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刚查到一些/sys的用法

笔记本电池充电控制

设置开始与停止充电的阀值(百分比)

# echo 40 > /sys/devices/platform/smapi/BAT0/start_charge_thresh

# echo 70 > /sys/devices/platform/smapi/BAT0/stop_charge_thresh

# cat /sys/devices/platform/smapi/BAT0/*_charge_thresh

(表示低于40%时开始充电，高于70%就停止)

设置禁止充电时间

17分内防止充电到BAT0(首选电池):

# echo 17 > /sys/devices/platform/smapi/BAT0/inhibit_charge_minutes

Hint:

用于控制给那个电池充电当使用多个电池 Ultrabay battery.

取消禁止充电:

# echo 0 > /sys/devices/platform/smapi/BAT0/inhibit_charge_minutes

强制禁止充电(即使接AC):

# echo 1 > /sys/devices/platform/smapi/BAT0/force_discharge

Hint:

用于控制给那个电池充电当使用多个电池 Ultrabay battery.

取消强制禁止充电:

# echo 0 > /sys/devices/platform/smapi/BAT0/force_discharge

显示电池状态信息

显示额外的电池状态，比如充电情况、电压、电流、容量、充电次数和型号信息:

# cat /sys/devices/platform/smapi/BAT0/installed

# cat /sys/devices/platform/smapi/BAT0/state '状态：idle/charging/discharging

# cat /sys/devices/platform/smapi/BAT0/cycle_count

# cat /sys/devices/platform/smapi/BAT0/current_now # instantaneous current

# cat /sys/devices/platform/smapi/BAT0/current_avg # last minute average

# cat /sys/devices/platform/smapi/BAT0/power_now # instantaneous power

# cat /sys/devices/platform/smapi/BAT0/power_avg # last minute average

# cat /sys/devices/platform/smapi/BAT0/last_full_capacity

# cat /sys/devices/platform/smapi/BAT0/remaining_percent

# cat /sys/devices/platform/smapi/BAT0/remaining_running_time

# cat /sys/devices/platform/smapi/BAT0/remaining_charging_time

# cat /sys/devices/platform/smapi/BAT0/remaining_capacity

# cat /sys/devices/platform/smapi/BAT0/design_capacity

# cat /sys/devices/platform/smapi/BAT0/voltage

# cat /sys/devices/platform/smapi/BAT0/design_voltage

# cat /sys/devices/platform/smapi/BAT0/manufacturer

# cat /sys/devices/platform/smapi/BAT0/model

# cat /sys/devices/platform/smapi/BAT0/barcoding

# cat /sys/devices/platform/smapi/BAT0/chemistry

# cat /sys/devices/platform/smapi/BAT0/serial

# cat /sys/devices/platform/smapi/BAT0/manufacture_date

# cat /sys/devices/platform/smapi/BAT0/first_use_date

# cat /sys/devices/platform/smapi/BAT0/temperature # in milli-Celsius

# cat /sys/devices/platform/smapi/ac_connected