communication-buses SKILL.md skillA
communication-buses from hermeticormus/libreembed-claude-code is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add hermeticormus/libreembed-claude-code/communication-buses@git:20260930.ba05790Pins git:20260930.ba05790 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- hermeticormus/libreembed-claude-code
- Path
plugins/communication-buses/skills/communication-buses/SKILL.md- Versions recorded
- 3
- Latest version
- git:20260930.327a46d, committed Sep 30, 2026
- First version recorded
- Sep 30, 2026
- Size
- 14,501 bytes
- Repository stars
- 51
- License
- MIT
Bus reference for I2C, SPI, UART, CAN, and USB: addressing, pull-up sizing, bus recovery, SPI mode card, DMA cache rules, ring buffers, CAN bit timing and error states, USB descriptors, and STM32 HAL code for each bus. Use when writing or reviewing a bus driver or diagnosing a misbehaving bus.
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
# Communication buses pattern library Reference patterns for I2C, SPI, UART, CAN, and USB driver development. Use as a lookup when designing or reviewing drivers. ## I2C reference ### Address resolution | Address space | Bits | Range | |---|---|---| | 7-bit | bits 7..1 | 0x08–0x77 (0x00-0x07 and 0x78-0x7F reserved) | | 10-bit | bits 9..0 | 0x000–0x3FF | Format on the wire (7-bit): ``` S | 7-bit addr | R/W | A | ... | P ``` The R/W bit is bit 0. Many HALs accept the address pre-shifted (`address << 1`); some accept it raw. Confirm against the HAL docs — common bug source. ### Pull-up sizing For VCC = 3.3V: | Speed | Recommended pull-up | |---|---| | Standard (100 kHz) | 4.7 kΩ | | Fast (400 kHz) | 4.7 kΩ or 2.2 kΩ | | Fast Plus (1 MHz) | 2.2 kΩ or 1 kΩ | | High Speed (3.4 MHz) | 1 kΩ + external buffer | Bus capacitance matters. Wire capacitance ~ 1 pF/cm. Total bus capacitance (wire + slaves + master) should be < 400 pF for standard, < 200 pF for fast modes. ### Clock stretching …
Read the whole file at its exact version.
How to install
mdr add hermeticormus/libreembed-claude-code/communication-buses@sha256:39b4d25da898bd76The line at the top of this page pins the label git:20260930.ba05790, 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_nj7wx7jdfr3ba5v4)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 3 versions of this file, all committed on Sep 30, 2026.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260930.327a46d latest | 2026-09-30 | 327a46d | 14,501 B | A | view · diff |
| git:20260930.ba05790 | 2026-09-30 | ba05790 | 14,724 B | A | view · diff |
| git:20260930.dffc082 | 2026-09-30 | dffc082 | 14,488 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 (14501 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
hermeticormus/libreembed-claude-code · 51 stars · license MIT · pushed 2026-10-09 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_nj7wx7jdfr3ba5v4 GET https://markdownregistry.com/api/v1/resolve?ref=hermeticormus/libreembed-claude-code/communication-buses GET https://markdownregistry.com/api/v1/blob/39b4d25da898bd76d3698e9c7cd0fbcb35d2200e9ebd1f31107fc809a82db610
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.