https://devzone.nordicsemi.com/f/nordic-q-a/81877/low-power-with-spi-peripheral-zephyrI&#39;m trying to achieve a low power operation on a device which has a nRF52833 module with a SPI peripheral on Zephyr. It is based on the peripheral_lbs. The intended behaviour is for the device to be connectable but low power while not used and activeen-USTelligent Community 13Thu, 25 Nov 2021 07:23:51 GMThttps://devzone.nordicsemi.com/thread/340643?ContentTypeID=1Thu, 25 Nov 2021 07:23:51 GMT137ad170-7792-4731-bb38-c0d22fbe4515:1bb5fbac-6f66-4346-80ab-d4c41b72cc87Susheel Nuguru<p>I do not think you should call the power management callbacks directly from the applications, that is the reasons callbacksk to the PM policies like&nbsp;spim_nrfx_pm_control are static in nature so that they are not visible to your application.</p> <p>If you still want to do this via power management module, the best way is make sure that <a href="https://docs.zephyrproject.org/1.14.1/reference/kconfig/CONFIG_SYS_POWER_MANAGEMENT.html#cmdoption-arg-config-sys-power-management">CONFIG_SYS_POWER_MANAGEMENT</a>&nbsp;is enabled and use&nbsp;<strong><a href="https://docs.zephyrproject.org/latest/reference/pm/index.html?highlight=pm_device_state_set#c.pm_device_state_set">pm_device_state_set</a>&nbsp;</strong>so that power the callback you are intending to call can be triggered through power management module.</p><div style="clear:both;"></div>