This is a Flutter application that displays a square which can be remotely manipulated using Bluetooth Low Energy.
The application publishes a GATT (Generic Attribute Profile) service that provides three control points to modify different aspects of the square.
This application publishes a custom GATT service which is identified by the 128-bit UUID 548c2932-f58c-4c0b-9a4d-92110695a591. The application advertises this service UUID along with a name (“BLE Rect”) while listening for a client to connect.
A simple WebBluetooth client to interact with this service can be found here.
This service contains the following characteristics:
| Field | Definition |
|---|---|
| UUID | 2bf96f76-f872-422e-8dbd-d2b425850d91 |
| properties | write |
| format | uint8[3] |
| description | RGB components of the color |
| Field | Definition |
|---|---|
| UUID | 4939518b-b222-404d-90b5-7f675f13f27f |
| properties | write |
| format | uint8 (0-255) |
| description | The current scale as percentage |
| Field | Definition |
|---|---|
| UUID | f1121828-32b3-4675-a46e-db826531c348 |
| properties | write |
| format | uint16 (0-360) |
| description | The current rotation in degrees |