/**
******************************************************************************
* @file stm32l1xx_hal_rtc_ex.c
* @author MCD Application Team
* @brief Extended RTC HAL module driver.
* This file provides firmware functions to manage the following
* functionalities of the Real Time Clock (RTC) Extended peripheral:
* + RTC Time Stamp functions
* + RTC Tamper functions
* + RTC Wake-up functions
* + Extended Control functions
* + Extended 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 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.
*** 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 to RTC_AF1 (PC13).
*** 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, 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 TAMPER1 alternate function can be mapped to RTC_AF1 (PC13).
*** 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) 2017 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 "stm32l1xx_hal.h"
/** @addtogroup STM32L1xx_HAL_Driver
* @{
*/
/** @addtogroup RTCEx
* @brief RTC Extended HAL module driver
* @{
*/
#ifdef HAL_RTC_MODULE_ENABLED
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/* Exported functions --------------------------------------------------------*/
/** @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.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_RTCEx_SetTimeStamp(RTC_HandleTypeDef *hrtc, uint32_t TimeStampEdge)
{
uint32_t tmpreg;
/* Check the parameters */
assert_param(IS_TIMESTAMP_EDGE(TimeStampEdge));
/* 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;
__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 Set TimeStamp with Interrupt.
* @param hrtc RTC handle
* @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.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_RTCEx_SetTimeStamp_IT(RTC_HandleTypeDef *hrtc, uint32_t TimeStampEdge)
{
uint32_t tmpreg;
/* Check the parameters */
assert_param(IS_TIMESTAMP_EDGE(TimeStampEdge));
/* 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;
__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();
__HAL_RTC_TAMPER_TIMESTAMP_EXTI_ENABLE_RISING_EDGE();
/* 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 Deactivate TimeStamp.
* @param hrtc RTC handle
* @retval HAL status
*/
HAL_StatusTypeDef HAL_RTCEx_DeactivateTimeStamp(RTC_HandleTypeDef *hrtc)
{
uint32_t tmpreg;
/* 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 Get the RTC TimeStamp value.
* @param hrtc RTC handle
* @param sTimeStamp Pointer to Time structure
* @param sTimeStampDate Pointer to Date structure
* @param Format specifies the format of the entered parameters.
* This parameter can be one of the following values:
* @arg RTC_FORMAT_BIN: Binary data format
* @arg RTC_FORMAT_BCD: BCD data format
* @retval HAL status
*/
HAL_StatusTypeDef HAL_RTCEx_GetTimeStamp(RTC_HandleTypeDef *hrtc, RTC_TimeTypeDef *sTimeStamp, RTC_DateTypeDef *sTimeStampDate, uint32_t Format)
{
uint32_t tmptime, tmpdate;
/* 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)) >> 16);
#if defined(STM32L100xBA) || defined (STM32L151xBA) || defined (STM32L152xBA) || defined(STM32L100xC) || defined (STM32L151xC) || defined (STM32L152xC) || defined (STM32L162xC) || defined(STM32L151xCA) || defined (STM32L151xD) || defined (STM32L152xCA) || defined (STM32L152xD) || defined (STM32L162xCA) || defined (STM32L162xD) || defined(STM32L151xE) || defined(STM32L151xDX) || defined (STM32L152xE) || defined (STM32L152xDX) || defined (STM32L162xE) || defined (STM32L162xDX)
sTimeStamp->SubSeconds = (uint32_t)((hrtc->Instance->TSSSR) & RTC_TSSSR_SS);
#endif /* STM32L100xBA || STM32L151xBA || STM32L152xBA || STM32L100xC || STM32L151xC || STM32L152xC || STM32L162xC || STM32L151xCA || STM32L151xD || STM32L152xCA || STM32L152xD || STM32L162xCA || STM32L162xD || STM32L151xE || STM32L151xDX || STM32L152xE || STM32L152xDX || STM32L162xE || STM32L162xDX */
/* Fill the Date structure fields with the read parameters */
sTimeStampDate->Year = 0U;
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 Set Tamper
* @note By calling this API we disable the tamper interrupt for all tampers.
