HAL_StatusTypeDef HAL_RTC_Init(RTC_HandleTypeDef *hrtc)
{
HAL_StatusTypeDef status = HAL_ERROR;
/* Check RTC handler */
if(hrtc != NULL)
{
/* 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 defined(TAMP)
assert_param(IS_RTC_OUTPUT_PULLUP(hrtc->Init.OutPutPullUp));
#endif /* TAMP */
#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 defined(TAMP)
hrtc->InternalTamper1EventCallback = HAL_RTCEx_InternalTamper1EventCallback;
hrtc->InternalTamper2EventCallback = HAL_RTCEx_InternalTamper2EventCallback;
hrtc->InternalTamper3EventCallback = HAL_RTCEx_InternalTamper3EventCallback;
hrtc->InternalTamper4EventCallback = HAL_RTCEx_InternalTamper4EventCallback;
hrtc->InternalTamper5EventCallback = HAL_RTCEx_InternalTamper5EventCallback;
hrtc->InternalTamper6EventCallback = HAL_RTCEx_InternalTamper6EventCallback;
hrtc->InternalTamper8EventCallback = HAL_RTCEx_InternalTamper8EventCallback;
#endif /* TAMP */
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 /* (USE_HAL_RTC_REGISTER_CALLBACKS == 1) */
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 == 1) */
/* Set RTC state */
hrtc->State = HAL_RTC_STATE_BUSY;
/* Check whether the calendar needs to be initialized */
if (__HAL_RTC_IS_CALENDAR_INITIALIZED(hrtc) == 0U)
{
/* Disable the write protection for RTC registers */
__HAL_RTC_WRITEPROTECTION_DISABLE(hrtc);
/* Enter Initialization mode */
status = RTC_EnterInitMode(hrtc);
if (status == HAL_OK)
{
#if defined(TAMP)
/* Clear RTC_CR FMT, OSEL, POL and TAMPOE Bits */
hrtc->Instance->CR &= ~(RTC_CR_FMT | RTC_CR_POL | RTC_CR_OSEL | RTC_CR_TAMPOE);
#else
/* Clear RTC_CR FMT, OSEL and POL Bits */
hrtc->Instance->CR &= ~(RTC_CR_FMT | RTC_CR_OSEL | RTC_CR_POL);
#endif /* TAMP */
/* Set RTC_CR register */
hrtc->Instance->CR |= (hrtc->Init.HourFormat | hrtc->Init.OutPut | hrtc->Init.OutPutPolarity);
/* Configure the RTC PRER */
hrtc->Instance->PRER = (hrtc->Init.AsynchPrediv << RTC_PRER_PREDIV_A_Pos) | (hrtc->Init.SynchPrediv << RTC_PRER_PREDIV_S_Pos);
/* Exit Initialization mode */
status = RTC_ExitInitMode(hrtc);
}
if(status == HAL_OK)
{
#if defined(TAMP)
hrtc->Instance->CR &= ~(RTC_CR_TAMPALRM_PU | RTC_CR_TAMPALRM_TYPE | RTC_CR_OUT2EN);
hrtc->Instance->CR |= (hrtc->Init.OutPutPullUp | hrtc->Init.OutPutType | hrtc->Init.OutPutRemap);
#else
hrtc->Instance->OR &= ~(RTC_OR_ALARMOUTTYPE | RTC_OR_OUT_RMP);
hrtc->Instance->OR |= (hrtc->Init.OutPutType | hrtc->Init.OutPutRemap);
#endif /* TAMP */
}
/* Enable the write protection for RTC registers */
__HAL_RTC_WRITEPROTECTION_ENABLE(hrtc);
}
else
{
/* The calendar is already initialized */
status = HAL_OK;
}
if (status == HAL_OK)
{
/* Set RTC state */
hrtc->State = HAL_RTC_STATE_READY;
}
}
/* return status */
return status;
}
