RTC

Functions
__STATIC_INLINE void	LL_RCC_SetRTCClockSource (uint32_t Source)
	Set RTC Clock Source. More...
__STATIC_INLINE uint32_t	LL_RCC_GetRTCClockSource (void)
	Get RTC Clock Source BDCR RTCSEL LL_RCC_GetRTCClockSource. More...
__STATIC_INLINE void	LL_RCC_EnableRTC (void)
	Enable RTC BDCR RTCEN LL_RCC_EnableRTC. More...
__STATIC_INLINE void	LL_RCC_DisableRTC (void)
	Disable RTC BDCR RTCEN LL_RCC_DisableRTC. More...
__STATIC_INLINE uint32_t	LL_RCC_IsEnabledRTC (void)
	Check if RTC has been enabled or not BDCR RTCEN LL_RCC_IsEnabledRTC. More...
__STATIC_INLINE void	LL_RCC_ForceBackupDomainReset (void)
	Force the Backup domain reset BDCR BDRST LL_RCC_ForceBackupDomainReset. More...
__STATIC_INLINE void	LL_RCC_ReleaseBackupDomainReset (void)
	Release the Backup domain reset BDCR BDRST LL_RCC_ReleaseBackupDomainReset. More...

Detailed Description

Function Documentation

LL_RCC_DisableRTC()

__STATIC_INLINE void LL_RCC_DisableRTC

(

void

)

Disable RTC BDCR RTCEN LL_RCC_DisableRTC.

Return values

None

Definition at line 3682 of file stm32l4xx_ll_rcc.h.

{
  CLEAR_BIT(RCC->BDCR, RCC_BDCR_RTCEN);
}

LL_RCC_EnableRTC()

__STATIC_INLINE void LL_RCC_EnableRTC

(

void

)

Enable RTC BDCR RTCEN LL_RCC_EnableRTC.

Return values

None

Definition at line 3672 of file stm32l4xx_ll_rcc.h.

{
  SET_BIT(RCC->BDCR, RCC_BDCR_RTCEN);
}

LL_RCC_ForceBackupDomainReset()

__STATIC_INLINE void LL_RCC_ForceBackupDomainReset

(

void

)

Force the Backup domain reset BDCR BDRST LL_RCC_ForceBackupDomainReset.

Return values

None

Definition at line 3702 of file stm32l4xx_ll_rcc.h.

{
  SET_BIT(RCC->BDCR, RCC_BDCR_BDRST);
}

LL_RCC_GetRTCClockSource()

__STATIC_INLINE uint32_t LL_RCC_GetRTCClockSource

(

void

)

Get RTC Clock Source BDCR RTCSEL LL_RCC_GetRTCClockSource.

Return values

Returned

value can be one of the following values: LL_RCC_RTC_CLKSOURCE_NONE LL_RCC_RTC_CLKSOURCE_LSE LL_RCC_RTC_CLKSOURCE_LSI LL_RCC_RTC_CLKSOURCE_HSE_DIV32

Definition at line 3662 of file stm32l4xx_ll_rcc.h.

{
  return (uint32_t)(READ_BIT(RCC->BDCR, RCC_BDCR_RTCSEL));
}

LL_RCC_IsEnabledRTC()

__STATIC_INLINE uint32_t LL_RCC_IsEnabledRTC

(

void

)

Check if RTC has been enabled or not BDCR RTCEN LL_RCC_IsEnabledRTC.

Return values

State

of bit (1 or 0).

Definition at line 3692 of file stm32l4xx_ll_rcc.h.

{
  return ((READ_BIT(RCC->BDCR, RCC_BDCR_RTCEN) == RCC_BDCR_RTCEN) ? 1UL : 0UL);
}

LL_RCC_ReleaseBackupDomainReset()

__STATIC_INLINE void LL_RCC_ReleaseBackupDomainReset

(

void

)

Release the Backup domain reset BDCR BDRST LL_RCC_ReleaseBackupDomainReset.

Return values

None

Definition at line 3712 of file stm32l4xx_ll_rcc.h.

{
  CLEAR_BIT(RCC->BDCR, RCC_BDCR_BDRST);
}

LL_RCC_SetRTCClockSource()

__STATIC_INLINE void LL_RCC_SetRTCClockSource

(

uint32_t

Source

)

Set RTC Clock Source.

Note

Once the RTC clock source has been selected, it cannot be changed anymore unless the Backup domain is reset, or unless a failure is detected on LSE (LSECSSD is set). The BDRST bit can be used to reset them. BDCR RTCSEL LL_RCC_SetRTCClockSource

Parameters

Source

This parameter can be one of the following values: LL_RCC_RTC_CLKSOURCE_NONE LL_RCC_RTC_CLKSOURCE_LSE LL_RCC_RTC_CLKSOURCE_LSI LL_RCC_RTC_CLKSOURCE_HSE_DIV32

Return values

None

Definition at line 3648 of file stm32l4xx_ll_rcc.h.

{
  MODIFY_REG(RCC->BDCR, RCC_BDCR_RTCSEL, Source);
}