Principia Embedded: Musings on State-Time
Embedded systems are not just processing logic — they are coordinating time.
Hard-won lessons on inherited code, firmware quality, board bring-up, architecture, debugging, and the engineering judgment that keeps projects moving.
A multi-part series on state, time, scheduling, cooperative execution, protothreads, and the engineering tradeoffs hidden inside “simple” embedded firmware.
Embedded systems are not just processing logic — they are coordinating time.
Complexity never disappears. It changes form — and over time, it expresses itself as entropy.
A coffee-maker example that walks from blocking loops to explicit state and shared time.
Protothreads, Duff’s Device, and when execution flow begins to carry state.
When code meets metal, do not assume the foundation is solid. Verify the current state before building on it.
A mechanical audit gives inherited embedded code a real mileage reading.
Minimizing warnings is not cosmetic; it is engineering risk reduction.
Quiet builds, static analysis, and mechanical audits reveal the real foundation.
Coding standards turn tribal knowledge into transferable engineering practice.
Single-sourced silicon risk, contingency planning, and practical embedded project survival.
Mesa Technologies helps teams stabilize embedded projects, review code foundations, bring up boards, and reduce technical risk.