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Diff: targets/cmsis/TARGET_STM/TARGET_NUCLEO_F091RC/stm32f0xx_hal_rcc_ex.c
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- 340:28d1f895c6fe
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/targets/cmsis/TARGET_STM/TARGET_NUCLEO_F091RC/stm32f0xx_hal_rcc_ex.c Thu Oct 09 08:15:07 2014 +0100 @@ -0,0 +1,1406 @@ +/** + ****************************************************************************** + * @file stm32f0xx_hal_rcc_ex.c + * @author MCD Application Team + * @version V1.1.0 + * @date 03-Oct-2014 + * @brief Extended RCC HAL module driver + * This file provides firmware functions to manage the following + * functionalities RCC extension peripheral: + * + Extended Clock Source configuration functions + * + @verbatim + ============================================================================== + ##### How to use this driver ##### + ============================================================================== + + For CRS, RCC Extention HAL driver can be used as follows: + + (#) In System clock config, HSI48 need to be enabled + + (#] Enable CRS clock in IP MSP init which will use CRS functions + + (#) Call CRS functions like this + (##) Prepare synchronization configuration necessary for HSI48 calibration + (+++) Default values can be set for frequency Error Measurement (reload and error limit) + and also HSI48 oscillator smooth trimming. + (+++) Macro __HAL_RCC_CRS_CALCULATE_RELOADVALUE can be also used to calculate + directly reload value with target and sychronization frequencies values + (##) Call function HAL_RCCEx_CRSConfig which + (+++) Reset CRS registers to their default values. + (+++) Configure CRS registers with synchronization configuration + (+++) Enable automatic calibration and frequency error counter feature + + (##) A polling function is provided to wait for complete Synchronization + (+++) Call function HAL_RCCEx_CRSWaitSynchronization() + (+++) According to CRS status, user can decide to adjust again the calibration or continue + application if synchronization is OK + + (#) User can retrieve information related to synchronization in calling function + HAL_RCCEx_CRSGetSynchronizationInfo() + + (#) Regarding synchronization status and synchronization information, user can try a new calibration + in changing synchronization configuration and call again HAL_RCCEx_CRSConfig. + Note: When the SYNC event is detected during the downcounting phase (before reaching the zero value), + it means that the actual frequency is lower than the target (and so, that the TRIM value should be + incremented), while when it is detected during the upcounting phase it means that the actual frequency + is higher (and that the TRIM value should be decremented). + + (#) To use IT mode, user needs to handle it in calling different macros available to do it + (__HAL_RCC_CRS_XXX_IT). Interuptions will go through RCC Handler (RCC_IRQn/RCC_CRS_IRQHandler) + (++) Call function HAL_RCCEx_CRSConfig() + (++) Enable RCC_IRQn (thnaks to NVIC functions) + (++) Enable CRS IT (__HAL_RCC_CRS_ENABLE_IT) + (++) Implement CRS status management in RCC_CRS_IRQHandler + + (#) To force a SYNC EVENT, user can use function HAL_RCCEx_CRSSoftwareSynchronizationGenerate(). Function can be + called before calling HAL_RCCEx_CRSConfig (for instance in Systick handler) + + @endverbatim + ****************************************************************************** + * @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 "stm32f0xx_hal.h" + +/** @addtogroup STM32F0xx_HAL_Driver + * @{ + */ + +/** @defgroup RCCEx RCCEx Extended HAL module driver + * @brief RCC Extension HAL module driver. + * @{ + */ + +#ifdef HAL_RCC_MODULE_ENABLED + +/* Private typedef -----------------------------------------------------------*/ +/* Private define ------------------------------------------------------------*/ +/** @defgroup RCCEx_Private_Define RCCEx Private Define + * @{ + */ +#define HSI48_TIMEOUT_VALUE ((uint32_t)100) /* 100 ms */ + +/* Bit position in register */ +#define CRS_CFGR_FELIM_BITNUMBER 16 +#define CRS_CR_TRIM_BITNUMBER 8 +#define CRS_ISR_FECAP_BITNUMBER 16 +/** + * @} + */ + +/* Private macro -------------------------------------------------------------*/ +/* Private variables ---------------------------------------------------------*/ +/** @defgroup RCCEx_Private_Variables RCCEx Private Variables + * @{ + */ +const uint8_t PLLMULFactorTable[16] = { 2, 3, 4, 5, 6, 7, 8, 9, + 10, 11, 12, 13, 14, 15, 16, 16}; +const uint8_t PredivFactorTable[16] = { 1, 2, 3, 4, 5, 6, 7, 8, + 9,10, 11, 12, 13, 14, 15, 16}; +/** + * @} + */ +/* Private function prototypes -----------------------------------------------*/ +/* Exported functions ---------------------------------------------------------*/ + +/** @defgroup RCCEx_Exported_Functions RCCEx Exported Functions + * @{ + */ + +/** @defgroup RCCEx_Exported_Functions_Group1 Extended Peripheral Control functions + * @brief Extended RCC clocks 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 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. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_RCC_OscConfig(RCC_OscInitTypeDef *RCC_OscInitStruct) +{ + uint32_t tickstart = 0; + + /* Check the parameters */ + 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)) + { + return HAL_ERROR; + } + } + else + { + /* Reset HSEON and HSEBYP bits before configuring the HSE --------------*/ + __HAL_RCC_HSE_CONFIG(RCC_HSE_OFF); + + /* Get timeout */ + 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; + } + } + + /* Set the new HSE configuration ---------------------------------------*/ + __HAL_RCC_HSE_CONFIG((uint8_t)RCC_OscInitStruct->HSEState); + + /* Check the HSE State */ + if(RCC_OscInitStruct->HSEState != RCC_HSE_OFF) + { + /* Get timeout */ + 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 timeout */ + 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; + } + } + } + } + } + /*----------------------------- 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))) + { + /* When the HSI is used as system clock it is not allowed to be 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(); + + 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 timeout */ + 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; + } + } + } + } + } + /*------------------------------ 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 timeout */ + 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; + } + } + } + else + { + /* Disable the Internal Low Speed oscillator (LSI). */ + __HAL_RCC_LSI_DISABLE(); + + /* Get timeout */ + 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; + } + } + } + } + /*------------------------------ 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 */ + __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) > DBP_TIMEOUT_VALUE) + { + return HAL_TIMEOUT; + } + } + + /* Reset LSEON and LSEBYP bits before configuring the LSE ----------------*/ + __HAL_RCC_LSE_CONFIG(RCC_LSE_OFF); + + /* Get timeout */ + tickstart = HAL_GetTick(); + + /* Wait till LSE is ready */ + while(__HAL_RCC_GET_FLAG(RCC_FLAG_LSERDY) != RESET) + { + if((HAL_GetTick() - tickstart) > 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 timeout */ + tickstart = HAL_GetTick(); + + /* Wait till LSE is ready */ + while(__HAL_RCC_GET_FLAG(RCC_FLAG_LSERDY) == RESET) + { + if((HAL_GetTick() - tickstart) > LSE_TIMEOUT_VALUE) + { + return HAL_TIMEOUT; + } + } + } + else + { + /* Get timeout */ + tickstart = HAL_GetTick(); + + /* Wait till LSE is ready */ + while(__HAL_RCC_GET_FLAG(RCC_FLAG_LSERDY) != RESET) + { + if((HAL_GetTick() - tickstart) > LSE_TIMEOUT_VALUE) + { + return HAL_TIMEOUT; + } + } + } + } + + /*----------------------------- HSI14 Configuration --------------------------*/ + if(((RCC_OscInitStruct->OscillatorType) & RCC_OSCILLATORTYPE_HSI14) == RCC_OSCILLATORTYPE_HSI14) + { + /* Check the parameters */ + assert_param(IS_RCC_HSI14(RCC_OscInitStruct->HSI14State)); + assert_param(IS_RCC_CALIBRATION_VALUE(RCC_OscInitStruct->HSI14CalibrationValue)); + + /* Check the HSI14 State */ + if(RCC_OscInitStruct->HSI14State == RCC_HSI14_ON) + { + /* Disable ADC control of the Internal High Speed oscillator HSI14 */ + __HAL_RCC_HSI14ADC_DISABLE(); + + /* Enable the Internal High Speed oscillator (HSI). */ + __HAL_RCC_HSI14_ENABLE(); + + /* Get timeout */ + tickstart = HAL_GetTick(); + + /* Wait till HSI is ready */ + while(__HAL_RCC_GET_FLAG(RCC_FLAG_HSI14RDY) == RESET) + { + if((HAL_GetTick() - tickstart) > HSI14_TIMEOUT_VALUE) + { + return HAL_TIMEOUT; + } + } + + /* Adjusts the Internal High Speed oscillator 14Mhz (HSI14) calibration value. */ + __HAL_RCC_HSI14_CALIBRATIONVALUE_ADJUST(RCC_OscInitStruct->HSI14CalibrationValue); + } + else if(RCC_OscInitStruct->HSI14State == RCC_HSI14_ADC_CONTROL) + { + /* Enable ADC control of the Internal High Speed oscillator HSI14 */ + __HAL_RCC_HSI14ADC_ENABLE(); + + /* Adjusts the Internal High Speed oscillator 14Mhz (HSI14) calibration value. */ + __HAL_RCC_HSI14_CALIBRATIONVALUE_ADJUST(RCC_OscInitStruct->HSI14CalibrationValue); + } + else + { + /* Disable ADC control of the Internal High Speed oscillator HSI14 */ + __HAL_RCC_HSI14ADC_DISABLE(); + + /* Disable the Internal High Speed oscillator (HSI). */ + __HAL_RCC_HSI14_DISABLE(); + + /* Get timeout */ + tickstart = HAL_GetTick(); + + /* Wait till HSI is ready */ + while(__HAL_RCC_GET_FLAG(RCC_FLAG_HSI14RDY) != RESET) + { + if((HAL_GetTick() - tickstart) > HSI14_TIMEOUT_VALUE) + { + return HAL_TIMEOUT; + } + } + } + } + +#if defined(STM32F042x6) || defined(STM32F048xx) || defined(STM32F072xB) || defined(STM32F078xx) || \ + defined(STM32F091xC) || defined(STM32F098xx) + /*----------------------------- HSI48 Configuration --------------------------*/ + if(((RCC_OscInitStruct->OscillatorType) & RCC_OSCILLATORTYPE_HSI48) == RCC_OSCILLATORTYPE_HSI48) + { + /* Check the parameters */ + assert_param(IS_RCC_HSI48(RCC_OscInitStruct->HSI48State)); + + /* When the HSI48 is used as system clock it is not allowed to be disabled */ + if((__HAL_RCC_GET_SYSCLK_SOURCE() == RCC_SYSCLKSOURCE_STATUS_HSI48) || + ((__HAL_RCC_GET_SYSCLK_SOURCE() == RCC_SYSCLKSOURCE_STATUS_PLLCLK) && (__HAL_RCC_GET_PLL_OSCSOURCE() == RCC_PLLSOURCE_HSI48))) + { + if((__HAL_RCC_GET_FLAG(RCC_FLAG_HSI48RDY) != RESET) && (RCC_OscInitStruct->HSI48State != RCC_HSI48_ON)) + { + return HAL_ERROR; + } + } + else + { + /* Check the HSI State */ + if(RCC_OscInitStruct->HSI48State != RCC_HSI48_OFF) + { + /* Enable the Internal High Speed oscillator (HSI48). */ + __HAL_RCC_HSI48_ENABLE(); + + /* Get timeout */ + tickstart = HAL_GetTick(); + + /* Wait till HSI is ready */ + while(__HAL_RCC_GET_FLAG(RCC_FLAG_HSI48RDY) == RESET) + { + if((HAL_GetTick() - tickstart) > HSI48_TIMEOUT_VALUE) + { + return HAL_TIMEOUT; + } + } + } + else + { + /* Disable the Internal High Speed oscillator (HSI48). */ + __HAL_RCC_HSI48_DISABLE(); + + /* Get timeout */ + tickstart = HAL_GetTick(); + + /* Wait till HSI is ready */ + while(__HAL_RCC_GET_FLAG(RCC_FLAG_HSI48RDY) != RESET) + { + if((HAL_GetTick() - tickstart) > HSI48_TIMEOUT_VALUE) + { + return HAL_TIMEOUT; + } + } + } + } + } +#endif /* STM32F042x6 || STM32F048xx || STM32F072xB || STM32F078xx || */ + /* STM32F091xC || STM32F098xx */ + + /*-------------------------------- 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_PREDIV(RCC_OscInitStruct->PLL.PREDIV)); + assert_param(IS_RCC_PLL_MUL(RCC_OscInitStruct->PLL.PLLMUL)); + + /* Disable the main PLL. */ + __HAL_RCC_PLL_DISABLE(); + + /* Get timeout */ + 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; + } + } + + /* Configure the main PLL clock source, predivider and multiplication factor. */ + __HAL_RCC_PLL_CONFIG(RCC_OscInitStruct->PLL.PLLSource, + RCC_OscInitStruct->PLL.PREDIV, + RCC_OscInitStruct->PLL.PLLMUL); + + /* Enable the main PLL. */ + __HAL_RCC_PLL_ENABLE(); + + /* Get timeout */ + 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 timeout */ + 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 + { + return HAL_ERROR; + } + } + return HAL_OK; +} + +/** + * @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 + * @arg FLASH_LATENCY_1: FLASH 1 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. + * @retval None + */ +HAL_StatusTypeDef HAL_RCC_ClockConfig(RCC_ClkInitTypeDef *RCC_ClkInitStruct, uint32_t FLatency) +{ + uint32_t tickstart = 0; + + /* Check the parameters */ + 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_SYSCLK_DIV(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; + } + } +#if defined(STM32F042x6) || defined(STM32F048xx) || defined(STM32F072xB) || defined(STM32F078xx) || \ + defined(STM32F091xC) || defined(STM32F098xx) + /* HSI48 is selected as System Clock Source */ + else if(RCC_ClkInitStruct->SYSCLKSource == RCC_SYSCLKSOURCE_HSI48) + { + /* Check the HSI48 ready flag */ + if(__HAL_RCC_GET_FLAG(RCC_FLAG_HSI48RDY) == RESET) + { + return HAL_ERROR; + } + } +#endif /* STM32F042x6 || STM32F048xx || STM32F072xB || STM32F078xx || */ + /* STM32F091xC || STM32F098xx */ + /* 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 timeout */ + 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; + } + } + } +#if defined(STM32F042x6) || defined(STM32F048xx) || defined(STM32F072xB) || defined(STM32F078xx) || \ + defined(STM32F091xC) || defined(STM32F098xx) + else if(RCC_ClkInitStruct->SYSCLKSource == RCC_SYSCLKSOURCE_HSI48) + { + while (__HAL_RCC_GET_SYSCLK_SOURCE() != RCC_SYSCLKSOURCE_STATUS_HSI48) + { + if((HAL_GetTick() - tickstart) > CLOCKSWITCH_TIMEOUT_VALUE) + { + return HAL_TIMEOUT; + } + } + } +#endif /* STM32F042x6 || STM32F048xx || STM32F072xB || STM32F078xx || */ + /* STM32F091xC || STM32F098xx */ + 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_SYSCLK_DIV(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; + } + } +#if defined(STM32F042x6) || defined(STM32F048xx) || defined(STM32F072xB) || defined(STM32F078xx) || \ + defined(STM32F091xC) || defined(STM32F098xx) + /* HSI48 is selected as System Clock Source */ + else if(RCC_ClkInitStruct->SYSCLKSource == RCC_SYSCLKSOURCE_HSI48) + { + /* Check the HSI48 ready flag */ + if(__HAL_RCC_GET_FLAG(RCC_FLAG_HSI48RDY) == RESET) + { + return HAL_ERROR; + } + } +#endif /* STM32F042x6 || STM32F048xx || STM32F072xB || STM32F078xx || */ + /* STM32F091xC || STM32F098xx */ + /* 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 timeout */ + 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; + } + } + } +#if defined(STM32F042x6) || defined(STM32F048xx) || defined(STM32F072xB) || defined(STM32F078xx) || \ + defined(STM32F091xC) || defined(STM32F098xx) + else if(RCC_ClkInitStruct->SYSCLKSource == RCC_SYSCLKSOURCE_HSI48) + { + while (__HAL_RCC_GET_SYSCLK_SOURCE() != RCC_SYSCLKSOURCE_STATUS_HSI48) + { + if((HAL_GetTick() - tickstart) > CLOCKSWITCH_TIMEOUT_VALUE) + { + return HAL_TIMEOUT; + } + } + } +#endif /* STM32F042x6 || STM32F048xx || STM32F072xB || STM32F078xx || */ + /* STM32F091xC || STM32F098xx */ + 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_HCLK_DIV(RCC_ClkInitStruct->APB1CLKDivider)); + MODIFY_REG(RCC->CFGR, RCC_CFGR_PPRE, RCC_ClkInitStruct->APB1CLKDivider); + } + + /* Configure the source of time base considering new system clocks settings*/ + HAL_InitTick (TICK_INT_PRIORITY); + + return HAL_OK; +} + +/** + * @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 a value based on HSI_VALUE(*) + * @note If SYSCLK source is HSI48, function returns a value based on HSI48_VALUE(*) + * @note If SYSCLK source is HSE, function returns a value based on HSE_VALUE + * divided by PREDIV factor(**) + * @note If SYSCLK source is PLL, function returns a value based on HSE_VALUE + * divided by PREDIV factor(**) or depending on STM32F0xx devices either a value based + * on HSI_VALUE divided by 2 or HSI_VALUE divided by PREDIV factor(*) multiplied by the + * PLL factor . + * @note (*) HSI_VALUE & HSI48_VALUE are constants defined in stm32f0xx_hal_conf.h file + * (default values 8 MHz and 48MHz). + * @note (**) HSE_VALUE is a constant defined in stm32f0xx_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) +{ + uint32_t tmpreg = 0, prediv = 0, pllmul = 0, pllclk = 0; + uint32_t sysclockfreq = 0; + + tmpreg = RCC->CFGR; + + /* Get SYSCLK source -------------------------------------------------------*/ + switch (tmpreg & RCC_CFGR_SWS) + { + case RCC_SYSCLKSOURCE_STATUS_HSE: /* HSE used as system clock source */ + sysclockfreq = HSE_VALUE; + break; + + case RCC_SYSCLKSOURCE_STATUS_PLLCLK: /* PLL used as system clock source */ + pllmul = PLLMULFactorTable[(uint32_t)(tmpreg & RCC_CFGR_PLLMUL) >> RCC_CFGR_PLLMUL_BITNUMBER]; + prediv = PredivFactorTable[(uint32_t)(RCC->CFGR2 & RCC_CFGR2_PREDIV) >> RCC_CFGR2_PREDIV_BITNUMBER]; + if ((tmpreg & RCC_CFGR_PLLSRC) == RCC_PLLSOURCE_HSE) + { + /* HSE used as PLL clock source : PLLCLK = HSE/PREDIV * PLLMUL */ + pllclk = (HSE_VALUE/prediv) * pllmul; + } +#if defined(STM32F042x6) || defined(STM32F048xx) || defined(STM32F072xB) || defined(STM32F078xx) || \ + defined(STM32F091xC) || defined(STM32F098xx) + else if ((tmpreg & RCC_CFGR_PLLSRC) == RCC_PLLSOURCE_HSI48) + { + /* HSI48 used as PLL clock source : PLLCLK = HSI48/PREDIV * PLLMUL */ + pllclk = (HSI48_VALUE/prediv) * pllmul; + } +#endif /* STM32F042x6 || STM32F048xx || STM32F072xB || STM32F078xx || */ + /* STM32F091xC || STM32F098xx */ + else + { +#if defined(STM32F042x6) || defined(STM32F048xx) || \ + defined(STM32F071xB) || defined(STM32F072xB) || defined(STM32F078xx) || \ + defined(STM32F091xC) || defined(STM32F098xx) + /* HSI used as PLL clock source : PLLCLK = HSI/PREDIV * PLLMUL */ + pllclk = (HSI_VALUE/prediv) * pllmul; +#else + /* HSI used as PLL clock source : PLLCLK = HSI/2 * PLLMUL */ + pllclk = (HSI_VALUE >> 1) * pllmul; +#endif /* STM32F042x6 || STM32F048xx || STM32F071xB || STM32F072xB || STM32F078xx || */ + /* STM32F091xC || STM32F098xx */ + } + sysclockfreq = pllclk; + break; + +#if defined(STM32F042x6) || defined(STM32F048xx) || defined(STM32F072xB) || defined(STM32F078xx) || \ + defined(STM32F091xC) || defined(STM32F098xx) + case RCC_SYSCLKSOURCE_STATUS_HSI48: /* HSI48 used as system clock source */ + sysclockfreq = HSI48_VALUE; + break; +#endif /* STM32F042x6 || STM32F048xx || STM32F072xB || STM32F078xx || */ + /* STM32F091xC || STM32F098xx */ + + case RCC_SYSCLKSOURCE_STATUS_HSI: /* HSI used as system clock source */ + default: + sysclockfreq = HSI_VALUE; + break; + } + return sysclockfreq; +} + +/** + * @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 + * (USART, RTC, I2C, CEC and USB). + * + * @note Care must be taken when HAL_RCCEx_PeriphCLKConfig() is used to select + * the RTC clock source; in this case the Backup domain will be reset in + * order to modify the RTC Clock source, as consequence RTC registers (including + * the backup registers) and RCC_BDCR register are set to their reset values. + * + * @retval None + */ +HAL_StatusTypeDef HAL_RCCEx_PeriphCLKConfig(RCC_PeriphCLKInitTypeDef *PeriphClkInit) +{ + uint32_t tickstart = 0; + uint32_t tmpreg = 0; + + /* Check the parameters */ + assert_param(IS_RCC_PERIPHCLK(PeriphClkInit->PeriphClockSelection)); + + /*---------------------------- RTC configuration -------------------------------*/ + if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_RTC) == (RCC_PERIPHCLK_RTC)) + { + /* Enable Power Clock*/ + __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) > DBP_TIMEOUT_VALUE) + { + return HAL_TIMEOUT; + } + } + + /* Reset the Backup domain only if the RTC Clock source selction is modified */ + if((RCC->BDCR & RCC_BDCR_RTCSEL) != (PeriphClkInit->RTCClockSelection & RCC_BDCR_RTCSEL)) + { + /* Store the content of BDCR register before the reset of Backup Domain */ + tmpreg = (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 = tmpreg; + } + + /* 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) > LSE_TIMEOUT_VALUE) + { + return HAL_TIMEOUT; + } + } + } + __HAL_RCC_RTC_CONFIG(PeriphClkInit->RTCClockSelection); + } + + /*------------------------------- USART1 