https://devzone.nordicsemi.com/f/nordic-q-a/22275/ccm-module-resets-the-mcuI have written a simple implementation for using the ccm module with mesh. It encrypts and decrypts as it should but when enabled the processor makes a soft reset. It happens quiet often but not on every sent or received packet. In addition to the codeen-USTelligent Community 13Wed, 24 May 2017 11:59:12 GMThttps://devzone.nordicsemi.com/thread/87586?ContentTypeID=1Wed, 24 May 2017 11:59:12 GMT137ad170-7792-4731-bb38-c0d22fbe4515:92b8d94e-b07e-4fec-8b8b-9bb607d753b3Jwest<p>I found the problem. My packet_buffer was to small to fit the arbitrary length of received packets.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/87585?ContentTypeID=1Wed, 24 May 2017 09:00:30 GMT137ad170-7792-4731-bb38-c0d22fbe4515:49610744-ec05-4a24-b29f-5b76276d9f36Trond Einar Snekvik<p>What&#39;s the nature of your soft reset? is it a hardfault, a softdevice assert?</p> <p>The code that executes in radio.c is extremely sensitive to timing, and spending too much time in setup_event or other radio-related functions can make the Softdevice end your timeslot, and asserting. This will only happen when the code executes near the end of the timeslot, which could explain your inconsistent errors.</p><div style="clear:both;"></div>