PX4 : USB communication with px4 2.4.8

I’m a new user of PX4 product and I am really a beginner. I would like to know how can I make a communication between the PX4 2.4.8 and my computer to put a code on it?
I use the software Matla/simulink. Do you think that is possible to put a code inside the PX4 2.4.8 with this software?
I really thank you in advance for your answers.
F. Gouin

Simulink_Pixhawk_Support_v2.1.pdf (3,0 Mo)