https://devzone.nordicsemi.com/f/nordic-q-a/83810/mcu-hangs-after-connecting-disconnecting-and-again-connectingHi, there I am using nrf52832 chip on a custom hardware and also using softdevice 132 to send data to an app. I need to send data from app to MCU and vice-versa and it is working fine but the problem is that after disconnecting if I again try toen-USTelligent Community 13Thu, 20 Jan 2022 07:30:07 GMThttps://devzone.nordicsemi.com/thread/348628?ContentTypeID=1Thu, 20 Jan 2022 07:30:07 GMT137ad170-7792-4731-bb38-c0d22fbe4515:e1e0e92f-34ab-42a9-b53e-c2d326a73fb5Einar Thorsrud<p>I see. There is nothing here that indicates why, though. Please elaborate and show what you have found during debugging. The CPU never just &quot;hangs&quot;, so there must be something going on. Is an error check hit, like I asked for before? Or is there a busy wait somewhere? Or something else? Only debugging will point in the direction you must look next.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/348615?ContentTypeID=1Thu, 20 Jan 2022 05:16:09 GMT137ad170-7792-4731-bb38-c0d22fbe4515:93bc1d48-2ed2-45d2-9222-f9ddd45ac9d4Rajbir Singh<p>Yes,it hangs during advertising start function</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/348503?ContentTypeID=1Wed, 19 Jan 2022 12:52:50 GMT137ad170-7792-4731-bb38-c0d22fbe4515:0448e4b2-f189-47ec-b44e-c857ab37123aEinar Thorsrud<p>Hi,</p> <p>There is normally no problem disconnecting and reconnecting an arbitrary number of times, nor should restarting to advertise be a problem. I think the next step should be to debug and see which state the application is in when you write it &quot;hangs&quot;. Is an APP_ERROR_CHECK hit, for instance (see <a href="https://devzone.nordicsemi.com/nordic/nordic-blog/b/blog/posts/an-introduction-to-error-handling-in-nrf5-projects">An introduction to error handling in nRF5 projects</a>)? What else do you find by debugging?</p><div style="clear:both;"></div>