in the RCC_ClkInitStruct.
+ * @param RCC_ClkInitStruct: pointer to an RCC_OscInitTypeDef structure that
+ * contains the configuration information for the RCC peripheral.
+ * @param FLatency: FLASH Latency
+ * This parameter can be one of the following values:
+ * @arg FLASH_LATENCY_0: FLASH 0 Latency cycle
+ *
+ * @note The SystemCoreClock CMSIS variable is used to store System Clock Frequency
+ * and updated by HAL_RCC_GetHCLKFreq() function called within this function
+ *
+ * @note The HSI is used (enabled by hardware) as system clock source after
+ * startup from Reset, wake-up from STOP and STANDBY mode, or in case
+ * of failure of the HSE used directly or indirectly as system clock
+ * (if the Clock Security System CSS is enabled).
+ *
+ * @note A switch from one clock source to another occurs only if the target
+ * clock source is ready (clock stable after startup delay or PLL locked).
+ * If a clock source which is not yet ready is selected, the switch will
+ * occur when the clock source will be ready.
+ * You can use HAL_RCC_GetClockConfig() function to know which clock is
+ * currently used as system clock source.
+ * @retval None
+ */
+HAL_StatusTypeDef HAL_RCC_ClockConfig(RCC_ClkInitTypeDef *RCC_ClkInitStruct, uint32_t FLatency)
+{
+ uint32_t tickstart = 0;
+
+ /* Check the parameters */
+ assert_param(RCC_ClkInitStruct != NULL);
+ assert_param(IS_RCC_CLOCKTYPE(RCC_ClkInitStruct->ClockType));
+ assert_param(IS_FLASH_LATENCY(FLatency));
+
+ /* To correctly read data from FLASH memory, the number of wait states (LATENCY)
+ must be correctly programmed according to the frequency of the CPU clock
+ (HCLK) of the device. */
+
+ /* Increasing the CPU frequency */
+ if(FLatency > (FLASH->ACR & FLASH_ACR_LATENCY))
+ {
+ /* Program the new number of wait states to the LATENCY bits in the FLASH_ACR register */
+ __HAL_FLASH_SET_LATENCY(FLatency);
+
+ /* Check that the new number of wait states is taken into account to access the Flash
+ memory by reading the FLASH_ACR register */
+ if((FLASH->ACR & FLASH_ACR_LATENCY) != FLatency)
+ {
+ return HAL_ERROR;
+ }
+ /*-------------------------- HCLK Configuration --------------------------*/
+ if(((RCC_ClkInitStruct->ClockType) & RCC_CLOCKTYPE_HCLK) == RCC_CLOCKTYPE_HCLK)
+ {
+ assert_param(IS_RCC_HCLK(RCC_ClkInitStruct->AHBCLKDivider));
+ MODIFY_REG(RCC->CFGR, RCC_CFGR_HPRE, RCC_ClkInitStruct->AHBCLKDivider);
+ }
+
+ /*------------------------- SYSCLK Configuration ---------------------------*/
+ if(((RCC_ClkInitStruct->ClockType) & RCC_CLOCKTYPE_SYSCLK) == RCC_CLOCKTYPE_SYSCLK)
+ {
+ assert_param(IS_RCC_SYSCLKSOURCE(RCC_ClkInitStruct->SYSCLKSource));
+
+ /* HSE is selected as System Clock Source */
+ if(RCC_ClkInitStruct->SYSCLKSource == RCC_SYSCLKSOURCE_HSE)
