NRF52840-QIAA-R

[Suraj11]

Hello, 

We are facing some problem in getting output in NRF52840-QIAA-R. In our project we used pins of port-0 as SPI interface as bellow:

1. P0.05/AIN3 pin as CS
2. P0.06 as SCLK
3. P0.07 pin as MISO and 
4. P0.08 pin as MOSI

Can we use these all port pins for SPI interface?

Please let me know if I can configure port pins as SPI interface or not?

Thank You.

[Jørgen Holmefjord]

Hi,

Yes, these pins can be used for SPI. Any GPIO can be used for SPI interface on the nRF52 series, but it is not recommended to use the pins that is marked "low frequency I/O only" in the pin assignment documentation. 

Please make sure that you disable/move UART peripheral/NRF_LOG to other pins, as the UART interface by default is connected to GPIOs P0.05-P0.08 on th DK.

Best regards,
Jørgen

[Jørgen Holmefjord]

Are you using the DK? Can you post the code used for configuring SPI? What "results" are you expecting and what are you actually seeing?