Bluetooth GATT Characteristic Reference

Central Address Resolution (0x2AA6)

org.bluetooth.characteristic.gap.central_address_resolution

The Peripheral checks if the peer device supports address resolution by reading the Central Address Resolution characteristic before using directed advertisement where the initiator address is set to a Resolvable Private Address (RPA).

Quick Summary

Payload length is 1 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	Central Address Resolution
UUID	0x2AA6
Type	org.bluetooth.characteristic.gap.central_address_resolution
XML Root	Characteristic
Source File	org.bluetooth.characteristic.gap.central_address_resolution_support.xml
Field Count	1

Field Specification

Parsed field definitions from the source XML value structure.

Field	Requirement	Format	Unit	Exponent	Notes
Central Address Resolution Support	Mandatory	uint8	-	-	-

Byte Layout and Decode

Payload length is 1 bytes.

function decodePayload(dataView, offset = 0) {
  const central_address_resolution_support = dataView.getUint8(offset + 0);
  return { central_address_resolution_support };
}

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 Central Address Resolution in Bluetooth GATT?

Central Address Resolution is defined as a Bluetooth GATT characteristic entry with type org.bluetooth.characteristic.gap.central_address_resolution and UUID 0x2AA6.

What UUID identifies Central Address Resolution?

The UUID for Central Address Resolution is 0x2AA6.

How should I parse Central Address Resolution?