+ {
+ /* Check the HSE ready flag */
+ if(__HAL_RCC_GET_FLAG(RCC_FLAG_HSERDY) == RESET)
+ {
+ return HAL_ERROR;
+ }
+ }
+ /* PLL is selected as System Clock Source */
+ else if(RCC_ClkInitStruct->SYSCLKSource == RCC_SYSCLKSOURCE_PLLCLK)
+ {
+ /* Check the PLL ready flag */
+ if(__HAL_RCC_GET_FLAG(RCC_FLAG_PLLRDY) == RESET)
+ {
+ return HAL_ERROR;
+ }
+ }
+ /* HSI is selected as System Clock Source */
+ else
+ {
+ /* Check the HSI ready flag */
+ if(__HAL_RCC_GET_FLAG(RCC_FLAG_HSIRDY) == RESET)
+ {
+ return HAL_ERROR;
+ }
+ }
+
+ MODIFY_REG(RCC->CFGR, RCC_CFGR_SW, RCC_ClkInitStruct->SYSCLKSource);
+
+ /* Get Start Tick*/
+ tickstart = HAL_GetTick();
+
+ if(RCC_ClkInitStruct->SYSCLKSource == RCC_SYSCLKSOURCE_HSE)
+ {
+ while (__HAL_RCC_GET_SYSCLK_SOURCE() != RCC_SYSCLKSOURCE_STATUS_HSE)
+ {
+ if((HAL_GetTick() - tickstart ) > CLOCKSWITCH_TIMEOUT_VALUE)
+ {
+ return HAL_TIMEOUT;
+ }
+ }
+ }
+ else if(RCC_ClkInitStruct->SYSCLKSource == RCC_SYSCLKSOURCE_PLLCLK)
+ {
+ while (__HAL_RCC_GET_SYSCLK_SOURCE() != RCC_SYSCLKSOURCE_STATUS_PLLCLK)
+ {
+ if((HAL_GetTick() - tickstart ) > CLOCKSWITCH_TIMEOUT_VALUE)
+ {
+ return HAL_TIMEOUT;
+ }
+ }
+ }
+ else
+ {
+ while (__HAL_RCC_GET_SYSCLK_SOURCE() != RCC_SYSCLKSOURCE_STATUS_HSI)
+ {
+ if((HAL_GetTick() - tickstart ) > CLOCKSWITCH_TIMEOUT_VALUE)
+ {
+ return HAL_TIMEOUT;
+ }
+ }
+ }
+ }
+ }
+ /* Decreasing the CPU frequency */
+ else
+ {
+ /*-------------------------- HCLK Configuration --------------------------*/
+ if(((RCC_ClkInitStruct->ClockType) & RCC_CLOCKTYPE_HCLK) == RCC_CLOCKTYPE_HCLK)
+ {
+ assert_param(IS_RCC_HCLK(RCC_ClkInitStruct->AHBCLKDivider));
+ MODIFY_REG(RCC->CFGR, RCC_CFGR_HPRE, RCC_ClkInitStruct->AHBCLKDivider);
+ }
+
+ /*------------------------- SYSCLK Configuration -------------------------*/
+ if(((RCC_ClkInitStruct->ClockType) & RCC_CLOCKTYPE_SYSCLK) == RCC_CLOCKTYPE_SYSCLK)
+ {
+ assert_param(IS_RCC_SYSCLKSOURCE(RCC_ClkInitStruct->SYSCLKSource));
+
+ /* HSE is selected as System Clock Source */
+ if(RCC_ClkInitStruct->SYSCLKSource == RCC_SYSCLKSOURCE_HSE)
+ {
+ /* Check the HSE ready flag */
+ if(__HAL_RCC_GET_FLAG(RCC_FLAG_HSERDY) == RESET)
+ {
+ return HAL_ERROR;
+ }
+ }
+ /* PLL is selected as System Clock Source */
+ else if(RCC_ClkInitStruct->SYSCLKSource == RCC_SYSCLKSOURCE_PLLCLK)
+ {
+ /* Check the PLL ready flag */
+ if(__HAL_RCC_GET_FLAG(RCC_FLAG_PLLRDY) == RESET)
+ {
+ return HAL_ERROR;
+ }
+ }
+ /* HSI is selected as System Clock Source */
+ else
+ {
+ /* Check the HSI ready flag */
+ if(__HAL_RCC_GET_FLAG(RCC_FLAG_HSIRDY) == RESET)
+ {
+ return HAL_ERROR;
+ }
+ }
+
+ MODIFY_REG(RCC->CFGR, RCC_CFGR_SW, RCC_ClkInitStruct->SYSCLKSource);
+
+ /* Get Start Tick*/
+ tickstart = HAL_GetTick();
