mbed library sources. Supersedes mbed-src.
Dependents: Nucleo_Hello_Encoder BLE_iBeaconScan AM1805_DEMO DISCO-F429ZI_ExportTemplate1 ... more
Diff: targets/TARGET_STM/TARGET_STM32H7/device/stm32h7xx_hal_rtc.c
- Revision:
- 189:f392fc9709a3
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/targets/TARGET_STM/TARGET_STM32H7/device/stm32h7xx_hal_rtc.c Wed Feb 20 22:31:08 2019 +0000 @@ -0,0 +1,1845 @@ +/** + ****************************************************************************** + * @file stm32h7xx_hal_rtc.c + * @author MCD Application Team + * @brief RTC HAL module driver. + * This file provides firmware functions to manage the following + * functionalities of the Real-Time Clock (RTC) peripheral: + * + Initialization/de-initialization + * + Calendar (Time and Date) configuration + * + Alarms (Alarm A and Alarm B) configuration + * + WakeUp Timer configuration + * + TimeStamp configuration + * + Tampers configuration + * + Backup Data Registers configuration + * + RTC Tamper and TimeStamp Pins Selection + * + Interrupts and flags management + * + @verbatim + =============================================================================== + ##### RTC Operating Condition ##### + =============================================================================== + [..] The real-time clock (RTC) and the RTC backup registers can be powered + from the VBAT voltage when the main VDD supply is powered off. + To retain the content of the RTC backup registers and supply the RTC + when VDD is turned off, VBAT pin can be connected to an optional + standby voltage supplied by a battery or by another source. + + ##### Backup Domain Reset ##### + =============================================================================== + [..] The backup domain reset sets all RTC registers and the RCC_BDCR register + to their reset values. + A backup domain reset is generated when one of the following events occurs: + (#) Software reset, triggered by setting the BDRST bit in the + RCC Backup domain control register (RCC_BDCR). + (#) VDD or VBAT power on, if both supplies have previously been powered off. + (#) Tamper detection event resets all data backup registers. + + ##### Backup Domain Access ##### + =================================================================== + [..] After reset, the backup domain (RTC registers, RTC backup data + registers and backup SRAM) is protected against possible unwanted write + accesses. + + [..] To enable access to the RTC Domain and RTC registers, proceed as follows: + (#) Call the function HAL_RCCEx_PeriphCLKConfig with RCC_PERIPHCLK_RTC for + PeriphClockSelection and select RTCClockSelection (LSE, LSI or HSEdiv32) + (#) Enable RTC Clock using the __HAL_RCC_RTC_ENABLE() macro. + + ##### How to use RTC Driver ##### + =================================================================== + [..] + (#) Enable the RTC domain access (see description in the section above). + (#) Configure the RTC Prescaler (Asynchronous and Synchronous) and RTC hour + format using the HAL_RTC_Init() function. + + *** Time and Date configuration *** + =================================== + [..] + (#) To configure the RTC Calendar (Time and Date) use the HAL_RTC_SetTime() + and HAL_RTC_SetDate() functions. + (#) To read the RTC Calendar, use the HAL_RTC_GetTime() and HAL_RTC_GetDate() functions. + + *** Alarm configuration *** + =========================== + [..] + (#) To configure the RTC Alarm use the HAL_RTC_SetAlarm() function. + You can also configure the RTC Alarm with interrupt mode using the + HAL_RTC_SetAlarm_IT() function. + (#) To read the RTC Alarm, use the HAL_RTC_GetAlarm() function. + + ##### RTC and low power modes ##### + =================================================================== + [..] The MCU can be woken up from a low power mode by an RTC alternate + function. + [..] The RTC alternate functions are the RTC alarms (Alarm A and Alarm B), + RTC wakeup, RTC tamper event detection and RTC time stamp event detection. + These RTC alternate functions can wake up the system from the Stop and Standby low power + modes. + [..] The system can also wake up from low power modes without depending + on an external interrupt (Auto-wakeup mode), by using the RTC alarm + or the RTC wakeup events. + [..] The RTC provides a programmable time base for waking up from the + Stop or Standby mode at regular intervals. + Wakeup from STOP and Standby modes is possible only when the RTC clock source + is LSE or LSI. + + *** Callback registration *** + ============================================= + + The compilation define USE_RTC_REGISTER_CALLBACKS when set to 1 + allows the user to configure dynamically the driver callbacks. + Use Function @ref HAL_RTC_RegisterCallback() to register an interrupt callback. + + Function @ref HAL_RTC_RegisterCallback() allows to register following callbacks: + (+) AlarmAEventCallback : RTC Alarm A Event callback. + (+) AlarmBEventCallback : RTC Alarm B Event callback. + (+) TimeStampEventCallback : RTC TimeStamp Event callback. + (+) WakeUpTimerEventCallback : RTC WakeUpTimer Event callback. + (+) Tamper1EventCallback : RTC Tamper 1 Event callback. + (+) Tamper2EventCallback : RTC Tamper 2 Event callback. + (+) Tamper3EventCallback : RTC Tamper 3 Event callback. + (+) MspInitCallback : RTC MspInit callback. + (+) MspDeInitCallback : RTC MspDeInit callback. + This function takes as parameters the HAL peripheral handle, the Callback ID + and a pointer to the user callback function. + + Use function @ref HAL_RTC_UnRegisterCallback() to reset a callback to the default + weak function. + @ref HAL_RTC_UnRegisterCallback() takes as parameters the HAL peripheral handle, + and the Callback ID. + This function allows to reset following callbacks: + (+) AlarmAEventCallback : RTC Alarm A Event callback. + (+) AlarmBEventCallback : RTC Alarm B Event callback. + (+) TimeStampEventCallback : RTC TimeStamp Event callback. + (+) WakeUpTimerEventCallback : RTC WakeUpTimer Event callback. + (+) Tamper1EventCallback : RTC Tamper 1 Event callback. + (+) Tamper2EventCallback : RTC Tamper 2 Event callback. + (+) Tamper3EventCallback : RTC Tamper 3 Event callback. + (+) MspInitCallback : RTC MspInit callback. + (+) MspDeInitCallback : RTC MspDeInit callback. + + By default, after the @ref HAL_RTC_Init() and when the state is HAL_RTC_STATE_RESET, + all callbacks are set to the corresponding weak functions : + examples @ref AlarmAEventCallback(), @ref WakeUpTimerEventCallback(). + Exception done for MspInit and MspDeInit callbacks that are