https://devzone.nordicsemi.com/f/nordic-q-a/83248/nrf9160-dc-i2c-communicationhello, I&#39;m trying to do some I2C communication with nrf 9160 dk. I&#39;m using Zephyr kernal and SEGGER SDK for program development. But when I compile the main.c file the result gives a error an in below noted. Rebuilding ‘main.c’ from project ‘app/libappen-USTelligent Community 13Mon, 03 Jan 2022 13:12:03 GMThttps://devzone.nordicsemi.com/thread/345673?ContentTypeID=1Mon, 03 Jan 2022 13:12:03 GMT137ad170-7792-4731-bb38-c0d22fbe4515:0e26c16b-b606-4e24-958a-fba84076bb10Sigurd<p>Hi,</p> <p>1) It&#39;s this file,&nbsp;<a href="https://github.com/nrfconnect/sdk-zephyr/blob/main/include/drivers/i2c.h">https://github.com/nrfconnect/sdk-zephyr/blob/main/include/drivers/i2c.h</a></p> <p>Try to add</p> <p><span>#</span><span>include</span><span> </span><span><span>&lt;</span>drivers/i2c.h<span>&gt;</span></span></p> <p><span><span>at top of your main.c file</span></span></p> <p><span><span>Also make sure you have&nbsp;</span></span></p> <p><span><span><span>CONFIG_I2C=y</span></span></span></p> <p><span><span><span>in prj.conf</span></span></span></p><div style="clear:both;"></div>