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base-files: add new application led trigger backend

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For now we have only kernel LED trigger support. With this change it is now
possible to use application triggers.

If we configure a LED with a non kernel trigger, then we check on every
restart and boot of the LED service if we have this trigger as an application
in "/usr/libexec/led-trigger". If this file with the name is found, then we
execute this to init the LED.

Possible use cases are:

- Start/Stop/Restart an application led trigger service for this led
- Init a LED that is configured by a hotplug script (VPN tunnel established)

Signed-off-by: Florian Eckert <fe@dev.tdt.de>
This commit is contained in:
Florian Eckert
2020-02-05 09:23:27 +01:00
committed by Paul Spooren
parent 58ad113087
commit dec14ac436
1 changed files with 5 additions and 4 deletions
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9
package/base-files/files/etc/init.d/led
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@@ -31,10 +31,11 @@ load_led() {
config_get gpio $1 gpio "0" config_get gpio $1 gpio "0"
config_get inverted $1 inverted "0" config_get inverted $1 inverted "0"
if [ "$trigger" = "rssi" ]; then # execute application led trigger
# handled by rssileds userspace process [ -f "/usr/libexec/led-trigger/${trigger}" ] && {
return . "/usr/libexec/led-trigger/${trigger}"
fi return 0
}
[ "$trigger" = "usbdev" ] && { [ "$trigger" = "usbdev" ] && {
# Backward compatibility: translate to the new trigger # Backward compatibility: translate to the new trigger