Serial gimbal does not work with Walksnail Gimbal firmware V3.2

[mmosca]

Current Behavior

INAV Serial Headtracker and/or Gimbal stop working after updating Gimbal FIrmware to V3.2 (or using new headtracker firmware on the goggles)

Steps to Reproduce

1. Update Gimbal to V3.2
2. Gimbal stops responding to INAV position commmands via UART or
3. Use release version of Goggles L firmware
4. INAV can't recognize head tracker input

Expected behavior

1. Update Gimbal to latest version
2. Gimbal responds to INAV position commands via UART or
3. Update Headtracker to latest version
4. INAV recognizes gimbal inputs

Suggested solution(s)

We are working with Caddx to restore compatibility.

Additional context

Feature was tested on gimbal firmware v3.0 and possibly an earlier version or the headtracker firmware. Caddx is working on updated firmware that will restore compatibility.