* @param hrtc RTC handle
* @param sTamper Pointer to Tamper Structure.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_RTCEx_SetTamper(RTC_HandleTypeDef *hrtc, RTC_TamperTypeDef *sTamper)
{
uint32_t tmpreg;
/* Check the parameters */
assert_param(IS_RTC_TAMPER(sTamper->Tamper));
assert_param(IS_RTC_TAMPER_TRIGGER(sTamper->Trigger));
#if defined(STM32L100xBA) || defined (STM32L151xBA) || defined (STM32L152xBA) || defined(STM32L100xC) || defined (STM32L151xC) || defined (STM32L152xC) || defined (STM32L162xC) || defined(STM32L151xCA) || defined (STM32L151xD) || defined (STM32L152xCA) || defined (STM32L152xD) || defined (STM32L162xCA) || defined (STM32L162xD) || defined(STM32L151xE) || defined(STM32L151xDX) || defined (STM32L152xE) || defined (STM32L152xDX) || defined (STM32L162xE) || defined (STM32L162xDX)
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));
#endif /* STM32L100xBA || STM32L151xBA || STM32L152xBA || STM32L100xC || STM32L151xC || STM32L152xC || STM32L162xC || STM32L151xCA || STM32L151xD || STM32L152xCA || STM32L152xD || STM32L162xCA || STM32L162xD || STM32L151xE || STM32L151xDX || STM32L152xE || STM32L152xDX || STM32L162xE || STM32L162xDX */
/* Process Locked */
__HAL_LOCK(hrtc);
hrtc->State = HAL_RTC_STATE_BUSY;
#if defined(STM32L100xBA) || defined (STM32L151xBA) || defined (STM32L152xBA) || defined(STM32L100xC) || defined (STM32L151xC) || defined (STM32L152xC) || defined (STM32L162xC) || defined(STM32L151xCA) || defined (STM32L151xD) || defined (STM32L152xCA) || defined (STM32L152xD) || defined (STM32L162xCA) || defined (STM32L162xD) || defined(STM32L151xE) || defined(STM32L151xDX) || defined (STM32L152xE) || defined (STM32L152xDX) || defined (STM32L162xE) || defined (STM32L162xDX)
if ((sTamper->Trigger == RTC_TAMPERTRIGGER_RISINGEDGE))
{
/* Configure the RTC_TAFCR register */
sTamper->Trigger = RTC_TAMPERTRIGGER_RISINGEDGE;
}
else
{
sTamper->Trigger = (uint32_t)(sTamper->Tamper << 1);
}
tmpreg = ((uint32_t)sTamper->Tamper | (uint32_t)sTamper->Trigger | (uint32_t)sTamper->Filter | \
(uint32_t)sTamper->SamplingFrequency | (uint32_t)sTamper->PrechargeDuration | \
(uint32_t)sTamper->TamperPullUp | sTamper->TimeStampOnTamperDetection);
hrtc->Instance->TAFCR &= (uint32_t)~((uint32_t)sTamper->Tamper | (uint32_t)(sTamper->Tamper << 1) | (uint32_t)RTC_TAFCR_TAMPTS | \
(uint32_t)RTC_TAFCR_TAMPFREQ | (uint32_t)RTC_TAFCR_TAMPFLT | (uint32_t)RTC_TAFCR_TAMPPRCH | \
(uint32_t)RTC_TAFCR_TAMPPUDIS | (uint32_t)RTC_TAFCR_TAMPIE);
#else
tmpreg = ((uint32_t)sTamper->Tamper | (uint32_t)(sTamper->Trigger));
hrtc->Instance->TAFCR &= (uint32_t)~((uint32_t)RTC_TAFCR_TAMP1E | (uint32_t)RTC_TAFCR_TAMP1TRG);
#endif /* STM32L100xBA || STM32L151xBA || STM32L152xBA || STM32L100xC || STM32L151xC || STM32L152xC || STM32L162xC || STM32L151xCA || STM32L151xD || STM32L152xCA || STM32L152xD || STM32L162xCA || STM32L162xD || STM32L151xE || STM32L151xDX || STM32L152xE || STM32L152xDX || STM32L162xE || STM32L162xDX */
hrtc->Instance->TAFCR |= tmpreg;
hrtc->State = HAL_RTC_STATE_READY;
/* Process Unlocked */
__HAL_UNLOCK(hrtc);
return HAL_OK;
}
/**
* @brief Set Tamper with interrupt.
* @note By calling this API we force the tamper interrupt for all tampers.
* @param hrtc RTC handle
* @param sTamper Pointer to RTC Tamper.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_RTCEx_SetTamper_IT(RTC_HandleTypeDef *hrtc, RTC_TamperTypeDef *sTamper)
{
uint32_t tmpreg;
/* Check the parameters */
assert_param(IS_RTC_TAMPER(sTamper->Tamper));
assert_param(IS_RTC_TAMPER_TRIGGER(sTamper->Trigger));
#if defined(STM32L100xBA) || defined (STM32L151xBA) || defined (STM32L152xBA) || defined(STM32L100xC) || defined (STM32L151xC) || defined (STM32L152xC) || defined (STM32L162xC) || defined(STM32L151xCA) || defined (STM32L151xD) || defined (STM32L152xCA) || defined (STM32L152xD) || defined (STM32L162xCA) || defined (STM32L162xD) || defined(STM32L151xE) || defined(STM32L151xDX) || defined (STM32L152xE) || defined (STM32L152xDX) || defined (STM32L162xE) || defined (STM32L162xDX)
