Object Type (0x2ABF)

Quick Summary

Payload length ranges from 2 to 16 bytes depending on UUID width or variable fields. 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.

Field Specification

Parsed field definitions from the source XML value structure.

Byte Layout and Decode

Payload length ranges from 2 to 16 bytes depending on UUID width or variable fields.

function decodePayload(dataView, offset = 0) {
  const object_typeRaw = new Uint8Array(dataView.buffer, dataView.byteOffset + offset + 0);
  const object_type = object_typeRaw.length === 2
    ? `0x${object_typeRaw[0].toString(16).padStart(2, "0")}${object_typeRaw[1].toString(16).padStart(2, "0")}`
    : Array.from(object_typeRaw).map((b) => b.toString(16).padStart(2, "0")).join("");
  // UUID width can be 2 bytes (16-bit) or 16 bytes (128-bit).
  return { object_type };
}

Use Cases and Integration Notes

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

Related Links

Last updated: 2026-03-04