Cannot write nRF24L01+ register

[gabbla]

Hi all,

I'm working on a board equipped with a nRF24L01+. It is PIC32 based and I'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 the CONFIG register

Meanwhile my SPI and API work, the chip seems to ignore my write. For debugging pourpose, the SPI is running at 100 kHz and there are ~56uS between each SPI session.

Am I missing something?

Thanks,

Gabriele

[run_ar]

Hi,

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.

[gabbla]

I reviewed my SPI settings and find out that my driver was setting the wrong CPOL.

Thanks