Configuration ------------------------*/ + if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_USART1) == RCC_PERIPHCLK_USART1) + { + /* Check the parameters */ + assert_param(IS_RCC_USART1CLKSOURCE(PeriphClkInit->Usart1ClockSelection)); + + /* Configure the USART1 clock source */ + __HAL_RCC_USART1_CONFIG(PeriphClkInit->Usart1ClockSelection); + } + +#if defined(STM32F071xB) || defined(STM32F072xB) || defined(STM32F078xx) || \ + defined(STM32F091xC) || defined(STM32F098xx) + /*----------------------------- USART2 Configuration --------------------------*/ + if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_USART2) == RCC_PERIPHCLK_USART2) + { + /* Check the parameters */ + assert_param(IS_RCC_USART2CLKSOURCE(PeriphClkInit->Usart2ClockSelection)); + + /* Configure the USART2 clock source */ + __HAL_RCC_USART2_CONFIG(PeriphClkInit->Usart2ClockSelection); + } +#endif /* STM32F071xB || STM32F072xB || STM32F078xx || */ + /* STM32F091xC || STM32F098xx */ + +#if defined(STM32F091xC) || defined(STM32F098xx) + /*----------------------------- USART3 Configuration --------------------------*/ + if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_USART3) == RCC_PERIPHCLK_USART3) + { + /* Check the parameters */ + assert_param(IS_RCC_USART3CLKSOURCE(PeriphClkInit->Usart3ClockSelection)); + + /* Configure the USART3 clock source */ + __HAL_RCC_USART3_CONFIG(PeriphClkInit->Usart3ClockSelection); + } +#endif /* STM32F091xC || STM32F098xx */ + + /*------------------------------ I2C1 Configuration ------------------------*/ + if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_I2C1) == RCC_PERIPHCLK_I2C1) + { + /* Check the parameters */ + assert_param(IS_RCC_I2C1CLKSOURCE(PeriphClkInit->I2c1ClockSelection)); + + /* Configure the I2C1 clock source */ + __HAL_RCC_I2C1_CONFIG(PeriphClkInit->I2c1ClockSelection); + } + +#if defined(STM32F042x6) || defined(STM32F048xx) || defined(STM32F072xB) || defined(STM32F078xx) + /*------------------------------ USB Configuration ------------------------*/ + if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_USB) == RCC_PERIPHCLK_USB) + { + /* Check the parameters */ + assert_param(IS_RCC_USBCLKSOURCE(PeriphClkInit->UsbClockSelection)); + + /* Configure the USB clock source */ + __HAL_RCC_USB_CONFIG(PeriphClkInit->UsbClockSelection); + } +#endif /* STM32F042x6 || STM32F048xx || STM32F072xB || STM32F078xx */ + +#if defined(STM32F042x6) || defined(STM32F048xx) || \ + defined(STM32F051x8) || defined(STM32F058xx) || \ + defined(STM32F071xB) || defined(STM32F072xB) || defined(STM32F078xx) || \ + defined(STM32F091xC) || defined(STM32F098xx) + /*------------------------------ CEC clock Configuration -------------------*/ + if(((PeriphClkInit->PeriphClockSelection) & RCC_PERIPHCLK_CEC) == RCC_PERIPHCLK_CEC) + { + /* Check the parameters */ + assert_param(IS_RCC_CECCLKSOURCE(PeriphClkInit->CecClockSelection)); + + /* Configure the CEC clock source */ + __HAL_RCC_CEC_CONFIG(PeriphClkInit->CecClockSelection); + } +#endif /* STM32F042x6 || STM32F048xx || */ + /* STM32F051x8 || STM32F058xx || */ + /* STM32F071xB || STM32F072xB || STM32F078xx || */ + /* STM32F091xC || STM32F098xx */ + + return HAL_OK; +} + +/** + * @brief Get the RCC_ClkInitStruct according to the internal + * RCC configuration registers. + * @param PeriphClkInit: pointer to an RCC_PeriphCLKInitTypeDef structure that + * returns the configuration information for the Extended Peripherals clocks + * (USART, RTC, I2C, CEC and USB). + * @retval None + */ +void HAL_RCCEx_GetPeriphCLKConfig(RCC_PeriphCLKInitTypeDef *PeriphClkInit) +{ + /* Set all possible values for the extended clock type parameter------------*/ + /* Common part first */ + PeriphClkInit->PeriphClockSelection = RCC_PERIPHCLK_USART1 | RCC_PERIPHCLK_I2C1 | RCC_PERIPHCLK_RTC; + /* Get the RTC configuration --------------------------------------------*/ + PeriphClkInit->RTCClockSelection = __HAL_RCC_GET_RTC_SOURCE(); + /* Get the USART1 configuration --------------------------------------------*/ + PeriphClkInit->Usart1ClockSelection = __HAL_RCC_GET_USART1_SOURCE(); + /* Get the I2C1 clock source -----------------------------------------------*/ + PeriphClkInit->I2c1ClockSelection = __HAL_RCC_GET_I2C1_SOURCE(); + +#if defined(STM32F071xB) || defined(STM32F072xB) || defined(STM32F078xx) || \ + defined(STM32F091xC) || defined(STM32F098xx) + PeriphClkInit->PeriphClockSelection |= RCC_PERIPHCLK_USART2; + /* Get the USART2 clock source ---------------------------------------------*/ + PeriphClkInit->Usart2ClockSelection = __HAL_RCC_GET_USART2_SOURCE(); +#endif /* STM32F071xB || STM32F072xB || STM32F078xx || */ + /* STM32F091xC || STM32F098xx */ + +#if defined(STM32F091xC) || defined(STM32F098xx) + PeriphClkInit->PeriphClockSelection |= RCC_PERIPHCLK_USART3; + /* Get the USART3 clock source ---------------------------------------------*/ + PeriphClkInit->Usart3ClockSelection = __HAL_RCC_GET_USART3_SOURCE(); +#endif /* STM32F091xC || STM32F098xx */ + +#if defined(STM32F042x6) || defined(STM32F048xx) || defined(STM32F072xB) || defined(STM32F078xx) + PeriphClkInit->PeriphClockSelection |= RCC_PERIPHCLK_USB; + /* Get the USB clock source ---------------------------------------------*/ + PeriphClkInit->UsbClockSelection = __HAL_RCC_GET_USB_SOURCE(); +#endif /* STM32F042x6 || STM32F048xx || STM32F072xB || STM32F078xx */ + +#if defined(STM32F042x6) || defined(STM32F048xx) || \ + defined(STM32F051x8) || defined(STM32F058xx) || \ + defined(STM32F071xB) || defined(STM32F072xB) || defined(STM32F078xx) || \ + defined(STM32F091xC) || defined(STM32F098xx) + PeriphClkInit->PeriphClockSelection |= RCC_PERIPHCLK_CEC; + /* Get the CEC clock source ------------------------------------------------*/ + PeriphClkInit->CecClockSelection = __HAL_RCC_GET_CEC_SOURCE(); +#endif /* STM32F042x6 || STM32F048xx || */ + /* STM32F051x8 || STM32F058xx || */ + /* STM32F071xB || STM32F072xB || STM32F078xx || */ + /* STM32F091xC || STM32F098xx */ + +} + +#if defined(STM32F042x6) || defined(STM32F048xx) || \ + defined(STM32F071xB) || defined(STM32F072xB) || defined(STM32F078xx) || \ + defined(STM32F091xC) || defined(STM32F098xx) +/** + * @brief Start automatic synchronization using polling mode + * @param pInit Pointer on RCC_CRSInitTypeDef structure + * @retval None + */ +void HAL_RCCEx_CRSConfig(RCC_CRSInitTypeDef *pInit) +{ + /* Check the parameters */ + assert_param(IS_RCC_CRS_SYNC_DIV(pInit->Prescaler)); + assert_param(IS_RCC_CRS_SYNC_SOURCE(pInit->Source)); + assert_param(IS_RCC_CRS_SYNC_POLARITY(pInit->Polarity)); + assert_param(IS_RCC_CRS_RELOADVALUE(pInit->ReloadValue)); + assert_param(IS_RCC_CRS_ERRORLIMIT(pInit->ErrorLimitValue)); + assert_param(IS_RCC_CRS_HSI48CALIBRATION(pInit->HSI48CalibrationValue)); + + + /* CONFIGURATION */ + + /* Before configuration, reset CRS registers to their default values*/ + __CRS_FORCE_RESET(); + __CRS_RELEASE_RESET(); + + /* Configure Synchronization input */ + /* Clear SYNCDIV[2:0], SYNCSRC[1:0] & SYNCSPOL bits */ + CRS->CFGR &= ~(CRS_CFGR_SYNCDIV | CRS_CFGR_SYNCSRC | CRS_CFGR_SYNCPOL); + + /* Set the CRS_CFGR_SYNCDIV[2:0] bits according to Prescaler value */ + CRS->CFGR |= pInit->Prescaler; + + /* Set the SYNCSRC[1:0] bits according to Source value */ + CRS->CFGR |= pInit->Source; + + /* Set the SYNCSPOL bits according to Polarity value */ + CRS->CFGR |= pInit->Polarity; + + /* Configure Frequency Error Measurement */ + /* Clear RELOAD[15:0] & FELIM[7:0] bits*/ + CRS->CFGR &= ~(CRS_CFGR_RELOAD | CRS_CFGR_FELIM); + + /* Set the RELOAD[15:0] bits according to ReloadValue value */ + CRS->CFGR |= pInit->ReloadValue; + + /* Set the FELIM[7:0] bits according to ErrorLimitValue value */ + CRS->CFGR |= (pInit->ErrorLimitValue << CRS_CFGR_FELIM_BITNUMBER); + + /* Adjust HSI48 oscillator smooth trimming */ + /* Clear TRIM[5:0] bits */ + CRS->CR &= ~CRS_CR_TRIM; + + /* Set the TRIM[5:0] bits according to RCC_CRS_HSI48CalibrationValue