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));
#endif /* STM32L100xBA || STM32L151xBA || STM32L152xBA || STM32L100xC || STM32L151xC || STM32L152xC || STM32L162xC || STM32L151xCA || STM32L151xD || STM32L152xCA || STM32L152xD || STM32L162xCA || STM32L162xD || STM32L151xE || STM32L151xDX || STM32L152xE || STM32L152xDX || STM32L162xE || STM32L162xDX */
/* Process Locked */
__HAL_LOCK(hrtc);
hrtc->State = HAL_RTC_STATE_BUSY;
#if defined(STM32L100xBA) || defined (STM32L151xBA) || defined (STM32L152xBA) || defined(STM32L100xC) || defined (STM32L151xC) || defined (STM32L152xC) || defined (STM32L162xC) || defined(STM32L151xCA) || defined (STM32L151xD) || defined (STM32L152xCA) || defined (STM32L152xD) || defined (STM32L162xCA) || defined (STM32L162xD) || defined(STM32L151xE) || defined(STM32L151xDX) || defined (STM32L152xE) || defined (STM32L152xDX) || defined (STM32L162xE) || defined (STM32L162xDX)
/* Configure the tamper trigger */
if ((sTamper->Trigger == RTC_TAMPERTRIGGER_RISINGEDGE))
{
sTamper->Trigger = RTC_TAMPERTRIGGER_RISINGEDGE;
}
else
{
sTamper->Trigger = (uint32_t)(sTamper->Tamper << 1);
}
tmpreg = ((uint32_t)sTamper->Tamper | (uint32_t)sTamper->Trigger | (uint32_t)sTamper->Filter | \
(uint32_t)sTamper->SamplingFrequency | (uint32_t)sTamper->PrechargeDuration | \
(uint32_t)sTamper->TamperPullUp | sTamper->TimeStampOnTamperDetection);
hrtc->Instance->TAFCR &= (uint32_t)~((uint32_t)sTamper->Tamper | (uint32_t)(sTamper->Tamper << 1) | (uint32_t)RTC_TAFCR_TAMPTS | \
(uint32_t)RTC_TAFCR_TAMPFREQ | (uint32_t)RTC_TAFCR_TAMPFLT | (uint32_t)RTC_TAFCR_TAMPPRCH | \
(uint32_t)RTC_TAFCR_TAMPPUDIS);
#else
tmpreg = ((uint32_t)sTamper->Tamper | (uint32_t)sTamper->Trigger);
hrtc->Instance->TAFCR &= (uint32_t)~((uint32_t)RTC_TAFCR_TAMP1E | (uint32_t)RTC_TAFCR_TAMP1TRG | (uint32_t)RTC_TAFCR_TAMPIE);
#endif /* STM32L100xBA || STM32L151xBA || STM32L152xBA || STM32L100xC || STM32L151xC || STM32L152xC || STM32L162xC || STM32L151xCA || STM32L151xD || STM32L152xCA || STM32L152xD || STM32L162xCA || STM32L162xD || STM32L151xE || STM32L151xDX || STM32L152xE || STM32L152xDX || STM32L162xE || STM32L162xDX */
hrtc->Instance->TAFCR |= tmpreg;
/* Configure the Tamper Interrupt in the RTC_TAFCR */
hrtc->Instance->TAFCR |= (uint32_t)RTC_TAFCR_TAMPIE;
/* RTC Tamper Interrupt Configuration: EXTI configuration */
__HAL_RTC_TAMPER_TIMESTAMP_EXTI_ENABLE_IT();
__HAL_RTC_TAMPER_TIMESTAMP_EXTI_ENABLE_RISING_EDGE();
hrtc->State = HAL_RTC_STATE_READY;
/* Process Unlocked */
__HAL_UNLOCK(hrtc);
return HAL_OK;
}
/**
* @brief Deactivate Tamper.
* @param hrtc RTC handle
* @param Tamper Selected tamper pin.
* This parameter can be a value of @ref RTCEx_Tamper_Pins_Definitions
* @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 Handle TimeStamp interrupt request.
* @param hrtc RTC handle
* @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 Tamper1 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 Tamper1 Interrupt */
if (__HAL_RTC_TAMPER_GET_FLAG(hrtc, RTC_FLAG_TAMP1F) != 0U)
{
/* Tamper1 callback */
#if (USE_HAL_RTC_REGISTER_CALLBACKS == 1)
hrtc->Tamper1EventCallback(hrtc);
#else
HAL_RTCEx_Tamper1EventCallback(hrtc);
#endif /* USE_HAL_RTC_REGISTER_CALLBACKS */
/* Clear the Tamper1 interrupt pending bit */
__HAL_RTC_TAMPER_CLEAR_FLAG(hrtc, RTC_FLAG_TAMP1F);
}
}
#if defined(STM32L100xBA) || defined (STM32L151xBA) || defined (STM32L152xBA) || defined(STM32L100xC) || defined (STM32L151xC) || defined (STM32L152xC) || defined (STM32L162xC) || defined(STM32L151xCA) || defined (STM32L151xD) || defined (STM32L152xCA) || defined (STM32L152xD) || defined (STM32L162xCA) || defined (STM32L162xD) || defined(STM32L151xE) || defined(STM32L151xDX) || defined (STM32L152xE) || defined (STM32L152xDX) || defined (STM32L162xE) || defined (STM32L162xDX)
/* Get the Tamper2 interrupts source enable status */
