https://devzone.nordicsemi.com/f/nordic-q-a/24355/why-does-the-hardfault-line_num-1436-rem-c-occurHello, dear Nordic employee, MCU: 51822QFACA1 The using SDK is : SDK 7.2.0 The using SD is : s110_nrf51822_7.3.0_softdevice There was one device (our product) runing into the hardfault state, and just only one device got the problem and otheren-USTelligent Community 13Wed, 16 Aug 2017 11:00:22 GMThttps://devzone.nordicsemi.com/thread/95909?ContentTypeID=1Wed, 16 Aug 2017 11:00:22 GMT137ad170-7792-4731-bb38-c0d22fbe4515:64bbbc63-65d2-4007-9aff-22b2cd87ab4frun_ar<p>Are you using the timeslot api? or do you disable/enable interrupts? This happens because the Radio Event Manager gets an unexpected event. So most likely something is wrong with timing. Note that if you halt the softdevice you will get an hardfault.</p><div style="clear:both;"></div>