value */ + CRS->CR |= (pInit->HSI48CalibrationValue << CRS_CR_TRIM_BITNUMBER); + + + /* START AUTOMATIC SYNCHRONIZATION*/ + + /* Enable Automatic trimming */ + __HAL_RCC_CRS_ENABLE_AUTOMATIC_CALIB(); + + /* Enable Frequency error counter */ + __HAL_RCC_CRS_ENABLE_FREQ_ERROR_COUNTER(); + +} + +/** + * @brief Generate the software synchronization event + * @retval None + */ +void HAL_RCCEx_CRSSoftwareSynchronizationGenerate(void) +{ + CRS->CR |= CRS_CR_SWSYNC; +} + + +/** + * @brief Function to return synchronization info + * @param pSynchroInfo Pointer on RCC_CRSSynchroInfoTypeDef structure + * @retval None + */ +void HAL_RCCEx_CRSGetSynchronizationInfo(RCC_CRSSynchroInfoTypeDef *pSynchroInfo) +{ + /* Check the parameter */ + assert_param(pSynchroInfo != HAL_NULL); + + /* Get the reload value */ + pSynchroInfo->ReloadValue = (uint32_t)(CRS->CFGR & CRS_CFGR_RELOAD); + + /* Get HSI48 oscillator smooth trimming */ + pSynchroInfo->HSI48CalibrationValue = (uint32_t)((CRS->CR & CRS_CR_TRIM) >> CRS_CR_TRIM_BITNUMBER); + + /* Get Frequency error capture */ + pSynchroInfo->FreqErrorCapture = (uint32_t)((CRS->ISR & CRS_ISR_FECAP) >> CRS_ISR_FECAP_BITNUMBER); + + /* Get FFrequency error direction */ + pSynchroInfo->FreqErrorDirection = (uint32_t)(CRS->ISR & CRS_ISR_FEDIR); + + +} + +/** +* @brief This function handles CRS Synchronization Timeout. +* @param Timeout: Duration of the timeout +* @note Timeout is based on the maximum time to receive a SYNC event based on synchronization +* frequency. +* @note If Timeout set to HAL_MAX_DELAY, HAL_TIMEOUT will be never returned. +* @retval Combination of Synchronization status +* This parameter can be a combination of the following values: +* @arg RCC_CRS_TIMEOUT +* @arg RCC_CRS_SYNCOK +* @arg RCC_CRS_SYNCWARM +* @arg RCC_CRS_SYNCERR +* @arg RCC_CRS_SYNCMISS +* @arg RCC_CRS_TRIMOV +*/ +RCC_CRSStatusTypeDef HAL_RCCEx_CRSWaitSynchronization(uint32_t Timeout) +{ + RCC_CRSStatusTypeDef crsstatus = RCC_CRS_NONE; + uint32_t tickstart = 0; + + /* Get timeout */ + tickstart = HAL_GetTick(); + + /* Check that if one of CRS flags have been set */ + while(RCC_CRS_NONE == crsstatus) + { + if(Timeout != HAL_MAX_DELAY) + { + if((Timeout == 0) || ((HAL_GetTick() - tickstart) > Timeout)) + { + crsstatus = RCC_CRS_TIMEOUT; + } + } + /* Check CRS SYNCOK flag */ + if(__HAL_RCC_CRS_GET_FLAG(RCC_CRS_FLAG_SYNCOK)) + { + /* CRS SYNC event OK */ + crsstatus |= RCC_CRS_SYNCOK; + + /* Clear CRS SYNC event OK bit */ + __HAL_RCC_CRS_CLEAR_FLAG(RCC_CRS_FLAG_SYNCOK); + } + + /* Check CRS SYNCWARN flag */ + if(__HAL_RCC_CRS_GET_FLAG(RCC_CRS_FLAG_SYNCWARN)) + { + /* CRS SYNC warning */ + crsstatus |= RCC_CRS_SYNCWARM; + + /* Clear CRS SYNCWARN bit */ + __HAL_RCC_CRS_CLEAR_FLAG(RCC_CRS_FLAG_SYNCWARN); + } + + /* Check CRS TRIM overflow flag */ + if(__HAL_RCC_CRS_GET_FLAG(RCC_CRS_FLAG_TRIMOVF)) + { + /* CRS SYNC Error */ + crsstatus |= RCC_CRS_TRIMOV; + + /* Clear CRS Error bit */ + __HAL_RCC_CRS_CLEAR_FLAG(RCC_CRS_FLAG_TRIMOVF); + } + + /* Check CRS Error flag */ + if(__HAL_RCC_CRS_GET_FLAG(RCC_CRS_FLAG_SYNCERR)) + { + /* CRS SYNC Error */ + crsstatus |= RCC_CRS_SYNCERR; + + /* Clear CRS Error bit */ + __HAL_RCC_CRS_CLEAR_FLAG(RCC_CRS_FLAG_SYNCERR); + } + + /* Check CRS SYNC Missed flag */ + if(__HAL_RCC_CRS_GET_FLAG(RCC_CRS_FLAG_SYNCMISS)) + { + /* CRS SYNC Missed */ + crsstatus |= RCC_CRS_SYNCMISS; + + /* Clear CRS SYNC Missed bit */ + __HAL_RCC_CRS_CLEAR_FLAG(RCC_CRS_FLAG_SYNCMISS); + } + + /* Check CRS Expected SYNC flag */ + if(__HAL_RCC_CRS_GET_FLAG(RCC_CRS_FLAG_ESYNC)) + { + /* frequency error counter reached a zero value */ + __HAL_RCC_CRS_CLEAR_FLAG(RCC_CRS_FLAG_ESYNC); + } + } + + return crsstatus; +} + +#endif /* STM32F042x6 || STM32F048xx || */ + /* STM32F071xB || STM32F072xB || STM32F078xx || */ + /* STM32F091xC || STM32F098xx */ + +/** + * @} + */ + +/** + * @} + */ + +#endif /* HAL_RCC_MODULE_ENABLED */ +/** + * @} + */ + +/** + * @} + */ + +/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/