if (__HAL_RTC_TAMPER_GET_IT_SOURCE(hrtc, RTC_IT_TAMP | RTC_IT_TAMP2) != 0U)
{
/* Get the pending status of the Tamper2 Interrupt */
if (__HAL_RTC_TAMPER_GET_FLAG(hrtc, RTC_FLAG_TAMP2F) != 0U)
{
/* Tamper2 callback */
#if (USE_HAL_RTC_REGISTER_CALLBACKS == 1)
hrtc->Tamper2EventCallback(hrtc);
#else
HAL_RTCEx_Tamper2EventCallback(hrtc);
#endif /* USE_HAL_RTC_REGISTER_CALLBACKS */
/* Clear the Tamper2 interrupt pending bit */
__HAL_RTC_TAMPER_CLEAR_FLAG(hrtc, RTC_FLAG_TAMP2F);
}
}
/* Get the Tamper3 interrupts source enable status */
if (__HAL_RTC_TAMPER_GET_IT_SOURCE(hrtc, RTC_IT_TAMP | RTC_IT_TAMP3) != 0U)
{
/* Get the pending status of the Tamper3 Interrupt */
if (__HAL_RTC_TAMPER_GET_FLAG(hrtc, RTC_FLAG_TAMP3F) != 0U)
{
/* Tamper3 callback */
#if (USE_HAL_RTC_REGISTER_CALLBACKS == 1)
hrtc->Tamper3EventCallback(hrtc);
#else
HAL_RTCEx_Tamper3EventCallback(hrtc);
#endif /* USE_HAL_RTC_REGISTER_CALLBACKS */
/* Clear the Tamper3 interrupt pending bit */
__HAL_RTC_TAMPER_CLEAR_FLAG(hrtc, RTC_FLAG_TAMP3F);
}
}
#endif /* STM32L100xBA || STM32L151xBA || STM32L152xBA || STM32L100xC || STM32L151xC || STM32L152xC || STM32L162xC || STM32L151xCA || STM32L151xD || STM32L152xCA || STM32L152xD || STM32L162xCA || STM32L162xD || STM32L151xE || STM32L151xDX || STM32L152xE || STM32L152xDX || STM32L162xE || STM32L162xDX */
/* 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 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 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
*/
}
#if defined(STM32L100xBA) || defined (STM32L151xBA) || defined (STM32L152xBA) || defined(STM32L100xC) || defined (STM32L151xC) || defined (STM32L152xC) || defined (STM32L162xC) || defined(STM32L151xCA) || defined (STM32L151xD) || defined (STM32L152xCA) || defined (STM32L152xD) || defined (STM32L162xCA) || defined (STM32L162xD) || defined(STM32L151xE) || defined(STM32L151xDX) || defined (STM32L152xE) || defined (STM32L152xDX) || defined (STM32L162xE) || defined (STM32L162xDX)
/**
* @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
*/
}
#endif /* STM32L100xBA || STM32L151xBA || STM32L152xBA || STM32L100xC || STM32L151xC || STM32L152xC || STM32L162xC || STM32L151xCA || STM32L151xD || STM32L152xCA || STM32L152xD || STM32L162xCA || STM32L162xD || STM32L151xE || STM32L151xDX || STM32L152xE || STM32L152xDX || STM32L162xE || STM32L162xDX */
/**
* @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 (__HAL_RTC_TIMESTAMP_GET_FLAG(hrtc, RTC_FLAG_TSF) == 0U)
{
if (__HAL_RTC_TIMESTAMP_GET_FLAG(hrtc, RTC_FLAG_TSOVF) != 0U)
{
/* Clear the TIMESTAMP OverRun Flag */
__HAL_RTC_TIMESTAMP_CLEAR_FLAG(hrtc, RTC_FLAG_TSOVF);
/* Change TIMESTAMP state */
hrtc->State = HAL_RTC_STATE_ERROR;
return HAL_ERROR;
}
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;
}
/**
* @brief Handle Tamper 1 Polling.
* @param hrtc RTC handle
* @param Timeout Timeout duration
* @retval HAL status
*/
HAL_StatusTypeDef HAL_RTCEx_PollForTamper1Event(RTC_HandleTypeDef *hrtc, uint32_t Timeout)
{
uint32_t tickstart = HAL_GetTick();
/* Get the status of the Interrupt */
while (__HAL_RTC_TAMPER_GET_FLAG(hrtc, RTC_FLAG_TAMP1F) == 0U)
{
if (Timeout != HAL_MAX_DELAY)
{
if (((HAL_GetTick() - tickstart) > Timeout) || (Timeout == 0U))
{
hrtc->State = HAL_RTC_STATE_TIMEOUT;
return HAL_TIMEOUT;
}
}
}
/* Clear the Tamper Flag */
__HAL_RTC_TAMPER_CLEAR_FLAG(hrtc, RTC_FLAG_TAMP1F);
/* Change RTC state */
hrtc->State = HAL_RTC_STATE_READY;
return HAL_OK;
}
#if defined(STM32L100xBA) || defined (STM32L151xBA) || defined (STM32L152xBA) || defined(STM32L100xC) || defined (STM32L151xC) || defined (STM32L152xC) || defined (STM32L162xC) || defined(STM32L151xCA) || defined (STM32L151xD) || defined (STM32L152xCA) || defined (STM32L152xD) || defined (STM32L162xCA) || defined (STM32L162xD) || defined(STM32L151xE) || defined(STM32L151xDX) || defined (STM32L152xE) || defined (STM32L152xDX) || defined (STM32L162xE) || defined (STM32L162xDX)
/**
* @brief Handle Tamper 2 Polling.
