https://devzone.nordicsemi.com/f/nordic-q-a/104086/nrf52810-spi-cant-writeHello, I want to send data to an e paper using spi interface. When ı try to send command using spi0 on nrf52810 it did not work however when I try to do the same thing with nrf52840 it worked. I also checked the CS RST and DC pins they are workingen-USTelligent Community 13Mon, 25 Sep 2023 10:04:36 GMThttps://devzone.nordicsemi.com/thread/447426?ContentTypeID=1Mon, 25 Sep 2023 10:04:36 GMT137ad170-7792-4731-bb38-c0d22fbe4515:5d352700-298b-40d6-afaa-ecb98e9cb048Jared<p>Hi,</p> [quote user=""]<p>I want to send data to an e paper using spi interface. When ı try to send command using spi0 on nrf52810 it did not work however when I try to do the same thing with nrf52840 it worked.</p> <p>I also checked the CS RST and DC pins they are working correctly with the&nbsp;<span>EPD_2in13_V3_Init functions.</span></p>[/quote] <p>Do you see any activity on SCLK, MISO, and MOSI? Does CS toggle correctly?</p> <p>regards</p> <p>Jared&nbsp;</p><div style="clear:both;"></div>