|
- /**
- ******************************************************************************
- * @file stm32f4xx_hal_rtc_ex.c
- * @author MCD Application Team
- * @brief Extended RTC HAL module driver.
- * This file provides firmware functions to manage the following
- * functionalities of the Real-Time Clock (RTC) Extended peripheral:
- * + RTC Timestamp functions
- * + RTC Tamper functions
- * + RTC Wakeup functions
- * + Extended Control functions
- * + Extended RTC features functions
- *
- ******************************************************************************
- * @attention
- *
- * Copyright (c) 2017 STMicroelectronics.
- * All rights reserved.
- *
- * This software is licensed under terms that can be found in the LICENSE file
- * in the root directory of this software component.
- * If no LICENSE file comes with this software, it is provided AS-IS.
- *
- ******************************************************************************
- @verbatim
- ==============================================================================
- ##### How to use this driver #####
- ==============================================================================
- [..]
- (+) Enable the RTC domain access.
- (+) Configure the RTC Prescaler (Asynchronous and Synchronous) and RTC hour
- format using the HAL_RTC_Init() function.
-
- *** RTC Wakeup configuration ***
- ================================
- [..]
- (+) To configure the RTC Wakeup Clock source and Counter use the
- HAL_RTCEx_SetWakeUpTimer() function.
- You can also configure the RTC Wakeup timer in interrupt mode using the
- HAL_RTCEx_SetWakeUpTimer_IT() function.
- (+) To read the RTC Wakeup Counter register, use the HAL_RTCEx_GetWakeUpTimer()
- function.
-
- *** Timestamp configuration ***
- ===============================
- [..]
- (+) To configure the RTC Timestamp use the HAL_RTCEx_SetTimeStamp() function.
- You can also configure the RTC Timestamp with interrupt mode using the
- HAL_RTCEx_SetTimeStamp_IT() function.
- (+) To read the RTC Timestamp Time and Date register, use the
- HAL_RTCEx_GetTimeStamp() function.
- (+) The Timestamp alternate function can be mapped either to RTC_AF1 (PC13)
- or RTC_AF2 (PI8) depending on the value of TSINSEL bit in RTC_TAFCR
- register.
- For STM32F446xx devices RTC_AF2 corresponds to pin PA0 and not to pin PI8.
- The corresponding pin is also selected by HAL_RTCEx_SetTimeStamp()
- or HAL_RTCEx_SetTimeStamp_IT() functions.
-
- *** Tamper configuration ***
- ============================
- [..]
- (+) To Enable the RTC Tamper and configure the Tamper filter count, trigger
- Edge or Level according to the Tamper filter value (if equal to 0 Edge
- else Level), sampling frequency, precharge or discharge and Pull-UP use
- the HAL_RTCEx_SetTamper() function.
- You can configure RTC Tamper in interrupt mode using HAL_RTCEx_SetTamper_IT()
- function.
- (+) The TAMPER1 alternate function can be mapped either to RTC_AF1 (PC13)
- or RTC_AF2 (PI8) depending on the value of TAMP1INSEL bit in RTC_TAFCR
- register.
- The corresponding pin is also selected by HAL_RTCEx_SetTamper()
- or HAL_RTCEx_SetTamper_IT() functions.
- (+) The TAMPER2 alternate function is mapped to RTC_AF2 (PI8).
- For STM32F446xx devices RTC_AF2 corresponds to pin PA0 and not to pin PI8.
-
- *** Backup Data Registers configuration ***
- ===========================================
- [..]
- (+) To write to the RTC Backup Data registers, use the HAL_RTCEx_BKUPWrite()
- function.
- (+) To read the RTC Backup Data registers, use the HAL_RTCEx_BKUPRead()
- function.
-
- *** Coarse Digital Calibration configuration ***
- ================================================
- [..]
- (+) The Coarse Digital Calibration can be used to compensate crystal inaccuracy
- by setting the DCS bit in RTC_CALIBR register.
- (+) When positive calibration is enabled (DCS = ‘0’), 2 asynchronous prescaler
- clock cycles are added every minute during 2xDC minutes.
- This causes the calendar to be updated sooner, thereby adjusting the
- effective RTC frequency to be a bit higher.
- (+) When negative calibration is enabled (DCS = ‘1’), 1 asynchronous prescaler
- clock cycle is removed every minute during 2xDC minutes.
- This causes the calendar to be updated later, thereby adjusting the
- effective RTC frequency to be a bit lower.
- (+) DC is configured through bits DC[4:0] of RTC_CALIBR register. This number
- ranges from 0 to 31 corresponding to a time interval (2xDC) ranging from
- 0 to 62.
- (+) In order to measure the clock deviation, a 512 Hz clock is output for
- calibration.
- (+) The RTC Coarse Digital Calibration value and sign can be calibrated using
- the HAL_RTCEx_SetCoarseCalib() function.
-
- *** Smooth Digital Calibration configuration ***
- ================================================
- [..]
- (+) RTC frequency can be digitally calibrated with a resolution of about
- 0.954 ppm with a range from -487.1 ppm to +488.5 ppm.
- The correction of the frequency is performed using a series of small
- adjustments (adding and/or subtracting individual RTCCLK pulses).
- (+) The smooth digital calibration is performed during a cycle of about 2^20
- RTCCLK pulses (or 32 seconds) when the input frequency is 32,768 Hz.
- This cycle is maintained by a 20-bit counter clocked by RTCCLK.
- (+) The smooth calibration register (RTC_CALR) specifies the number of RTCCLK
- clock cycles to be masked during the 32-second cycle.
- (+) The RTC Smooth Digital Calibration value and the corresponding calibration
- cycle period (32s, 16s, or 8s) can be calibrated using the
- HAL_RTCEx_SetSmoothCalib() function.
-
- @endverbatim
- ******************************************************************************
- */
-
- /* Includes ------------------------------------------------------------------*/
- #include "stm32f4xx_hal.h"
-
- /** @addtogroup STM32F4xx_HAL_Driver
- * @{
- */
-
- /** @defgroup RTCEx RTCEx
- * @brief RTC Extended HAL module driver
- * @{
- */
-
- #ifdef HAL_RTC_MODULE_ENABLED
-
- /* Private typedef -----------------------------------------------------------*/
- /* Private define ------------------------------------------------------------*/
- /* Private macro -------------------------------------------------------------*/
- /* Private variables ---------------------------------------------------------*/
- /* Private function prototypes -----------------------------------------------*/
- /* Exported functions --------------------------------------------------------*/
-
- /** @defgroup RTCEx_Exported_Functions RTCEx Exported Functions
- * @{
- */
-
- /** @defgroup RTCEx_Exported_Functions_Group1 RTC Timestamp and Tamper functions
- * @brief RTC Timestamp and Tamper functions
- *
- @verbatim
- ===============================================================================
- ##### RTC Timestamp and Tamper functions #####
- ===============================================================================
-
- [..] This section provides functions allowing to configure Timestamp feature
-
- @endverbatim
- * @{
- */
-
- /**
- * @brief Sets Timestamp.
- * @note This API must be called before enabling the Timestamp feature.
- * @param hrtc pointer to a RTC_HandleTypeDef structure that contains
- * the configuration information for RTC.
- * @param RTC_TimeStampEdge Specifies the pin edge on which the Timestamp is
- * activated.
- * This parameter can be one of the following values:
- * @arg RTC_TIMESTAMPEDGE_RISING: the Timestamp event occurs on
- * the rising edge of the related pin.
- * @arg RTC_TIMESTAMPEDGE_FALLING: the Timestamp event occurs on
- * the falling edge of the related pin.
- * @param RTC_TimeStampPin Specifies the RTC Timestamp Pin.
- * This parameter can be one of the following values:
- * @arg RTC_TIMESTAMPPIN_DEFAULT: PC13 is selected as RTC Timestamp Pin.
- * @arg RTC_TIMESTAMPPIN_POS1: PI8 is selected as RTC Timestamp Pin.
- * @note RTC_TIMESTAMPPIN_POS1 corresponds to pin PA0 in the case of
- * STM32F446xx devices.
- * @note RTC_TIMESTAMPPIN_POS1 is not applicable to the following list of devices:
- * STM32F412xx, STM32F413xx and STM32F423xx.
- * @retval HAL status
- */
- HAL_StatusTypeDef HAL_RTCEx_SetTimeStamp(RTC_HandleTypeDef *hrtc, uint32_t RTC_TimeStampEdge, uint32_t RTC_TimeStampPin)
- {
- uint32_t tmpreg = 0U;
-
- /* Check the parameters */
- assert_param(IS_TIMESTAMP_EDGE(RTC_TimeStampEdge));
- assert_param(IS_RTC_TIMESTAMP_PIN(RTC_TimeStampPin));
-
- /* Process Locked */
- __HAL_LOCK(hrtc);
-
- /* Change RTC state to BUSY */
- hrtc->State = HAL_RTC_STATE_BUSY;
-
- hrtc->Instance->TAFCR &= (uint32_t)~RTC_TAFCR_TSINSEL;
- hrtc->Instance->TAFCR |= (uint32_t)(RTC_TimeStampPin);
-
- /* Get the RTC_CR register and clear the bits to be configured */
- tmpreg = (uint32_t)(hrtc->Instance->CR & (uint32_t)~(RTC_CR_TSEDGE | RTC_CR_TSE));
-
- /* Configure the Timestamp TSEDGE bit */
- tmpreg |= RTC_TimeStampEdge;
-
- /* Disable the write protection for RTC registers */
- __HAL_RTC_WRITEPROTECTION_DISABLE(hrtc);
-
- /* Copy the desired configuration into the CR register */
- hrtc->Instance->CR = (uint32_t)tmpreg;
-
- /* Clear RTC Timestamp flag */
- __HAL_RTC_TIMESTAMP_CLEAR_FLAG(hrtc, RTC_FLAG_TSF);
-
- /* Clear RTC Timestamp overrun Flag */
- __HAL_RTC_TIMESTAMP_CLEAR_FLAG(hrtc, RTC_FLAG_TSOVF);
-
- /* Enable the Timestamp saving */
- __HAL_RTC_TIMESTAMP_ENABLE(hrtc);
-
- /* Enable the write protection for RTC registers */
- __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
-
- /* Change RTC state back to READY */
- hrtc->State = HAL_RTC_STATE_READY;
-
- /* Process Unlocked */
- __HAL_UNLOCK(hrtc);
-
- return HAL_OK;
- }
-
- /**
- * @brief Sets Timestamp with Interrupt.
