BM8563 wakeup from time

m5stack / M5EPD

M5Paper Arduino Library

MIT License

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Closed RobinsonLaw closed 1 year ago

RobinsonLaw commented 3 years ago

I have test the following cannot wakeup from specific time

    wakeuptime.hour = 10;
    wakeuptime.min = 34;
    wakeuptime.sec = 00;
    M5.shutdown(wakeuptime);

estshorter commented 3 years ago

A fix similar to this pull request may be helpful.

cat-in-136 commented 2 years ago

The following workaround works without changing the M5EPD library. Same as M5.RTC.setAlarmIRQ()

M5.shutdown(RTC_Date(-1, -1, -1, -1), wakeuptime);

Other notes:

Execute M5.RTC.begin() in advance
Pull the USB type-C cable from M5Paper, i.e, do not charge power.
Use M5.shutdown() (or M5.disableMainPower()), not deep sleep. See also: https://community.m5stack.com/topic/2892/m5paper-shutdown-deep-sleep-wakeup

Tinyu-Zhao commented 1 year ago

RTC wake-up timer can only be accurate to the day, hour and minute, but not to the second.