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u0-decibels/Drivers/STM32U0xx_HAL_Driver/Src/stm32u0xx_hal_rtc_ex.c

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/**
******************************************************************************
* @file stm32u0xx_hal_rtc_ex.c
* @author GPM 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 Time Stamp functions
* + RTC Tamper functions
* + RTC Wake-up functions
* + Extended Control functions
* + Extended RTC features functions
*
******************************************************************************
* @attention
*
* Copyright (c) 2023 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 with interrupt mode
using the HAL_RTCEx_SetWakeUpTimer_IT() function.
(+) To read the RTC WakeUp Counter register, use the HAL_RTCEx_GetWakeUpTimer()
function.
*** Outputs configuration ***
=============================
[..] The RTC has 2 different outputs:
(+) RTC_ALARM: this output is used to manage the RTC Alarm A, Alarm B
and WaKeUp signals.
To output the selected RTC signal, use the HAL_RTC_Init() function.
(+) RTC_CALIB: this output is 512Hz signal or 1Hz.
To enable the RTC_CALIB, use the HAL_RTCEx_SetCalibrationOutPut() function.
(+) Two pins can be used as RTC_ALARM or RTC_CALIB (PC13, PB2) managed on
the RTC_OR register.
(+) When the RTC_CALIB or RTC_ALARM output is selected, the RTC_OUT pin is
automatically configured in output alternate function.
*** Smooth digital Calibration configuration ***
================================================
[..]
(+) Configure the RTC Original Digital Calibration Value and the corresponding
calibration cycle period (32s,16s and 8s) using the HAL_RTCEx_SetSmoothCalib()
function.
*** TimeStamp configuration ***
===============================
[..]
(+) Enable the RTC TimeStamp using 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.
*** Internal TimeStamp configuration ***
===============================
[..]
(+) Enable the RTC internal TimeStamp using the HAL_RTCEx_SetInternalTimeStamp() function.
User has to check internal timestamp occurrence using __HAL_RTC_INTERNAL_TIMESTAMP_GET_FLAG.
(+) To read the RTC TimeStamp Time and Date register, use the HAL_RTCEx_GetTimeStamp()
function.
*** Tamper configuration ***
============================
[..]
(+) Enable the RTC Tamper and configure the Tamper filter count, trigger Edge
or Level according to the Tamper filter (if equal to 0 Edge else Level)
value, sampling frequency, NoErase, MaskFlag, precharge or discharge and
Pull-UP using the HAL_RTCEx_SetTamper() function. You can configure RTC Tamper
with interrupt mode using HAL_RTCEx_SetTamper_IT() function.
(+) The default configuration of the Tamper erases the backup registers. To avoid
erase, enable the NoErase field on the RTC_TAMPCR register.
(+) With new RTC tamper configuration, you have to call HAL_RTC_Init() in order to
perform TAMP base address offset calculation.
(+) If you do not intend to have tamper using RTC clock, you can bypass its initialization
by setting ClockEnable inti field to RTC_CLOCK_DISABLE.
(+) Enable Internal tamper using HAL_RTCEx_SetInternalTamper. IT mode can be chosen using
setting Interrupt field.
*** 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.
(+) Before calling these functions you have to call HAL_RTC_Init() in order to
perform TAMP base address offset calculation.
@endverbatim
*/
/* Includes ------------------------------------------------------------------*/
#include "stm32u0xx_hal.h"
/** @addtogroup STM32U0xx_HAL_Driver
* @{
*/
/** @addtogroup RTCEx
* @brief RTC Extended HAL module driver
* @{
*/
#ifdef HAL_RTC_MODULE_ENABLED
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
#define TAMP_ALL (TAMP_CR1_TAMP1E | TAMP_CR1_TAMP2E | TAMP_CR1_TAMP3E | \
TAMP_CR1_TAMP4E | TAMP_CR1_TAMP5E )
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/* Exported functions --------------------------------------------------------*/
/** @addtogroup RTCEx_Exported_Functions
* @{
*/
/** @addtogroup RTCEx_Exported_Functions_Group1
* @brief RTC TimeStamp and Tamper functions
*
@verbatim
===============================================================================
##### RTC TimeStamp and Tamper functions #####
===============================================================================
[..] This section provides functions allowing to configure TimeStamp feature
@endverbatim
* @{
*/
/**
* @brief Set TimeStamp.
* @note This API must be called before enabling the TimeStamp feature.
* @param hrtc RTC handle
* @param 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 Time stamp event occurs on the
* rising edge of the related pin.
* @arg RTC_TIMESTAMPEDGE_FALLING: the Time stamp 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.
* The RTC TimeStamp Pin is per default PC13, but for reasons of
* compatibility, this parameter is required.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_RTCEx_SetTimeStamp(RTC_HandleTypeDef *hrtc, uint32_t TimeStampEdge, uint32_t RTC_TimeStampPin)
{
/* Check the parameters */
assert_param(IS_TIMESTAMP_EDGE(TimeStampEdge));
assert_param(IS_RTC_TIMESTAMP_PIN(RTC_TimeStampPin));
UNUSED(RTC_TimeStampPin);
/* Process Locked */
__HAL_LOCK(hrtc);
hrtc->State = HAL_RTC_STATE_BUSY;
/* Get the RTC_CR register and clear the bits to be configured */
CLEAR_BIT(RTC->CR, (RTC_CR_TSEDGE | RTC_CR_TSE));
/* Configure the Time Stamp TSEDGE and Enable bits */
SET_BIT(RTC->CR, (uint32_t)TimeStampEdge | RTC_CR_TSE);
/* Change RTC state */
hrtc->State = HAL_RTC_STATE_READY;
/* Process Unlocked */
__HAL_UNLOCK(hrtc);
return HAL_OK;
}
/**
* @brief Set TimeStamp with Interrupt.
* @note This API must be called before enabling the TimeStamp feature.
* @param hrtc RTC handle
* @param 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 Time stamp event occurs on the
* rising edge of the related pin.
* @arg RTC_TIMESTAMPEDGE_FALLING: the Time stamp 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.
* The RTC TimeStamp Pin is per default PC13, but for reasons of
* compatibility, this parameter is required.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_RTCEx_SetTimeStamp_IT(RTC_HandleTypeDef *hrtc, uint32_t TimeStampEdge, uint32_t RTC_TimeStampPin)
{
/* Check the parameters */
assert_param(IS_TIMESTAMP_EDGE(TimeStampEdge));
assert_param(IS_RTC_TIMESTAMP_PIN(RTC_TimeStampPin));
UNUSED(RTC_TimeStampPin);
/* Process Locked */
__HAL_LOCK(hrtc);
hrtc->State = HAL_RTC_STATE_BUSY;
/* RTC timestamp Interrupt Configuration: EXTI configuration */
__HAL_RTC_TIMESTAMP_EXTI_ENABLE_IT();
/* Get the RTC_CR register and clear the bits to be configured */
CLEAR_BIT(RTC->CR, (RTC_CR_TSEDGE | RTC_CR_TSE));
/* Configure the Time Stamp TSEDGE before Enable bit to avoid unwanted TSF setting. */
SET_BIT(RTC->CR, (uint32_t)TimeStampEdge);
/* Enable timestamp and IT */
SET_BIT(RTC->CR, RTC_CR_TSE | RTC_CR_TSIE);
hrtc->State = HAL_RTC_STATE_READY;
/* Process Unlocked */
__HAL_UNLOCK(hrtc);
return HAL_OK;
}
/**
* @brief Deactivate TimeStamp.
