src.bluetooth_sig.gatt.characteristics.plx_continuous_measurement¶

PLX Continuous Measurement characteristic implementation.

Attributes¶

Name	Description
`logger`

Classes¶

Name	Description
`PLXContinuousData`	Parsed PLX continuous measurement data (Table 3.6 PLXS v1.0.1).
`PLXContinuousFlags`	PLX Continuous measurement flags (Table 3.7 PLXS v1.0.1).
`PLXContinuousMeasurementCharacteristic`	PLX Continuous Measurement characteristic (0x2A5F).
`PLXDeviceAndSensorStatus`	PLX Device and Sensor Status flags (24-bit, Table 3.5 PLXS v1.0.1).
`PLXMeasurementStatus`	PLX Measurement Status flags (16-bit, Table 3.4 PLXS v1.0.1).

Module Contents¶

class src.bluetooth_sig.gatt.characteristics.plx_continuous_measurement.PLXContinuousData¶

Bases: msgspec.Struct

Parsed PLX continuous measurement data (Table 3.6 PLXS v1.0.1).

continuous_flags: PLXContinuousFlags¶

device_and_sensor_status: PLXDeviceAndSensorStatus | None = None¶

measurement_status: PLXMeasurementStatus | None = None¶

pulse_amplitude_index: float | None = None¶

pulse_rate: float¶

pulse_rate_fast: float | None = None¶

pulse_rate_slow: float | None = None¶

spo2: float¶

spo2_fast: float | None = None¶

spo2_slow: float | None = None¶

supported_features: src.bluetooth_sig.gatt.characteristics.plx_features.PLXFeatureFlags | None = None¶

class src.bluetooth_sig.gatt.characteristics.plx_continuous_measurement.PLXContinuousFlags¶

Bases: enum.IntFlag

PLX Continuous measurement flags (Table 3.7 PLXS v1.0.1).

DEVICE_AND_SENSOR_STATUS_PRESENT = 8¶

MEASUREMENT_STATUS_PRESENT = 4¶

PULSE_AMPLITUDE_INDEX_PRESENT = 16¶

SPO2PR_FAST_PRESENT = 1¶

SPO2PR_SLOW_PRESENT = 2¶

class src.bluetooth_sig.gatt.characteristics.plx_continuous_measurement.PLXContinuousMeasurementCharacteristic¶

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

PLX Continuous Measurement characteristic (0x2A5F).

Used to transmit continuous SpO2 (blood oxygen saturation) and pulse rate measurements from pulse oximetry devices.

Format (Table 3.6): Flags(1) + SpO2PR-Normal(4) + [SpO2PR-Fast(4)] + [SpO2PR-Slow(4)] + [Measurement Status(2)] + [Device and Sensor Status(3)] + [Pulse Amplitude Index(2)]

allow_variable_length: bool = True¶

max_length: int | None = 20¶

min_length: int | None = 5¶

class src.bluetooth_sig.gatt.characteristics.plx_continuous_measurement.PLXDeviceAndSensorStatus¶

Bases: enum.IntFlag

PLX Device and Sensor Status flags (24-bit, Table 3.5 PLXS v1.0.1).

EQUIPMENT_MALFUNCTION_DETECTED = 2¶

ERRATIC_SIGNAL_DETECTED = 64¶

EXTENDED_DISPLAY_UPDATE_ONGOING = 1¶

INADEQUATE_SIGNAL_DETECTED = 8¶

LOW_PERFUSION_DETECTED = 32¶

NON_PULSATILE_SIGNAL_DETECTED = 128¶

POOR_SIGNAL_DETECTED = 16¶

QUESTIONABLE_PULSE_DETECTED = 256¶

SENSOR_DISCONNECTED = 32768¶

SENSOR_DISPLACED = 8192¶

SENSOR_INTERFERENCE_DETECTED = 1024¶

SENSOR_MALFUNCTIONING = 16384¶

SENSOR_UNCONNECTED_TO_USER = 2048¶

SIGNAL_ANALYSIS_ONGOING = 512¶

SIGNAL_PROCESSING_IRREGULARITY = 4¶

UNKNOWN_SENSOR_CONNECTED = 4096¶

class src.bluetooth_sig.gatt.characteristics.plx_continuous_measurement.PLXMeasurementStatus¶

Bases: enum.IntFlag

PLX Measurement Status flags (16-bit, Table 3.4 PLXS v1.0.1).

Bits 0-4 are RFU. Status bits start at bit 5.

CALIBRATION_ONGOING = 4096¶

DATA_FOR_DEMONSTRATION = 1024¶

DATA_FOR_TESTING = 2048¶

DATA_FROM_MEASUREMENT_STORAGE = 512¶

EARLY_ESTIMATED_DATA = 64¶

FULLY_QUALIFIED_DATA = 256¶

INVALID_MEASUREMENT_DETECTED = 32768¶

MEASUREMENT_ONGOING = 32¶

MEASUREMENT_UNAVAILABLE = 8192¶

QUESTIONABLE_MEASUREMENT_DETECTED = 16384¶

VALIDATED_DATA = 128¶

src.bluetooth_sig.gatt.characteristics.plx_continuous_measurement.logger¶