src.bluetooth_sig.gatt.characteristics.enhanced_blood_pressure_measurement¶

Enhanced Blood Pressure Measurement characteristic implementation.

Implements the Enhanced Blood Pressure Measurement characteristic (0x2B34). Extends the regular Blood Pressure Measurement with uint32 timestamps (seconds since epoch), a User Facing Time field, and an Epoch Start flag.

Flag-bit assignments (from GSS YAML):: Bit 0: Units (0=mmHg, 1=kPa) Bit 1: Time Stamp present (uint32 seconds since epoch) Bit 2: Pulse Rate present (medfloat16) Bit 3: User ID present (uint8) Bit 4: Measurement Status present (boolean[16]) Bit 5: User Facing Time present (uint32 seconds since epoch) Bit 6: Epoch Start 2000 (0=1900, 1=2000) Bit 7: Reserved

References

Bluetooth SIG Blood Pressure Service 1.1 org.bluetooth.characteristic.enhanced_blood_pressure_measurement (GSS YAML)

Classes¶

Name	Description
`EnhancedBloodPressureData`	Parsed data from Enhanced Blood Pressure Measurement characteristic.
`EnhancedBloodPressureFlags`	Enhanced Blood Pressure Measurement flags.
`EnhancedBloodPressureMeasurementCharacteristic`	Enhanced Blood Pressure Measurement characteristic (0x2B34).
`EpochYear`	Epoch start year for Enhanced Blood Pressure timestamps.

Module Contents¶

class src.bluetooth_sig.gatt.characteristics.enhanced_blood_pressure_measurement.EnhancedBloodPressureData¶

Bases: msgspec.Struct

Parsed data from Enhanced Blood Pressure Measurement characteristic.

flags¶: Raw 8-bit flags field.

systolic¶: Systolic pressure value.

diastolic¶: Diastolic pressure value.

mean_arterial_pressure¶: Mean arterial pressure value.

unit¶: Pressure unit (mmHg or kPa).

timestamp¶: Seconds since epoch start. None if absent.

pulse_rate¶: Pulse rate in BPM. None if absent.

user_id¶: User ID (0-255). None if absent.

measurement_status¶: 16-bit measurement status flags. None if absent.

user_facing_time¶: User-facing time in seconds since epoch. None if absent.

epoch_year¶: Epoch start year (1900 or 2000).

diastolic: float¶

epoch_year: EpochYear¶

flags: EnhancedBloodPressureFlags¶

mean_arterial_pressure: float¶

measurement_status: src.bluetooth_sig.gatt.characteristics.blood_pressure_measurement.BloodPressureMeasurementStatus | None = None¶

pulse_rate: float | None = None¶

systolic: float¶

timestamp: int | None = None¶

unit: bluetooth_sig.types.units.PressureUnit¶

user_facing_time: int | None = None¶

user_id: int | None = None¶

class src.bluetooth_sig.gatt.characteristics.enhanced_blood_pressure_measurement.EnhancedBloodPressureFlags¶

Bases: enum.IntFlag

Enhanced Blood Pressure Measurement flags.

EPOCH_START_2000 = 64¶

MEASUREMENT_STATUS_PRESENT = 16¶

PULSE_RATE_PRESENT = 4¶

TIMESTAMP_PRESENT = 2¶

UNITS_KPA = 1¶

USER_FACING_TIME_PRESENT = 32¶

USER_ID_PRESENT = 8¶

class src.bluetooth_sig.gatt.characteristics.enhanced_blood_pressure_measurement.EnhancedBloodPressureMeasurementCharacteristic(info: src.bluetooth_sig.types.CharacteristicInfo | None = None, validation: src.bluetooth_sig.gatt.characteristics.characteristic_meta.ValidationConfig | None = None)¶

Bases: src.bluetooth_sig.gatt.characteristics.base.BaseCharacteristic[EnhancedBloodPressureData]

Enhanced Blood Pressure Measurement characteristic (0x2B34).

Enhanced variant of Blood Pressure Measurement with uint32 timestamps (seconds since epoch) instead of 7-byte DateTime, plus a new User Facing Time field and Epoch Start 2000 flag.

allow_variable_length: bool = True¶

expected_type¶

min_length: int = 7¶

class src.bluetooth_sig.gatt.characteristics.enhanced_blood_pressure_measurement.EpochYear¶

Bases: enum.IntEnum

Epoch start year for Enhanced Blood Pressure timestamps.

EPOCH_1900 = 1900¶

EPOCH_2000 = 2000¶