https://devzone.nordicsemi.com/f/nordic-q-a/47743/cannot-write-nrf24l01-registerHi all, I&#39;m working on a board equipped with a nRF24L01+. It is PIC32 based and I&#39;m writing a mini driver for it. So far my SPI and API seems to work correctly: The 3 operation are: Read the CONFIG register Set PWR_UP bit Read back theen-USTelligent Community 13Wed, 11 Sep 2019 09:17:59 GMThttps://devzone.nordicsemi.com/thread/209116?ContentTypeID=1Wed, 11 Sep 2019 09:17:59 GMT137ad170-7792-4731-bb38-c0d22fbe4515:96f9da40-d2cf-40f9-a4c1-126ff779f7b9gabbla<p>I reviewed my SPI settings and find out that my driver was setting the wrong CPOL.</p> <p></p> <p>Thanks</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/196673?ContentTypeID=1Thu, 04 Jul 2019 21:46:45 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b08a363f-79f4-420e-9136-0bf987de530arun_ar<p>Hi,</p> <p>I assume you are following the spi spec of the product, a bit hard to see from the picture. Could upload the trace file? Unfortunately I do not have a pic32, but I guess you should review your spi settings first.</p><div style="clear:both;"></div>