createSerialResponseSink()

fl::function< void(const fl::json &)> fl::createSerialResponseSink ( const char * prefix = "REMOTE: " )

inline

Create a JSON-RPC ResponseSink that writes to fl:: serial output.

Parameters

prefix

Optional prefix to prepend to responses (default: "REMOTE: ")

Returns

ResponseSink callback suitable for fl::Remote constructor

Note

Composes protocol layer (schema filtering) with transport layer (serial I/O)

Definition at line 197 of file serial.h.

                                                     : ") FL_NO_EXCEPT {
    return [prefix](const fl::json& response) {
        // Stream the serialized response straight to serial so large
        // responses (e.g. rpc.discover) never need a contiguous heap buffer
        // proportional to the document (FastLED #4899).
        SerialWriter serial;
        if (prefix && prefix[0] != '\0') {
            serial.write(prefix, fl::strlen(prefix));
        }
        response.write_to(
            [](void* ctx, const char* data, fl::size len) {
                static_cast<SerialWriter*>(ctx)->write(data, len);
            },
            &serial);
        serial.println("");
    };
}

References FL_NO_EXCEPT, fl::SerialWriter::println(), strlen(), and fl::SerialWriter::write().

Referenced by createSerialTransport().

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