Custom board header file and pin definitionshttps://devzone.nordicsemi.com/f/nordic-q-a/65083/custom-board-header-file-and-pin-definitionsHi everyone, I&#39;m new with nordic chips and for our project we use a custom board based on the famous nRF52840 mcu. I read a lot about SDK17 in the infocenter to find how to write my custom board file but I have still some questions. I&#39;m using the armen-USTelligent Community 13Fri, 11 Sep 2020 16:49:40 GMTRE: Custom board header file and pin definitionshttps://devzone.nordicsemi.com/thread/269217?ContentTypeID=1Fri, 11 Sep 2020 16:49:40 GMT137ad170-7792-4731-bb38-c0d22fbe4515:051f5272-a87b-487c-8390-6f23f2887a44hugo_98<p>Thank you for your reply !</p> <p>regards</p> <p>Hugo</p><div style="clear:both;"></div>RE: Custom board header file and pin definitionshttps://devzone.nordicsemi.com/thread/267759?ContentTypeID=1Thu, 03 Sep 2020 08:02:23 GMT137ad170-7792-4731-bb38-c0d22fbe4515:30a499ec-04e9-4518-b1ca-90a950086ce5Jared<p>Hi,</p> <ol> <li>The NRF_GPIO_PIN_MAP() is mostly used in the board file where the pin on PORT 0 has already been defined. This is to not redefine the pin on PORT 0 when you wanted to define the same pin number but on PORT X. You can use&nbsp;<span>NRF_GPIO_PIN_MAP() all the way if you find it confusing (which is understandable).&nbsp;</span></li> <li><span>Probably safest for later development to just have a dummy value.&nbsp;</span></li> </ol> <p><span>regards</span></p> <p><span>Jared</span></p><div style="clear:both;"></div>