reset to the legacy weak function + in the @ref HAL_RTC_Init()/@ref HAL_RTC_DeInit() only when these callbacks are null + (not registered beforehand). + If not, MspInit or MspDeInit are not null, @ref HAL_RTC_Init()/@ref HAL_RTC_DeInit() + keep and use the user MspInit/MspDeInit callbacks (registered beforehand) + + Callbacks can be registered/unregistered in HAL_RTC_STATE_READY state only. + Exception done MspInit/MspDeInit that can be registered/unregistered + in HAL_RTC_STATE_READY or HAL_RTC_STATE_RESET state, + thus registered (user) MspInit/DeInit callbacks can be used during the Init/DeInit. + In that case first register the MspInit/MspDeInit user callbacks + using @ref HAL_RTC_RegisterCallback() before calling @ref HAL_RTC_DeInit() + or @ref HAL_RTC_Init() function. + + When The compilation define USE_HAL_RTC_REGISTER_CALLBACKS is set to 0 or + not defined, the callback registration feature is not available and all callbacks + are set to the corresponding weak functions. + @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 "stm32h7xx_hal.h" + +/** @addtogroup STM32H7xx_HAL_Driver + * @{ + */ + +/** @defgroup RTC RTC + * @brief RTC HAL module driver + * @{ + */ + +#ifdef HAL_RTC_MODULE_ENABLED + +/* Private typedef -----------------------------------------------------------*/ +/* Private define ------------------------------------------------------------*/ +/* Private macro -------------------------------------------------------------*/ +/* Private variables ---------------------------------------------------------*/ +/* Private function prototypes -----------------------------------------------*/ +/* Exported functions --------------------------------------------------------*/ + +/** @defgroup RTC_Exported_Functions RTC Exported Functions + * @{ + */ + +/** @defgroup RTC_Exported_Functions_Group1 Initialization and de-initialization functions + * @brief Initialization and Configuration functions + * +@verbatim + =============================================================================== + ##### Initialization and de-initialization functions ##### + =============================================================================== + [..] This section provides functions allowing to initialize and configure the + RTC Prescaler (Synchronous and Asynchronous), RTC Hour format, disable + RTC registers Write protection, enter and exit the RTC initialization mode, + RTC registers synchronization check and reference clock detection enable. + (#) The RTC Prescaler is programmed to generate the RTC 1Hz time base. + It is split into 2 programmable prescalers to minimize power consumption. + (++) A 7-bit asynchronous prescaler and a 15-bit synchronous prescaler. + (++) When both prescalers are used, it is recommended to configure the + asynchronous prescaler to a high value to minimize power consumption. + (#) All RTC registers are Write protected. Writing to the RTC registers + is enabled by writing a key into the Write Protection register, RTC_WPR. + (#) To configure the RTC Calendar, user application should enter + initialization mode. In this mode, the calendar counter is stopped + and its value can be updated. When the initialization sequence is + complete, the calendar restarts counting after 4 RTCCLK cycles. + (#) To read the calendar through the shadow registers after Calendar + initialization, calendar update or after wakeup from low power modes + the software must first clear the RSF flag. The software must then + wait until it is set again before reading the calendar, which means + that the calendar registers have been correctly copied into the + RTC_TR and RTC_DR shadow registers.The HAL_RTC_WaitForSynchro() function + implements the above software sequence (RSF clear and RSF check). + +@endverbatim + * @{ + */ + +/** + * @brief Initialize the RTC according to the specified parameters + * in the RTC_InitTypeDef structure. + * @param hrtc: RTC handle + * @retval HAL status + */ +HAL_StatusTypeDef HAL_RTC_Init(RTC_HandleTypeDef *hrtc) +{ + HAL_StatusTypeDef status = HAL_ERROR; + + /* Check RTC handler */ + if(hrtc != NULL) + { + status = HAL_OK; + + /* Check the parameters */ + assert_param(IS_RTC_ALL_INSTANCE(hrtc->Instance)); + assert_param(IS_RTC_HOUR_FORMAT(hrtc->Init.HourFormat)); + assert_param(IS_RTC_ASYNCH_PREDIV(hrtc->Init.AsynchPrediv)); + assert_param(IS_RTC_SYNCH_PREDIV(hrtc->Init.SynchPrediv)); + assert_param(IS_RTC_OUTPUT(hrtc->Init.OutPut)); + assert_param(IS_RTC_OUTPUT_REMAP(hrtc->Init.OutPutRemap)); + assert_param(IS_RTC_OUTPUT_POL(hrtc->Init.OutPutPolarity)); + assert_param(IS_RTC_OUTPUT_TYPE(hrtc->Init.OutPutType)); + + #if (USE_HAL_RTC_REGISTER_CALLBACKS == 1) + if(hrtc->State == HAL_RTC_STATE_RESET) + { + /* Allocate lock resource and initialize it */ + hrtc->Lock = HAL_UNLOCKED; + + hrtc->AlarmAEventCallback = HAL_RTC_AlarmAEventCallback; /* Legacy weak AlarmAEventCallback */ + hrtc->AlarmBEventCallback = HAL_RTCEx_AlarmBEventCallback; /* Legacy weak AlarmBEventCallback */ + hrtc->TimeStampEventCallback = HAL_RTCEx_TimeStampEventCallback; /* Legacy weak TimeStampEventCallback */ + hrtc->WakeUpTimerEventCallback = HAL_RTCEx_WakeUpTimerEventCallback; /* Legacy weak WakeUpTimerEventCallback */ + hrtc->Tamper1EventCallback = HAL_RTCEx_Tamper1EventCallback; /* Legacy weak Tamper1EventCallback */ + hrtc->Tamper2EventCallback = HAL_RTCEx_Tamper2EventCallback; /* Legacy weak Tamper2EventCallback */ + hrtc->Tamper3EventCallback = HAL_RTCEx_Tamper3EventCallback; /* Legacy weak Tamper3EventCallback */ + + if(hrtc->MspInitCallback == NULL) + { + hrtc->MspInitCallback = HAL_RTC_MspInit; + } + /* Init the low level hardware */ + hrtc->MspInitCallback(hrtc); + + if(hrtc->MspDeInitCallback == NULL) + { + hrtc->MspDeInitCallback = HAL_RTC_MspDeInit; + } + } + #else + if(hrtc->State == HAL_RTC_STATE_RESET) + { + /* Allocate lock resource and initialize it */ + hrtc->Lock = HAL_UNLOCKED; + + /* Initialize RTC MSP */ + HAL_RTC_MspInit(hrtc); + } + #endif /* (USE_HAL_RTC_REGISTER_CALLBACKS) */ + + /* Set RTC state */ + 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; + + status = HAL_ERROR; + } + else + { + /* Clear RTC_CR FMT, OSEL and POL Bits */ + hrtc->Instance->CR &= (~(RTC_CR_FMT | RTC_CR_OSEL | RTC_CR_POL)); + /* Set RTC_CR FMT, OSEL and POL Bits to specified values */ + hrtc->Instance->CR |= (hrtc->Init.HourFormat | hrtc->Init.OutPut | hrtc->Init.OutPutPolarity); + + /* Configure the RTC PRER */ + hrtc->Instance->PRER = (hrtc->Init.SynchPrediv); + hrtc->Instance->PRER |= (hrtc->Init.AsynchPrediv << RTC_PRER_PREDIV_A_Pos); + + /* Exit Initialization mode */ + hrtc->Instance->ISR &= (~RTC_ISR_INIT); + + /* Clear RTC_OR ALARMOUTTYPE and OUT_RMP Bits */ + hrtc->Instance->OR &= (~(RTC_OR_ALARMOUTTYPE | RTC_OR_OUT_RMP)); + /* Set RTC_OR ALARMOUTTYPE and OUT_RMP Bits to specified values */ + hrtc->Instance->OR |= (hrtc->Init.OutPutType | hrtc->Init.OutPutRemap); + + /* Enable the write protection for RTC registers */ + __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc); + + /* Set RTC state */ + hrtc->State = HAL_RTC_STATE_READY; + } + } + + /* return status */ + return status; +} + +/** + * @brief DeInitialize the RTC peripheral. + * @param hrtc RTC handle + * @note This function doesn't reset the RTC Backup Data registers. