https://devzone.nordicsemi.com/f/nordic-q-a/77308/change-pinmux-at-runtimeHi I am developing a Zephyr application on a nRF52840. Is it possible to runtime change pinmux. Eg. I have set rx/tx for an uart to p1.8, p1.9 and want them to be changed to p1.10, p1.11 at a later stage? (Is new to Zephyr and nRF) I have beenen-USTelligent Community 13Mon, 12 Jul 2021 06:10:11 GMThttps://devzone.nordicsemi.com/thread/319512?ContentTypeID=1Mon, 12 Jul 2021 06:10:11 GMT137ad170-7792-4731-bb38-c0d22fbe4515:a41ffdad-9f93-4b4d-a000-24bc59595f5bMorten Sabinsky<p>Hi H&aring;kon</p> <p></p> <p>Thanks it seems to work.&nbsp;</p> <p></p> <p>/Morten</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/319384?ContentTypeID=1Fri, 09 Jul 2021 12:53:32 GMT137ad170-7792-4731-bb38-c0d22fbe4515:bd4688dc-4694-41ba-9637-74d98cf7bc1aH&#229;kon Alseth<p>Hi Morten,</p> <p>&nbsp;</p> <p>Unfortunately, its not possible to change this run-time using the zephyr serial driver, but you can do this manually by writing to the NRF_UARTEx registers. This is how you shut down the peripheral:</p> <p><a href="https://devzone.nordicsemi.com/f/nordic-q-a/68599/zephyr-nrf52840-device-crashes-when-turning-off-uart-with-device_set_power_state-uart-device_pm_off_state-null-null/281533#281533">https://devzone.nordicsemi.com/f/nordic-q-a/68599/zephyr-nrf52840-device-crashes-when-turning-off-uart-with-device_set_power_state-uart-device_pm_off_state-null-null/281533#281533</a></p> <p>&nbsp;</p> <p>Enabling it (do note that .ENABLE is 8 for UART mode! <a href="https://infocenter.nordicsemi.com/topic/ps_nrf9160/uarte.html?cp=2_0_0_5_18_8_39#register.ENABLE">https://infocenter.nordicsemi.com/topic/ps_nrf9160/uarte.html?cp=2_0_0_5_18_8_39#register.ENABLE</a>) is basically starting the tasks that you stopped.</p> <p>&nbsp;</p> <p>Kind regards,</p> <p>Håkon</p> <p>&nbsp;</p><div style="clear:both;"></div>