arduino_bridge 1.0.2

A Dart/Flutter package for communicating with the Arduino Router using the MessagePack-RPC protocol on the Arduino Uno Q and Ventuno Q.

arduino_bridge

Flutter gets physical

A Dart/Flutter package for communicating with the Arduino Router using the MessagePack-RPC protocol. It is designed to run on Linux only and targets the Arduino Uno Q and the Ventuno Q.

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How it works

The Arduino router daemon listens on a Unix domain socket and acts as a broker between the host application and the MCU. This package connects to that socket and communicates using MessagePack-RPC - a compact binary RPC protocol built on top of MessagePack serialization.

Three message types are used:

Type	Direction	Description
Request (0)	host → router	Call a method and wait for a response
Response (1)	router → host	Result or error for a previous request
Notification (2)	host → router	Fire-and-forget message, no response

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Requirements

• Arduino Uno Q or Ventuno Q with the Arduino router daemon running

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Flutter compatibility

This package is compatible with Flutter for Linux desktop only. No additional setup is needed beyond targeting the Linux platform in your Flutter project.

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Usage

Connecting

final bridge = ArduinoBridge();
final connected = await bridge.connect();

connect() returns true on success and false if the router is not reachable.

Calling a method

call() sends a request and waits for the router to reply:

final result = await bridge.call('sensor/read', [0]);

The default timeout is 5 seconds.

A TimeoutException is thrown if no response arrives in time. An Exception is thrown if the router returns an error payload.

Sending a notification

notify() sends a fire-and-forget message with no response:

bridge.notify('set_led_state', [true]);

Disconnecting

disconnect() closes the socket and rejects all pending call() futures with a StateError:

await bridge.disconnect();

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API reference

Method	Returns	Description
connect()	Future<bool>	Opens the socket connection
call(method, args, {timeout})	Future<dynamic>	Sends a request and awaits the response
notify(method, args)	void	Sends a fire-and-forget notification
register(methodName)	Future<void>	Registers a method name with the router
reset()	Future<void>	Resets the router connection state
disconnect()	Future<void>	Closes the connection

Full API documentation is available on pub.dev.

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License

This package is licensed under the MIT License.