Agent skill

Spi I2c Baremetal

by mohitmishra786 in mohitmishra786/low-level-dev-skills

Bare-metal SPI and I2C skill for serial peripheral buses. An agent skill from mohitmishra786/low-level-dev-skills.

MITAuto-check passedDevelopment

Install Spi I2c Baremetal

skills CLI

$ npx skills add mohitmishra786/low-level-dev-skills --skill spi-i2c-baremetal -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI

$ gh skill install mohitmishra786/low-level-dev-skills spi-i2c-baremetal --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy

$ git clone --depth 1 https://github.com/mohitmishra786/low-level-dev-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/baremetal/spi-i2c-baremetal .claude/skills/spi-i2c-baremetal && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Paste into Claude Code

Install the "spi-i2c-baremetal" agent skill from https://github.com/mohitmishra786/low-level-dev-skills/tree/main/skills/baremetal/spi-i2c-baremetal into .claude/skills/spi-i2c-baremetal/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "spi-i2c-baremetal", then confirm the skill loads.

Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

$skill-installer

$skill-installer install https://github.com/mohitmishra786/low-level-dev-skills/tree/main/skills/baremetal/spi-i2c-baremetal

Type this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.

skills CLI

$ npx skills add mohitmishra786/low-level-dev-skills --skill spi-i2c-baremetal -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install mohitmishra786/low-level-dev-skills spi-i2c-baremetal --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/mohitmishra786/low-level-dev-skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/baremetal/spi-i2c-baremetal .agents/skills/spi-i2c-baremetal && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "spi-i2c-baremetal" agent skill from https://github.com/mohitmishra786/low-level-dev-skills/tree/main/skills/baremetal/spi-i2c-baremetal into .agents/skills/spi-i2c-baremetal/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "spi-i2c-baremetal", then confirm the skill loads.

Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add mohitmishra786/low-level-dev-skills --skill spi-i2c-baremetal -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install mohitmishra786/low-level-dev-skills spi-i2c-baremetal --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/mohitmishra786/low-level-dev-skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/baremetal/spi-i2c-baremetal .cursor/skills/spi-i2c-baremetal && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "spi-i2c-baremetal" agent skill from https://github.com/mohitmishra786/low-level-dev-skills/tree/main/skills/baremetal/spi-i2c-baremetal into .cursor/skills/spi-i2c-baremetal/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "spi-i2c-baremetal", then confirm the skill loads.

Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

gemini skills install

$ gemini skills install https://github.com/mohitmishra786/low-level-dev-skills.git --path skills/baremetal/spi-i2c-baremetal

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add mohitmishra786/low-level-dev-skills --skill spi-i2c-baremetal -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install mohitmishra786/low-level-dev-skills spi-i2c-baremetal --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/mohitmishra786/low-level-dev-skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/baremetal/spi-i2c-baremetal .gemini/skills/spi-i2c-baremetal && rm -rf skills-src

Use ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.

Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/

Paste into Gemini CLI

Install the "spi-i2c-baremetal" agent skill from https://github.com/mohitmishra786/low-level-dev-skills/tree/main/skills/baremetal/spi-i2c-baremetal into .gemini/skills/spi-i2c-baremetal/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "spi-i2c-baremetal", then confirm the skill loads.

Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

GitHub CLI

$ gh skill install mohitmishra786/low-level-dev-skills spi-i2c-baremetal

Installs for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).

skills CLI

$ npx skills add mohitmishra786/low-level-dev-skills --skill spi-i2c-baremetal -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/mohitmishra786/low-level-dev-skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/baremetal/spi-i2c-baremetal .github/skills/spi-i2c-baremetal && rm -rf skills-src

Use ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.

GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/

Paste into GitHub Copilot

Install the "spi-i2c-baremetal" agent skill from https://github.com/mohitmishra786/low-level-dev-skills/tree/main/skills/baremetal/spi-i2c-baremetal into .github/skills/spi-i2c-baremetal/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "spi-i2c-baremetal", then confirm the skill loads.

GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add mohitmishra786/low-level-dev-skills --skill spi-i2c-baremetal -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install mohitmishra786/low-level-dev-skills spi-i2c-baremetal --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/mohitmishra786/low-level-dev-skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/baremetal/spi-i2c-baremetal .opencode/skills/spi-i2c-baremetal && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "spi-i2c-baremetal" agent skill from https://github.com/mohitmishra786/low-level-dev-skills/tree/main/skills/baremetal/spi-i2c-baremetal into .opencode/skills/spi-i2c-baremetal/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "spi-i2c-baremetal", then confirm the skill loads.

OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

Facts

Skill name: spi-i2c-baremetal
GitHub stars: 252
Token cost: ~681 tokens
SKILL.md length: 161 words
Files: 1
Skills in repo: 138
Repo updated: Jun 27, 2026
First seen: Oct 7, 2026
Licence: MIT

At a glance

Bare-metal SPI and I2C skill for serial peripheral buses. An agent skill from mohitmishra786/low-level-dev-skills.

Works in 4 steps: SPI master (STM32) → I2C master — register read → Common protocols → …
Implementing master-mode transfers
SKILL.md covers Purpose, When to Use, Workflow and Common Problems, plus 1 more section
Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Spi I2c Baremetal is an agent skill from mohitmishra786/low-level-dev-skills. Bare-metal SPI and I2C skill for serial peripheral buses. Use when implementing master-mode transfers, register read/write protocols, or debugging bus stalls. Activates on queries about SPI bare-metal, I2C START/STOP, sensor register read, or clock phase/polarity.

Its SKILL.md is about 680 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Development. The repository describes itself as: A curated suite of AI agent skills for systems and low-level programming with C/C++, Rust, and Zig toolchains, covering compilers, debuggers, profilers, build systems…. The licence is MIT.

When your agent uses it

Implementing master-mode transfers
Register read/write protocols
Debugging bus stalls

Example prompts

“/spi-i2c-baremetal”

Workflow steps

4 steps, taken from the step headings in SKILL.md.

SPI master (STM32)
I2C master — register read
Common protocols
Agent usage

What it can do on your machine

Read from SKILL.md and the folder at commit bdc5847. It shows what the files ask for, not the result of running them.

Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md (its code samples are c).
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Spi I2c Baremetal loads about 681 tokens when it runs. Until then it costs about 71 tokens; SKILL.md has 161 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~71
When it runs · the whole SKILL.md, loaded when a task matches: ~681

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from mohitmishra786/low-level-dev-skills at commit bdc5847, republished under its MIT licence (© mohitmishra786). 161 words, ~681 tokens.

Download SKILL.mdSave it as .claude/skills/spi-i2c-baremetal/SKILL.md (or your agent's skills folder).

name: spi-i2c-baremetal
description: Bare-metal SPI and I2C skill for serial peripheral buses. Use when implementing master-mode transfers, register read/write protocols, or debugging bus stalls. Activates on queries about SPI bare-metal, I2C START/STOP, sensor register read, or clock phase/polarity.

SPI and I2C (Bare-Metal)

Purpose

Implement SPI and I2C master drivers for sensor and memory chips: clock configuration, phase/polarity (SPI), START/ACK sequences (I2C), and common register-oriented transaction patterns.

When to Use

Reading an I2C sensor (WHO_AM_I register)
SPI flash or display bring-up
Debugging NACK or stuck SCL
Replacing HAL_I2C/SPI with minimal code

Workflow

1. SPI master (STM32)

/* Mode 0: CPOL=0, CPHA=0 — check slave datasheet */
SPI1->CR1 = SPI_CR1_MSTR | SPI_CR1_SSM | SPI_CR1_SSI
          | (3 << SPI_CR1_BR_Pos);  /* baud divider */
SPI1->CR1 |= SPI_CR1_SPE;

uint8_t spi_xfer(SPI_TypeDef *spi, uint8_t tx) {
    while (!(spi->SR & SPI_SR_TXE))
        ;
    *(volatile uint8_t *)&spi->DR = tx;
    while (!(spi->SR & SPI_SR_RXNE))
        ;
    return *(volatile uint8_t *)&spi->DR;
}

