LEDs and backlight

Status LEDs

Meaning of the LEDs from left to right according to gfrancisdev.

Left LED group

• SD card 1
• SD card 2
• Wifi
• Bluetooth

Right LED group

• Empty (with solder pad for hardware hackers who want to use an additional LED)
• Empty (-"-)
• Charging
• Power

Controlling LEDs and backlight

Available through LED and brightness classes:

/sys/class/leds/*
/sys/class/backlight/*

LED brightness and trigger and backlight brightness can be controlled through those files. Power and charger LEDs have variable brightness control, others are on/off only.

Note: SD card LEDs use SD cart power supplies, so those must be enabled for those LEDs to work (they are enabled when cards are inserted).

backlight power saving

Controlled by X server through omapfb_drv.so, ca be disabled by running

xset s off

config

Kept in /etc/default/leds (LEDs) and /etc/pandora/conf/brightness.state (backlight).

Note: driver allows lower brightness than you can set using keyboard controls, because some units start to flicker on lowest brightness. This can be changed in /usr/pandora/scripts/op_bright.sh .

Keyboard controls

Backlight controls, power switch and pandora button are handled by pndevmapperd which calls appropriate scripts as needed. The scripts reside in /usr/pandora/scripts/ . There is a op_test_inputs program included designed to test inputs.

config

/etc/pandora/conf/eventmap