Using telem2 to communicate with a custom hardware

I want to use a gimble which accepts control commands (Not MAVLink commands) on a serial port. Is there any way I can use Pixhawk’s Telem2 port to send these commands from GCS?
I am aware that I can get it done with PWM to serial conversion but I don’t want to use it.

What protocol does the gimbal use?
The gcs datalink is mavlink, so if you can’t use mavlink to start with you’d need a second datalink and separate gimbal control software on the ground. If you get that established, ArduPilot can bridge/pass through from one serial port to another, which may work for you.
It would probably be better to implement mavlink, or the alexmos/Storm32 protocol, on your gimbal though.