CS (GPIO bit-bang):

GPIO_CS_LOW();
spi_xfer(SPI1, reg | 0x80);  /* read */
uint8_t val = spi_xfer(SPI1, 0xFF);
GPIO_CS_HIGH();

2. I2C master — register read

/* START → addr+W → reg → repeated START → addr+R → data → STOP */
bool i2c_read_reg(I2C_TypeDef *i2c, uint8_t dev7, uint8_t reg, uint8_t *out) {
    if (!i2c_start(i2c)) return false;
    if (!i2c_tx(i2c, (dev7 << 1) | 0)) return false;
    if (!i2c_tx(i2c, reg)) return false;
    if (!i2c_restart(i2c)) return false;
    if (!i2c_tx(i2c, (dev7 << 1) | 1)) return false;
    *out = i2c_rx(i2c, false);  /* NACK last byte */
    i2c_stop(i2c);
    return true;
}

Poll SB, ADDR, TXE, RXNE, BTF per reference manual.

3. Common protocols

Pattern	Bus
`reg + write data`	I2C/SPI
`0x80	reg` read (MSB set)
16-bit big-endian length prefix	SPI flash

4. Agent usage

/spi-i2c-baremetal I2C read of register 0x0F from device 0x68

Common Problems

Symptom	Cause	Fix
I2C NACK	Wrong 7-bit addr (8-bit in datasheet)	Shift addr; check R/W bit
SPI garbage	CPOL/CPHA mismatch	Match slave mode table
Bus stuck SCL low	Slave clock stretch / fault	Bus recovery (clock pulses)
CS glitch	CS timing vs clock	Assert CS before first SCK

skills/baremetal/gpio-baremetal — CS, SDA, SCL pins
skills/baremetal/peripherals-from-datasheet — timing requirements
skills/kernel-dev/bus-drivers-i2c-spi — Linux kernel side

Files

Just SKILL.md in skills/baremetal/spi-i2c-baremetal of mohitmishra786/low-level-dev-skills.

Open the folder on GitHubat commit bdc5847

Compare with similar skills

Spi I2c Baremetal next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Spi I2c Baremetal compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Spi I2c Baremetal this skillmohitmishra786/low-level-dev-skills	252	—	~681	Automated safety check: Pass	MIT	3 mo ago
Vercel Composition Patternssupabase/supabase	111k	58 repos	~726	Automated safety check: Pass	MIT	yesterday
Finishing a Development Branchobra/superpowers	297k	5 repos	~1.9k	Automated safety check: Pass	MIT	yesterday
Typescript Advanced Typesrolling-scopes/rsschool-app	10k	25 repos	~4.2k	Automated safety check: Pass	MPL-2.0	7 days ago
PR Babysitteropeninterpreter/openinterpreter	69k	3 repos	~4.2k	Automated safety check: Pass	Apache-2.0	today
Code Review ChecklistshareAI-lab/learn-claude-code	78k	4 repos	~1.1k	Automated safety check: Pass	MIT	12 days ago

