Wake up esp32 each 2 or 3 hours

[GeralDennis]

Hi, the alarm allows esp32 wake up each 2 or 3 hours?
I was trying to wake up esp32 every two hours using this line "ds.ALARM(ds.Day(), (ds.Hour() + 2)%24, 46, DS3231.PER_HOUR)" but the esp32 keeps waking up every hour.
Can you help how to do it?
Thank you in advance.

[shaoziyang]

In fact, ds3231 has hourly alarm mode, but it does not support alarm every few hours. So you may set it alarm next two hour before esp32 sleep, just like ds.ALARM(ds.Day(), (ds.Hour() + 2)%24, 46, DS3231.PER_DAY).