pub const SYSTEM_ID: BluetoothUuid16;Expand description
Bluetooth characteristic UUID.
0x2a23 System ID
The System ID characteristic is used to represent an extended unique identifier (EUI) of the system implementing the service that contains this characteristic.
This 64-bit structure is an EUI-64 which consists of an Organizationally Unique Identifier (OUI) concatenated with a manufacturer-defined identifier. The OUI is issued by the IEEE Registration Authority (RA) \RefRef{ieee_registration and should be used in accordance with the guidelines in \RefRef{ieee_tutorial. Supported lengths for IEEE-issued OUIs include 24 and 36 bits. In those cases, the remaining least significant 40 or 28 bits are manufacturer assigned.
A Bluetooth Device Address is an EUI-48, is 48 bits in length, and can be based on an OUI as well, but this is not required. See Core Spec, volume 2, part B, section 1.2. Historically an EUI-48 could be mapped to an EUI-64 by inserting either the value 0xFFFE or the value 0xFF-FF in the middle of the 6-octet EUI-48. This mapping is deprecated.
Note that the order of transmission of the EUI-64 octets in a Characteristic is LSO-MSO and also the bit order is little endian. In the System ID characteristic the uint64 starts with the manufacturer-defined identifier, whereas the representation of an EUI-64 in the IEEE-RA guidelines is MSO-LSO, starts with the OUI, and uses the big endian bit order.
§Structure
§Data Type
| Field | EUI-64 |
| Type | uint64 |
| Size | 64 |
§Description
An EUI-64 assigned according to the guidelines of the IEEE-RA.