* @param hrtc RTC handle
* @retval HAL status
*/
HAL_StatusTypeDef HAL_RTCEx_DeactivateTimeStamp(RTC_HandleTypeDef *hrtc)
{
/* Process Locked */
__HAL_LOCK(hrtc);
hrtc->State = HAL_RTC_STATE_BUSY;
/* In case of interrupt mode is used, the interrupt source must disabled */
CLEAR_BIT(RTC->CR, (RTC_CR_TSEDGE | RTC_CR_TSE | RTC_CR_TSIE));
hrtc->State = HAL_RTC_STATE_READY;
/* Process Unlocked */
__HAL_UNLOCK(hrtc);
return HAL_OK;
}
/**
* @brief Set Internal TimeStamp.
* @note This API must be called before enabling the internal TimeStamp feature.
* @param hrtc RTC handle
* @retval HAL status
*/
HAL_StatusTypeDef HAL_RTCEx_SetInternalTimeStamp(RTC_HandleTypeDef *hrtc)
{
/* Process Locked */
__HAL_LOCK(hrtc);
hrtc->State = HAL_RTC_STATE_BUSY;
/* Configure the internal Time Stamp Enable bits */
SET_BIT(RTC->CR, RTC_CR_ITSE);
/* Change RTC state */
hrtc->State = HAL_RTC_STATE_READY;
/* Process Unlocked */
__HAL_UNLOCK(hrtc);
return HAL_OK;
}
/**
* @brief Deactivate Internal TimeStamp.
* @param hrtc RTC handle
* @retval HAL status
*/
HAL_StatusTypeDef HAL_RTCEx_DeactivateInternalTimeStamp(RTC_HandleTypeDef *hrtc)
{
/* Process Locked */
__HAL_LOCK(hrtc);
hrtc->State = HAL_RTC_STATE_BUSY;
/* Configure the internal Time Stamp Enable bits */
CLEAR_BIT(RTC->CR, RTC_CR_ITSE);
hrtc->State = HAL_RTC_STATE_READY;
/* Process Unlocked */
__HAL_UNLOCK(hrtc);
return HAL_OK;
}
/**
* @brief Get the RTC TimeStamp value.
* @param hrtc RTC handle
* @param sTimeStamp Pointer to Time structure
* if BinMode = RTC_BINARY_ONLY, sTimeStamp->SubSeconds only is used
* @param sTimeStampDate Pointer to Date structure
* if BinMode = RTC_BINARY_ONLY, this parameter is not used.
* @param Format specifies the format of the entered parameters.
* if BinMode = RTC_BINARY_ONLY, this parameter is not used
* else 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(const RTC_HandleTypeDef *hrtc, RTC_TimeTypeDef *sTimeStamp,
RTC_DateTypeDef *sTimeStampDate, uint32_t Format)
{
uint32_t tmptime;
uint32_t tmpdate;
UNUSED(hrtc);
sTimeStamp->SubSeconds = READ_REG(RTC->TSSSR);
if (READ_BIT(RTC->ICSR, RTC_ICSR_BIN) != RTC_BINARY_ONLY)
{
/* Check the parameters */
assert_param(IS_RTC_FORMAT(Format));
/* Get the TimeStamp time and date registers values */
tmptime = READ_BIT(RTC->TSTR, RTC_TR_RESERVED_MASK);
tmpdate = READ_BIT(RTC->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 = READ_BIT(RTC->TSSSR, RTC_TSSSR_SS);
/* 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));
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 Flags */
WRITE_REG(RTC->SCR, (RTC_SCR_CITSF | RTC_SCR_CTSF));
return HAL_OK;
}
/**
* @brief Handle TimeStamp interrupt request.
* @param hrtc RTC handle
* @retval None
*/
void HAL_RTCEx_TimeStampIRQHandler(RTC_HandleTypeDef *hrtc)
{
if (READ_BIT(RTC->MISR, RTC_MISR_TSMF) != 0U)
{
#if (USE_HAL_RTC_REGISTER_CALLBACKS == 1)
/* Call TimeStampEvent registered Callback */
hrtc->TimeStampEventCallback(hrtc);
#else
HAL_RTCEx_TimeStampEventCallback(hrtc);
#endif /* USE_HAL_RTC_REGISTER_CALLBACKS */
/* Clearing flags after the Callback because the content
of RTC_TSTR and RTC_TSDR are cleared when TSF bit is reset. */
WRITE_REG(RTC->SCR, RTC_SCR_CITSF | RTC_SCR_CTSF);
}
/* Change RTC state */
hrtc->State = HAL_RTC_STATE_READY;
}
/**
* @brief TimeStamp callback.
* @param hrtc RTC handle
* @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 Handle TimeStamp polling request.
* @param hrtc RTC handle
* @param Timeout Timeout duration
* @retval HAL status
*/
HAL_StatusTypeDef HAL_RTCEx_PollForTimeStampEvent(RTC_HandleTypeDef *hrtc, uint32_t Timeout)
{
uint32_t tickstart = HAL_GetTick();
while (READ_BIT(RTC->SR, RTC_SR_TSF) == 0U)
{
if (READ_BIT(RTC->SR, RTC_SR_TSOVF) != 0U)
{
/* Clear the TIMESTAMP OverRun Flag */
WRITE_REG(RTC->SCR, RTC_SCR_CTSOVF);
/* Change TIMESTAMP state */
hrtc->State = HAL_RTC_STATE_ERROR;
return HAL_ERROR;
}
if (Timeout != HAL_MAX_DELAY)
{
if (((HAL_GetTick() - tickstart) > Timeout) || (Timeout == 0U))
{
hrtc->State = HAL_RTC_STATE_TIMEOUT;
return HAL_TIMEOUT;
}
}
}
/* Change RTC state */
hrtc->State = HAL_RTC_STATE_READY;
return HAL_OK;
}
/**
* @}
*/
/** @addtogroup RTCEx_Exported_Functions_Group2
* @brief RTC Wake-up functions
*
@verbatim
===============================================================================
##### RTC Wake-up functions #####
===============================================================================
[..] This section provides functions allowing to configure Wake-up feature
@endverbatim
* @{
*/
/**
* @brief Set wake up timer.
