https://devzone.nordicsemi.com/f/nordic-q-a/64024/sample-mcp23s17-driverHello, I&#39;quiet new in Zephyr. So tell me if I&#39;m wrong. I would like to test driver mcp23s17 present on zephyr. I&#39;ve add in .overlay file And now I want to initialize my driver in main file I&#39;ve also add in prj.conf the DT_LABEL isen-USTelligent Community 13Mon, 28 Sep 2020 16:32:44 GMThttps://devzone.nordicsemi.com/thread/271863?ContentTypeID=1Mon, 28 Sep 2020 16:32:44 GMT137ad170-7792-4731-bb38-c0d22fbe4515:03ca0e15-c014-473f-935b-dc37177c70ectrug<p>Hi Thomas</p> <p>Can you help me with the mcp23s17 driver?</p> <p><a href="https://devzone.nordicsemi.com/f/nordic-q-a/66454/zephyr-customboard-with-nrf52840-and-mcp23s17">https://devzone.nordicsemi.com/f/nordic-q-a/66454/zephyr-customboard-with-nrf52840-and-mcp23s17</a></p> <p>I really don&#39;t know how to bind the device in the main.c</p> <p></p> <p>Regards</p> <p>Dominique</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/261197?ContentTypeID=1Wed, 22 Jul 2020 12:49:35 GMT137ad170-7792-4731-bb38-c0d22fbe4515:17dbc8e0-e6d5-419c-a239-3b22b2fe880cthomas oggier<p>I found the way:<br /><pre class="ui-code" data-mode="text">&amp;spi3 { label=&quot;SPI3&quot;; status = &quot;okay&quot;; sck-pin = &lt;2&gt;; mosi-pin = &lt;3&gt;; miso-pin = &lt;4&gt;; cs-gpios = &lt;&amp;gpio0 5 0&gt;; myspidevice: gpio@0 { label=&quot;mcp23s08&quot;; compatible=&quot;microchip,mcp23s17&quot;; gpio-controller; #gpio-cells = &lt;2&gt;; spi-max-frequency = &lt;800000&gt;; reg = &lt;0&gt;; ngpios = &lt;16&gt;; }; }; </pre></p> <p>the line 11 (compatible) is used to found the yaml file that we can found in zephyr/dts/bindings/gpio</p><div style="clear:both;"></div>