embedded-firmware-dev skillA
embedded-firmware-dev is agent-read markdown (skill) from amethystluna/embedded-workbench: 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..
Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns 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@git:20260626.c525f3fmdr add amethystluna/embedded-workbench/embedded-firmware-dev@sha256:e8525da92a59b8abPin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.
[](https://markdownregistry.com/a/art_e3otcwsokykwfpqp)
1 badge views in 30 days
Versions
| 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 · 12 stars · license MIT · pushed 2026-09-22 · 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 agent 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.