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_RTC_DeInit(RTC_HandleTypeDef *hrtc) +{ + HAL_StatusTypeDef status = HAL_ERROR; + uint32_t tickstart; + + /* Check RTC handler */ + if(hrtc != NULL) + { + status = HAL_OK; + + /* Check the parameters */ + assert_param(IS_RTC_ALL_INSTANCE(hrtc->Instance)); + + /* Set RTC state */ + 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; + + status = HAL_ERROR; + } + else + { + /* Reset TR, DR and CR registers */ + hrtc->Instance->TR = 0x00000000u; + hrtc->Instance->DR = ((uint32_t)(RTC_DR_WDU_0 | RTC_DR_MU_0 | RTC_DR_DU_0)); + /* Reset All CR bits except CR[2:0] */ + hrtc->Instance->CR &= RTC_CR_WUCKSEL; + + tickstart = HAL_GetTick(); + + /* Wait till WUTWF flag is set and if Time out is reached exit */ + while(((hrtc->Instance->ISR) & RTC_ISR_WUTWF) == 0u) + { + if((HAL_GetTick() - tickstart ) > RTC_TIMEOUT_VALUE) + { + /* Enable the write protection for RTC registers */ + __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc); + + /* Set RTC state */ + hrtc->State = HAL_RTC_STATE_TIMEOUT; + + status = HAL_TIMEOUT; + } + } + } + + if(status == HAL_OK) + { + /* Reset all RTC CR register bits */ + hrtc->Instance->CR &= 0x00000000u; + /* Reset other RTC registers */ + hrtc->Instance->WUTR = RTC_WUTR_WUT; + hrtc->Instance->PRER = ((uint32_t)(RTC_PRER_PREDIV_A | 0x000000FFU)); + hrtc->Instance->ALRMAR = 0x00000000u; + hrtc->Instance->ALRMBR = 0x00000000u; + hrtc->Instance->SHIFTR = 0x00000000u; + hrtc->Instance->CALR = 0x00000000u; + hrtc->Instance->ALRMASSR = 0x00000000u; + hrtc->Instance->ALRMBSSR = 0x00000000u; + + /* Reset Tamper configuration register */ + hrtc->Instance->TAMPCR = 0x00000000u; + + /* Reset Option register */ + hrtc->Instance->OR = 0x00000000u; + + /* Reset ISR register and exit initialization mode */ + hrtc->Instance->ISR = 0x00000000u; + + /* 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; + + status = HAL_ERROR; + } + } + } + + if(status == HAL_OK) + { + /* Enable the write protection for RTC registers */ + __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc); + + #if (USE_HAL_RTC_REGISTER_CALLBACKS == 1) + if(hrtc->MspDeInitCallback == NULL) + { + hrtc->MspDeInitCallback = HAL_RTC_MspDeInit; + } + + /* DeInit the low level hardware: CLOCK, NVIC.*/ + hrtc->MspDeInitCallback(hrtc); + + #else + /* De-Initialize RTC MSP */ + HAL_RTC_MspDeInit(hrtc); + #endif /* (USE_HAL_RTC_REGISTER_CALLBACKS) */ + + hrtc->State = HAL_RTC_STATE_RESET; + + /* Release Lock */ + __HAL_UNLOCK(hrtc); + } + } + + /* return status */ + return status; +} + +#if (USE_HAL_RTC_REGISTER_CALLBACKS == 1) +/** + * @brief Register a User RTC Callback + * To be used instead of the weak predefined callback + * @param hrtc RTC handle + * @param CallbackID ID of the callback to be registered + * This parameter can be one of the following values: + * @arg @ref HAL_RTC_ALARM_A_EVENT_CB_ID Alarm A Event Callback ID + * @arg @ref HAL_RTC_ALARM_B_EVENT_CB_ID Alarm B Event Callback ID + * @arg @ref HAL_RTC_TIMESTAMP_EVENT_CB_ID TimeStamp Event Callback ID + * @arg @ref HAL_RTC_WAKEUPTIMER_EVENT_CB_ID WakeUp Timer Event Callback ID + * @arg @ref HAL_RTC_TAMPER1_EVENT_CB_ID Tamper 1 Callback ID + * @arg @ref HAL_RTC_TAMPER2_EVENT_CB_ID Tamper 2 Callback ID + * @arg @ref HAL_RTC_TAMPER3_EVENT_CB_ID Tamper 3 Callback ID + * @arg @ref HAL_RTC_MSPINIT_CB_ID Msp Init callback ID + * @arg @ref HAL_RTC_MSPDEINIT_CB_ID Msp DeInit callback ID + * @param pCallback pointer to the Callback function + * @retval HAL status + */ +HAL_StatusTypeDef HAL_RTC_RegisterCallback(RTC_HandleTypeDef *hrtc, HAL_RTC_CallbackIDTypeDef CallbackID, pRTC_CallbackTypeDef pCallback) +{ + HAL_StatusTypeDef status = HAL_OK; + + if(pCallback == NULL) + { + return HAL_ERROR; + } + + /* Process locked */ + __HAL_LOCK(hrtc); + + if(HAL_RTC_STATE_READY == hrtc->State) + { + switch (CallbackID) + { + case HAL_RTC_ALARM_A_EVENT_CB_ID : + hrtc->AlarmAEventCallback = pCallback; + break; + + case HAL_RTC_ALARM_B_EVENT_CB_ID : + hrtc->AlarmBEventCallback = pCallback; + break; + + case HAL_RTC_TIMESTAMP_EVENT_CB_ID : + hrtc->TimeStampEventCallback = pCallback; + break; + + case HAL_RTC_WAKEUPTIMER_EVENT_CB_ID : + hrtc->WakeUpTimerEventCallback = pCallback; + break; + + case HAL_RTC_TAMPER1_EVENT_CB_ID : + hrtc->Tamper1EventCallback = pCallback; + break; + + case HAL_RTC_TAMPER2_EVENT_CB_ID : + hrtc->Tamper2EventCallback = pCallback; + break; + + case HAL_RTC_TAMPER3_EVENT_CB_ID : + hrtc->Tamper3EventCallback = pCallback; + break; + + case HAL_RTC_MSPINIT_CB_ID : + hrtc->MspInitCallback = pCallback; + break; + + case HAL_RTC_MSPDEINIT_CB_ID : + hrtc->MspDeInitCallback = pCallback; + break; + + default : + /* Return error status */ + status = HAL_ERROR; + break; + } + } + else if(HAL_RTC_STATE_RESET == hrtc->State) + { + switch (CallbackID) + { + case HAL_RTC_MSPINIT_CB_ID : + hrtc->MspInitCallback = pCallback; + break; + + case HAL_RTC_MSPDEINIT_CB_ID : + hrtc->MspDeInitCallback = pCallback; + break; + + default : + /* Return error status */ + status = HAL_ERROR; + break; + } + } + else + { + /* Return error status */ + status = HAL_ERROR; + } + + /* Release Lock */ + __HAL_UNLOCK(hrtc); + + return status; +} + +/** + * @brief Unregister an RTC Callback + * RTC callabck is redirected to the weak predefined callback + * @param hrtc RTC handle + * @param CallbackID ID of the callback to be unregistered + * This parameter can be one of the following values: + * @arg @ref HAL_RTC_ALARM_A_EVENT_CB_ID Alarm A Event Callback ID + * @arg @ref HAL_RTC_ALARM_B_EVENT_CB_ID Alarm B Event Callback ID + * @arg @ref HAL_RTC_TIMESTAMP_EVENT_CB_ID TimeStamp Event Callback ID + * @arg @ref HAL_RTC_WAKEUPTIMER_EVENT_CB_ID WakeUp Timer Event Callback ID + * @arg @ref HAL_RTC_TAMPER1_EVENT_CB_ID Tamper 1 Callback ID + * @arg @ref HAL_RTC_TAMPER2_EVENT_CB_ID