https://devzone.nordicsemi.com/f/nordic-q-a/28342/what-s-difference-for-nrf52hf_xx-and-nrf52nf_xxHi Sir, I&#39;m using nRF52832 + SDK 14.2 for building the OTA DFU function. As checking the folder &quot;../external/micro-ecc/&quot;, for nRF52 family, I found there two difference sub-folder , one is &quot;nrf52nf_xx&quot; and another is &quot;nrf52hf_xx&quot;. I tried toen-USTelligent Community 13Fri, 03 Apr 2020 08:39:49 GMThttps://devzone.nordicsemi.com/thread/243325?ContentTypeID=1Fri, 03 Apr 2020 08:39:49 GMT137ad170-7792-4731-bb38-c0d22fbe4515:7213b4d9-0816-4ba0-9558-e703eaee4f92Andrea Morselli<p><span>Hi RK, Thanks for the answer</span></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/111876?ContentTypeID=1Fri, 15 Dec 2017 02:56:19 GMT137ad170-7792-4731-bb38-c0d22fbe4515:c93e169b-dcc4-4217-8d78-08c6ff5d1de8Hsu<p>Hi RK, Thanks for the answer</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/111875?ContentTypeID=1Thu, 14 Dec 2017 09:42:51 GMT137ad170-7792-4731-bb38-c0d22fbe4515:779aca14-2122-4241-94cc-3254131cf78bRK<p>well if you read the release notes as you&#39;re urged to do when you download you&#39;ll see a note about micro-ecc having both a hard float and soft float build option for the chips which have a hard float and those which don&#39;t.</p> <p>So from there it&#39;s an easy guess one of the &#39;hf&#39; and &#39;nf&#39; is one and one is the other although it&#39;s a bit cryptic. You want the hf one as you have a hardware floating poitn unit.</p><div style="clear:both;"></div>