https://devzone.nordicsemi.com/f/nordic-q-a/49739/lfclk-source-selectionHi, I am using nrf52832, in the ble_app_uart_c example, i want to use rc source as a lfclk, i changed the following parameters in the sdk_config.h: NRFX_CLOCK_CONFIG_LF_SRC=RC CLOCK_CONFIG_LF_SRC=RC NRF_SDH_CLOCK_LF_SRC=NRF_CLOCK_LF_SRC_RC en-USTelligent Community 13Mon, 15 Jul 2019 12:36:53 GMThttps://devzone.nordicsemi.com/thread/198463?ContentTypeID=1Mon, 15 Jul 2019 12:36:53 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b8564613-a671-4e5f-9429-1dbfb7bf9301J&#248;rgen Holmefjord<p>Hi,</p> <p>Please make sure you also configure the other parameters for the RC clock. Use the settings I have posted in <a href="https://devzone.nordicsemi.com/f/nordic-q-a/39655/programming-nrf52840-on-custom-board-with-the-ble_app_uart/153752#153752">this thread</a>.</p> <p>Best regards,<br />Jørgen</p><div style="clear:both;"></div>