Collaboration diagram for HAL TimeBase RTC Alarm Template:

Macros
#define	RTC_CLOCK_SOURCE_HSE
#define	RTC_ASYNCH_PREDIV 99U
#define	RTC_SYNCH_PREDIV 9U
#define	RCC_RTCCLKSOURCE_1MHZ ((uint32_t)((uint32_t)RCC_BDCR_RTCSEL \| (uint32_t)((HSE_VALUE/1000000U) << 16U)))

Functions
void	RTC_Alarm_IRQHandler (void)
	This function handles RTC ALARM interrupt request.
HAL_StatusTypeDef	HAL_InitTick (uint32_t TickPriority)
	This function configures the RTC_ALARMA as a time base source. The time source is configured to have 1ms time base with a dedicated Tick interrupt priority.
void	HAL_SuspendTick (void)
	Suspend Tick increment.
void	HAL_ResumeTick (void)
	Resume Tick increment.
void	HAL_RTC_AlarmAEventCallback (RTC_HandleTypeDef *hrtc)
	ALARM A Event Callback in non blocking mode.

Variables
RTC_HandleTypeDef	hRTC_Handle

Detailed Description

Macro Definition Documentation

◆ RCC_RTCCLKSOURCE_1MHZ

#define RCC_RTCCLKSOURCE_1MHZ ((uint32_t)((uint32_t)RCC_BDCR_RTCSEL | (uint32_t)((HSE_VALUE/1000000U) << 16U)))

Definition at line 74 of file stm32f4xx_hal_timebase_rtc_alarm_template.c.

Referenced by HAL_InitTick().

◆ RTC_ASYNCH_PREDIV

#define RTC_ASYNCH_PREDIV 99U

Definition at line 72 of file stm32f4xx_hal_timebase_rtc_alarm_template.c.

Referenced by HAL_InitTick().

◆ RTC_CLOCK_SOURCE_HSE

#define RTC_CLOCK_SOURCE_HSE

Definition at line 67 of file stm32f4xx_hal_timebase_rtc_alarm_template.c.

◆ RTC_SYNCH_PREDIV

#define RTC_SYNCH_PREDIV 9U

Definition at line 73 of file stm32f4xx_hal_timebase_rtc_alarm_template.c.

Referenced by HAL_InitTick().

Function Documentation

◆ HAL_InitTick()

HAL_StatusTypeDef HAL_InitTick ( uint32_t TickPriority )

This function configures the RTC_ALARMA as a time base source. The time source is configured to have 1ms time base with a dedicated Tick interrupt priority.

Note: This function is called automatically at the beginning of program after reset by HAL_Init() or at any time when clock is configured, by HAL_RCC_ClockConfig().

Parameters

TickPriority Tick interrupt priority.

Return values

HAL status

Definition at line 96 of file stm32f4xx_hal_timebase_rtc_alarm_template.c.

References __HAL_RCC_RTC_ENABLE, __HAL_RTC_ALARM_CLEAR_FLAG, __HAL_RTC_ALARM_ENABLE_IT, __HAL_RTC_ALARM_EXTI_ENABLE_IT, __HAL_RTC_ALARM_EXTI_ENABLE_RISING_EDGE, __HAL_RTC_ALARM_GET_FLAG, __HAL_RTC_ALARMA_DISABLE, __HAL_RTC_ALARMA_ENABLE, __HAL_RTC_WRITEPROTECTION_DISABLE, __HAL_RTC_WRITEPROTECTION_ENABLE, HAL_ERROR, HAL_NVIC_EnableIRQ(), HAL_NVIC_SetPriority(), HAL_OK, HAL_RCC_OscConfig(), HAL_RCCEx_PeriphCLKConfig(), HAL_RTC_Init(), hRTC_Handle, RCC_OscInitTypeDef::HSEState, RCC_OscInitTypeDef::LSEState, RCC_OscInitTypeDef::LSIState, RCC_OscInitTypeDef::OscillatorType, RCC_OscInitTypeDef::PLL, RCC_PLLInitTypeDef::PLLState, RCC_HSE_ON, RCC_LSE_ON, RCC_LSI_ON, RCC_OSCILLATORTYPE_HSE, RCC_OSCILLATORTYPE_LSE, RCC_OSCILLATORTYPE_LSI, RCC_PLL_NONE, RCC_RTCCLKSOURCE_1MHZ, RCC_RTCCLKSOURCE_LSE, RCC_RTCCLKSOURCE_LSI, RTC_ASYNCH_PREDIV, RTC_FLAG_ALRAF, RTC_FLAG_ALRAWF, RTC_HOURFORMAT_24, RTC_INIT_MASK, RTC_IT_ALRA, RTC_OUTPUT_DISABLE, RTC_OUTPUT_POLARITY_HIGH, RTC_OUTPUT_TYPE_OPENDRAIN, RTC_SYNCH_PREDIV, and uwTickPrio.

Here is the call graph for this function:

◆ HAL_ResumeTick()

void HAL_ResumeTick ( void )

Resume Tick increment.

Note: Enable the tick increment by Enabling RTC ALARM interrupt.

Return values

None

Definition at line 255 of file stm32f4xx_hal_timebase_rtc_alarm_template.c.

References __HAL_RTC_ALARM_ENABLE_IT, __HAL_RTC_WRITEPROTECTION_DISABLE, __HAL_RTC_WRITEPROTECTION_ENABLE, hRTC_Handle, and RTC_IT_ALRA.

◆ HAL_RTC_AlarmAEventCallback()

void HAL_RTC_AlarmAEventCallback ( RTC_HandleTypeDef * hrtc )

ALARM A Event Callback in non blocking mode.

Note: This function is called when RTC_ALARM interrupt took place, inside RTC_ALARM_IRQHandler(). It makes a direct call to HAL_IncTick() to increment a global variable "uwTick" used as application time base.

Parameters