RTC_Micros Class Reference

RTC using the internal micros() clock, has to be initialized before use. Unlike RTC_Millis, this can be tuned in order to compensate for the natural drift of the system clock. Note that now() has to be called more frequently than the micros() rollover period, which is approximately 71.6 minutes. More...

#include <RTClib.h>

Public Member Functions
void	begin (const DateTime &dt)
	Start the RTC. More...
void	adjust (const DateTime &dt)
	Set the current date/time of the RTC_Micros clock. More...
void	adjustDrift (int ppm)
	Adjust the RTC_Micros clock to compensate for system clock drift. More...
DateTime	now ()
	Get the current date/time from the RTC_Micros clock. More...

Protected Attributes
uint32_t	microsPerSecond = 1000000
uint32_t	lastUnix
uint32_t	lastMicros

Detailed Description

RTC using the internal micros() clock, has to be initialized before use. Unlike RTC_Millis, this can be tuned in order to compensate for the natural drift of the system clock. Note that now() has to be called more frequently than the micros() rollover period, which is approximately 71.6 minutes.

Member Function Documentation

begin()

void RTC_Micros::begin ( const DateTime &  dt )

inline

Start the RTC.

Parameters

dt	DateTime object with the date/time to set

adjust()

void RTC_Micros::adjust

(

const DateTime &

dt

)

Set the current date/time of the RTC_Micros clock.

Parameters

dt	DateTime object with the desired date and time

adjustDrift()

void RTC_Micros::adjustDrift

(

int

ppm

)

Adjust the RTC_Micros clock to compensate for system clock drift.

Parameters

ppm	Adjustment to make. A positive adjustment makes the clock faster.

now()

DateTime RTC_Micros::now

(

)

Get the current date/time from the RTC_Micros clock.

Returns

DateTime object containing the current date/time

Member Data Documentation

microsPerSecond

uint32_t RTC_Micros::microsPerSecond = 1000000

protected

Number of microseconds reported by micros() per "true" (calibrated) second.

lastUnix

uint32_t RTC_Micros::lastUnix

protected

Unix time from the previous call to now().

The timing logic is identical to RTC_Millis.

lastMicros

uint32_t RTC_Micros::lastMicros

protected

micros() value corresponding to lastUnix.

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The documentation for this class was generated from the following files:

• src/RTClib.h
• src/RTC_Micros.cpp