This is a mbed example project with some modifications to make it run with Renode (support for the Renode platform is done in the following Renode fork more info here).
The target is the DISCO_F746NG board.
Move to the root folder of the repo and run the following comands:
$ mbed deploy
$ sudo chmod u+x fix_mbed.py
$ ./fix_mbed.py
$ mbed compile --target DISCO_F746NG
You will find the file: ./BUILD/DISCO_F746NG/GCC_ARM/mbed-os-renode-example.elf which you can use in the mbed file .resc on Renode
The example, runs the LTDC with a message, it also display a message over serial console, and toggles the LED1 (PORT_I_1)