Coverage for src / bluetooth_sig / gatt / characteristics / percentage_8.py: 100%

1"""Percentage 8 characteristic (0x2B04).""" 

2 

3from __future__ import annotations 

4 

5from .base import BaseCharacteristic 

6from .templates import ScaledUint8Template 

7 

8 

9class Percentage8Characteristic(BaseCharacteristic[float]): 

10 """Percentage 8 characteristic (0x2B04). 

11 

12 org.bluetooth.characteristic.percentage_8 

13 

14 Percentage with a resolution of 0.5. 

15 M=1, d=0, b=-1 → scale factor 0.5 (binary exponent 2^-1). 

16 Range: 0-100%. A value of 0xFF represents 'value is not known'. 

17 

18 Raises: 

19 SpecialValueDetectedError: If raw value is a sentinel (e.g. 0xFF). 

20 """ 

21 

22 _template = ScaledUint8Template(scale_factor=0.5)