[SAMR21 New Gameplay] 33. RTC

dcexpert

[SAMR21 New Gameplay] 33. RTC [Copy link]

 

CircuitPython supports RTC function. The use of RTC is very simple, the basic usage is as follows:

import rtc
r = rtc.RTC()
r.datetime

The return value of datetime is a struct_time class, such as:

struct_time(tm_year=2000, tm_mon=1, tm_mday=1, tm_hour=0, tm_min=17, tm_sec=53, tm_wday=5, tm_yday=1, tm_isdst=-1)

If you need to change the time of rtc, just assign a value to datetime. The parameter type is also struct_time, such as:

r.datetime = time.struct_time((2019,10,17,22,00,00,4,1,-1))

This content is originally created by dcexpert , a user of EEWORLD forum. If you want to reprint or use it for commercial purposes, you must obtain the author's consent and indicate the source

dcexpert

Compared to MicroPython, CircuitPython currently has fewer RTC functions and does not support RTC callback functions, so it cannot wake up from sleep via RTC. In addition, it should be noted that the time formats of the two are also different.