/**
* @brief Initialize RTC block
*
* @note
* @param None
* @retval None
*/
static void Init_RTC(void)
{
/* Initialize the HW - 37Khz LSI being used*/
/* Enable the LSI clock */
__HAL_RCC_LSI_ENABLE();
/* Enable power module clock */
__PWR_CLK_ENABLE();
/* Enable acces to the RTC registers */
HAL_PWR_EnableBkUpAccess();
/**
* Write twice the value to flush the APB-AHB bridge
* This bit shall be written in the register before writing the next one
*/
HAL_PWR_EnableBkUpAccess();
/* Select LSI as RTC Input */
__HAL_RCC_RTC_CONFIG(RCC_RTCCLKSOURCE_LSI);
/* Enable RTC */
__HAL_RCC_RTC_ENABLE();
hrtc.Instance = RTC; /**< Define instance */
hrtc.Lock = HAL_UNLOCKED; /**< Initialize lock */
hrtc.State = HAL_RTC_STATE_READY; /**< Initialize state */
/**
* Bypass the shadow register
*/
HAL_RTCEx_EnableBypassShadow(&hrtc);
/**
* Set the Asynchronous prescaler
*/
hrtc.Init.AsynchPrediv = RTC_ASYNCH_PRESCALER;
hrtc.Init.SynchPrediv = RTC_SYNCH_PRESCALER;
HAL_RTC_Init(&hrtc);
/* Disable Write Protection */
__HAL_RTC_WRITEPROTECTION_DISABLE(&hrtc) ;
HAL_APP_RTC_Set_Wucksel(&hrtc, WUCKSEL_DIVIDER); /**< Tick timer is 55us */
/* Wait for LSI to be stable */
while(__HAL_RCC_GET_FLAG(RCC_FLAG_LSIRDY) == 0);
return;
}
void RtcInit( void )
{
RtcCalendar_t rtcInit;
if( RtcInitialized == false )
{
__HAL_RCC_RTC_ENABLE( );
RtcHandle.Instance = RTC;
RtcHandle.Init.HourFormat = RTC_HOURFORMAT_24;
RtcHandle.Init.AsynchPrediv = PREDIV_A; // RTC_ASYNCH_PREDIV;
RtcHandle.Init.SynchPrediv = PREDIV_S; // RTC_SYNCH_PREDIV;
RtcHandle.Init.OutPut = RTC_OUTPUT_DISABLE;
RtcHandle.Init.OutPutPolarity = RTC_OUTPUT_POLARITY_HIGH;
RtcHandle.Init.OutPutType = RTC_OUTPUT_TYPE_OPENDRAIN;
HAL_RTC_Init( &RtcHandle );
// Set Date: Friday 1st of January 2000
rtcInit.CalendarDate.Year = 0;
rtcInit.CalendarDate.Month = RTC_MONTH_JANUARY;
rtcInit.CalendarDate.Date = 1;
rtcInit.CalendarDate.WeekDay = RTC_WEEKDAY_SATURDAY;
HAL_RTC_SetDate( &RtcHandle, &rtcInit.CalendarDate, RTC_FORMAT_BIN );
// Set Time: 00:00:00
rtcInit.CalendarTime.Hours = 0;
rtcInit.CalendarTime.Minutes = 0;
rtcInit.CalendarTime.Seconds = 0;
rtcInit.CalendarTime.SecondFraction = 0;
rtcInit.CalendarTime.TimeFormat = RTC_HOURFORMAT12_AM;
rtcInit.CalendarTime.DayLightSaving = RTC_DAYLIGHTSAVING_NONE;
rtcInit.CalendarTime.StoreOperation = RTC_STOREOPERATION_RESET;
HAL_RTC_SetTime( &RtcHandle, &rtcInit.CalendarTime, RTC_FORMAT_BIN );
// Enable Direct Read of the calendar registers (not through Shadow registers)
HAL_RTCEx_EnableBypassShadow( &RtcHandle );
HAL_NVIC_SetPriority( RTC_Alarm_IRQn, 1, 0 );
HAL_NVIC_EnableIRQ( RTC_Alarm_IRQn );
RtcInitialized = true;
}
}
/*!
* @brief Configures the RTC timer
* @note The timer is based on the RTC
* @param none
* @retval none
*/
static void HW_RTC_SetConfig( void )
{
RTC_TimeTypeDef RTC_TimeStruct;
RTC_DateTypeDef RTC_DateStruct;
RtcHandle.Instance = RTC;
RtcHandle.Init.HourFormat = RTC_HOURFORMAT_24;
RtcHandle.Init.AsynchPrediv = PREDIV_A; /* RTC_ASYNCH_PREDIV; */
RtcHandle.Init.SynchPrediv = PREDIV_S; /* RTC_SYNCH_PREDIV; */
RtcHandle.Init.OutPut = RTC_OUTPUT;
RtcHandle.Init.OutPutPolarity = RTC_OUTPUT_POLARITY_HIGH;
RtcHandle.Init.OutPutType = RTC_OUTPUT_TYPE_OPENDRAIN;
HAL_RTC_Init( &RtcHandle );
/*Monday 1st January 2016*/
RTC_DateStruct.Year = 0;
RTC_DateStruct.Month = RTC_MONTH_JANUARY;
RTC_DateStruct.Date = 1;
RTC_DateStruct.WeekDay = RTC_WEEKDAY_MONDAY;
HAL_RTC_SetDate(&RtcHandle , &RTC_DateStruct, RTC_FORMAT_BIN);
/*at 0:0:0*/
RTC_TimeStruct.Hours = 0;
RTC_TimeStruct.Minutes = 0;
RTC_TimeStruct.Seconds = 0;
RTC_TimeStruct.TimeFormat = 0;
RTC_TimeStruct.SubSeconds = 0;
RTC_TimeStruct.StoreOperation = RTC_DAYLIGHTSAVING_NONE;
RTC_TimeStruct.DayLightSaving = RTC_STOREOPERATION_RESET;
HAL_RTC_SetTime(&RtcHandle , &RTC_TimeStruct, RTC_FORMAT_BIN);
/*Enable Direct Read of the calendar registers (not through Shadow) */
HAL_RTCEx_EnableBypassShadow(&RtcHandle);
}
