src.bluetooth_sig.gatt.characteristics.indoor_bike_data¶

Indoor Bike Data characteristic implementation.

Implements the Indoor Bike Data characteristic (0x2AD2) from the Fitness Machine Service. A 16-bit flags field controls the presence of optional data fields.

Bit 0 (“More Data”) uses inverted logic: when bit 0 is 0 the Instantaneous Speed field IS present; when bit 0 is 1 it is absent. All other bits use normal logic (1 = present).

References

Bluetooth SIG Fitness Machine Service 1.0 org.bluetooth.characteristic.indoor_bike_data (GSS YAML)

Classes¶

Name	Description
`IndoorBikeData`	Parsed data from Indoor Bike Data characteristic.
`IndoorBikeDataCharacteristic`	Indoor Bike Data characteristic (0x2AD2).
`IndoorBikeDataFlags`	Indoor Bike Data flags as per Bluetooth SIG specification.

Module Contents¶

class src.bluetooth_sig.gatt.characteristics.indoor_bike_data.IndoorBikeData¶

Bases: msgspec.Struct

Parsed data from Indoor Bike Data characteristic.

flags¶: Raw 16-bit flags field.

instantaneous_speed¶: Instantaneous speed in km/h (0.01 resolution).

average_speed¶: Average speed in km/h (0.01 resolution).

instantaneous_cadence¶: Instantaneous cadence in rpm (0.5 resolution).

average_cadence¶: Average cadence in rpm (0.5 resolution).

total_distance¶: Total distance in metres (uint24).

resistance_level¶: Resistance level (unitless, resolution 10).

instantaneous_power¶: Instantaneous power in watts (signed).

average_power¶: Average power in watts (signed).

total_energy¶: Total expended energy in kcal.

energy_per_hour¶: Expended energy per hour in kcal.

energy_per_minute¶: Expended energy per minute in kcal.

heart_rate¶: Heart rate in bpm.

metabolic_equivalent¶: MET value (0.1 resolution).

elapsed_time¶: Elapsed time in seconds.

remaining_time¶: Remaining time in seconds.

average_cadence: float | None = None¶

average_power: int | None = None¶

average_speed: float | None = None¶

elapsed_time: int | None = None¶

energy_per_hour: int | None = None¶

energy_per_minute: int | None = None¶

flags: IndoorBikeDataFlags¶

heart_rate: int | None = None¶

instantaneous_cadence: float | None = None¶

instantaneous_power: int | None = None¶

instantaneous_speed: float | None = None¶

metabolic_equivalent: float | None = None¶

remaining_time: int | None = None¶

resistance_level: float | None = None¶

total_distance: int | None = None¶

total_energy: int | None = None¶

class src.bluetooth_sig.gatt.characteristics.indoor_bike_data.IndoorBikeDataCharacteristic(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[IndoorBikeData]

Indoor Bike Data characteristic (0x2AD2).

Used in the Fitness Machine Service to transmit indoor bike workout data. A 16-bit flags field controls which optional fields are present.

Flag-bit assignments (from GSS YAML):: Bit 0: More Data – inverted: 0 -> Inst. Speed present, 1 -> absent Bit 1: Average Speed present Bit 2: Instantaneous Cadence present Bit 3: Average Cadence present Bit 4: Total Distance present Bit 5: Resistance Level present Bit 6: Instantaneous Power present Bit 7: Average Power present Bit 8: Expended Energy present (gates triplet: total + /hr + /min) Bit 9: Heart Rate present Bit 10: Metabolic Equivalent present Bit 11: Elapsed Time present Bit 12: Remaining Time present Bits 13-15: Reserved for Future Use

allow_variable_length: bool = True¶

expected_type¶

min_length: int = 2¶

class src.bluetooth_sig.gatt.characteristics.indoor_bike_data.IndoorBikeDataFlags¶

Bases: enum.IntFlag

Indoor Bike Data flags as per Bluetooth SIG specification.

Bit 0 uses inverted logic: 0 = Instantaneous Speed present, 1 = absent.

AVERAGE_CADENCE_PRESENT = 8¶

AVERAGE_POWER_PRESENT = 128¶

AVERAGE_SPEED_PRESENT = 2¶

ELAPSED_TIME_PRESENT = 2048¶

EXPENDED_ENERGY_PRESENT = 256¶

HEART_RATE_PRESENT = 512¶

INSTANTANEOUS_CADENCE_PRESENT = 4¶

INSTANTANEOUS_POWER_PRESENT = 64¶

METABOLIC_EQUIVALENT_PRESENT = 1024¶

MORE_DATA = 1¶

REMAINING_TIME_PRESENT = 4096¶

RESISTANCE_LEVEL_PRESENT = 32¶

TOTAL_DISTANCE_PRESENT = 16¶