https://devzone.nordicsemi.com/f/nordic-q-a/90477/ncs-how-to-close-spi-i2c-adc-nvsHello, nRF5340, NCS1.9.99, VSCode adc_dev_ = device_get_binding(&quot;ADC_0&quot;); i2c_dev = device_get_binding(&quot;I2C_0&quot;); spi_dev = device_get_binding(&quot;SPI_3&quot;); rc = nvs_init(&amp;fs, flash_dev-&gt;name); how to close those devices beforeen-USTelligent Community 13Fri, 29 Jul 2022 14:28:41 GMThttps://devzone.nordicsemi.com/thread/379347?ContentTypeID=1Fri, 29 Jul 2022 14:28:41 GMT137ad170-7792-4731-bb38-c0d22fbe4515:8e9113f0-8c5e-4561-b0fa-75ae3999aadfMichal<p>Hello,<br /><br />You should be able to use the Power Management API for that.<br />Add add CONFIG_PM_DEVICE=y to your prj.conf and then you can use the following function to suspend and resume the devices.<br /><br /><pre class="ui-code" data-mode="c_cpp">pm_device_action_run(i2c_dev, PM_DEVICE_ACTION_SUSPEND); pm_device_action_run(i2c_dev, PM_DEVICE_ACTION_RESUME);</pre></p> <p>You can read more about it here<br /><a href="https://developer.nordicsemi.com/nRF_Connect_SDK/doc/2.0.2/zephyr/services/pm/device_runtime.html">https://developer.nordicsemi.com/nRF_Connect_SDK/doc/2.0.2/zephyr/services/pm/device_runtime.html</a><br /><br />And here is the API description:<br /><a href="https://developer.nordicsemi.com/nRF_Connect_SDK/doc/2.0.2/zephyr/services/pm/api/index.html#c.pm_device_action_run">https://developer.nordicsemi.com/nRF_Connect_SDK/doc/2.0.2/zephyr/services/pm/api/index.html#c.pm_device_action_run</a></p> <p></p> <p>Best regards,</p> <p>Michal</p><div style="clear:both;"></div>