PS4/DS4 controller battery check?

[Panja]

I searched the forum but I can only find a script for checking the battery for a wireless PS3 controller/six axes. But I'm rocking 2 DS4 controllers through bluetooth and it would be very handy to have an indicator or even a script to give me some indication of the battery percentage of my connected controllers.

Is there anything out there that does the job?

[mitu]

Seems the battery level is readable via sysfs - https://wiki.gentoo.org/wiki/Sony_DualShock#Battery_charge_level

[Panja]

Yes, I noticed.
cat /sys/class/power_supply/*/capacity will give you all the controller percentages.

Though I'm not that skilled enough to create a RetroPie menu item for this.

[xm41907]

Any update to this? I hate not knowing how much battery life is in my controller.

[slutsteg]

@xm41907

This Woolf be amazing

[roslof]

Seems pretty straightforward to run a script from EmulationStation. Proof of concept, here is a crude 10-minute version I made using Hursty's "Bluray" theme. It already contains a "Power" system, so I just added a small script, uploaded a small .png of the DualShock controller and edited the gamelist.xml file.

MAIN MENU (from Hursty):

SELECTION:

OUTPUT W/Pause (currently requires a keystroke instead of a button-press, but can modify this):

The simple script:

#!/bin/bash
clear
echo PS4 Dual-Shock Battery Level:
cat /sys/class/power_supply/*/capacity
echo
read -p "Press Enter to continue"

Be sure that the script is set as executable.

Lastly, the es_settings.cfg entry for the "Power" menu item to appear:

<system>
   <name>power</name>
   <fullname>Power Menu</fullname>
   <path>/home/pi/RetroPie/roms/power</path>
   <extension>.sh .SH</extension>
   <command>%ROM%</command>
   <platform>linux</platform>
   <theme>power</theme>
 </system>

Ideally, the output would be prettier and require a DualShock button to be pressed instead of the keyboard Enter key, but this will certainly work.