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/**
******************************************************************************
* @file stm32f2xx_hal_rtc_ex.c
* @author MCD Application Team
* @brief RTC HAL module driver.
* This file provides firmware functions to manage the following
* functionalities of the Real Time Clock (RTC) Extension peripheral:
* + RTC Time Stamp functions
* + RTC Tamper functions
* + RTC Wake-up functions
* + Extension Control functions
* + Extension RTC features functions
*
@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 Wake-up configuration ***
================================
[..]
(+) To configure the RTC Wake-up Clock source and Counter use the HAL_RTCEx_SetWakeUpTimer()
function. You can also configure the RTC Wake-up timer in interrupt mode
using the HAL_RTCEx_SetWakeUpTimer_IT() function.
(+) To read the RTC Wake-up Counter register, use the HAL_RTCEx_GetWakeUpTimer()
function.
*** TimeStamp configuration ***
===============================
[..]
(+) Configure the RTC_AFx trigger and 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.
(+) 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. The corresponding pin is also selected by HAL_RTCEx_SetTimeStamp()
or HAL_RTCEx_SetTimeStamp_IT() function.
*** Tamper configuration ***
============================
[..]
(+) Enable the RTC Tamper and configure the trigger using 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() function.
*** 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.
@endverbatim
******************************************************************************
* @attention
*
* <h2><center>© Copyright (c) 2016 STMicroelectronics.
* All rights reserved.</center></h2>
*
* This software component is licensed by ST under BSD 3-Clause license,
* the "License"; You may not use this file except in compliance with the
* License. You may obtain a copy of the License at:
* opensource.org/licenses/BSD-3-Clause
*
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "stm32f2xx_hal.h"
/** @addtogroup STM32F2xx_HAL_Driver
* @{
*/
/** @defgroup RTCEx RTCEx
* @brief RTC HAL module driver
* @{
*/
#ifdef HAL_RTC_MODULE_ENABLED
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/* Private functions ---------------------------------------------------------*/
/** @defgroup RTCEx_Exported_Functions RTC 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 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.
* @arg RTC_TIMESTAMPPIN_POS1: PI8 is selected as RTC TimeStamp Pin.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_RTCEx_SetTimeStamp(RTC_HandleTypeDef *hrtc, uint32_t TimeStampEdge, uint32_t RTC_TimeStampPin)
{
uint32_t tmpreg = 0U;
/* Check the parameters */
assert_param(IS_TIMESTAMP_EDGE(TimeStampEdge));
assert_param(IS_RTC_TIMESTAMP_PIN(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 */
tmpreg = (uint32_t)(hrtc->Instance->CR & (uint32_t)~(RTC_CR_TSEDGE | RTC_CR_TSE));
tmpreg |= TimeStampEdge;
/* Disable the write protection for RTC registers */
__HAL_RTC_WRITEPROTECTION_DISABLE(hrtc);
hrtc->Instance->TAFCR &= (uint32_t)~RTC_TAFCR_TSINSEL;
hrtc->Instance->TAFCR |= (uint32_t)(RTC_TimeStampPin);
/* Configure the Time Stamp TSEDGE and Enable bits */
hrtc->Instance->CR = (uint32_t)tmpreg;
__HAL_RTC_TIMESTAMP_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 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 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.