+
+ if(RCC_ClkInitStruct->SYSCLKSource == RCC_SYSCLKSOURCE_HSE)
+ {
+ while (__HAL_RCC_GET_SYSCLK_SOURCE() != RCC_SYSCLKSOURCE_STATUS_HSE)
+ {
+ if((HAL_GetTick() - tickstart ) > CLOCKSWITCH_TIMEOUT_VALUE)
+ {
+ return HAL_TIMEOUT;
+ }
+ }
+ }
+ else if(RCC_ClkInitStruct->SYSCLKSource == RCC_SYSCLKSOURCE_PLLCLK)
+ {
+ while (__HAL_RCC_GET_SYSCLK_SOURCE() != RCC_SYSCLKSOURCE_STATUS_PLLCLK)
+ {
+ if((HAL_GetTick() - tickstart ) > CLOCKSWITCH_TIMEOUT_VALUE)
+ {
+ return HAL_TIMEOUT;
+ }
+ }
+ }
+ else
+ {
+ while (__HAL_RCC_GET_SYSCLK_SOURCE() != RCC_SYSCLKSOURCE_STATUS_HSI)
+ {
+ if((HAL_GetTick() - tickstart ) > CLOCKSWITCH_TIMEOUT_VALUE)
+ {
+ return HAL_TIMEOUT;
+ }
+ }
+ }
+ }
+
+ /* Program the new number of wait states to the LATENCY bits in the FLASH_ACR register */
+ __HAL_FLASH_SET_LATENCY(FLatency);
+
+ /* Check that the new number of wait states is taken into account to access the Flash
+ memory by reading the FLASH_ACR register */
+ if((FLASH->ACR & FLASH_ACR_LATENCY) != FLatency)
+ {
+ return HAL_ERROR;
+ }
+ }
+
+ /*-------------------------- PCLK1 Configuration ---------------------------*/
+ if(((RCC_ClkInitStruct->ClockType) & RCC_CLOCKTYPE_PCLK1) == RCC_CLOCKTYPE_PCLK1)
+ {
+ assert_param(IS_RCC_PCLK(RCC_ClkInitStruct->APB1CLKDivider));
+ MODIFY_REG(RCC->CFGR, RCC_CFGR_PPRE1, RCC_ClkInitStruct->APB1CLKDivider);
+ }
+
+ /*-------------------------- PCLK2 Configuration ---------------------------*/
+ if(((RCC_ClkInitStruct->ClockType) & RCC_CLOCKTYPE_PCLK2) == RCC_CLOCKTYPE_PCLK2)
+ {
+ assert_param(IS_RCC_PCLK(RCC_ClkInitStruct->APB2CLKDivider));
+ MODIFY_REG(RCC->CFGR, RCC_CFGR_PPRE2, ((RCC_ClkInitStruct->APB2CLKDivider) << 3));
+ }
+
+ /* Configure the source of time base considering new system clocks settings*/
+ HAL_InitTick (TICK_INT_PRIORITY);
+
+ return HAL_OK;
+}
+/**
+ * @}
+ */
+
+#endif /* STM32F101x6 || STM32F101xB || STM32F101xE || (...) || STM32F105xC || STM32F107xC */
+
+#if defined(STM32F105xC) || defined(STM32F107xC)
+/** @addtogroup RCC_Exported_Functions_Group2
+ * @{
+ */
+
+/**
+ * @brief Returns the SYSCLK frequency
+ *
+ * @note The system frequency computed by this function is not the real
+ * frequency in the chip. It is calculated based on the predefined
+ * constant and the selected clock source:
+ * @note If SYSCLK source is HSI, function returns values based on HSI_VALUE(*)
+ * @note If SYSCLK source is HSE, function returns values based on HSE_VALUE
+ * divided by PREDIV factor(**)
+ * @note If SYSCLK source is PLL, function returns values based on HSE_VALUE
+ * divided by PREDIV factor(**) or HSI_VALUE(*) multiplied by the PLL factor.
+ * @note (*) HSI_VALUE is a constant defined in stm32f1xx_hal_conf.h file (default value
+ * 8 MHz).
