diff options
Diffstat (limited to 'tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/cmsis/TARGET_STM/TARGET_STM32F1/stm32f1xx_hal_rcc_ex.c')
-rw-r--r-- | tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/cmsis/TARGET_STM/TARGET_STM32F1/stm32f1xx_hal_rcc_ex.c | 1946 |
1 files changed, 1946 insertions, 0 deletions
diff --git a/tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/cmsis/TARGET_STM/TARGET_STM32F1/stm32f1xx_hal_rcc_ex.c b/tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/cmsis/TARGET_STM/TARGET_STM32F1/stm32f1xx_hal_rcc_ex.c new file mode 100644 index 0000000000..ee3c51bfc7 --- /dev/null +++ b/tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/cmsis/TARGET_STM/TARGET_STM32F1/stm32f1xx_hal_rcc_ex.c @@ -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****/ + |