https://devzone.nordicsemi.com/f/nordic-q-a/76258/spi-clock-vs-data-timing-issuesI would like to create SPI clock timings using the following documents. https://infocenter.nordicsemi.com/index.jsp?topic=%2Fps_nrf52840%2Fspim.html&amp;anchor=topic 1. CSN pin moves from High -&gt; Low 2. Data Set 3. Data recognition when clock data is moveden-USTelligent Community 13Tue, 15 Jun 2021 21:35:59 GMThttps://devzone.nordicsemi.com/thread/315488?ContentTypeID=1Tue, 15 Jun 2021 21:35:59 GMT137ad170-7792-4731-bb38-c0d22fbe4515:55ddcc49-6d24-45da-9694-346a9c233825Sigurd<p>Hi,</p> [quote user=""]When the clock goes up, the data goes up at the same time.[/quote] <p>I tested the code you attached on a nRF52840-DK</p> <p><img src="https://devzone.nordicsemi.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/4/pastedimage1623792744112v1.png" alt=" " /></p> <p>I&#39;m not able to reproduce&nbsp;what you are describing. From what I can see, MOSI changes when the clock goes low.</p> <p></p> <p>&nbsp;</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/314806?ContentTypeID=1Fri, 11 Jun 2021 01:50:29 GMT137ad170-7792-4731-bb38-c0d22fbe4515:39ee7fc5-53fc-471d-bdee-84833cfea22dodenwar<p><pre class="ui-code" data-mode="text">#define NRF_DRV_SPI_DEFAULT_CONFIG \ { \ .sck_pin = NRF_DRV_SPI_PIN_NOT_USED, \ .mosi_pin = NRF_DRV_SPI_PIN_NOT_USED, \ .miso_pin = NRF_DRV_SPI_PIN_NOT_USED, \ .ss_pin = NRF_DRV_SPI_PIN_NOT_USED, \ .irq_priority = SPI_DEFAULT_CONFIG_IRQ_PRIORITY, \ .orc = 0xFF, \ .frequency = NRF_DRV_SPI_FREQ_1M, \ .mode = NRF_DRV_SPI_MODE_0, \ .bit_order = NRF_DRV_SPI_BIT_ORDER_MSB_FIRST, \ }</pre></p> <p>Operation was confirmed by changing the following source code.</p><div style="clear:both;"></div>