* @param hrtc RTC handle
* @param Timeout Timeout duration
* @retval HAL status
*/
HAL_StatusTypeDef HAL_RTCEx_PollForTamper2Event(RTC_HandleTypeDef *hrtc, uint32_t Timeout)
{
uint32_t tickstart = HAL_GetTick();
/* Get the status of the Interrupt */
while (__HAL_RTC_TAMPER_GET_FLAG(hrtc, RTC_FLAG_TAMP2F) == 0U)
{
if (Timeout != HAL_MAX_DELAY)
{
if (((HAL_GetTick() - tickstart) > Timeout) || (Timeout == 0U))
{
hrtc->State = HAL_RTC_STATE_TIMEOUT;
return HAL_TIMEOUT;
}
}
}
/* Clear the Tamper Flag */
__HAL_RTC_TAMPER_CLEAR_FLAG(hrtc, RTC_FLAG_TAMP2F);
/* Change RTC state */
hrtc->State = HAL_RTC_STATE_READY;
return HAL_OK;
}
/**
* @brief Handle Tamper 3 Polling.
* @param hrtc RTC handle
* @param Timeout Timeout duration
* @retval HAL status
*/
HAL_StatusTypeDef HAL_RTCEx_PollForTamper3Event(RTC_HandleTypeDef *hrtc, uint32_t Timeout)
{
uint32_t tickstart = HAL_GetTick();
/* Get the status of the Interrupt */
while (__HAL_RTC_TAMPER_GET_FLAG(hrtc, RTC_FLAG_TAMP3F) == 0U)
{
if (Timeout != HAL_MAX_DELAY)
{
if (((HAL_GetTick() - tickstart) > Timeout) || (Timeout == 0U))
{
hrtc->State = HAL_RTC_STATE_TIMEOUT;
return HAL_TIMEOUT;
}
}
}
/* Clear the Tamper Flag */
__HAL_RTC_TAMPER_CLEAR_FLAG(hrtc, RTC_FLAG_TAMP3F);
/* Change RTC state */
hrtc->State = HAL_RTC_STATE_READY;
return HAL_OK;
}
#endif /* STM32L100xBA || STM32L151xBA || STM32L152xBA || STM32L100xC || STM32L151xC || STM32L152xC || STM32L162xC || STM32L151xCA || STM32L151xD || STM32L152xCA || STM32L152xD || STM32L162xCA || STM32L162xD || STM32L151xE || STM32L151xDX || STM32L152xE || STM32L152xDX || STM32L162xE || STM32L162xDX */
/**
* @}
*/
/** @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;
/* 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) != 0U)
{
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) == 1U)
{
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);
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) == 0U)
{
if ((HAL_GetTick() - tickstart) > RTC_TIMEOUT_VALUE)
{
/* Enable the write protection for RTC registers */
__HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
hrtc->State = HAL_RTC_STATE_TIMEOUT;
/* Process Unlocked */
__HAL_UNLOCK(hrtc);
return HAL_TIMEOUT;
}
}
/* Clear the Wakeup Timer clock source bits in CR register */
hrtc->Instance->CR &= (uint32_t)~RTC_CR_WUCKSEL;
/* Configure the clock source */
hrtc->Instance->CR |= (uint32_t)WakeUpClock;
/* Configure the Wakeup Timer counter */
hrtc->Instance->WUTR = (uint32_t)WakeUpCounter;
/* Enable the Wakeup Timer */
__HAL_RTC_WAKEUPTIMER_ENABLE(hrtc);
/* Enable the write protection for RTC registers */
__HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
hrtc->State = HAL_RTC_STATE_READY;
/* Process Unlocked */
__HAL_UNLOCK(hrtc);
return HAL_OK;
}
/**
* @brief Set wake up timer with interrupt.
* @param hrtc RTC handle
* @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)
{
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;
/* 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) != 0U)
{
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) == 1U)
{
if ((HAL_GetTick() - tickstart) > RTC_TIMEOUT_VALUE)
{
/* Enable the write protection for RTC registers */
__HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
hrtc->State = HAL_RTC_STATE_TIMEOUT;
/* Process Unlocked */
__HAL_UNLOCK(hrtc);
return HAL_TIMEOUT;
}
}
}
/* Disable the Wake-Up timer */
__HAL_RTC_WAKEUPTIMER_DISABLE(hrtc);
/* Clear flag Wake-Up */
__HAL_RTC_WAKEUPTIMER_CLEAR_FLAG(hrtc, RTC_FLAG_WUTF);
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) == 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 */
hrtc->Instance->WUTR = (uint32_t)WakeUpCounter;
/* Clear the Wakeup Timer clock source bits in CR register */
hrtc->Instance->CR &= (uint32_t)~RTC_CR_WUCKSEL;
/* Configure the clock source */
hrtc->Instance->CR |= (uint32_t)WakeUpClock;
/* RTC WakeUpTimer Interrupt Configuration: EXTI configuration */
__HAL_RTC_WAKEUPTIMER_EXTI_ENABLE_IT();
__HAL_RTC_WAKEUPTIMER_EXTI_ENABLE_RISING_EDGE();
/* Configure the Interrupt in the RTC_CR register */
__HAL_RTC_WAKEUPTIMER_ENABLE_IT(hrtc, RTC_IT_WUT);
/* Enable the Wakeup Timer */
__HAL_RTC_WAKEUPTIMER_ENABLE(hrtc);
/* Enable the write protection for RTC registers */
__HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
hrtc->State = HAL_RTC_STATE_READY;
/* Process Unlocked */
__HAL_UNLOCK(hrtc);
return HAL_OK;
}
/**
* @brief Deactivate wake up timer counter.
