https://devzone.nordicsemi.com/f/nordic-q-a/22924/combining-examples-in-sdk13Hello, I have a problem while combining peripheral examples in SDK13. I am trying to combine twi_sensor and uart but when I do this in uart folder, compiler gives following error: &gt; Linking target: _build/nrf52832_xxaa.out &gt; _build/nrf52832_xxaa_mainen-USTelligent Community 13Tue, 20 Jun 2017 12:15:54 GMThttps://devzone.nordicsemi.com/thread/90171?ContentTypeID=1Tue, 20 Jun 2017 12:15:54 GMT137ad170-7792-4731-bb38-c0d22fbe4515:a36b5743-cb01-483d-92c0-aaf292f3bb29asabuncuoglu13<p>Yeah, in my case APP_UART_ENABLED was required to call app_uart_get and app_uart_init, when I added #define APP_UART_ENABLED 1 it worked perfectly!</p> <p>Thanks!!!</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/90170?ContentTypeID=1Tue, 20 Jun 2017 11:15:36 GMT137ad170-7792-4731-bb38-c0d22fbe4515:99b9120e-b7c4-44ed-baf1-6c018aa8c3e0Sigurd<p>Hi,</p> <p>You will also need to update the <code>sdk_config.h</code> to enable the modules you want to use. E.g. for the uart project, you will need to add #define TWI_ENABLED 1. The <code>sdk_config.h</code> is located in the folder <code>SDK_13_folder\examples\peripheral\twi_sensor\pca10040\blank\config</code></p><div style="clear:both;"></div>