stm32-hal

A command for looking up STM32 HAL and LL functions. HAL and LL are STM32 software libraries used to control the microcontroller's hardware.

In plain words
What is it for?
Use it to find function signatures, parameters, return values, error codes, examples, and related functions.
Why use it?
It saves time spent searching library references and checking function details manually.

Command

Part of the stm32 plugin — 5 commands, 18 agents, 1 MCP server shipped together

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.

agentmods
npx agentmods add commands/creativec09/stm32/stm32-hal
Clone the repo
git clone --depth 1 https://github.com/creativec09/stm32

Or install stm32, the plugin that ships this one along with the rest of its 5 commands, 18 agents, 1 MCP server.

Per session 11 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 139 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00011 $0.00139
Opus 5 $0.00005 $0.00069
Sonnet 5 $0.00002 $0.00028
Haiku 4.5 $0.00001 $0.00014

Measured 3d ago against content hash cfb17631a5db, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

stm32-hal 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 3d 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.

commands/stm32-hal.md · 33 lines

What it actually says

STM32 HAL Function Lookup

Get documentation for HAL/LL library functions.

Usage

/stm32-hal <function_name>

Examples

/stm32-hal HAL_UART_Transmit
/stm32-hal HAL_SPI_TransmitReceive_DMA
/stm32-hal HAL_GPIO_Init
/stm32-hal HAL_TIM_PWM_Start
/stm32-hal LL_GPIO_SetPinMode

What This Does

Uses lookup_hal_function tool to find:

  • Function signature and parameters
  • Return values and error codes
  • Usage examples
  • Related functions
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. 3d ago First seen · 33 lines · 11 tokens per session scan A cfb17631a5db

Subscribe to this mod's changes

stm32-hal is a command published in the GitHub repository creativec09/stm32 (11 stars, last pushed 5mo ago), licensed MIT. It adds 11 tokens to every session and 139 once invoked, about $0.0001 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 2026-08-30.