https://devzone.nordicsemi.com/f/nordic-q-a/60533/nrf_mtx-h-no-such-file-or-directory-required-by-nrf_pwr_mgmt-hHello, I have included nrf_pwr_mgmt.h to the gpiote_pca10040 SES example to able to run &quot;nrf_pwr_mgmt_init();&quot; function. I have added nrf_pwr_mgmt.c file under the nRF_Libraries and this lines to the sdk_config file, but I still get nrf_mtx.h: Noen-USTelligent Community 13Thu, 23 Apr 2020 07:20:49 GMThttps://devzone.nordicsemi.com/thread/246157?ContentTypeID=1Thu, 23 Apr 2020 07:20:49 GMT137ad170-7792-4731-bb38-c0d22fbe4515:8f5bf913-773f-4fc2-999c-e636395914e3Amanda Hsieh<p>Hi,&nbsp;</p> [quote user=""]1-) How can i solve this specific problem ?&nbsp;[/quote] <p>Please see the&nbsp;<a title="Including header files" href="https://infocenter.nordicsemi.com/topic/ug_gsg_ses/UG/gsg/add_headers_ses.html?cp=1_1_2_7_5_1">Including header files</a>&nbsp;documentation.&nbsp;&nbsp;</p> <p>&nbsp;</p> [quote user=""]2-) How do you follow all these add/remove things, is there any automatic wizard to create all these projects?[/quote] <p>&nbsp;Please see this <a href="https://devzone.nordicsemi.com/f/nordic-q-a/27765/sdk_config-wizard-in-segger-ses">post</a>.&nbsp;</p> <p>-Amanda H.</p><div style="clear:both;"></div>