- * @param hrtc pointer to a RTC_HandleTypeDef structure that contains
- * the configuration information for RTC.
- * @note This API must be called before enabling the Timestamp feature.
- * @param RTC_TimeStampEdge Specifies the pin edge on which the Timestamp is
- * activated.
- * This parameter can be one of the following values:
- * @arg RTC_TIMESTAMPEDGE_RISING: the Timestamp event occurs on
- * the rising edge of the related pin.
- * @arg RTC_TIMESTAMPEDGE_FALLING: the Timestamp event occurs on
- * the falling edge of the related pin.
- * @param RTC_TimeStampPin Specifies the RTC Timestamp Pin.
- * This parameter can be one of the following values:
- * @arg RTC_TIMESTAMPPIN_DEFAULT: PC13 is selected as RTC Timestamp Pin.
- * @arg RTC_TIMESTAMPPIN_POS1: PI8 is selected as RTC Timestamp Pin.
- * @note RTC_TIMESTAMPPIN_POS1 corresponds to pin PA0 in the case of
- * STM32F446xx devices.
- * @note RTC_TIMESTAMPPIN_POS1 is not applicable to the following list of devices:
- * STM32F412xx, STM32F413xx and STM32F423xx.
- * @retval HAL status
- */
- HAL_StatusTypeDef HAL_RTCEx_SetTimeStamp_IT(RTC_HandleTypeDef *hrtc, uint32_t RTC_TimeStampEdge, uint32_t RTC_TimeStampPin)
- {
- uint32_t tmpreg = 0U;
-
- /* Check the parameters */
- assert_param(IS_TIMESTAMP_EDGE(RTC_TimeStampEdge));
- assert_param(IS_RTC_TIMESTAMP_PIN(RTC_TimeStampPin));
-
- /* Process Locked */
- __HAL_LOCK(hrtc);
-
- /* Change RTC state to BUSY */
- hrtc->State = HAL_RTC_STATE_BUSY;
-
- hrtc->Instance->TAFCR &= (uint32_t)~RTC_TAFCR_TSINSEL;
- hrtc->Instance->TAFCR |= (uint32_t)(RTC_TimeStampPin);
-
- /* Get the RTC_CR register and clear the bits to be configured */
- tmpreg = (uint32_t)(hrtc->Instance->CR & (uint32_t)~(RTC_CR_TSEDGE | RTC_CR_TSE));
-
- /* Configure the Timestamp TSEDGE bit */
- tmpreg |= RTC_TimeStampEdge;
-
- /* Disable the write protection for RTC registers */
- __HAL_RTC_WRITEPROTECTION_DISABLE(hrtc);
-
- /* Copy the desired configuration into the CR register */
- hrtc->Instance->CR = (uint32_t)tmpreg;
-
- /* Clear RTC Timestamp flag */
- __HAL_RTC_TIMESTAMP_CLEAR_FLAG(hrtc, RTC_FLAG_TSF);
-
- /* Clear RTC Timestamp overrun Flag */
- __HAL_RTC_TIMESTAMP_CLEAR_FLAG(hrtc, RTC_FLAG_TSOVF);
-
- /* Enable the Timestamp saving */
- __HAL_RTC_TIMESTAMP_ENABLE(hrtc);
-
- /* Enable IT Timestamp */
- __HAL_RTC_TIMESTAMP_ENABLE_IT(hrtc, RTC_IT_TS);
-
- /* Enable the write protection for RTC registers */
- __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
-
- /* RTC Timestamp Interrupt Configuration: EXTI configuration */
- __HAL_RTC_TAMPER_TIMESTAMP_EXTI_ENABLE_IT();
- __HAL_RTC_TAMPER_TIMESTAMP_EXTI_ENABLE_RISING_EDGE();
-
- /* Change RTC state back to READY */
- hrtc->State = HAL_RTC_STATE_READY;
-
- /* Process Unlocked */
- __HAL_UNLOCK(hrtc);
-
- return HAL_OK;
- }
-
- /**
- * @brief Deactivates Timestamp.
- * @param hrtc pointer to a RTC_HandleTypeDef structure that contains
- * the configuration information for RTC.
- * @retval HAL status
- */
- HAL_StatusTypeDef HAL_RTCEx_DeactivateTimeStamp(RTC_HandleTypeDef *hrtc)
- {
- uint32_t tmpreg = 0U;
-
- /* Process Locked */
- __HAL_LOCK(hrtc);
-
- hrtc->State = HAL_RTC_STATE_BUSY;
-
- /* Disable the write protection for RTC registers */
- __HAL_RTC_WRITEPROTECTION_DISABLE(hrtc);
-
- /* In case of interrupt mode is used, the interrupt source must disabled */
- __HAL_RTC_TIMESTAMP_DISABLE_IT(hrtc, RTC_IT_TS);
-
- /* Get the RTC_CR register and clear the bits to be configured */
- tmpreg = (uint32_t)(hrtc->Instance->CR & (uint32_t)~(RTC_CR_TSEDGE | RTC_CR_TSE));
-
- /* Configure the Timestamp TSEDGE and Enable bits */
- hrtc->Instance->CR = (uint32_t)tmpreg;
-
- /* Enable the write protection for RTC registers */
- __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
-
- hrtc->State = HAL_RTC_STATE_READY;
-
- /* Process Unlocked */
- __HAL_UNLOCK(hrtc);
-
- return HAL_OK;
- }
-
- /**
- * @brief Gets the RTC Timestamp value.
- * @param hrtc pointer to a RTC_HandleTypeDef structure that contains
- * the configuration information for RTC.
- * @param sTimeStamp Pointer to Time structure
- * @param sTimeStampDate Pointer to Date structure
- * @param Format specifies the format of the entered parameters.
- * This parameter can be one of the following values:
- * @arg RTC_FORMAT_BIN: Binary data format
- * @arg RTC_FORMAT_BCD: BCD data format
- * @retval HAL status
- */
- HAL_StatusTypeDef HAL_RTCEx_GetTimeStamp(RTC_HandleTypeDef *hrtc, RTC_TimeTypeDef *sTimeStamp, RTC_DateTypeDef *sTimeStampDate, uint32_t Format)
- {
- uint32_t tmptime = 0U;
- uint32_t tmpdate = 0U;
-
- /* Check the parameters */
- assert_param(IS_RTC_FORMAT(Format));
-
- /* Get the Timestamp time and date registers values */
- tmptime = (uint32_t)(hrtc->Instance->TSTR & RTC_TR_RESERVED_MASK);
- tmpdate = (uint32_t)(hrtc->Instance->TSDR & RTC_DR_RESERVED_MASK);
-
- /* Fill the Time structure fields with the read parameters */
- sTimeStamp->Hours = (uint8_t)((tmptime & (RTC_TSTR_HT | RTC_TSTR_HU)) >> RTC_TSTR_HU_Pos);
- sTimeStamp->Minutes = (uint8_t)((tmptime & (RTC_TSTR_MNT | RTC_TSTR_MNU)) >> RTC_TSTR_MNU_Pos);
- sTimeStamp->Seconds = (uint8_t)((tmptime & (RTC_TSTR_ST | RTC_TSTR_SU)) >> RTC_TSTR_SU_Pos);
- sTimeStamp->TimeFormat = (uint8_t)((tmptime & (RTC_TSTR_PM)) >> RTC_TSTR_PM_Pos);
- sTimeStamp->SubSeconds = (uint32_t) hrtc->Instance->TSSSR;
-
- /* Fill the Date structure fields with the read parameters */
- sTimeStampDate->Year = 0U;
- sTimeStampDate->Month = (uint8_t)((tmpdate & (RTC_TSDR_MT | RTC_TSDR_MU)) >> RTC_TSDR_MU_Pos);
- sTimeStampDate->Date = (uint8_t)((tmpdate & (RTC_TSDR_DT | RTC_TSDR_DU)) >> RTC_TSDR_DU_Pos);
- sTimeStampDate->WeekDay = (uint8_t)((tmpdate & (RTC_TSDR_WDU)) >> RTC_TSDR_WDU_Pos);
-
- /* Check the input parameters format */
- if (Format == RTC_FORMAT_BIN)
- {
- /* Convert the Timestamp structure parameters to Binary format */
- sTimeStamp->Hours = (uint8_t)RTC_Bcd2ToByte(sTimeStamp->Hours);
- sTimeStamp->Minutes = (uint8_t)RTC_Bcd2ToByte(sTimeStamp->Minutes);
- sTimeStamp->Seconds = (uint8_t)RTC_Bcd2ToByte(sTimeStamp->Seconds);
-
- /* Convert the DateTimeStamp structure parameters to Binary format */
- sTimeStampDate->Month = (uint8_t)RTC_Bcd2ToByte(sTimeStampDate->Month);
- sTimeStampDate->Date = (uint8_t)RTC_Bcd2ToByte(sTimeStampDate->Date);
- sTimeStampDate->WeekDay = (uint8_t)RTC_Bcd2ToByte(sTimeStampDate->WeekDay);
- }
-
- /* Clear the Timestamp Flag */
- __HAL_RTC_TIMESTAMP_CLEAR_FLAG(hrtc, RTC_FLAG_TSF);
-
- return HAL_OK;
- }
-
- /**
- * @brief Sets Tamper.