* @param hrtc RTC handle
* @param WakeUpCounter Wake up counter
* @param WakeUpClock Wake up clock
* @retval HAL status
*/
HAL_StatusTypeDef HAL_RTCEx_SetWakeUpTimer(RTC_HandleTypeDef *hrtc, uint32_t WakeUpCounter, uint32_t WakeUpClock)
{
uint32_t tickstart;
/* 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;
/* Check RTC WUTWF flag is reset only when wake up timer enabled*/
if (READ_BIT(RTC->CR, RTC_CR_WUTE) != 0U)
{
tickstart = HAL_GetTick();
/* Wait till RTC WUTWF flag is reset and if Time out is reached exit */
while (READ_BIT(RTC->ICSR, RTC_ICSR_WUTWF) != 0U)
{
if ((HAL_GetTick() - tickstart) > RTC_TIMEOUT_VALUE)
{
hrtc->State = HAL_RTC_STATE_TIMEOUT;
/* Process Unlocked */
__HAL_UNLOCK(hrtc);
return HAL_TIMEOUT;
}
}
}
/* Disable Wake Up timer */
CLEAR_BIT(RTC->CR, RTC_CR_WUTE);
tickstart = HAL_GetTick();
/* Wait till RTC WUTWF flag is set and if Time out is reached exit */
while (READ_BIT(RTC->ICSR, RTC_ICSR_WUTWF) == 0U)
{
if ((HAL_GetTick() - tickstart) > RTC_TIMEOUT_VALUE)
{
hrtc->State = HAL_RTC_STATE_TIMEOUT;
/* Process Unlocked */
__HAL_UNLOCK(hrtc);
return HAL_TIMEOUT;
}
}
/* Configure the clock source */
MODIFY_REG(RTC->CR, RTC_CR_WUCKSEL, (uint32_t)WakeUpClock);
/* Configure the Wakeup Timer counter */
WRITE_REG(RTC->WUTR, (uint32_t)WakeUpCounter);
/* Enable the Wakeup Timer */
SET_BIT(RTC->CR, RTC_CR_WUTE);
/* 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 Set wake up timer with interrupt.
* @param hrtc RTC handle
* @param WakeUpCounter Wake up counter
* @param WakeUpClock Wake up clock
* @param WakeUpAutoClr Wake up auto clear value (look at WUTOCLR in reference manual)
* - No effect if WakeUpAutoClr is set to zero
* - This feature is meaningful in case of Low power mode to avoid
* any RTC software execution after Wake Up.
* That is why when WakeUpAutoClr is set,
* EXTI is configured as EVENT instead of Interrupt to avoid useless IRQ handler execution.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_RTCEx_SetWakeUpTimer_IT(RTC_HandleTypeDef *hrtc, uint32_t WakeUpCounter, uint32_t WakeUpClock,
uint32_t WakeUpAutoClr)
{
uint32_t tickstart;
/* Check the parameters */
assert_param(IS_RTC_WAKEUP_CLOCK(WakeUpClock));
assert_param(IS_RTC_WAKEUP_COUNTER(WakeUpCounter));
/* (0x0000<=WUTOCLR<=WUT) */
assert_param(WakeUpAutoClr <= WakeUpCounter);
/* Process Locked */
__HAL_LOCK(hrtc);
hrtc->State = HAL_RTC_STATE_BUSY;
/* Check RTC WUTWF flag is reset only when wake up timer enabled*/
if (READ_BIT(RTC->CR, RTC_CR_WUTE) != 0U)
{
tickstart = HAL_GetTick();
/* Wait till RTC WUTWF flag is reset and if Time out is reached exit */
while (READ_BIT(RTC->ICSR, RTC_ICSR_WUTWF) != 0U)
{
if ((HAL_GetTick() - tickstart) > RTC_TIMEOUT_VALUE)
{
hrtc->State = HAL_RTC_STATE_TIMEOUT;
/* Process Unlocked */
__HAL_UNLOCK(hrtc);
return HAL_TIMEOUT;
}
}
}
/* Disable the Wake-Up timer */
CLEAR_BIT(RTC->CR, RTC_CR_WUTE);
/* Clear flag Wake-Up */
WRITE_REG(RTC->SCR, RTC_SCR_CWUTF);
tickstart = HAL_GetTick();
/* Wait till RTC WUTWF flag is set and if Time out is reached exit */
while (READ_BIT(RTC->ICSR, RTC_ICSR_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;
}
}
/* Configure the Wakeup Timer counter and auto clear value */
WRITE_REG(RTC->WUTR, (uint32_t)(WakeUpCounter | (WakeUpAutoClr << RTC_WUTR_WUTOCLR_Pos)));
/* Configure the clock source */
MODIFY_REG(RTC->CR, RTC_CR_WUCKSEL, (uint32_t)WakeUpClock);
/* In case of WUT autoclr, the IRQ handler should not be called */
if (WakeUpAutoClr != 0U)
{
/* RTC WakeUpTimer EXTI Configuration: Event configuration */
__HAL_RTC_WAKEUPTIMER_EXTI_ENABLE_EVENT();
}
else
{
/* RTC WakeUpTimer EXTI Configuration: Interrupt configuration */
__HAL_RTC_WAKEUPTIMER_EXTI_ENABLE_IT();
}
/* Configure the Interrupt in the RTC_CR register and Enable the Wakeup Timer*/
SET_BIT(RTC->CR, (RTC_CR_WUTIE | RTC_CR_WUTE));
hrtc->State = HAL_RTC_STATE_READY;
/* Process Unlocked */
__HAL_UNLOCK(hrtc);
return HAL_OK;
}
/**
* @brief Deactivate wake up timer counter.
* @param hrtc RTC handle
* @retval HAL status
*/
HAL_StatusTypeDef HAL_RTCEx_DeactivateWakeUpTimer(RTC_HandleTypeDef *hrtc)
{
/* Process Locked */
__HAL_LOCK(hrtc);
/* Change RTC state */
hrtc->State = HAL_RTC_STATE_BUSY;
/* Disable the Wakeup Timer */
/* In case of interrupt mode is used, the interrupt source must disabled */
CLEAR_BIT(RTC->CR, (RTC_CR_WUTE | RTC_CR_WUTIE));
/* Change RTC state */
hrtc->State = HAL_RTC_STATE_READY;
/* Process Unlocked */
__HAL_UNLOCK(hrtc);
return HAL_OK;
}
/**
* @brief Get wake up timer counter.
* @param hrtc RTC handle
* @retval Counter value
*/
uint32_t HAL_RTCEx_GetWakeUpTimer(const RTC_HandleTypeDef *hrtc)
{
UNUSED(hrtc);
/* Get the counter value */
return (uint32_t)(READ_BIT(RTC->WUTR, RTC_WUTR_WUT));
}
/**
* @brief Handle Wake Up Timer interrupt request.
* @param hrtc RTC handle
* @retval None
*/
void HAL_RTCEx_WakeUpTimerIRQHandler(RTC_HandleTypeDef *hrtc)
{
/* Get the pending status of the WAKEUPTIMER Interrupt */
if (READ_BIT(RTC->MISR, RTC_MISR_WUTMF) != 0U)
{
/* Clear the WAKEUPTIMER interrupt pending bit */
WRITE_REG(RTC->SCR, RTC_SCR_CWUTF);
#if (USE_HAL_RTC_REGISTER_CALLBACKS == 1)
/* Call WakeUpTimerEvent registered Callback */
hrtc->WakeUpTimerEventCallback(hrtc);
#else
/* WAKEUPTIMER callback */
HAL_RTCEx_WakeUpTimerEventCallback(hrtc);
#endif /* USE_HAL_RTC_REGISTER_CALLBACKS */
}
/* Change RTC state */
hrtc->State = HAL_RTC_STATE_READY;
}
/**
* @brief Wake Up Timer callback.
* @param hrtc RTC handle
* @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 Handle Wake Up Timer Polling.