* @param hrtc RTC handle
* @retval HAL status
*/
HAL_StatusTypeDef HAL_RTCEx_DeactivateWakeUpTimer(RTC_HandleTypeDef *hrtc)
{
uint32_t tickstart;
/* Process Locked */
__HAL_LOCK(hrtc);
hrtc->State = HAL_RTC_STATE_BUSY;
/* Disable the write protection for RTC registers */
__HAL_RTC_WRITEPROTECTION_DISABLE(hrtc);
/* Disable the Wakeup Timer */
__HAL_RTC_WAKEUPTIMER_DISABLE(hrtc);
/* In case of interrupt mode is used, the interrupt source must disabled */
__HAL_RTC_WAKEUPTIMER_DISABLE_IT(hrtc, RTC_IT_WUT);
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) == 0U)
{
if ((HAL_GetTick() - tickstart) > RTC_TIMEOUT_VALUE)
{
/* Enable the write protection for RTC registers */
__HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
hrtc->State = HAL_RTC_STATE_TIMEOUT;
/* Process Unlocked */
__HAL_UNLOCK(hrtc);
return HAL_TIMEOUT;
}
}
/* Enable the write protection for RTC registers */
__HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
hrtc->State = HAL_RTC_STATE_READY;
/* Process Unlocked */
__HAL_UNLOCK(hrtc);
return HAL_OK;
}
/**
* @brief Get wake up timer counter.
* @param hrtc RTC handle
* @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 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 (__HAL_RTC_WAKEUPTIMER_GET_FLAG(hrtc, RTC_FLAG_WUTF) != 0U)
{
/* 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 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 (__HAL_RTC_WAKEUPTIMER_GET_FLAG(hrtc, RTC_FLAG_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 */
__HAL_RTC_WAKEUPTIMER_CLEAR_FLAG(hrtc, RTC_FLAG_WUTF);
/* 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.
(+) 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 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 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;
/* 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 RTC handle
* @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;
/* 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;
}
#if defined(STM32L100xBA) || defined (STM32L151xBA) || defined (STM32L152xBA) || defined(STM32L100xC) || defined (STM32L151xC) || defined (STM32L152xC) || defined (STM32L162xC) || defined(STM32L151xCA) || defined (STM32L151xD) || defined (STM32L152xCA) || defined (STM32L152xD) || defined (STM32L162xCA) || defined (STM32L162xD) || defined(STM32L151xE) || defined(STM32L151xDX) || defined (STM32L152xE) || defined (STM32L152xDX) || defined (STM32L162xE) || defined (STM32L162xDX)
/**
* @brief Set the Smooth calibration parameters.
* @param hrtc RTC handle
* @param SmoothCalibPeriod Select the Smooth Calibration Period.
* This parameter can be can be one of the following values :
* @arg RTC_SMOOTHCALIB_PERIOD_32SEC: The smooth calibration period is 32s.
* @arg RTC_SMOOTHCALIB_PERIOD_16SEC: The smooth calibration period is 16s.
* @arg RTC_SMOOTHCALIB_PERIOD_8SEC: The smooth calibration period is 8s.
* @param SmoothCalibPlusPulses Select to Set or reset the CALP bit.
* This parameter can be one of the following values:
* @arg RTC_SMOOTHCALIB_PLUSPULSES_SET: Add one RTCCLK pulse every 2*11 pulses.
* @arg RTC_SMOOTHCALIB_PLUSPULSES_RESET: No RTCCLK pulses are added.
* @param SmoothCalibMinusPulsesValue Select the value of CALM[8:0] bits.
* This parameter can be one any value from 0 to 0x000001FF.
