// the find
andregiacomini/SignalR_Embedded_Client
A SignalR client implementation targeting the LPC1768 ARM Cortex-M3 microcontroller, built with Keil uVision and CMSIS-RTOS. Intended to let embedded devices participate in SignalR hubs over Ethernet without a full OS. A niche but real problem — most SignalR client libraries assume a heap-rich environment.
Uses jsmn for JSON parsing, which is the correct choice for a constrained MCU (zero malloc, single-pass tokenizer). CMSIS-RTOS + lwIP stack is a reasonable foundation for a bare-metal network client. MISRA-C lint config is present, suggesting at least some attention to embedded coding standards. Keil uVision project files are committed, so the build environment is reproducible for anyone with the toolchain.
1 star, no documentation beyond 'built with Keil uVision', and the README has no protocol details, wiring diagrams, or usage examples — you're reverse-engineering this from source. No CMake or Makefile, so it's locked to a commercial Keil license; anyone without uVision is dead in the water from the start. The repo looks like a personal project artifact from 2021 with leaked debug configs for unrelated projects (combogard, pentasis, sesamus) — this is someone's work repo committed wholesale, not a library meant for others to use. No indication of which SignalR protocol version is supported (v1 long-polling? v2 WebSockets?), and WebSocket support on lwIP at this vintage was painful.