Turning on or off a led from a PWM signal

Hello World,

I am new to this forum and beginner of arduino. I have a drone with a brain that has PWM auxilliary functions (http://erlerobotics.com/blog/erle-brain-3/). On one of these functions I would like to connect my Arduino DUE to turn on 1 led (to start). Can you help me ?

Thank you very much.

Etienne