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Agent skill

Dma Baremetal

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

Bare-metal DMA skill for memory-peripheral transfers. An agent skill from mohitmishra786/low-level-dev-skills.

MITAuto-check passedDevelopment

Install Dma Baremetal

skills CLI
$ npx skills add mohitmishra786/low-level-dev-skills --skill dma-baremetal -a claude-code

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

GitHub CLI
$ gh skill install mohitmishra786/low-level-dev-skills dma-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/dma-baremetal .claude/skills/dma-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/

Facts

Skill name
dma-baremetal
GitHub stars
252
Token cost
~554 tokens
SKILL.md length
121 words
Files
1
Skills in repo
138
Repo updated
First seen
Licence
MIT

At a glance

Bare-metal DMA skill for memory-peripheral transfers. An agent skill from mohitmishra786/low-level-dev-skills.

  • Works in 4 steps: STM32 DMA2 stream (periph→mem) → Circular / double buffer → Cortex-M7 cache (H7) → …
  • Configuring DMA channels
  • 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

Dma Baremetal is an agent skill from mohitmishra786/low-level-dev-skills. Bare-metal DMA skill for memory-peripheral transfers. Use when configuring DMA channels, circular mode, double buffering, or DMA IRQ completion. Activates on queries about DMA bare-metal, circular buffer, memory-to-peripheral, or DMA stream configuration.

Its SKILL.md is about 550 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

  • Configuring DMA channels
  • Double buffering
  • DMA IRQ completion

Example prompts

  • “/dma-baremetal”

Workflow steps

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

  1. STM32 DMA2 stream (periph→mem)
  2. Circular / double buffer
  3. Cortex-M7 cache (H7)
  4. 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

Dma Baremetal loads about 554 tokens when it runs. Until then it costs about 67 tokens; SKILL.md has 121 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~67
When it runs · the whole SKILL.md, loaded when a task matches
~554

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). 121 words, ~554 tokens.

Download SKILL.mdSave it as .claude/skills/dma-baremetal/SKILL.md (or your agent's skills folder).
name
dma-baremetal
description
Bare-metal DMA skill for memory-peripheral transfers. Use when configuring DMA channels, circular mode, double buffering, or DMA IRQ completion. Activates on queries about DMA bare-metal, circular buffer, memory-to-peripheral, or DMA stream configuration.

DMA (Bare-Metal)

Purpose

Configure DMA controllers for memory-to-peripheral and peripheral-to-memory transfers: channel/stream setup, burst sizes, circular mode, half-transfer interrupts, and cache coherency on Cortex-M7.

When to Use

  • Offloading UART/SPI/ADC bulk transfers from CPU
  • Audio/streaming double buffers
  • Debugging DMA not triggering or corrupt data

Workflow

1. STM32 DMA2 stream (periph→mem)
c
/* UART2 RX DMA — Stream5, Channel 4 (verify RM matrix) */
RCC->AHB1ENR |= RCC_AHB1ENR_DMA1EN;

DMA1_Stream5->PAR  = (uint32_t)&USART2->DR;
DMA1_Stream5->M0AR = (uint32_t)rx_buf;
DMA1_Stream5->NDTR = sizeof(rx_buf);
DMA1_Stream5->CR   = DMA_SxCR_MINC     /* mem increment */
                   | DMA_SxCR_TCIE    /* transfer complete IRQ */
                   | DMA_SxCR_CHSEL_2 /* channel 4 */
                   | DMA_SxCR_EN;

USART2->CR3 |= USART_CR3_DMAR;
2. Circular / double buffer
c
DMA1_Stream5->CR |= DMA_SxCR_CIRC;  /* auto-reload NDTR */
/* HTIF = first half, TCIF = second half — process in IRQ */
3. Cortex-M7 cache (H7)

DMA buffer in non-cacheable region or clean/invalidate D-Cache:

c
SCB_CleanDCache_by_Addr((void*)tx_buf, len);
/* after DMA TX */
SCB_InvalidateDCache_by_Addr((void*)rx_buf, len);
4. Agent usage
/dma-baremetal Configure UART RX DMA circular buffer on STM32F4

Common Problems

SymptomCauseFix
DMA no startStream/channel mismatchRM DMA request mapping table
Corrupt RXCache coherency (M7)Invalidate after RX complete
NDTR stuckPeripheral DMA enable missingUSART_CR3 DMAR/DMAT
IRQ floodClear flags in ISRDMA_LISR/HIFCR
  • skills/baremetal/uart-serial-baremetal — USART DMA enable
  • skills/baremetal/adc-dac-baremetal — ADC DMA mode
  • skills/low-level-programming/cpu-cache-opt — cache line concepts

© mohitmishra786, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

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

Open the folder on GitHubat commit bdc5847

Compare with similar skills

Dma 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.

Dma Baremetal compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Dma Baremetal this skillmohitmishra786/low-level-dev-skills252—~554Automated safety check: PassMIT
Vercel Composition Patternssupabase/supabase111k58 repos~726Automated safety check: PassMIT
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Typescript Advanced Typesrolling-scopes/rsschool-app10k25 repos~4.2kAutomated safety check: PassMPL-2.0
PR Babysitteropeninterpreter/openinterpreter69k3 repos~4.2kAutomated safety check: PassApache-2.0
Code Review ChecklistshareAI-lab/learn-claude-code78k4 repos~1.1kAutomated safety check: PassMIT

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Categories

Questions about Dma Baremetal

What does Dma Baremetal do?

Bare-metal DMA skill for memory-peripheral transfers. An agent skill from mohitmishra786/low-level-dev-skills. Dma Baremetal is an agent skill from mohitmishra786/low-level-dev-skills. Bare-metal DMA skill for memory-peripheral transfers.

When should I use Dma Baremetal?

Dma Baremetal fits situations like: configuring DMA channels; double buffering; DMA IRQ completion.

How do I install Dma Baremetal in Claude Code?

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

How do I install Dma Baremetal in Codex?

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

Can I use Dma 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 dma-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/dma-baremetal, .gemini/skills/dma-baremetal, .github/skills/dma-baremetal and .opencode/skills/dma-baremetal in your project.

What does Dma Baremetal need to run?

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

Does Dma 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 Dma 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 Dma Baremetal use?

Dma 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 Dma Baremetal use?

About 554 tokens (SKILL.md is roughly 2.2k 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 Dma Baremetal?

Skills that share tags, products or a category with Dma 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 Dma 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.