Firmware Architecture Document

High-level system design showing how firmware modules interact — task architecture, communication patterns, memory layout, and dependency maps with Mermaid diagrams.

Why It Matters

Architecture documents ensure your firmware is modular, testable, and maintainable. They help AI tools understand the big picture when generating or modifying code across multiple files.

What's Included

System overview diagram
Module breakdown
Task architecture
Inter-module communication
Memory map
Build system structure

How It's Generated

1

AI Research

Gemini with Google Search Grounding researches current SDK documentation, API references, and best practices for your specific hardware platform.

2

Document Generation

GPT-5.1 generates a comprehensive Architecture Doc using the research context, tailored to your project requirements and hardware.

3

Review & Edit

Review the generated document, make edits directly, or use AI refinement to adjust specific sections with custom instructions.

4

Export & Use

Download as part of your project bundle. The document integrates with all other generated docs and code scaffolds.

Other Document Types

PRD

Comprehensive document defining what your firmware product needs to do — functional requirements, non-functional requirements, power budgets, user stories, and acceptance criteria.

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HAL Doc

Defines the interface layer between your firmware application and hardware peripherals — GPIO, SPI, I2C, UART, ADC drivers with clean API definitions.

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State Machine

Formal definition of your firmware's state machine — states, transitions, guards, actions, and error recovery paths visualized with state diagrams.

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Context Bundle

Machine-readable JSON file containing all project context — hardware specs, pin mappings, library versions, and configuration — optimized for AI coding tools to consume.

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Bootloader/OTA

Complete specification for the device bootloader, firmware update mechanism (DFU), and over-the-air update flow — memory partitioning, image signing, and rollback strategy.

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Impl Plan

Phase-by-phase development roadmap breaking the firmware project into sprint-sized work packages with dependencies, milestones, and effort estimates.

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Frequently Asked Questions

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