class RTC -- real time clock¶
The RTC is and independent clock that keeps track of the date and time.
Example usage:
rtc = machine.RTC()
rtc.init((2014, 5, 1, 4, 13, 0, 0, 0))
print(rtc.now())
Constructors¶
-
class
machine.
RTC
(id=0, ...)¶ Create an RTC object. See init for parameters of initialization.
Methods¶
-
RTC.
init
(datetime)¶ Initialise the RTC. Datetime is a tuple of the form:
(year, month, day[, hour[, minute[, second[, microsecond[, tzinfo]]]]])
-
RTC.
now
()¶ Get get the current datetime tuple.
-
RTC.
deinit
()¶ 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
True
to make the alarm periodic.
-
RTC.
alarm_left
(alarm_id=0)¶ Get the number of milliseconds left before the alarm expires.
-
RTC.
cancel
(alarm_id=0)¶ Cancel a running alarm.
-
RTC.
irq
(*, trigger, handler=None, wake=machine.IDLE)¶ Create an irq object triggered by a real time clock alarm.
trigger
must beRTC.ALARM0
handler
is the function to be called when the callback is triggered.wake
specifies the sleep mode from where this interrupt can wake up the system.