Similar skills

Vercel Composition Patterns
supabase/supabase
Official
React composition patterns that scale. An agent skill from supabase/supabase.
111k GitHub starsUsed in 58 repos~726 tokens
DevelopmentAuto-check passed
Finishing a Development Branch
obra/superpowers
Walks the last step of a branch: confirm tests pass, detect the git environment, ask how to integrate, carry out your choice and clean up the worktree.
297k GitHub starsUsed in 5 repos~1.9k tokens
DevelopmentAuto-check passed
Typescript Advanced Types
rolling-scopes/rsschool-app
Master TypeScript's advanced type system including generics, conditional types, mapped types, template literals, and utility types for building type-safe applications.
10k GitHub starsUsed in 25 repos~4.2k tokens
DevelopmentAuto-check passed
PR Babysitter
openinterpreter/openinterpreter
Watches an open GitHub pull request until it merges, handling review comments, diagnosing CI failures and retrying flaky checks along the way.
69k GitHub starsUsed in 3 repos~4.2k tokens
DevelopmentAuto-check passed
Code Review Checklist
shareAI-lab/learn-claude-code
Reviews code against a five-part checklist covering security, correctness, performance, maintainability and testing, and reports findings in a fixed format.
78k GitHub starsUsed in 4 repos~1.1k tokens
DevelopmentAuto-check passed
Greploop
onyx-dot-app/onyx
Iteratively improves a PR (GitHub), MR (GitLab), or shelved changelist (Perforce) until Greptile gives it a 5/5 confidence score with zero unresolved comments.
32k GitHub starsUsed in 4 repos~3.3k tokens
DevelopmentAuto-check passed

Questions about Spi I2c Baremetal

What does Spi I2c Baremetal do?

Bare-metal SPI and I2C skill for serial peripheral buses. An agent skill from mohitmishra786/low-level-dev-skills. Spi I2c Baremetal is an agent skill from mohitmishra786/low-level-dev-skills. Bare-metal SPI and I2C skill for serial peripheral buses.

When should I use Spi I2c Baremetal?

Spi I2c Baremetal fits situations like: implementing master-mode transfers; register read/write protocols; debugging bus stalls.

How do I install Spi I2c Baremetal in Claude Code?

Run `npx skills add mohitmishra786/low-level-dev-skills --skill spi-i2c-baremetal -a claude-code`. Or copy the skill folder (skills/baremetal/spi-i2c-baremetal in mohitmishra786/low-level-dev-skills) into .claude/skills/spi-i2c-baremetal in your project. Claude Code loads it when a task matches its description.

How do I install Spi I2c Baremetal in Codex?

Run `npx skills add mohitmishra786/low-level-dev-skills --skill spi-i2c-baremetal -a codex`. Or copy the skill folder (skills/baremetal/spi-i2c-baremetal in mohitmishra786/low-level-dev-skills) into .agents/skills/spi-i2c-baremetal in your project. Codex loads it when a task matches its description.

Can I use Spi I2c Baremetal in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add mohitmishra786/low-level-dev-skills --skill spi-i2c-baremetal -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/spi-i2c-baremetal, .gemini/skills/spi-i2c-baremetal, .github/skills/spi-i2c-baremetal and .opencode/skills/spi-i2c-baremetal in your project.

What does Spi I2c Baremetal need to run?

SKILL.md names no scripts, command-line tools or credentials: Spi I2c Baremetal is instructions for the agent only.

Does Spi I2c Baremetal access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Spi I2c Baremetal safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Spi I2c Baremetal use?

Spi I2c Baremetal is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Spi I2c Baremetal use?

About 681 tokens (SKILL.md is roughly 2.7k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Spi I2c Baremetal?

Skills that share tags, products or a category with Spi I2c Baremetal: Vercel Composition Patterns (supabase/supabase, 111k stars), Finishing a Development Branch (obra/superpowers, 297k stars), Typescript Advanced Types (rolling-scopes/rsschool-app, 10k stars) and PR Babysitter (openinterpreter/openinterpreter, 69k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Spi I2c Baremetal?

mohitmishra786 (a GitHub user) maintains it in mohitmishra786/low-level-dev-skills, which has 252 GitHub stars. The repository holds 138 skills in this directory. The repository was last updated on June 27, 2026.

Source: mohitmishra786/low-level-dev-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Install Spi I2c Baremetal

Facts

At a glance

What it does

When your agent uses it

Example prompts

Workflow steps

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

SPI and I2C (Bare-Metal)

Purpose

When to Use

Workflow

1. SPI master (STM32)

2. I2C master — register read

3. Common protocols

4. Agent usage

Common Problems

Related Skills

Files

Compare with similar skills

Similar skills

More from mohitmishra786/low-level-dev-skills

Related

Questions about Spi I2c Baremetal