https://devzone.nordicsemi.com/f/nordic-q-a/82377/nrf24l0-default-values-in-the-register-mapGood day, I am unable to read the default values in the register map. The values I get are not similar to the ones in the datasheet. I am assuming the SPI between the PIC18F4550 and the nRF24L0+ is working fine, as the Status register and the Configen-USTelligent Community 13Fri, 03 Dec 2021 13:16:26 GMThttps://devzone.nordicsemi.com/thread/341893?ContentTypeID=1Fri, 03 Dec 2021 13:16:26 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b364b9ab-671a-4961-a0d9-e169a8dbae83Kenneth<p>I suggest to get a logic analyzer trace and compare with the SPI timing (check for instance edges are correct):<br /><a href="https://infocenter.nordicsemi.com/pdf/nRF24L01P_PS_v1.0.pdf">https://infocenter.nordicsemi.com/pdf/nRF24L01P_PS_v1.0.pdf</a></p> <p>MOSI and MISO should only toggle on falling edge of CLK:<br /><img src="https://devzone.nordicsemi.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/4/pastedimage1638537382793v1.png" alt=" " /></p><div style="clear:both;"></div>