Board Pin and Button Mapping

I have an nRF5284-MDK and I am running the latest release of the arm gcc build tools (17.0.0). When I download and compile the blinky example using SoftDevice 140 the LED does not change state, also the button does not seem to work. I am using the PCA10056.h configuration. Do I need to create a custom board configuration or can you provide me with one?

Hi, yes.
A custom board configuration is needed. Here is the blinky example you can refer to: