Bluetooth GATT Characteristic Reference
Object ID (0x2AC3)
Object ID is defined in the Bluetooth GATT XML specification with type org.bluetooth.characteristic.object_id and UUID 0x2AC3.
Quick Summary
Payload length is 6 bytes. This page is generated from official GATT XML and presented as implementation-ready guidance.
At a Glance
Key reference details for BLE implementation, interoperability testing, and AI-assisted troubleshooting.
| Property | Value |
|---|---|
| Name | Object ID |
| UUID | 0x2AC3 |
| Type | org.bluetooth.characteristic.object_id |
| XML Root | Characteristic |
| Source File | org.bluetooth.characteristic.object_id.xml |
| Field Count | 1 |
Field Specification
Parsed field definitions from the source XML value structure.
| Field | Requirement | Format | Unit | Exponent | Notes |
|---|---|---|---|---|---|
| Object ID | Mandatory | uint48 | - | 0 | - |
Byte Layout and Decode
Payload length is 6 bytes.
function decodePayload(dataView, offset = 0) {
// Parse object_id (uint48) according to Bluetooth format rules.
return { object_id };
}Use Cases and Integration Notes
BLE Telemetry
Map characteristic values into dashboards and alerts for device observability.
Firmware Regression
Compare decoded fields across builds to detect protocol or scaling changes.
App Integration
Build stable parsing paths that convert raw payloads into typed app models.
Implementation Checklist
- Validate payload length and mandatory fields before decode.
- Decode with Bluetooth-specified signedness, unit, and exponent handling.
- Convert units at presentation boundaries to avoid drift in business logic.
- Persist raw packets and decoded values for reproducible troubleshooting.
FAQ
What is Object ID in Bluetooth GATT?
Object ID is defined as a Bluetooth GATT characteristic entry with type org.bluetooth.characteristic.object_id and UUID 0x2AC3.
What UUID identifies Object ID?
The UUID for Object ID is 0x2AC3.
How should I parse Object ID?
Payload length is 6 bytes.
Where does this definition come from?
This page is generated from the Bluetooth SIG mirror XML in the oesmith/gatt-xml repository.
How does this page support BLE implementation?
The page combines structured tables, practical Q&A, and JSON-LD metadata to help teams validate integrations and troubleshoot consistently.