Hi

I have a suggestion to modify update-mot.d script 30-sysinfo.

It reports battery chargin or not depending on percentage (if <100% then is charging):

 

# Battery info for Allwinner

# kernel 4.4+

axp_dir="/sys/power/axp_pmu"

if [[ -e "$axp_dir" ]]; then

        status_battery_connected=$(cat $axp_dir/battery/connected)

        if [[ "$status_battery_connected" == "1" ]]; then

                status_battery_charging=$(cat $axp_dir/charger/charging)

                status_ac_connect=$(cat $axp_dir/ac/connected)

                battery_percent=$(cat $axp_dir/battery/capacity)

                # dispay charging / percentage

if [[ "$status_ac_connect" == "1" && "$battery_percent" -lt "100" ]]; then

status_battery_text=" charging"

                elif [[ "$status_ac_connect" == "1" && "$battery_percent" -eq "100" ]]; then

status_battery_text=" charged"

                else

status_battery_text=" discharging"

                fi

        fi

fi

 

 

However, at least on banana pi M1 (A20) it can be below 100% and not charging, Seems that the PMU doesn't charge just for 1-2%. So we can just use driver info to check if it is really charging, like this:

 

# Battery info for Allwinner kernel 4.4+

axp_dir="/sys/power/axp_pmu"

if [[ -e "$axp_dir" ]]; then

        status_battery_connected=$(cat $axp_dir/battery/connected)

        if [[ "$status_battery_connected" == "1" ]]; then

                status_battery_charging=$(cat $axp_dir/charger/charging)

                status_ac_connect=$(cat $axp_dir/ac/connected)

                battery_percent=$(cat $axp_dir/battery/capacity)

                # dispay charging / percentage

if [[ "$status_ac_connect" == "1" && "$status_battery_charging" == "1" ]]; then

status_battery_text=" charging"

                elif [[ "$status_ac_connect" == "1" && "$status_battery_charging" == "0" ]]; then

status_battery_text=" charged"

                else

status_battery_text=" discharging"

                fi

        fi

fi

 

Hope someone else finds it useful

 

Thanks.

 

This thing was in my todo list.

Hmm, I have: 

status_battery_charging = 0

... charging or not, on Linux lime2 4.8.7-sunxi.

According to the template of rpimonitor that I found at this forum in some topic we have to check this

 

if (/sys/power/axp_pmu/battery/amperage > 0)

    "Battery Discharging"

else if (/sys/power/axp_pmu/battery/charging == 1)

    "Battery Charging"

else

    "Battery Charged"

 

This works at every combination of power source

- Board powered through battery only

- Board powered through DC-IN

- Board powered through USB OTG

 

# Battery info for Allwinner
# kernel 4.4+
axp_dir="/sys/power/axp_pmu"
if [[ -e "$axp_dir" ]]; then
        status_battery_connected=$(cat $axp_dir/battery/connected)
        if [[ "$status_battery_connected" == "1" ]]; then
                battery_current=$(cat $axp_dir/battery/amperage)
                status_battery_charging=$(cat $axp_dir/charger/charging)
                status_battery_charge=$(cat $axp_dir/battery/charge)
                battery_percent=$(cat $axp_dir/battery/capacity)
                # dispay charging / percentage
                if [[ "$battery_current" -gt "0" ]]; then
                        status_battery_text=" discharging"
                elif [[ "$status_battery_charging" -eq "1" ]]; then
                        status_battery_text=" charging"
                else
                        status_battery_text=" charged"
                fi
        fi
fi

 

I've tested it with 4.8.4-sunxi