SimpleBGC , How can ı save pitch , roll data of camera?

Hi. I am using BaseCam SimpleBGC 32-bit controller 2 axis gimbal. I’m practice the wiki of ardupilot which is about gimbal wiring and configuration using Alexmos .

How can ı get pitch and roll of camera from gimbal by feedback port of pixhawk .

I am getting ( AHRS , GPS ,RC . Control: No )

image

Thank you .