- * @note By calling this API the tamper global interrupt will be disabled.
- * @param hrtc pointer to a RTC_HandleTypeDef structure that contains
- * the configuration information for RTC.
- * @param sTamper Pointer to Tamper Structure.
- * @retval HAL status
- */
- HAL_StatusTypeDef HAL_RTCEx_SetTamper(RTC_HandleTypeDef *hrtc, RTC_TamperTypeDef *sTamper)
- {
- uint32_t tmpreg = 0U;
-
- /* Check the parameters */
- assert_param(IS_RTC_TAMPER(sTamper->Tamper));
- assert_param(IS_RTC_TAMPER_PIN(sTamper->PinSelection));
- assert_param(IS_RTC_TAMPER_TRIGGER(sTamper->Trigger));
- assert_param(IS_RTC_TAMPER_FILTER(sTamper->Filter));
- assert_param(IS_RTC_TAMPER_FILTER_CONFIG_CORRECT(sTamper->Filter, sTamper->Trigger));
- assert_param(IS_RTC_TAMPER_SAMPLING_FREQ(sTamper->SamplingFrequency));
- assert_param(IS_RTC_TAMPER_PRECHARGE_DURATION(sTamper->PrechargeDuration));
- assert_param(IS_RTC_TAMPER_PULLUP_STATE(sTamper->TamperPullUp));
- assert_param(IS_RTC_TAMPER_TIMESTAMPONTAMPER_DETECTION(sTamper->TimeStampOnTamperDetection));
-
- /* Process Locked */
- __HAL_LOCK(hrtc);
-
- hrtc->State = HAL_RTC_STATE_BUSY;
-
- /* Copy control register into temporary variable */
- tmpreg = hrtc->Instance->TAFCR;
-
- /* Enable selected tamper */
- tmpreg |= (sTamper->Tamper);
-
- /* Configure the tamper trigger bit (this bit is just on the right of the
- tamper enable bit, hence the one-time right shift before updating it) */
- if (sTamper->Trigger == RTC_TAMPERTRIGGER_FALLINGEDGE)
- {
- /* Set the tamper trigger bit (case of falling edge or high level) */
- tmpreg |= (uint32_t)(sTamper->Tamper << 1U);
- }
- else
- {
- /* Clear the tamper trigger bit (case of rising edge or low level) */
- tmpreg &= (uint32_t)~(sTamper->Tamper << 1U);
- }
-
- /* Clear remaining fields before setting them */
- tmpreg &= ~(RTC_TAMPERFILTER_MASK | \
- RTC_TAMPERSAMPLINGFREQ_RTCCLK_MASK | \
- RTC_TAMPERPRECHARGEDURATION_MASK | \
- RTC_TAMPER_PULLUP_MASK | \
- RTC_TAFCR_TAMP1INSEL | \
- RTC_TIMESTAMPONTAMPERDETECTION_MASK);
-
- /* Set remaining parameters of desired configuration into temporary variable */
- tmpreg |= ((uint32_t)sTamper->Filter | \
- (uint32_t)sTamper->SamplingFrequency | \
- (uint32_t)sTamper->PrechargeDuration | \
- (uint32_t)sTamper->TamperPullUp | \
- (uint32_t)sTamper->PinSelection | \
- (uint32_t)sTamper->TimeStampOnTamperDetection);
-
- /* Disable tamper global interrupt in case it is enabled */
- tmpreg &= (uint32_t)~RTC_TAFCR_TAMPIE;
-
- /* Copy desired configuration into configuration register */
- hrtc->Instance->TAFCR = tmpreg;
-
- hrtc->State = HAL_RTC_STATE_READY;
-
- /* Process Unlocked */
- __HAL_UNLOCK(hrtc);
-
- return HAL_OK;
- }
-
- /**
- * @brief Sets Tamper with interrupt.
- * @note By calling this API the tamper global interrupt will be enabled.
- * @param hrtc pointer to a RTC_HandleTypeDef structure that contains
- * the configuration information for RTC.
- * @param sTamper Pointer to RTC Tamper.
- * @retval HAL status
- */
- HAL_StatusTypeDef HAL_RTCEx_SetTamper_IT(RTC_HandleTypeDef *hrtc, RTC_TamperTypeDef *sTamper)
- {
- uint32_t tmpreg = 0U;
-
- /* Check the parameters */
- assert_param(IS_RTC_TAMPER(sTamper->Tamper));
- assert_param(IS_RTC_TAMPER_PIN(sTamper->PinSelection));
- assert_param(IS_RTC_TAMPER_TRIGGER(sTamper->Trigger));
- assert_param(IS_RTC_TAMPER_FILTER(sTamper->Filter));
- assert_param(IS_RTC_TAMPER_FILTER_CONFIG_CORRECT(sTamper->Filter, sTamper->Trigger));
- assert_param(IS_RTC_TAMPER_SAMPLING_FREQ(sTamper->SamplingFrequency));
- assert_param(IS_RTC_TAMPER_PRECHARGE_DURATION(sTamper->PrechargeDuration));
- assert_param(IS_RTC_TAMPER_PULLUP_STATE(sTamper->TamperPullUp));
- assert_param(IS_RTC_TAMPER_TIMESTAMPONTAMPER_DETECTION(sTamper->TimeStampOnTamperDetection));
-
- /* Process Locked */
- __HAL_LOCK(hrtc);
-
- hrtc->State = HAL_RTC_STATE_BUSY;
-
- /* Copy control register into temporary variable */
- tmpreg = hrtc->Instance->TAFCR;
-
- /* Enable selected tamper */
- tmpreg |= (sTamper->Tamper);
-
- /* Configure the tamper trigger bit (this bit is just on the right of the
- tamper enable bit, hence the one-time right shift before updating it) */
- if (sTamper->Trigger == RTC_TAMPERTRIGGER_FALLINGEDGE)
- {
- /* Set the tamper trigger bit (case of falling edge or high level) */
- tmpreg |= (uint32_t)(sTamper->Tamper << 1U);
- }
- else
- {
- /* Clear the tamper trigger bit (case of rising edge or low level) */
- tmpreg &= (uint32_t)~(sTamper->Tamper << 1U);
- }
-
- /* Clear remaining fields before setting them */
- tmpreg &= ~(RTC_TAMPERFILTER_MASK | \
- RTC_TAMPERSAMPLINGFREQ_RTCCLK_MASK | \
- RTC_TAMPERPRECHARGEDURATION_MASK | \
- RTC_TAMPER_PULLUP_MASK | \
- RTC_TAFCR_TAMP1INSEL | \
- RTC_TIMESTAMPONTAMPERDETECTION_MASK);
-
- /* Set remaining parameters of desired configuration into temporary variable */
- tmpreg |= ((uint32_t)sTamper->Filter | \
- (uint32_t)sTamper->SamplingFrequency | \
- (uint32_t)sTamper->PrechargeDuration | \
- (uint32_t)sTamper->TamperPullUp | \
- (uint32_t)sTamper->PinSelection | \
- (uint32_t)sTamper->TimeStampOnTamperDetection);
-
- /* Enable global tamper interrupt */
- tmpreg |= (uint32_t)RTC_TAFCR_TAMPIE;
-
- /* Copy desired configuration into configuration register */
- hrtc->Instance->TAFCR = tmpreg;
-
- /* RTC Tamper Interrupt Configuration: EXTI configuration */
- __HAL_RTC_TAMPER_TIMESTAMP_EXTI_ENABLE_IT();
- __HAL_RTC_TAMPER_TIMESTAMP_EXTI_ENABLE_RISING_EDGE();
-
- hrtc->State = HAL_RTC_STATE_READY;
-
- /* Process Unlocked */
- __HAL_UNLOCK(hrtc);
-
- return HAL_OK;
- }
-
- /**
- * @brief Deactivates Tamper.
- * @note The tamper global interrupt bit will remain unchanged.
- * @param hrtc pointer to a RTC_HandleTypeDef structure that contains
- * the configuration information for RTC.
- * @param Tamper Selected tamper pin.
- * This parameter can be any combination of the following values:
- * @arg RTC_TAMPER_1: Tamper 1
- * @arg RTC_TAMPER_2: Tamper 2
- * @note RTC_TAMPER_2 is not applicable to all devices.
- * @retval HAL status
- */
- HAL_StatusTypeDef HAL_RTCEx_DeactivateTamper(RTC_HandleTypeDef *hrtc, uint32_t Tamper)
- {
- assert_param(IS_RTC_TAMPER(Tamper));
-
- /* Process Locked */
- __HAL_LOCK(hrtc);
-
- hrtc->State = HAL_RTC_STATE_BUSY;
-
- /* Disable the selected Tamper pin */
- hrtc->Instance->TAFCR &= (uint32_t)~Tamper;
-
- hrtc->State = HAL_RTC_STATE_READY;
-
- /* Process Unlocked */
- __HAL_UNLOCK(hrtc);
-
- return HAL_OK;
- }
-
- /**
- * @brief Handles Timestamp and Tamper interrupt request.
