Sub: Navigator: Gimbal controls missing channels 15 and 16.

[ES-Alexander]

Expected Behavior

Navigator autopilot servo output channels 15 and 16 should be assignable to camera gimbal controls, via the "Camera Setup" page.

Current Behavior

The "Camera Setup" page dropdowns only include channels 5 to 14 for assigning to gimbal functionalities.

Steps to Reproduce:

Please provide an unambiguous set of steps to reproduce the current behavior

1. Connect computer to Navigator autopilot
2. Open QGC
3. Go to "Camera Setup" page
4. Select "Output Channel" dropdown, and see that channels 15 and 16 are not available

System Information

When posting bug reports, include the following information

• Operating System: All
• QGC Version: 4.2.3
• QGC build: stable
• Flight Controller: Navigator (Linux)
• Autopilot (with version): ArduSub 4.1.0 (stable)

Detailed Description

The actual functionality works fine - e.g. if

• a servo is connected to channel 16, and
• the SERVO16_FUNCTION parameter is set to MountTilt, and
• the mount_tilt_* joystick button functionalities are activated

then the servo will move as expected. The issue is purely that valid options are missing from the dropdown menu(s) of the "Camera Setup" page. The "Lights" page correctly shows channels 15 and 16 as available.

Issue was raised in this forum post.

@Williangalvani I expect/hope this should be reasonably straightforward to fix? :-)

[Williangalvani]

this was done in #10261