https://devzone.nordicsemi.com/f/nordic-q-a/69637/nrf52840dk-as-spi-slave-only-receives-while-miso-is-highHi I am currently using nrf52840dk with zephyr, and SPI used to work fine. Now, as a slave, the kit only reads the data read while MISO is high (this might be what&#39;s supposed to happen), but the length of how long MISO stays up, varies. Exampleen-USTelligent Community 13Fri, 18 Dec 2020 09:30:09 GMThttps://devzone.nordicsemi.com/thread/285774?ContentTypeID=1Fri, 18 Dec 2020 09:30:09 GMT137ad170-7792-4731-bb38-c0d22fbe4515:c2fec6d3-bc2c-4c64-9152-43291bb84cf4Susheel Nuguru<p>I think it depends on how you are driving MISO and MOSI.</p> <p>Could you post your pin configurations on both ends so that others can get more context to help you.</p><div style="clear:both;"></div>