- * @param hrtc pointer to a RTC_HandleTypeDef structure that contains
- * the configuration information for RTC.
- * @retval None
- */
- void HAL_RTCEx_TamperTimeStampIRQHandler(RTC_HandleTypeDef *hrtc)
- {
- /* Get the Timestamp interrupt source enable status */
- if (__HAL_RTC_TIMESTAMP_GET_IT_SOURCE(hrtc, RTC_IT_TS) != 0U)
- {
- /* Get the pending status of the Timestamp Interrupt */
- if (__HAL_RTC_TIMESTAMP_GET_FLAG(hrtc, RTC_FLAG_TSF) != 0U)
- {
- /* Timestamp callback */
- #if (USE_HAL_RTC_REGISTER_CALLBACKS == 1)
- hrtc->TimeStampEventCallback(hrtc);
- #else
- HAL_RTCEx_TimeStampEventCallback(hrtc);
- #endif /* USE_HAL_RTC_REGISTER_CALLBACKS */
-
- /* Clear the Timestamp interrupt pending bit */
- __HAL_RTC_TIMESTAMP_CLEAR_FLAG(hrtc, RTC_FLAG_TSF);
- }
- }
-
- /* Get the Tamper 1 interrupt source enable status */
- if (__HAL_RTC_TAMPER_GET_IT_SOURCE(hrtc, RTC_IT_TAMP) != 0U)
- {
- /* Get the pending status of the Tamper 1 Interrupt */
- if (__HAL_RTC_TAMPER_GET_FLAG(hrtc, RTC_FLAG_TAMP1F) != 0U)
- {
- /* Tamper callback */
- #if (USE_HAL_RTC_REGISTER_CALLBACKS == 1)
- hrtc->Tamper1EventCallback(hrtc);
- #else
- HAL_RTCEx_Tamper1EventCallback(hrtc);
- #endif /* USE_HAL_RTC_REGISTER_CALLBACKS */
-
- /* Clear the Tamper interrupt pending bit */
- __HAL_RTC_TAMPER_CLEAR_FLAG(hrtc, RTC_FLAG_TAMP1F);
- }
- }
-
- #if defined(RTC_TAMPER2_SUPPORT)
- /* Get the Tamper 2 interrupt source enable status */
- if (__HAL_RTC_TAMPER_GET_IT_SOURCE(hrtc, RTC_IT_TAMP) != 0U)
- {
- /* Get the pending status of the Tamper 2 Interrupt */
- if (__HAL_RTC_TAMPER_GET_FLAG(hrtc, RTC_FLAG_TAMP2F) != 0U)
- {
- /* Tamper callback */
- #if (USE_HAL_RTC_REGISTER_CALLBACKS == 1)
- hrtc->Tamper2EventCallback(hrtc);
- #else
- HAL_RTCEx_Tamper2EventCallback(hrtc);
- #endif /* USE_HAL_RTC_REGISTER_CALLBACKS */
-
- /* Clear the Tamper interrupt pending bit */
- __HAL_RTC_TAMPER_CLEAR_FLAG(hrtc, RTC_FLAG_TAMP2F);
- }
- }
- #endif /* RTC_TAMPER2_SUPPORT */
-
- /* Clear the EXTI's Flag for RTC Timestamp and Tamper */
- __HAL_RTC_TAMPER_TIMESTAMP_EXTI_CLEAR_FLAG();
-
- /* Change RTC state */
- hrtc->State = HAL_RTC_STATE_READY;
- }
-
- /**
- * @brief Timestamp callback.
- * @param hrtc pointer to a RTC_HandleTypeDef structure that contains
- * the configuration information for RTC.
- * @retval None
- */
- __weak void HAL_RTCEx_TimeStampEventCallback(RTC_HandleTypeDef *hrtc)
- {
- /* Prevent unused argument(s) compilation warning */
- UNUSED(hrtc);
-
- /* NOTE: This function should not be modified, when the callback is needed,
- the HAL_RTCEx_TimeStampEventCallback could be implemented in the user file
- */
- }
-
- /**
- * @brief Tamper 1 callback.
- * @param hrtc pointer to a RTC_HandleTypeDef structure that contains
- * the configuration information for RTC.
- * @retval None
- */
- __weak void HAL_RTCEx_Tamper1EventCallback(RTC_HandleTypeDef *hrtc)
- {
- /* Prevent unused argument(s) compilation warning */
- UNUSED(hrtc);
-
- /* NOTE: This function should not be modified, when the callback is needed,
- the HAL_RTCEx_Tamper1EventCallback could be implemented in the user file
- */
- }
-
- #if defined(RTC_TAMPER2_SUPPORT)
- /**
- * @brief Tamper 2 callback.
- * @param hrtc pointer to a RTC_HandleTypeDef structure that contains
- * the configuration information for RTC.
- * @retval None
- */
- __weak void HAL_RTCEx_Tamper2EventCallback(RTC_HandleTypeDef *hrtc)
- {
- /* Prevent unused argument(s) compilation warning */
- UNUSED(hrtc);
-
- /* NOTE: This function should not be modified, when the callback is needed,
- the HAL_RTCEx_Tamper2EventCallback could be implemented in the user file
- */
- }
- #endif /* RTC_TAMPER2_SUPPORT */
-
- /**
- * @brief Handles Timestamp polling request.
- * @param hrtc pointer to a RTC_HandleTypeDef structure that contains
- * the configuration information for RTC.
- * @param Timeout Timeout duration
- * @retval HAL status
- */
- HAL_StatusTypeDef HAL_RTCEx_PollForTimeStampEvent(RTC_HandleTypeDef *hrtc, uint32_t Timeout)
- {
- uint32_t tickstart = 0U;
-
- /* Get tick */
- tickstart = HAL_GetTick();
-
- while (__HAL_RTC_TIMESTAMP_GET_FLAG(hrtc, RTC_FLAG_TSF) == 0U)
- {
- if (Timeout != HAL_MAX_DELAY)
- {
- if ((Timeout == 0U) || ((HAL_GetTick() - tickstart) > Timeout))
- {
- hrtc->State = HAL_RTC_STATE_TIMEOUT;
- return HAL_TIMEOUT;
- }
- }
-
- if (__HAL_RTC_TIMESTAMP_GET_FLAG(hrtc, RTC_FLAG_TSOVF) != 0U)
- {
- /* Clear the Timestamp Overrun Flag */
- __HAL_RTC_TIMESTAMP_CLEAR_FLAG(hrtc, RTC_FLAG_TSOVF);
-
- /* Change Timestamp state */
- hrtc->State = HAL_RTC_STATE_ERROR;
-
- return HAL_ERROR;
- }
- }
-
- /* Change RTC state */
- hrtc->State = HAL_RTC_STATE_READY;
-
- return HAL_OK;
- }
-
- /**
- * @brief Handles Tamper 1 Polling.
- * @param hrtc pointer to a RTC_HandleTypeDef structure that contains
- * the configuration information for RTC.
- * @param Timeout Timeout duration
- * @retval HAL status
- */
- HAL_StatusTypeDef HAL_RTCEx_PollForTamper1Event(RTC_HandleTypeDef *hrtc, uint32_t Timeout)
- {
- uint32_t tickstart = 0U;
-
- /* Get tick */
- tickstart = HAL_GetTick();
-
- /* Get the status of the Interrupt */
- while (__HAL_RTC_TAMPER_GET_FLAG(hrtc, RTC_FLAG_TAMP1F) == 0U)
- {
- if (Timeout != HAL_MAX_DELAY)
- {
- if ((Timeout == 0U) || ((HAL_GetTick() - tickstart) > Timeout))
- {
- hrtc->State = HAL_RTC_STATE_TIMEOUT;
- return HAL_TIMEOUT;
- }
- }
- }
-
- /* Clear the Tamper Flag */
- __HAL_RTC_TAMPER_CLEAR_FLAG(hrtc, RTC_FLAG_TAMP1F);
-
- /* Change RTC state */
- hrtc->State = HAL_RTC_STATE_READY;
-
- return HAL_OK;
- }
-
- #if defined(RTC_TAMPER2_SUPPORT)
- /**
- * @brief Handles Tamper 2 Polling.
- * @param hrtc pointer to a RTC_HandleTypeDef structure that contains
- * the configuration information for RTC.
- * @param Timeout Timeout duration
- * @retval HAL status
- */
- HAL_StatusTypeDef HAL_RTCEx_PollForTamper2Event(RTC_HandleTypeDef *hrtc, uint32_t Timeout)
- {
- uint32_t tickstart = 0U;
-
- /* Get tick */
- tickstart = HAL_GetTick();
-
- /* Get the status of the Interrupt */
- while (__HAL_RTC_TAMPER_GET_FLAG(hrtc, RTC_FLAG_TAMP2F) == 0U)
- {
- if (Timeout != HAL_MAX_DELAY)
- {
- if ((Timeout == 0U) || ((HAL_GetTick() - tickstart) > Timeout))
- {
- hrtc->State = HAL_RTC_STATE_TIMEOUT;
- return HAL_TIMEOUT;
- }
- }
- }
-
- /* Clear the Tamper Flag */
- __HAL_RTC_TAMPER_CLEAR_FLAG(hrtc, RTC_FLAG_TAMP2F);
-
- /* Change RTC state */
- hrtc->State = HAL_RTC_STATE_READY;
-
- return HAL_OK;
- }
- #endif /* RTC_TAMPER2_SUPPORT */
-
- /**
- * @}
- */
-
- /** @defgroup RTCEx_Exported_Functions_Group2 RTC Wakeup functions
- * @brief RTC Wakeup functions
- *
- @verbatim
- ===============================================================================
- ##### RTC Wakeup functions #####
- ===============================================================================
-
- [..] This section provides functions allowing to configure Wakeup feature
-
- @endverbatim
- * @{
- */
-
- /**
- * @brief Sets wakeup timer.
