Bluetooth GATT Characteristic Reference
Maximum Recommended Heart Rate (0x2A91)
Maximum recommended heart rate is a threshold that may be set to limit exertion. The maximum recommended heart rate is smaller or equal to the maximal heart rate a user can reach.
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 | Maximum Recommended Heart Rate |
| UUID | 0x2A91 |
| Type | org.bluetooth.characteristic.maximum_recommended_heart_rate |
| XML Root | Characteristic |
| Source File | org.bluetooth.characteristic.maximum_recommended_heart_rate.xml |
| Field Count | 1 |
Field Specification
Parsed field definitions from the source XML value structure.
| Field | Requirement | Format | Unit | Exponent | Notes |
|---|---|---|---|---|---|
| Maximum Recommended Heart Rate | Mandatory | uint8 | org.bluetooth.unit.period.beats_per_minute | 0 | The Unit is beats per minute with a resolution of 1 |
Byte Layout and Decode
Payload length is 1 bytes.
function decodePayload(dataView, offset = 0) {
const maximum_recommended_heart_rate = dataView.getUint8(offset + 0);
return { maximum_recommended_heart_rate };
}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 Maximum Recommended Heart Rate in Bluetooth GATT?
Maximum Recommended Heart Rate is defined as a Bluetooth GATT characteristic entry with type org.bluetooth.characteristic.maximum_recommended_heart_rate and UUID 0x2A91.
What UUID identifies Maximum Recommended Heart Rate?
The UUID for Maximum Recommended Heart Rate is 0x2A91.
How should I parse Maximum Recommended Heart Rate?
Payload length is 1 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.