+ * @note (**) HSE_VALUE is a constant defined in stm32f1xx_hal_conf.h file (default value
+ * 8 MHz), user has to ensure that HSE_VALUE is same as the real
+ * frequency of the crystal used. Otherwise, this function may
+ * have wrong result.
+ *
+ * @note The result of this function could be not correct when using fractional
+ * value for HSE crystal.
+ *
+ * @note This function can be used by the user application to compute the
+ * baudrate for the communication peripherals or configure other parameters.
+ *
+ * @note Each time SYSCLK changes, this function must be called to update the
+ * right SYSCLK value. Otherwise, any configuration based on this function will be incorrect.
+ *
+ *
+ * @retval SYSCLK frequency
+ */
+uint32_t HAL_RCC_GetSysClockFreq(void)
+{
+ 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};
+
+ uint32_t tmp_reg = 0, prediv1 = 0, pllclk = 0, pllmul = 0;
+ uint32_t sysclockfreq = 0;
+ uint32_t prediv2 = 0, pll2mul = 0;
+
+ tmp_reg = RCC->CFGR;
+
+ /* Get SYSCLK source -------------------------------------------------------*/
+ switch (tmp_reg & RCC_CFGR_SWS)
+ {
+ case RCC_CFGR_SWS_HSE: /* HSE used as system clock */
+ {
+ sysclockfreq = HSE_VALUE;
+ break;
+ }
+ case RCC_CFGR_SWS_PLL: /* PLL used as system clock */
+ {
+ pllmul = aPLLMULFactorTable[(uint32_t)(tmp_reg & RCC_CFGR_PLLMULL) >> POSITION_VAL(RCC_CFGR_PLLMULL)];
+
+ if ((tmp_reg & RCC_CFGR_PLLSRC) != RCC_PLLSOURCE_HSI_DIV2)
+ {
+ prediv1 = aPredivFactorTable[(uint32_t)(RCC->CFGR2 & RCC_CFGR2_PREDIV1) >> POSITION_VAL(RCC_CFGR2_PREDIV1)];
+ 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
+ {
+ /* HSI used as PLL clock source : PLLCLK = HSI/2 * PLLMUL */
+ pllclk = (uint32_t)((HSI_VALUE >> 1) * pllmul);
+ }
+ sysclockfreq = pllclk;
+ break;
+ }
+ case RCC_CFGR_SWS_HSI: /* HSI used as system clock source */
+ default: /* HSI used as system clock */
+ {
+ sysclockfreq = HSI_VALUE;
+ break;
+ }
+ }
+ return sysclockfreq;
+}
+
+
+/**
+ * @brief Configures the RCC_OscInitStruct according to the internal
+ * RCC configuration registers.
+ * @param RCC_OscInitStruct: pointer to an RCC_OscInitTypeDef structure that
+ * will be configured.
+ * @retval None
+ */
+void HAL_RCC_GetOscConfig(RCC_OscInitTypeDef *RCC_OscInitStruct)
+{
+ /* Check the parameters */
+ assert_param(RCC_OscInitStruct != NULL);
+
+ /* Set all possible values for the Oscillator type parameter ---------------*/
+ RCC_OscInitStruct->OscillatorType = RCC_OSCILLATORTYPE_HSE | RCC_OSCILLATORTYPE_HSI \
+ | RCC_OSCILLATORTYPE_LSE | RCC_OSCILLATORTYPE_LSI;
+
+ /* Get the Prediv1 source --------------------------------------------------*/
+ RCC_OscInitStruct->Prediv1Source = READ_BIT(RCC->CFGR2,RCC_CFGR2_PREDIV1SRC);
+
+ /* Get the HSE configuration -----------------------------------------------*/
+ if((RCC->CR &RCC_CR_HSEBYP) == RCC_CR_HSEBYP)
+ {
+ RCC_OscInitStruct->HSEState = RCC_HSE_BYPASS;
