Overview

UUIDs

Bluetooth uses UUIDs to identify almost everything. The Bluetooth SIG specifies a number of “short” 16-bit UUIDs for general use. A device is free to define other “long” 128-bit UUIDs if it wants to express non-standard functionality.

The card10 defines a few non-standard UUIDs. They are prefixed with 4232:

UUID

Usage

Comment

422301XX-2342-2342-2342-234223422342

File Transfer Service

Used by the Companion App to install apps on the card10

422302XX-2342-2342-2342-234223422342

card10 Service

Controls general card10 functionality like LEDs and personal state

422303XX-2342-2342-2342-234223422342

ECG Service

Allows to stream ECG measurements via BLE

422380XX-2342-2342-2342-234223422342

Experimental usage

To be used for development and experiments

The first byte after the prefix identifies the service (e.g. 03 for ECG). The next byte is reserved for UUIDs used by the service itself. The service uses 00 at this position. The first attribute inside the service uses 01 at this position. See the documentation of any service for an example.

You can use the UUID range 422380XX-2342-2342-2342-234223422342 for your own experiments / demos/ development. For example the demos under demos/ in the repository use this range of UUIDs.