https://devzone.nordicsemi.com/f/nordic-q-a/67983/basic-spi-setupHello, I am using a nrf52 DK in an educational context. For this reason, I am not using the SDK, but implement basic features on a lower level. I used the implementation in nrfx_spi.c from SDK17.0.2_d674dde as reference. Before I provide aen-USTelligent Community 13Wed, 04 Nov 2020 16:38:49 GMThttps://devzone.nordicsemi.com/thread/278502?ContentTypeID=1Wed, 04 Nov 2020 16:38:49 GMT137ad170-7792-4731-bb38-c0d22fbe4515:88a4a753-06e3-42c0-91db-2659123c4d43iwmbq<p>Thanks, that instantly resolved my issue.</p> <p>Now I have correct waveforms on SCK and MOSI.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/278500?ContentTypeID=1Wed, 04 Nov 2020 16:27:55 GMT137ad170-7792-4731-bb38-c0d22fbe4515:c704f125-ab71-44b1-a7fe-801d1c7d7a6eTurbo J<p>Wrong order of operations.</p> <p>SPI works as</p> <ol> <li>put byte in TX register</li> <li>wait for event and clear event register</li> <li>read RX byte</li> </ol><div style="clear:both;"></div>