class RTC – real time clock¶
The RTC is an independent clock that keeps track of the date and time.
rtc = machine.RTC() rtc.datetime((2020, 1, 21, 2, 10, 32, 36, 0)) print(rtc.datetime())
- class machine.RTC(id=0, ...)¶
Create an RTC object. See init for parameters of initialization.
Get or set the date and time of the RTC.
With no arguments, this method returns an 8-tuple with the current date and time. With 1 argument (being an 8-tuple) it sets the date and time.
The 8-tuple has the following format:
(year, month, day, weekday, hours, minutes, seconds, subseconds)
The meaning of the
subsecondsfield is hardware dependent.
Initialise the RTC. Datetime is a tuple of the form:
(year, month, day[, hour[, minute[, second[, microsecond[, tzinfo]]]]])
Get get the current datetime tuple.
Resets the RTC to the time of January 1, 2015 and starts running it again.
- RTC.alarm(id, time, *, repeat=False)¶
Set the RTC alarm. Time might be either a millisecond value to program the alarm to current time + time_in_ms in the future, or a datetimetuple. If the time passed is in milliseconds, repeat can be set to
Trueto make the alarm periodic.
Get the number of milliseconds left before the alarm expires.
Cancel a running alarm.
- RTC.irq(*, trigger, handler=None, wake=machine.IDLE)¶
Create an irq object triggered by a real time clock alarm.
handleris the function to be called when the callback is triggered.
wakespecifies the sleep mode from where this interrupt can wake up the system.
irq trigger source