https://devzone.nordicsemi.com/f/nordic-q-a/45026/could-you-help-me-why-this-memcpy-cause-hardfaultI added ams service to my project, and I tested with my iphone 7P, seems all goes well. But today I tested with my iphone 5S, sometimes the hardfault exception raise.en-USTelligent Community 13Tue, 19 Mar 2019 15:03:36 GMThttps://devzone.nordicsemi.com/thread/177117?ContentTypeID=1Tue, 19 Mar 2019 15:03:36 GMT137ad170-7792-4731-bb38-c0d22fbe4515:63aa24a0-e5ce-4433-a768-f9563375aabdVidar Berg<p>Hi,</p> <p>I think it would be interesting to&nbsp;compare the input arguments to memcpy when you get the hardfault and when it works.&nbsp;Maybe the size argument is too big, hence causing memcpy to overwrite data outside of&nbsp; &quot;remote_command_list&quot; variable</p><div style="clear:both;"></div>