Hi Pepijn, Follow up on the Device Access messages > > Done. I committed the code and added the device access sub directory > to the main CMakeLists.txt. > Did you try to build it? It doesn't build for me... Seems you only added to code to the repo, without changing the include paths and link libraries. Please test and make sure committed code compiles. -- Met vriendelijke groet, Alexander Broekhuis -- Met vriendelijke groet, Alexander Broekhuis