Using BLE Nano2 with nRF5 SDK, soft device and JLinkhttps://devzone.nordicsemi.com/f/nordic-q-a/24527/using-ble-nano2-with-nrf5-sdk-soft-device-and-jlinkI made up a prototype board with BLE Nano2, connected via a JLink. I&#39;m using armgcc. JLink is needed to support RTT as I need the UART for another purpose. My board file is in this earlier post. devzone.nordicsemi.com/.../ I have used the configen-USTelligent Community 13Tue, 22 Aug 2017 11:11:38 GMTRE: Using BLE Nano2 with nRF5 SDK, soft device and JLinkhttps://devzone.nordicsemi.com/thread/96556?ContentTypeID=1Tue, 22 Aug 2017 11:11:38 GMT137ad170-7792-4731-bb38-c0d22fbe4515:391c69a6-260e-42f5-80f1-1f6b4c6c57bcpaul_tanner<p>Yes. I&#39;m using the supplied Makefile which drives the JLink using nrfjprog. Now I found something significant: the example works if I have a UART connected. Evidently something in the UART library causes problems if the RX and TX pins are open circuit. I verified this by patching the example so that calls to the UART library are replaced with calls to RTT. Now works as I had hoped. BTW. I&#39;m not sure why the above UART problem includes crashing the whole example.</p><div style="clear:both;"></div>RE: Using BLE Nano2 with nRF5 SDK, soft device and JLinkhttps://devzone.nordicsemi.com/thread/96557?ContentTypeID=1Tue, 22 Aug 2017 10:08:24 GMT137ad170-7792-4731-bb38-c0d22fbe4515:15735970-b84b-4a83-86ff-89aa6c1dbee0endnode<p>Yes, that sounds strange. Have you tried <code>nrfjprog</code> or nRFgo Studio? These tools are using SEGGER J-Link DLL so if they work SEGGER tools should as well.</p><div style="clear:both;"></div>RE: Using BLE Nano2 with nRF5 SDK, soft device and JLinkhttps://devzone.nordicsemi.com/thread/96555?ContentTypeID=1Tue, 22 Aug 2017 09:05:46 GMT137ad170-7792-4731-bb38-c0d22fbe4515:8564cf86-f082-4f58-93e4-57f13c712a51paul_tanner<p>OK (after correcting the Flash addresses above) I got the BLE Nano to work by concatenating the 2 hex files (with srec_cat) and using the MK-20 to load the resulting hex. This means I&#39;m still looking for some kind of a config error as there&#39;s no reason why the JLink could not do what the MK-20 does.</p><div style="clear:both;"></div>RE: Using BLE Nano2 with nRF5 SDK, soft device and JLinkhttps://devzone.nordicsemi.com/thread/96554?ContentTypeID=1Tue, 22 Aug 2017 06:24:02 GMT137ad170-7792-4731-bb38-c0d22fbe4515:0ab79f34-38de-434b-b695-33d95b2dbed2paul_tanner<p>SDK is 12.2 and soft device is s132. I recall that I <em>could</em> get it working by concatenating the 2 binaries and loading with (redbear) MK-20 (not Jlink). I&#39;ll try that again to verify.</p><div style="clear:both;"></div>RE: Using BLE Nano2 with nRF5 SDK, soft device and JLinkhttps://devzone.nordicsemi.com/thread/96553?ContentTypeID=1Mon, 21 Aug 2017 21:40:11 GMT137ad170-7792-4731-bb38-c0d22fbe4515:e56815d9-7126-4630-870d-8c5368df4130endnode<p>Like HF and LF clock sources are different on nRF52 DK and your board? Or power stage with DC/DC vs. LDO? These setting if used in SW can through SD API cause some hard fault (which by your or Nordic code can end up by SW reset). Other then that it should at least boot the same on both boards if chi version/revision is identical.</p><div style="clear:both;"></div>RE: Using BLE Nano2 with nRF5 SDK, soft device and JLinkhttps://devzone.nordicsemi.com/thread/96552?ContentTypeID=1Mon, 21 Aug 2017 20:28:06 GMT137ad170-7792-4731-bb38-c0d22fbe4515:4b32a319-f186-4714-890d-d24bf2255d3cMatt<p>Which sdk and which softdevice are you testing with?</p><div style="clear:both;"></div>