Lightning Talk: From Ideas to 3 Firmwares Powering Railway-Infrastructure Monitoring...
summary
Claim: three firmwares in under two years that create a scalable wireless sensor network using Zephyr OS with about 200 sensors supported in upstream. Architecture uses a gray-box gateway with LTE‑M backend + BLE sensor links, Nordic MCUs, C‑Bus for MCU-to-MCU messaging, nanoPB/protobuf for payloads, west modules and CI for reproducible builds, hardware-in-the-loop tests and POSIX for more S‑in‑the‑loop. Practical notes: avoid long items on the system workqueue, follow Zephyr migration guides, and regularly measure power after config changes.
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