memory-bus-architecture

memory-bus-architecture is a skill for Claude Code, Codex from bahaabdelwahed/embedded-claude-plugin. It costs 95 tokens per session (1,260 once invoked), scanned A, original, MIT.

A skill for extracting an STM32 microcontroller's internal buses, memory connections, DMA routing, and clock configuration from reference manuals.

In plain words
What is it for?
Use it to document AHB and APB buses, Cortex-M instruction and data buses, DMA controllers and request mappings, bus access, clock sources, PLL settings, and frequency prescalers.
Why use it?
It helps explain how the processor, memory, peripherals, and DMA controllers communicate, which is important when configuring transfers and clocks correctly.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to document AHB and APB buses, Cortex-M instruction and data buses, DMA controllers and request mappings, bus access, clock sources, PLL settings, and frequency prescalers.

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Install with agentmods
npx agentmods add skills/bahaabdelwahed/embedded-claude-plugin/memory-bus-architecture
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add bahaabdelwahed/embedded-claude-plugin --skill memory-bus-architecture
Clone the repo
git clone --depth 1 https://github.com/bahaabdelwahed/embedded-claude-plugin

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for memory-bus-architecture

README.md
[![agentmods](https://agentmods.dev/badge/skills/bahaabdelwahed/embedded-claude-plugin/memory-bus-architecture/github.svg)](https://agentmods.dev/skills/bahaabdelwahed/embedded-claude-plugin/memory-bus-architecture)
Your own site
<a href="https://agentmods.dev/skills/bahaabdelwahed/embedded-claude-plugin/memory-bus-architecture"><img src="https://agentmods.dev/badge/skills/bahaabdelwahed/embedded-claude-plugin/memory-bus-architecture/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for memory-bus-architecture

Your own site · 80×15
<a href="https://agentmods.dev/skills/bahaabdelwahed/embedded-claude-plugin/memory-bus-architecture"><img src="https://agentmods.dev/badge/skills/bahaabdelwahed/embedded-claude-plugin/memory-bus-architecture.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 95 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,260 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00095 $0.01260
Opus 5 $0.00048 $0.00630
Sonnet 5 $0.00019 $0.00252
Haiku 4.5 $0.00010 $0.00126

Measured 9d ago against content hash ab5b2c810137, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

memory-bus-architecture scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 9d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/memory-bus-architecture/SKILL.md · 106 lines

How it starts

The opening of the file, as written. The whole thing — 106 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Memory and Bus Architecture Extraction

Extract and interpret STM32 bus architecture, memory organization, and clock tree configuration from user-provided reference manual PDFs.

What to Extract

Bus Architecture

  • Bus matrix connections (which masters connect to which slaves)
  • AHB buses: AHB1, AHB2, AHB3 (and which peripherals are on each)
  • APB buses: APB1 (low-speed), APB2 (high-speed) and their max frequencies
  • Cortex-M buses: I-Bus (instruction), D-Bus (data), S-Bus (system)
  • Bus arbitration: round-robin vs fixed priority

DMA Architecture

  • DMA controller count (DMA1, DMA2)
  • Streams/channels per controller
  • DMA request mapping: which peripheral is on which stream/channel
  • DMA bus connections: which DMA can access which memory/peripheral
  • FIFO configuration options

Clock Tree

  • Clock sources: HSI, HSE, LSI, LSE, MSI (if applicable)
  • PLL configuration: input source, multiplication/division factors
  • SYSCLK source selection
  • AHB prescaler (HCLK)
  • APB1 prescaler (PCLK1) and APB2 prescaler (PCLK2)
  • Peripheral clock sources and maximum frequencies
  • MCO (Microcontroller Clock Output) options

Where to Find This Information

Reference Manual - Bus Architecture

Glob pattern: docs/reference-manual/*.pdf

  1. Read pages 1-5 (table of contents)
  2. Find chapter titled "System and memory overview" or "Memory and bus architecture" (typically chapter 2)
  3. Read that chapter (usually 10-20 pages) to find:
    • System architecture block diagram (bus matrix figure)
    • Bus matrix table showing master/slave connections
    • Memory map table with address ranges
  4. Find chapter titled "DMA controller" or "DMA"
    • DMA request mapping table (critical: shows which peripheral maps to which stream/channel)
    • DMA block diagram showing bus connections

Reference Manual - Clock Tree

  1. From ToC, find chapter titled "Reset and clock control (RCC)"
  2. Read the clock tree figure (usually one of the first figures in the RCC chapter)
  3. Extract PLL configuration registers and prescaler options
  4. Find the table showing maximum frequencies per bus domain

Read the full file on GitHub · 106 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 9d ago First seen · 106 lines · 95 tokens per session scan A ab5b2c810137

Subscribe to this mod's changes

memory-bus-architecture is a skill published in the GitHub repository bahaabdelwahed/embedded-claude-plugin (5 stars, last pushed 5mo ago), licensed MIT. It adds 95 tokens to every session and 1,260 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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