Interrupts and flags management functions. More...

Collaboration diagram for Interrupts and flags management functions:

Functions
void	RTC_ITConfig (uint32_t RTC_IT, FunctionalState NewState)
	Enables or disables the specified RTC interrupts. More...

FlagStatus	RTC_GetFlagStatus (uint32_t RTC_FLAG)
	Checks whether the specified RTC flag is set or not. More...

void	RTC_ClearFlag (uint32_t RTC_FLAG)
	Clears the RTC's pending flags. More...

ITStatus	RTC_GetITStatus (uint32_t RTC_IT)
	Checks whether the specified RTC interrupt has occurred or not. More...

void	RTC_ClearITPendingBit (uint32_t RTC_IT)
	Clears the RTC's interrupt pending bits. More...

Detailed Description

Interrupts and flags management functions.

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              ##### Interrupts and flags management functions #####
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 [..] All RTC interrupts are connected to the EXTI controller.
 
   (+) To enable the RTC Alarm interrupt, the following sequence is required:
       (++) Configure and enable the EXTI Line 17 in interrupt mode and select 
            the rising edge sensitivity using the EXTI_Init() function.
       (++) Configure and enable the RTC_Alarm IRQ channel in the NVIC using the 
            NVIC_Init() function.
       (++) Configure the RTC to generate RTC alarms (Alarm A and/or Alarm B) using
            the RTC_SetAlarm() and RTC_AlarmCmd() functions.

   (+) To enable the RTC Wakeup interrupt, the following sequence is required:
       (++) Configure and enable the EXTI Line 22 in interrupt mode and select the
            rising edge sensitivity using the EXTI_Init() function.
       (++) Configure and enable the RTC_WKUP IRQ channel in the NVIC using the 
            NVIC_Init() function.
       (++) Configure the RTC to generate the RTC wakeup timer event using the 
            RTC_WakeUpClockConfig(), RTC_SetWakeUpCounter() and RTC_WakeUpCmd() 
            functions.

   (+) To enable the RTC Tamper interrupt, the following sequence is required:
       (++) Configure and enable the EXTI Line 21 in interrupt mode and select 
            the rising edge sensitivity using the EXTI_Init() function.
       (++) Configure and enable the TAMP_STAMP IRQ channel in the NVIC using the
            NVIC_Init() function.
       (++) Configure the RTC to detect the RTC tamper event using the 
            RTC_TamperTriggerConfig() and RTC_TamperCmd() functions.

   (+) To enable the RTC TimeStamp interrupt, the following sequence is required:
       (++) Configure and enable the EXTI Line 21 in interrupt mode and select the
            rising edge sensitivity using the EXTI_Init() function.
       (++) Configure and enable the TAMP_STAMP IRQ channel in the NVIC using the 
            NVIC_Init() function.
       (++) Configure the RTC to detect the RTC time stamp event using the 
            RTC_TimeStampCmd() functions.

Function Documentation

void RTC_ClearFlag ( uint32_t RTC_FLAG )

Clears the RTC's pending flags.

Parameters

RTC_FLAG

specifies the RTC flag to clear. This parameter can be any combination of the following values:

RTC_FLAG_TAMP1F: Tamper 1 event flag
RTC_FLAG_TSOVF: Time Stamp Overflow flag
RTC_FLAG_TSF: Time Stamp event flag
RTC_FLAG_WUTF: WakeUp Timer flag
RTC_FLAG_ALRBF: Alarm B flag
RTC_FLAG_ALRAF: Alarm A flag
RTC_FLAG_RSF: Registers Synchronized flag

Return values

None

Definition at line 2641 of file stm32f4xx_rtc.c.

void RTC_ClearITPendingBit ( uint32_t RTC_IT )

Clears the RTC's interrupt pending bits.

Parameters

RTC_IT

specifies the RTC interrupt pending bit to clear. This parameter can be any combination of the following values:

RTC_IT_TS: Time Stamp interrupt
RTC_IT_WUT: WakeUp Timer interrupt
RTC_IT_ALRB: Alarm B interrupt
RTC_IT_ALRA: Alarm A interrupt
RTC_IT_TAMP1: Tamper 1 event interrupt

Return values

None

Definition at line 2701 of file stm32f4xx_rtc.c.

FlagStatus RTC_GetFlagStatus ( uint32_t RTC_FLAG )

Checks whether the specified RTC flag is set or not.

Parameters

RTC_FLAG

specifies the flag to check. This parameter can be one of the following values:

RTC_FLAG_RECALPF: RECALPF event flag.
RTC_FLAG_TAMP1F: Tamper 1 event flag
RTC_FLAG_TSOVF: Time Stamp OverFlow flag
RTC_FLAG_TSF: Time Stamp event flag
RTC_FLAG_WUTF: WakeUp Timer flag
RTC_FLAG_ALRBF: Alarm B flag
RTC_FLAG_ALRAF: Alarm A flag
RTC_FLAG_INITF: Initialization mode flag
RTC_FLAG_RSF: Registers Synchronized flag
RTC_FLAG_INITS: Registers Configured flag
RTC_FLAG_SHPF: Shift operation pending flag.
RTC_FLAG_WUTWF: WakeUp Timer Write flag
RTC_FLAG_ALRBWF: Alarm B Write flag
RTC_FLAG_ALRAWF: Alarm A write flag

Return values

The	new state of RTC_FLAG (SET or RESET).

Definition at line 2605 of file stm32f4xx_rtc.c.

ITStatus RTC_GetITStatus ( uint32_t RTC_IT )

Checks whether the specified RTC interrupt has occurred or not.

Parameters

RTC_IT

specifies the RTC interrupt source to check. This parameter can be one of the following values:

RTC_IT_TS: Time Stamp interrupt
RTC_IT_WUT: WakeUp Timer interrupt
RTC_IT_ALRB: Alarm B interrupt
RTC_IT_ALRA: Alarm A interrupt
RTC_IT_TAMP1: Tamper 1 event interrupt

Return values

The	new state of RTC_IT (SET or RESET).

Definition at line 2661 of file stm32f4xx_rtc.c.

void RTC_ITConfig	(	uint32_t	RTC_IT,
		FunctionalState	NewState
	)

Enables or disables the specified RTC interrupts.

Parameters

RTC_IT	specifies the RTC interrupt sources to be enabled or disabled. This parameter can be any combination of the following values: RTC_IT_TS: Time Stamp interrupt mask RTC_IT_WUT: WakeUp Timer interrupt mask RTC_IT_ALRB: Alarm B interrupt mask RTC_IT_ALRA: Alarm A interrupt mask RTC_IT_TAMP: Tamper event interrupt mask
NewState	new state of the specified RTC interrupts. This parameter can be: ENABLE or DISABLE.

Return values

None

Definition at line 2557 of file stm32f4xx_rtc.c.

Functions

Detailed Description

Function Documentation