https://devzone.nordicsemi.com/f/nordic-q-a/114742/nrf9160-tca6416Hi, I&#39;m stuck with setting up device tree section about the TCA6416 and the associated C code. the TCA6416 is connected to nrf9160 gpio P0.28 as interrupt active low. I want to set up pin 2 as output and pin 3 as input (specifically as an interrupten-USTelligent Community 13Tue, 17 Sep 2024 12:04:28 GMThttps://devzone.nordicsemi.com/thread/502752?ContentTypeID=1Tue, 17 Sep 2024 12:04:28 GMT137ad170-7792-4731-bb38-c0d22fbe4515:e718cae7-e9af-494c-ac9a-46db5659cab8&#216;yvind<p>That is correct, the drivers are missing. You will need to develop and provide your own device drivers. Have a <a href="https://docs.nordicsemi.com/bundle/ncs-2.7.0/page/zephyr/kernel/drivers/index.html">look at the Zephyr device driver model</a>&nbsp;and the available&nbsp;<span>TCA6424 drivers. You can possibly base the TCA6414 drivers on the TCA6424 drivers.&nbsp;</span></p> <p><span>Kind regards,<br />Øyvind</span></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/502741?ContentTypeID=1Tue, 17 Sep 2024 11:07:48 GMT137ad170-7792-4731-bb38-c0d22fbe4515:6b20a67e-02bc-4e7e-ad68-a79db0310525YLA<p>After checking the folder, I dont see&nbsp;</p> <p><span>zephyr\drivers\gpio\gpio_tca6416.c</span></p> <p><span></span></p> <p><span>How do I proceed ?</span></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/502614?ContentTypeID=1Mon, 16 Sep 2024 12:51:49 GMT137ad170-7792-4731-bb38-c0d22fbe4515:1cf65552-b529-4034-ab6f-1150459c6c92&#216;yvind<p>Hello,&nbsp;</p> <p>I&#39;m not aware of&nbsp;<span>TCA6416 and how that works. Do you have the TCA6416 drivers in the SDK? I.e. I see there are drivers for the TCA6424 (zephyr\drivers\gpio\gpio_tca6424a.c).</span></p> <p>Kind regards,<br />Øyvind</p><div style="clear:both;"></div>