https://devzone.nordicsemi.com/f/nordic-q-a/106294/the-dfu-smp-is-halt-fault-after-commissioning-to-matter-networkhi everyone, I met a problem when I implemented OTA DFU over BLE in the matter doorlock application with nrf52840 dk (nrf connect SDK 2.5.0) in case, my device is uncommissioned to the matter network, OTA works fine but after it joins the networken-USTelligent Community 13Mon, 04 Dec 2023 10:05:49 GMThttps://devzone.nordicsemi.com/thread/458693?ContentTypeID=1Mon, 04 Dec 2023 10:05:49 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b89922aa-45ed-402b-b48a-e8aade9ea6feSigurd Hellesvik<p>Hi,</p> <p>In general, maybe this could be useful for you:</p> <p><a href="https://github.com/nrfconnect/sdk-connectedhomeip/blob/master/examples/platform/nrfconnect/util/DFUOverSMP.cpp">https://github.com/nrfconnect/sdk-connectedhomeip/blob/master/examples/platform/nrfconnect/util/DFUOverSMP.cpp</a></p> [quote user="nguyentiem"]I find the reason : i config&nbsp;CONFIG_PM_DEVICE=y, so when chip suspend, it uninit QSPI. how to reinit QSPI when chip wake up ?[/quote] <p>For this specifically, see how the DFU over Matter wakes up the external flash:</p> <p><a href="https://github.com/nrfconnect/sdk-nrf/blob/bd234dd21c170b952d7e2531cfbc69ebb26c9e9b/samples/matter/common/src/ota_multi_image_processor_impl.cpp#L20C19-L20C19">https://github.com/nrfconnect/sdk-nrf/blob/bd234dd21c170b952d7e2531cfbc69ebb26c9e9b/samples/matter/common/src/ota_multi_image_processor_impl.cpp#L20C19-L20C19</a></p> <p>Regards,<br />Sigurd Hellesvik</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/458622?ContentTypeID=1Sun, 03 Dec 2023 15:30:55 GMT137ad170-7792-4731-bb38-c0d22fbe4515:7957695b-a96b-4943-80c3-46038405a4fdnguyentiem<p>I find the reason : i config&nbsp;CONFIG_PM_DEVICE=y, so when chip suspend, it uninit QSPI. how to reinit QSPI when chip wake up ?</p><div style="clear:both;"></div>