45 lines
1.3 KiB
Bash
Executable file
45 lines
1.3 KiB
Bash
Executable file
#!/usr/bin/env bash
|
|
# Look into /sys/class/power_supply for your battery-name. It's one of the
|
|
# symlinks
|
|
|
|
declare -r battery_name="$1"
|
|
declare -r write_path="$2"
|
|
|
|
if [[ $# -ne 2 ]]; then
|
|
cat <<HELP
|
|
log_battery systemd.timer v2.1
|
|
|
|
USAGE: $(basename "$0") <battery-name> <csv-path>
|
|
|
|
EXAMPLES:
|
|
$(basename "$0") BAT0 /home/emiliko/loggers/battery.csv
|
|
HELP
|
|
exit 1
|
|
elif [[ ! -e "$write_path" && -d "$(dirname "$write_path")" ]]; then
|
|
echo "hostname,time,charge,charge_full,percent,state,energy_rate" > "$write_path"
|
|
fi
|
|
|
|
declare -r $(xargs -0 < "/sys/class/power_supply/${battery_name}/uevent")
|
|
|
|
awk \
|
|
-v hostname="$(hostname)" \
|
|
-v time="$(date -u +"%Y-%m-%d %H:%M:%S UTC")" \
|
|
-v state="$POWER_SUPPLY_STATUS" \
|
|
-v a="$POWER_SUPPLY_CHARGE_NOW" \
|
|
-v b="$POWER_SUPPLY_CHARGE_FULL" \
|
|
-v c="$POWER_SUPPLY_CHARGE_FULL_DESIGN" \
|
|
-v d="$POWER_SUPPLY_VOLTAGE_NOW" \
|
|
-v e="$POWER_SUPPLY_CURRENT_NOW" \
|
|
-v f="$POWER_SUPPLY_VOLTAGE_MIN_DESIGN" \
|
|
'
|
|
BEGIN {
|
|
printf "%s,%s,", hostname, time
|
|
printf "%0.4f,", a*f/10**12 # Charge in Wh
|
|
printf "%0.4f,", b*f/10**12 # Charge when full in Wh
|
|
printf "%0.2f%%,", a/b*100 # Battery capacity in percent
|
|
printf "%s,", state
|
|
# Energy rate in W is always absolute, so use state to determine +/-
|
|
printf "%0.4f\n", e*d/10**12
|
|
}
|
|
' | awk '{print tolower($0)}' >> "$write_path"
|