MTK Kernel Log 看电池信息

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1. MTK Kernel Log 看电池信息

• healthd: battery l=83 v=4203 t=35.0 h=2 st=2 c=0 chg=u

5,103: <12>[15987.646554]  (4)[396:healthd]healthd: battery l=83 v=4203 t=35.0 h=2 st=2 c=0 chg=u 
37,950: <12>[16153.104002]  (7)[396:healthd]healthd: battery l=84 v=4216 t=35.0 h=2 st=2 c=0 chg=u 
73,572: <12>[17332.148539]  (4)[396:healthd]healthd: battery l=85 v=4220 t=35.0 h=2 st=2 c=0 chg=u 
120,647: <12>[18563.883006]  (7)[396:healthd]healthd: battery l=86 v=4228 t=35.0 h=2 st=2 c=0 chg=u 
10,864: <12>[19185.760618]  (6)[396:healthd]healthd: battery l=87 v=4282 t=33.0 h=2 st=2 c=0 chg=u 
21,646: <12>[19533.879429]  (4)[396:healthd]healthd: battery l=88 v=4305 t=32.0 h=2 st=2 c=0 chg=u 
31,624: <12>[19848.329578]  (7)[396:healthd]healthd: battery l=89 v=4319 t=31.0 h=2 st=2 c=0 chg=u 
40,018: <12>[20147.372360]  (7)[396:healthd]healthd: battery l=90 v=4333 t=31.0 h=2 st=2 c=0 chg=u 
48,666: <12>[20446.413474]  (5)[396:healthd]healthd: battery l=91 v=4337 t=30.0 h=2 st=2 c=0 chg=u 
56,099: <12>[20725.455383]  (5)[396:healthd]healthd: battery l=92 v=4357 t=30.0 h=2 st=2 c=0 chg=u 
63,030: <12>[20991.192993]  (7)[396:healthd]healthd: battery l=93 v=4383 t=30.0 h=2 st=2 c=0 chg=u 
69,485: <12>[21233.539805]  (6)[396:healthd]healthd: battery l=94 v=4398 t=29.0 h=2 st=2 c=0 chg=u 
75,258: <12>[21472.581821]  (6)[396:healthd]healthd: battery l=95 v=4411 t=29.0 h=2 st=2 c=0 chg=u 
81,041: <12>[21711.627340]  (6)[396:healthd]healthd: battery l=96 v=4420 t=29.0 h=2 st=2 c=0 chg=u 
87,369: <12>[21960.669543]  (4)[396:healthd]healthd: battery l=97 v=4424 t=28.0 h=2 st=2 c=0 chg=u 
94,114: <12>[22249.710015]  (5)[396:healthd]healthd: battery l=98 v=4424 t=28.0 h=2 st=2 c=0 chg=u 
103,583: <12>[22648.752967]  (5)[396:healthd]healthd: battery l=99 v=4424 t=27.0 h=2 st=2 c=0 chg=u 
110,535: <12>[22918.272997]  (4)[396:healthd]healthd: battery l=100 v=4424 t=28.0 h=2 st=2 c=0 chg=u 

2. 参数含义

\system\core\healthd\BatteryMonitor.cpp

• healthd: battery l=83 v=4203 t=35.0 h=2 st=2 c=0 chg=u

  1. l 表示电池电量百分比
  2. v 表示电池电压
  3. t 表示电池温度
  4. h 表示电池的健康状态
  5. st 表示电池的状态
  6. chg 表示当前电池是否为（电源器充电，USB充电，无线充电，不充电）

    snprintf(dmesgline, sizeof(dmesgline),
         "battery l=%d v=%d t=%s%d.%d h=%d st=%d",
         props.batteryLevel, props.batteryVoltage,
         props.batteryTemperature < 0 ? "-" : "",
         abs(props.batteryTemperature / 10),
         abs(props.batteryTemperature % 10), props.batteryHealth,
         props.batteryStatus);
    snprintf(dmesgline + len, sizeof(dmesgline) - len, " chg=%s%s%s",
             props.chargerAcOnline ? "a" : "",
             props.chargerUsbOnline ? "u" : "",
             props.chargerWirelessOnline ? "w" : "");

    healthd_mode_ops->battery_update(&props);
    return props.chargerAcOnline | props.chargerUsbOnline |
            props.chargerWirelessOnline;

对应信息 adb shell dumpsys battery

Current Battery Service state:
  (UPDATES STOPPED -- use 'reset' to restart)
  AC powered: false
  USB powered: false
  Wireless powered: false
  Max charging current: 500000
  Max charging voltage: 5000000
  Charge counter: 36
  status: 2
  health: 2
  present: true
  level: 39
  scale: 100
  voltage: 3865
  temperature: 290
  technology: Li-ion