https://devzone.nordicsemi.com/f/nordic-q-a/10477/system-freeze-at-first-ble-instructionI try to build a basic ble advertising program, I&#39;m using SDK9 and softdevice 110 hex coming with. but just by calling any ble instruction the system freeze(my led not longer blinking and blingking without any ble function all). my first procedure isen-USTelligent Community 13Wed, 25 Nov 2015 13:15:10 GMThttps://devzone.nordicsemi.com/thread/38923?ContentTypeID=1Wed, 25 Nov 2015 13:15:10 GMT137ad170-7792-4731-bb38-c0d22fbe4515:dc2f78b6-83fb-43a1-b0a7-c8cdff0d1149Einar Thorsrud<p>After the error has occurred, your code will probably be in the eternal loop in the end of the <code>app_error_handler()</code> from components\libraries\util\app_error.c. Using a debugger, you should be able to extract the file name (<code>m_p_file_name</code>), line number (<code>m_line_num</code>) and error code (<code>m_error_code</code>) in order to pinpoint the error more exactly.</p> <p>On additional question: are you using custom hardware or the DK? If you are using custom hardware, do you have a 32 kHz crystal? And if not, do your set the first parameter of <code>SOFTDEVICE_HANDLER_INIT()</code> accordingly?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/38925?ContentTypeID=1Wed, 25 Nov 2015 10:34:47 GMT137ad170-7792-4731-bb38-c0d22fbe4515:3843953e-65c5-4370-9658-acffbcb01166makouda<p>it&#39;s the first instruion in my main code, should I configure something before it???</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/38924?ContentTypeID=1Wed, 25 Nov 2015 09:44:57 GMT137ad170-7792-4731-bb38-c0d22fbe4515:4bf93e8d-a412-4735-bea2-5b68da11ad98RK<p>No it doesn&#39;t freeze. It goes somewhere and it&#39;s doing something. You are probably in an error handler. Hit break in a debugger and find out where you are and how you got there.</p><div style="clear:both;"></div>