+ }
+ else if((RCC->CR &RCC_CR_HSEON) == RCC_CR_HSEON)
+ {
+ RCC_OscInitStruct->HSEState = RCC_HSE_ON;
+ }
+ else
+ {
+ RCC_OscInitStruct->HSEState = RCC_HSE_OFF;
+ }
+
+ RCC_OscInitStruct->HSEPredivValue = __HAL_RCC_HSE_GET_PREDIV();
+
+ /* Get the HSI configuration -----------------------------------------------*/
+ if((RCC->CR &RCC_CR_HSION) == RCC_CR_HSION)
+ {
+ RCC_OscInitStruct->HSIState = RCC_HSI_ON;
+ }
+ else
+ {
+ RCC_OscInitStruct->HSIState = RCC_HSI_OFF;
+ }
+
+ RCC_OscInitStruct->HSICalibrationValue = (uint32_t)((RCC->CR & RCC_CR_HSITRIM) >> POSITION_VAL(RCC_CR_HSITRIM));
+
+ /* Get the LSE configuration -----------------------------------------------*/
+ if((RCC->BDCR &RCC_BDCR_LSEBYP) == RCC_BDCR_LSEBYP)
+ {
+ RCC_OscInitStruct->LSEState = RCC_LSE_BYPASS;
+ }
+ else if((RCC->BDCR &RCC_BDCR_LSEON) == RCC_BDCR_LSEON)
+ {
+ RCC_OscInitStruct->LSEState = RCC_LSE_ON;
+ }
+ else
+ {
+ RCC_OscInitStruct->LSEState = RCC_LSE_OFF;
+ }
+
+ /* Get the LSI configuration -----------------------------------------------*/
+ if((RCC->CSR &RCC_CSR_LSION) == RCC_CSR_LSION)
+ {
+ RCC_OscInitStruct->LSIState = RCC_LSI_ON;
+ }
+ else
+ {
+ RCC_OscInitStruct->LSIState = RCC_LSI_OFF;
+ }
+
+ /* Get the PLL configuration -----------------------------------------------*/
+ if((RCC->CR &RCC_CR_PLLON) == RCC_CR_PLLON)
+ {
+ RCC_OscInitStruct->PLL.PLLState = RCC_PLL_ON;
+ }
+ else
+ {
+ RCC_OscInitStruct->PLL.PLLState = RCC_PLL_OFF;
+ }
+ RCC_OscInitStruct->PLL.PLLSource = (uint32_t)(RCC->CFGR & RCC_CFGR_PLLSRC);
+ RCC_OscInitStruct->PLL.PLLMUL = (uint32_t)(RCC->CFGR & RCC_CFGR_PLLMULL);
+
+ /* Get the PLL2 configuration -----------------------------------------------*/
+ if((RCC->CR &RCC_CR_PLL2ON) == RCC_CR_PLL2ON)
+ {
+ RCC_OscInitStruct->PLL2.PLL2State = RCC_PLL2_ON;
+ }
+ else
+ {
+ RCC_OscInitStruct->PLL2.PLL2State = RCC_PLL2_OFF;
+ }
+ RCC_OscInitStruct->PLL2.HSEPrediv2Value = __HAL_RCC_HSE_GET_PREDIV2();
+ RCC_OscInitStruct->PLL2.PLL2MUL = (uint32_t)(RCC->CFGR2 & RCC_CFGR2_PLL2MUL);
+}
+
+/**
+ * @}
+ */
+
+#endif /* STM32F105xC || STM32F107xC*/
+
+#if defined (STM32F100xB) || defined (STM32F100xE)
+/** @addtogroup RCC_Exported_Functions_Group2
+ * @{
+ */
+
+/**
+ * @brief Returns the SYSCLK frequency
+ *
+ * @note The system frequency computed by this function is not the real
+ * frequency in the chip. It is calculated based on the predefined
+ * constant and the selected clock source:
+ * @note If SYSCLK source is HSI, function returns values based on HSI_VALUE(*)
+ * @note If SYSCLK source is HSE, function returns values based on HSE_VALUE
+ * divided by PREDIV factor(**)
+ * @note If SYSCLK source is PLL, function returns values based on HSE_VALUE
+ * divided by PREDIV factor(**) or HSI_VALUE(*) multiplied by the PLL factor.
+ * @note (*) HSI_VALUE is a constant defined in stm32f1xx.h file (default value
+ * 8 MHz).
