https://devzone.nordicsemi.com/f/nordic-q-a/95156/how-to-access-gpio-line-names-specified-in-overlayHi all. I&#39;m trying to learn a bit more about the device overlays, I&#39;d like to know how I would access the &quot;gpio-line-names&quot; that I&#39;ve specified in my overlay in my application. ie when I set or read the I/O point it would be nice to retrieve theen-USTelligent Community 13Sat, 24 Dec 2022 10:04:21 GMThttps://devzone.nordicsemi.com/thread/402127?ContentTypeID=1Sat, 24 Dec 2022 10:04:21 GMT137ad170-7792-4731-bb38-c0d22fbe4515:07a5e74b-e7dc-4818-8fe9-28b7212664b1Marshall<div> <div><span>You do it like this.</span></div> <div><span></span></div> <pre class="ui-code" data-mode="c_cpp">#define BASE_EXPANDER DT_NODELABEL(pca95xx_feather0) #if DT_NODE_HAS_STATUS(BASE_EXPANDER,okay) const struct device *const gpio_expander = DEVICE_DT_GET(BASE_EXPANDER); const char *useful_gpio_names[] = DT_PROP(BASE_EXPANDER,gpio_line_names); #else #error &quot;pca95xx_feather0 device is disabled.&quot; #endif</pre></div><div style="clear:both;"></div>