RE: nrf9160dk SPI pins

Håkon Alseth — Thu, 15 Oct 2020 12:27:22 GMT

Hi,

[quote user=""]But I couldn't find correct pins to use for CS and SCK. Also I need 2 more pins for SPI slave interrupt and Reset control.[/quote]

CS is a generic GPIO. The SPIM module doesn't have a dedicated register to set the CS, as shown in the PSEL.* register:

The CS pin must be set as a normal GPIO and controlled by the application, but there are ways of setting this up in the zephyr drivers, like this:

You can have a look at the "spi_cs" in the test source code for this specific example.

The SPIx peripheral can be enabled by setting an overlay for your board (($BOARD).overlay):

The setup for nRF9160 is very similar to how its done in this case (which was for nRF5340):

Kind regards,

Håkon