Time tick or time slice API or sample code

Hi

    I use nRF7002-DK, SDK:V2.5.2, Zephyr driver, I need to calculate time tick, isn't system provide RTC time tick or to calculate time slice API or sample code for my application?I need every time slice to excute regular work, if have appropiate API or sample code, please provide, Thanks.

Best Regards

    Tina

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