ArduPilot/ardupilot

Copter: move RC_Channels_Copter::save_trim to Copter class

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#32279 opened on Feb 24, 2026

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CopterNon-Functional Changegood first issue

Description

Feature Request

As part of reviewing PR https://github.com/ArduPilot/ardupilot/pull/32233 @peterbarker and @rmackay9 both thought that it would be best if this was moved to the Copter class. The means the code itself should be moved from RC_Channel_Copter to Copter.cpp (I think)

This shouldn't be any change in behaviour but it should be at least lightly tested in SITL.

Contributor guide

Tech stack
cpp
Domain
backendtesting
Issue type
refactor
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
under 1 hour
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
C++ knowledgeArduPilot build environment setup
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
70
Research direction
Locate the save trim function in RC Channel Copter.cpp and move it to Copter.cpp. Review PR #32233 for context. Test the change using SITL simulation as suggested in the issue. No behavior change is expected.