* @arg RTC_TIMESTAMPPIN_POS1: PI8 is selected as RTC TimeStamp Pin.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_RTCEx_SetTimeStamp_IT(RTC_HandleTypeDef *hrtc, uint32_t TimeStampEdge, uint32_t RTC_TimeStampPin)
{
uint32_t tmpreg = 0U;
/* Check the parameters */
assert_param(IS_TIMESTAMP_EDGE(TimeStampEdge));
assert_param(IS_RTC_TIMESTAMP_PIN(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 */
tmpreg = (uint32_t)(hrtc->Instance->CR & (uint32_t)~(RTC_CR_TSEDGE | RTC_CR_TSE));
tmpreg |= TimeStampEdge;
/* Disable the write protection for RTC registers */
__HAL_RTC_WRITEPROTECTION_DISABLE(hrtc);
/* Configure the Time Stamp TSEDGE and Enable bits */
hrtc->Instance->CR = (uint32_t)tmpreg;
hrtc->Instance->TAFCR &= (uint32_t)~RTC_TAFCR_TSINSEL;
hrtc->Instance->TAFCR |= (uint32_t)(RTC_TimeStampPin);
/* Clear RTC Timestamp flag */
__HAL_RTC_TIMESTAMP_CLEAR_FLAG(hrtc, RTC_FLAG_TSF);
__HAL_RTC_TIMESTAMP_ENABLE(hrtc);
/* Enable IT timestamp */
__HAL_RTC_TIMESTAMP_ENABLE_IT(hrtc, RTC_IT_TS);
/* RTC timestamp Interrupt Configuration: EXTI configuration */
__HAL_RTC_TAMPER_TIMESTAMP_EXTI_ENABLE_IT();
EXTI->RTSR |= RTC_EXTI_LINE_TAMPER_TIMESTAMP_EVENT;
/* 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 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 Time Stamp 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:
* RTC_FORMAT_BIN: Binary data format
* 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, 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_TR_HT | RTC_TR_HU)) >> 16U);
sTimeStamp->Minutes = (uint8_t)((tmptime & (RTC_TR_MNT | RTC_TR_MNU)) >> 8U);
sTimeStamp->Seconds = (uint8_t)(tmptime & (RTC_TR_ST | RTC_TR_SU));
sTimeStamp->TimeFormat = (uint8_t)((tmptime & (RTC_TR_PM)) >> 16U);
/* Fill the Date structure fields with the read parameters */
sTimeStampDate->Year = 0;
sTimeStampDate->Month = (uint8_t)((tmpdate & (RTC_DR_MT | RTC_DR_MU)) >> 8U);
sTimeStampDate->Date = (uint8_t)(tmpdate & (RTC_DR_DT | RTC_DR_DU));
sTimeStampDate->WeekDay = (uint8_t)((tmpdate & (RTC_DR_WDU)) >> 13U);
/* 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 we disable the tamper interrupt for all tampers.
* @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));
/* Process Locked */
__HAL_LOCK(hrtc);
hrtc->State = HAL_RTC_STATE_BUSY;
tmpreg = ((uint32_t)sTamper->Tamper | (uint32_t)sTamper->PinSelection | (uint32_t)(sTamper->Trigger));
hrtc->Instance->TAFCR &= (uint32_t)~((uint32_t)RTC_TAFCR_TAMP1E | (uint32_t)RTC_TAFCR_TAMP1TRG | (uint32_t)RTC_TAFCR_TAMPINSEL);
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 we force the tamper interrupt for all tampers.
* @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));
/* Process Locked */
__HAL_LOCK(hrtc);
hrtc->State = HAL_RTC_STATE_BUSY;
tmpreg = ((uint32_t)sTamper->Tamper | (uint32_t)sTamper->PinSelection | (uint32_t)sTamper->Trigger);
hrtc->Instance->TAFCR &= (uint32_t)~((uint32_t)RTC_TAFCR_TAMP1E | (uint32_t)RTC_TAFCR_TAMP1TRG | (uint32_t)RTC_TAFCR_TAMPINSEL | (uint32_t)RTC_TAFCR_TAMPIE);
hrtc->Instance->TAFCR |= tmpreg;
/* Configure the Tamper Interrupt in the RTC_TAFCR */
hrtc->Instance->TAFCR |= (uint32_t)RTC_TAFCR_TAMPIE;
/* Clear RTC Tamper 1 flag */
__HAL_RTC_TAMPER_CLEAR_FLAG(hrtc, RTC_FLAG_TAMP1F);
/* RTC Tamper Interrupt Configuration: EXTI configuration */
__HAL_RTC_TAMPER_TIMESTAMP_EXTI_ENABLE_IT();
EXTI->RTSR |= RTC_EXTI_LINE_TAMPER_TIMESTAMP_EVENT;
hrtc->State = HAL_RTC_STATE_READY;
/* Process Unlocked */
__HAL_UNLOCK(hrtc);
return HAL_OK;
}
/**
* @brief Deactivates Tamper.
* @param hrtc pointer to a RTC_HandleTypeDef structure that contains
* the configuration information for RTC.
* @param Tamper Selected tamper pin.
* This parameter can be RTC_Tamper_1.
