https://devzone.nordicsemi.com/f/nordic-q-a/49893/how-do-i-know-what-configure-is-set-to-useHi i&#39;m first in BLE I use nRF52840 DK and SDK15.3.0 and SEGGER embeded when I excute single example(ble_app_blinky, ble_uart, timer), it has no problem. but when I merging the examples, it seems like I have to configure in sdk_configure.h Theen-USTelligent Community 13Wed, 24 Jul 2019 00:34:54 GMThttps://devzone.nordicsemi.com/thread/200168?ContentTypeID=1Wed, 24 Jul 2019 00:34:54 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ff6d8706-a675-4b6a-bd5f-d3b4f6edad5fswna3708<p>it&#39;s very helpful! thank you i need more study...</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/198953?ContentTypeID=1Wed, 17 Jul 2019 11:59:22 GMT137ad170-7792-4731-bb38-c0d22fbe4515:5edb9033-35ad-48d9-93dc-a218d15f4922tesc<p>Hi,</p> <p>If you have a look at what files are included in the project, you will typically see what categories of configurations are needed. E.g. a project including nrfx_uart.c uses UART, and so settings related to UART are relevant.</p> <p>If you go through the sdk_config.h for an example you will also see what is enabled in that example, which is typically what is needed for the functionality in that example to work.</p> <p>Regards,<br />Terje</p><div style="clear:both;"></div>