https://devzone.nordicsemi.com/f/nordic-q-a/120010/how-to-calculate-softdevice-usageI am attempting to increase the MTU size on s132 3.0.0 and need to increase the available SoftDevice RAM unproportionally. For every MTU byte I need to give dozens of bytes to the SD RAM. I am unable to find any documentation on how to calculateen-USTelligent Community 13Wed, 02 Apr 2025 02:50:15 GMThttps://devzone.nordicsemi.com/thread/530097?ContentTypeID=1Wed, 02 Apr 2025 02:50:15 GMT137ad170-7792-4731-bb38-c0d22fbe4515:cecc0e09-57a7-4621-84f2-832ac6decad1Daniel Dakhno<p>Hi,</p> <p></p> <p>thanks for the answer, although it is a bit unfortunate.</p> <p>As far as I understand, with the wrong flash configuration, the application will just not boot, so the SD will not help with that...</p> <p>Fortunately, the proper flash configuration can just be grabbed from the SDK examples.</p> <p></p> <p>Anyway, thanks again!</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/528398?ContentTypeID=1Fri, 21 Mar 2025 12:10:11 GMT137ad170-7792-4731-bb38-c0d22fbe4515:81b60976-13bb-4c3c-86f7-0a05d4e8cd89Simonr<p>Hi</p> <p>There isn&#39;t a good way of calculating this I&#39;m afraid, and generally the SoftDevice will report exactly how much it requires upon boot.</p> <p>That being said. I see that you use a very old version of the S132 SoftDevice, and for later nRF5 SDK versions, S140 or S113 and those are what&#39;s recommended on the nRF52840 if you&#39;re not working on the nRF Connect SDK.</p> <p>Best regards,</p> <p>Simon</p><div style="clear:both;"></div>