Control of serial telemetry thrusters

I have some thrusters that ere controlled via a serial RS485 connection and looking where in the code to insert the serial control code instead of using the PWM outputs for the ESC controllers.

I am building with BlueOS and the new navigator board which has the additional UART ports for the serial control that I am hoping I can use for this.

Is there somewhere I can read up on the workings of the Ardusub source code and how everything is put together and the process loop etc?

Poke around the GitHub, here. Hopefully that yields some results.

Thanks. I have the source and can build it so I will have a look at how to debug this and do some stepping through to find where stuff is.