[bluez/bluez] 0281f3: shared/battery: improve the display of the charge ...

[bluez/bluez] 0281f3: shared/battery: improve the display of the charge ...

[RSmirnov512]

  Branch: refs/heads/1018486
  Home:   https://github.com/bluez/bluez
  Commit: 0281f3d75bcb1ed9878d54c94c560dc65c508b3d
      https://github.com/bluez/bluez/commit/0281f3d75bcb1ed9878d54c94c560dc65c508b3d
  Author: Roman Smirnov <r.smirnov@omp.ru>
  Date:   2025-11-01 (Sat, 01 Nov 2025)

  Changed paths:
    M Makefile.am
    M src/battery.c
    A src/shared/battery.c
    A src/shared/battery.h

  Log Message:
  -----------
  shared/battery: improve the display of the charge level

The battery charge level may fluctuate due to uncalibrated
sensors. Commit smooths out such fluctuations.

The algorithm for determining uncalibrated sensors consists of
finding the number of changes in charge direction (i.e., "spikes").
If the number of spikes is zero, the device is charging or discharging.
If there is one spike, it may mean that the device has started charging
or has been disconnected from charging. If there are two or more spikes,
this is a clear indication of an uncalibrated sensor.

Check that the battery charge is fluctuating. If the battery charge
is fluctuating, use the average charge value, otherwise use the current
value.

Fixes: https://github.com/bluez/bluez/issues/1612


  Commit: f507f63d6e63a165f6d2389822f5b40ee9be83f4
      https://github.com/bluez/bluez/commit/f507f63d6e63a165f6d2389822f5b40ee9be83f4
  Author: Roman Smirnov <r.smirnov@omp.ru>
  Date:   2025-11-01 (Sat, 01 Nov 2025)

  Changed paths:
    M .gitignore
    M Makefile.am
    M doc/test-coverage.txt
    A unit/test-battery.c

  Log Message:
  -----------
  unit: Add basic unit tests for battery charge handling


Compare: https://github.com/bluez/bluez/compare/0281f3d75bcb%5E...f507f63d6e63

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