* @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 This function handles TimeStamp 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 interrupts source enable status */
if (__HAL_RTC_TAMPER_GET_IT_SOURCE(hrtc, RTC_IT_TAMP | RTC_IT_TAMP1) != 0U)
{
/* Get the pending status of the Tamper 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);
}
}
/* 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_RTC_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_RTC_Tamper1EventCallback could be implemented in the user file
*/
}
/**
* @brief This function 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) == RESET)
{
if (__HAL_RTC_TIMESTAMP_GET_FLAG(hrtc, RTC_FLAG_TSOVF) != RESET)
{
/* 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;
}
if (Timeout != HAL_MAX_DELAY)
{
if ((Timeout == 0U) || ((HAL_GetTick() - tickstart) > Timeout))
{
hrtc->State = HAL_RTC_STATE_TIMEOUT;
return HAL_TIMEOUT;
}
}
}
/* Change RTC state */
hrtc->State = HAL_RTC_STATE_READY;
return HAL_OK;
}
/**
* @brief This function handles Tamper1 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) == RESET)
{
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;
}
/**
* @}
*/
/** @defgroup RTCEx_Exported_Functions_Group2 RTC Wake-up functions
* @brief RTC Wake-up functions
*
@verbatim
===============================================================================
##### RTC Wake-up functions #####
===============================================================================
[..] This section provides functions allowing to configure Wake-up feature
@endverbatim
* @{
*/
/**
* @brief Sets wake up timer.
* @param hrtc pointer to a RTC_HandleTypeDef structure that contains
* the configuration information for RTC.
* @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 = 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 wake up timer enabled*/
if ((hrtc->Instance->CR & RTC_CR_WUTE) != RESET)
{
tickstart = HAL_GetTick();
/* Wait till RTC WUTWF flag is reset and if Time out is reached exit */
while (__HAL_RTC_WAKEUPTIMER_GET_FLAG(hrtc, RTC_FLAG_WUTWF) == SET)
{
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;
}
}
}
__HAL_RTC_WAKEUPTIMER_DISABLE(hrtc);
/* Get tick */
tickstart = HAL_GetTick();
/* Wait till RTC WUTWF flag is set and if Time out is reached exit */
while (__HAL_RTC_WAKEUPTIMER_GET_FLAG(hrtc, RTC_FLAG_WUTWF) == RESET)
{
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 Wake-up 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 Wake-up Timer counter */
hrtc->Instance->WUTR = (uint32_t)WakeUpCounter;
/* Enable the Wake-up 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 wake up timer with interrupt
* @param hrtc pointer to a RTC_HandleTypeDef structure that contains
* the configuration information for RTC.
* @param WakeUpCounter Wake up counter
* @param WakeUpClock Wake up clock
* @retval HAL status
*/
HAL_StatusTypeDef HAL_RTCEx_SetWakeUpTimer_IT(RTC_HandleTypeDef *hrtc, uint32_t WakeUpCounter, uint32_t WakeUpClock)
{
__IO uint32_t count;
/* 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 wake up timer enabled*/
if ((hrtc->Instance->CR & RTC_CR_WUTE) != RESET)
{
/* Wait till RTC WUTWF flag is reset and if Time out is reached exit */
count = RTC_TIMEOUT_VALUE * (SystemCoreClock / 32U / 1000U);
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) == SET);
}
__HAL_RTC_WAKEUPTIMER_DISABLE(hrtc);
/* Wait till RTC WUTWF flag is set and if Time out is reached exit */
count = RTC_TIMEOUT_VALUE * (SystemCoreClock / 32U / 1000U);
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) == RESET);
/* Configure the Wake-up Timer counter */
hrtc->Instance->WUTR = (uint32_t)WakeUpCounter;
/* Clear the Wake-up 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;
/* RTC WakeUpTimer Interrupt Configuration: EXTI configuration */
__HAL_RTC_WAKEUPTIMER_EXTI_ENABLE_IT();
EXTI->RTSR |= RTC_EXTI_LINE_WAKEUPTIMER_EVENT;
/* Clear RTC Wake Up timer Flag */
__HAL_RTC_WAKEUPTIMER_CLEAR_FLAG(hrtc, RTC_FLAG_WUTF);
/* Configure the Interrupt in the RTC_CR register */
__HAL_RTC_WAKEUPTIMER_ENABLE_IT(hrtc, RTC_IT_WUT);
/* Enable the Wake-up 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 wake up timer counter.
* @param hrtc pointer to a RTC_HandleTypeDef structure that contains
* the configuration information for RTC.
