nRF5340 Issue when using Dedicated High Speed SPI pins on SDK &gt; 1.5.1https://devzone.nordicsemi.com/f/nordic-q-a/85691/nrf5340-issue-when-using-dedicated-high-speed-spi-pins-on-sdk-1-5-1Board: nRF5340-DK Version: NRF5340_xxAA_ENGD SDK: 1.5.1, 1.6.1, etc I have a Bluetooth project that also has quite a high SPI bandwidth requirement, so hence I am using the dedicated high-speed spi pins, and the SPI4 interface. /* use the highen-USTelligent Community 13Fri, 11 Mar 2022 13:19:33 GMTRE: nRF5340 Issue when using Dedicated High Speed SPI pins on SDK > 1.5.1https://devzone.nordicsemi.com/thread/357672?ContentTypeID=1Fri, 11 Mar 2022 13:19:33 GMT137ad170-7792-4731-bb38-c0d22fbe4515:0065c19c-95bf-42d3-b209-a59d2cc30e82Sigurd Hellesvik<p>Hi</p> <p>These pin&nbsp; settings should ideally be set in the DeviceTree instead of hardcoded like that. It is being worked on, see <a href="https://github.com/zephyrproject-rtos/zephyr/pull/42576">https://github.com/zephyrproject-rtos/zephyr/pull/42576</a>.</p> <p>If both the Application Core and the Network Core tries to use the same pins at the same time, it may cause errors, and I guess this is what happened in your case.</p> <p>Did this answer your questions?</p> <p>Regards,<br />Sigurd Hellesvik</p><div style="clear:both;"></div>