https://devzone.nordicsemi.com/f/nordic-q-a/72540/unable-to-set-gpio-p0-17-as-gpio-out-pinHi , I tried following steps to configure and toggle GPIO pins. I have also set CONFIG_GPIO=y i n your prj.conf file. ,referring to https://devzone.nordicsemi.com/f/nordic-q-a/44940/simple-gpio-example---nrf9160-dk-2 The Led1,2,3,4 will on/offen-USTelligent Community 13Wed, 10 Mar 2021 04:08:13 GMThttps://devzone.nordicsemi.com/thread/298878?ContentTypeID=1Wed, 10 Mar 2021 04:08:13 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b70b20bc-af5e-4202-b6f9-9849189db8efKhushi<p>Thank you so much for the fast reply.</p> <p><br />Yes I will change in .overlay file.<br /><br /></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/298790?ContentTypeID=1Tue, 09 Mar 2021 15:48:10 GMT137ad170-7792-4731-bb38-c0d22fbe4515:10528ef0-8c10-430c-bc1c-b255125dac05JONATHAN LL<p>P017 ,18 and 19 is often used for SPI3.<br /><br /><pre class="ui-code" data-mode="text">&amp;spi3 { compatible = &quot;nordic,nrf-spim&quot;; status = &quot;okay&quot;; sck-pin = &lt;19&gt;; mosi-pin = &lt;18&gt;; miso-pin = &lt;17&gt;; };</pre><br />In the&nbsp;nrf9160dk_nrf9160_common.dts file you can se that they are used.&nbsp;<br /><br />You can change this in&nbsp;a .overlay file. You dont have to change the dts file.&nbsp;<br /><br />Regards,<br />Jonathan</p><div style="clear:both;"></div>