* @retval HAL status
*/
uint32_t 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 Wake-up 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 Time out is reached exit */
while (__HAL_RTC_WAKEUPTIMER_GET_FLAG(hrtc, RTC_FLAG_WUTWF) == RESET)
{
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 wake up 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 This function handles Wake Up Timer interrupt request.
* @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 WAKEUPTIMER interrupt source enable status */
if (__HAL_RTC_WAKEUPTIMER_GET_IT_SOURCE(hrtc, RTC_IT_WUT) != RESET)
{
/* Get the pending status of the WAKEUPTIMER Interrupt */
if(__HAL_RTC_WAKEUPTIMER_GET_FLAG(hrtc, RTC_FLAG_WUTF) != RESET)
{
/* WAKEUPTIMER callback */
#if (USE_HAL_RTC_REGISTER_CALLBACKS == 1)
hrtc->WakeUpTimerEventCallback(hrtc);
#else
HAL_RTCEx_WakeUpTimerEventCallback(hrtc);
#endif /* USE_HAL_RTC_REGISTER_CALLBACKS */
/* Clear the WAKEUPTIMER 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 Wake Up 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_RTC_WakeUpTimerEventCallback could be implemented in the user file
*/
}
/**
* @brief This function handles Wake Up 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) == RESET)
{
if (Timeout != HAL_MAX_DELAY)
{
if ((Timeout == 0U) || ((HAL_GetTick() - tickstart) > Timeout))
{
hrtc->State = HAL_RTC_STATE_TIMEOUT;
return HAL_TIMEOUT;
}
}
}
/* Clear the WAKEUPTIMER 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 Extension Peripheral Control functions
* @brief Extension Peripheral Control functions
*
@verbatim
===============================================================================
##### Extension 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
(+) Configure the Synchronization Shift Control Settings.
(+) Configure the Calibration Pinout (RTC_CALIB).
(+) Deactivate the Calibration Pinout (RTC_CALIB).
(+) Enable the RTC reference clock detection.
(+) Disable the RTC reference clock detection.
@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)
{
/* 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);
/* 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 the Coarse Calibration */
__HAL_RTC_COARSE_CALIB_ENABLE(hrtc);
/* Set the coarse calibration value */
hrtc->Instance->CALIBR = (uint32_t)(CalibSign | Value);
/* Exit Initialization mode */
hrtc->Instance->ISR &= (uint32_t)~RTC_ISR_INIT;
}
/* Enable the write protection for RTC registers */
__HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
/* Change state */
hrtc->State = HAL_RTC_STATE_READY;
/* Process Unlocked */
__HAL_UNLOCK(hrtc);
return HAL_OK;
}
/**
* @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)
{
/* 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 the Coarse Calibration */
__HAL_RTC_COARSE_CALIB_DISABLE(hrtc);
/* Exit Initialization mode */
hrtc->Instance->ISR &= (uint32_t)~RTC_ISR_INIT;
}
/* Enable the write protection for RTC registers */
__HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
/* Change state */
hrtc->State = HAL_RTC_STATE_READY;
/* Process Unlocked */
__HAL_UNLOCK(hrtc);
return HAL_OK;
}
/**
* @brief Configure the Calibration Pinout (RTC_CALIB).
* @param hrtc RTC handle
* @retval HAL status
*/
HAL_StatusTypeDef HAL_RTCEx_SetCalibrationOutPut(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_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).
* @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)
{
/* 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
{
__HAL_RTC_CLOCKREF_DETECTION_ENABLE(hrtc);
/* Exit Initialization mode */
hrtc->Instance->ISR &= (uint32_t)~RTC_ISR_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 pointer to a RTC_HandleTypeDef structure that contains
* the configuration information for RTC.
* @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
{
__HAL_RTC_CLOCKREF_DETECTION_DISABLE(hrtc);
/* Exit Initialization mode */
hrtc->Instance->ISR &= (uint32_t)~RTC_ISR_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;
}
/**
* @}
*/
/** @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_RTC_AlarmBEventCallback could be implemented in the user file
*/
}
/**
* @brief This function handles AlarmB 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();
while (__HAL_RTC_ALARM_GET_FLAG(hrtc, RTC_FLAG_ALRBF) == RESET)
{
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 */
/**
* @}
*/
/**
* @}
*/
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/