* @param hrtc RTC handle
* @param Timeout Timeout duration
* @retval HAL status
*/
HAL_StatusTypeDef HAL_RTCEx_PollForWakeUpTimerEvent(RTC_HandleTypeDef *hrtc, uint32_t Timeout)
{
uint32_t tickstart = HAL_GetTick();
while (READ_BIT(RTC->SR, RTC_SR_WUTF) == 0U)
{
if (Timeout != HAL_MAX_DELAY)
{
if (((HAL_GetTick() - tickstart) > Timeout) || (Timeout == 0U))
{
hrtc->State = HAL_RTC_STATE_TIMEOUT;
return HAL_TIMEOUT;
}
}
}
/* Clear the WAKEUPTIMER Flag */
WRITE_REG(RTC->SCR, RTC_SCR_CWUTF);
/* Change RTC state */
hrtc->State = HAL_RTC_STATE_READY;
return HAL_OK;
}
/**
* @}
*/
/** @addtogroup RTCEx_Exported_Functions_Group3
* @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.
(+) Set Low Power calibration parameter.
(+) 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 Set the Smooth calibration parameters.
* @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.
* @param hrtc RTC handle
* @param SmoothCalibPeriod Select the Smooth Calibration Period.
* This parameter 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.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_RTCEx_SetSmoothCalib(RTC_HandleTypeDef *hrtc, uint32_t SmoothCalibPeriod,
uint32_t SmoothCalibPlusPulses, uint32_t SmoothCalibMinusPulsesValue)
{
uint32_t tickstart;
/* 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;
/* check if a calibration is pending*/
if (READ_BIT(RTC->ICSR, RTC_ICSR_RECALPF) != 0U)
{
tickstart = HAL_GetTick();
/* check if a calibration is pending*/
while (READ_BIT(RTC->ICSR, RTC_ICSR_RECALPF) != 0U)
{
if ((HAL_GetTick() - tickstart) > RTC_TIMEOUT_VALUE)
{
/* Change RTC state */
hrtc->State = HAL_RTC_STATE_TIMEOUT;
/* Process Unlocked */
__HAL_UNLOCK(hrtc);
return HAL_TIMEOUT;
}
}
}
/* Disable the write protection for RTC registers */
__HAL_RTC_WRITEPROTECTION_DISABLE(hrtc);
/* Configure the Smooth calibration settings */
MODIFY_REG(RTC->CALR, (RTC_CALR_CALP | RTC_CALR_CALW8 | RTC_CALR_CALW16 | RTC_CALR_CALM),
(uint32_t)(SmoothCalibPeriod | SmoothCalibPlusPulses | 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 Select the low power Calibration mode.
* @param hrtc: RTC handle
* @param LowPowerCalib: Low power Calibration mode.
* This parameter can be one of the following values :
* @arg RTC_LPCAL_SET: Low power mode.
* @arg RTC_LPCAL_RESET: High consumption mode.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_RTCEx_SetLowPowerCalib(RTC_HandleTypeDef *hrtc, uint32_t LowPowerCalib)
{
/* Check the parameters */
assert_param(IS_RTC_LOW_POWER_CALIB(LowPowerCalib));
/* Process Locked */
__HAL_LOCK(hrtc);
hrtc->State = HAL_RTC_STATE_BUSY;
/* Disable the write protection for RTC registers */
__HAL_RTC_WRITEPROTECTION_DISABLE(hrtc);
/* Configure the Smooth calibration settings */
MODIFY_REG(RTC->CALR, RTC_CALR_LPCAL, LowPowerCalib);
/* 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 Configure the Synchronization Shift Control Settings.
* @note When REFCKON is set, firmware must not write to Shift control register.
* @param hrtc RTC handle
* @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;
/* 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;
tickstart = HAL_GetTick();
/* Wait until the shift is completed*/
while (READ_BIT(RTC->ICSR, RTC_ICSR_SHPF) != 0U)
{
if ((HAL_GetTick() - tickstart) > RTC_TIMEOUT_VALUE)
{
hrtc->State = HAL_RTC_STATE_TIMEOUT;
/* Process Unlocked */
__HAL_UNLOCK(hrtc);
return HAL_TIMEOUT;
}
}
/* Disable the write protection for RTC registers */
__HAL_RTC_WRITEPROTECTION_DISABLE(hrtc);
/* Check if the reference clock detection is disabled */
if (READ_BIT(RTC->CR, RTC_CR_REFCKON) == 0U)
{
/* Configure the Shift settings */
MODIFY_REG(RTC->SHIFTR, RTC_SHIFTR_SUBFS, (uint32_t)(ShiftSubFS) | (uint32_t)(ShiftAdd1S));
/* If RTC_CR_BYPSHAD bit = 0, wait for synchro else this check is not needed */
if (READ_BIT(RTC->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 Configure the Calibration Pinout (RTC_CALIB) Selection (1Hz or 512Hz).
* @param hrtc RTC handle
* @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;
/* Configure the RTC_CR register */
MODIFY_REG(RTC->CR, RTC_CR_COSEL, CalibOutput);
/* Enable calibration output */
SET_BIT(RTC->CR, RTC_CR_COE);
/* Change RTC state */
hrtc->State = HAL_RTC_STATE_READY;
/* Process Unlocked */
__HAL_UNLOCK(hrtc);
return HAL_OK;
}
/**
* @brief Deactivate the Calibration Pinout (RTC_CALIB) Selection (1Hz or 512Hz).
* @param hrtc RTC handle
* @retval HAL status
*/
HAL_StatusTypeDef HAL_RTCEx_DeactivateCalibrationOutPut(RTC_HandleTypeDef *hrtc)
{
/* Process Locked */
__HAL_LOCK(hrtc);
hrtc->State = HAL_RTC_STATE_BUSY;
/* Disable calibration output */
CLEAR_BIT(RTC->CR, RTC_CR_COE);
/* Change RTC state */
hrtc->State = HAL_RTC_STATE_READY;
/* Process Unlocked */
__HAL_UNLOCK(hrtc);
return HAL_OK;
}
/**
* @brief Enable the RTC reference clock detection.
* @param hrtc RTC handle
* @retval HAL status
*/
HAL_StatusTypeDef HAL_RTCEx_SetRefClock(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 Initialization mode */
if (RTC_EnterInitMode(hrtc) != HAL_OK)
{
/* Enable the write protection for RTC registers */
__HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
/* Set RTC state*/
hrtc->State = HAL_RTC_STATE_ERROR;
/* Process Unlocked */
__HAL_UNLOCK(hrtc);
return HAL_ERROR;
}
else
{
/* Enable clockref detection */
SET_BIT(RTC->CR, RTC_CR_REFCKON);
/* Exit Initialization mode */
CLEAR_BIT(RTC->ICSR, RTC_ICSR_INIT);
}
/* 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 Disable the RTC reference clock detection.
* @param hrtc RTC handle
* @retval HAL status
*/
HAL_StatusTypeDef HAL_RTCEx_DeactivateRefClock(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 Initialization mode */
if (RTC_EnterInitMode(hrtc) != HAL_OK)
{
/* Enable the write protection for RTC registers */
__HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
/* Set RTC state*/
hrtc->State = HAL_RTC_STATE_ERROR;
/* Process Unlocked */
__HAL_UNLOCK(hrtc);
return HAL_ERROR;
}
else
{
/* Disable clockref detection */
CLEAR_BIT(RTC->CR, RTC_CR_REFCKON);
/* Exit Initialization mode */
CLEAR_BIT(RTC->ICSR, RTC_ICSR_INIT);
}
/* 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 Enable the Bypass Shadow feature.
* @note When the Bypass Shadow is enabled the calendar value are taken
* directly from the Calendar counter.
