Battery support on Pine64-LTS and power button

[Bernd Walter]

The Pine64-LTS runs perfectly with the battery pack in addition to mains
supply.
But I don't see any way to see the remaining charge left, e.g. for
a clean shuttdown.

Also how is the power button integrated in the OS that is triggers a clean
shutdown?
I'm asking if we have ready available support to trigger a shuttdown
via GPIO on other boards, or if such a support has to be done individually?
It wouldn't be a big deal to poll a GPIO though.

-- 
B.Walter <bernd at bwct.de> http://www.bwct.de
Modbus/TCP Ethernet I/O Baugruppen, ARM basierte FreeBSD Rechner uvm.