https://devzone.nordicsemi.com/f/nordic-q-a/58522/hmc5883l-interfacing-with-nrf52840i have been trying to interface the imu sensor gy-80 with nrf52840dk but an error of on the reference main and the thumb set instructions no memory set errors are comming why?en-USTelligent Community 13Tue, 03 Mar 2020 11:48:24 GMThttps://devzone.nordicsemi.com/thread/237703?ContentTypeID=1Tue, 03 Mar 2020 11:48:24 GMT137ad170-7792-4731-bb38-c0d22fbe4515:dfae5b8c-4caa-4e8a-94f2-216b5e4f8367Karl Ylvisaker<p>Hi,<br /><br />Seeing that this is the same &#39;undefined reference to &quot;main&quot;&#39; error as you mention in the&nbsp;<a href="https://devzone.nordicsemi.com/f/nordic-q-a/58529/when-i-was-interfacing-with-adxl375-with-nrf52840-error">other ticket</a> you have opened, it looks to me that the root cause for this is the same.<br />My colleague will help you with this in the other ticket.<br /><br />Best regards,<br />Karl</p><div style="clear:both;"></div>