Requirements Documentation

This section contains system and component requirements following Sphinx-Needs methodology.

Requirements:

Overview

Requirements define what the system should do. They are:

  • Traceable - Each requirement has a unique ID

  • Testable - Can be verified through testing

  • Clear - Unambiguous and specific

  • Linked - Connected to design and implementation

Requirement Hierarchy

Requirements are organized in two levels:

  1. System Requirements (REQ_SYS_*) - High-level system capabilities

  2. Component Requirements - Detailed component-level specifications

    • REQ_SNS_* - Distance sensor (HC-SR04 ultrasonic)

    • REQ_LED_* - LED strip controller (WS2812)

    • REQ_DSP_* - Display system (visualization logic)

    • REQ_STARTUP_* - Startup test sequence

    • REQ_WEB_* - Web server and user interface

    • REQ_CFG_JSON_* - Configuration management (JSON-based system)

    • REQ_NETIF_TUNNEL_* - QEMU network tunnel driver

Component requirements are linked to their parent system requirements using Sphinx-Needs :links: attribute.

All requirements use Sphinx-Needs directives for automatic traceability and validation.