Tamper 2 Callback ID + * @arg @ref HAL_RTC_TAMPER3_EVENT_CB_ID Tamper 3 Callback ID + * @arg @ref HAL_RTC_MSPINIT_CB_ID Msp Init callback ID + * @arg @ref HAL_RTC_MSPDEINIT_CB_ID Msp DeInit callback ID + * @retval HAL status + */ +HAL_StatusTypeDef HAL_RTC_UnRegisterCallback(RTC_HandleTypeDef *hrtc, HAL_RTC_CallbackIDTypeDef CallbackID) +{ + HAL_StatusTypeDef status = HAL_OK; + + /* Process locked */ + __HAL_LOCK(hrtc); + + if(HAL_RTC_STATE_READY == hrtc->State) + { + switch (CallbackID) + { + case HAL_RTC_ALARM_A_EVENT_CB_ID : + hrtc->AlarmAEventCallback = HAL_RTC_AlarmAEventCallback; /* Legacy weak AlarmAEventCallback */ + break; + + case HAL_RTC_ALARM_B_EVENT_CB_ID : + hrtc->AlarmBEventCallback = HAL_RTCEx_AlarmBEventCallback; /* Legacy weak AlarmBEventCallback */ + break; + + case HAL_RTC_TIMESTAMP_EVENT_CB_ID : + hrtc->TimeStampEventCallback = HAL_RTCEx_TimeStampEventCallback; /* Legacy weak TimeStampEventCallback */ + break; + + case HAL_RTC_WAKEUPTIMER_EVENT_CB_ID : + hrtc->WakeUpTimerEventCallback = HAL_RTCEx_WakeUpTimerEventCallback; /* Legacy weak WakeUpTimerEventCallback */ + break; + + case HAL_RTC_TAMPER1_EVENT_CB_ID : + hrtc->Tamper1EventCallback = HAL_RTCEx_Tamper1EventCallback; /* Legacy weak Tamper1EventCallback */ + break; + + case HAL_RTC_TAMPER2_EVENT_CB_ID : + hrtc->Tamper2EventCallback = HAL_RTCEx_Tamper2EventCallback; /* Legacy weak Tamper2EventCallback */ + break; + + case HAL_RTC_TAMPER3_EVENT_CB_ID : + hrtc->Tamper3EventCallback = HAL_RTCEx_Tamper3EventCallback; /* Legacy weak Tamper3EventCallback */ + break; + + case HAL_RTC_MSPINIT_CB_ID : + hrtc->MspInitCallback = HAL_RTC_MspInit; + break; + + case HAL_RTC_MSPDEINIT_CB_ID : + hrtc->MspDeInitCallback = HAL_RTC_MspDeInit; + break; + + default : + /* Return error status */ + status = HAL_ERROR; + break; + } + } + else if(HAL_RTC_STATE_RESET == hrtc->State) + { + switch (CallbackID) + { + case HAL_RTC_MSPINIT_CB_ID : + hrtc->MspInitCallback = HAL_RTC_MspInit; + break; + + case HAL_RTC_MSPDEINIT_CB_ID : + hrtc->MspDeInitCallback = HAL_RTC_MspDeInit; + break; + + default : + /* Return error status */ + status = HAL_ERROR; + break; + } + } + else + { + /* Return error status */ + status = HAL_ERROR; + } + + /* Release Lock */ + __HAL_UNLOCK(hrtc); + + return status; +} +#endif /* USE_HAL_RTC_REGISTER_CALLBACKS */ +/** + * @brief Initialize the RTC MSP. + * @param hrtc RTC handle + * @retval None + */ +__weak void HAL_RTC_MspInit(RTC_HandleTypeDef* hrtc) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hrtc); + + /* NOTE : This function should not be modified, when the callback is needed, + the HAL_RTC_MspInit could be implemented in the user file + */ +} + +/** + * @brief DeInitialize the RTC MSP. + * @param hrtc RTC handle + * @retval None + */ +__weak void HAL_RTC_MspDeInit(RTC_HandleTypeDef* hrtc) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hrtc); + + /* NOTE : This function should not be modified, when the callback is needed, + the HAL_RTC_MspDeInit could be implemented in the user file + */ +} + +/** + * @} + */ + +/** @defgroup RTC_Exported_Functions_Group2 RTC Time and Date functions + * @brief RTC Time and Date functions + * +@verbatim + =============================================================================== + ##### RTC Time and Date functions ##### + =============================================================================== + + [..] This section provides functions allowing to configure Time and Date features + +@endverbatim + * @{ + */ + +/** + * @brief Set RTC current time. + * @param hrtc RTC handle + * @param sTime Pointer to Time 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_RTC_SetTime(RTC_HandleTypeDef *hrtc, RTC_TimeTypeDef *sTime, uint32_t Format) +{ + uint32_t tmpreg; + + /* Check the parameters */ + assert_param(IS_RTC_FORMAT(Format)); + assert_param(IS_RTC_DAYLIGHT_SAVING(sTime->DayLightSaving)); + assert_param(IS_RTC_STORE_OPERATION(sTime->StoreOperation)); + + /* Process Locked */ + __HAL_LOCK(hrtc); + + hrtc->State = HAL_RTC_STATE_BUSY; + + if(Format == RTC_FORMAT_BIN) + { + if((hrtc->Instance->CR & RTC_CR_FMT) != 0u) + { + assert_param(IS_RTC_HOUR12(sTime->Hours)); + assert_param(IS_RTC_HOURFORMAT12(sTime->TimeFormat)); + } + else + { + sTime->TimeFormat = 0x00u; + assert_param(IS_RTC_HOUR24(sTime->Hours)); + } + assert_param(IS_RTC_MINUTES(sTime->Minutes)); + assert_param(IS_RTC_SECONDS(sTime->Seconds)); + + tmpreg = (uint32_t)(( (uint32_t)RTC_ByteToBcd2(sTime->Hours) << RTC_TR_HU_Pos) | \ + ( (uint32_t)RTC_ByteToBcd2(sTime->Minutes) << RTC_TR_MNU_Pos) | \ + ( (uint32_t)RTC_ByteToBcd2(sTime->Seconds)) | \ + (((uint32_t)sTime->TimeFormat) << RTC_TR_PM_Pos)); + } + else + { + if((hrtc->Instance->CR & RTC_CR_FMT) != 0u) + { + assert_param(IS_RTC_HOUR12(RTC_Bcd2ToByte(sTime->Hours))); + assert_param(IS_RTC_HOURFORMAT12(sTime->TimeFormat)); + } + else + { + sTime->TimeFormat = 0x00u; + assert_param(IS_RTC_HOUR24(RTC_Bcd2ToByte(sTime->Hours))); + } + assert_param(IS_RTC_MINUTES(RTC_Bcd2ToByte(sTime->Minutes))); + assert_param(IS_RTC_SECONDS(RTC_Bcd2ToByte(sTime->Seconds))); + tmpreg = (((uint32_t)(sTime->Hours) << RTC_TR_HU_Pos) | \ + ((uint32_t)(sTime->Minutes) << RTC_TR_MNU_Pos) | \ + ((uint32_t) sTime->Seconds) | \ + ((uint32_t)(sTime->TimeFormat) << RTC_TR_PM_Pos)); + } + + /* 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 + { + /* Set the RTC_TR register */ + hrtc->Instance->TR = (uint32_t)(tmpreg & RTC_TR_RESERVED_MASK); + + /* Clear the bits to be configured */ + hrtc->Instance->CR &= ((uint32_t)~RTC_CR_BKP); + + /* Configure the RTC_CR register */ + hrtc->Instance->CR |= (uint32_t)(sTime->DayLightSaving | sTime->StoreOperation); + + /* Exit Initialization mode */ + hrtc->Instance->ISR &= (~RTC_ISR_INIT); + + /* If 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; + } + } + + /* Enable the write protection for RTC registers */ + __HAL_RTC_WRITEPROTECTION_ENABLE(hrtc); + + hrtc->State = HAL_RTC_STATE_READY; + + __HAL_UNLOCK(hrtc); + + return HAL_OK; + } +} + +/** + * @brief Get RTC current time. + * @param hrtc RTC handle + * @param sTime Pointer to Time structure with Hours, Minutes and Seconds fields returned + * with input format (BIN or BCD), also SubSeconds field returning the + * RTC_SSR register content and SecondFraction field the Synchronous pre-scaler + * factor to be used for second fraction ratio computation. + * @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 + * @note You can use SubSeconds and SecondFraction (sTime structure fields returned) to convert SubSeconds + * value in second fraction ratio with time unit following generic formula: + * Second fraction ratio * time_unit= [(SecondFraction-SubSeconds)/(SecondFraction+1)] * time_unit + * This conversion can be performed only if no shift operation is pending (ie. SHFP=0) when PREDIV_S >= SS + * @note You must call HAL_RTC_GetDate() after HAL_RTC_GetTime() to unlock the values + * in the higher-order calendar shadow registers to ensure consistency between the time and date values. + * Reading RTC current time locks the values in calendar shadow registers until Current date is read + * to ensure consistency between the time and date values. