sdk-changelog

Business

Use when generating a customer-facing CHANGELOG between two SDK release tags. Covers how to collect commits from the main repo and changed submodules, and how to format the result for external audiences (no commit IDs, no Jira tickets, no submodule details).

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SDK CHANGELOG Generator

Overview

Produce a clean, customer-facing CHANGELOG from a git tag range. The output is an overview for end users — no internal identifiers, no implementation noise.

Workflow

1. Collect main repo commits

git log --format="%H|%ad|%an|%s" --date=short <FROM_TAG>..HEAD

Filter out pure bookkeeping commits (chore: record submodules) — they carry no user-visible information.

2. Find changed submodules

# hashes at old tag
git ls-tree <FROM_TAG> --full-tree -r | grep "^160000" > /tmp/sub_old.txt
# hashes at HEAD
git ls-tree HEAD --full-tree -r | grep "^160000" > /tmp/sub_new.txt

Diff the two files to find submodules whose commit pointer changed.

3. Collect submodule commits

For each changed submodule (if checked out locally):

git -C <submodule_path> log --format="%H|%ad|%an|%s" --date=short <OLD_HASH>..<NEW_HASH>

4. Merge and categorize

Combine all commits (main repo + submodules), deduplicate by subject, then group into:

Category	Commit prefixes
New Features	`feat:`, `feat(*):`
Bug Fixes	`fix:`, `fix(*):`
Improvements	`chore:`, `refactor:`, perf/size wins
Documentation	`docs:` — omit unless relevant to users

Output Template

## [VERSION or Unreleased] — since vX.Y.Z (DATE_FROM → DATE_TO)

### New Features

- **[Chip/Component]**
  - One-line user-visible description
  - ...

- **[Another area]**
  - ...

### Bug Fixes

- **[Area]**
  - Fixed [symptom] in [context]
  - ...

### Improvements

- Reduced code size of ...
- Refactored ... for better maintainability

Rules for Customer-Facing Output

Remove	Keep
Commit hashes	Chip/platform names (BL616, BL618DG…)
Jira / internal ticket IDs	Feature names and affected peripherals
Submodule paths	User-visible behavior changes
Author names	Security hardening (summarized)
`chore: record submodules` entries	Size/performance improvements
Internal code symbols

Group by functional area, not by submodule or file
Use plain language; avoid C macro names and file paths
One bullet = one user-visible change (merge duplicates across submodules)
Omit doc fixes unless they correct wrong behavior described in docs

Quick Example

Given commits like:

feat: add timeout interrupt for 616CL
fix(lp): fix miss lp restore keyram for sec 256   # also in macsw submodule
fix: harden DHCP packet bounds checks             # in wlan/linux_driver submodule

Output:

### New Features
- **BL616CL**: Added timeout interrupt support

### Bug Fixes
- **Low Power**: Fixed missing LP keyram restore for SEC 256 configuration
- **WiFi**: Hardened DHCP packet bounds checks

Note: the LP fix appears in both main repo and macsw submodule — output it once.