Including header files does not find the functions included in them

Including header files does not find the functions included in themhttps://devzone.nordicsemi.com/f/nordic-q-a/81542/including-header-files-does-not-find-the-functions-included-in-themI am currently writing code to read the battery voltage using the C language. I would like to include the header file "es_battery_voltage.h" and use the two functions "es_battery_voltage_get()" and "es_battery_voltage_init()". However, even though I haveen-USTelligent Community 13Tue, 09 Nov 2021 10:30:59 GMTRE: Including header files does not find the functions included in themhttps://devzone.nordicsemi.com/thread/338121?ContentTypeID=1Tue, 09 Nov 2021 10:30:59 GMT137ad170-7792-4731-bb38-c0d22fbe4515:5e8a61d1-08d1-44cb-b2c7-9eebdeb91ed6Jared<p>Hi,</p> <p>You also need to add the path and source file to the project. See <a href="https://www.youtube.com/watch?v=t-kh1EbesvI&ab_channel=NordicSemiconductor">this </a>if you're using SES.</p> <p>regards<br />Jared </p><div style="clear:both;"></div>