Description

I would like to use ztimer with a periph_timer and a periph_rtt in a low power application. The application wakes up in a fixed interval. To save energy, I have to disable periph_timer when the board is sleeping. How do achieve this with ztimer?

My basic idea is to block the power state that puts the device into deep sleep if at least one XTIMER_USEC clock is running.

Does ztimer know, how many timers are currently running on a specific clock?

Would it be a good idea to extend ztimer_clock_t with callbacks that are called if the number of the clock's user changes from 0 to 1 or from 1 to 0?