Issues adapting the Radio Test sample to our custom hardware which is using the nRF52840 SoChttps://test-devzone.nordicsemi.com/f/nordic-q-a/88806/issues-adapting-the-radio-test-sample-to-our-custom-hardware-which-is-using-the-nrf52840-socCurrently I am trying to adapt the Radio Test example to function on our custom hardware which uses the nRF52840 SoC. We need the Radio Test firmware to give access to the certification engineers to have control over the radio and conduct the appropriateen-USTelligent Community 13 Non-ProductionSun, 12 Jun 2022 17:07:22 GMTRE: Issues adapting the Radio Test sample to our custom hardware which is using the nRF52840 SoChttps://test-devzone.nordicsemi.com/thread/371988?ContentTypeID=1Sun, 12 Jun 2022 17:07:22 GMT137ad170-7792-4731-bb38-c0d22fbe4515:38514879-da5e-4655-bae1-372ea23f0a48user115043<p>Hello,</p> <p>My bad I should have been more specific. We are using the high frequency crystal of the Laird BL654 module and do not have an external high frequency crystal on our board (or a low frequency one for that matter).</p> <p>Hope this helps!</p><div style="clear:both;"></div>RE: Issues adapting the Radio Test sample to our custom hardware which is using the nRF52840 SoChttps://test-devzone.nordicsemi.com/thread/371908?ContentTypeID=1Fri, 10 Jun 2022 12:54:54 GMT137ad170-7792-4731-bb38-c0d22fbe4515:2686d937-bdf2-4a21-8f1c-98fef5a40428user15146<p>Hi,</p> [quote user=""]The Radio Test example comes using UART and the external high frequency crystal oscillator which both have to be adapted to suite our hardware. This is why I set in the sdk_config.h file the NRFX_CLOCK_CONFIG_LF_SRC to 0,&nbsp;CLOCK_CONFIG_LF_SRC to 0, and&nbsp;CLOCK_CONFIG_LF_CAL_ENABLED 1 (to match the settings of our existing hardware).[/quote] <p>You have an external high frequency crystal on your board, right?</p><div style="clear:both;"></div>