https://devzone.nordicsemi.com/f/nordic-q-a/128771/suspending-uart-with-zephyr-consoleNCS 3.02 54L10 I am using uart0 in async mode for printk and user input (my own callback not zephyr CLI). I need to be able to put the uart into suspend after an inactivity timeout to reduce current consumption. Based on advice from ticket 344896en-USTelligent Community 13Wed, 22 Jul 2026 18:23:30 GMThttps://devzone.nordicsemi.com/thread/569366?ContentTypeID=1Wed, 22 Jul 2026 18:23:30 GMT137ad170-7792-4731-bb38-c0d22fbe4515:c219134c-0ac8-4cd5-a148-1f9cd1f119f3Amanda Hsieh<p>Sorry, I mean the&nbsp;<span>UART.&nbsp;</span></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/569359?ContentTypeID=1Wed, 22 Jul 2026 16:08:18 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ba7f81e5-dce4-4c0c-a048-1c52c8e65554Nick_RA<p>The device is active and advertising, shutting down the uart is independent to the state of the system.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/569358?ContentTypeID=1Wed, 22 Jul 2026 16:03:10 GMT137ad170-7792-4731-bb38-c0d22fbe4515:f0c5947b-cf34-4f67-a6b4-840f0dda9ea7Amanda Hsieh<p>Hi,&nbsp;</p> <p>Did you check whether the <span>UART</span> is active? Check out the example code in&nbsp;<a href="https://nrfconnectdocs.nordicsemi.com/ncs/latest/nrf/test_and_optimize/optimizing/power_general.html#put-the-external-flash-into-sleep-mode-in-inactivity-periods">https://nrfconnectdocs.nordicsemi.com/ncs/latest/nrf/test_and_optimize/optimizing/power_general.html#put-the-external-flash-into-sleep-mode-in-inactivity-periods</a>&nbsp;</p> <p>Regards,<br />Amanda H.</p><div style="clear:both;"></div>