https://devzone.nordicsemi.com/f/nordic-q-a/77517/changing-board-header-fileHi I am using an example project written for pca_10040, I am trying to replace it with pca_10010. So far, I changed the &quot;Target Device&quot; in the project options and the &quot;Register Definition File&quot; But, the &quot;boards.h&quot; file always asserts the optionen-USTelligent Community 13Thu, 15 Jul 2021 18:55:18 GMThttps://devzone.nordicsemi.com/thread/320329?ContentTypeID=1Thu, 15 Jul 2021 18:55:18 GMT137ad170-7792-4731-bb38-c0d22fbe4515:4ec93424-6066-419a-a3c9-4b18e923afcbS.Gabran<p>thanks a lot. it worked</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/320247?ContentTypeID=1Thu, 15 Jul 2021 12:15:45 GMT137ad170-7792-4731-bb38-c0d22fbe4515:eaa106b8-8bb2-45ea-8f9e-95475c9a6ed9Heidi<p>Hi!</p> <p></p> <p>In SES, go to Project -&gt; Options -&gt; drop-down menu to the left of <em>Search Options</em> bar-&gt; Common -&gt; Preprocessor -&gt; Preprocessor Definitions. This is where BOARD_PCA10040 is defined.</p> <p></p> <p>So change that to BOARD_PCA10100 and that should fix it.</p> <p></p> <p>Best regards,</p> <p>Heidi</p><div style="clear:both;"></div>