https://devzone.nordicsemi.com/f/nordic-q-a/25781/deadcode-in-flashI have a app that stores some calibration information in flash (1 page at 0x7F000) When I booted now I noticed it has replaced it with &quot;DEADCODE&quot; following some hex number, what is this?en-USTelligent Community 13Mon, 09 Oct 2017 08:00:32 GMThttps://devzone.nordicsemi.com/thread/101554?ContentTypeID=1Mon, 09 Oct 2017 08:00:32 GMT137ad170-7792-4731-bb38-c0d22fbe4515:4b3fb09f-fc2c-4b14-ad72-fbdeef3a2798emdi<p>Well, I am guessing your project uses the Peer Manager, which in turn uses fds to store data in the last three flash pages (0x7D000, 0x7E000, 0x7F000). Write to addresses below 7xD000 and you should be fine.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/101553?ContentTypeID=1Mon, 09 Oct 2017 07:49:49 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d2cb37c0-0306-4c52-bbb8-bab33721ff2ferltot<p>It is a bit inconvinient since it has replaced my calibration values, how do I do this right?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/101552?ContentTypeID=1Mon, 09 Oct 2017 07:46:43 GMT137ad170-7792-4731-bb38-c0d22fbe4515:782f18aa-5f9e-445d-be0e-ea4832c83b64emdi<p>Hi,</p> <p>it&#39;s a magic word used by the fds library to tag the flash pages it uses.</p> <p>Regards, emdi</p><div style="clear:both;"></div>