* @param hrtc RTC handle
* @retval HAL status
*/
HAL_StatusTypeDef HAL_RTCEx_EnableBypassShadow(RTC_HandleTypeDef *hrtc)
{
/* Process Locked */
__HAL_LOCK(hrtc);
hrtc->State = HAL_RTC_STATE_BUSY;
/* Set the BYPSHAD bit */
SET_BIT(RTC->CR, RTC_CR_BYPSHAD);
/* Change RTC state */
hrtc->State = HAL_RTC_STATE_READY;
/* Process Unlocked */
__HAL_UNLOCK(hrtc);
return HAL_OK;
}
/**
* @brief Disable the Bypass Shadow feature.
* @note When the Bypass Shadow is enabled the calendar value are taken
* directly from the Calendar counter.
* @param hrtc RTC handle
* @retval HAL status
*/
HAL_StatusTypeDef HAL_RTCEx_DisableBypassShadow(RTC_HandleTypeDef *hrtc)
{
/* Process Locked */
__HAL_LOCK(hrtc);
hrtc->State = HAL_RTC_STATE_BUSY;
/* Reset the BYPSHAD bit */
CLEAR_BIT(RTC->CR, RTC_CR_BYPSHAD);
/* Change RTC state */
hrtc->State = HAL_RTC_STATE_READY;
/* Process Unlocked */
__HAL_UNLOCK(hrtc);
return HAL_OK;
}
/**
* @brief Set SSR Underflow detection with Interrupt.
* @param hrtc RTC handle
* @retval HAL status
*/
HAL_StatusTypeDef HAL_RTCEx_SetSSRU_IT(RTC_HandleTypeDef *hrtc)
{
/* Process Locked */
__HAL_LOCK(hrtc);
hrtc->State = HAL_RTC_STATE_BUSY;
/* Enable IT SSRU */
__HAL_RTC_SSRU_ENABLE_IT(hrtc, RTC_IT_SSRU);
/* RTC SSRU Interrupt Configuration: EXTI configuration */
__HAL_RTC_SSRU_EXTI_ENABLE_IT();
hrtc->State = HAL_RTC_STATE_READY;
/* Process Unlocked */
__HAL_UNLOCK(hrtc);
return HAL_OK;
}
/**
* @brief Deactivate SSR Underflow.
* @param hrtc RTC handle
* @retval HAL status
*/
HAL_StatusTypeDef HAL_RTCEx_DeactivateSSRU(RTC_HandleTypeDef *hrtc)
{
/* Process Locked */
__HAL_LOCK(hrtc);
hrtc->State = HAL_RTC_STATE_BUSY;
/* In case of interrupt mode is used, the interrupt source must disabled */
__HAL_RTC_SSRU_DISABLE_IT(hrtc, RTC_IT_SSRU);
hrtc->State = HAL_RTC_STATE_READY;
/* Process Unlocked */
__HAL_UNLOCK(hrtc);
return HAL_OK;
}
/**
* @brief Handle SSR underflow interrupt request.
* @param hrtc RTC handle
* @retval None
*/
void HAL_RTCEx_SSRUIRQHandler(RTC_HandleTypeDef *hrtc)
{
if ((RTC->MISR & RTC_MISR_SSRUMF) != 0u)
{
/* Immediately clear flags */
RTC->SCR = RTC_SCR_CSSRUF;
/* SSRU callback */
#if (USE_HAL_RTC_REGISTER_CALLBACKS == 1)
/* Call SSRUEvent registered Callback */
hrtc->SSRUEventCallback(hrtc);
#else
HAL_RTCEx_SSRUEventCallback(hrtc);
#endif /* USE_HAL_RTC_REGISTER_CALLBACKS */
}
/* Change RTC state */
hrtc->State = HAL_RTC_STATE_READY;
}
/**
* @brief SSR underflow callback.
* @param hrtc RTC handle
* @retval None
*/
__weak void HAL_RTCEx_SSRUEventCallback(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_SSRUEventCallback could be implemented in the user file
*/
}
/**
* @}
*/
/** @addtogroup RTCEx_Exported_Functions_Group4
* @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 RTC handle
* @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 Handle Alarm B Polling request.
* @param hrtc RTC handle
* @param Timeout Timeout duration
* @retval HAL status
*/
HAL_StatusTypeDef HAL_RTCEx_PollForAlarmBEvent(RTC_HandleTypeDef *hrtc, uint32_t Timeout)
{
uint32_t tickstart = HAL_GetTick();
while (READ_BIT(RTC->SR, RTC_SR_ALRBF) == 0U)
{
if (Timeout != HAL_MAX_DELAY)
{
if (((HAL_GetTick() - tickstart) > Timeout) || (Timeout == 0U))
{
hrtc->State = HAL_RTC_STATE_TIMEOUT;
return HAL_TIMEOUT;
}
}
}
/* Clear the Alarm Flag */
WRITE_REG(RTC->SCR, RTC_SCR_CALRBF);
/* Change RTC state */
hrtc->State = HAL_RTC_STATE_READY;
return HAL_OK;
}
/**
* @}
*/
/** @addtogroup RTCEx_Exported_Functions_Group5
* @brief Extended RTC Tamper functions
*
@verbatim
==============================================================================
##### Tamper functions #####
==============================================================================
[..]
(+) Before calling any tamper or internal tamper function, you have to call first
HAL_RTC_Init() function.
(+) In that one you can select to output tamper event on RTC pin.
[..]
(+) Enable the Tamper and configure the Tamper filter count, trigger Edge
or Level according to the Tamper filter (if equal to 0 Edge else Level)
value, sampling frequency, NoErase, MaskFlag, precharge or discharge and
Pull-UP, timestamp using the HAL_RTCEx_SetTamper() function.
You can configure Tamper with interrupt mode using HAL_RTCEx_SetTamper_IT() function.
(+) The default configuration of the Tamper erases the backup registers. To avoid
erase, enable the NoErase field on the TAMP_TAMPCR register.
[..]
(+) Enable Internal Tamper and configure it with interrupt, timestamp using
the HAL_RTCEx_SetInternalTamper() function.
