https://devzone.nordicsemi.com/f/nordic-q-a/74982/question-about-spi-communicationI am using SDK version 17.0.2. The example code uses SPI. The following changes have been made to the pin settings. Questions 1. Pin behavior is strange. Port Program Setup Pin Operation SS 28 28 clock 4 3 en-USTelligent Community 13Tue, 11 May 2021 08:07:28 GMThttps://devzone.nordicsemi.com/thread/309136?ContentTypeID=1Tue, 11 May 2021 08:07:28 GMT137ad170-7792-4731-bb38-c0d22fbe4515:a6c49631-044e-460e-81cb-9417931a2655odenwar<p>Has confirmed.<br />Thank you.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/309130?ContentTypeID=1Tue, 11 May 2021 07:56:59 GMT137ad170-7792-4731-bb38-c0d22fbe4515:98a7bb06-7956-4447-af48-b6c8b708186cH&#229;kon Alseth<p>Hi,</p> <p>&nbsp;</p> <p>If you connect MISO to MOSI, you can loop back the transmission. Then you shall receive the same thing as you send.</p> <p>You use the default setup for the SPIM communication, which is 4 MHz clock. Try setting your sample rate in Saleae to &gt;=8MHz.</p> <p>&nbsp;</p> <p>Kind regards,</p> <p>Håkon</p><div style="clear:both;"></div>