No mavros data from Arducopter 4.3

Hi Guys,

I am connecting a flight controller using Arducopter 4.3 to an onboard computer.

Now, i can obtain mavros/state messages, but nothing more. I read Requesting Data From The Autopilot at Data from AP to ROS — Dev documentation but find parameters like REQUEST_DATA_STREAM, SET_MESSAGE_INTERVAL do not exist in the parameters of Arducoper.

Could you guys know how to obtain other information like IMU with mavros?

Those are not parameters, those are mavlink messages.