- * @param hrtc pointer to a RTC_HandleTypeDef structure that contains
- * the configuration information for RTC.
- * @param WakeUpCounter Wakeup counter
- * @param WakeUpClock Wakeup clock
- * @retval HAL status
- */
- HAL_StatusTypeDef HAL_RTCEx_SetWakeUpTimer(RTC_HandleTypeDef *hrtc, uint32_t WakeUpCounter, uint32_t WakeUpClock)
- {
- uint32_t tickstart = 0U;
-
- /* Check the parameters */
- assert_param(IS_RTC_WAKEUP_CLOCK(WakeUpClock));
- assert_param(IS_RTC_WAKEUP_COUNTER(WakeUpCounter));
-
- /* Process Locked */
- __HAL_LOCK(hrtc);
-
- hrtc->State = HAL_RTC_STATE_BUSY;
-
- /* Disable the write protection for RTC registers */
- __HAL_RTC_WRITEPROTECTION_DISABLE(hrtc);
-
- /* Check RTC WUTWF flag is reset only when wakeup timer enabled*/
- if ((hrtc->Instance->CR & RTC_CR_WUTE) != 0U)
- {
- tickstart = HAL_GetTick();
-
- /* Wait till RTC WUTWF flag is reset and if timeout is reached exit */
- while (__HAL_RTC_WAKEUPTIMER_GET_FLAG(hrtc, RTC_FLAG_WUTWF) != 0U)
- {
- if ((HAL_GetTick() - tickstart) > RTC_TIMEOUT_VALUE)
- {
- /* Enable the write protection for RTC registers */
- __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
-
- hrtc->State = HAL_RTC_STATE_TIMEOUT;
-
- /* Process Unlocked */
- __HAL_UNLOCK(hrtc);
-
- return HAL_TIMEOUT;
- }
- }
- }
-
- /* Disable the Wakeup timer */
- __HAL_RTC_WAKEUPTIMER_DISABLE(hrtc);
-
- /* Clear the Wakeup flag */
- __HAL_RTC_WAKEUPTIMER_CLEAR_FLAG(hrtc, RTC_FLAG_WUTF);
-
- /* Get tick */
- tickstart = HAL_GetTick();
-
- /* Wait till RTC WUTWF flag is set and if timeout is reached exit */
- while (__HAL_RTC_WAKEUPTIMER_GET_FLAG(hrtc, RTC_FLAG_WUTWF) == 0U)
- {
- if ((HAL_GetTick() - tickstart) > RTC_TIMEOUT_VALUE)
- {
- /* Enable the write protection for RTC registers */
- __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
-
- hrtc->State = HAL_RTC_STATE_TIMEOUT;
-
- /* Process Unlocked */
- __HAL_UNLOCK(hrtc);
-
- return HAL_TIMEOUT;
- }
- }
-
- /* Clear the Wakeup Timer clock source bits in CR register */
- hrtc->Instance->CR &= (uint32_t)~RTC_CR_WUCKSEL;
-
- /* Configure the clock source */
- hrtc->Instance->CR |= (uint32_t)WakeUpClock;
-
- /* Configure the Wakeup Timer counter */
- hrtc->Instance->WUTR = (uint32_t)WakeUpCounter;
-
- /* Enable the Wakeup Timer */
- __HAL_RTC_WAKEUPTIMER_ENABLE(hrtc);
-
- /* Enable the write protection for RTC registers */
- __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
-
- hrtc->State = HAL_RTC_STATE_READY;
-
- /* Process Unlocked */
- __HAL_UNLOCK(hrtc);
-
- return HAL_OK;
- }
-
- /**
- * @brief Sets wakeup timer with interrupt.
- * @param hrtc pointer to a RTC_HandleTypeDef structure that contains
- * the configuration information for RTC.
- * @param WakeUpCounter Wakeup counter
- * @param WakeUpClock Wakeup clock
- * @retval HAL status
- */
- HAL_StatusTypeDef HAL_RTCEx_SetWakeUpTimer_IT(RTC_HandleTypeDef *hrtc, uint32_t WakeUpCounter, uint32_t WakeUpClock)
- {
- __IO uint32_t count = RTC_TIMEOUT_VALUE * (SystemCoreClock / 32U / 1000U);
-
- /* Check the parameters */
- assert_param(IS_RTC_WAKEUP_CLOCK(WakeUpClock));
- assert_param(IS_RTC_WAKEUP_COUNTER(WakeUpCounter));
-
- /* Process Locked */
- __HAL_LOCK(hrtc);
-
- hrtc->State = HAL_RTC_STATE_BUSY;
-
- /* Disable the write protection for RTC registers */
- __HAL_RTC_WRITEPROTECTION_DISABLE(hrtc);
-
- /* Check RTC WUTWF flag is reset only when wakeup timer enabled */
- if ((hrtc->Instance->CR & RTC_CR_WUTE) != 0U)
- {
- /* Wait till RTC WUTWF flag is reset and if timeout is reached exit */
- do
- {
- if (count-- == 0U)
- {
- /* Enable the write protection for RTC registers */
- __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
-
- hrtc->State = HAL_RTC_STATE_TIMEOUT;
-
- /* Process Unlocked */
- __HAL_UNLOCK(hrtc);
-
- return HAL_TIMEOUT;
- }
- } while (__HAL_RTC_WAKEUPTIMER_GET_FLAG(hrtc, RTC_FLAG_WUTWF) != 0U);
- }
-
- /* Disable the Wakeup timer */
- __HAL_RTC_WAKEUPTIMER_DISABLE(hrtc);
-
- /* Clear the Wakeup flag */
- __HAL_RTC_WAKEUPTIMER_CLEAR_FLAG(hrtc, RTC_FLAG_WUTF);
-
- /* Reload the counter */
- count = RTC_TIMEOUT_VALUE * (SystemCoreClock / 32U / 1000U);
-
- /* Wait till RTC WUTWF flag is set and if timeout is reached exit */
- do
- {
- if (count-- == 0U)
- {
- /* Enable the write protection for RTC registers */
- __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
-
- hrtc->State = HAL_RTC_STATE_TIMEOUT;
-
- /* Process Unlocked */
- __HAL_UNLOCK(hrtc);
-
- return HAL_TIMEOUT;
- }
- } while (__HAL_RTC_WAKEUPTIMER_GET_FLAG(hrtc, RTC_FLAG_WUTWF) == 0U);
-
- /* Clear the Wakeup Timer clock source bits in CR register */
- hrtc->Instance->CR &= (uint32_t)~RTC_CR_WUCKSEL;
-
- /* Configure the clock source */
- hrtc->Instance->CR |= (uint32_t)WakeUpClock;
-
- /* Configure the Wakeup Timer counter */
- hrtc->Instance->WUTR = (uint32_t)WakeUpCounter;
-
- /* RTC wakeup timer Interrupt Configuration: EXTI configuration */
- __HAL_RTC_WAKEUPTIMER_EXTI_ENABLE_IT();
- __HAL_RTC_WAKEUPTIMER_EXTI_ENABLE_RISING_EDGE();
-
- /* Configure the interrupt in the RTC_CR register */
- __HAL_RTC_WAKEUPTIMER_ENABLE_IT(hrtc, RTC_IT_WUT);
-
- /* Enable the Wakeup Timer */
- __HAL_RTC_WAKEUPTIMER_ENABLE(hrtc);
-
- /* Enable the write protection for RTC registers */
- __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
-
- hrtc->State = HAL_RTC_STATE_READY;
-
- /* Process Unlocked */
- __HAL_UNLOCK(hrtc);
-
- return HAL_OK;
- }
-
- /**
- * @brief Deactivates wakeup timer counter.
- * @param hrtc pointer to a RTC_HandleTypeDef structure that contains
- * the configuration information for RTC.
- * @retval HAL status
- */
- HAL_StatusTypeDef HAL_RTCEx_DeactivateWakeUpTimer(RTC_HandleTypeDef *hrtc)
- {
- uint32_t tickstart = 0U;
-
- /* Process Locked */
- __HAL_LOCK(hrtc);
-
- hrtc->State = HAL_RTC_STATE_BUSY;
-
- /* Disable the write protection for RTC registers */
- __HAL_RTC_WRITEPROTECTION_DISABLE(hrtc);
-
- /* Disable the Wakeup Timer */
- __HAL_RTC_WAKEUPTIMER_DISABLE(hrtc);
-
- /* In case of interrupt mode is used, the interrupt source must disabled */
- __HAL_RTC_WAKEUPTIMER_DISABLE_IT(hrtc, RTC_IT_WUT);
-
- /* Get tick */
- tickstart = HAL_GetTick();
-
- /* Wait till RTC WUTWF flag is set and if timeout is reached exit */
- while (__HAL_RTC_WAKEUPTIMER_GET_FLAG(hrtc, RTC_FLAG_WUTWF) == 0U)
- {
- if ((HAL_GetTick() - tickstart) > RTC_TIMEOUT_VALUE)
- {
- /* Enable the write protection for RTC registers */
- __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
-
- hrtc->State = HAL_RTC_STATE_TIMEOUT;
-
- /* Process Unlocked */
- __HAL_UNLOCK(hrtc);
-
- return HAL_TIMEOUT;
- }
- }
-
- /* Enable the write protection for RTC registers */
- __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
-
- hrtc->State = HAL_RTC_STATE_READY;
-
- /* Process Unlocked */
- __HAL_UNLOCK(hrtc);
-
- return HAL_OK;
- }
-
- /**
- * @brief Gets wakeup timer counter.
