SITL ArduCopter connect to c_uart_interface

Hi everyone !

I’m trying to test my c_uart_interface code in sitl with arducopter.elf like it’s descripted in the sitl tuto1 and sitl tuto2 but I got problems to connect my code to the simulator.
I’ve tried : uart_name = (char*)“5760”; and uart_name = (char*)“14550”; but it doesn’t work.

Someone can explain me how to make the connection with each other ?

Thanks in advance