sensors_plus_watchos 0.0.1

watchOS implementation of the sensors_plus plugin, streaming accelerometer, user-accelerometer, gyroscope, and magnetometer data from CoreMotion via dart:ffi.

sensors_plus_watchos

The watchOS implementation of sensors_plus.

Motion samples come from CoreMotion (CMMotionManager) over dart:ffi. Native updates cache the latest value and the Dart side polls it on a timer at the requested sampling period.

Scaffolded by flutter-watchos plugin port from sensors_plus, then implemented and verified by hand.

Usage

This is a federated plugin implementation. Apps that already depend on sensors_plus and target watchOS only need to add this package alongside it:

dependencies:
  sensors_plus: ^<latest>
  sensors_plus_watchos: ^0.0.1

The plugin registers automatically via Flutter's federated registry — no explicit imports required from app code.

Behaviour on watchOS

Stream	watchOS
accelerometerEventStream	supported (raw acceleration, m/s²)
userAccelerometerEventStream	supported (gravity removed, via device motion)
gyroscopeEventStream	supported (rad/s)
magnetometerEventStream	supported (µT)
barometerEventStream	not implemented (separate altimeter API)

Units and axis signs match the sensors_plus iOS implementation.

Simulator note: the watchOS Simulator has no motion hardware, so the streams emit nothing there. On a physical Apple Watch they stream normally.

Status

Platform	Implemented
Apple Watch (watchos)	yes (accelerometer, gyroscope, magnetometer, user-accel)
Watch simulator (watchsimulator)	builds/links; no samples (no hardware)

License

The FlutterWatch Authors under a BSD-3-Clause license. See LICENSE for the full text.