Bluetooth GATT Characteristic Reference
Blood Pressure Feature (0x2A49)
The Blood Pressure Feature characteristic is used to describe the supported features of the Blood Pressure Sensor.
Quick Summary
Payload length is 2 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 | Blood Pressure Feature |
| UUID | 0x2A49 |
| Type | org.bluetooth.characteristic.blood_pressure_feature |
| XML Root | Characteristic |
| Source File | org.bluetooth.characteristic.blood_pressure_feature.xml |
| Field Count | 1 |
Field Specification
Parsed field definitions from the source XML value structure.
| Field | Requirement | Format | Unit | Exponent | Notes |
|---|---|---|---|---|---|
| Blood Pressure Feature | Mandatory | 16bit | - | - | - |
Bit Map
Bit-level enumerations extracted from the XML BitField definition.
| Field | Bit | Size | Name | 0 Means | 1 Means |
|---|---|---|---|---|---|
| Blood Pressure Feature | 0 | 1 | Body Movement Detection Support bit | Body Movement Detection feature not supported | Body Movement Detection feature supported |
| Blood Pressure Feature | 1 | 1 | Cuff Fit Detection Support bit | Cuff Fit Detection feature not supported | Cuff Fit Detection feature supported |
| Blood Pressure Feature | 2 | 1 | Irregular Pulse Detection Support bit | Irregular Pulse Detection feature not supported | Irregular Pulse Detection feature supported |
| Blood Pressure Feature | 3 | 1 | Pulse Rate Range Detection Support bit | Pulse Rate Range Detection feature not supported | Pulse Rate Range Detection feature supported |
| Blood Pressure Feature | 4 | 1 | Measurement Position Detection Support bit | Measurement Position Detection feature not supported | Measurement Position Detection feature supported |
| Blood Pressure Feature | 5 | 1 | Multiple Bond Support bit | Multiple Bonds not supported | Multiple Bonds supported |
Byte Layout and Decode
Payload length is 2 bytes.
function decodePayload(dataView, offset = 0) {
// Parse blood_pressure_feature (16bit) according to Bluetooth format rules.
return { blood_pressure_feature };
}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 Blood Pressure Feature in Bluetooth GATT?
Blood Pressure Feature is defined as a Bluetooth GATT characteristic entry with type org.bluetooth.characteristic.blood_pressure_feature and UUID 0x2A49.
What UUID identifies Blood Pressure Feature?
The UUID for Blood Pressure Feature is 0x2A49.
How should I parse Blood Pressure Feature?
Payload length is 2 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.