* @note To deactivate the smooth calibration, the field SmoothCalibPlusPulses
* must be equal to SMOOTHCALIB_PLUSPULSES_RESET and the field
* SmoothCalibMinusPulsesValue mut be equal to 0.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_RTCEx_SetSmoothCalib(RTC_HandleTypeDef *hrtc, uint32_t SmoothCalibPeriod, uint32_t SmoothCalibPlusPulses, uint32_t SmoothCalibMinusPulsesValue)
{
uint32_t tickstart;
/* Check the parameters */
assert_param(IS_RTC_SMOOTH_CALIB_PERIOD(SmoothCalibPeriod));
assert_param(IS_RTC_SMOOTH_CALIB_PLUS(SmoothCalibPlusPulses));
assert_param(IS_RTC_SMOOTH_CALIB_MINUS(SmoothCalibMinusPulsesValue));
/* Process Locked */
__HAL_LOCK(hrtc);
hrtc->State = HAL_RTC_STATE_BUSY;
/* Disable the write protection for RTC registers */
__HAL_RTC_WRITEPROTECTION_DISABLE(hrtc);
/* check if a calibration is pending*/
if ((hrtc->Instance->ISR & RTC_ISR_RECALPF) != 0U)
{
tickstart = HAL_GetTick();
/* check if a calibration is pending*/
while ((hrtc->Instance->ISR & RTC_ISR_RECALPF) != 0U)
{
if ((HAL_GetTick() - tickstart) > RTC_TIMEOUT_VALUE)
{
/* Enable the write protection for RTC registers */
__HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
/* Change RTC state */
hrtc->State = HAL_RTC_STATE_TIMEOUT;
/* Process Unlocked */
__HAL_UNLOCK(hrtc);
return HAL_TIMEOUT;
}
}
}
/* Configure the Smooth calibration settings */
hrtc->Instance->CALR = (uint32_t)((uint32_t)SmoothCalibPeriod | (uint32_t)SmoothCalibPlusPulses | (uint32_t)SmoothCalibMinusPulsesValue);
/* Enable the write protection for RTC registers */
__HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
/* Change RTC state */
hrtc->State = HAL_RTC_STATE_READY;
/* Process Unlocked */
__HAL_UNLOCK(hrtc);
return HAL_OK;
}
/**
* @brief 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;
/* Disable the write protection for RTC registers */
__HAL_RTC_WRITEPROTECTION_DISABLE(hrtc);
tickstart = HAL_GetTick();
/* Wait until the shift is completed*/
while ((hrtc->Instance->ISR & RTC_ISR_SHPF) != 0U)
{
if ((HAL_GetTick() - tickstart) > RTC_TIMEOUT_VALUE)
{
/* Enable the write protection for RTC registers */
__HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
hrtc->State = HAL_RTC_STATE_TIMEOUT;
/* Process Unlocked */
__HAL_UNLOCK(hrtc);
return HAL_TIMEOUT;
}
}
/* Check if the reference clock detection is disabled */
if ((hrtc->Instance->CR & RTC_CR_REFCKON) == 0U)
{
/* Configure the Shift settings */
hrtc->Instance->SHIFTR = (uint32_t)(uint32_t)(ShiftSubFS) | (uint32_t)(ShiftAdd1S);
/* Wait for synchro */
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;
}
#endif /* STM32L100xBA || STM32L151xBA || STM32L152xBA || STM32L100xC || STM32L151xC || STM32L152xC || STM32L162xC || STM32L151xCA || STM32L151xD || STM32L152xCA || STM32L152xD || STM32L162xCA || STM32L162xD || STM32L151xE || STM32L151xDX || STM32L152xE || STM32L152xDX || STM32L162xE || STM32L162xDX */
#if defined(STM32L100xBA) || defined (STM32L151xBA) || defined (STM32L152xBA) || defined(STM32L100xC) || defined (STM32L151xC) || defined (STM32L152xC) || defined (STM32L162xC) || defined(STM32L151xCA) || defined (STM32L151xD) || defined (STM32L152xCA) || defined (STM32L152xD) || defined (STM32L162xCA) || defined (STM32L162xD) || defined(STM32L151xE) || defined(STM32L151xDX) || defined (STM32L152xE) || defined (STM32L152xDX) || defined (STM32L162xE) || defined (STM32L162xDX)
/**
* @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)
#else
/**
* @brief Configure the Calibration Pinout (RTC_CALIB).
