Nordic nRF52840-Dongle (PCA10059)
Every supported board has its directory here. Each of them contains three subdirectories:
The board directory contains Go packages that provide the interface to the peripherals available on the board such as buttons, LEDs, etc.
There is also an init package that imported configures the whole system for typical usage.
Usually you don't need to import it explicitly because any other package in the board directory imports init itself to ensure proper operation.
The doc directory may contain documentation, diagrams, photos and other useful resources.
The examples directory contains simple programs that demonstrate how to use the available Go packages to work with the board and various external peripherals connected to it.