embedded-firmware-dev SKILL.md skillA
embedded-firmware-dev from amethystluna/embedded-workbench is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add amethystluna/embedded-workbench/embedded-firmware-dev@git:20260626.c525f3fPins git:20260626.c525f3f in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- amethystluna/embedded-workbench
- Path
skills/embedded-firmware-dev/SKILL.md- Versions recorded
- 4
- Latest version
- git:20260626.c525f3f, committed Jun 26, 2026
- First version recorded
- Jun 22, 2026
- Size
- 7,927 bytes
- Repository stars
- 32
- License
- MIT
Use when writing or reviewing embedded C firmware, FreeRTOS tasks, ISR handlers, NVM/flash storage, or sensor driver state machines. NOT for documentation-only RTOS references, conceptual RTOS discussions, or bare-metal projects without an RTOS or sensor subsystem.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
<HARD-GATE>
This is a domain implementation skill. If you are planning, designing, or entering plan mode — load `Skill("embedded-workbench")` first to activate the workflow gates (Plan Verification Gate, Approval Gate, Closure Gate). Domain skills carry implementation guidance, not workflow enforcement.
</HARD-GATE>
# Embedded Firmware Development
## FreeRTOS
- Give each task a clear ownership boundary. Shared resources need a deliberate synchronization strategy.
- Prefer task notifications for one-to-one wakeups, queues for data transfer, event groups for combined state, mutexes for mutual exclusion, semaphores for one-way signaling.
- Use a mutex (not binary semaphore) when mutual exclusion matters and priority inheritance is needed.
- Make every blocking wait explicit: use a timeout unless an infinite wait is deliberate.
- Keep timer callbacks short and non-blocking — use them to schedule work, not do it.
- Avoid holding locks across flash, storage, or long operations.
- Size task stacks from worst-case call chains. Recheck high-water marks after adding buffers or deeper call trees.
- Use ISR-safe APIs for interrupt-to-task handoff. Keep ISR state capture minimal.
…Read the whole file at its exact version.
How to install
mdr add amethystluna/embedded-workbench/embedded-firmware-dev@sha256:e8525da92a59b8abThe line at the top of this page pins the label git:20260626.c525f3f, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_e3otcwsokykwfpqp)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 4 versions of this file, between Jun 22, 2026 and Jun 26, 2026, about one every day.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260626.c525f3f latest | 2026-06-26 | c525f3f | 7,927 B | A | view · diff |
| git:20260625.3b638fd | 2026-06-25 | 3b638fd | 7,606 B | A | view · diff |
| git:20260625.b058c1c | 2026-06-25 | b058c1c | 7,473 B | A | view · diff |
| git:20260622.0ec72ae | 2026-06-22 | 0ec72ae | 5,435 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (7927 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
amethystluna/embedded-workbench · 32 stars · license MIT · pushed 2026-11-06 · branch master
API
GET https://markdownregistry.com/api/v1/artifacts/art_e3otcwsokykwfpqp GET https://markdownregistry.com/api/v1/resolve?ref=amethystluna/embedded-workbench/embedded-firmware-dev GET https://markdownregistry.com/api/v1/blob/e8525da92a59b8ab24df2d14a0f3d1e9150388aa0f43b45e9ce42798ef0e91e0
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.