* @param hrtc RTC handle
* @retval HAL status
*/
HAL_StatusTypeDef HAL_RTCEx_SetCalibrationOutPut(RTC_HandleTypeDef *hrtc)
#endif /* STM32L100xBA || STM32L151xBA || STM32L152xBA || STM32L100xC || STM32L151xC || STM32L152xC || STM32L162xC || STM32L151xCA || STM32L151xD || STM32L152xCA || STM32L152xD || STM32L162xCA || STM32L162xD || STM32L151xE || STM32L151xDX || STM32L152xE || STM32L152xDX || STM32L162xE || STM32L162xDX */
{
#if defined(STM32L100xBA) || defined (STM32L151xBA) || defined (STM32L152xBA) || defined(STM32L100xC) || defined (STM32L151xC) || defined (STM32L152xC) || defined (STM32L162xC) || defined(STM32L151xCA) || defined (STM32L151xD) || defined (STM32L152xCA) || defined (STM32L152xD) || defined (STM32L162xCA) || defined (STM32L162xD) || defined(STM32L151xE) || defined(STM32L151xDX) || defined (STM32L152xE) || defined (STM32L152xDX) || defined (STM32L162xE) || defined (STM32L162xDX)
/* Check the parameters */
assert_param(IS_RTC_CALIB_OUTPUT(CalibOutput));
#endif /* STM32L100xBA || STM32L151xBA || STM32L152xBA || STM32L100xC || STM32L151xC || STM32L152xC || STM32L162xC || STM32L151xCA || STM32L151xD || STM32L152xCA || STM32L152xD || STM32L162xCA || STM32L162xD || STM32L151xE || STM32L151xDX || STM32L152xE || STM32L152xDX || STM32L162xE || STM32L162xDX */
/* Process Locked */
__HAL_LOCK(hrtc);
hrtc->State = HAL_RTC_STATE_BUSY;
/* Disable the write protection for RTC registers */
__HAL_RTC_WRITEPROTECTION_DISABLE(hrtc);
#if defined(STM32L100xBA) || defined (STM32L151xBA) || defined (STM32L152xBA) || defined(STM32L100xC) || defined (STM32L151xC) || defined (STM32L152xC) || defined (STM32L162xC) || defined(STM32L151xCA) || defined (STM32L151xD) || defined (STM32L152xCA) || defined (STM32L152xD) || defined (STM32L162xCA) || defined (STM32L162xD) || defined(STM32L151xE) || defined(STM32L151xDX) || defined (STM32L152xE) || defined (STM32L152xDX) || defined (STM32L162xE) || defined (STM32L162xDX)
/* Clear flags before config */
hrtc->Instance->CR &= (uint32_t)~RTC_CR_COSEL;
/* Configure the RTC_CR register */
hrtc->Instance->CR |= (uint32_t)CalibOutput;
#endif /* STM32L100xBA || STM32L151xBA || STM32L152xBA || STM32L100xC || STM32L151xC || STM32L152xC || STM32L162xC || STM32L151xCA || STM32L151xD || STM32L152xCA || STM32L152xD || STM32L162xCA || STM32L162xD || STM32L151xE || STM32L151xDX || STM32L152xE || STM32L152xDX || STM32L162xE || STM32L162xDX */
__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 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 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 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
{
__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 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
{
__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;
}
#if defined(STM32L100xBA) || defined (STM32L151xBA) || defined (STM32L152xBA) || defined(STM32L100xC) || defined (STM32L151xC) || defined (STM32L152xC) || defined (STM32L162xC) || defined(STM32L151xCA) || defined (STM32L151xD) || defined (STM32L152xCA) || defined (STM32L152xD) || defined (STM32L162xCA) || defined (STM32L162xD) || defined(STM32L151xE) || defined(STM32L151xDX) || defined (STM32L152xE) || defined (STM32L152xDX) || defined (STM32L162xE) || defined (STM32L162xDX)
/**
* @brief Enable the Bypass Shadow feature.
* @param hrtc RTC handle
* @note When the Bypass Shadow is enabled the calendar value are taken
* directly from the Calendar counter.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_RTCEx_EnableBypassShadow(RTC_HandleTypeDef *hrtc)
{
/* Process Locked */
__HAL_LOCK(hrtc);
hrtc->State = HAL_RTC_STATE_BUSY;
/* Disable the write protection for RTC registers */
__HAL_RTC_WRITEPROTECTION_DISABLE(hrtc);
/* Set the BYPSHAD bit */
hrtc->Instance->CR |= (uint8_t)RTC_CR_BYPSHAD;
/* Enable the write protection for RTC registers */
__HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
/* Change RTC state */
hrtc->State = HAL_RTC_STATE_READY;
/* Process Unlocked */
__HAL_UNLOCK(hrtc);
return HAL_OK;
}
/**
* @brief Disable the Bypass Shadow feature.
* @param hrtc RTC handle
* @note When the Bypass Shadow is enabled the calendar value are taken
* directly from the Calendar counter.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_RTCEx_DisableBypassShadow(RTC_HandleTypeDef *hrtc)
{
/* Process Locked */
__HAL_LOCK(hrtc);
hrtc->State = HAL_RTC_STATE_BUSY;
/* Disable the write protection for RTC registers */
__HAL_RTC_WRITEPROTECTION_DISABLE(hrtc);
/* Reset the BYPSHAD bit */
hrtc->Instance->CR &= ((uint8_t)~RTC_CR_BYPSHAD);
/* Enable the write protection for RTC registers */
__HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
/* Change RTC state */
hrtc->State = HAL_RTC_STATE_READY;
/* Process Unlocked */
__HAL_UNLOCK(hrtc);
return HAL_OK;
}
#endif /* STM32L100xBA || STM32L151xBA || STM32L152xBA || STM32L100xC || STM32L151xC || STM32L152xC || STM32L162xC || STM32L151xCA || STM32L151xD || STM32L152xCA || STM32L152xD || STM32L162xCA || STM32L162xD || STM32L151xE || STM32L151xDX || STM32L152xE || STM32L152xDX || STM32L162xE || STM32L162xDX */
/**
* @}
*/
/** @addtogroup RTCEx_Exported_Functions_Group4
* @brief Extended features functions
*
@verbatim
===============================================================================
##### Extended features functions #####
===============================================================================
[..] This section provides functions allowing to:
(+) RTC Alram 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 (__HAL_RTC_ALARM_GET_FLAG(hrtc, RTC_FLAG_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 */
__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****/