- * @param hrtc pointer to a RTC_HandleTypeDef structure that contains
- * the configuration information for RTC.
- * @retval Counter value
- */
- uint32_t HAL_RTCEx_GetWakeUpTimer(RTC_HandleTypeDef *hrtc)
- {
- /* Get the counter value */
- return ((uint32_t)(hrtc->Instance->WUTR & RTC_WUTR_WUT));
- }
-
- /**
- * @brief Handles Wakeup Timer interrupt request.
- * @note Unlike alarm interrupt line (shared by Alarms A and B) or tamper
- * interrupt line (shared by timestamp and tampers) wakeup timer
- * interrupt line is exclusive to the wakeup timer.
- * There is no need in this case to check on the interrupt enable
- * status via __HAL_RTC_WAKEUPTIMER_GET_IT_SOURCE().
- * @param hrtc pointer to a RTC_HandleTypeDef structure that contains
- * the configuration information for RTC.
- * @retval None
- */
- void HAL_RTCEx_WakeUpTimerIRQHandler(RTC_HandleTypeDef *hrtc)
- {
- /* Get the pending status of the Wakeup timer Interrupt */
- if (__HAL_RTC_WAKEUPTIMER_GET_FLAG(hrtc, RTC_FLAG_WUTF) != 0U)
- {
- /* Wakeup timer callback */
- #if (USE_HAL_RTC_REGISTER_CALLBACKS == 1)
- hrtc->WakeUpTimerEventCallback(hrtc);
- #else
- HAL_RTCEx_WakeUpTimerEventCallback(hrtc);
- #endif /* USE_HAL_RTC_REGISTER_CALLBACKS */
-
- /* Clear the Wakeup timer interrupt pending bit */
- __HAL_RTC_WAKEUPTIMER_CLEAR_FLAG(hrtc, RTC_FLAG_WUTF);
- }
-
- /* Clear the EXTI's line Flag for RTC WakeUpTimer */
- __HAL_RTC_WAKEUPTIMER_EXTI_CLEAR_FLAG();
-
- /* Change RTC state */
- hrtc->State = HAL_RTC_STATE_READY;
- }
-
- /**
- * @brief Wakeup Timer callback.
- * @param hrtc pointer to a RTC_HandleTypeDef structure that contains
- * the configuration information for RTC.
- * @retval None
- */
- __weak void HAL_RTCEx_WakeUpTimerEventCallback(RTC_HandleTypeDef *hrtc)
- {
- /* Prevent unused argument(s) compilation warning */
- UNUSED(hrtc);
-
- /* NOTE: This function should not be modified, when the callback is needed,
- the HAL_RTCEx_WakeUpTimerEventCallback could be implemented in the user file
- */
- }
-
- /**
- * @brief Handles Wakeup Timer Polling.
- * @param hrtc pointer to a RTC_HandleTypeDef structure that contains
- * the configuration information for RTC.
- * @param Timeout Timeout duration
- * @retval HAL status
- */
- HAL_StatusTypeDef HAL_RTCEx_PollForWakeUpTimerEvent(RTC_HandleTypeDef *hrtc, uint32_t Timeout)
- {
- uint32_t tickstart = 0U;
-
- /* Get tick */
- tickstart = HAL_GetTick();
-
- while (__HAL_RTC_WAKEUPTIMER_GET_FLAG(hrtc, RTC_FLAG_WUTF) == 0U)
- {
- if (Timeout != HAL_MAX_DELAY)
- {
- if ((Timeout == 0U) || ((HAL_GetTick() - tickstart) > Timeout))
- {
- hrtc->State = HAL_RTC_STATE_TIMEOUT;
- return HAL_TIMEOUT;
- }
- }
- }
-
- /* Clear the Wakeup timer Flag */
- __HAL_RTC_WAKEUPTIMER_CLEAR_FLAG(hrtc, RTC_FLAG_WUTF);
-
- /* Change RTC state */
- hrtc->State = HAL_RTC_STATE_READY;
-
- return HAL_OK;
- }
-
- /**
- * @}
- */
-
- /** @defgroup RTCEx_Exported_Functions_Group3 Extended Peripheral Control functions
- * @brief Extended Peripheral Control functions
- *
- @verbatim
- ===============================================================================
- ##### Extended Peripheral Control functions #####
- ===============================================================================
- [..]
- This subsection provides functions allowing to
- (+) Write a data in a specified RTC Backup data register
- (+) Read a data in a specified RTC Backup data register
- (+) Set the Coarse calibration parameters.
- (+) Deactivate the Coarse calibration parameters
- (+) Set the Smooth calibration parameters.
- (+) Configure the Synchronization Shift Control Settings.
- (+) Configure the Calibration Pinout (RTC_CALIB) Selection (1Hz or 512Hz).
- (+) Deactivate the Calibration Pinout (RTC_CALIB) Selection (1Hz or 512Hz).
- (+) Enable the RTC reference clock detection.
- (+) Disable the RTC reference clock detection.
- (+) Enable the Bypass Shadow feature.
- (+) Disable the Bypass Shadow feature.
-
- @endverbatim
- * @{
- */
-
- /**
- * @brief Writes a data in a specified RTC Backup data register.
- * @param hrtc pointer to a RTC_HandleTypeDef structure that contains
- * the configuration information for RTC.
- * @param BackupRegister RTC Backup data Register number.
- * This parameter can be: RTC_BKP_DRx (where x can be from 0 to 19)
- * to specify the register.
- * @param Data Data to be written in the specified RTC Backup data register.
- * @retval None
- */
- void HAL_RTCEx_BKUPWrite(RTC_HandleTypeDef *hrtc, uint32_t BackupRegister, uint32_t Data)
- {
- uint32_t tmp = 0U;
-
- /* Check the parameters */
- assert_param(IS_RTC_BKP(BackupRegister));
-
- tmp = (uint32_t) & (hrtc->Instance->BKP0R);
- tmp += (BackupRegister * 4U);
-
- /* Write the specified register */
- *(__IO uint32_t *)tmp = (uint32_t)Data;
- }
-
- /**
- * @brief Reads data from the specified RTC Backup data Register.
- * @param hrtc pointer to a RTC_HandleTypeDef structure that contains
- * the configuration information for RTC.
- * @param BackupRegister RTC Backup data Register number.
- * This parameter can be: RTC_BKP_DRx (where x can be from 0 to 19)
- * to specify the register.
- * @retval Read value
- */
- uint32_t HAL_RTCEx_BKUPRead(RTC_HandleTypeDef *hrtc, uint32_t BackupRegister)
- {
- uint32_t tmp = 0U;
-
- /* Check the parameters */
- assert_param(IS_RTC_BKP(BackupRegister));
-
- tmp = (uint32_t) & (hrtc->Instance->BKP0R);
- tmp += (BackupRegister * 4U);
-
- /* Read the specified register */
- return (*(__IO uint32_t *)tmp);
- }
-
- /**
- * @brief Sets the Coarse calibration parameters.
- * @param hrtc pointer to a RTC_HandleTypeDef structure that contains
- * the configuration information for RTC.
- * @param CalibSign Specifies the sign of the coarse calibration value.
- * This parameter can be one of the following values:
- * @arg RTC_CALIBSIGN_POSITIVE: The value sign is positive
- * @arg RTC_CALIBSIGN_NEGATIVE: The value sign is negative
- * @param Value value of coarse calibration expressed in ppm (coded on 5 bits).
- *
- * @note This Calibration value should be between 0 and 63 when using negative
- * sign with a 2-ppm step.
- *
- * @note This Calibration value should be between 0 and 126 when using positive
- * sign with a 4-ppm step.
- * @retval HAL status
- */
- HAL_StatusTypeDef HAL_RTCEx_SetCoarseCalib(RTC_HandleTypeDef *hrtc, uint32_t CalibSign, uint32_t Value)
- {
- HAL_StatusTypeDef status;
-
- /* Check the parameters */
- assert_param(IS_RTC_CALIB_SIGN(CalibSign));
- assert_param(IS_RTC_CALIB_VALUE(Value));
-
- /* Process Locked */
- __HAL_LOCK(hrtc);
-
- hrtc->State = HAL_RTC_STATE_BUSY;
-
- /* Disable the write protection for RTC registers */
- __HAL_RTC_WRITEPROTECTION_DISABLE(hrtc);
-
- /* Enter Initialization mode */
- status = RTC_EnterInitMode(hrtc);
-
- if (status == HAL_OK)
- {
- /* Enable the Coarse Calibration */
- __HAL_RTC_COARSE_CALIB_ENABLE(hrtc);
-
- /* Set the coarse calibration value */
- hrtc->Instance->CALIBR = (uint32_t)(CalibSign | Value);
-
- /* Exit Initialization mode */
- status = RTC_ExitInitMode(hrtc);
- }
-
- if (status == HAL_OK)
- {
- hrtc->State = HAL_RTC_STATE_READY;
- }
-
- /* Enable the write protection for RTC registers */
- __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
-
- /* Process Unlocked */
- __HAL_UNLOCK(hrtc);
-
- return status;
- }
-
- /**
- * @brief Deactivates the Coarse calibration parameters.