@endverbatim
* @{
*/
/**
* @brief Set Tamper
* @param hrtc RTC handle
* @param sTamper Pointer to Tamper Structure.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_RTCEx_SetTamper(const RTC_HandleTypeDef *hrtc, const RTC_TamperTypeDef *sTamper)
{
uint32_t tmpreg;
/* Prevent unused argument(s) compilation warning */
UNUSED(hrtc);
/* Check the parameters */
assert_param(IS_RTC_TAMPER(sTamper->Tamper));
assert_param(IS_RTC_TAMPER_TRIGGER(sTamper->Trigger));
assert_param(IS_RTC_TAMPER_ERASE_MODE(sTamper->NoErase));
assert_param(IS_RTC_TAMPER_MASKFLAG_STATE(sTamper->MaskFlag));
assert_param(IS_RTC_TAMPER_TIMESTAMPONTAMPER_DETECTION(sTamper->TimeStampOnTamperDetection));
/* Mask flag only supported by TAMPER 1, 2 and 3 */
assert_param(!((sTamper->MaskFlag != RTC_TAMPERMASK_FLAG_DISABLE) && (sTamper->Tamper > RTC_TAMPER_3)));
assert_param(IS_RTC_TAMPER_FILTER(sTamper->Filter));
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));
/* Trigger and Filter have exclusive configurations */
assert_param(((sTamper->Filter != RTC_TAMPERFILTER_DISABLE) && ((sTamper->Trigger == RTC_TAMPERTRIGGER_LOWLEVEL) || \
(sTamper->Trigger == RTC_TAMPERTRIGGER_HIGHLEVEL)))
|| ((sTamper->Filter == RTC_TAMPERFILTER_DISABLE) && \
((sTamper->Trigger == RTC_TAMPERTRIGGER_RISINGEDGE) || \
(sTamper->Trigger == RTC_TAMPERTRIGGER_FALLINGEDGE))));
/* Configuration register 2 */
tmpreg = READ_REG(TAMP->CR2);
tmpreg &= ~((sTamper->Tamper << TAMP_CR2_TAMP1TRG_Pos) | (sTamper->Tamper << TAMP_CR2_TAMP1MSK_Pos) | \
(sTamper->Tamper << TAMP_CR2_TAMP1POM_Pos));
if ((sTamper->Trigger == RTC_TAMPERTRIGGER_HIGHLEVEL) || (sTamper->Trigger == RTC_TAMPERTRIGGER_FALLINGEDGE))
{
tmpreg |= (sTamper->Tamper << TAMP_CR2_TAMP1TRG_Pos);
}
if (sTamper->MaskFlag != RTC_TAMPERMASK_FLAG_DISABLE)
{
tmpreg |= (sTamper->Tamper << TAMP_CR2_TAMP1MSK_Pos);
}
if (sTamper->NoErase != RTC_TAMPER_ERASE_BACKUP_ENABLE)
{
tmpreg |= (sTamper->Tamper << TAMP_CR2_TAMP1POM_Pos);
}
WRITE_REG(TAMP->CR2, tmpreg);
/* Filter control register */
WRITE_REG(TAMP->FLTCR, sTamper->Filter | sTamper->SamplingFrequency | sTamper->PrechargeDuration | \
sTamper->TamperPullUp);
/* Timestamp on tamper */
if (READ_BIT(RTC->CR, RTC_CR_TAMPTS) != sTamper->TimeStampOnTamperDetection)
{
MODIFY_REG(RTC->CR, RTC_CR_TAMPTS, sTamper->TimeStampOnTamperDetection);
}
/* Control register 1 */
SET_BIT(TAMP->CR1, sTamper->Tamper);
return HAL_OK;
}
/**
* @brief Set Tamper in IT mode
* @param hrtc RTC handle
* @param sTamper Pointer to Tamper Structure.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_RTCEx_SetTamper_IT(const RTC_HandleTypeDef *hrtc, const RTC_TamperTypeDef *sTamper)
{
uint32_t tmpreg;
/* Prevent unused argument(s) compilation warning */
UNUSED(hrtc);
/* Check the parameters */
assert_param(IS_RTC_TAMPER(sTamper->Tamper));
assert_param(IS_RTC_TAMPER_TRIGGER(sTamper->Trigger));
assert_param(IS_RTC_TAMPER_ERASE_MODE(sTamper->NoErase));
assert_param(IS_RTC_TAMPER_MASKFLAG_STATE(sTamper->MaskFlag));
assert_param(IS_RTC_TAMPER_FILTER(sTamper->Filter));
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));
/* Configuration register 2 */
tmpreg = READ_REG(TAMP->CR2);
tmpreg &= ~((sTamper->Tamper << TAMP_CR2_TAMP1TRG_Pos) | (sTamper->Tamper << TAMP_CR2_TAMP1MSK_Pos) | \
(sTamper->Tamper << TAMP_CR2_TAMP1POM_Pos));
if (sTamper->Trigger != RTC_TAMPERTRIGGER_RISINGEDGE)
{
tmpreg |= (sTamper->Tamper << TAMP_CR2_TAMP1TRG_Pos);
}
if (sTamper->MaskFlag != RTC_TAMPERMASK_FLAG_DISABLE)
{
/* Feature only supported by TAMPER 1, 2 and 3 */
if (sTamper->Tamper < RTC_TAMPER_4)
{
tmpreg |= (sTamper->Tamper << TAMP_CR2_TAMP1MSK_Pos);
}
else
{
return HAL_ERROR;
}
}
if (sTamper->NoErase != RTC_TAMPER_ERASE_BACKUP_ENABLE)
{
tmpreg |= (sTamper->Tamper << TAMP_CR2_TAMP1POM_Pos);
}
WRITE_REG(TAMP->CR2, tmpreg);
/* Filter control register */
WRITE_REG(TAMP->FLTCR, sTamper->Filter | sTamper->SamplingFrequency | sTamper->PrechargeDuration | \
sTamper->TamperPullUp);
/* Timestamp on tamper */
if (READ_BIT(RTC->CR, RTC_CR_TAMPTS) != sTamper->TimeStampOnTamperDetection)
{
MODIFY_REG(RTC->CR, RTC_CR_TAMPTS, sTamper->TimeStampOnTamperDetection);
}
/* RTC Tamper Interrupt Configuration: EXTI configuration */
__HAL_RTC_TAMPER_EXTI_ENABLE_IT();
/* Interrupt enable register */
SET_BIT(TAMP->IER, sTamper->Tamper);
/* Control register 1 */
SET_BIT(TAMP->CR1, sTamper->Tamper);
return HAL_OK;
}
/**
* @brief Deactivate Tamper.
* @param hrtc RTC handle
* @param Tamper Selected tamper pin.
* This parameter can be a combination of the following values:
* @arg RTC_TAMPER_1
* @arg RTC_TAMPER_2
* @arg RTC_TAMPER_3
* @arg RTC_TAMPER_4
* @arg RTC_TAMPER_5
* @retval HAL status
*/
HAL_StatusTypeDef HAL_RTCEx_DeactivateTamper(const RTC_HandleTypeDef *hrtc, uint32_t Tamper)
{
UNUSED(hrtc);
assert_param(IS_RTC_TAMPER(Tamper));
/* Disable the selected Tamper pin */
CLEAR_BIT(TAMP->CR1, Tamper);
/* Clear tamper mask/noerase/trigger configuration */
CLEAR_BIT(TAMP->CR2, (Tamper << TAMP_CR2_TAMP1TRG_Pos) | (Tamper << TAMP_CR2_TAMP1MSK_Pos) | \
(Tamper << TAMP_CR2_TAMP1POM_Pos));
/* Clear tamper interrupt mode configuration */
CLEAR_BIT(TAMP->IER, Tamper);
/* Clear tamper interrupt and event flags (WO register) */
WRITE_REG(TAMP->SCR, Tamper);
return HAL_OK;
}
/**
* @brief Tamper event polling.
* @param hrtc RTC handle
* @param Tamper Selected tamper pin.
