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ESP-IDF
>=6.0.0,<6.1.0
ESP-IDF is Espressif’s official IoT Development Framework for the ESP32, ESP32-S and ESP32-C series of SoCs.
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NVS config store, JSON-Schema descriptors, REST-backed settings
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Event bus: espOS lifecycle events (network, SignalK, OTA) on the default esp_event loop
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Device conditions (warn/alarm) and the sinks that consume them
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HTTP server, REST API, SSE, the web UI from a LittleFS partition
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Network seam: default route across transports, hostname, device id, mDNS responder, /net/status
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cJSON: Ultralightweight JSON parser in ANSI C
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The device's wall clock: SNTP, SignalK and RTC sources behind one ranked API