- * @param hrtc pointer to a RTC_HandleTypeDef structure that contains
- * the configuration information for RTC.
- * @retval HAL status
- */
- HAL_StatusTypeDef HAL_RTCEx_DeactivateCoarseCalib(RTC_HandleTypeDef *hrtc)
- {
- HAL_StatusTypeDef status;
-
- /* Process Locked */
- __HAL_LOCK(hrtc);
-
- hrtc->State = HAL_RTC_STATE_BUSY;
-
- /* Disable the write protection for RTC registers */
- __HAL_RTC_WRITEPROTECTION_DISABLE(hrtc);
-
- /* Enter Initialization mode */
- status = RTC_EnterInitMode(hrtc);
-
- if (status == HAL_OK)
- {
- /* Disable the Coarse Calibration */
- __HAL_RTC_COARSE_CALIB_DISABLE(hrtc);
-
- /* Exit Initialization mode */
- status = RTC_ExitInitMode(hrtc);
- }
-
- if (status == HAL_OK)
- {
- hrtc->State = HAL_RTC_STATE_READY;
- }
-
- /* Enable the write protection for RTC registers */
- __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
-
- /* Process Unlocked */
- __HAL_UNLOCK(hrtc);
-
- return status;
- }
-
- /**
- * @brief Sets the Smooth calibration parameters.
- * @param hrtc pointer to a RTC_HandleTypeDef structure that contains
- * the configuration information for RTC.
- * @param SmoothCalibPeriod Select the Smooth Calibration Period.
- * This parameter can be can be one of the following values:
- * @arg RTC_SMOOTHCALIB_PERIOD_32SEC: The smooth calibration period is 32s.
- * @arg RTC_SMOOTHCALIB_PERIOD_16SEC: The smooth calibration period is 16s.
- * @arg RTC_SMOOTHCALIB_PERIOD_8SEC: The smooth calibration period is 8s.
- * @param SmoothCalibPlusPulses Select to Set or reset the CALP bit.
- * This parameter can be one of the following values:
- * @arg RTC_SMOOTHCALIB_PLUSPULSES_SET: Add one RTCCLK pulse every 2*11 pulses.
- * @arg RTC_SMOOTHCALIB_PLUSPULSES_RESET: No RTCCLK pulses are added.
- * @param SmoothCalibMinusPulsesValue Select the value of CALM[8:0] bits.
- * This parameter can be one any value from 0 to 0x000001FF.
- * @note To deactivate the smooth calibration, the field SmoothCalibPlusPulses
- * must be equal to SMOOTHCALIB_PLUSPULSES_RESET and the field
- * SmoothCalibMinusPulsesValue must be equal to 0.
- * @retval HAL status
- */
- HAL_StatusTypeDef HAL_RTCEx_SetSmoothCalib(RTC_HandleTypeDef *hrtc, uint32_t SmoothCalibPeriod, uint32_t SmoothCalibPlusPulses, uint32_t SmoothCalibMinusPulsesValue)
- {
- uint32_t tickstart = 0U;
-
- /* Check the parameters */
- assert_param(IS_RTC_SMOOTH_CALIB_PERIOD(SmoothCalibPeriod));
- assert_param(IS_RTC_SMOOTH_CALIB_PLUS(SmoothCalibPlusPulses));
- assert_param(IS_RTC_SMOOTH_CALIB_MINUS(SmoothCalibMinusPulsesValue));
-
- /* Process Locked */
- __HAL_LOCK(hrtc);
-
- hrtc->State = HAL_RTC_STATE_BUSY;
-
- /* Disable the write protection for RTC registers */
- __HAL_RTC_WRITEPROTECTION_DISABLE(hrtc);
-
- /* check if a calibration is pending*/
- if ((hrtc->Instance->ISR & RTC_ISR_RECALPF) != 0U)
- {
- /* Get tick */
- tickstart = HAL_GetTick();
-
- /* check if a calibration is pending*/
- while ((hrtc->Instance->ISR & RTC_ISR_RECALPF) != 0U)
- {
- if ((HAL_GetTick() - tickstart) > RTC_TIMEOUT_VALUE)
- {
- /* Enable the write protection for RTC registers */
- __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
-
- /* Change RTC state */
- hrtc->State = HAL_RTC_STATE_TIMEOUT;
-
- /* Process Unlocked */
- __HAL_UNLOCK(hrtc);
-
- return HAL_TIMEOUT;
- }
- }
- }
-
- /* Configure the Smooth calibration settings */
- hrtc->Instance->CALR = (uint32_t)((uint32_t)SmoothCalibPeriod | \
- (uint32_t)SmoothCalibPlusPulses | \
- (uint32_t)SmoothCalibMinusPulsesValue);
-
- /* Enable the write protection for RTC registers */
- __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
-
- /* Change RTC state */
- hrtc->State = HAL_RTC_STATE_READY;
-
- /* Process Unlocked */
- __HAL_UNLOCK(hrtc);
-
- return HAL_OK;
- }
-
- /**
- * @brief Configures the Synchronization Shift Control Settings.
- * @note When REFCKON is set, firmware must not write to Shift control register.
- * @param hrtc pointer to a RTC_HandleTypeDef structure that contains
- * the configuration information for RTC.
- * @param ShiftAdd1S Select to add or not 1 second to the time calendar.
- * This parameter can be one of the following values:
- * @arg RTC_SHIFTADD1S_SET: Add one second to the clock calendar.
- * @arg RTC_SHIFTADD1S_RESET: No effect.
- * @param ShiftSubFS Select the number of Second Fractions to substitute.
- * This parameter can be one any value from 0 to 0x7FFF.
- * @retval HAL status
- */
- HAL_StatusTypeDef HAL_RTCEx_SetSynchroShift(RTC_HandleTypeDef *hrtc, uint32_t ShiftAdd1S, uint32_t ShiftSubFS)
- {
- uint32_t tickstart = 0U;
-
- /* Check the parameters */
- assert_param(IS_RTC_SHIFT_ADD1S(ShiftAdd1S));
- assert_param(IS_RTC_SHIFT_SUBFS(ShiftSubFS));
-
- /* Process Locked */
- __HAL_LOCK(hrtc);
-
- hrtc->State = HAL_RTC_STATE_BUSY;
-
- /* Disable the write protection for RTC registers */
- __HAL_RTC_WRITEPROTECTION_DISABLE(hrtc);
-
- /* Get tick */
- tickstart = HAL_GetTick();
-
- /* Wait until the shift is completed */
- while ((hrtc->Instance->ISR & RTC_ISR_SHPF) != 0U)
- {
- if ((HAL_GetTick() - tickstart) > RTC_TIMEOUT_VALUE)
- {
- /* Enable the write protection for RTC registers */
- __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
-
- hrtc->State = HAL_RTC_STATE_TIMEOUT;
-
- /* Process Unlocked */
- __HAL_UNLOCK(hrtc);
-
- return HAL_TIMEOUT;
- }
- }
-
- /* Check if the reference clock detection is disabled */
- if ((hrtc->Instance->CR & RTC_CR_REFCKON) == 0U)
- {
- /* Configure the Shift settings */
- hrtc->Instance->SHIFTR = (uint32_t)(uint32_t)(ShiftSubFS) | (uint32_t)(ShiftAdd1S);
-
- /* If RTC_CR_BYPSHAD bit = 0, wait for synchro else this check is not needed */
- if ((hrtc->Instance->CR & RTC_CR_BYPSHAD) == 0U)
- {
- if (HAL_RTC_WaitForSynchro(hrtc) != HAL_OK)
- {
- /* Enable the write protection for RTC registers */
- __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
-
- hrtc->State = HAL_RTC_STATE_ERROR;
-
- /* Process Unlocked */
- __HAL_UNLOCK(hrtc);
-
- return HAL_ERROR;
- }
- }
- }
- else
- {
- /* Enable the write protection for RTC registers */
- __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
-
- /* Change RTC state */
- hrtc->State = HAL_RTC_STATE_ERROR;
-
- /* Process Unlocked */
- __HAL_UNLOCK(hrtc);
-
- return HAL_ERROR;
- }
-
- /* Enable the write protection for RTC registers */
- __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
-
- /* Change RTC state */
- hrtc->State = HAL_RTC_STATE_READY;
-
- /* Process Unlocked */
- __HAL_UNLOCK(hrtc);
-
- return HAL_OK;
- }
-
- /**
- * @brief Configures the Calibration Pinout (RTC_CALIB) Selection (1Hz or 512Hz).
- * @param hrtc pointer to a RTC_HandleTypeDef structure that contains
- * the configuration information for RTC.
- * @param CalibOutput Select the Calibration output Selection.
- * This parameter can be one of the following values:
- * @arg RTC_CALIBOUTPUT_512HZ: A signal has a regular waveform at 512Hz.
- * @arg RTC_CALIBOUTPUT_1HZ: A signal has a regular waveform at 1Hz.
