@jop said in M5Paper Shutdown() / Deep Sleep / Wakeup:
overload-2 int shutdown( int seconds );
The timer function of the BM8563* is based on a 8 bit counter which can be set to be controlled by a clock frequency of 4096, 64, 1 or 1/60 Hz. This means it can timeout with following max interval @ resolution:
62,3 ms @ 244,1 µs
4 s @ 15,5 ms
255 s @ 1 s
15300 s (255 min) @ 60 s (1 min)
so intervals above 255 seconds (4 min and 25 seconds) needs to be timed at one minute resolution.
I have however tested this on my CoreINK (UiFlow/mocropython) and found that it rounds down in intervals of 2 minutes (120 s) for some reason.
I made a script to that just put the unit to sleep but increases the sleep interval with 10 sec every time and then uses the clock to measure the actual sleep time. This was the result:
0_1683278473886_4835f713-9fcf-4986-a3f7-f9f9ca8e3512-image.png
*) BM8563 datasheet
