Arduino API

[tllim]

for rpi connector I think that is like raspberry pi, you can search on the web tutorial between, arduino and raspberry pi.
however for euler connector i don't know. otherwise There has  serial bus between arduino and the board.

But if we can a tutorial for use GPIO, it will be good.

We are currently design one Sheild Adapter board and has analog IO, the board will sit between Pi and Euler bus.