* This parameter can be a combination of the following values:
* @arg RTC_TAMPER_1
* @arg RTC_TAMPER_2
* @arg RTC_TAMPER_3
* @arg RTC_TAMPER_4
* @arg RTC_TAMPER_5
* @param Timeout Timeout duration
* @retval HAL status
*/
HAL_StatusTypeDef HAL_RTCEx_PollForTamperEvent(RTC_HandleTypeDef *hrtc, uint32_t Tamper, uint32_t Timeout)
{
UNUSED(hrtc);
assert_param(IS_RTC_TAMPER(Tamper));
uint32_t tickstart = HAL_GetTick();
/* Get the status of the Interrupt */
while (READ_BIT(TAMP->SR, Tamper) != Tamper)
{
if (Timeout != HAL_MAX_DELAY)
{
if (((HAL_GetTick() - tickstart) > Timeout) || (Timeout == 0U))
{
return HAL_TIMEOUT;
}
}
}
/* Clear the Tamper Flag */
WRITE_REG(TAMP->SCR, Tamper);
return HAL_OK;
}
/**
* @brief Set Internal Tamper
* @param hrtc RTC handle
* @param sIntTamper Pointer to Internal Tamper Structure.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_RTCEx_SetInternalTamper(const RTC_HandleTypeDef *hrtc,
const RTC_InternalTamperTypeDef *sIntTamper)
{
/* Prevent unused argument(s) compilation warning */
UNUSED(hrtc);
/* Check the parameters */
assert_param(IS_RTC_INTERNAL_TAMPER(sIntTamper->IntTamper));
assert_param(IS_RTC_TAMPER_TIMESTAMPONTAMPER_DETECTION(sIntTamper->TimeStampOnTamperDetection));
assert_param(IS_RTC_TAMPER_ERASE_MODE(sIntTamper->NoErase));
/* timestamp on internal tamper */
if (READ_BIT(RTC->CR, RTC_CR_TAMPTS) != sIntTamper->TimeStampOnTamperDetection)
{
MODIFY_REG(RTC->CR, RTC_CR_TAMPTS, sIntTamper->TimeStampOnTamperDetection);
}
/* Control register 1 */
SET_BIT(TAMP->CR1, sIntTamper->IntTamper);
if (sIntTamper->NoErase != RTC_TAMPER_ERASE_BACKUP_DISABLE)
{
/* Control register 3 */
SET_BIT(TAMP->CR3, (sIntTamper->IntTamper >> (TAMP_CR1_ITAMP3E_Pos - TAMP_CR3_ITAMP3POM_Pos)));
}
return HAL_OK;
}
/**
* @brief Set Internal Tamper in interrupt mode.
* @param hrtc RTC handle
* @param sIntTamper Pointer to Internal Tamper Structure.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_RTCEx_SetInternalTamper_IT(const RTC_HandleTypeDef *hrtc,
const RTC_InternalTamperTypeDef *sIntTamper)
{
/* Prevent unused argument(s) compilation warning */
UNUSED(hrtc);
/* Check the parameters */
assert_param(IS_RTC_INTERNAL_TAMPER(sIntTamper->IntTamper));
assert_param(IS_RTC_TAMPER_TIMESTAMPONTAMPER_DETECTION(sIntTamper->TimeStampOnTamperDetection));
assert_param(IS_RTC_TAMPER_ERASE_MODE(sIntTamper->NoErase));
/* timestamp on internal tamper */
if (READ_BIT(RTC->CR, RTC_CR_TAMPTS) != sIntTamper->TimeStampOnTamperDetection)
{
MODIFY_REG(RTC->CR, RTC_CR_TAMPTS, sIntTamper->TimeStampOnTamperDetection);
}
/* RTC Tamper Interrupt Configuration: EXTI configuration */
__HAL_RTC_TAMPER_EXTI_ENABLE_IT();
/* Interrupt enable register */
SET_BIT(TAMP->IER, sIntTamper->IntTamper);
/* Control register 1 */
SET_BIT(TAMP->CR1, sIntTamper->IntTamper);
if (sIntTamper->NoErase != RTC_TAMPER_ERASE_BACKUP_DISABLE)
{
/* Control register 3 */
SET_BIT(TAMP->CR3, (sIntTamper->IntTamper >> (TAMP_CR1_ITAMP3E_Pos - TAMP_CR3_ITAMP3POM_Pos)));
}
return HAL_OK;
}
/**
* @brief Deactivate Internal Tamper.
* @param hrtc RTC handle
* @param IntTamper Selected internal tamper event.
* This parameter can be any combination of existing internal tampers.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_RTCEx_DeactivateInternalTamper(const RTC_HandleTypeDef *hrtc, uint32_t IntTamper)
{
UNUSED(hrtc);
assert_param(IS_RTC_INTERNAL_TAMPER(IntTamper));
/* Disable the selected Tamper pin */
CLEAR_BIT(TAMP->CR1, IntTamper);
/* Clear internal tamper interrupt mode configuration */
CLEAR_BIT(TAMP->IER, IntTamper);
/* Clear internal tamper interrupt */
WRITE_REG(TAMP->SCR, IntTamper);
return HAL_OK;
}
/**
* @brief Internal Tamper event polling.
* @param hrtc RTC handle
* @param IntTamper selected tamper.
* This parameter can be any combination of existing internal tampers.
* @param Timeout Timeout duration
* @retval HAL status
*/
HAL_StatusTypeDef HAL_RTCEx_PollForInternalTamperEvent(RTC_HandleTypeDef *hrtc, uint32_t IntTamper, uint32_t Timeout)
{
UNUSED(hrtc);
assert_param(IS_RTC_INTERNAL_TAMPER(IntTamper));
uint32_t tickstart = HAL_GetTick();
/* Get the status of the Interrupt */
while (READ_BIT(TAMP->SR, IntTamper) != IntTamper)
{
if (Timeout != HAL_MAX_DELAY)
{
if (((HAL_GetTick() - tickstart) > Timeout) || (Timeout == 0U))
{
return HAL_TIMEOUT;
}
}
}
/* Clear the Tamper Flag */
WRITE_REG(TAMP->SCR, IntTamper);
return HAL_OK;
}
/**
* @brief Handle Tamper interrupt request.
