https://test-devzone.nordicsemi.com/f/nordic-q-a/89009/content-in-autoconfig-hHi, Our customer is optimize the size of flash used of nRF5340. They are curious whether the definition in autoconfig.h are all used in the image? or some of them are redundant.en-USTelligent Community 13 Non-ProductionThu, 16 Jun 2022 07:13:32 GMThttps://test-devzone.nordicsemi.com/thread/372709?ContentTypeID=1Thu, 16 Jun 2022 07:13:32 GMT137ad170-7792-4731-bb38-c0d22fbe4515:c58c816b-bcfe-4de3-971f-06d9a88fe99fuser92402<p>Hi,</p> <p>Not all of it is&nbsp;necessarily used by the application. If there are features not used by the application you can disable them to save space. We have a guide for optimizing the memory footprint of an application, so I recommend following that to see how to optimize the size of flash:&nbsp;<a href="https://developer.nordicsemi.com/nRF_Connect_SDK/doc/2.0.0/nrf/app_memory.html">Memory footprint optimization</a>.</p> <p>Best regards,</p> <p>Marte</p><div style="clear:both;"></div>