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Monitor the growing conditions in a hothouse with simple sensors.
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hothouse-mon/Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_rtc_ex.c

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