https://devzone.nordicsemi.com/f/nordic-q-a/15720/nrf-8001-keep-sending-success-after-setupI&#39;m developing a new board with nRF8001, after reset i correctly get the DeviceStartedEvent 0x03 0x081 0x02 0x00, after that i go into setup mode sending the configuration package (template for BLE UART in Volatile Memory without modifications), whenen-USTelligent Community 13Tue, 13 Sep 2016 09:24:12 GMThttps://devzone.nordicsemi.com/thread/60004?ContentTypeID=1Tue, 13 Sep 2016 09:24:12 GMT137ad170-7792-4731-bb38-c0d22fbe4515:967247c4-7e03-4b81-8049-eb09766a7c92David Edwin<p>Can you explain what you mean by &quot;configuration to the blocked code&quot; ? I can explain if you can make it a bit clearer.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/60003?ContentTypeID=1Mon, 12 Sep 2016 19:22:01 GMT137ad170-7792-4731-bb38-c0d22fbe4515:4cc51386-5d7e-496b-b5a1-cb335a1de45eilde<p>Thanks for your reply, it was not a xtal issue, somehow later, i mistake the configuration to the blocked code and it stated to work, i don&#39;t know why non blocked configuration didn&#39;t work</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/60002?ContentTypeID=1Tue, 16 Aug 2016 11:15:23 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ec3d2069-6005-49f6-8aa7-1e2527fb2285David Edwin<p>This looks like a clock source issue. What are the clock sources that you have set for the 32KHz and the 16MHz in the nRF8001 Setup. Make sure that the 16MHz crystal is done correctly on the new board.</p> <p>A trace of the SPI transactions would also be good to debug this further.</p><div style="clear:both;"></div>