* @param hrtc RTC handle
* @retval None
*/
void HAL_RTCEx_TamperIRQHandler(RTC_HandleTypeDef *hrtc)
{
/* Get interrupt status */
uint32_t tmp = READ_REG(TAMP->MISR);
/* Immediately clear flags */
WRITE_REG(TAMP->SCR, tmp);
/* Check Tamper1 status */
if ((tmp & RTC_TAMPER_1) == RTC_TAMPER_1)
{
#if (USE_HAL_RTC_REGISTER_CALLBACKS == 1)
/* Call Tamper 1 Event registered Callback */
hrtc->Tamper1EventCallback(hrtc);
#else
/* Tamper1 callback */
HAL_RTCEx_Tamper1EventCallback(hrtc);
#endif /* USE_HAL_RTC_REGISTER_CALLBACKS */
}
/* Check Tamper2 status */
if ((tmp & RTC_TAMPER_2) == RTC_TAMPER_2)
{
#if (USE_HAL_RTC_REGISTER_CALLBACKS == 1)
/* Call Tamper 2 Event registered Callback */
hrtc->Tamper2EventCallback(hrtc);
#else
/* Tamper2 callback */
HAL_RTCEx_Tamper2EventCallback(hrtc);
#endif /* USE_HAL_RTC_REGISTER_CALLBACKS */
}
/* Check Tamper3 status */
if ((tmp & RTC_TAMPER_3) == RTC_TAMPER_3)
{
#if (USE_HAL_RTC_REGISTER_CALLBACKS == 1)
/* Call Tamper 3 Event registered Callback */
hrtc->Tamper3EventCallback(hrtc);
#else
/* Tamper3 callback */
HAL_RTCEx_Tamper3EventCallback(hrtc);
#endif /* USE_HAL_RTC_REGISTER_CALLBACKS */
}
/* Check Tamper4 status */
if ((tmp & RTC_TAMPER_4) == RTC_TAMPER_4)
{
#if (USE_HAL_RTC_REGISTER_CALLBACKS == 1)
/* Call Tamper 4 Event registered Callback */
hrtc->Tamper4EventCallback(hrtc);
#else
/* Tamper4 callback */
HAL_RTCEx_Tamper4EventCallback(hrtc);
#endif /* USE_HAL_RTC_REGISTER_CALLBACKS */
}
/* Check Tamper5 status */
if ((tmp & RTC_TAMPER_5) == RTC_TAMPER_5)
{
#if (USE_HAL_RTC_REGISTER_CALLBACKS == 1)
/* Call Tamper 5 Event registered Callback */
hrtc->Tamper5EventCallback(hrtc);
#else
/* Tamper5 callback */
HAL_RTCEx_Tamper5EventCallback(hrtc);
#endif /* USE_HAL_RTC_REGISTER_CALLBACKS */
}
/* Check Internal Tamper3 status */
if ((tmp & RTC_INT_TAMPER_3) == RTC_INT_TAMPER_3)
{
#if (USE_HAL_RTC_REGISTER_CALLBACKS == 1)
/* Call Internal Tamper 3 Event registered Callback */
hrtc->InternalTamper3EventCallback(hrtc);
#else
/* Internal Tamper3 callback */
HAL_RTCEx_InternalTamper3EventCallback(hrtc);
#endif /* USE_HAL_RTC_REGISTER_CALLBACKS */
}
/* Check Internal Tamper4 status */
if ((tmp & RTC_INT_TAMPER_4) == RTC_INT_TAMPER_4)
{
#if (USE_HAL_RTC_REGISTER_CALLBACKS == 1)
/* Call Internal Tamper 4 Event registered Callback */
hrtc->InternalTamper4EventCallback(hrtc);
#else
/* Internal Tamper4 callback */
HAL_RTCEx_InternalTamper4EventCallback(hrtc);
#endif /* USE_HAL_RTC_REGISTER_CALLBACKS */
}
/* Check Internal Tamper5 status */
if ((tmp & RTC_INT_TAMPER_5) == RTC_INT_TAMPER_5)
{
#if (USE_HAL_RTC_REGISTER_CALLBACKS == 1)
/* Call Internal Tamper 5 Event registered Callback */
hrtc->InternalTamper5EventCallback(hrtc);
#else
/* Internal Tamper5 callback */
HAL_RTCEx_InternalTamper5EventCallback(hrtc);
#endif /* USE_HAL_RTC_REGISTER_CALLBACKS */
}
/* Check Internal Tamper6 status */
if ((tmp & RTC_INT_TAMPER_6) == RTC_INT_TAMPER_6)
{
#if (USE_HAL_RTC_REGISTER_CALLBACKS == 1)
/* Call Internal Tamper 6 Event registered Callback */
hrtc->InternalTamper6EventCallback(hrtc);
#else
/* Internal Tamper6 callback */
HAL_RTCEx_InternalTamper6EventCallback(hrtc);
#endif /* USE_HAL_RTC_REGISTER_CALLBACKS */
}
}
/**
* @brief Tamper 1 callback.
* @param hrtc RTC handle
* @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
*/
}
/**
* @brief Tamper 2 callback.
* @param hrtc RTC handle
* @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
*/
}
/**
* @brief Tamper 3 callback.
* @param hrtc RTC handle
* @retval None
*/
__weak void HAL_RTCEx_Tamper3EventCallback(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_Tamper3EventCallback could be implemented in the user file
*/
}
/**
* @brief Tamper 4 callback.
* @param hrtc RTC handle
* @retval None
*/
__weak void HAL_RTCEx_Tamper4EventCallback(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_Tamper4EventCallback could be implemented in the user file
*/
}
/**
* @brief Tamper 5 callback.
* @param hrtc RTC handle
* @retval None
*/
__weak void HAL_RTCEx_Tamper5EventCallback(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_Tamper5EventCallback could be implemented in the user file
*/
}
/**
* @brief Internal Tamper 3 callback.
* @param hrtc RTC handle
* @retval None
*/
__weak void HAL_RTCEx_InternalTamper3EventCallback(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_InternalTamper3EventCallback could be implemented in the user file
*/
}
/**
* @brief Internal Tamper 4 callback.
* @param hrtc RTC handle
* @retval None
*/
__weak void HAL_RTCEx_InternalTamper4EventCallback(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_InternalTamperEventCallback could be implemented in the user file
*/
}
/**
* @brief Internal Tamper 5 callback.
* @param hrtc RTC handle
* @retval None
*/
__weak void HAL_RTCEx_InternalTamper5EventCallback(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_InternalTamper5EventCallback could be implemented in the user file
*/
}
/**
* @brief Internal Tamper 6 callback.
* @param hrtc RTC handle
* @retval None
*/
__weak void HAL_RTCEx_InternalTamper6EventCallback(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_InternalTamper6EventCallback could be implemented in the user file
*/
}
/**
* @}
*/
/** @addtogroup RTCEx_Exported_Functions_Group6
* @brief Extended RTC Backup register functions
*
@verbatim
===============================================================================
##### Extended RTC Backup register functions #####
===============================================================================
[..]
(+) Before calling any tamper or internal tamper function, you have to call first
HAL_RTC_Init() function.
(+) In that ine you can select to output tamper event on RTC pin.
[..]
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
@endverbatim
* @{
*/
/**
* @brief Write a data in a specified RTC Backup data register.
* @param hrtc RTC handle
* @param BackupRegister RTC Backup data Register number.
* This parameter can be RTC_BKP_DRx where x can be from 0 to RTC_BACKUP_NB
* @param Data Data to be written in the specified Backup data register.
* @retval None
*/
void HAL_RTCEx_BKUPWrite(const RTC_HandleTypeDef *hrtc, uint32_t BackupRegister, uint32_t Data)
{
uint32_t tmp;
UNUSED(hrtc);
/* Check the parameters */
assert_param(IS_RTC_BKP(BackupRegister));
tmp = (uint32_t) &(TAMP->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 RTC handle
* @param BackupRegister RTC Backup data Register number.
* This parameter can be RTC_BKP_DRx where x can be from 0 to RTC_BACKUP_NB
* @retval Read value
*/
uint32_t HAL_RTCEx_BKUPRead(const RTC_HandleTypeDef *hrtc, uint32_t BackupRegister)
{
uint32_t tmp;
UNUSED(hrtc);
/* Check the parameters */
assert_param(IS_RTC_BKP(BackupRegister));
tmp = (uint32_t) &(TAMP->BKP0R);
tmp += (BackupRegister * 4U);
/* Read the specified register */
return (*(__IO uint32_t *)tmp);
}
/**
* @brief Reset the RTC Backup data Register and the device secrets.
* @param hrtc RTC handle
* @retval None
*/
void HAL_RTCEx_BKUPErase(const RTC_HandleTypeDef *hrtc)
{
UNUSED(hrtc);
WRITE_REG(TAMP->CR2, TAMP_CR2_BKERASE);
}
/**
* @}
*/
/**
* @}
*/
#endif /* HAL_RTC_MODULE_ENABLED */
/**
* @}
*/
/**
* @}
*/
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