+ * @note (**) HSE_VALUE is a constant defined in stm32f1xx_hal_conf.h file (default value
+ * 8 MHz), user has to ensure that HSE_VALUE is same as the real
+ * frequency of the crystal used. Otherwise, this function may
+ * have wrong result.
+ *
+ * @note The result of this function could be not correct when using fractional
+ * value for HSE crystal.
+ *
+ * @note This function can be used by the user application to compute the
+ * baudrate for the communication peripherals or configure other parameters.
+ *
+ * @note Each time SYSCLK changes, this function must be called to update the
+ * right SYSCLK value. Otherwise, any configuration based on this function will be incorrect.
+ *
+ *
+ * @retval SYSCLK frequency
+ */
+uint32_t HAL_RCC_GetSysClockFreq(void)
+{
+ 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[16] = { 1, 2, 3, 4, 5, 6, 7, 8, 9,10, 11, 12, 13, 14, 15, 16};
+ uint32_t tmp_reg = 0, prediv1 = 0, pllclk = 0, pllmul = 0;
+ uint32_t sysclockfreq = 0;
+
+ tmp_reg = RCC->CFGR;
+
+ /* Get SYSCLK source -------------------------------------------------------*/
+ switch (tmp_reg & RCC_CFGR_SWS)
+ {
+ case RCC_CFGR_SWS_HSE: /* HSE used as system clock */
+ {
+ sysclockfreq = HSE_VALUE;
+ break;
+ }
+ case RCC_CFGR_SWS_PLL: /* PLL used as system clock */
+ {
+ pllmul = aPLLMULFactorTable[(uint32_t)(tmp_reg & RCC_CFGR_PLLMULL) >> POSITION_VAL(RCC_CFGR_PLLMULL)];
+ if ((tmp_reg & RCC_CFGR_PLLSRC) != RCC_PLLSOURCE_HSI_DIV2)
+ {
+ prediv1 = aPredivFactorTable[(uint32_t)(RCC->CFGR2 & RCC_CFGR2_PREDIV1) >> POSITION_VAL(RCC_CFGR2_PREDIV1)];
+ /* HSE used as PLL clock source : PLLCLK = HSE/PREDIV1 * PLLMUL */
+ pllclk = (uint32_t)((HSE_VALUE / prediv1) * pllmul);
+ }
+ else
+ {
+ /* HSI used as PLL clock source : PLLCLK = HSI/2 * PLLMUL */
+ pllclk = (uint32_t)((HSI_VALUE >> 1) * pllmul);
+ }
+ sysclockfreq = pllclk;
+ break;
+ }
+ case RCC_CFGR_SWS_HSI: /* HSI used as system clock source */
+ default: /* HSI used as system clock */
+ {
+ sysclockfreq = HSI_VALUE;
+ break;
+ }
+ }
+ return sysclockfreq;
+}
+/**
+ * @}
+ */
+
+#endif /* STM32F100xB || STM32F100xE*/
+
+#if defined(STM32F101x6) || defined(STM32F101xB) || defined(STM32F101xE) || defined(STM32F101xG) || \
+ defined(STM32F102x6) || defined(STM32F102xB) || defined(STM32F103x6) || defined(STM32F103xB) || \
+ defined(STM32F103xE) || defined(STM32F103xG) || defined(STM32F105xC) || defined(STM32F107xC)
+/** @addtogroup RCC_Exported_Functions_Group2
+ * @{
+ */
+
+/**
+ * @brief Configures the RCC_ClkInitStruct according to the internal
+ * RCC configuration registers.
+ * @param RCC_ClkInitStruct: pointer to an RCC_ClkInitTypeDef structure that
+ * will be configured.
+ * @param pFLatency: Pointer on the Flash Latency.
