[−][src]Struct stm32h7::stm32h743::rtc::shiftr::W
Value to write to the register
Methods
impl W
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pub unsafe fn bits(&mut self, bits: u32) -> &mut Self
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Writes raw bits to the register
pub fn subfs(&mut self) -> _SUBFSW
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Bits 0:14 - Subtract a fraction of a second These bits are write only and is always read as zero. Writing to this bit has no effect when a shift operation is pending (when SHPF=1, in RTC_ISR). The value which is written to SUBFS is added to the synchronous prescaler counter. Since this counter counts down, this operation effectively subtracts from (delays) the clock by: Delay (seconds) = SUBFS / (PREDIV_S + 1) A fraction of a second can effectively be added to the clock (advancing the clock) when the ADD1S function is used in conjunction with SUBFS, effectively advancing the clock by: Advance (seconds) = (1 - (SUBFS / (PREDIV_S + 1))). Note: Writing to SUBFS causes RSF to be cleared. Software can then wait until RSF=1 to be sure that the shadow registers have been updated with the shifted time.
pub fn add1s(&mut self) -> _ADD1SW
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Bit 31 - Add one second This bit is write only and is always read as zero. Writing to this bit has no effect when a shift operation is pending (when SHPF=1, in RTC_ISR). This function is intended to be used with SUBFS (see description below) in order to effectively add a fraction of a second to the clock in an atomic operation.
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