How to use flir duo r on pixhawk2

Can I use the shutter trigger of a Flir duo R camera using pixhawk2 or RC directly using PWM signals?

There are 4 lines from the USB port of my Flir camera.

According to the manual, 4 lines are for mavlink.

I want to press the shutter of the camera with the remote controller somehow, regardless of mavlink or PWM.

How should this be set, and how do I connect the wires?