https://devzone.nordicsemi.com/f/nordic-q-a/77205/occasional-hardfault-in-nrf51822Hi All, Setup: SoC: nRF51822 SDK: 11.0.0 Softdevice: S130 2.0.1 I am facing occasional HardFault and It is happening randomly. I need to test device few hours to generate it and still no guarantee it will generate. It seems it is stack overflowen-USTelligent Community 13Thu, 08 Jul 2021 12:12:29 GMThttps://devzone.nordicsemi.com/thread/319163?ContentTypeID=1Thu, 08 Jul 2021 12:12:29 GMT137ad170-7792-4731-bb38-c0d22fbe4515:2fd61236-4b1a-4bf7-a6dc-ca4a1ad5fff8khodidas<p>I found It :).</p> <p>Actually, my two function call each other indefinitely in certain situation which was making stack overflow.</p> <p></p> <p>Previous LR was 0x000253BB (4 byte before green box). So. I derived problem should be at that instruction. I investigated around that instruction and found a condition when&nbsp;<span>two function can call each other indefinitely.</span></p> <p><span></span></p> <p><span>Thanks,</span></p> <p><span>Tarun</span></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/319161?ContentTypeID=1Thu, 08 Jul 2021 12:08:19 GMT137ad170-7792-4731-bb38-c0d22fbe4515:c72c4bd6-933e-4eb0-a6ef-31c69e30ba39Susheel Nuguru<p>There is no easy way to debug a hardfault that takes variable time to reproduce. <a href="https://devzone.nordicsemi.com/f/nordic-q-a/27014/how-can-i-distinguish-the-reason-for-hardfault">This </a>thread discusses this topic well enough to give you some info on how to debug it. I hope it helps</p><div style="clear:both;"></div>