+ * @retval None
+ */
+void HAL_RCC_GetClockConfig(RCC_ClkInitTypeDef *RCC_ClkInitStruct, uint32_t *pFLatency)
+{
+ /* Check the parameters */
+ assert_param(RCC_ClkInitStruct != NULL);
+ assert_param(pFLatency != NULL);
+
+ /* Set all possible values for the Clock type parameter --------------------*/
+ RCC_ClkInitStruct->ClockType = RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2;
+
+ /* Get the SYSCLK configuration --------------------------------------------*/
+ RCC_ClkInitStruct->SYSCLKSource = (uint32_t)(RCC->CFGR & RCC_CFGR_SW);
+
+ /* Get the HCLK configuration ----------------------------------------------*/
+ RCC_ClkInitStruct->AHBCLKDivider = (uint32_t)(RCC->CFGR & RCC_CFGR_HPRE);
+
+ /* Get the APB1 configuration ----------------------------------------------*/
+ RCC_ClkInitStruct->APB1CLKDivider = (uint32_t)(RCC->CFGR & RCC_CFGR_PPRE1);
+
+ /* Get the APB2 configuration ----------------------------------------------*/
+ RCC_ClkInitStruct->APB2CLKDivider = (uint32_t)((RCC->CFGR & RCC_CFGR_PPRE2) >> 3);
+
+ /* Get the Flash Wait State (Latency) configuration ------------------------*/
+ *pFLatency = (uint32_t)(FLASH->ACR & FLASH_ACR_LATENCY);
+}
+/**
+ * @}
+ */
+
+#endif /* STM32F101x6 || STM32F101xB || STM32F101xE || (...) || STM32F105xC || STM32F107xC */
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/** @addtogroup RCCEx
+ * @{
+ */
+
+/** @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) and RCC_BDCR register 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, tmp_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))
+ {
+ /* Enable Power Controller 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;
+ }
+ }
+
+ tmp_reg = (RCC->BDCR & RCC_BDCR_RTCSEL);
+ /* Reset the Backup domain only if the RTC Clock source selection is modified */
+ if((tmp_reg != (PeriphClkInit->RTCClockSelection & RCC_BDCR_RTCSEL)))
+ {
+ /* Store the content of BDCR register before the reset of Backup Domain */
+ tmp_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 = tmp_reg;
+ }
+
+ /* If LSE is selected as RTC clock source, wait for LSE reactivation */
+ if ((PeriphClkInit->RTCClockSelection == RCC_RTCCLKSOURCE_LSE))
+ {
+ /* 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 RCC_PERIPHCLK_RTC: RTC peripheral clock
+ * @arg RCC_PERIPHCLK_ADC: ADC peripheral clock
+ * @arg RCC_PERIPHCLK_I2S2: I2S2 peripheral clock (STM32F103xE, STM32F103xG, STM32F105xC & STM32F107xC)
+ * @arg RCC_PERIPHCLK_I2S3: I2S3 peripheral clock (STM32F103xE, STM32F103xG, STM32F105xC & STM32F107xC)
+ * @arg RCC_PERIPHCLK_USB: USB peripheral clock (STM32F102xx, STM32F103xx, STM32F105xC & STM32F107xC)
+ * @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 tmp_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 ------------------------------------------------------*/
+ tmp_reg = RCC->CFGR;
+
+ /* Check if PLL is enabled */
+ if (HAL_IS_BIT_SET(RCC->CR,RCC_CR_PLLON))
+ {
+ pllmul = aPLLMULFactorTable[(uint32_t)(tmp_reg & RCC_CFGR_PLLMULL) >> POSITION_VAL(RCC_CFGR_PLLMULL)];
+ if ((tmp_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 ((tmp_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_USBPLLCLK_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_USBPLLCLK_DIV1)
+ {
+ /* 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 ------------------------------------------------------*/
+ tmp_reg = RCC->BDCR;
+
+ /* Check if LSE is ready if RTC clock selection is LSE */
+ if (((tmp_reg & RCC_BDCR_RTCSEL) == RCC_RTCCLKSOURCE_LSE) && (HAL_IS_BIT_SET(tmp_reg, RCC_BDCR_LSERDY)))
+ {
+ frequency = LSE_VALUE;
+ }
+ /* Check if LSI is ready if RTC clock selection is LSI */
+ else if (((tmp_reg & RCC_BDCR_RTCSEL) == RCC_RTCCLKSOURCE_LSI) && (HAL_IS_BIT_SET(RCC->CSR, RCC_CSR_LSIRDY)))
+ {
+ frequency = LSI_VALUE;
+ }
+ else if (((tmp_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****/
+