Coverage for src / bluetooth_sig / gatt / characteristics / time_exponential_8.py: 100%

1"""Time Exponential 8 characteristic (0x2B13).""" 

2 

3from __future__ import annotations 

4 

5from datetime import timedelta 

6 

7from .base import BaseCharacteristic 

8from .templates import TimeExponentialTemplate 

9 

10 

11class TimeExponential8Characteristic(BaseCharacteristic[timedelta]): 

12 """Time Exponential 8 characteristic (0x2B13). 

13 

14 org.bluetooth.characteristic.time_exponential_8 

15 

16 Time duration using exponential encoding: value = 1.1^(N - 64) seconds. 

17 - Raw 0x00 represents 0 seconds. 

18 - Raw 0xFE represents total life of the device. 

19 - Raw 0xFF represents 'value is not known'. 

20 

21 Raises: 

22 SpecialValueDetectedError: If raw value is a sentinel (e.g. 0xFE, 0xFF). 

23 """ 

24 

25 _template = TimeExponentialTemplate()