https://devzone.nordicsemi.com/f/nordic-q-a/33601/problems-with-uarte-on-nrf52832To reduce power consumption during sleep I have to completely disable the UARTE0. This is done before sleeping by : NRF_UARTE0-&gt;TASKS_STOPRX = 1; NRF_UARTE0-&gt;ENABLE = UARTE_ENABLE_ENABLE_Disabled &lt;&lt; UARTE_ENABLE_ENABLE_Pos; At this point, there isen-USTelligent Community 13Fri, 20 Apr 2018 12:37:20 GMThttps://devzone.nordicsemi.com/thread/129143?ContentTypeID=1Fri, 20 Apr 2018 12:37:20 GMT137ad170-7792-4731-bb38-c0d22fbe4515:f1ccd345-d51f-4777-9ff1-8fbfd54ed6a5H&#229;kon Alseth<p>Hi,</p> <p>&nbsp;</p> <p>Could you try waiting for the RXTO event before disabling, like described in the &quot;<a href="http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.nrf52832.ps.v1.1/uarte.html?cp=2_1_0_34_3#concept_uzb_p2m_wr">Reception</a>&quot; part of the PS and see if it works after wakeup?</p> <blockquote> <p>The STOPTX and STOPRX tasks may not be always needed (the peripheral might already be stopped), but if STOPTX and/or STOPRX is sent, software shall wait until the TXSTOPPED and/or RXTO event is received in response, before disabling the peripheral through the ENABLE register.</p> </blockquote> <p>&nbsp;</p> <p>Best regards,</p> <p>Håkon</p><div style="clear:both;"></div>