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_RTC_GetTime(RTC_HandleTypeDef *hrtc, RTC_TimeTypeDef *sTime, uint32_t Format) +{ + uint32_t tmpreg; + + /* Check the parameters */ + assert_param(IS_RTC_FORMAT(Format)); + + /* Get subseconds structure field from the corresponding register*/ + sTime->SubSeconds = (uint32_t)(hrtc->Instance->SSR); + + /* Get SecondFraction structure field from the corresponding register field*/ + sTime->SecondFraction = (uint32_t)(hrtc->Instance->PRER & RTC_PRER_PREDIV_S); + + /* Get the TR register */ + tmpreg = (uint32_t)(hrtc->Instance->TR & RTC_TR_RESERVED_MASK); + + /* Fill the structure fields with the read parameters */ + sTime->Hours = (uint8_t)((tmpreg & (RTC_TR_HT | RTC_TR_HU)) >> RTC_TR_HU_Pos); + sTime->Minutes = (uint8_t)((tmpreg & (RTC_TR_MNT | RTC_TR_MNU)) >> RTC_TR_MNU_Pos); + sTime->Seconds = (uint8_t)( tmpreg & (RTC_TR_ST | RTC_TR_SU)); + sTime->TimeFormat = (uint8_t)((tmpreg & (RTC_TR_PM)) >> RTC_TR_PM_Pos); + + /* Check the input parameters format */ + if(Format == RTC_FORMAT_BIN) + { + /* Convert the time structure parameters to Binary format */ + sTime->Hours = (uint8_t)RTC_Bcd2ToByte(sTime->Hours); + sTime->Minutes = (uint8_t)RTC_Bcd2ToByte(sTime->Minutes); + sTime->Seconds = (uint8_t)RTC_Bcd2ToByte(sTime->Seconds); + } + + return HAL_OK; +} + +/** + * @brief Set RTC current date. + * @param hrtc RTC handle + * @param sDate 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_RTC_SetDate(RTC_HandleTypeDef *hrtc, RTC_DateTypeDef *sDate, uint32_t Format) +{ + uint32_t datetmpreg; + + /* Check the parameters */ + assert_param(IS_RTC_FORMAT(Format)); + + /* Process Locked */ + __HAL_LOCK(hrtc); + + hrtc->State = HAL_RTC_STATE_BUSY; + + if((Format == RTC_FORMAT_BIN) && ((sDate->Month & 0x10U) == 0x10U)) + { + sDate->Month = (uint8_t)((sDate->Month & (uint8_t)~(0x10U)) + (uint8_t)0x0AU); + } + + assert_param(IS_RTC_WEEKDAY(sDate->WeekDay)); + + if(Format == RTC_FORMAT_BIN) + { + assert_param(IS_RTC_YEAR(sDate->Year)); + assert_param(IS_RTC_MONTH(sDate->Month)); + assert_param(IS_RTC_DATE(sDate->Date)); + + datetmpreg = (((uint32_t)RTC_ByteToBcd2(sDate->Year) << RTC_DR_YU_Pos) | \ + ((uint32_t)RTC_ByteToBcd2(sDate->Month) << RTC_DR_MU_Pos) | \ + ((uint32_t)RTC_ByteToBcd2(sDate->Date)) | \ + ((uint32_t)sDate->WeekDay << RTC_DR_WDU_Pos)); + } + else + { + assert_param(IS_RTC_YEAR(RTC_Bcd2ToByte(sDate->Year))); + assert_param(IS_RTC_MONTH(RTC_Bcd2ToByte(sDate->Month))); + assert_param(IS_RTC_DATE (RTC_Bcd2ToByte(sDate->Date))); + + datetmpreg = ((((uint32_t)sDate->Year) << RTC_DR_YU_Pos) | \ + (((uint32_t)sDate->Month) << RTC_DR_MU_Pos) | \ + ((uint32_t) sDate->Date) | \ + (((uint32_t)sDate->WeekDay) << RTC_DR_WDU_Pos)); + } + + /* 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 + { + /* Set the RTC_DR register */ + hrtc->Instance->DR = (uint32_t)(datetmpreg & RTC_DR_RESERVED_MASK); + + /* Exit Initialization mode */ + hrtc->Instance->ISR &= (~RTC_ISR_INIT); + + /* If 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; + } + } + + /* 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 RTC current date. + * @param hrtc RTC handle + * @param sDate 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 + * @note You must call HAL_RTC_GetDate() after HAL_RTC_GetTime() to unlock the values + * in the higher-order calendar shadow registers to ensure consistency between the time and date values. + * Reading RTC current time locks the values in calendar shadow registers until Current date is read. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_RTC_GetDate(RTC_HandleTypeDef *hrtc, RTC_DateTypeDef *sDate, uint32_t Format) +{ + uint32_t datetmpreg; + + /* Check the parameters */ + assert_param(IS_RTC_FORMAT(Format)); + + /* Get the DR register */ + datetmpreg = (uint32_t)(hrtc->Instance->DR & RTC_DR_RESERVED_MASK); + + /* Fill the structure fields with the read parameters */ + sDate->Year = (uint8_t)((datetmpreg & (RTC_DR_YT | RTC_DR_YU)) >> RTC_DR_YU_Pos); + sDate->Month = (uint8_t)((datetmpreg & (RTC_DR_MT | RTC_DR_MU)) >> RTC_DR_MU_Pos); + sDate->Date = (uint8_t) (datetmpreg & (RTC_DR_DT | RTC_DR_DU)); + sDate->WeekDay = (uint8_t)((datetmpreg & (RTC_DR_WDU)) >> RTC_DR_WDU_Pos); + + /* Check the input parameters format */ + if(Format == RTC_FORMAT_BIN) + { + /* Convert the date structure parameters to Binary format */ + sDate->Year = (uint8_t)RTC_Bcd2ToByte(sDate->Year); + sDate->Month = (uint8_t)RTC_Bcd2ToByte(sDate->Month); + sDate->Date = (uint8_t)RTC_Bcd2ToByte(sDate->Date); + } + return HAL_OK; +} + +/** + * @} + */ + +/** @defgroup RTC_Exported_Functions_Group3 RTC Alarm functions + * @brief RTC Alarm functions + * +@verbatim + =============================================================================== + ##### RTC Alarm functions ##### + =============================================================================== + + [..] This section provides functions allowing to configure Alarm feature + +@endverbatim + * @{ + */ +/** + * @brief Set the specified RTC Alarm. + * @param hrtc RTC handle + * @param sAlarm Pointer to Alarm 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_RTC_SetAlarm(RTC_HandleTypeDef *hrtc, RTC_AlarmTypeDef *sAlarm, uint32_t Format) +{ + uint32_t tickstart; + uint32_t tmpreg; + uint32_t subsecondtmpreg; + + /* Check the parameters */ + assert_param(IS_RTC_FORMAT(Format)); + assert_param(IS_RTC_ALARM(sAlarm->Alarm)); + assert_param(IS_RTC_ALARM_MASK(sAlarm->AlarmMask)); + assert_param(IS_RTC_ALARM_DATE_WEEKDAY_SEL(sAlarm->AlarmDateWeekDaySel)); + assert_param(IS_RTC_ALARM_SUB_SECOND_VALUE(sAlarm->AlarmTime.SubSeconds)); + assert_param(IS_RTC_ALARM_SUB_SECOND_MASK(sAlarm->AlarmSubSecondMask)); + + /* Process Locked */ + __HAL_LOCK(hrtc); + + hrtc->State = HAL_RTC_STATE_BUSY; + + if(Format == RTC_FORMAT_BIN) + { + if((hrtc->Instance->CR & RTC_CR_FMT) != 0u) + { + assert_param(IS_RTC_HOUR12(sAlarm->AlarmTime.Hours)); + assert_param(IS_RTC_HOURFORMAT12(sAlarm->AlarmTime.TimeFormat)); + } + else + { + sAlarm->AlarmTime.TimeFormat = 0x00u; + assert_param(IS_RTC_HOUR24(sAlarm->AlarmTime.Hours)); + } + assert_param(IS_RTC_MINUTES(sAlarm->AlarmTime.Minutes)); + assert_param(IS_RTC_SECONDS(sAlarm->AlarmTime.Seconds)); + + if(sAlarm->AlarmDateWeekDaySel == RTC_ALARMDATEWEEKDAYSEL_DATE) + { + assert_param(IS_RTC_ALARM_DATE_WEEKDAY_DATE(sAlarm->AlarmDateWeekDay)); + } + else + { + assert_param(IS_RTC_ALARM_DATE_WEEKDAY_WEEKDAY(sAlarm->AlarmDateWeekDay)); + } + + tmpreg = (((uint32_t)RTC_ByteToBcd2(sAlarm->AlarmTime.Hours) << RTC_ALRMAR_HU_Pos) | \ + ((uint32_t)RTC_ByteToBcd2(sAlarm->AlarmTime.Minutes) << RTC_ALRMAR_MNU_Pos) | \ + ((uint32_t)RTC_ByteToBcd2(sAlarm->AlarmTime.Seconds)) | \ + ((uint32_t)(sAlarm->AlarmTime.TimeFormat) << RTC_TR_PM_Pos) | \ + ((uint32_t)RTC_ByteToBcd2(sAlarm->AlarmDateWeekDay) << RTC_ALRMAR_DU_Pos) | \ + ((uint32_t)sAlarm->AlarmDateWeekDaySel) | \ + ((uint32_t)sAlarm->AlarmMask)); + } + else + { + if((hrtc->Instance->CR & RTC_CR_FMT) != 0u) + { + assert_param(IS_RTC_HOUR12(RTC_Bcd2ToByte(sAlarm->AlarmTime.Hours))); + assert_param(IS_RTC_HOURFORMAT12(sAlarm->AlarmTime.TimeFormat)); + } + else + { + sAlarm->AlarmTime.TimeFormat = 0x00u; + assert_param(IS_RTC_HOUR24(RTC_Bcd2ToByte(sAlarm->AlarmTime.Hours))); + } + + assert_param(IS_RTC_MINUTES(RTC_Bcd2ToByte(sAlarm->AlarmTime.Minutes))); + assert_param(IS_RTC_SECONDS(RTC_Bcd2ToByte(sAlarm->AlarmTime.Seconds))); + + if(sAlarm->AlarmDateWeekDaySel == RTC_ALARMDATEWEEKDAYSEL_DATE) + { + assert_param(IS_RTC_ALARM_DATE_WEEKDAY_DATE(RTC_Bcd2ToByte(sAlarm->AlarmDateWeekDay))); + } + else + { + assert_param(IS_RTC_ALARM_DATE_WEEKDAY_WEEKDAY(RTC_Bcd2ToByte(sAlarm->AlarmDateWeekDay))); + } + + tmpreg = (((uint32_t)(sAlarm->AlarmTime.Hours) << RTC_ALRMAR_HU_Pos) | \ + ((uint32_t)(sAlarm->AlarmTime.Minutes) << RTC_ALRMAR_MNU_Pos) | \ + ((uint32_t) sAlarm->AlarmTime.Seconds) | \ + ((uint32_t)(sAlarm->AlarmTime.TimeFormat) << RTC_TR_PM_Pos) | \ + ((uint32_t)(sAlarm->AlarmDateWeekDay) << RTC_ALRMAR_DU_Pos) | \ + ((uint32_t) sAlarm->AlarmDateWeekDaySel) | \ + ((uint32_t) sAlarm->AlarmMask)); + } + + /* Configure the Alarm A or Alarm B Sub Second registers */ + subsecondtmpreg = (uint32_t)((uint32_t)(sAlarm->AlarmTime.SubSeconds) | (uint32_t)(sAlarm->AlarmSubSecondMask)); + + /* Disable the write protection for RTC registers */ + __HAL_RTC_WRITEPROTECTION_DISABLE(hrtc); + + /* Configure the Alarm register */ + if(sAlarm->Alarm == RTC_ALARM_A) + { + /* Disable the Alarm A interrupt */ + __HAL_RTC_ALARMA_DISABLE(hrtc); + + /* In case of interrupt mode is used, the interrupt source must disabled */ + __HAL_RTC_ALARM_DISABLE_IT(hrtc, RTC_IT_ALRA); + + tickstart = HAL_GetTick(); + /* Wait till RTC ALRAWF flag is set and if Time out is reached exit */ + while(__HAL_RTC_ALARM_GET_FLAG(hrtc, RTC_FLAG_ALRAWF) == 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; + } + } + + hrtc->Instance->ALRMAR = (uint32_t)tmpreg; + /* Configure the Alarm A Sub Second register */ + hrtc->Instance->ALRMASSR = subsecondtmpreg; + /* Configure the Alarm state: Enable Alarm */ + __HAL_RTC_ALARMA_ENABLE(hrtc); + } + else + { + /* Disable the Alarm B interrupt */ + __HAL_RTC_ALARMB_DISABLE(hrtc); + + /* In case of interrupt mode is used, the interrupt source must disabled */ + __HAL_RTC_ALARM_DISABLE_IT(hrtc, RTC_IT_ALRB); + + tickstart = HAL_GetTick(); + /* Wait till RTC ALRBWF flag is set and if Time out is reached exit */ + while(__HAL_RTC_ALARM_GET_FLAG(hrtc, RTC_FLAG_ALRBWF) == 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; + } + } + + hrtc->Instance->ALRMBR = (uint32_t)tmpreg; + /* Configure the Alarm B Sub Second register */ + hrtc->Instance->ALRMBSSR = subsecondtmpreg; + /* Configure the Alarm state: Enable Alarm */ + __HAL_RTC_ALARMB_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 the specified RTC Alarm with Interrupt. + * @param hrtc RTC handle + * @param sAlarm Pointer to Alarm 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 + * @note The Alarm register can only be written when the corresponding Alarm + * is disabled (Use the HAL_RTC_DeactivateAlarm()). + * @note The HAL_RTC_SetTime() must be called before enabling the Alarm feature. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_RTC_SetAlarm_IT(RTC_HandleTypeDef *hrtc, RTC_AlarmTypeDef *sAlarm, uint32_t Format) +{ + uint32_t tickstart; + uint32_t tmpreg; + uint32_t subsecondtmpreg; + + /* Check the parameters */ + assert_param(IS_RTC_FORMAT(Format)); + assert_param(IS_RTC_ALARM(sAlarm->Alarm)); + assert_param(IS_RTC_ALARM_MASK(sAlarm->AlarmMask)); + assert_param(IS_RTC_ALARM_DATE_WEEKDAY_SEL(sAlarm->AlarmDateWeekDaySel)); + assert_param(IS_RTC_ALARM_SUB_SECOND_VALUE(sAlarm->AlarmTime.SubSeconds)); + assert_param(IS_RTC_ALARM_SUB_SECOND_MASK(sAlarm->AlarmSubSecondMask)); + + /* Process Locked */ + __HAL_LOCK(hrtc); + + hrtc->State = HAL_RTC_STATE_BUSY; + + if(Format == RTC_FORMAT_BIN) + { + if((hrtc->Instance->CR & RTC_CR_FMT) != 0u) + { + assert_param(IS_RTC_HOUR12(sAlarm->AlarmTime.Hours)); + assert_param(IS_RTC_HOURFORMAT12(sAlarm->AlarmTime.TimeFormat)); + } + else + { + sAlarm->AlarmTime.TimeFormat = 0x00u; + assert_param(IS_RTC_HOUR24(sAlarm->AlarmTime.Hours)); + } + assert_param(IS_RTC_MINUTES(sAlarm->AlarmTime.Minutes)); + assert_param(IS_RTC_SECONDS(sAlarm->AlarmTime.Seconds)); + + if(sAlarm->AlarmDateWeekDaySel == RTC_ALARMDATEWEEKDAYSEL_DATE) + { + assert_param(IS_RTC_ALARM_DATE_WEEKDAY_DATE(sAlarm->AlarmDateWeekDay)); + } + else + { + assert_param(IS_RTC_ALARM_DATE_WEEKDAY_WEEKDAY(sAlarm->AlarmDateWeekDay)); + } + tmpreg = (((uint32_t)RTC_ByteToBcd2(sAlarm->AlarmTime.Hours) << RTC_ALRMAR_HU_Pos) | \ + ((uint32_t)RTC_ByteToBcd2(sAlarm->AlarmTime.Minutes) << RTC_ALRMAR_MNU_Pos) | \ + ((uint32_t)RTC_ByteToBcd2(sAlarm->AlarmTime.Seconds)) | \ + ((uint32_t)(sAlarm->AlarmTime.TimeFormat) << RTC_TR_PM_Pos) | \ + ((uint32_t)RTC_ByteToBcd2(sAlarm->AlarmDateWeekDay) << RTC_ALRMAR_DU_Pos) | \ + ((uint32_t)sAlarm->AlarmDateWeekDaySel) | \ + ((uint32_t)sAlarm->AlarmMask)); + } + else + { + if((hrtc->Instance->CR & RTC_CR_FMT) != 0u) + { + assert_param(IS_RTC_HOUR12(RTC_Bcd2ToByte(sAlarm->AlarmTime.Hours))); + assert_param(IS_RTC_HOURFORMAT12(sAlarm->AlarmTime.TimeFormat)); + } + else + { + sAlarm->AlarmTime.TimeFormat = 0x00u; + assert_param(IS_RTC_HOUR24(RTC_Bcd2ToByte(sAlarm->AlarmTime.Hours))); + } + + assert_param(IS_RTC_MINUTES(RTC_Bcd2ToByte(sAlarm->AlarmTime.Minutes))); + assert_param(IS_RTC_SECONDS(RTC_Bcd2ToByte(sAlarm->AlarmTime.Seconds))); + + if(sAlarm->AlarmDateWeekDaySel == RTC_ALARMDATEWEEKDAYSEL_DATE) + { + assert_param(IS_RTC_ALARM_DATE_WEEKDAY_DATE(RTC_Bcd2ToByte(sAlarm->AlarmDateWeekDay))); + } + else + { + assert_param(IS_RTC_ALARM_DATE_WEEKDAY_WEEKDAY(RTC_Bcd2ToByte(sAlarm->AlarmDateWeekDay))); + } + tmpreg = (((uint32_t)(sAlarm->AlarmTime.Hours) << RTC_ALRMAR_HU_Pos) | \ + ((uint32_t)(sAlarm->AlarmTime.Minutes) << RTC_ALRMAR_MNU_Pos) | \ + ((uint32_t) sAlarm->AlarmTime.Seconds) | \ + ((uint32_t)(sAlarm->AlarmTime.TimeFormat) << RTC_TR_PM_Pos) | \ + ((uint32_t)(sAlarm->AlarmDateWeekDay) << RTC_ALRMAR_DU_Pos) | \ + ((uint32_t) sAlarm->AlarmDateWeekDaySel) | \ + ((uint32_t) sAlarm->AlarmMask)); + } + /* Configure the Alarm A or Alarm B Sub Second registers */ + subsecondtmpreg = (uint32_t)((uint32_t)(sAlarm->AlarmTime.SubSeconds) | (uint32_t)(sAlarm->AlarmSubSecondMask)); + + /* Disable the write protection for RTC registers */ + __HAL_RTC_WRITEPROTECTION_DISABLE(hrtc); + + /* Configure the Alarm register */ + if(sAlarm->Alarm == RTC_ALARM_A) + { + /* Disable the Alarm A interrupt */ + __HAL_RTC_ALARMA_DISABLE(hrtc); + + /* Clear flag alarm A */ + __HAL_RTC_ALARM_CLEAR_FLAG(hrtc, RTC_FLAG_ALRAF); + + tickstart = HAL_GetTick(); + /* Wait till RTC ALRAWF flag is set and if Time out is reached exit */ + while(__HAL_RTC_ALARM_GET_FLAG(hrtc, RTC_FLAG_ALRAWF) == 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; + } + } + + hrtc->Instance->ALRMAR = (uint32_t)tmpreg; + /* Configure the Alarm A Sub Second register */ + hrtc->Instance->ALRMASSR = subsecondtmpreg; + /* Configure the Alarm state: Enable Alarm */ + __HAL_RTC_ALARMA_ENABLE(hrtc); + /* Configure the Alarm interrupt */ + __HAL_RTC_ALARM_ENABLE_IT(hrtc,RTC_IT_ALRA); + } + else + { + /* Disable the Alarm B interrupt */ + __HAL_RTC_ALARMB_DISABLE(hrtc); + + /* Clear flag alarm B */ + __HAL_RTC_ALARM_CLEAR_FLAG(hrtc, RTC_FLAG_ALRBF); + + tickstart = HAL_GetTick(); + /* Wait till RTC ALRBWF flag is set and if Time out is reached exit */ + while(__HAL_RTC_ALARM_GET_FLAG(hrtc, RTC_FLAG_ALRBWF) == 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; + } + } + + hrtc->Instance->ALRMBR = (uint32_t)tmpreg; + /* Configure the Alarm B Sub Second register */ + hrtc->Instance->ALRMBSSR = subsecondtmpreg; + /* Configure the Alarm state: Enable Alarm */ + __HAL_RTC_ALARMB_ENABLE(hrtc); + /* Configure the Alarm interrupt */ + __HAL_RTC_ALARM_ENABLE_IT(hrtc, RTC_IT_ALRB); + } + + /* RTC Alarm Interrupt Configuration: EXTI configuration */ + __HAL_RTC_ALARM_EXTI_ENABLE_IT(); + + __HAL_RTC_ALARM_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 the specified RTC Alarm. + * @param hrtc RTC handle + * @param Alarm Specifies the Alarm. + * This parameter can be one of the following values: + * @arg RTC_ALARM_A: AlarmA + * @arg RTC_ALARM_B: AlarmB + * @retval HAL status + */ +HAL_StatusTypeDef HAL_RTC_DeactivateAlarm(RTC_HandleTypeDef *hrtc, uint32_t Alarm) +{ + uint32_t tickstart; + + /* Check the parameters */ + assert_param(IS_RTC_ALARM(Alarm)); + + /* Process Locked */ + __HAL_LOCK(hrtc); + + hrtc->State = HAL_RTC_STATE_BUSY; + + /* Disable the write protection for RTC registers */ + __HAL_RTC_WRITEPROTECTION_DISABLE(hrtc); + + if(Alarm == RTC_ALARM_A) + { + /* AlarmA */ + __HAL_RTC_ALARMA_DISABLE(hrtc); + + /* In case of interrupt mode is used, the interrupt source must disabled */ + __HAL_RTC_ALARM_DISABLE_IT(hrtc, RTC_IT_ALRA); + + tickstart = HAL_GetTick(); + + /* Wait till RTC ALRxWF flag is set and if Time out is reached exit */ + while(__HAL_RTC_ALARM_GET_FLAG(hrtc, RTC_FLAG_ALRAWF) == 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; + } + } + } + else + { + /* AlarmB */ + __HAL_RTC_ALARMB_DISABLE(hrtc); + + /* In case of interrupt mode is used, the interrupt source must disabled */ + __HAL_RTC_ALARM_DISABLE_IT(hrtc,RTC_IT_ALRB); + + tickstart = HAL_GetTick(); + + /* Wait till RTC ALRxWF flag is set and if Time out is reached exit */ + while(__HAL_RTC_ALARM_GET_FLAG(hrtc, RTC_FLAG_ALRBWF) == 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 the RTC Alarm value and masks. + * @param hrtc RTC handle + * @param sAlarm Pointer to Date structure + * @param Alarm Specifies the Alarm. + * This parameter can be one of the following values: + * @arg RTC_ALARM_A: AlarmA + * @arg RTC_ALARM_B: AlarmB + * @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_RTC_GetAlarm(RTC_HandleTypeDef *hrtc, RTC_AlarmTypeDef *sAlarm, uint32_t Alarm, uint32_t Format) +{ + uint32_t tmpreg; + uint32_t subsecondtmpreg; + + /* Check the parameters */ + assert_param(IS_RTC_FORMAT(Format)); + assert_param(IS_RTC_ALARM(Alarm)); + + if(Alarm == RTC_ALARM_A) + { + /* AlarmA */ + sAlarm->Alarm = RTC_ALARM_A; + + tmpreg = (uint32_t)(hrtc->Instance->ALRMAR); + subsecondtmpreg = (uint32_t)((hrtc->Instance->ALRMASSR ) & RTC_ALRMASSR_SS); + + /* Fill the structure with the read parameters */ + sAlarm->AlarmTime.Hours = (uint8_t) ((tmpreg & (RTC_ALRMAR_HT | RTC_ALRMAR_HU)) >> RTC_ALRMAR_HU_Pos); + sAlarm->AlarmTime.Minutes = (uint8_t) ((tmpreg & (RTC_ALRMAR_MNT | RTC_ALRMAR_MNU)) >> RTC_ALRMAR_MNU_Pos); + sAlarm->AlarmTime.Seconds = (uint8_t) ( tmpreg & (RTC_ALRMAR_ST | RTC_ALRMAR_SU)); + sAlarm->AlarmTime.TimeFormat = (uint8_t) ((tmpreg & RTC_ALRMAR_PM) >> RTC_TR_PM_Pos); + sAlarm->AlarmTime.SubSeconds = (uint32_t) subsecondtmpreg; + sAlarm->AlarmDateWeekDay = (uint8_t) ((tmpreg & (RTC_ALRMAR_DT | RTC_ALRMAR_DU)) >> RTC_ALRMAR_DU_Pos); + sAlarm->AlarmDateWeekDaySel = (uint32_t) (tmpreg & RTC_ALRMAR_WDSEL); + sAlarm->AlarmMask = (uint32_t) (tmpreg & RTC_ALARMMASK_ALL); + } + else + { + sAlarm->Alarm = RTC_ALARM_B; + + tmpreg = (uint32_t)(hrtc->Instance->ALRMBR); + subsecondtmpreg = (uint32_t)((hrtc->Instance->ALRMBSSR) & RTC_ALRMBSSR_SS); + + /* Fill the structure with the read parameters */ + sAlarm->AlarmTime.Hours = (uint8_t) ((tmpreg & (RTC_ALRMBR_HT | RTC_ALRMBR_HU)) >> RTC_ALRMBR_HU_Pos); + sAlarm->AlarmTime.Minutes = (uint8_t) ((tmpreg & (RTC_ALRMBR_MNT | RTC_ALRMBR_MNU)) >> RTC_ALRMBR_MNU_Pos); + sAlarm->AlarmTime.Seconds = (uint8_t) ( tmpreg & (RTC_ALRMBR_ST | RTC_ALRMBR_SU)); + sAlarm->AlarmTime.TimeFormat = (uint8_t) ((tmpreg & RTC_ALRMBR_PM) >> RTC_TR_PM_Pos); + sAlarm->AlarmTime.SubSeconds = (uint32_t) subsecondtmpreg; + sAlarm->AlarmDateWeekDay = (uint8_t) ((tmpreg & (RTC_ALRMBR_DT | RTC_ALRMBR_DU)) >> RTC_ALRMBR_DU_Pos); + sAlarm->AlarmDateWeekDaySel = (uint32_t) (tmpreg & RTC_ALRMBR_WDSEL); + sAlarm->AlarmMask = (uint32_t) (tmpreg & RTC_ALARMMASK_ALL); + } + + if(Format == RTC_FORMAT_BIN) + { + sAlarm->AlarmTime.Hours = RTC_Bcd2ToByte(sAlarm->AlarmTime.Hours); + sAlarm->AlarmTime.Minutes = RTC_Bcd2ToByte(sAlarm->AlarmTime.Minutes); + sAlarm->AlarmTime.Seconds = RTC_Bcd2ToByte(sAlarm->AlarmTime.Seconds); + sAlarm->AlarmDateWeekDay = RTC_Bcd2ToByte(sAlarm->AlarmDateWeekDay); + } + + return HAL_OK; +} + +/** + * @brief Handle Alarm interrupt request. + * @param hrtc RTC handle + * @retval None + */ +void HAL_RTC_AlarmIRQHandler(RTC_HandleTypeDef* hrtc) +{ + + /* Clear the EXTI's line Flag for RTC Alarm */ + __HAL_RTC_ALARM_EXTI_CLEAR_FLAG(); + + /* Get the AlarmA interrupt source enable status */ + if(__HAL_RTC_ALARM_GET_IT_SOURCE(hrtc, RTC_IT_ALRA) != 0u) + { + /* Get the pending status of the AlarmA Interrupt */ + if(__HAL_RTC_ALARM_GET_FLAG(hrtc, RTC_FLAG_ALRAF) != 0u) + { + /* Clear the AlarmA interrupt pending bit */ + __HAL_RTC_ALARM_CLEAR_FLAG(hrtc, RTC_FLAG_ALRAF); + + /* AlarmA callback */ + #if (USE_HAL_RTC_REGISTER_CALLBACKS == 1) + hrtc->AlarmAEventCallback(hrtc); + #else + HAL_RTC_AlarmAEventCallback(hrtc); + #endif /* USE_HAL_RTC_REGISTER_CALLBACKS */ + } + } + + /* Get the AlarmB interrupt source enable status */ + if(__HAL_RTC_ALARM_GET_IT_SOURCE(hrtc, RTC_IT_ALRB) != 0u) + { + /* Get the pending status of the AlarmB Interrupt */ + if(__HAL_RTC_ALARM_GET_FLAG(hrtc, RTC_FLAG_ALRBF) != 0u) + { + /* Clear the AlarmB interrupt pending bit */ + __HAL_RTC_ALARM_CLEAR_FLAG(hrtc, RTC_FLAG_ALRBF); + + /* AlarmB callback */ + #if (USE_HAL_RTC_REGISTER_CALLBACKS == 1) + hrtc->AlarmBEventCallback(hrtc); + #else + HAL_RTCEx_AlarmBEventCallback(hrtc); + #endif /* USE_HAL_RTC_REGISTER_CALLBACKS */ + } + } + + /* Change RTC state */ + hrtc->State = HAL_RTC_STATE_READY; +} + +/** + * @brief Alarm A callback. + * @param hrtc RTC handle + * @retval None + */ +__weak void HAL_RTC_AlarmAEventCallback(RTC_HandleTypeDef *hrtc) +{ + /* Prevent unused argument(s) compilation warning */ + UNUSED(hrtc); + + /* NOTE : This function should not be modified, when the callback is needed, + the HAL_RTC_AlarmAEventCallback could be implemented in the user file + */ +} + +/** + * @brief Handle AlarmA Polling request. + * @param hrtc RTC handle + * @param Timeout Timeout duration + * @retval HAL status + */ +HAL_StatusTypeDef HAL_RTC_PollForAlarmAEvent(RTC_HandleTypeDef *hrtc, uint32_t Timeout) +{ + + uint32_t tickstart = HAL_GetTick(); + + while(__HAL_RTC_ALARM_GET_FLAG(hrtc, RTC_FLAG_ALRAF) == 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 interrupt pending bit */ + __HAL_RTC_ALARM_CLEAR_FLAG(hrtc, RTC_FLAG_ALRAF); + + /* Change RTC state */ + hrtc->State = HAL_RTC_STATE_READY; + + return HAL_OK; +} + +/** + * @} + */ + +/** @defgroup RTC_Exported_Functions_Group4 Peripheral Control functions + * @brief Peripheral Control functions + * +@verbatim + =============================================================================== + ##### Peripheral Control functions ##### + =============================================================================== + [..] + This subsection provides functions allowing to + (+) Wait for RTC Time and Date Synchronization + +@endverbatim + * @{ + */ + +/** + * @brief Wait until the RTC Time and Date registers (RTC_TR and RTC_DR) are + * synchronized with RTC APB clock. + * @note The RTC Resynchronization mode is write protected, use the + * __HAL_RTC_WRITEPROTECTION_DISABLE() before calling this function. + * @note To read the calendar through the shadow registers after Calendar + * initialization, calendar update or after wakeup from low power modes + * the software must first clear the RSF flag. + * The software must then wait until it is set again before reading + * the calendar, which means that the calendar registers have been + * correctly copied into the RTC_TR and RTC_DR shadow registers. + * @param hrtc RTC handle + * @retval HAL status + */ +HAL_StatusTypeDef HAL_RTC_WaitForSynchro(RTC_HandleTypeDef* hrtc) +{ + uint32_t tickstart; + + /* Clear RSF flag */ + hrtc->Instance->ISR &= (uint32_t)RTC_RSF_MASK; + + tickstart = HAL_GetTick(); + + /* Wait the registers to be synchronised */ + while((hrtc->Instance->ISR & RTC_ISR_RSF) == 0u) + { + if((HAL_GetTick() - tickstart ) > RTC_TIMEOUT_VALUE) + { + return HAL_TIMEOUT; + } + } + + return HAL_OK; +} + +/** + * @} + */ + +/** @defgroup RTC_Exported_Functions_Group5 Peripheral State functions + * @brief Peripheral State functions + * +@verbatim + =============================================================================== + ##### Peripheral State functions ##### + =============================================================================== + [..] + This subsection provides functions allowing to + (+) Get RTC state + +@endverbatim + * @{ + */ +/** + * @brief Return the RTC handle state. + * @param hrtc RTC handle + * @retval HAL state + */ +HAL_RTCStateTypeDef HAL_RTC_GetState(RTC_HandleTypeDef* hrtc) +{ + /* Return RTC handle state */ + return hrtc->State; +} + +/** + * @} + */ + +/** + * @} + */ + +/** @defgroup RTC_Private_Functions RTC Private functions + * @{ + */ +/** + * @brief Enter the RTC Initialization mode. + * @note The RTC Initialization mode is write protected, use the + * __HAL_RTC_WRITEPROTECTION_DISABLE() before calling this function. + * @param hrtc RTC handle + * @retval HAL status + */ +HAL_StatusTypeDef RTC_EnterInitMode(RTC_HandleTypeDef* hrtc) +{ + uint32_t tickstart ; + + /* Check if the Initialization mode is set */ + if((hrtc->Instance->ISR & RTC_ISR_INITF) == 0u) + { + /* Set the Initialization mode */ + hrtc->Instance->ISR = (uint32_t)RTC_INIT_MASK; + + tickstart = HAL_GetTick(); + /* Wait till RTC is in INIT state and if Time out is reached exit */ + while((hrtc->Instance->ISR & RTC_ISR_INITF) == 0u) + { + if((HAL_GetTick() - tickstart ) > RTC_TIMEOUT_VALUE) + { + return HAL_TIMEOUT; + } + } + } + + return HAL_OK; +} + + +/** + * @brief Convert a 2 digit decimal to BCD format. + * @param Value Byte to be converted + * @retval Converted byte + */ +uint8_t RTC_ByteToBcd2(uint8_t Value) +{ + uint32_t bcdhigh = 0u; + uint8_t Param = Value; + + while(Param >= 10u) + { + bcdhigh++; + Param -= 10u; + } + + return ((uint8_t)(bcdhigh << 4u) | Param); +} + +/** + * @brief Convert from 2 digit BCD to Binary. + * @param Value: BCD value to be converted + * @retval Converted word + */ +uint8_t RTC_Bcd2ToByte(uint8_t Value) +{ + uint8_t tmp; + tmp = ((Value & 0xF0u) >> 4u) * 10u; + return (tmp + (Value & 0x0Fu)); +} + +/** + * @} + */ + +#endif /* HAL_RTC_MODULE_ENABLED */ +/** + * @} + */ + +/** + * @} + */ + +/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/