https://devzone.nordicsemi.com/f/nordic-q-a/119949/nrf52840-soc-nrf5-sdk-problemHi all, My team and I are evaluating some BLE modules available on the market. One of them is the UBLOX BMD-340, which contains the nRF52840-QIAA SoC. We are encountering some issues in getting the module to work. As a first step, I simply want toen-USTelligent Community 13Wed, 19 Mar 2025 16:04:17 GMThttps://devzone.nordicsemi.com/thread/528058?ContentTypeID=1Wed, 19 Mar 2025 16:04:17 GMT137ad170-7792-4731-bb38-c0d22fbe4515:77793cf1-778e-438c-b106-9092f97a5eb0GiorgioR<p data-start="65" data-end="156">I solved the problem and want to share the solution in case it might be useful to others.</p> <p data-start="158" data-end="386">In my case, the issue was the lack of a low-frequency clock (32.768 kHz). To fix this, I had to change the clock source in sdk_config.h from <code data-start="299" data-end="322">NRF_CLOCK_LF_SRC_XTAL</code> to <code data-start="326" data-end="350">NRF_CLOCK_LF_SRC_SYNTH</code>. This made the SDK work properly.</p> <p data-start="388" data-end="732">What seems strange to me, as I mentioned earlier, is that the SDK examples are designed specifically for the development kit. In my opinion, an SDK should primarily be developed for the SoC itself and remain hardware-agnostic. Of course, having additional implementations for specific development kits would still be valuable and appreciated.</p><div style="clear:both;"></div>