Thank you for your reply, Tectu! Sure, ChibiOS is runs out of the box but I can't add ugfx to the project. As I understand, I need to do 2 things as written here: http://ugfx.org/get-ugfx/11-documentati ... fx-chibios Do I need to do something else? Do I need to add files to the project in Keil or they will be automatically included while compiling? I'm asking that because I have problem in compiling step, I'm getting this error: "..\main.c(16): error: #5: cannot open source input file "gfx.h": No such file or directory" How I can solve it? Thank you.