Support code for peripherals (initially, speaker LEDs).
A tool that detects if the battery is connected and if the charge is too
low, to power off the kit. See the file bin/kano-boot-battery for
details.
WARNING
- APIs are considered unstable for the Kano OS 2.1 release.
This is because we may want to introduce a daemon, and the design of this will influence the API. Currently the API requires root, but this won't be necessary if we have a daemon.
Access should be via the kano-speakerleds binary.
This module will turn off the kit automatically on boot if the battery is too low. A warning message will be displayed on the console, and afterwards the kit will turn itself off.
There are 3 ways to test this functionality:
- Letting the battery run low, which is not practical most times
- Interactively from a terminal, with
sudo kano-boot-battery --dry-run, no reboot will take place - Faking low battery signal with
sudo kano-boot-battery --enable-test && sudo reboot
When faking the low battery signal, it should run the test on next reboot and then return to normal boot to Dashboard.