https://devzone.nordicsemi.com/f/nordic-q-a/47451/trouble-migrating-uart-app-from-nrf52dk-to-nrf52810I have been developing a bluetooth application that extends the ble_app_uart example, in SDK v14.x.x, on the nRF52 DK. I&#39;ve been waiting for a custom built external board to arrive, which uses an nRF52810 chip. I can successfully program my external deviceen-USTelligent Community 13Mon, 20 May 2019 14:30:45 GMThttps://devzone.nordicsemi.com/thread/188001?ContentTypeID=1Mon, 20 May 2019 14:30:45 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d3c9f26b-c3e3-41d6-bb69-eb89388a9487J&#248;rgen Holmefjord<p>Try setting the <a href="https://devzone.nordicsemi.com/f/nordic-q-a/10729/my-device-is-freezing-and-restarting">DEBUG flag</a>, or <a href="https://www.youtube.com/watch?v=uP8RYgYGRvI">build in debug configuration</a>, the error should show in the debug terminal.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/187969?ContentTypeID=1Mon, 20 May 2019 13:39:42 GMT137ad170-7792-4731-bb38-c0d22fbe4515:a383a58c-6cb4-49ec-8186-e10131f28165Noah<p>I tried to pull the FIFO_ERROR_CODE out as a global to see it&#39;s value, but got &quot;0x00000000&quot;</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/187963?ContentTypeID=1Mon, 20 May 2019 13:34:56 GMT137ad170-7792-4731-bb38-c0d22fbe4515:227ff5bd-5aaf-4fe0-bc65-db7bc3a0cf85J&#248;rgen Holmefjord<p>Hi,</p> <p>It does not look like you get the error from app_timer_init, but from a UART interrupt. You should get an error code with the <em>APP_UART_FIFO_ERROR</em><span>&nbsp;event (see description of event&nbsp;in&nbsp;<a href="https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk5.v15.3.0/group__app__uart.html#ga9346b21b144fd9499e24853bbf781e17">app_uart_evt_type_t</a>&nbsp;documentation), can you check what this is?&nbsp;</span></p> <p><span>Best regards,<br />Jørgen</span></p><div style="clear:both;"></div>