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Zigbee power consumption with Thread and Zigbee SDK 4.2.0

Cheb

HI,

I recently migrated my nrf52840 based devices to Thread and Zigbee SDK 4.2.0

I used to have a good power consumption around 100-150uA with zigbee enabled.

Since SDK migration I'm seeing high power consumption when zigbee is active (device is paired). If my device isn't paired power consumption is very low. (< 100uA)

Are there any changes relative to low-power management with this new SDK that I should be aware off ?

If that can be of any help here is a screenshot of the power profiling.

Thanks,

Sebastien

  • 0 in reply to Edvin

    Hi Edvin,

    It seems the main differences are the calls to zb_osif_sleep(zb_uint32_t sleep_tmo) which I monitor.

    With SDK 4.1.0 ZBOSS stack used to call it for 3 seconds periods and only wake-up briefly in between.

    Now the the sleep duration is most of the time smaller < 1sec and there is a lot of activity before calling sleep again.

    And my application doesn't reset btw.

    Regards,

    Sebastien

  • 0 in reply to Cheb

    Hi,

    I finally found what was causing the issue.

    My application main loop was calling nrf_pwr_mgmt_run(); without taking care of zboss stack.

    That was fine on 4.1.0 but on 4.2.0 I had to implement a cleaner handling:

    • get sleep notification from zboss stack and duration
    • only call nrf_pwr_mgmt_run() during the provided duration

    Thx for your support,

    Sebastien

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