- * @retval HAL status
- */
- HAL_StatusTypeDef HAL_RTCEx_SetCalibrationOutPut(RTC_HandleTypeDef *hrtc, uint32_t CalibOutput)
- {
- /* Check the parameters */
- assert_param(IS_RTC_CALIB_OUTPUT(CalibOutput));
-
- /* Process Locked */
- __HAL_LOCK(hrtc);
-
- hrtc->State = HAL_RTC_STATE_BUSY;
-
- /* Disable the write protection for RTC registers */
- __HAL_RTC_WRITEPROTECTION_DISABLE(hrtc);
-
- /* Clear flags before config */
- hrtc->Instance->CR &= (uint32_t)~RTC_CR_COSEL;
-
- /* Configure the RTC_CR register */
- hrtc->Instance->CR |= (uint32_t)CalibOutput;
-
- __HAL_RTC_CALIBRATION_OUTPUT_ENABLE(hrtc);
-
- /* Enable the write protection for RTC registers */
- __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
-
- /* Change RTC state */
- hrtc->State = HAL_RTC_STATE_READY;
-
- /* Process Unlocked */
- __HAL_UNLOCK(hrtc);
-
- return HAL_OK;
- }
-
- /**
- * @brief Deactivates the Calibration Pinout (RTC_CALIB) Selection (1Hz or 512Hz).
- * @param hrtc pointer to a RTC_HandleTypeDef structure that contains
- * the configuration information for RTC.
- * @retval HAL status
- */
- HAL_StatusTypeDef HAL_RTCEx_DeactivateCalibrationOutPut(RTC_HandleTypeDef *hrtc)
- {
- /* Process Locked */
- __HAL_LOCK(hrtc);
-
- hrtc->State = HAL_RTC_STATE_BUSY;
-
- /* Disable the write protection for RTC registers */
- __HAL_RTC_WRITEPROTECTION_DISABLE(hrtc);
-
- __HAL_RTC_CALIBRATION_OUTPUT_DISABLE(hrtc);
-
- /* Enable the write protection for RTC registers */
- __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
-
- /* Change RTC state */
- hrtc->State = HAL_RTC_STATE_READY;
-
- /* Process Unlocked */
- __HAL_UNLOCK(hrtc);
-
- return HAL_OK;
- }
-
- /**
- * @brief Enables the RTC reference clock detection.
- * @param hrtc pointer to a RTC_HandleTypeDef structure that contains
- * the configuration information for RTC.
- * @retval HAL status
- */
- HAL_StatusTypeDef HAL_RTCEx_SetRefClock(RTC_HandleTypeDef *hrtc)
- {
- HAL_StatusTypeDef status;
-
- /* Process Locked */
- __HAL_LOCK(hrtc);
-
- hrtc->State = HAL_RTC_STATE_BUSY;
-
- /* Disable the write protection for RTC registers */
- __HAL_RTC_WRITEPROTECTION_DISABLE(hrtc);
-
- /* Enter Initialization mode */
- status = RTC_EnterInitMode(hrtc);
-
- if (status == HAL_OK)
- {
- /* Enable the reference clock detection */
- __HAL_RTC_CLOCKREF_DETECTION_ENABLE(hrtc);
-
- /* Exit Initialization mode */
- status = RTC_ExitInitMode(hrtc);
- }
-
- if (status == HAL_OK)
- {
- hrtc->State = HAL_RTC_STATE_READY;
- }
-
- /* Enable the write protection for RTC registers */
- __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
-
- /* Process Unlocked */
- __HAL_UNLOCK(hrtc);
-
- return status;
- }
-
- /**
- * @brief Disable the RTC reference clock detection.
- * @param hrtc pointer to a RTC_HandleTypeDef structure that contains
- * the configuration information for RTC.
- * @retval HAL status
- */
- HAL_StatusTypeDef HAL_RTCEx_DeactivateRefClock(RTC_HandleTypeDef *hrtc)
- {
- HAL_StatusTypeDef status;
-
- /* Process Locked */
- __HAL_LOCK(hrtc);
-
- hrtc->State = HAL_RTC_STATE_BUSY;
-
- /* Disable the write protection for RTC registers */
- __HAL_RTC_WRITEPROTECTION_DISABLE(hrtc);
-
- /* Enter Initialization mode */
- status = RTC_EnterInitMode(hrtc);
-
- if (status == HAL_OK)
- {
- /* Disable the reference clock detection */
- __HAL_RTC_CLOCKREF_DETECTION_DISABLE(hrtc);
-
- /* Exit Initialization mode */
- status = RTC_ExitInitMode(hrtc);
- }
-
- if (status == HAL_OK)
- {
- hrtc->State = HAL_RTC_STATE_READY;
- }
-
- /* Enable the write protection for RTC registers */
- __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
-
- /* Process Unlocked */
- __HAL_UNLOCK(hrtc);
-
- return status;
- }
-
- /**
- * @brief Enables the Bypass Shadow feature.
- * @param hrtc pointer to a RTC_HandleTypeDef structure that contains
- * the configuration information for RTC.
- * @note When the Bypass Shadow is enabled the calendar value are taken
- * directly from the Calendar counter.
- * @retval HAL status
- */
- HAL_StatusTypeDef HAL_RTCEx_EnableBypassShadow(RTC_HandleTypeDef *hrtc)
- {
- /* Process Locked */
- __HAL_LOCK(hrtc);
-
- hrtc->State = HAL_RTC_STATE_BUSY;
-
- /* Disable the write protection for RTC registers */
- __HAL_RTC_WRITEPROTECTION_DISABLE(hrtc);
-
- /* Set the BYPSHAD bit */
- hrtc->Instance->CR |= (uint8_t)RTC_CR_BYPSHAD;
-
- /* Enable the write protection for RTC registers */
- __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
-
- /* Change RTC state */
- hrtc->State = HAL_RTC_STATE_READY;
-
- /* Process Unlocked */
- __HAL_UNLOCK(hrtc);
-
- return HAL_OK;
- }
-
- /**
- * @brief Disables the Bypass Shadow feature.
- * @param hrtc pointer to a RTC_HandleTypeDef structure that contains
- * the configuration information for RTC.
- * @note When the Bypass Shadow is enabled the calendar value are taken
- * directly from the Calendar counter.
- * @retval HAL status
- */
- HAL_StatusTypeDef HAL_RTCEx_DisableBypassShadow(RTC_HandleTypeDef *hrtc)
- {
- /* Process Locked */
- __HAL_LOCK(hrtc);
-
- hrtc->State = HAL_RTC_STATE_BUSY;
-
- /* Disable the write protection for RTC registers */
- __HAL_RTC_WRITEPROTECTION_DISABLE(hrtc);
-
- /* Reset the BYPSHAD bit */
- hrtc->Instance->CR &= (uint8_t)~RTC_CR_BYPSHAD;
-
- /* Enable the write protection for RTC registers */
- __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
-
- /* Change RTC state */
- hrtc->State = HAL_RTC_STATE_READY;
-
- /* Process Unlocked */
- __HAL_UNLOCK(hrtc);
-
- return HAL_OK;
- }
-
- /**
- * @}
- */
-
- /** @defgroup RTCEx_Exported_Functions_Group4 Extended features functions
- * @brief Extended features functions
- *
- @verbatim
- ===============================================================================
- ##### Extended features functions #####
- ===============================================================================
- [..] This section provides functions allowing to:
- (+) RTC Alarm B callback
- (+) RTC Poll for Alarm B request
-
- @endverbatim
- * @{
- */
-
- /**
- * @brief Alarm B callback.
- * @param hrtc pointer to a RTC_HandleTypeDef structure that contains
- * the configuration information for RTC.
- * @retval None
- */
- __weak void HAL_RTCEx_AlarmBEventCallback(RTC_HandleTypeDef *hrtc)
- {
- /* Prevent unused argument(s) compilation warning */
- UNUSED(hrtc);
-
- /* NOTE: This function should not be modified, when the callback is needed,
- the HAL_RTCEx_AlarmBEventCallback could be implemented in the user file
- */
- }
-
- /**
- * @brief Handles Alarm B Polling request.
- * @param hrtc pointer to a RTC_HandleTypeDef structure that contains
- * the configuration information for RTC.
- * @param Timeout Timeout duration
- * @retval HAL status
- */
- HAL_StatusTypeDef HAL_RTCEx_PollForAlarmBEvent(RTC_HandleTypeDef *hrtc, uint32_t Timeout)
- {
- uint32_t tickstart = 0U;
-
- /* Get tick */
- tickstart = HAL_GetTick();
-
- /* Wait till RTC ALRBF flag is set and if timeout is reached exit */
- while (__HAL_RTC_ALARM_GET_FLAG(hrtc, RTC_FLAG_ALRBF) == 0U)
- {
- if (Timeout != HAL_MAX_DELAY)
- {
- if ((Timeout == 0U) || ((HAL_GetTick() - tickstart) > Timeout))
- {
- hrtc->State = HAL_RTC_STATE_TIMEOUT;
- return HAL_TIMEOUT;
- }
- }
- }
-
- /* Clear the Alarm flag */
- __HAL_RTC_ALARM_CLEAR_FLAG(hrtc, RTC_FLAG_ALRBF);
-
- /* Change RTC state */
- hrtc->State = HAL_RTC_STATE_READY;
-
- return HAL_OK;
- }
-
- /**
- * @}
- */
-
- /**
- * @}
- */
-
- #endif /* HAL_RTC_MODULE_ENABLED */
- /**
- * @}
- */
-
- /**
- * @}
- */
|