nRF9160 DK I/O expander

[Francis S]

The nRF9160 DK has an I/O expander that can optionally be used to interface the LEDs, slide switches, and buttons.

https://infocenter.nordicsemi.com/index.jsp?topic=%2Fug_nrf91_dk%2FUG%2Fnrf91_DK%2Fintro.html&cp=2_0_4

Any sample code available on how to interface to the I/O expander. 

[helsing]

There was a new nRF Connect SDK tag, v1.5.0, released yesterday, with support for the I/O expander, PCAL6408A.

Please check out the updated documentation on Working with nRF9160 DK.

There has also been added functionality for selecting board revisions. The board revision feature must be enabled in order to make use of the I/O expander. Check out the description under Board Revisions.