97 lines
1.7 KiB
Markdown
97 lines
1.7 KiB
Markdown
# ADR-000 — HubAudio Engineering Philosophy
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**Status:** Accepted
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**Date:** 2026-08-01
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---
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## Purpose
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HubAudio is designed as a professional embedded platform.
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The primary objective is **maintainability**, followed by extensibility, robustness and performance.
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The architecture shall minimise cognitive load for future developers.
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---
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# Core Principles
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## 1. Code that fits in your head
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Every class, function and module shall be understandable in isolation.
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If understanding a module requires reading large portions of the codebase, the design should be reconsidered.
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Complexity must never be hidden.
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---
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## 2. One Responsibility
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Every module has exactly one responsibility.
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Examples:
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- PowerManager
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- DSPManager
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- RadioManager
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- BluetoothManager
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- AudioRouter
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Responsibilities shall never overlap.
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---
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## 3. Hardware is software controlled
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Every subsystem should, whenever technically possible, support:
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- independent power control
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- independent reset
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- diagnostics
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- firmware update
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---
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## 4. Digital-first architecture
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Audio remains digital until external conversion is explicitly required.
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The DSP is the centre of the audio routing architecture.
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---
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## 5. Documentation is part of the product
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Documentation is considered part of the deliverable.
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Every architectural decision shall be documented.
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---
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## 6. Simplicity over cleverness
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The simplest correct solution is preferred.
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Elegant architecture is preferred over clever implementation.
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---
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## 7. Small incremental changes
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The project evolves through small, reviewable improvements.
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Large architectural changes shall be avoided unless justified.
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---
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# Definition of Done
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A feature is considered complete only when:
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- implemented
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- documented
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- testable
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- understandable |